nih-gov/www.ncbi.nlm.nih.gov/omim/164730

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<title>
Entry
- *164730 - AKT SERINE/THREONINE KINASE 1; AKT1
- OMIM
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<span class="h4">*164730</span>
<br />
<strong>Table of Contents</strong>
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<a href="#title"><strong>Title</strong></a>
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<a href="#geneMap"><strong>Gene-Phenotype Relationships</strong></a>
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<a href="#text"><strong>Text</strong></a>
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<a href="#description">Description</a>
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<a href="#cloning">Cloning and Expression</a>
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<a href="#geneFunction">Gene Function</a>
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<li role="presentation" style="margin-left: 1em">
<a href="#biochemicalFeatures">Biochemical Features</a>
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<a href="#mapping">Mapping</a>
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<a href="#molecularGenetics">Molecular Genetics</a>
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<a href="#animalModel">Animal Model</a>
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<a href="#allelicVariants"><strong>Allelic Variants</strong></a>
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<a href="#contributors"><strong>Contributors</strong></a>
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<a href="#creationDate"><strong>Creation Date</strong></a>
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<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimProtein">
<span class="panel-title">
<span class="small">
<a href="#mimProteinLinksFold" id="mimProteinLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<span id="mimProteinLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5">&#9658;</span> Protein
</a>
</span>
</span>
</div>
<div id="mimProteinLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://hprd.org/summary?hprd_id=01261&isoform_id=01261_1&isoform_name=Isoform_1" class="mim-tip-hint" title="The Human Protein Reference Database; manually extracted and visually depicted information on human proteins." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HPRD', 'domain': 'hprd.org'})">HPRD</a></div>
<div><a href="https://www.proteinatlas.org/search/AKT1" class="mim-tip-hint" title="The Human Protein Atlas contains information for a large majority of all human protein-coding genes regarding the expression and localization of the corresponding proteins based on both RNA and protein data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HumanProteinAtlas', 'domain': 'proteinatlas.org'})">Human Protein Atlas</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/protein/35481,190828,3716606,3717081,12653417,12804627,54038761,60391226,62241011,62241013,62241015,119602287,119602288,119602289,166706753,189054393,193783804,197692185,197692435,221042640,440502989,558550185,558550187,558550189,558550191,576060886,684774508,684892543,684892545,684892547,957948881,957948884,1009105101,1009105103,1009105105,1009105107,1009105109,1009105111,1009105113,1009105115,1009105117,1009105119,1009105121,1009105123,1009105125,1009105127,1009105129,1009105131,1009105133,1838038787,1838744971,1838744975,1838745031,2217296625,2217296627,2217296629,2217296631,2217296633,2217296635,2217296637,2462539190,2462539192,2462539194,2462539196,2462539198,2462539200" class="mim-tip-hint" title="NCBI protein data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NCBI Protein', 'domain': 'ncbi.nlm.nih.gov'})">NCBI Protein</a></div>
<div><a href="https://www.uniprot.org/uniprotkb/P31749" class="mim-tip-hint" title="Comprehensive protein sequence and functional information, including supporting data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'UniProt', 'domain': 'uniprot.org'})">UniProt</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimGeneInfo">
<span class="panel-title">
<span class="small">
<a href="#mimGeneInfoLinksFold" id="mimGeneInfoLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<div style="display: table-row">
<div id="mimGeneInfoLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Gene Info</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimGeneInfoLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="http://biogps.org/#goto=genereport&id=207" class="mim-tip-hint" title="The Gene Portal Hub; customizable portal of gene and protein function information." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'BioGPS', 'domain': 'biogps.org'})">BioGPS</a></div>
<div><a href="https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000142208;t=ENST00000649815" class="mim-tip-hint" title="Orthologs, paralogs, regulatory regions, and splice variants." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Ensembl', 'domain': 'ensembl.org'})">Ensembl</a></div>
<div><a href="https://www.genecards.org/cgi-bin/carddisp.pl?gene=AKT1" class="mim-tip-hint" title="The Human Genome Compendium; web-based cards integrating automatically mined information on human genes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GeneCards', 'domain': 'genecards.org'})">GeneCards</a></div>
<div><a href="http://amigo.geneontology.org/amigo/search/annotation?q=AKT1" class="mim-tip-hint" title="Terms, defined using controlled vocabulary, representing gene product properties (biologic process, cellular component, molecular function) across species." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GeneOntology', 'domain': 'amigo.geneontology.org'})">Gene Ontology</a></div>
<div><a href="https://www.genome.jp/dbget-bin/www_bget?hsa+207" class="mim-tip-hint" title="Kyoto Encyclopedia of Genes and Genomes; diagrams of signaling pathways." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'KEGG', 'domain': 'genome.jp'})">KEGG</a></div>
<dd><a href="http://v1.marrvel.org/search/gene/AKT1" class="mim-tip-hint" title="Model organism Aggregated Resources for Rare Variant ExpLoration." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MARRVEL', 'domain': 'marrvel.org'})">MARRVEL</a></dd>
<dd><a href="https://monarchinitiative.org/NCBIGene:207" class="mim-tip-hint" title="Monarch Initiative." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Monarch', 'domain': 'monarchinitiative.org'})">Monarch</a></dd>
<div><a href="https://www.ncbi.nlm.nih.gov/gene/207" class="mim-tip-hint" title="Gene-specific map, sequence, expression, structure, function, citation, and homology data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NCBI Gene', 'domain': 'ncbi.nlm.nih.gov'})">NCBI Gene</a></div>
<div><a href="https://genome.ucsc.edu/cgi-bin/hgGene?db=hg38&hgg_chrom=chr14&hgg_gene=ENST00000649815.2&hgg_start=104769349&hgg_end=104795748&hgg_type=knownGene" class="mim-tip-hint" title="UCSC Genome Bioinformatics; gene-specific structure and function information with links to other databases." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'UCSC', 'domain': 'genome.ucsc.edu'})">UCSC</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimClinicalResources">
<span class="panel-title">
<span class="small">
<a href="#mimClinicalResourcesLinksFold" id="mimClinicalResourcesLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<div style="display: table-row">
<div id="mimClinicalResourcesLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Clinical Resources</div>
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</a>
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</div>
<div id="mimClinicalResourcesLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel" aria-labelledby="clinicalResources">
<div class="panel-body small mim-panel-body">
<div><a href="https://search.clinicalgenome.org/kb/gene-dosage/HGNC:391" class="mim-tip-hint" title="A ClinGen curated resource of genes and regions of the genome that are dosage sensitive and should be targeted on a cytogenomic array." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinGen Dosage', 'domain': 'dosage.clinicalgenome.org'})">ClinGen Dosage</a></div>
<div><a href="https://search.clinicalgenome.org/kb/genes/HGNC:391" class="mim-tip-hint" title="A ClinGen curated resource of ratings for the strength of evidence supporting or refuting the clinical validity of the claim(s) that variation in a particular gene causes disease." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinGen Validity', 'domain': 'search.clinicalgenome.org'})">ClinGen Validity</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=164730[mim]" class="mim-tip-hint" title="Genetic Testing Registry." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GTR', 'domain': 'ncbi.nlm.nih.gov'})">GTR</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimVariation">
<span class="panel-title">
<span class="small">
<a href="#mimVariationLinksFold" id="mimVariationLinksToggle" class=" mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<span id="mimVariationLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5">&#9660;</span> Variation
</a>
</span>
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<div id="mimVariationLinksFold" class="panel-collapse collapse in mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.ncbi.nlm.nih.gov/clinvar?term=164730[MIM]" class="mim-tip-hint" title="ClinVar aggregates information about sequence variation and its relationship to human health." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">ClinVar</a></div>
<div><a href="https://www.deciphergenomics.org/gene/AKT1/overview/clinical-info" class="mim-tip-hint" title="DECIPHER" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'DECIPHER', 'domain': 'DECIPHER'})">DECIPHER</a></div>
<div><a href="https://gnomad.broadinstitute.org/gene/ENSG00000142208" class="mim-tip-hint" title="The Genome Aggregation Database (gnomAD), Broad Institute." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'gnomAD', 'domain': 'gnomad.broadinstitute.org'})">gnomAD</a></div>
<div><a href="https://www.ebi.ac.uk/gwas/search?query=AKT1" class="mim-tip-hint" title="GWAS Catalog; NHGRI-EBI Catalog of published genome-wide association studies." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GWAS Catalog', 'domain': 'gwascatalog.org'})">GWAS Catalog&nbsp;</a></div>
<div><a href="https://www.gwascentral.org/search?q=AKT1" class="mim-tip-hint" title="GWAS Central; summary level genotype-to-phenotype information from genetic association studies." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GWAS Central', 'domain': 'gwascentral.org'})">GWAS Central&nbsp;</a></div>
<div><a href="http://www.hgmd.cf.ac.uk/ac/gene.php?gene=AKT1" class="mim-tip-hint" title="Human Gene Mutation Database; published mutations causing or associated with human inherited disease; disease-associated/functional polymorphisms." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HGMD', 'domain': 'hgmd.cf.ac.uk'})">HGMD</a></div>
<div><a href="https://evs.gs.washington.edu/EVS/PopStatsServlet?searchBy=Gene+Hugo&target=AKT1&upstreamSize=0&downstreamSize=0&x=0&y=0" class="mim-tip-hint" title="National Heart, Lung, and Blood Institute Exome Variant Server." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NHLBI EVS', 'domain': 'evs.gs.washington.edu'})">NHLBI EVS</a></div>
<div><a href="https://www.pharmgkb.org/gene/PA24684" class="mim-tip-hint" title="Pharmacogenomics Knowledge Base; curated and annotated information regarding the effects of human genetic variations on drug response." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PharmGKB', 'domain': 'pharmgkb.org'})">PharmGKB</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimAnimalModels">
<span class="panel-title">
<span class="small">
<a href="#mimAnimalModelsLinksFold" id="mimAnimalModelsLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
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<div id="mimAnimalModelsLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Animal Models</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimAnimalModelsLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.alliancegenome.org/gene/HGNC:391" class="mim-tip-hint" title="Search Across Species; explore model organism and human comparative genomics." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Alliance Genome', 'domain': 'alliancegenome.org'})">Alliance Genome</a></div>
<div><a href="https://flybase.org/reports/FBgn0010379.html" class="mim-tip-hint" title="A Database of Drosophila Genes and Genomes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'FlyBase', 'domain': 'flybase.org'})">FlyBase</a></div>
<div><a href="https://www.mousephenotype.org/data/genes/MGI:87986" class="mim-tip-hint" title="International Mouse Phenotyping Consortium." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'IMPC', 'domain': 'knockoutmouse.org'})">IMPC</a></div>
<div><a href="http://v1.marrvel.org/search/gene/AKT1#HomologGenesPanel" class="mim-tip-hint" title="Model organism Aggregated Resources for Rare Variant ExpLoration." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MARRVEL', 'domain': 'marrvel.org'})">MARRVEL</a></div>
<div><a href="http://www.informatics.jax.org/marker/MGI:87986" class="mim-tip-hint" title="Mouse Genome Informatics; international database resource for the laboratory mouse, including integrated genetic, genomic, and biological data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MGI Mouse Gene', 'domain': 'informatics.jax.org'})">MGI Mouse Gene</a></div>
<div><a href="https://www.mmrrc.org/catalog/StrainCatalogSearchForm.php?search_query=" class="mim-tip-hint" title="Mutant Mouse Resource & Research Centers." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MMRRC', 'domain': 'mmrrc.org'})">MMRRC</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/gene/207/ortholog/" class="mim-tip-hint" title="Orthologous genes at NCBI." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NCBI Orthologs', 'domain': 'ncbi.nlm.nih.gov'})">NCBI Orthologs</a></div>
<div><a href="https://www.orthodb.org/?ncbi=207" class="mim-tip-hint" title="Hierarchical catalogue of orthologs." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'OrthoDB', 'domain': 'orthodb.org'})">OrthoDB</a></div>
<div><a href="mim#WormbaseGeneFold" id="mimWormbaseGeneToggle" data-toggle="collapse" class="mim-tip-hint mimTriangleToggle" title="Database of the biology and genome of Caenorhabditis elegans and related nematodes."><span id="mimWormbaseGeneToggleTriangle" class="small" style="margin-left: -0.8em;">&#9658;</span>Wormbase Gene</div>
<div id="mimWormbaseGeneFold" class="collapse">
<div style="margin-left: 0.5em;"><a href="https://wormbase.org/db/gene/gene?name=WBGene00000102;class=Gene" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Wormbase Gene', 'domain': 'wormbase.org'})">WBGene00000102&nbsp;</a></div><div style="margin-left: 0.5em;"><a href="https://wormbase.org/db/gene/gene?name=WBGene00000103;class=Gene" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Wormbase Gene', 'domain': 'wormbase.org'})">WBGene00000103&nbsp;</a></div>
</div>
<div><a href="https://zfin.org/ZDB-GENE-130730-1" class="mim-tip-hint" title="The Zebrafish Model Organism Database." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ZFin', 'domain': 'zfin.org'})">ZFin</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimCellularPathways">
<span class="panel-title">
<span class="small">
<a href="#mimCellularPathwaysLinksFold" id="mimCellularPathwaysLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<div style="display: table-row">
<div id="mimCellularPathwaysLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Cellular Pathways</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimCellularPathwaysLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.genome.jp/dbget-bin/get_linkdb?-t+pathway+hsa:207" class="mim-tip-hint" title="Kyoto Encyclopedia of Genes and Genomes; diagrams of signaling pathways." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'KEGG', 'domain': 'genome.jp'})">KEGG</a></div>
<div><a href="https://reactome.org/content/query?q=AKT1&species=Homo+sapiens&types=Reaction&types=Pathway&cluster=true" class="definition" title="Protein-specific information in the context of relevant cellular pathways." target="_blank" onclick="gtag('event', 'mim_outbound', {{'name': 'Reactome', 'domain': 'reactome.org'}})">Reactome</a></div>
</div>
</div>
</div>
</div>
</div>
</div>
<span>
<span class="mim-tip-bottom" qtip_title="<strong>Looking for this gene or this phenotype in other resources?</strong>" qtip_text="Select a related resource from the dropdown menu and click for a targeted link to information directly relevant.">
&nbsp;
</span>
</span>
</div>
<div class="col-lg-8 col-lg-pull-2 col-md-8 col-md-pull-2 col-sm-8 col-sm-pull-2 col-xs-12">
<div>
<a id="title" class="mim-anchor"></a>
<div>
<a id="number" class="mim-anchor"></a>
<div class="text-right">
&nbsp;
</div>
<div>
<span class="h3">
<span class="mim-font mim-tip-hint" title="Gene description">
<span class="text-danger"><strong>*</strong></span>
164730
</span>
</span>
</div>
</div>
<div>
<a id="preferredTitle" class="mim-anchor"></a>
<h3>
<span class="mim-font">
AKT SERINE/THREONINE KINASE 1; AKT1
</span>
</h3>
</div>
<div>
<br />
</div>
<div>
<a id="alternativeTitles" class="mim-anchor"></a>
<div>
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
</div>
<div>
<h4>
<span class="mim-font">
V-AKT MURINE THYMOMA VIRAL ONCOGENE HOMOLOG 1<br />
ONCOGENE AKT1<br />
PROTEIN KINASE B-ALPHA<br />
PKB-ALPHA<br />
RAC SERINE/THREONINE PROTEIN KINASE
</span>
</h4>
</div>
</div>
<div>
<br />
</div>
</div>
<div>
<a id="approvedGeneSymbols" class="mim-anchor"></a>
<p>
<span class="mim-text-font">
<strong><em>HGNC Approved Gene Symbol: <a href="https://www.genenames.org/tools/search/#!/genes?query=AKT1" class="mim-tip-hint" title="HUGO Gene Nomenclature Committee." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HGNC', 'domain': 'genenames.org'})">AKT1</a></em></strong>
</span>
</p>
</div>
<div>
<a id="cytogeneticLocation" class="mim-anchor"></a>
<p>
<span class="mim-text-font">
<strong>
<em>
Cytogenetic location: <a href="/geneMap/14/593?start=-3&limit=10&highlight=593">14q32.33</a>
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : <a href="https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&position=chr14:104769349-104795748&dgv=pack&knownGene=pack&omimGene=pack" class="mim-tip-hint" title="UCSC Genome Browser; reference sequences and working draft assemblies for a large collection of genomes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'UCSC Genome Browser', 'domain': 'genome.ucsc.edu'})">14:104,769,349-104,795,748</a> </span>
</em>
</strong>
<a href="https://www.ncbi.nlm.nih.gov/" target="_blank" class="small"> (from NCBI) </a>
</span>
</p>
</div>
<div>
<br />
</div>
<div>
<a id="geneMap" class="mim-anchor"></a>
<div style="margin-bottom: 10px;">
<span class="h4 mim-font">
<strong>Gene-Phenotype Relationships</strong>
</span>
</div>
<div>
<table class="table table-bordered table-condensed table-hover small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
<span class="hidden-sm hidden-xs pull-right">
<a href="/clinicalSynopsis/table?mimNumber=114480,114500,615109,167000,176920" class="label label-warning" onclick="gtag('event', 'mim_link', {'source': 'Entry', 'destination': 'clinicalSynopsisTable'})">
View Clinical Synopses
</a>
</span>
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan="5">
<span class="mim-font">
<a href="/geneMap/14/593?start=-3&limit=10&highlight=593">
14q32.33
</a>
</span>
</td>
<td>
<span class="mim-font">
Breast cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114480"> 114480 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known">3</abbr>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Colorectal cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114500"> 114500 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known">3</abbr>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Cowden syndrome 6
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/615109"> 615109 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known">3</abbr>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Ovarian cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/167000"> 167000 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known">3</abbr>
</span>
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Proteus syndrome, somatic
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<a href="/entry/176920"> 176920 </a>
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<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known">3</abbr>
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<strong>TEXT</strong>
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<strong>Description</strong>
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<p>Phosphoinositide 3-kinases, or PI3Ks (see PIK3CA; <a href="/entry/171834">171834</a>), generate specific inositol lipids implicated in the regulation of cell growth, proliferation, survival, differentiation, and cytoskeletal changes. One of the best characterized targets of PI3K lipid products is the protein kinase AKT, or protein kinase B (PKB). In quiescent cells, PKB resides in the cytosol in a low-activity conformation. Upon cellular stimulation, PKB is activated through recruitment to cellular membranes by PI3K lipid products and by phosphorylation by 3-prime phosphoinositide-dependent kinase-1 (PDPK1; <a href="/entry/605213">605213</a>). For a review of the mechanism that activates PKB and the downstream actions of this multifunctional kinase, see <a href="#55" class="mim-tip-reference" title="Vanhaesebroeck, B., Alessi, D. R. &lt;strong&gt;The PI3K-PDK1 connection: more than just a road to PKB.&lt;/strong&gt; Biochem. J. 346: 561-576, 2000.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10698680/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10698680&lt;/a&gt;]" pmid="10698680">Vanhaesebroeck and Alessi (2000)</a>. For a review of the possible role of PKB in glucose transport, see <a href="#19" class="mim-tip-reference" title="Hajduch, E., Litherland, G. J., Hundal, H. S. &lt;strong&gt;Protein kinase B (PKB/Akt)--a key regulator of glucose transport?&lt;/strong&gt; FEBS Lett. 492: 199-203, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11257494/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11257494&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0014-5793(01)02242-6&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11257494">Hajduch et al. (2001)</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=11257494+10698680" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<a id="cloning" class="mim-anchor"></a>
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<p>The AKT oncogene was isolated from the directly transforming murine retrovirus AKT8, which was isolated from an AKR mouse thymoma cell line. <a href="#52" class="mim-tip-reference" title="Staal, S. P. &lt;strong&gt;Molecular cloning of the akt oncogene and its human homologues AKT1 and AKT2: amplification of AKT1 in a primary human gastric adenocarcinoma.&lt;/strong&gt; Proc. Nat. Acad. Sci. 84: 5034-5037, 1987.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/3037531/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;3037531&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1073/pnas.84.14.5034&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="3037531">Staal (1987)</a> cloned the human cellular homolog, AKT1. They found a 20-fold amplification of the AKT1 gene in 1 of 5 gastric adenocarcinomas tested. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=3037531" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Protein phosphorylation is a fundamental process for the regulation of cellular functions. The coordinated action of both protein kinases and phosphatases controls the levels of phosphorylation and, hence, the activity of specific target proteins. One of the predominant roles of protein phosphorylation is in signal transduction, where extracellular signals are amplified and propagated by a cascade of protein phosphorylation and dephosphorylation events. Two of the best characterized signal transduction pathways involve the cAMP-dependent protein kinase (<a href="/entry/188830">188830</a>) and protein kinase C (PKC; <a href="/entry/176960">176960</a>). Each pathway uses a different second-messenger molecule to activate the protein kinase, which, in turn, phosphorylates specific target molecules. Extensive comparisons of kinase sequences defined a common catalytic domain, ranging from 250 to 300 amino acids. This domain contains key amino acids conserved between kinases and are thought to play an essential role in catalysis. <a href="#28" class="mim-tip-reference" title="Jones, P. F., Jakubowicz, T., Pitossi, F. J., Maurer, F., Hemmings, B. A. &lt;strong&gt;Molecular cloning and identification of a serine/threonine protein kinase of the second-messenger subfamily.&lt;/strong&gt; Proc. Nat. Acad. Sci. 88: 4171-4175, 1991.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/1851997/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;1851997&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1073/pnas.88.10.4171&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="1851997">Jones et al. (1991)</a> isolated a partial cDNA that encodes a protein kinase they termed rac (related to the A and C kinases). DNA sequencing identified an open reading frame of 1,440 bp encoding a protein of 480 amino acids. In an in vitro translation system that used RNA transcribed from cloned cDNAs, they demonstrated the synthesis of a protein of corresponding size. The predicted protein contains consensus sequences characteristic of a protein kinase catalytic domain and shows 73% and 68% similarity to protein kinase C and cAMP-dependent protein kinase, respectively. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=1851997" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<a id="geneFunction" class="mim-anchor"></a>
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<strong>Gene Function</strong>
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<p>The serine-threonine protein kinase encoded by the AKT1 gene is catalytically inactive in serum-starved primary and immortalized fibroblasts. <a href="#15" class="mim-tip-reference" title="Franke, T. F., Yang, S.-I., Chan, T. O., Datta, K., Kaziauskas, A., Morrison, D. K., Kaplan, D. R., Tsichlis, P. N. &lt;strong&gt;The protein kinase encoded by the Akt proto-oncogene is a target of the PDGF-activated phosphatidylinositol 3-kinase.&lt;/strong&gt; Cell 81: 727-736, 1995.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/7774014/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;7774014&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/0092-8674(95)90534-0&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="7774014">Franke et al. (1995)</a> showed that AKT1 and the related AKT2 (<a href="/entry/164731">164731</a>) are activated by platelet-derived growth factor (PDGF; <a href="/entry/190040">190040</a>). The activation is rapid and specific, and is abrogated by mutations in the pleckstrin homology domain of AKT1. Other experiments showed that the activation also depends on PDGFRB (<a href="/entry/173410">173410</a>) tyrosines 740 and 751, which bind PIK3 upon phosphorylation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=7774014" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#12" class="mim-tip-reference" title="Dudek, H., Datta, S. R., Franke, T. F., Birnbaum, M. J., Yao, R., Cooper, G. M., Segal, R. A., Kaplan, D. R., Greenberg, M. E. &lt;strong&gt;Regulation of neuronal survival by the serine-threonine protein kinase Akt.&lt;/strong&gt; Science 275: 661-663, 1997.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9005851/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9005851&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.275.5300.661&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="9005851">Dudek et al. (1997)</a> demonstrated that AKT is important for the survival of cerebellar neurons. Thus, the 'orphan' kinase moved center stage as a crucial regulator of life and death decisions emanating from the cell membrane (<a href="#21" class="mim-tip-reference" title="Hemmings, B. A. &lt;strong&gt;Akt signaling: linking membrane events to life and death decisions.&lt;/strong&gt; Science 275: 628-630, 1997.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9019819/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9019819&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.275.5300.628&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="9019819">Hemmings, 1997</a>). The work of <a href="#12" class="mim-tip-reference" title="Dudek, H., Datta, S. R., Franke, T. F., Birnbaum, M. J., Yao, R., Cooper, G. M., Segal, R. A., Kaplan, D. R., Greenberg, M. E. &lt;strong&gt;Regulation of neuronal survival by the serine-threonine protein kinase Akt.&lt;/strong&gt; Science 275: 661-663, 1997.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9005851/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9005851&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.275.5300.661&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="9005851">Dudek et al. (1997)</a> delineated a signaling pathway by which insulin-like growth factor-1 (IGF1; <a href="/entry/147440">147440</a>) promotes the survival of cerebellar neurons. IGF1 activation of PIK3 triggered the activation of 2 protein kinases, AKT and the p70 ribosomal protein S6 kinase (p70-RPS6K). Experiments with pharmacologic inhibitors, as well as expression of wildtype and dominant-inhibitory forms of AKT, demonstrated that AKT but not p70-RPS6K mediates PIK3-dependent survival. The findings suggested that in the developing nervous system AKT is a critical mediator of growth factor-induced neuronal survival. <a href="#14" class="mim-tip-reference" title="Franke, T. F., Kaplan, D. R., Cantley, L. C., Toker, A. &lt;strong&gt;Direct regulation of the Akt proto-oncogene product by phosphatidylinositol-3,4-bisphosphate.&lt;/strong&gt; Science 275: 665-667, 1997.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9005852/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9005852&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.275.5300.665&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="9005852">Franke et al. (1997)</a> defined the specific mechanisms by which lipid products of PIK3 regulate AKT. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=9019819+9005852+9005851" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#42" class="mim-tip-reference" title="Ozes, O. N., Mayo, L. D., Gustin, J. A., Pfeffer, S. R., Pfeffer, L. M., Donner, D. B. &lt;strong&gt;NF-kappa-B activation by tumour necrosis factor requires the Akt serine-threonine kinase.&lt;/strong&gt; Nature 401: 82-85, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10485710/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10485710&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/43466&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10485710">Ozes et al. (1999)</a> showed that AKT1 is involved in the activation of NFKB1 (<a href="/entry/164011">164011</a>) by TNF (<a href="/entry/191160">191160</a>), following the activation of PIK3. Constitutively active AKT1 induces NFKB1 activity, mediated by phosphorylation of IKBKA (<a href="/entry/600664">600664</a>) at threonine 23, which can be blocked by activated NIK (<a href="/entry/604655">604655</a>). Conversely, NIK activation of NFKB, mediated by phosphorylation of IKBKA at serine 176, is blocked by an AKT1 mutant lacking kinase activity (i.e., kinase dead AKT), indicating that both AKT1 and NIK are necessary for TNF activation of NFKB1 through the phosphorylation of IKBKA. IKBKB (IKKB; <a href="/entry/603258">603258</a>) is not phosphorylated by either NIK or AKT1 and is apparently differentially regulated. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10485710" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Most proliferating cells are programmed to undergo apoptosis unless specific survival signals are provided. PDGF promotes cellular proliferation and inhibits apoptosis. <a href="#46" class="mim-tip-reference" title="Romashkova, J. A., Makarov, S. S. &lt;strong&gt;NF-kappa-B is a target of AKT in anti-apoptotic PDGF signalling.&lt;/strong&gt; Nature 401: 86-90, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10485711/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10485711&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/43474&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10485711">Romashkova and Makarov (1999)</a> showed that PDGF activates the RAS/PIK3/AKT1/IKBKA/NFKB1 pathway. In this pathway, NFKB1 does not induce c-myc and apoptosis, but instead induces putative antiapoptotic genes. In response to PDGF, AKT1 transiently associates with IKBK and induces IKBK activation. The authors suggested that under certain conditions PIK3 may activate NFKB1 without the involvement of IKBA (<a href="/entry/164008">164008</a>) or IKBB (<a href="/entry/604495">604495</a>) degradation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10485711" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Survival factors can suppress apoptosis in a transcription-independent manner by activating the serine/threonine kinase AKT1, which then phosphorylates and inactivates components of the apoptotic machinery, including BAD (<a href="/entry/603167">603167</a>) and caspase-9 (<a href="/entry/602234">602234</a>). <a href="#3" class="mim-tip-reference" title="Brunet, A., Bonni, A., Zigmond, M. J., Lin, M. Z., Juo, P., Hu, L. S., Anderson, M. J., Arden, K. C., Blenis, J., Greenberg, M. E. &lt;strong&gt;Akt promotes cell survival by phosphorylating and inhibiting a Forkhead transcription factor.&lt;/strong&gt; Cell 96: 857-868, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10102273/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10102273&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0092-8674(00)80595-4&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10102273">Brunet et al. (1999)</a> demonstrated that AKT1 also regulates the activity of FKHRL1 (FOXO3A; <a href="/entry/602681">602681</a>), a member of the forkhead family of transcription factors. In the presence of survival factors, AKT1 phosphorylates FKHRL1, leading to the association of FKHRL1 with 14-3-3 proteins (see YWHAH, <a href="/entry/113508">113508</a>) and its retention in the cytoplasm. Survival factor withdrawal leads to FKHRL1 dephosphorylation, nuclear translocation, and target gene activation. Within the nucleus, FKHRL1 most likely triggers apoptosis by inducing the expression of genes that are critical for cell death, such as the TNFSF6 gene (<a href="/entry/134638">134638</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10102273" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using in vitro pull-down assays, <a href="#45" class="mim-tip-reference" title="Powell, D. W., Rane, M. J., Chen, Q., Singh, S., McLeish, K. R. &lt;strong&gt;Identification of 14-3-3-zeta as a protein kinase B/Akt substrate.&lt;/strong&gt; J. Biol. Chem. 277: 21639-21642, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11956222/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11956222&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M203167200&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11956222">Powell et al. (2002)</a> showed that recombinant 14-3-3-zeta (<a href="/entry/601288">601288</a>) interacted directly with both recombinant and endogenous PKB within embryonic kidney cell lysates. They found that recombinant PKB phosphorylated 14-3-3-zeta in an in vitro kinase assay, and transfection of active PKB into embryonic kidney cells resulted in phosphorylation of 14-3-3-zeta. By mutation analysis, <a href="#45" class="mim-tip-reference" title="Powell, D. W., Rane, M. J., Chen, Q., Singh, S., McLeish, K. R. &lt;strong&gt;Identification of 14-3-3-zeta as a protein kinase B/Akt substrate.&lt;/strong&gt; J. Biol. Chem. 277: 21639-21642, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11956222/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11956222&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M203167200&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11956222">Powell et al. (2002)</a> determined that the phosphate acceptor was serine-58. They also showed that phosphorylation did not result in 14-3-3-zeta dimerization. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11956222" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#16" class="mim-tip-reference" title="Fulton, D., Gratton, J.-P., McCabe, T. J., Fontana, J., Fujio, Y., Walsh, K., Franke, T. F., Papapetropoulos, A., Sessa, W. C. &lt;strong&gt;Regulation of endothelium-derived nitric oxide production by the protein kinase Akt.&lt;/strong&gt; Nature 399: 597-601, 1999. Note: Erratum: Nature 400: 792 only, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10376602/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10376602&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=10376602[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/21218&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10376602">Fulton et al. (1999)</a> demonstrated that AKT directly phosphorylated eNOS (NOS3; <a href="/entry/163729">163729</a>) and activated the enzyme leading to nitric oxide (NO) production, whereas eNOS mutated at a putative AKT phosphorylation site was resistant to phosphorylation and activation by AKT. Activated AKT increased basal nitric oxide release from endothelial cells, and activation-deficient AKT attenuated NO production stimulated by VEGF (<a href="/entry/192240">192240</a>). Thus, <a href="#16" class="mim-tip-reference" title="Fulton, D., Gratton, J.-P., McCabe, T. J., Fontana, J., Fujio, Y., Walsh, K., Franke, T. F., Papapetropoulos, A., Sessa, W. C. &lt;strong&gt;Regulation of endothelium-derived nitric oxide production by the protein kinase Akt.&lt;/strong&gt; Nature 399: 597-601, 1999. Note: Erratum: Nature 400: 792 only, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10376602/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10376602&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=10376602[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/21218&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10376602">Fulton et al. (1999)</a> concluded the eNOS is an AKT substrate linking signal transduction by AKT to the release of the gaseous second messenger nitric oxide. <a href="#11" class="mim-tip-reference" title="Dimmeler, S., Fleming, I., Fisslthaler, B., Hermann, C., Busse, R., Zeiher, A. M. &lt;strong&gt;Activation of nitric oxide synthase in endothelial cells by Akt-dependent phosphorylation.&lt;/strong&gt; Nature 399: 601-605, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10376603/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10376603&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/21224&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10376603">Dimmeler et al. (1999)</a> demonstrated that AKT mediates the activation of eNOS, leading to increased nitric oxide production. Inhibition of the PIK3 AKT pathway or mutation of the AKT site on eNOS protein at serine-1177 attenuated the serine phosphorylation and prevented the activation of eNOS. Mimicking the phosphorylation of ser1177 directly enhanced enzyme activity and altered the sensitivity of the enzyme to calcium, rendering its activity maximal at subphysiologic concentrations of calcium. Thus, phosphorylation of eNOS by AKT represented a novel calcium-independent regulatory mechanism for activation of eNOS. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=10376603+10376602" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#33" class="mim-tip-reference" title="Lee, M.-J., Thangada, S., Paik, J.-H., Sapkota, G. P., Ancellin, N., Chae, S.-S., Wu, M., Morales-Ruiz, M., Sessa, W. C., Alessi, D. R., Hla, T. &lt;strong&gt;Akt-mediated phosphorylation of the G protein-coupled receptor EDG-1 is required for endothelial cell chemotaxis.&lt;/strong&gt; Molec. Cell 8: 693-704, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11583630/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11583630&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s1097-2765(01)00324-0&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11583630">Lee et al. (2001)</a> showed that sphingosine 1-phosphate (S1P)-induced endothelial cell migration requires the AKT-mediated phosphorylation of the G protein-coupled receptor (GPCR) EDG1 (<a href="/entry/601974">601974</a>). Activated AKT binds to EDG1 and phosphorylates the third intracellular loop at the thr236 residue. Transactivation of EDG1 by AKT is not required for Gi-dependent signaling but is indispensable for RAC activation, cortical actin assembly, and chemotaxis. Indeed, a thr236-to-ala EDG1 mutant sequestered AKT and acted as a dominant-negative GPCR to inhibit S1P-induced RAC activation, chemotaxis, and angiogenesis. Transactivation of GPCRs by AKT may constitute a specificity switch to integrate rapid G protein-dependent signals into long-term cellular phenomena such as cell migration. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11583630" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#17" class="mim-tip-reference" title="Furnari, F. B., Huang, H. J., Cavenee, W. K. &lt;strong&gt;The phosphoinositol phosphatase activity of PTEN mediates a serum-sensitive G1 growth arrest in glioma cells.&lt;/strong&gt; Cancer Res. 58: 5002-5008, 1998.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9823298/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9823298&lt;/a&gt;]" pmid="9823298">Furnari et al. (1998)</a> demonstrated that PTEN (<a href="/entry/601728">601728</a>) can dephosphorylate PIP3, the major product of PIK3. PIP3, in turn, is required for translocation of AKT to the cell membrane, where it is phosphorylated and activated by upstream kinases. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=9823298" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#10" class="mim-tip-reference" title="Dahia, P. L. M., Aguiar, R. C. T., Alberta, J., Kum, J. B., Caron, S., Sill, H., Marsh, D. J., Ritz, J., Freedman, A., Stiles, C., Eng, C. &lt;strong&gt;PTEN is inversely correlated with the cell survival factor Akt/PKB and is inactivated via multiple mechanisms in haematological malignancies.&lt;/strong&gt; Hum. Molec. Genet. 8: 185-193, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9931326/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;9931326&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1093/hmg/8.2.185&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="9931326">Dahia et al. (1999)</a> found that PTEN and phosphorylated AKT levels were inversely correlated in a large majority of samples with primary acute leukemias and non-Hodgkin lymphomas as well as in cell lines from these malignancies. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=9931326" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#61" class="mim-tip-reference" title="Weng, L.-P., Brown, J. L., Eng, C. &lt;strong&gt;PTEN induces apoptosis and cell cycle arrest through phosphoinositol-3-kinase/Akt-dependent and -independent pathways.&lt;/strong&gt; Hum. Molec. Genet. 10: 237-242, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11159942/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11159942&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1093/hmg/10.3.237&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11159942">Weng et al. (2001)</a> demonstrated increased PTEN-mediated cell death of MCF-7 breast cancer cells cultured in low levels of growth factors. The caspase 9-specific inhibitor ZVAD blocked PTEN-induced cell death without altering the effect of PTEN on cell cycle distribution. Overexpression of AKT that contained a dominant-negative acting lys179-to-met mutation induced more cell death but had less effect on the cell cycle than overexpression of PTEN. The authors suggested that the apoptotic MCF-7 cells induced by the overexpression of PTEN were not derived from G1-arrested cells. They further hypothesized that the effect of PTEN on cell death is mediated through the PIK3/AKT pathway, whereas PTEN-mediated cell cycle arrests depend on both PIK3/AKT-dependent and -independent pathways. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11159942" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>By mutation and immunoprecipitation analyses, <a href="#39" class="mim-tip-reference" title="Maira, S.-M., Galetic, I., Brazil, D. P., Kaech, S., Ingley, E., Thelen, M., Hemmings, B. A. &lt;strong&gt;Carboxyl-terminal modulator protein (CTMP), a negative regulator of PKB/Akt and v-Akt at the plasma membrane.&lt;/strong&gt; Science 294: 374-380, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11598301/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11598301&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1062030&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11598301">Maira et al. (2001)</a> established that CTMP (<a href="/entry/606388">606388</a>) forms a complex with the C-terminal regulatory domain of PKB, but not with full-length PKB. Functional and Western blot analyses showed that CTMP inhibits the phosphorylation of PKB and in turn inhibits the phosphorylation of glycogen synthase kinase-3-beta (GSK3B; <a href="/entry/605004">605004</a>), a PKB-mediated phosphorylation event. Antisense inhibition of CTMP increased the ability of PKB to activate its downstream effectors. <a href="#39" class="mim-tip-reference" title="Maira, S.-M., Galetic, I., Brazil, D. P., Kaech, S., Ingley, E., Thelen, M., Hemmings, B. A. &lt;strong&gt;Carboxyl-terminal modulator protein (CTMP), a negative regulator of PKB/Akt and v-Akt at the plasma membrane.&lt;/strong&gt; Science 294: 374-380, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11598301/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11598301&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1062030&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11598301">Maira et al. (2001)</a> proposed that CTMP negatively regulates PKB by directly binding to it and preventing its phosphorylation, whereas PTEN (<a href="/entry/601728">601728</a>) inhibits PKB indirectly by reducing the amounts of phosphatidylinositol trisphosphate at the cell membrane. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11598301" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#26" class="mim-tip-reference" title="Inoki, K., Li, Y., Zhu, T., Wu, J., Guan, K.-L. &lt;strong&gt;TSC2 is phosphorylated and inhibited by Akt and suppresses mTOR signalling.&lt;/strong&gt; Nature Cell Biol. 4: 648-657, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12172553/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12172553&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ncb839&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12172553">Inoki et al. (2002)</a> demonstrated that Akt1 phosphorylates Tsc2 (<a href="/entry/191092">191092</a>), thereby disrupting interaction between Tsc2 and Tsc1 (<a href="/entry/605284">605284</a>). <a href="#44" class="mim-tip-reference" title="Potter, C. J., Pedraza, L. G., Xu, T. &lt;strong&gt;Akt regulates growth by directly phosphorylating Tsc2.&lt;/strong&gt; Nature Cell Biol. 4: 658-665, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12172554/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12172554&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ncb840&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12172554">Potter et al. (2002)</a> described a similar relationship between Akt and Tsc2 in Drosophila. <a href="#26" class="mim-tip-reference" title="Inoki, K., Li, Y., Zhu, T., Wu, J., Guan, K.-L. &lt;strong&gt;TSC2 is phosphorylated and inhibited by Akt and suppresses mTOR signalling.&lt;/strong&gt; Nature Cell Biol. 4: 648-657, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12172553/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12172553&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ncb839&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12172553">Inoki et al. (2002)</a> showed that the Tsc1-Tsc2 complex inhibits the mammalian target of rapamycin (MTOR; <a href="/entry/601231">601231</a>), leading to inhibition of p70 ribosomal S6 kinase-1 (<a href="/entry/608938">608938</a>) and activation of eukaryotic translation initiation factor 4E-binding protein-1 (EIF4EBP1; <a href="/entry/602223">602223</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?term=12172553+12172554" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#49" class="mim-tip-reference" title="Shin, I., Yakes, F. M., Rojo, F., Shin, N.-Y., Bakin, A. V., Baselga, J., Arteaga, C. L. &lt;strong&gt;PKB/Akt mediates cell-cycle progression by phosphorylation of p27(Kip1) at threonine 157 and modulation of its cellular localization.&lt;/strong&gt; Nature Med. 8: 1145-1152, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12244301/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12244301&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm759&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12244301">Shin et al. (2002)</a> demonstrated a novel mechanism of AKT-mediated regulation of the CDK inhibitor p27(KIP1) (<a href="/entry/600778">600778</a>). Blockade of HER2/NEU (<a href="/entry/164870">164870</a>) in tumor cells inhibited AKT kinase activity and upregulated nuclear levels of p27(KIP1). Recombinant AKT and AKT precipitated from tumor cells phosphorylated wildtype p27 in vitro. P27 contains an AKT consensus RXRXXT(157)D within its nuclear localization motif. Active (myristoylated) AKT phosphorylated wildtype p27 in vivo but was unable to phosphorylate a T157A-p27 mutant. Wildtype p27 localized in the cytosol and nucleus, whereas the mutant p27 localized exclusively in the nucleus and was resistant to nuclear exclusion by AKT. Expression of phosphorylated AKT in primary human breast cancers statistically correlated with the expression of p27 in tumor cytosol. <a href="#49" class="mim-tip-reference" title="Shin, I., Yakes, F. M., Rojo, F., Shin, N.-Y., Bakin, A. V., Baselga, J., Arteaga, C. L. &lt;strong&gt;PKB/Akt mediates cell-cycle progression by phosphorylation of p27(Kip1) at threonine 157 and modulation of its cellular localization.&lt;/strong&gt; Nature Med. 8: 1145-1152, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12244301/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12244301&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm759&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12244301">Shin et al. (2002)</a> concluded that AKT may contribute to tumor cell proliferation by phosphorylation and cytosolic retention of p27, thus relieving CDK2 (<a href="/entry/116953">116953</a>) from p27-induced inhibition. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244301" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#34" class="mim-tip-reference" title="Liang, J., Zubovitz, J., Petrocelli, T., Kotchetkov, R., Connor, M. K., Han, K., Lee, J.-H., Ciarallo, S., Catzavelos, C., Beniston, R., Franssen, E., Slingerland, J. M. &lt;strong&gt;PKB/Akt phosphorylates p27, impairs nuclear import of p27 and opposes p27-mediated G1 arrest.&lt;/strong&gt; Nature Med. 8: 1153-1160, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12244302/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12244302&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm761&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12244302">Liang et al. (2002)</a> demonstrated that AKT1 phosphorylates p27, impairs the nuclear import of p27, and opposes cytokine-mediated G1 arrest. In cells transfected with constitutively active AKT, wildtype p27 mislocalized to the cytoplasm, but mutant p27 was nuclear. In cells with activated AKT, wildtype p27 failed to cause G1 arrest, while the antiproliferative effect of mutant p27 was not impaired. Cytoplasm p27 was seen in 41% (52 of 128) primary human breast cancers in conjunction with AKT activation and was correlated with a poor patient prognosis. <a href="#34" class="mim-tip-reference" title="Liang, J., Zubovitz, J., Petrocelli, T., Kotchetkov, R., Connor, M. K., Han, K., Lee, J.-H., Ciarallo, S., Catzavelos, C., Beniston, R., Franssen, E., Slingerland, J. M. &lt;strong&gt;PKB/Akt phosphorylates p27, impairs nuclear import of p27 and opposes p27-mediated G1 arrest.&lt;/strong&gt; Nature Med. 8: 1153-1160, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12244302/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12244302&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm761&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12244302">Liang et al. (2002)</a> concluded that their data showed a novel mechanism whereby AKT impairs p27 function that is associated with an aggressive phenotype in human breast cancer. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244302" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#57" class="mim-tip-reference" title="Viglietto, G., Motti, M. L., Bruni, P., Melillo, R. M., D&#x27;Alessio, A., Califano, D., Vinci, F., Chiappetta, G., Tsichlis, P., Bellacosa, A., Fusco, A., Santoro, M. &lt;strong&gt;Cytoplasmic relocalization and inhibition of the cyclin-dependent kinase inhibitor p27(Kip1) by PKB/Akt-mediated phosphorylation in breast cancer.&lt;/strong&gt; Nature Med. 8: 1136-1144, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12244303/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12244303&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm762&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12244303">Viglietto et al. (2002)</a> independently demonstrated that AKT regulates cell proliferation in breast cancer cells by preventing p27(KIP1)-mediated growth arrest. They also showed that threonine at position 157 is an AKT phosphorylation site and causes retention of p27(KIP1) in the cytoplasm, precluding p27(KIP1)-induced G1 arrest. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244303" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#24" class="mim-tip-reference" title="Humbert, S., Bryson, E. A., Cordelieres, F. P., Connors, N. C., Datta, S. R., Finkbeiner, S., Greenberg, M. E., Saudou, F. &lt;strong&gt;The IGF-1/Akt pathway is neuroprotective in Huntington&#x27;s disease and involves huntingtin phosphorylation by Akt.&lt;/strong&gt; Dev. Cell 2: 831-837, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12062094/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12062094&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s1534-5807(02)00188-0&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12062094">Humbert et al. (2002)</a> found that IGF1 and AKT inhibited mutant huntingtin (<a href="/entry/613004">613004</a>)-induced cell death and formation of intranuclear inclusions of polyQ huntingtin. AKT phosphorylated ser421 of huntingtin with 23 glutamines, and this phosphorylation reduced mutant huntingtin-induced toxicity in primary cultures of rat striatal neurons. Western blot analysis of cerebellum, cortex, and striatum from Huntington disease patients detected the 60-kD full-length AKT protein and a caspase-3 (CASP3; <a href="/entry/600636">600636</a>)-generated 49-kD AKT product. In contrast, normal control brain areas expressed little to no 49-kD AKT. <a href="#24" class="mim-tip-reference" title="Humbert, S., Bryson, E. A., Cordelieres, F. P., Connors, N. C., Datta, S. R., Finkbeiner, S., Greenberg, M. E., Saudou, F. &lt;strong&gt;The IGF-1/Akt pathway is neuroprotective in Huntington&#x27;s disease and involves huntingtin phosphorylation by Akt.&lt;/strong&gt; Dev. Cell 2: 831-837, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12062094/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12062094&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s1534-5807(02)00188-0&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12062094">Humbert et al. (2002)</a> concluded that phosphorylation of huntingtin through the IGF1/AKT pathway is neuroprotective, and they hypothesized that the IGF1/AKT pathway may have a role in Huntington disease. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12062094" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#56" class="mim-tip-reference" title="Vasko, V., Saji, M., Hardy, E., Kruhlak, M., Larin, A., Savchenko, V., Miyakawa, M., Isozaki, O., Murakami, H., Tsushima, T., Burman, K. D., De Micco, C., Ringel, M. D. &lt;strong&gt;Akt activation and localisation correlate with tumour invasion and oncogene expression in thyroid cancer.&lt;/strong&gt; J. Med. Genet. 41: 161-170, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14985374/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14985374&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1136/jmg.2003.015339&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14985374">Vasko et al. (2004)</a> demonstrated Akt involvement in thyroid cancer progression by investigating 46 cancers, 20 follicular adenomas, and adjacent normal tissue by immunohistochemistry for activated Akt (pAkt), Akt1, -2, and -3, and p27 expression. Akt activation was found in 38 cancers (10 of 10 follicular cancers, 26 of 26 papillary cancers, and 2 of 10 follicular variants of papillary cancer) and in only 4 of 66 normal tissue sections and 2 of 10 benign follicular adenomas. Immunoactive pAkt, correlating with Akt1, was expressed most often in areas of capsular invasion and localized to the cytoplasm in papillary cancers, to the nucleus in follicular cancers, and to both compartments in invasive papillary cancers. Nuclear pAkt and Akt1 were associated with cytoplasmic expression of p27, cell invasion, and migration. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=14985374" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#40" class="mim-tip-reference" title="Mangi, A. A., Noiseux, N., Kong, D., He, H., Rezvani, M., Ingwall, J. S., Dzau, V. J. &lt;strong&gt;Mesenchymal stem cells modified with Akt prevent remodeling and restore performance of infarcted hearts.&lt;/strong&gt; Nature Med. 9: 1195-1201, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12910262/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12910262&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm912&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12910262">Mangi et al. (2003)</a> genetically engineered rat mesenchymal stem cells using ex vivo retroviral transduction to overexpress Akt1. Transplantation of 5 x 10(6) cells overexpressing Akt into the ischemic rat myocardium inhibited the process of cardiac remodeling by reducing intramyocardial inflammation, collagen deposition, and cardiac myocyte hypertrophy, regenerated 80 to 90% of lost myocardial volume, and completely normalized systolic and diastolic cardiac function. These observed effects were dose (cell number)-dependent. Mesenchymal stem cells transduced with Akt1 restored 4-fold greater myocardial volume than equal numbers of cells transduced with the reporter gene lacZ. <a href="#40" class="mim-tip-reference" title="Mangi, A. A., Noiseux, N., Kong, D., He, H., Rezvani, M., Ingwall, J. S., Dzau, V. J. &lt;strong&gt;Mesenchymal stem cells modified with Akt prevent remodeling and restore performance of infarcted hearts.&lt;/strong&gt; Nature Med. 9: 1195-1201, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12910262/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12910262&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm912&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12910262">Mangi et al. (2003)</a> concluded that mesenchymal stem cells genetically enhanced with Akt1 can repair infarcted myocardium, prevent remodeling, and nearly normalize cardiac performance. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12910262" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using a murine lymphoma model, <a href="#60" class="mim-tip-reference" title="Wendel, H.-G., de Stanchina, E., Fridman, J. S., Malina, A., Ray, S., Kogan, S., Cordon-Cardo, C., Pelletier, J., Lowe, S. W. &lt;strong&gt;Survival signalling by Akt and eIF4E in oncogenesis and cancer therapy.&lt;/strong&gt; Nature 428: 332-337, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15029198/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15029198&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature02369&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15029198">Wendel et al. (2004)</a> demonstrated that Akt promotes tumorigenesis and drug resistance by disrupting apoptosis, and that disruption of Akt signaling using the mTOR inhibitor rapamycin reverses chemoresistance in lymphomas expressing Akt, but not in those with other apoptotic defects. eIF4E (<a href="/entry/133440">133440</a>), a translational regulator that acts downstream of Akt and mTOR, recapitulated Akt's action in tumorigenesis and drug resistance but was unable to confer sensitivity to rapamycin and chemotherapy. <a href="#60" class="mim-tip-reference" title="Wendel, H.-G., de Stanchina, E., Fridman, J. S., Malina, A., Ray, S., Kogan, S., Cordon-Cardo, C., Pelletier, J., Lowe, S. W. &lt;strong&gt;Survival signalling by Akt and eIF4E in oncogenesis and cancer therapy.&lt;/strong&gt; Nature 428: 332-337, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15029198/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15029198&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature02369&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15029198">Wendel et al. (2004)</a> concluded that their results established Akt signaling through mTOR and eIF4E as an important mechanism of oncogenesis and drug resistance in vivo and revealed how targeting apoptotic programs can restore drug sensitivity in a genotype-dependent manner. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15029198" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#23" class="mim-tip-reference" title="Hu, M. C.-T., Lee, D.-F., Xia, W., Golfman, L. S., Ou-Yang, F., Yang, J.-Y., Zou, Y., Bao, S., Hanada, N., Saso, H., Kobayashi, R., Hung, M.-C. &lt;strong&gt;I-kappa-B kinase promotes tumorigenesis through inhibition of forkhead FOXO3a.&lt;/strong&gt; Cell 117: 225-237, 2004. Note: Erratum: Cell 129: 1427-1428, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15084260/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15084260&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0092-8674(04)00302-2&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15084260">Hu et al. (2004)</a> investigated the pathologic relationship between phosphorylated AKT, or AKT-p, and FOXO3A (<a href="/entry/602681">602681</a>) in primary tumors. FOXO3A was excluded from the nuclei of some tumors lacking AKT-p, suggesting an AKT-independent mechanism of regulating FOXO3A localization. <a href="#23" class="mim-tip-reference" title="Hu, M. C.-T., Lee, D.-F., Xia, W., Golfman, L. S., Ou-Yang, F., Yang, J.-Y., Zou, Y., Bao, S., Hanada, N., Saso, H., Kobayashi, R., Hung, M.-C. &lt;strong&gt;I-kappa-B kinase promotes tumorigenesis through inhibition of forkhead FOXO3a.&lt;/strong&gt; Cell 117: 225-237, 2004. Note: Erratum: Cell 129: 1427-1428, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15084260/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15084260&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0092-8674(04)00302-2&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15084260">Hu et al. (2004)</a> provided evidence for such a mechanism by showing that IKK (see IKKB, <a href="/entry/603258">603258</a>) physically interacted with, phosphorylated, and inhibited FOXO3A independent of AKT and caused proteolysis of FOXO3A via the ubiquitin (see <a href="/entry/191339">191339</a>)-dependent proteasome pathway. Cytoplasmic FOXO3A correlated with expression of IKKB or AKT-p in many tumors and was associated with poor survival in breast cancer. Constitutive expression of IKKB promoted cell proliferation and tumorigenesis that could be overridden by FOXO3A. These results suggested that the negative regulation of FOXO factors by IKK is a key mechanism for promoting cell growth and tumorigenesis. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15084260" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#50" class="mim-tip-reference" title="Song, J., Salek-Ardakani, S., Rogers, P. R., Cheng, M., Van Parijs, L., Croft, M. &lt;strong&gt;The costimulation-regulated duration of PKB activation controls T cell longevity.&lt;/strong&gt; Nature Immun. 5: 150-158, 2004. Note: Erratum: Nature Immun. 5: 1190 only, 2004. Note: Erratum: Nature Immun. 6: 219 only, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14730361/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14730361&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ni1030&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14730361">Song et al. (2004)</a> showed that OX40 (<a href="/entry/600315">600315</a>) engagement sustains activation of PKB and intermediates of PKB signaling pathways, including PI3K, GSK3, and FKHR (FOXO1A; <a href="/entry/136533">136533</a>). T cells from mice lacking Ox40 were unable to maintain PKB activity over time, and this loss of activity coincided with cell death. Expression of active PKB in responding Ox40 -/- cells reversed the survival defect. <a href="#50" class="mim-tip-reference" title="Song, J., Salek-Ardakani, S., Rogers, P. R., Cheng, M., Van Parijs, L., Croft, M. &lt;strong&gt;The costimulation-regulated duration of PKB activation controls T cell longevity.&lt;/strong&gt; Nature Immun. 5: 150-158, 2004. Note: Erratum: Nature Immun. 5: 1190 only, 2004. Note: Erratum: Nature Immun. 6: 219 only, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14730361/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14730361&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ni1030&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14730361">Song et al. (2004)</a> concluded that the duration of signaling needed for long-term survival is much longer than that needed for proliferation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=14730361" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#5" class="mim-tip-reference" title="Cha, T.-L., Zhou, B. P., Xia, W., Wu, Y., Yang, C.-C., Chen, C.-T., Ping, B., Otte, A. P., Hung, M.-C. &lt;strong&gt;Akt-mediated phosphorylation of EZH2 suppresses methylation of lysine 27 in histone H3.&lt;/strong&gt; Science 310: 306-310, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16224021/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16224021&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1118947&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16224021">Cha et al. (2005)</a> showed that AKT phosphorylates EZH2 (<a href="/entry/601573">601573</a>) at serine-21 and suppresses its methyltransferase activity by impeding EZH2 binding to histone H3 (see <a href="/entry/602810">602810</a>), which results in a decrease of lysine-27 trimethylation and derepression of silenced genes. <a href="#5" class="mim-tip-reference" title="Cha, T.-L., Zhou, B. P., Xia, W., Wu, Y., Yang, C.-C., Chen, C.-T., Ping, B., Otte, A. P., Hung, M.-C. &lt;strong&gt;Akt-mediated phosphorylation of EZH2 suppresses methylation of lysine 27 in histone H3.&lt;/strong&gt; Science 310: 306-310, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16224021/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16224021&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1118947&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16224021">Cha et al. (2005)</a> concluded that their results imply that AKT regulates the methylation activity, through phosphorylation of EZH2, which may contribute to oncogenesis. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16224021" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Akt/PKB activation requires the phosphorylation of serine-473. <a href="#47" class="mim-tip-reference" title="Sarbassov, D. D., Guertin, D. A., Ali, S. M., Sabatini, D. M. &lt;strong&gt;Phosphorylation and regulation of Akt/PKB by the rictor-mTOR complex.&lt;/strong&gt; Science 307: 1098-1101, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15718470/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15718470&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1106148&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15718470">Sarbassov et al. (2005)</a> showed that in Drosophila and in human cells TOR and its associated protein rictor (<a href="/entry/609022">609022</a>) are necessary for serine-473 phosphorylation, and that a reduction in rictor or mTOR expression inhibited an AKT/PKB effector. The rictor-mTOR complex directly phosphorylated Akt/PKB on serine-473 in vitro and facilitated threonine-308 phosphorylation by PDK1. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15718470" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#54" class="mim-tip-reference" title="Trotman, L. C., Alimonti, A., Scaglioni, P. P., Koutcher, J. A., Cordon-Cardo, C., Pandolfi, P. P. &lt;strong&gt;Identification of a tumour suppressor network opposing nuclear Akt function.&lt;/strong&gt; Nature 441: 523-536, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16680151/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16680151&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16680151[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature04809&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16680151">Trotman et al. (2006)</a> demonstrated that the PML (<a href="/entry/102578">102578</a>) tumor suppressor prevents cancer by inactivating phosphorylated AKT inside the nucleus. They found in a mouse model that Pml loss markedly accelerated tumor onset, incidence, and progression in Pten (<a href="/entry/601728">601728</a>) heterozygous mutants, and led to female sterility with features that recapitulate the phenotype of Foxo3a knockout mice. <a href="#54" class="mim-tip-reference" title="Trotman, L. C., Alimonti, A., Scaglioni, P. P., Koutcher, J. A., Cordon-Cardo, C., Pandolfi, P. P. &lt;strong&gt;Identification of a tumour suppressor network opposing nuclear Akt function.&lt;/strong&gt; Nature 441: 523-536, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16680151/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16680151&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16680151[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature04809&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16680151">Trotman et al. (2006)</a> showed that PML deficiency on its own leads to tumorigenesis in the prostate, a tissue that is exquisitely sensitive to phosphorylated AKT levels, and demonstrated that PML specifically recruits the AKT phosphatase PP2a (see <a href="/entry/603113">603113</a>) as well phosphorylated AKT into PML nuclear bodies. Notably, <a href="#54" class="mim-tip-reference" title="Trotman, L. C., Alimonti, A., Scaglioni, P. P., Koutcher, J. A., Cordon-Cardo, C., Pandolfi, P. P. &lt;strong&gt;Identification of a tumour suppressor network opposing nuclear Akt function.&lt;/strong&gt; Nature 441: 523-536, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16680151/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16680151&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16680151[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature04809&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16680151">Trotman et al. (2006)</a> found that PML-null cells are impaired in PP2a phosphatase activity towards AKT, and thus accumulate nuclear phosphorylated AKT. As a consequence, the progressive reduction in PML dose leads to inactivation of FOXO3A-mediated transcription of proapoptotic BIM (<a href="/entry/603827">603827</a>) and the cell cycle inhibitor p27(KIP1) (<a href="/entry/600778">600778</a>). <a href="#54" class="mim-tip-reference" title="Trotman, L. C., Alimonti, A., Scaglioni, P. P., Koutcher, J. A., Cordon-Cardo, C., Pandolfi, P. P. &lt;strong&gt;Identification of a tumour suppressor network opposing nuclear Akt function.&lt;/strong&gt; Nature 441: 523-536, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16680151/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16680151&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16680151[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature04809&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16680151">Trotman et al. (2006)</a> concluded that their results demonstrate that PML orchestrates a nuclear tumor suppressor network for inactivation of nuclear phosphorylated AKT, and thus highlight the importance of AKT compartmentalization in human cancer pathogenesis and treatment. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16680151" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>The TORC2 protein complex consists of RICTOR and MTOR (FRAP1; <a href="/entry/601231">601231</a>) and is a putative kinase for AKT. <a href="#27" class="mim-tip-reference" title="Jacinto, E., Facchinetti, V., Liu, D., Soto, N., Wei, S., Jung, S. Y., Huang, Q., Qin, J., Su, B. &lt;strong&gt;SIN1/MIP1 maintains rictor-mTOR complex integrity and regulates Akt phosphorylation and substrate specificity.&lt;/strong&gt; Cell 127: 125-137, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16962653/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16962653&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.cell.2006.08.033&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16962653">Jacinto et al. (2006)</a> identified SIN1 (MAPKAP1; <a href="/entry/610558">610558</a>) as an essential subunit of the TORC2 complex in human cells. Phosphorylation of Akt at ser473 was lost in Sin1 -/- mouse embryonic fibroblasts (MEFs), whereas phosphorylation of thr308 was unaffected. Defective ser473 phosphorylation affected only a subset of Akt targets in vivo, including Foxo1 and Foxo3a. Sin1 -/- MEFs were more sensitive to stress-induced apoptosis, suggesting that phosphorylation of AKT at ser473 plays an important role in cell survival. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16962653" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#31" class="mim-tip-reference" title="Kuijl, C., Savage, N. D. L., Marsman, M., Tuin, A. W., Janssen, L., Egan, D. A., Ketema, M., van den Nieuwendijk, R., van den Eeden, S. J. F., Geluk, A., Poot, A., van der Marel, G., Beijersbergen, R. L., Overkleeft, H., Ottenhoff, T. H. M., Neefjes, J. &lt;strong&gt;Intracellular bacterial growth is controlled by a kinase network around PKB/AKT1.&lt;/strong&gt; Nature 450: 725-730, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18046412/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18046412&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature06345&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18046412">Kuijl et al. (2007)</a> developed kinase inhibitors that prevent intracellular growth of unrelated pathogens such as Salmonella typhimurium and Mycobacterium tuberculosis. An RNA interference screen of the human kinome using automated microscopy revealed several host kinases capable of inhibiting intracellular growth of S. typhimurium. The kinases identified clustered in 1 network around AKT1. Inhibitors of AKT1 prevent intracellular growth of various bacteria including MDR-M. tuberculosis. AKT1 is activated by the S. typhimurium effector SopB, which promotes intracellular survival by controlling actin dynamics through PAK4 (<a href="/entry/605451">605451</a>), and phagosome-lysosome fusion through the AS160 (<a href="/entry/612465">612465</a>)-RAB14 pathway. AKT1 inhibitors counteract the bacterial manipulation of host signaling processes, thus controlling intracellular growth of bacteria. By using a reciprocal chemical genetics approach, <a href="#31" class="mim-tip-reference" title="Kuijl, C., Savage, N. D. L., Marsman, M., Tuin, A. W., Janssen, L., Egan, D. A., Ketema, M., van den Nieuwendijk, R., van den Eeden, S. J. F., Geluk, A., Poot, A., van der Marel, G., Beijersbergen, R. L., Overkleeft, H., Ottenhoff, T. H. M., Neefjes, J. &lt;strong&gt;Intracellular bacterial growth is controlled by a kinase network around PKB/AKT1.&lt;/strong&gt; Nature 450: 725-730, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18046412/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18046412&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature06345&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18046412">Kuijl et al. (2007)</a> identified kinase inhibitors with antibiotic properties and their host targets, and determined host signaling networks that are activated by intracellular bacteria for survival. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=18046412" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#64" class="mim-tip-reference" title="Yang, W.-L., Wang, J., Chan, C.-H., Lee, S.-W., Campos, A. D., Lamothe, B., Hur, L., Grabiner, B. C., Lin, X., Darnay, B. G., Lin, H.-K. &lt;strong&gt;The E3 ligase TRAF6 regulates Akt ubiquitination and activation.&lt;/strong&gt; Science 325: 1134-1138, 2009.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/19713527/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;19713527&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=19713527[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1175065&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="19713527">Yang et al. (2009)</a> found that the protein kinase Akt undergoes lysine-63 chain ubiquitination, which is important for Akt membrane localization and phosphorylation. TRAF6 (<a href="/entry/602355">602355</a>) was found to be a direct E3 ligase for Akt and was essential for Akt ubiquitination, membrane recruitment, and phosphorylation upon growth factor stimulation. The human cancer-associated Akt mutant (<a href="#0001">164730.0001</a>) displayed an increase in Akt ubiquitination, in turn contributing to the enhancement of Akt membrane localization and phosphorylation. Thus, <a href="#64" class="mim-tip-reference" title="Yang, W.-L., Wang, J., Chan, C.-H., Lee, S.-W., Campos, A. D., Lamothe, B., Hur, L., Grabiner, B. C., Lin, X., Darnay, B. G., Lin, H.-K. &lt;strong&gt;The E3 ligase TRAF6 regulates Akt ubiquitination and activation.&lt;/strong&gt; Science 325: 1134-1138, 2009.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/19713527/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;19713527&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=19713527[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1175065&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="19713527">Yang et al. (2009)</a> concluded that Akt ubiquitination is an important step for oncogenic Akt activation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=19713527" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#58" class="mim-tip-reference" title="Virtanen, C., Paris, J., Takahashi, M. &lt;strong&gt;Identification and characterization of a novel gene, dapr, involved in skeletal muscle differentiation and protein kinase B signaling.&lt;/strong&gt; J. Biol. Chem. 284: 1636-1643, 2009.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/19028694/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;19028694&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M807000200&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="19028694">Virtanen et al. (2009)</a> found that Plekhm3 (<a href="/entry/619186">619186</a>) bound endogenous PKB in C2C12 mouse myoblasts, and immunoprecipitation experiments in transfected HeLa cells confirmed the interaction. PKB phosphorylation was not dependent on differentiation status or Plekhm3 expression. Ultracentrifugation experiments in C2C12 cells showed that Plekhm3 and PKB were found in cytoplasm before differentiation, but in both cytoplasm and membrane fractions after differentiation, and that introduction of PKB induced Plekhm3 to move to the membrane. Knockdown of Plekhm3 in C2C12 cells resulted in loss of PKB in the membrane fraction. Knockdown of Plekhm3 also reduced myotube formation and delayed S-actin (see <a href="/entry/102610">102610</a>) expression in differentiating myoblasts. The authors proposed that Plekhm3 may function as a scaffold protein for PKB. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=19028694" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#59" class="mim-tip-reference" title="Wang, R. C., Wei, Y., An, Z., Zou, Z., Xiao, G., Bhagat, G., White, M., Reichelt, J., Levine, B. &lt;strong&gt;Akt-mediated regulation of autophagy and tumorigenesis through beclin 1 phosphorylation.&lt;/strong&gt; Science 338: 956-959, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23112296/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;23112296&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=23112296[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1225967&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="23112296">Wang et al. (2012)</a> showed that beclin-1 (<a href="/entry/604378">604378</a>), an essential autophagy and tumor suppressor protein, is a target of the protein kinase AKT. Expression of a beclin-1 mutant resistant to Akt-mediated phosphorylation increased autophagy, reduced anchorage-independent growth, and inhibited Akt-driven tumorigenesis. Akt-mediated phosphorylation of beclin-1 enhanced its interactions with 14-3-3 (see <a href="/entry/605066">605066</a>) and vimentin (<a href="/entry/193060">193060</a>) intermediate filament proteins, and vimentin depletion increased autophagy and inhibited Akt-driven transformation. Thus, <a href="#59" class="mim-tip-reference" title="Wang, R. C., Wei, Y., An, Z., Zou, Z., Xiao, G., Bhagat, G., White, M., Reichelt, J., Levine, B. &lt;strong&gt;Akt-mediated regulation of autophagy and tumorigenesis through beclin 1 phosphorylation.&lt;/strong&gt; Science 338: 956-959, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23112296/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;23112296&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=23112296[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1225967&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="23112296">Wang et al. (2012)</a> concluded that Akt-mediated phosphorylation of beclin-1 functions in autophagy inhibition, oncogenesis, and the formation of an autophagy-inhibitory beclin-1/14-3-3/vimentin intermediate filament complex, and suggested their findings have broad implications for understanding the role of Akt signaling and intermediate filament proteins in autophagy and cancer. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23112296" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#37" class="mim-tip-reference" title="Liu, P., Begley, M., Michowski, W., Inuzuka, H., Ginzberg, M., Gao, D., Tsou, P., Gan, W., Papa, A., Kim, B. M., Wan, L., Singh, A., and 13 others. &lt;strong&gt;Cell-cycle-regulated activation of Akt kinase by phosphorylation at its carboxyl terminus.&lt;/strong&gt; Nature 508: 541-545, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24670654/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;24670654&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=24670654[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature13079&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="24670654">Liu et al. (2014)</a> reported that AKT activity fluctuates across the cell cycle, mirroring cyclin A2 (CCNA2; <a href="/entry/123835">123835</a>) expression. Mechanistically, phosphorylation of S477 and T479 at the Akt extreme carboxy terminus by cyclin-dependent kinase-2 (CDK2; <a href="/entry/116953">116953</a>)/CCNA2 or mTORC2 (see <a href="/entry/601231">601231</a>), under distinct physiologic conditions, promoted Akt activation through facilitating, or functionally compensating for, S473 phosphorylation. Furthermore, deletion of both Ccna2 alleles in the mouse olfactory bulb led to reduced S477/T479 phosphorylation and elevated cellular apoptosis. Notably, Ccna2 deletion-induced cellular apoptosis in mouse embryonic stem cells was partly rescued by S477D/T479E-Akt1, supporting a physiologic role for Ccna2 in governing Akt activation. <a href="#37" class="mim-tip-reference" title="Liu, P., Begley, M., Michowski, W., Inuzuka, H., Ginzberg, M., Gao, D., Tsou, P., Gan, W., Papa, A., Kim, B. M., Wan, L., Singh, A., and 13 others. &lt;strong&gt;Cell-cycle-regulated activation of Akt kinase by phosphorylation at its carboxyl terminus.&lt;/strong&gt; Nature 508: 541-545, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24670654/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;24670654&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=24670654[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature13079&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="24670654">Liu et al. (2014)</a> concluded that, taken together, the results of their study showed AKT S477/T479 phosphorylation to be an essential layer of the AKT activation mechanism to regulate its physiologic functions, thereby providing a mechanistic link between aberrant cell cycle progression and AKT hyperactivation in cancer. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=24670654" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#30" class="mim-tip-reference" title="Kshirsagar, S., Riedl, M., Billing, H., Tonshoff, B., Thangavadivel, S., Steuber, C., Staude, H., Wechselberger, G., Edelbauer, M. &lt;strong&gt;Akt-dependent enhanced migratory capacity of Th17 cells from children with lupus nephritis.&lt;/strong&gt; J. Immun. 193: 4895-4903, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25339666/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25339666&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.4049/jimmunol.1400044&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25339666">Kshirsagar et al. (2014)</a> reported that enhanced STAT3 (<a href="/entry/102582">102582</a>) activity in CD4 (<a href="/entry/186940">186940</a>)-positive/CD45A (see <a href="/entry/151460">151460</a>)-negative/FOXP3 (<a href="/entry/300292">300292</a>)-negative and FOXP3-low effector T cells from children with lupus nephritis (LN; see <a href="/entry/152700">152700</a>) correlated with increased frequency of IL17 (<a href="/entry/603149">603149</a>)-producing cells within these T-cell populations. Rapamycin treatment reduced both STAT3 activation and Th17 cell frequency in lupus patients. Th17 cells from children with LN exhibited high AKT activity and enhanced migratory capacity. Inhibition of AKT in cells from LN patients resulted in reduced Th17-cell migration. <a href="#30" class="mim-tip-reference" title="Kshirsagar, S., Riedl, M., Billing, H., Tonshoff, B., Thangavadivel, S., Steuber, C., Staude, H., Wechselberger, G., Edelbauer, M. &lt;strong&gt;Akt-dependent enhanced migratory capacity of Th17 cells from children with lupus nephritis.&lt;/strong&gt; J. Immun. 193: 4895-4903, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25339666/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25339666&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.4049/jimmunol.1400044&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25339666">Kshirsagar et al. (2014)</a> concluded that the AKT signaling pathway plays a significant role in Th17-cell migratory activity in children with LN. They suggested that inhibition of AKT may result in suppression of chronic inflammation in LN. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25339666" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#53" class="mim-tip-reference" title="Sun, Y., Cote, J.-F., Du, K. &lt;strong&gt;Elmo2 is a regulator of insulin-dependent Glut4 membrane translocation.&lt;/strong&gt; J. Biol. Chem. 291: 16150-16161, 2016.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/27226625/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;27226625&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=27226625[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M116.731521&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="27226625">Sun et al. (2016)</a> found that overexpression of Elmo2 (<a href="/entry/606421">606421</a>) in mouse adipocytes and rat skeletal muscle cells enhanced insulin-dependent Glut4 (SLC2A4; <a href="/entry/138190">138190</a>) membrane translocation. In contrast, knockdown of Elmo2 suppressed Glut4 translocation. Elmo2 was required for insulin-induced Rac1 (<a href="/entry/602048">602048</a>) GTP loading and Akt membrane association, but not Akt activation, in rat skeletal muscle cells. <a href="#53" class="mim-tip-reference" title="Sun, Y., Cote, J.-F., Du, K. &lt;strong&gt;Elmo2 is a regulator of insulin-dependent Glut4 membrane translocation.&lt;/strong&gt; J. Biol. Chem. 291: 16150-16161, 2016.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/27226625/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;27226625&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=27226625[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M116.731521&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="27226625">Sun et al. (2016)</a> concluded that ELMO2 regulates insulin-dependent GLUT4 membrane translocation by modulating RAC1 activity and AKT membrane compartmentalization. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=27226625" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#18" class="mim-tip-reference" title="Guo, J., Chakraborty, A. A., Liu, P., Gan, W., Zheng, X., Inuzuka, H., Wang, B., Zhang, J., Zhang, L., Yuan, M., Novak, J., Cheng, J. Q., Toker, A., Signoretti, S., Zhang, Q., Asara, J. M., Kaelin, W. G., Jr., Wei, W. &lt;strong&gt;pVHL suppresses kinase activity of Akt in a proline-hydroxylation-dependent manner.&lt;/strong&gt; Science 353: 929-932, 2016.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/27563096/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;27563096&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=27563096[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.aad5755&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="27563096">Guo et al. (2016)</a> explored a possible link between hypoxia and Akt activity. They found that AKT was prolyl-hydroxylated by the oxygen-dependent hydroxylase EGLN1 (<a href="/entry/606425">606425</a>). The von Hippel-Lindau protein (VHL; <a href="/entry/608537">608537</a>) bound directly to hydroxylated AKT and inhibited AKT activity. In cells lacking oxygen or functional VHL, AKT was activated to promote cell survival and tumorigenesis. <a href="#18" class="mim-tip-reference" title="Guo, J., Chakraborty, A. A., Liu, P., Gan, W., Zheng, X., Inuzuka, H., Wang, B., Zhang, J., Zhang, L., Yuan, M., Novak, J., Cheng, J. Q., Toker, A., Signoretti, S., Zhang, Q., Asara, J. M., Kaelin, W. G., Jr., Wei, W. &lt;strong&gt;pVHL suppresses kinase activity of Akt in a proline-hydroxylation-dependent manner.&lt;/strong&gt; Science 353: 929-932, 2016.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/27563096/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;27563096&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=27563096[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.aad5755&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="27563096">Guo et al. (2016)</a> also identified cancer-associated AKT mutations that impair AKT hydroxylation and subsequent recognition by VHL, thus leading to AKT hyperactivation. <a href="#18" class="mim-tip-reference" title="Guo, J., Chakraborty, A. A., Liu, P., Gan, W., Zheng, X., Inuzuka, H., Wang, B., Zhang, J., Zhang, L., Yuan, M., Novak, J., Cheng, J. Q., Toker, A., Signoretti, S., Zhang, Q., Asara, J. M., Kaelin, W. G., Jr., Wei, W. &lt;strong&gt;pVHL suppresses kinase activity of Akt in a proline-hydroxylation-dependent manner.&lt;/strong&gt; Science 353: 929-932, 2016.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/27563096/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;27563096&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=27563096[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.aad5755&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="27563096">Guo et al. (2016)</a> concluded that microenvironmental changes, such as hypoxia, can affect tumor behaviors by altering AKT activation, which has a critical role in tumor growth and therapeutic resistance. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=27563096" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#62" class="mim-tip-reference" title="Xu, D., Wang, Z., Xia, Y., Shao, F., Xia, W., Wei, Y., Li, X., Qian, X., Lee, J.-H., Du, L., Zheng, Y., Lv, G., Leu, J., Wang, H., Xing, D., Liang, T., Hung, M.-C., Lu, Z. &lt;strong&gt;The gluconeogenic enzyme PCK1 phosphorylates INSIG1/2 for lipogenesis.&lt;/strong&gt; Nature 580: 530-535, 2020.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/32322062/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;32322062&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/s41586-020-2183-2&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="32322062">Xu et al. (2020)</a> showed that activated AKT in human hepatocellular carcinoma cells phosphorylates cytosolic phosphoenolpyruvate carboxykinase-1 (PCK1; <a href="/entry/614168">614168</a>), the rate-limiting enzyme in gluconeogenesis, at ser90. Phosphorylated PCK1 translocates to the endoplasmic reticulum, where it uses GTP as a phosphate donor to phosphorylate INSIG1 (<a href="/entry/602055">602055</a>) at ser207 and INSIG2 (<a href="/entry/608660">608660</a>) at ser151. This phosphorylation reduces the binding of sterols to INSIG1 and INSIG2 and disrupts the interaction between INSIG proteins and SCAP (<a href="/entry/601510">601510</a>), leading to the translocation of the SCAP-SREBP complex to the Golgi apparatus, the activation of SREBP proteins (SREBP1, <a href="/entry/184756">184756</a> or SREBP2, <a href="/entry/600481">600481</a>) and the transcription of downstream lipogenesis-related genes, proliferation of tumor cells, and tumorigenesis in mice. In addition, phosphorylation of PCK1 at ser90, INSIG1 at ser207, and INSIG2 at ser151 was not only positively correlated with the nuclear accumulation of SREBP1 in samples from patients with hepatocellular carcinoma, but also associated with poor hepatocellular carcinoma prognosis. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=32322062" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<p><strong><em>Crystal Structure</em></strong></p><p>
The protein activity of PKB is stimulated by phosphorylation at 2 regulatory sites, thr309 of the activation segment and ser474 of the hydrophobic motif, a conserved feature of many AGC kinases. <a href="#63" class="mim-tip-reference" title="Yang, J., Cron, P., Thompson, V., Good, V. M., Hess, D., Hemmings, B. A., Barford, D. &lt;strong&gt;Molecular mechanism for the regulation of protein kinase B/Akt by hydrophobic motif phosphorylation.&lt;/strong&gt; Molec. Cell 9: 1227-1240, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12086620/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12086620&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s1097-2765(02)00550-6&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12086620">Yang et al. (2002)</a> provided a molecular explanation for regulation by ser474 phosphorylation by analyzing the crystal structures of the unphosphorylated and thr309-phosphorylated states of the PKB kinase domain. Activation by ser474 phosphorylation occurs via a disorder-to-order transition of the alpha-C helix with concomitant restructuring of the activation segment and reconfiguration of the kinase bilobal structure. These conformational changes are mediated by a phosphorylation-promoted interaction of the hydrophobic motif with a channel on the N-terminal lobe induced by the ordered alpha-C helix and are mimicked by peptides corresponding to the hydrophobic motif of PKB and potently by the hydrophobic motif of PRK2 (<a href="/entry/602549">602549</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12086620" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<p><a href="#51" class="mim-tip-reference" title="Staal, S. P., Huebner, K., Croce, C. M., Parsa, N. Z., Testa, J. R. &lt;strong&gt;The AKT1 proto-oncogene maps to human chromosome 14, band q32.&lt;/strong&gt; Genomics 2: 96-98, 1988.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/3384441/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;3384441&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/0888-7543(88)90114-0&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="3384441">Staal et al. (1988)</a> mapped the AKT1 gene to chromosome 14q32.3 by analysis of human-hamster somatic cell hybrids and by in situ hybridization of normal human metaphase chromosome spreads with a radioactive AKT1 probe. The AKT1 gene is proximal to the immunoglobulin heavy chain loci. By fluorescence in situ hybridization, <a href="#2" class="mim-tip-reference" title="Bellacosa, A., Franke, T. F., Gonzalez-Portal, M. E., Datta, K., Taguchi, T., Gardner, J., Cheng, J. Q., Testa, J. R., Tsichlis, P. N. &lt;strong&gt;Structure, expression and chromosomal mapping of c-akt: relationship to v-akt and its implications.&lt;/strong&gt; Oncogene 8: 745-754, 1993.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/8437858/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;8437858&lt;/a&gt;]" pmid="8437858">Bellacosa et al. (1993)</a> mapped akt to mouse chromosome 12; furthermore, they showed that the gene is on rat chromosome 6 and that both are in close proximity to the Igh locus. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=8437858+3384441" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<a id="molecularGenetics" class="mim-anchor"></a>
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<p><strong><em>Cowden Syndrome 6</em></strong></p><p>
Among 91 individuals with Cowden syndrome who were negative for mutations in known disease-causing genes, <a href="#41" class="mim-tip-reference" title="Orloff, M. S., He, X., Peterson, C., Chen, F., Chen, J.-L., Mester, J. L., Eng, C. &lt;strong&gt;Germline PIK3CA and AKT1 mutations in Cowden and Cowden-like syndromes.&lt;/strong&gt; Am. J. Hum. Genet. 92: 76-80, 2013.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23246288/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;23246288&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=23246288[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2012.10.021&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="23246288">Orloff et al. (2013)</a> found that 2 carried mutations in the AKT1 gene. None of these mutations were detected in 96 population controls, the Single Nucleotide Polymorphism database (dbSNP), or the available dataset of the 1000 Genomes Project. Functional assays demonstrated that these mutations resulted in upregulation of AKT1 phosphorylated at thr308 (P-AKT1-Thr308). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23246288" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><strong><em>Breast, Colorectal, and Ovarian Cancer</em></strong></p><p>
<a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> reported the identification of a somatic mutation in human breast, colorectal, and ovarian cancers that results in a glutamic acid-to-lysine substitution at amino acid 17 (see <a href="#0001">164730.0001</a>) in the lipid-binding pocket of AKT1. Lys17 alters the electrostatic interactions of the pocket and forms new hydrogen bonds with a phosphoinositide ligand. This mutation activates AKT1 by means of pathologic localization to the plasma membrane, stimulates downstream signaling, transforms cells, and induces leukemia in mice. <a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> concluded that this mechanism indicates a direct role of AKT1 in human cancer, and adds to the known genetic alterations that promote oncogenesis through the phosphatidylinositol-3-OH kinase/AKT pathway. Furthermore, <a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> suggested that the E17K substitution decreases the sensitivity to an allosteric kinase inhibitor, so this mutation may have important clinical utility for AKT drug development. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=17611497" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><strong><em>Proteus Syndrome</em></strong></p><p>
Using exome sequencing followed by a custom restriction-enzyme assay, <a href="#36" class="mim-tip-reference" title="Lindhurst, M. J., Sapp, J. C., Teer, J. K., Johnston, J. J., Finn, E. M., Peters, K., Turner, J., Cannons, J. L., Bick, D., Blakemore, L., Blumhorst, C., Brockmann, K., and 28 others. &lt;strong&gt;A mosaic activating mutation in AKT1 associated with the Proteus syndrome.&lt;/strong&gt; New Eng. J. Med. 365: 611-619, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21793738/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;21793738&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21793738[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1056/NEJMoa1104017&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="21793738">Lindhurst et al. (2011)</a> demonstrated that the activating AKT1 E17K mutation (<a href="#0001">164730.0001</a>) was present in one or more samples from 26 (90%) of 29 patients with Proteus syndrome (<a href="/entry/176920">176920</a>) who were tested; the fraction of mutant DNA in the positive specimens ranged from 1% to approximately 50%. The authors stated that there was no association between the proportion of mutant alleles and the overall clinical severity or specific manifestations of the phenotype; in addition, their data did not suggest a specific stage during development at which the mutation arose in these patients. <a href="#36" class="mim-tip-reference" title="Lindhurst, M. J., Sapp, J. C., Teer, J. K., Johnston, J. J., Finn, E. M., Peters, K., Turner, J., Cannons, J. L., Bick, D., Blakemore, L., Blumhorst, C., Brockmann, K., and 28 others. &lt;strong&gt;A mosaic activating mutation in AKT1 associated with the Proteus syndrome.&lt;/strong&gt; New Eng. J. Med. 365: 611-619, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21793738/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;21793738&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21793738[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1056/NEJMoa1104017&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="21793738">Lindhurst et al. (2011)</a> noted that their findings supported the mosaicism hypothesis that had earlier been advanced by <a href="#20" class="mim-tip-reference" title="Happle, R. &lt;strong&gt;Lethal genes surviving by mosaicism: a possible explanation for sporadic birth defects involving the skin.&lt;/strong&gt; J. Am. Acad. Derm. 16: 899-906, 1987.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/3033033/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;3033033&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0190-9622(87)80249-9&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="3033033">Happle (1987)</a>, who suggested that sporadically occurring disorders with an irregular distribution of skin involvement, such as Proteus syndrome, might be the result of an autosomal dominant lethal gene that was compatible with survival only in the mosaic state. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=21793738+3033033" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><strong><em>Associations Pending Confirmation</em></strong></p><p>
---Schizophrenia</p><p>AKT-GSK3B signaling is a target of lithium and as such has been implicated in the pathogenesis of mood disorders. <a href="#13" class="mim-tip-reference" title="Emamian, E. S., Hall, D., Birnbaum, M. J., Karayiorgou, M., Gogos, J. A. &lt;strong&gt;Convergent evidence for impaired AKT1-GSK3-beta signaling in schizophrenia.&lt;/strong&gt; Nature Genet. 36: 131-137, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14745448/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14745448&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng1296&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14745448">Emamian et al. (2004)</a> provided evidence that this signaling pathway also has a role in schizophrenia (SCZD; <a href="/entry/181500">181500</a>). Specifically, they presented convergent evidence for a decrease in AKT1 protein levels and levels of phosphorylation of GSK3B at serine-9 in the peripheral lymphocytes and brains of individuals with schizophrenia; a significant association between schizophrenia and an AKT1 haplotype associated with lower AKT1 protein levels; and a greater sensitivity to the sensorimotor gating-disruptive effect of amphetamine, conferred by AKT1 deficiency. The findings supported the proposal that alterations in AKT1-GSK3B signaling contribute to schizophrenia pathogenesis and identified AKT1 as a potential schizophrenia susceptibility gene. Consistent with this proposal, <a href="#13" class="mim-tip-reference" title="Emamian, E. S., Hall, D., Birnbaum, M. J., Karayiorgou, M., Gogos, J. A. &lt;strong&gt;Convergent evidence for impaired AKT1-GSK3-beta signaling in schizophrenia.&lt;/strong&gt; Nature Genet. 36: 131-137, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14745448/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14745448&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng1296&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14745448">Emamian et al. (2004)</a> also showed that haloperidol induces a stepwise increase in regulatory phosphorylation of AKT1 in the brains of treated mice that could compensate for an impaired function of this signaling pathway in schizophrenia. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=14745448" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using the 5 single-nucleotide polymorphisms described by <a href="#13" class="mim-tip-reference" title="Emamian, E. S., Hall, D., Birnbaum, M. J., Karayiorgou, M., Gogos, J. A. &lt;strong&gt;Convergent evidence for impaired AKT1-GSK3-beta signaling in schizophrenia.&lt;/strong&gt; Nature Genet. 36: 131-137, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/14745448/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;14745448&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng1296&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="14745448">Emamian et al. (2004)</a> and 2 additional SNPs, <a href="#48" class="mim-tip-reference" title="Schwab, S. G., Hoefgen, B., Hanses, C., Hassenbach, M. B., Albus, M., Lerer, B., Trixler, M., Maier, W., Wildenauer, D. B. &lt;strong&gt;Further evidence for association of variants in the AKT1 gene with schizophrenia in a sample of European sib-pair families.&lt;/strong&gt; Biol. Psychiat. 58: 446-450, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16026766/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16026766&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.biopsych.2005.05.005&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16026766">Schwab et al. (2005)</a> investigated the association between the AKT1 gene variants in a sample of 79 of their families with schizophrenia. They obtained statistical significance for single markers (p = 0.002) and multilocus haplotypes (p = 0.0013) located in the same region reported in the previous study. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=16026766+14745448" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<p><a href="#22" class="mim-tip-reference" title="Holland, E. C., Celestino, J., Dai, C., Schaefer, L., Sawaya, R. E., Fuller, G. N. &lt;strong&gt;Combined activation of Ras and Akt in neural progenitors induces glioblastoma formation in mice.&lt;/strong&gt; Nature Genet. 25: 55-57, 2000.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10802656/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10802656&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/75596&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10802656">Holland et al. (2000)</a> transferred, in a tissue-specific manner, genes encoding activated forms of Ras (<a href="/entry/190070">190070</a>) and Akt to astrocytes and neural progenitors in mice. <a href="#22" class="mim-tip-reference" title="Holland, E. C., Celestino, J., Dai, C., Schaefer, L., Sawaya, R. E., Fuller, G. N. &lt;strong&gt;Combined activation of Ras and Akt in neural progenitors induces glioblastoma formation in mice.&lt;/strong&gt; Nature Genet. 25: 55-57, 2000.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10802656/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10802656&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/75596&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10802656">Holland et al. (2000)</a> found that although neither activated Ras nor Akt alone was sufficient to induce glioblastoma multiforme (GBM; <a href="/entry/137800">137800</a>) formation, the combination of activated Ras and Akt induced high-grade gliomas with the histologic features of human GBMs. These tumors appeared to arise after gene transfer to neural progenitors, but not after transfer to differentiated astrocytes. Increased activity of RAS is found in many human GBMs, and <a href="#22" class="mim-tip-reference" title="Holland, E. C., Celestino, J., Dai, C., Schaefer, L., Sawaya, R. E., Fuller, G. N. &lt;strong&gt;Combined activation of Ras and Akt in neural progenitors induces glioblastoma formation in mice.&lt;/strong&gt; Nature Genet. 25: 55-57, 2000.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10802656/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;10802656&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/75596&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10802656">Holland et al. (2000)</a> demonstrated that Akt activity is increased in most of these tumors, implying that combined activation of these 2 pathways accurately models the biology of this disease. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10802656" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>By targeted disruption of the Akt1 gene, <a href="#8" class="mim-tip-reference" title="Chen, W. S., Xu, P.-Z., Gottlob, K., Chen, M.-L., Sokol, K., Shiyanova, T., Roninson, I., Weng, W., Suzuki, R., Tobe, K., Kadowaki, T., Hay, N. &lt;strong&gt;Growth retardation and increased apoptosis in mice with homozygous disruption of the akt1 gene.&lt;/strong&gt; Genes Dev. 15: 2203-2208, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11544177/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11544177&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=11544177[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1101/gad.913901&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11544177">Chen et al. (2001)</a> created an Akt1-null mouse model. Homozygous mice were viable but smaller than wildtype littermates, and they did not display a diabetic phenotype. Upon exposure to genotoxic stress, their life span was shorter. <a href="#8" class="mim-tip-reference" title="Chen, W. S., Xu, P.-Z., Gottlob, K., Chen, M.-L., Sokol, K., Shiyanova, T., Roninson, I., Weng, W., Suzuki, R., Tobe, K., Kadowaki, T., Hay, N. &lt;strong&gt;Growth retardation and increased apoptosis in mice with homozygous disruption of the akt1 gene.&lt;/strong&gt; Genes Dev. 15: 2203-2208, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11544177/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11544177&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=11544177[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1101/gad.913901&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11544177">Chen et al. (2001)</a> found that the Akt1-null mice showed increased spontaneous apoptosis in testes and thymi. They observed an attenuation of spermatogenesis in the Akt1-null male mice, and thymocytes were more sensitive to gamma irradiation and dexamethasone-induced apoptosis. Akt1-null mouse embryo fibroblasts were also more susceptible to apoptosis induced by TNF, anti-Fas (<a href="/entry/134637">134637</a>), ultraviolet irradiation, and serum withdrawal. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11544177" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>To determine the effects of AKT on cardiac function in vivo, <a href="#9" class="mim-tip-reference" title="Condorelli, G., Drusco, A., Stassi, G., Bellacosa, A., Roncarati, R., Iaccarino, G., Russo, M. A., Gu, Y., Dalton, N., Chung, C., Latronico, M. V. G., Napoli, C., Sadoshima, J., Croce, C. M., Ross, J., Jr. &lt;strong&gt;Akt induces enhanced myocardial contractility and cell size in vivo in transgenic mice.&lt;/strong&gt; Proc. Nat. Acad. Sci. 99: 12333-12338, 2002.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12237475/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12237475&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=12237475[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1073/pnas.172376399&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12237475">Condorelli et al. (2002)</a> generated a mouse model of cardiac-specific Akt overexpression. Transgenic mice were generated by using the E40K, constitutively active mutant of Akt linked to the rat alpha-myosin heavy chain promoter (<a href="/entry/160710">160710</a>). The effects of cardiac-selective Akt overexpression were studied by echocardiography, cardiac catheterization, and histologic and biochemical techniques. Akt overexpression produced cardiac hypertrophy at the molecular and histologic levels, with a significant increase in cardiomyocyte cell size and concentric left ventricular hypertrophy. Akt-transgenic mice also showed a remarkable increase in cardiac contractility compared with wildtype controls as demonstrated in an invasive hemodynamic study. Diastolic function was not affected at rest but was impaired during graded dobutamine infusion. Other studies indicated that Akt induced hypertrophy in vivo by activating the GSK3B/GATA4 (<a href="/entry/600576">600576</a>) pathway. These results demonstrated that Akt regulates cardiomyocyte cell size in vivo and that Akt modulates cardiac contractility in vivo without directly affecting beta-adrenergic receptor (see <a href="/entry/109630">109630</a>) signaling capacity. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12237475" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#29" class="mim-tip-reference" title="Kim, Y.-K., Kim, S.-J., Yatani, A., Huang, Y., Castelli, G., Vatner, D. E., Liu, J., Zhang, Q., Diaz, G., Zieba, R., Thaisz, J., Drusco, A., Croce, C., Sadoshima, J., Cordorelli, G., Vatner, S. F. &lt;strong&gt;Mechanism of enhanced cardiac function in mice with hypertrophy induced by overexpressed Akt.&lt;/strong&gt; J. Biol. Chem. 278: 47622-47628, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/13129932/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;13129932&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M305909200&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="13129932">Kim et al. (2003)</a> found that, in addition to hypertrophy, transgenic mice with cardiac-specific overexpression of active Akt showed enhanced left ventricular function. Isolated ventricular myocytes showed increased contractility, which was associated with increased Ca(2+) transients and Ca(2+) channel currents. The rate of relaxation was also enhanced. <a href="#29" class="mim-tip-reference" title="Kim, Y.-K., Kim, S.-J., Yatani, A., Huang, Y., Castelli, G., Vatner, D. E., Liu, J., Zhang, Q., Diaz, G., Zieba, R., Thaisz, J., Drusco, A., Croce, C., Sadoshima, J., Cordorelli, G., Vatner, S. F. &lt;strong&gt;Mechanism of enhanced cardiac function in mice with hypertrophy induced by overexpressed Akt.&lt;/strong&gt; J. Biol. Chem. 278: 47622-47628, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/13129932/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;13129932&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1074/jbc.M305909200&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="13129932">Kim et al. (2003)</a> determined that Serca2a protein levels were increased by 6.6-fold in transgenic animals, and inhibitor studies suggested that Serca2a overexpression mediated the enhanced left ventricular function. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=13129932" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#43" class="mim-tip-reference" title="Peng, X., Xu, P.-Z., Chen, M.-L., Hahn-Windgassen, A., Skeen, J., Jacobs, J., Sundararajan, D., Chen, W. S., Crawford, S. E., Coleman, K. G., Hay, N. &lt;strong&gt;Dwarfism, impaired skin development, skeletal muscle atrophy, delayed bone development, and impeded adipogenesis in mice lacking Akt1 and Akt2.&lt;/strong&gt; Genes Dev. 17: 1352-1365, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12782654/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;12782654&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=12782654[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1101/gad.1089403&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="12782654">Peng et al. (2003)</a> developed Akt1/Akt2 double-knockout (DKO) mice. DKO mice showed severe growth deficiency and died shortly after birth. These mice displayed impaired skin development due to a proliferation defect, skeletal muscle atrophy due to marked decrease in individual muscle cell size, and impaired bone development. The defects were similar to the phenotype of Igf1 receptor (IGF1R; <a href="/entry/147370">147370</a>)-deficient mice, suggesting that Akt may serve as an important downstream effector of Igf1r during mouse development. DKO mice also displayed impeded adipogenesis through decreased induction of Pparg (<a href="/entry/601487">601487</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12782654" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using adenoviral vectors, <a href="#25" class="mim-tip-reference" title="Iaccarino, G., Ciccarelli, M., Sorriento, D., Cipolletta, E., Cerullo, V., Iovino, G. L., Paudice, A., Elia, A., Santulli, G., Campanile, A., Arcucci, O., Pastore, L., Salvatore, F., Condorelli, G., Trimarco, B. &lt;strong&gt;AKT participates in endothelial dysfunction in hypertension.&lt;/strong&gt; Circulation 109: 2587-2593, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15136501/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15136501&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1161/01.CIR.0000129768.35536.FA&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15136501">Iaccarino et al. (2004)</a> selectively transferred the human AKT1 gene to the common carotid endothelium of normotensive and spontaneously hypertensive rats (SHR). In vitro, the endothelial vasorelaxation response to acetylcholine, isoproterenol, and insulin was blunted in control carotids from SHR compared to normotensive rats, and human AKT1 overexpression corrected those responses. Blood flow assessed in vivo by Doppler ultrasound was reduced in SHR compared to normotensive rat carotids and normalized after AKT1 gene transfer. In primary cultured endothelial cells, there was mislocalization of AKT1 in SHR. <a href="#25" class="mim-tip-reference" title="Iaccarino, G., Ciccarelli, M., Sorriento, D., Cipolletta, E., Cerullo, V., Iovino, G. L., Paudice, A., Elia, A., Santulli, G., Campanile, A., Arcucci, O., Pastore, L., Salvatore, F., Condorelli, G., Trimarco, B. &lt;strong&gt;AKT participates in endothelial dysfunction in hypertension.&lt;/strong&gt; Circulation 109: 2587-2593, 2004.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/15136501/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;15136501&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1161/01.CIR.0000129768.35536.FA&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="15136501">Iaccarino et al. (2004)</a> concluded that AKT1 plays a role in endothelial dysfunction in hypertension, and suggested that impaired membrane localization may be the pathogenic mechanism. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15136501" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#1" class="mim-tip-reference" title="Ackah, E., Yu, J., Zoellner, S., Iwakiri, Y., Skurk, C., Shibata, R., Ouchi, N., Easton, R. M., Galasso, G., Birnbaum, M. J., Walsh, K., Sessa, W. C. &lt;strong&gt;Akt1/protein kinase B-alpha is critical for ischemic and VEGF-mediated angiogenesis.&lt;/strong&gt; J. Clin. Invest. 115: 2119-2127, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16075056/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16075056&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16075056[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1172/JCI24726&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16075056">Ackah et al. (2005)</a> found that loss of Akt1, but not Akt2, resulted in defective ischemia and Vegf-induced angiogenesis and severe peripheral vascular disease in mice. Akt1-knockout mice also had reduced endothelial progenitor cell (EPC) mobilization in response to ischemia. Introduction of EPCs from wildtype mice, but not EPCs from Akt1 -/- mice, into wildtype mice improved limb blood flow after ischemia. Loss of Akt1 reduced basal phosphorylation of several Akt substrates, migration of fibroblasts and endothelial cells, and nitric oxide release. <a href="#1" class="mim-tip-reference" title="Ackah, E., Yu, J., Zoellner, S., Iwakiri, Y., Skurk, C., Shibata, R., Ouchi, N., Easton, R. M., Galasso, G., Birnbaum, M. J., Walsh, K., Sessa, W. C. &lt;strong&gt;Akt1/protein kinase B-alpha is critical for ischemic and VEGF-mediated angiogenesis.&lt;/strong&gt; J. Clin. Invest. 115: 2119-2127, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16075056/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16075056&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16075056[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1172/JCI24726&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16075056">Ackah et al. (2005)</a> concluded that AKT1 exerts an essential role in blood flow control, cellular migration, and nitric oxide synthesis during postnatal angiogenesis. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16075056" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#38" class="mim-tip-reference" title="Liu, S., Premont, R. T., Kontos, C. D., Zhu, S., Rockey, D. C. &lt;strong&gt;A crucial role for GRK2 in regulation of endothelial cell nitric oxide synthase function in portal hypertension.&lt;/strong&gt; Nature Med. 11: 952-958, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16142243/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16142243&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm1289&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16142243">Liu et al. (2005)</a> presented evidence suggesting a role for G protein-coupled receptor kinase-2 (GRK2; <a href="/entry/109635">109635</a>) in hepatic vascular dynamics in a rat model of liver sinusoidal endothelial injury and portal hypertension induced by bile duct ligation. Sinusoidal endothelial cells isolated from the affected animals had increased levels of GRK2, reduced levels of phosphorylated AKT and eNOS, and decreased levels of the vasodilator NO. Further analysis showed that the C terminus of GRK2 bound to and inhibited the phosphorylation and activation of AKT. Gene silencing of GRK2 using siRNA in injured sinusoidal endothelial cells restored AKT activity and resulted in increased NO production. <a href="#38" class="mim-tip-reference" title="Liu, S., Premont, R. T., Kontos, C. D., Zhu, S., Rockey, D. C. &lt;strong&gt;A crucial role for GRK2 in regulation of endothelial cell nitric oxide synthase function in portal hypertension.&lt;/strong&gt; Nature Med. 11: 952-958, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16142243/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16142243&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm1289&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16142243">Liu et al. (2005)</a> also found that heterozygous Grk2 mice had increased levels of phosphorylated Akt and decreased portal hypertension in response to injury compared to wildtype mice. <a href="#38" class="mim-tip-reference" title="Liu, S., Premont, R. T., Kontos, C. D., Zhu, S., Rockey, D. C. &lt;strong&gt;A crucial role for GRK2 in regulation of endothelial cell nitric oxide synthase function in portal hypertension.&lt;/strong&gt; Nature Med. 11: 952-958, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16142243/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16142243&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm1289&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16142243">Liu et al. (2005)</a> proposed a mechanism in which upregulation of GRK2 after endothelial cell injury directly inhibits phosphorylation of AKT, leading to reduced activation of eNOS and decreased production of NO, and resulting in portal hypertension. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16142243" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#6" class="mim-tip-reference" title="Chen, J., Somanath, P. R., Razorenova, O., Chen, W. S., Hay, N., Bornstein, P., Byzova, T. V. &lt;strong&gt;Akt1 regulates pathological angiogenesis, vascular maturation and permeability in vivo.&lt;/strong&gt; Nature Med. 11: 1188-1196, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16227992/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16227992&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16227992[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm1307&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16227992">Chen et al. (2005)</a> demonstrated in mice that Akt1 is the predominant isoform in vascular endothelial cells. In vitro endothelial cells from Akt1-null mice showed impaired migration in response to VEGF and bound 3 times less fibrinogen (see <a href="/entry/134820">134820</a>) than wildtype cells. Akt1-null mice showed significantly enhanced angiogenesis, which was associated with impaired blood vessel maturation and increased vascular permeability. The neovasculature in Akt1-null mice had decreased basement membrane thickness and decreased laminin (see <a href="/entry/156225">156225</a>) deposition. These changes were associated with reduced expression of thrombospondin-1 (THBS1; <a href="/entry/188060">188060</a>) and -2 (THBS2; <a href="/entry/188061">188061</a>). <a href="#6" class="mim-tip-reference" title="Chen, J., Somanath, P. R., Razorenova, O., Chen, W. S., Hay, N., Bornstein, P., Byzova, T. V. &lt;strong&gt;Akt1 regulates pathological angiogenesis, vascular maturation and permeability in vivo.&lt;/strong&gt; Nature Med. 11: 1188-1196, 2005.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16227992/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16227992&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16227992[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nm1307&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16227992">Chen et al. (2005)</a> concluded that Akt1 is vital for the regulation of vascular permeability, angiogenic responses, and vascular maturation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16227992" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#7" class="mim-tip-reference" title="Chen, M.-L., Xu, P.-Z., Peng, X., Chen, W. S., Guzman, G., Yang, X., Di Cristofano, A., Pandolfi, P. P., Hay, N. &lt;strong&gt;The deficiency of Akt1 is sufficient to suppress tumor development in Pten+/- mice.&lt;/strong&gt; Genes Dev. 20: 1569-1574, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/16778075/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;16778075&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=16778075[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1101/gad.1395006&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="16778075">Chen et al. (2006)</a> demonstrated that Akt1 deficiency attenuated tumor development in Pten +/- mice. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16778075" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using gene expression profiling, <a href="#32" class="mim-tip-reference" title="Lai, W.-S., Xu, B., Westphal, K. G. C., Paterlini, M., Olivier, B., Pavlidis, P., Karayiorgou, M., Gogos, J. A. &lt;strong&gt;Akt1 deficiency affects neuronal morphology and predisposes to abnormalities in prefrontal cortex functioning.&lt;/strong&gt; Proc. Nat. Acad. Sci. 103: 16906-16911, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17077150/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17077150&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=17077150[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1073/pnas.0604994103&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17077150">Lai et al. (2006)</a> found that Akt1-deficient mice showed alterations in the expression of genes in the prefrontal cortex involved in synaptic function, neuronal development, myelination, and actin polymerization. Although there was no detectable difference in expression of key dopamine-related genes, there was a trend for an increase in extracellular dopamine in the prefrontal cortex. Ultrastructural analysis showed changed in the dendritic architecture of pyramidal neurons in the prefrontal cortex. Akt1-deficient mice had normal acquisition of prefrontal cortex-dependent cognitive tasks but abnormal working memory retention under neurochemical challenge. <a href="#32" class="mim-tip-reference" title="Lai, W.-S., Xu, B., Westphal, K. G. C., Paterlini, M., Olivier, B., Pavlidis, P., Karayiorgou, M., Gogos, J. A. &lt;strong&gt;Akt1 deficiency affects neuronal morphology and predisposes to abnormalities in prefrontal cortex functioning.&lt;/strong&gt; Proc. Nat. Acad. Sci. 103: 16906-16911, 2006.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17077150/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17077150&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=17077150[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1073/pnas.0604994103&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17077150">Lai et al. (2006)</a> suggested that the changes observed in Akt1-deficient mice may offer insight into changes observed in patients with schizophrenia. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=17077150" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>Using 2 different methods, chimeric and mosaic, <a href="#35" class="mim-tip-reference" title="Lindhurst, M. J., Brinster, L. R., Kondolf, H. C., Shwetar, J. J., Yourick, M. R., Shiferaw, H., Keppler-Noreuil, K. M., Elliot, G., Rivas, C., Garrett, L., Gomez-Rodriguez, J., Sebire, N. J., Hewitt, S. M., Schwartzberg, P. L., Biesecker, L. G. &lt;strong&gt;A mouse model of Proteus syndrome.&lt;/strong&gt; Hum. Molec. Genet. 28: 2920-2936, 2019.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/31194862/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;31194862&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=31194862[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1093/hmg/ddz116&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="31194862">Lindhurst et al. (2019)</a> generated Proteus syndrome mouse models that endogenously regulated mosaic expression of the Proteus syndrome variant, E17K. Mice generated by both methods displayed characteristic types of overgrowth seen in human patients with Proteus syndrome, including vascular malformations, cysts, hyperplasia, and stromal expansion, with the chimeric method appearing to be more successful than the mosaic method. Identification of E17K-positive cells and increased Akt signaling in lesional tissue of chimeric Proteus syndrome mice revealed that the E17K-positive cells likely signaled neighboring E17K-negative cells to proliferate, suggesting that the Proteus syndrome variant drove overgrowth in a non-cell autonomous manner. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=31194862" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<strong>ALLELIC VARIANTS (<a href="/help/faq#1_4"></strong>
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<strong>3 Selected Examples</a>):</strong>
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<a href="/allelicVariants/164730" class="btn btn-default" role="button"> Table View </a>
&nbsp;&nbsp;<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=164730[MIM]" class="btn btn-default mim-tip-hint" role="button" title="ClinVar aggregates information about sequence variation and its relationship to human health." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">ClinVar</a>
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<strong>.0001&nbsp;BREAST CANCER, SOMATIC</strong>
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COLORECTAL CANCER, SOMATIC, INCLUDED<br />
OVARIAN CANCER, SOMATIC, INCLUDED<br />
PROTEUS SYNDROME, SOMATIC, INCLUDED
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AKT1, GLU17LYS
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs121434592 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs121434592;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs121434592?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs121434592" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs121434592" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000015017 OR RCV000015018 OR RCV000015019 OR RCV000031926 OR RCV000795313 OR RCV001813745 OR RCV004668732" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000015017, RCV000015018, RCV000015019, RCV000031926, RCV000795313, RCV001813745, RCV004668732" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000015017...</a>
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<p><a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> identified a 49G-A transition in the AKT1 gene, resulting in a glu17-to-lys (E17K) substitution, in tumor specimens from 5 of 61 (8%) breast cancer (<a href="/entry/114480">114480</a>) samples, 3 of 51 (6%) colorectal cancers (<a href="/entry/114500">114500</a>), and 1 of 50 (2%) ovarian cancers (<a href="/entry/167000">167000</a>). DNA from normal adjacent tissue or white blood cells showed no evidence of this mutation, which occurs in the PHD domain of AKT1. The AKT1 mutation was mutually exclusive with respect to mutations in PIK3CA (<a href="/entry/171834">171834</a>) and complete loss of PTEN (<a href="/entry/601728">601728</a>) protein expression. <a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> showed that this mutation alters the AKT1-PHD conformation, results in activation of AKT1, and alters the subcellular location of AKT1 to the plasma membrane. Furthermore, <a href="#4" class="mim-tip-reference" title="Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others. &lt;strong&gt;A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.&lt;/strong&gt; Nature 448: 439-444, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17611497/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;17611497&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/nature05933&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="17611497">Carpten et al. (2007)</a> found that the AKT1 containing the E17K mutation was able to transform cells in culture and induce leukemia in mice. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=17611497" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#36" class="mim-tip-reference" title="Lindhurst, M. J., Sapp, J. C., Teer, J. K., Johnston, J. J., Finn, E. M., Peters, K., Turner, J., Cannons, J. L., Bick, D., Blakemore, L., Blumhorst, C., Brockmann, K., and 28 others. &lt;strong&gt;A mosaic activating mutation in AKT1 associated with the Proteus syndrome.&lt;/strong&gt; New Eng. J. Med. 365: 611-619, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21793738/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;21793738&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21793738[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1056/NEJMoa1104017&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="21793738">Lindhurst et al. (2011)</a> performed exome sequencing of 11 DNA samples from 6 patients with Proteus syndrome (<a href="/entry/176920">176920</a>), as well as 1 sample each from 5 unaffected parents and from 1 patient's unaffected identical twin sib, and identified an activating E17K mutation in the AKT1 gene in 7 samples from 3 patients. The association was confirmed using a custom restriction-enzyme assay: overall, 26 (90%) of 29 patients with Proteus syndrome who were tested carried the E17K mutation in one or more samples, with the fraction of mutant DNA in the positive specimens ranging from 1% to approximately 50%. Mutant cell lines demonstrated greater AKT phosphorylation than control cell lines, and single-cell clones established from the same starting culture but differing in mutation status had different levels of AKT phosphorylation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21793738" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<strong>.0002&nbsp;COWDEN SYNDROME 6</strong>
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AKT1, ARG25CYS
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown">rs397514644 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs397514644;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs397514644" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs397514644" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
<span class="mim-text-font">
<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000033177" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000033177" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000033177</a>
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<p>In a 38-year-old female with Cowden syndrome (CWS6; <a href="/entry/615109">615109</a>), <a href="#41" class="mim-tip-reference" title="Orloff, M. S., He, X., Peterson, C., Chen, F., Chen, J.-L., Mester, J. L., Eng, C. &lt;strong&gt;Germline PIK3CA and AKT1 mutations in Cowden and Cowden-like syndromes.&lt;/strong&gt; Am. J. Hum. Genet. 92: 76-80, 2013.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23246288/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;23246288&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=23246288[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2012.10.021&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="23246288">Orloff et al. (2013)</a> identified a C-to-T transition at nucleotide 73 in exon 2 of the AKT1 gene, resulting in an arginine-to-cysteine substitution at codon 25 (R25C). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23246288" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<h4>
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<strong>.0003&nbsp;COWDEN SYNDROME 6</strong>
</span>
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AKT1, THR435PRO
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&nbsp;&nbsp;
<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown">rs397514645 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs397514645;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs397514645" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs397514645" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
<span class="mim-text-font">
<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000033178" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000033178" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000033178</a>
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<p>In a 47-year-old female with Cowden syndrome (CWS6; <a href="/entry/615109">615109</a>), <a href="#41" class="mim-tip-reference" title="Orloff, M. S., He, X., Peterson, C., Chen, F., Chen, J.-L., Mester, J. L., Eng, C. &lt;strong&gt;Germline PIK3CA and AKT1 mutations in Cowden and Cowden-like syndromes.&lt;/strong&gt; Am. J. Hum. Genet. 92: 76-80, 2013.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23246288/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;23246288&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=23246288[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2012.10.021&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="23246288">Orloff et al. (2013)</a> identified an A-to-C transversion at nucleotide 1303 in exon 12 of the AKT1 gene, resulting in an threonine-to-proline substitution at codon 435 (T435P). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23246288" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<a id="references"class="mim-anchor"></a>
<h4 href="#mimReferencesFold" id="mimReferencesToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span class="mim-font">
<span id="mimReferencesToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<strong>REFERENCES</strong>
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<div id="mimReferencesFold" class="collapse in mimTextToggleFold">
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<a id="1" class="mim-anchor"></a>
<a id="Ackah2005" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Ackah, E., Yu, J., Zoellner, S., Iwakiri, Y., Skurk, C., Shibata, R., Ouchi, N., Easton, R. M., Galasso, G., Birnbaum, M. J., Walsh, K., Sessa, W. C.
<strong>Akt1/protein kinase B-alpha is critical for ischemic and VEGF-mediated angiogenesis.</strong>
J. Clin. Invest. 115: 2119-2127, 2005.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/16075056/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">16075056</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=16075056[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16075056" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1172/JCI24726" target="_blank">Full Text</a>]
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<a id="2" class="mim-anchor"></a>
<a id="Bellacosa1993" class="mim-anchor"></a>
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<p class="mim-text-font">
Bellacosa, A., Franke, T. F., Gonzalez-Portal, M. E., Datta, K., Taguchi, T., Gardner, J., Cheng, J. Q., Testa, J. R., Tsichlis, P. N.
<strong>Structure, expression and chromosomal mapping of c-akt: relationship to v-akt and its implications.</strong>
Oncogene 8: 745-754, 1993.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/8437858/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">8437858</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=8437858" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
</p>
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<a id="Brunet1999" class="mim-anchor"></a>
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<p class="mim-text-font">
Brunet, A., Bonni, A., Zigmond, M. J., Lin, M. Z., Juo, P., Hu, L. S., Anderson, M. J., Arden, K. C., Blenis, J., Greenberg, M. E.
<strong>Akt promotes cell survival by phosphorylating and inhibiting a Forkhead transcription factor.</strong>
Cell 96: 857-868, 1999.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/10102273/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">10102273</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10102273" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1016/s0092-8674(00)80595-4" target="_blank">Full Text</a>]
</p>
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<a id="Carpten2007" class="mim-anchor"></a>
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<p class="mim-text-font">
Carpten, J. D., Faber, A. L., Horn, C., Donoho, G. P., Briggs, S. L., Robbins, C. M., Hostetter, G., Boguslawski, S., Moses, T. Y., Savage, S., Uhlik, M., Lin, A., and 12 others.
<strong>A transforming mutation in the pleckstrin homology domain of AKT1 in cancer.</strong>
Nature 448: 439-444, 2007.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/17611497/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">17611497</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=17611497" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/nature05933" target="_blank">Full Text</a>]
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<a id="Cha2005" class="mim-anchor"></a>
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<p class="mim-text-font">
Cha, T.-L., Zhou, B. P., Xia, W., Wu, Y., Yang, C.-C., Chen, C.-T., Ping, B., Otte, A. P., Hung, M.-C.
<strong>Akt-mediated phosphorylation of EZH2 suppresses methylation of lysine 27 in histone H3.</strong>
Science 310: 306-310, 2005.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/16224021/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">16224021</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16224021" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.1118947" target="_blank">Full Text</a>]
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<a id="Chen2005" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Chen, J., Somanath, P. R., Razorenova, O., Chen, W. S., Hay, N., Bornstein, P., Byzova, T. V.
<strong>Akt1 regulates pathological angiogenesis, vascular maturation and permeability in vivo.</strong>
Nature Med. 11: 1188-1196, 2005.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/16227992/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">16227992</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=16227992[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16227992" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/nm1307" target="_blank">Full Text</a>]
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<a id="Chen2006" class="mim-anchor"></a>
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Chen, M.-L., Xu, P.-Z., Peng, X., Chen, W. S., Guzman, G., Yang, X., Di Cristofano, A., Pandolfi, P. P., Hay, N.
<strong>The deficiency of Akt1 is sufficient to suppress tumor development in Pten+/- mice.</strong>
Genes Dev. 20: 1569-1574, 2006.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/16778075/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">16778075</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=16778075[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16778075" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1101/gad.1395006" target="_blank">Full Text</a>]
</p>
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<a id="8" class="mim-anchor"></a>
<a id="Chen2001" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Chen, W. S., Xu, P.-Z., Gottlob, K., Chen, M.-L., Sokol, K., Shiyanova, T., Roninson, I., Weng, W., Suzuki, R., Tobe, K., Kadowaki, T., Hay, N.
<strong>Growth retardation and increased apoptosis in mice with homozygous disruption of the akt1 gene.</strong>
Genes Dev. 15: 2203-2208, 2001.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/11544177/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">11544177</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=11544177[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11544177" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1101/gad.913901" target="_blank">Full Text</a>]
</p>
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<a id="9" class="mim-anchor"></a>
<a id="Condorelli2002" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Condorelli, G., Drusco, A., Stassi, G., Bellacosa, A., Roncarati, R., Iaccarino, G., Russo, M. A., Gu, Y., Dalton, N., Chung, C., Latronico, M. V. G., Napoli, C., Sadoshima, J., Croce, C. M., Ross, J., Jr.
<strong>Akt induces enhanced myocardial contractility and cell size in vivo in transgenic mice.</strong>
Proc. Nat. Acad. Sci. 99: 12333-12338, 2002.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12237475/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12237475</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=12237475[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12237475" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1073/pnas.172376399" target="_blank">Full Text</a>]
</p>
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<li>
<a id="10" class="mim-anchor"></a>
<a id="Dahia1999" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Dahia, P. L. M., Aguiar, R. C. T., Alberta, J., Kum, J. B., Caron, S., Sill, H., Marsh, D. J., Ritz, J., Freedman, A., Stiles, C., Eng, C.
<strong>PTEN is inversely correlated with the cell survival factor Akt/PKB and is inactivated via multiple mechanisms in haematological malignancies.</strong>
Hum. Molec. Genet. 8: 185-193, 1999.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/9931326/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">9931326</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=9931326" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1093/hmg/8.2.185" target="_blank">Full Text</a>]
</p>
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<a id="11" class="mim-anchor"></a>
<a id="Dimmeler1999" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Dimmeler, S., Fleming, I., Fisslthaler, B., Hermann, C., Busse, R., Zeiher, A. M.
<strong>Activation of nitric oxide synthase in endothelial cells by Akt-dependent phosphorylation.</strong>
Nature 399: 601-605, 1999.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/10376603/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">10376603</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10376603" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/21224" target="_blank">Full Text</a>]
</p>
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<a id="12" class="mim-anchor"></a>
<a id="Dudek1997" class="mim-anchor"></a>
<div class="">
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Dudek, H., Datta, S. R., Franke, T. F., Birnbaum, M. J., Yao, R., Cooper, G. M., Segal, R. A., Kaplan, D. R., Greenberg, M. E.
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[<a href="https://doi.org/10.1016/s1097-2765(01)00324-0" target="_blank">Full Text</a>]
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<strong>Identification of a tumour suppressor network opposing nuclear Akt function.</strong>
Nature 441: 523-536, 2006.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/16680151/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">16680151</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=16680151[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=16680151" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/nature04809" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="55" class="mim-anchor"></a>
<a id="Vanhaesebroeck2000" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Vanhaesebroeck, B., Alessi, D. R.
<strong>The PI3K-PDK1 connection: more than just a road to PKB.</strong>
Biochem. J. 346: 561-576, 2000.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/10698680/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">10698680</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10698680" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
</p>
</div>
</li>
<li>
<a id="56" class="mim-anchor"></a>
<a id="Vasko2004" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Vasko, V., Saji, M., Hardy, E., Kruhlak, M., Larin, A., Savchenko, V., Miyakawa, M., Isozaki, O., Murakami, H., Tsushima, T., Burman, K. D., De Micco, C., Ringel, M. D.
<strong>Akt activation and localisation correlate with tumour invasion and oncogene expression in thyroid cancer.</strong>
J. Med. Genet. 41: 161-170, 2004.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/14985374/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">14985374</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=14985374" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1136/jmg.2003.015339" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="57" class="mim-anchor"></a>
<a id="Viglietto2002" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Viglietto, G., Motti, M. L., Bruni, P., Melillo, R. M., D'Alessio, A., Califano, D., Vinci, F., Chiappetta, G., Tsichlis, P., Bellacosa, A., Fusco, A., Santoro, M.
<strong>Cytoplasmic relocalization and inhibition of the cyclin-dependent kinase inhibitor p27(Kip1) by PKB/Akt-mediated phosphorylation in breast cancer.</strong>
Nature Med. 8: 1136-1144, 2002.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244303/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244303</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244303" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/nm762" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="58" class="mim-anchor"></a>
<a id="Virtanen2009" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Virtanen, C., Paris, J., Takahashi, M.
<strong>Identification and characterization of a novel gene, dapr, involved in skeletal muscle differentiation and protein kinase B signaling.</strong>
J. Biol. Chem. 284: 1636-1643, 2009.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/19028694/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">19028694</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=19028694" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1074/jbc.M807000200" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="59" class="mim-anchor"></a>
<a id="Wang2012" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Wang, R. C., Wei, Y., An, Z., Zou, Z., Xiao, G., Bhagat, G., White, M., Reichelt, J., Levine, B.
<strong>Akt-mediated regulation of autophagy and tumorigenesis through beclin 1 phosphorylation.</strong>
Science 338: 956-959, 2012.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/23112296/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">23112296</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=23112296[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23112296" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.1225967" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="60" class="mim-anchor"></a>
<a id="Wendel2004" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Wendel, H.-G., de Stanchina, E., Fridman, J. S., Malina, A., Ray, S., Kogan, S., Cordon-Cardo, C., Pelletier, J., Lowe, S. W.
<strong>Survival signalling by Akt and eIF4E in oncogenesis and cancer therapy.</strong>
Nature 428: 332-337, 2004.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/15029198/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">15029198</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15029198" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/nature02369" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="61" class="mim-anchor"></a>
<a id="Weng2001" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Weng, L.-P., Brown, J. L., Eng, C.
<strong>PTEN induces apoptosis and cell cycle arrest through phosphoinositol-3-kinase/Akt-dependent and -independent pathways.</strong>
Hum. Molec. Genet. 10: 237-242, 2001.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/11159942/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">11159942</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11159942" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1093/hmg/10.3.237" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="62" class="mim-anchor"></a>
<a id="Xu2020" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Xu, D., Wang, Z., Xia, Y., Shao, F., Xia, W., Wei, Y., Li, X., Qian, X., Lee, J.-H., Du, L., Zheng, Y., Lv, G., Leu, J., Wang, H., Xing, D., Liang, T., Hung, M.-C., Lu, Z.
<strong>The gluconeogenic enzyme PCK1 phosphorylates INSIG1/2 for lipogenesis.</strong>
Nature 580: 530-535, 2020.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/32322062/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">32322062</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=32322062" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/s41586-020-2183-2" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="63" class="mim-anchor"></a>
<a id="Yang2002" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Yang, J., Cron, P., Thompson, V., Good, V. M., Hess, D., Hemmings, B. A., Barford, D.
<strong>Molecular mechanism for the regulation of protein kinase B/Akt by hydrophobic motif phosphorylation.</strong>
Molec. Cell 9: 1227-1240, 2002.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12086620/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12086620</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12086620" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1016/s1097-2765(02)00550-6" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="64" class="mim-anchor"></a>
<a id="Yang2009" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Yang, W.-L., Wang, J., Chan, C.-H., Lee, S.-W., Campos, A. D., Lamothe, B., Hur, L., Grabiner, B. C., Lin, X., Darnay, B. G., Lin, H.-K.
<strong>The E3 ligase TRAF6 regulates Akt ubiquitination and activation.</strong>
Science 325: 1134-1138, 2009.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/19713527/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">19713527</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=19713527[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=19713527" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.1175065" target="_blank">Full Text</a>]
</p>
</div>
</li>
</ol>
<div>
<br />
</div>
</div>
</div>
<div>
<a id="contributors" class="mim-anchor"></a>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="mim-text-font">
<a href="#mimCollapseContributors" role="button" data-toggle="collapse"> Contributors: </a>
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Bao Lige - updated : 09/02/2021
</span>
</div>
</div>
<div class="row collapse" id="mimCollapseContributors">
<div class="col-lg-offset-2 col-md-offset-4 col-sm-offset-4 col-xs-offset-2 col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Elizabeth S. Partan - updated : 02/16/2021<br>Ada Hamosh - updated : 09/21/2020<br>Ada Hamosh - updated : 09/27/2016<br>Paul J. Converse - updated : 09/14/2016<br>Paul J. Converse - updated : 7/17/2015<br>Ada Hamosh - updated : 5/30/2014<br>Ada Hamosh - updated : 3/1/2013<br>Ada Hamosh - updated : 1/7/2013<br>Marla J. F. O'Neill - updated : 8/1/2011<br>Ada Hamosh - updated : 9/15/2009<br>Matthew B. Gross - updated : 5/7/2009<br>Ada Hamosh - updated : 1/22/2008<br>Ada Hamosh - updated : 8/20/2007<br>Cassandra L. Kniffin - updated : 1/4/2007<br>Ada Hamosh - updated : 7/24/2006<br>Patricia A. Hartz - updated : 7/17/2006<br>Ada Hamosh - updated : 2/10/2006<br>Marla J. F. O'Neill - updated : 2/3/2006<br>Cassandra L. Kniffin - updated : 11/11/2005<br>Ada Hamosh - updated : 10/25/2005<br>Cassandra L. Kniffin - updated : 10/7/2005<br>Patricia A. Hartz - updated : 9/28/2005<br>Patricia A. Hartz - updated : 9/8/2005<br>Paul J. Converse - updated : 5/13/2004<br>Stylianos E. Antonarakis - updated : 4/30/2004<br>Ada Hamosh - updated : 4/7/2004<br>Patricia A. Hartz - updated : 2/17/2004<br>Victor A. McKusick - updated : 1/23/2004<br>Ada Hamosh - updated : 8/26/2003<br>Patricia A. Hartz - updated : 7/8/2003<br>Ada Hamosh - updated : 11/18/2002<br>Patricia A. Hartz - updated : 11/7/2002<br>Victor A. McKusick - updated : 10/21/2002<br>Stylianos E. Antonarakis - updated : 9/18/2002<br>Patricia A. Hartz - reorganized : 8/20/2002<br>Patricia A. Hartz - updated : 8/20/2002<br>Stylianos E. Antonarakis - updated : 11/6/2001<br>George E. Tiller - updated : 4/18/2001<br>Ada Hamosh - updated : 4/28/2000<br>Paul J. Converse - updated : 3/7/2000<br>Ada Hamosh - updated : 6/23/1999<br>Ada Hamosh - updated : 4/8/1999<br>Stylianos E. Antonarakis - updated : 4/1/1999
</span>
</div>
</div>
</div>
<div>
<a id="creationDate" class="mim-anchor"></a>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="text-nowrap mim-text-font">
Creation Date:
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Victor A. McKusick : 6/2/1986
</span>
</div>
</div>
</div>
<div>
<a id="editHistory" class="mim-anchor"></a>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="text-nowrap mim-text-font">
<a href="#mimCollapseEditHistory" role="button" data-toggle="collapse"> Edit History: </a>
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
carol : 06/07/2024
</span>
</div>
</div>
<div class="row collapse" id="mimCollapseEditHistory">
<div class="col-lg-offset-2 col-md-offset-2 col-sm-offset-4 col-xs-offset-4 col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
carol : 06/06/2024<br>mgross : 09/02/2021<br>mgross : 02/16/2021<br>alopez : 09/21/2020<br>carol : 11/21/2019<br>alopez : 09/27/2016<br>mgross : 09/14/2016<br>mgross : 07/24/2015<br>mgross : 7/24/2015<br>mcolton : 7/17/2015<br>alopez : 10/23/2014<br>alopez : 10/10/2014<br>alopez : 5/30/2014<br>carol : 4/4/2013<br>alopez : 3/1/2013<br>mgross : 2/5/2013<br>alopez : 1/7/2013<br>terry : 1/7/2013<br>terry : 1/7/2013<br>terry : 7/27/2012<br>carol : 9/1/2011<br>terry : 8/10/2011<br>carol : 8/1/2011<br>carol : 9/15/2009<br>alopez : 9/15/2009<br>terry : 9/15/2009<br>wwang : 5/11/2009<br>mgross : 5/7/2009<br>ckniffin : 1/30/2009<br>mgross : 12/10/2008<br>alopez : 1/23/2008<br>terry : 1/22/2008<br>alopez : 8/31/2007<br>carol : 8/21/2007<br>terry : 8/20/2007<br>carol : 8/20/2007<br>wwang : 1/26/2007<br>ckniffin : 1/4/2007<br>alopez : 9/19/2006<br>alopez : 7/27/2006<br>terry : 7/24/2006<br>mgross : 7/19/2006<br>terry : 7/17/2006<br>carol : 3/10/2006<br>alopez : 2/21/2006<br>terry : 2/10/2006<br>wwang : 2/3/2006<br>wwang : 2/1/2006<br>ckniffin : 11/11/2005<br>alopez : 10/26/2005<br>terry : 10/25/2005<br>carol : 10/11/2005<br>ckniffin : 10/7/2005<br>mgross : 10/7/2005<br>mgross : 10/6/2005<br>terry : 9/28/2005<br>mgross : 9/8/2005<br>terry : 3/16/2005<br>mgross : 9/23/2004<br>alopez : 6/9/2004<br>mgross : 5/13/2004<br>carol : 5/12/2004<br>mgross : 4/30/2004<br>alopez : 4/8/2004<br>alopez : 4/8/2004<br>terry : 4/7/2004<br>cwells : 2/23/2004<br>terry : 2/17/2004<br>alopez : 1/29/2004<br>terry : 1/23/2004<br>alopez : 9/2/2003<br>alopez : 8/26/2003<br>terry : 8/26/2003<br>mgross : 7/8/2003<br>cwells : 11/19/2002<br>terry : 11/18/2002<br>tkritzer : 11/14/2002<br>tkritzer : 11/7/2002<br>tkritzer : 11/7/2002<br>carol : 10/24/2002<br>tkritzer : 10/21/2002<br>tkritzer : 10/21/2002<br>mgross : 9/18/2002<br>mgross : 8/20/2002<br>mgross : 8/20/2002<br>mgross : 8/20/2002<br>mgross : 11/6/2001<br>mgross : 11/6/2001<br>cwells : 5/3/2001<br>cwells : 4/26/2001<br>cwells : 4/20/2001<br>cwells : 4/18/2001<br>alopez : 10/20/2000<br>alopez : 5/1/2000<br>terry : 4/28/2000<br>carol : 3/7/2000<br>alopez : 3/3/2000<br>alopez : 6/23/1999<br>alopez : 6/23/1999<br>alopez : 4/9/1999<br>alopez : 4/8/1999<br>mgross : 4/1/1999<br>psherman : 3/18/1999<br>mark : 1/30/1997<br>terry : 1/29/1997<br>mark : 5/9/1996<br>terry : 7/10/1995<br>mark : 6/19/1995<br>carol : 11/12/1993<br>carol : 5/7/1993<br>carol : 4/27/1993<br>carol : 11/6/1992
</span>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="container visible-print-block">
<div class="row">
<div class="col-md-8 col-md-offset-1">
<div>
<div>
<h3>
<span class="mim-font">
<strong>*</strong> 164730
</span>
</h3>
</div>
<div>
<h3>
<span class="mim-font">
AKT SERINE/THREONINE KINASE 1; AKT1
</span>
</h3>
</div>
<div>
<br />
</div>
<div>
<div >
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
</div>
<div>
<h4>
<span class="mim-font">
V-AKT MURINE THYMOMA VIRAL ONCOGENE HOMOLOG 1<br />
ONCOGENE AKT1<br />
PROTEIN KINASE B-ALPHA<br />
PKB-ALPHA<br />
RAC SERINE/THREONINE PROTEIN KINASE
</span>
</h4>
</div>
</div>
<div>
<br />
</div>
</div>
<div>
<p>
<span class="mim-text-font">
<strong><em>HGNC Approved Gene Symbol: AKT1</em></strong>
</span>
</p>
</div>
<div>
<p>
<span class="mim-text-font">
<strong>
<em>
Cytogenetic location: 14q32.33
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : 14:104,769,349-104,795,748 </span>
</em>
</strong>
<span class="small">(from NCBI)</span>
</span>
</p>
</div>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Gene-Phenotype Relationships</strong>
</span>
</h4>
<div>
<table class="table table-bordered table-condensed small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan="5">
<span class="mim-font">
14q32.33
</span>
</td>
<td>
<span class="mim-font">
Breast cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
114480
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Colorectal cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
114500
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Cowden syndrome 6
</span>
</td>
<td>
<span class="mim-font">
615109
</span>
</td>
<td>
<span class="mim-font">
Autosomal dominant
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Ovarian cancer, somatic
</span>
</td>
<td>
<span class="mim-font">
167000
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Proteus syndrome, somatic
</span>
</td>
<td>
<span class="mim-font">
176920
</span>
</td>
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3
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<strong>TEXT</strong>
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<strong>Description</strong>
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<p>Phosphoinositide 3-kinases, or PI3Ks (see PIK3CA; 171834), generate specific inositol lipids implicated in the regulation of cell growth, proliferation, survival, differentiation, and cytoskeletal changes. One of the best characterized targets of PI3K lipid products is the protein kinase AKT, or protein kinase B (PKB). In quiescent cells, PKB resides in the cytosol in a low-activity conformation. Upon cellular stimulation, PKB is activated through recruitment to cellular membranes by PI3K lipid products and by phosphorylation by 3-prime phosphoinositide-dependent kinase-1 (PDPK1; 605213). For a review of the mechanism that activates PKB and the downstream actions of this multifunctional kinase, see Vanhaesebroeck and Alessi (2000). For a review of the possible role of PKB in glucose transport, see Hajduch et al. (2001). </p>
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<strong>Cloning and Expression</strong>
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<p>The AKT oncogene was isolated from the directly transforming murine retrovirus AKT8, which was isolated from an AKR mouse thymoma cell line. Staal (1987) cloned the human cellular homolog, AKT1. They found a 20-fold amplification of the AKT1 gene in 1 of 5 gastric adenocarcinomas tested. </p><p>Protein phosphorylation is a fundamental process for the regulation of cellular functions. The coordinated action of both protein kinases and phosphatases controls the levels of phosphorylation and, hence, the activity of specific target proteins. One of the predominant roles of protein phosphorylation is in signal transduction, where extracellular signals are amplified and propagated by a cascade of protein phosphorylation and dephosphorylation events. Two of the best characterized signal transduction pathways involve the cAMP-dependent protein kinase (188830) and protein kinase C (PKC; 176960). Each pathway uses a different second-messenger molecule to activate the protein kinase, which, in turn, phosphorylates specific target molecules. Extensive comparisons of kinase sequences defined a common catalytic domain, ranging from 250 to 300 amino acids. This domain contains key amino acids conserved between kinases and are thought to play an essential role in catalysis. Jones et al. (1991) isolated a partial cDNA that encodes a protein kinase they termed rac (related to the A and C kinases). DNA sequencing identified an open reading frame of 1,440 bp encoding a protein of 480 amino acids. In an in vitro translation system that used RNA transcribed from cloned cDNAs, they demonstrated the synthesis of a protein of corresponding size. The predicted protein contains consensus sequences characteristic of a protein kinase catalytic domain and shows 73% and 68% similarity to protein kinase C and cAMP-dependent protein kinase, respectively. </p>
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<strong>Gene Function</strong>
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<p>The serine-threonine protein kinase encoded by the AKT1 gene is catalytically inactive in serum-starved primary and immortalized fibroblasts. Franke et al. (1995) showed that AKT1 and the related AKT2 (164731) are activated by platelet-derived growth factor (PDGF; 190040). The activation is rapid and specific, and is abrogated by mutations in the pleckstrin homology domain of AKT1. Other experiments showed that the activation also depends on PDGFRB (173410) tyrosines 740 and 751, which bind PIK3 upon phosphorylation. </p><p>Dudek et al. (1997) demonstrated that AKT is important for the survival of cerebellar neurons. Thus, the 'orphan' kinase moved center stage as a crucial regulator of life and death decisions emanating from the cell membrane (Hemmings, 1997). The work of Dudek et al. (1997) delineated a signaling pathway by which insulin-like growth factor-1 (IGF1; 147440) promotes the survival of cerebellar neurons. IGF1 activation of PIK3 triggered the activation of 2 protein kinases, AKT and the p70 ribosomal protein S6 kinase (p70-RPS6K). Experiments with pharmacologic inhibitors, as well as expression of wildtype and dominant-inhibitory forms of AKT, demonstrated that AKT but not p70-RPS6K mediates PIK3-dependent survival. The findings suggested that in the developing nervous system AKT is a critical mediator of growth factor-induced neuronal survival. Franke et al. (1997) defined the specific mechanisms by which lipid products of PIK3 regulate AKT. </p><p>Ozes et al. (1999) showed that AKT1 is involved in the activation of NFKB1 (164011) by TNF (191160), following the activation of PIK3. Constitutively active AKT1 induces NFKB1 activity, mediated by phosphorylation of IKBKA (600664) at threonine 23, which can be blocked by activated NIK (604655). Conversely, NIK activation of NFKB, mediated by phosphorylation of IKBKA at serine 176, is blocked by an AKT1 mutant lacking kinase activity (i.e., kinase dead AKT), indicating that both AKT1 and NIK are necessary for TNF activation of NFKB1 through the phosphorylation of IKBKA. IKBKB (IKKB; 603258) is not phosphorylated by either NIK or AKT1 and is apparently differentially regulated. </p><p>Most proliferating cells are programmed to undergo apoptosis unless specific survival signals are provided. PDGF promotes cellular proliferation and inhibits apoptosis. Romashkova and Makarov (1999) showed that PDGF activates the RAS/PIK3/AKT1/IKBKA/NFKB1 pathway. In this pathway, NFKB1 does not induce c-myc and apoptosis, but instead induces putative antiapoptotic genes. In response to PDGF, AKT1 transiently associates with IKBK and induces IKBK activation. The authors suggested that under certain conditions PIK3 may activate NFKB1 without the involvement of IKBA (164008) or IKBB (604495) degradation. </p><p>Survival factors can suppress apoptosis in a transcription-independent manner by activating the serine/threonine kinase AKT1, which then phosphorylates and inactivates components of the apoptotic machinery, including BAD (603167) and caspase-9 (602234). Brunet et al. (1999) demonstrated that AKT1 also regulates the activity of FKHRL1 (FOXO3A; 602681), a member of the forkhead family of transcription factors. In the presence of survival factors, AKT1 phosphorylates FKHRL1, leading to the association of FKHRL1 with 14-3-3 proteins (see YWHAH, 113508) and its retention in the cytoplasm. Survival factor withdrawal leads to FKHRL1 dephosphorylation, nuclear translocation, and target gene activation. Within the nucleus, FKHRL1 most likely triggers apoptosis by inducing the expression of genes that are critical for cell death, such as the TNFSF6 gene (134638). </p><p>Using in vitro pull-down assays, Powell et al. (2002) showed that recombinant 14-3-3-zeta (601288) interacted directly with both recombinant and endogenous PKB within embryonic kidney cell lysates. They found that recombinant PKB phosphorylated 14-3-3-zeta in an in vitro kinase assay, and transfection of active PKB into embryonic kidney cells resulted in phosphorylation of 14-3-3-zeta. By mutation analysis, Powell et al. (2002) determined that the phosphate acceptor was serine-58. They also showed that phosphorylation did not result in 14-3-3-zeta dimerization. </p><p>Fulton et al. (1999) demonstrated that AKT directly phosphorylated eNOS (NOS3; 163729) and activated the enzyme leading to nitric oxide (NO) production, whereas eNOS mutated at a putative AKT phosphorylation site was resistant to phosphorylation and activation by AKT. Activated AKT increased basal nitric oxide release from endothelial cells, and activation-deficient AKT attenuated NO production stimulated by VEGF (192240). Thus, Fulton et al. (1999) concluded the eNOS is an AKT substrate linking signal transduction by AKT to the release of the gaseous second messenger nitric oxide. Dimmeler et al. (1999) demonstrated that AKT mediates the activation of eNOS, leading to increased nitric oxide production. Inhibition of the PIK3 AKT pathway or mutation of the AKT site on eNOS protein at serine-1177 attenuated the serine phosphorylation and prevented the activation of eNOS. Mimicking the phosphorylation of ser1177 directly enhanced enzyme activity and altered the sensitivity of the enzyme to calcium, rendering its activity maximal at subphysiologic concentrations of calcium. Thus, phosphorylation of eNOS by AKT represented a novel calcium-independent regulatory mechanism for activation of eNOS. </p><p>Lee et al. (2001) showed that sphingosine 1-phosphate (S1P)-induced endothelial cell migration requires the AKT-mediated phosphorylation of the G protein-coupled receptor (GPCR) EDG1 (601974). Activated AKT binds to EDG1 and phosphorylates the third intracellular loop at the thr236 residue. Transactivation of EDG1 by AKT is not required for Gi-dependent signaling but is indispensable for RAC activation, cortical actin assembly, and chemotaxis. Indeed, a thr236-to-ala EDG1 mutant sequestered AKT and acted as a dominant-negative GPCR to inhibit S1P-induced RAC activation, chemotaxis, and angiogenesis. Transactivation of GPCRs by AKT may constitute a specificity switch to integrate rapid G protein-dependent signals into long-term cellular phenomena such as cell migration. </p><p>Furnari et al. (1998) demonstrated that PTEN (601728) can dephosphorylate PIP3, the major product of PIK3. PIP3, in turn, is required for translocation of AKT to the cell membrane, where it is phosphorylated and activated by upstream kinases. </p><p>Dahia et al. (1999) found that PTEN and phosphorylated AKT levels were inversely correlated in a large majority of samples with primary acute leukemias and non-Hodgkin lymphomas as well as in cell lines from these malignancies. </p><p>Weng et al. (2001) demonstrated increased PTEN-mediated cell death of MCF-7 breast cancer cells cultured in low levels of growth factors. The caspase 9-specific inhibitor ZVAD blocked PTEN-induced cell death without altering the effect of PTEN on cell cycle distribution. Overexpression of AKT that contained a dominant-negative acting lys179-to-met mutation induced more cell death but had less effect on the cell cycle than overexpression of PTEN. The authors suggested that the apoptotic MCF-7 cells induced by the overexpression of PTEN were not derived from G1-arrested cells. They further hypothesized that the effect of PTEN on cell death is mediated through the PIK3/AKT pathway, whereas PTEN-mediated cell cycle arrests depend on both PIK3/AKT-dependent and -independent pathways. </p><p>By mutation and immunoprecipitation analyses, Maira et al. (2001) established that CTMP (606388) forms a complex with the C-terminal regulatory domain of PKB, but not with full-length PKB. Functional and Western blot analyses showed that CTMP inhibits the phosphorylation of PKB and in turn inhibits the phosphorylation of glycogen synthase kinase-3-beta (GSK3B; 605004), a PKB-mediated phosphorylation event. Antisense inhibition of CTMP increased the ability of PKB to activate its downstream effectors. Maira et al. (2001) proposed that CTMP negatively regulates PKB by directly binding to it and preventing its phosphorylation, whereas PTEN (601728) inhibits PKB indirectly by reducing the amounts of phosphatidylinositol trisphosphate at the cell membrane. </p><p>Inoki et al. (2002) demonstrated that Akt1 phosphorylates Tsc2 (191092), thereby disrupting interaction between Tsc2 and Tsc1 (605284). Potter et al. (2002) described a similar relationship between Akt and Tsc2 in Drosophila. Inoki et al. (2002) showed that the Tsc1-Tsc2 complex inhibits the mammalian target of rapamycin (MTOR; 601231), leading to inhibition of p70 ribosomal S6 kinase-1 (608938) and activation of eukaryotic translation initiation factor 4E-binding protein-1 (EIF4EBP1; 602223). </p><p>Shin et al. (2002) demonstrated a novel mechanism of AKT-mediated regulation of the CDK inhibitor p27(KIP1) (600778). Blockade of HER2/NEU (164870) in tumor cells inhibited AKT kinase activity and upregulated nuclear levels of p27(KIP1). Recombinant AKT and AKT precipitated from tumor cells phosphorylated wildtype p27 in vitro. P27 contains an AKT consensus RXRXXT(157)D within its nuclear localization motif. Active (myristoylated) AKT phosphorylated wildtype p27 in vivo but was unable to phosphorylate a T157A-p27 mutant. Wildtype p27 localized in the cytosol and nucleus, whereas the mutant p27 localized exclusively in the nucleus and was resistant to nuclear exclusion by AKT. Expression of phosphorylated AKT in primary human breast cancers statistically correlated with the expression of p27 in tumor cytosol. Shin et al. (2002) concluded that AKT may contribute to tumor cell proliferation by phosphorylation and cytosolic retention of p27, thus relieving CDK2 (116953) from p27-induced inhibition. </p><p>Liang et al. (2002) demonstrated that AKT1 phosphorylates p27, impairs the nuclear import of p27, and opposes cytokine-mediated G1 arrest. In cells transfected with constitutively active AKT, wildtype p27 mislocalized to the cytoplasm, but mutant p27 was nuclear. In cells with activated AKT, wildtype p27 failed to cause G1 arrest, while the antiproliferative effect of mutant p27 was not impaired. Cytoplasm p27 was seen in 41% (52 of 128) primary human breast cancers in conjunction with AKT activation and was correlated with a poor patient prognosis. Liang et al. (2002) concluded that their data showed a novel mechanism whereby AKT impairs p27 function that is associated with an aggressive phenotype in human breast cancer. </p><p>Viglietto et al. (2002) independently demonstrated that AKT regulates cell proliferation in breast cancer cells by preventing p27(KIP1)-mediated growth arrest. They also showed that threonine at position 157 is an AKT phosphorylation site and causes retention of p27(KIP1) in the cytoplasm, precluding p27(KIP1)-induced G1 arrest. </p><p>Humbert et al. (2002) found that IGF1 and AKT inhibited mutant huntingtin (613004)-induced cell death and formation of intranuclear inclusions of polyQ huntingtin. AKT phosphorylated ser421 of huntingtin with 23 glutamines, and this phosphorylation reduced mutant huntingtin-induced toxicity in primary cultures of rat striatal neurons. Western blot analysis of cerebellum, cortex, and striatum from Huntington disease patients detected the 60-kD full-length AKT protein and a caspase-3 (CASP3; 600636)-generated 49-kD AKT product. In contrast, normal control brain areas expressed little to no 49-kD AKT. Humbert et al. (2002) concluded that phosphorylation of huntingtin through the IGF1/AKT pathway is neuroprotective, and they hypothesized that the IGF1/AKT pathway may have a role in Huntington disease. </p><p>Vasko et al. (2004) demonstrated Akt involvement in thyroid cancer progression by investigating 46 cancers, 20 follicular adenomas, and adjacent normal tissue by immunohistochemistry for activated Akt (pAkt), Akt1, -2, and -3, and p27 expression. Akt activation was found in 38 cancers (10 of 10 follicular cancers, 26 of 26 papillary cancers, and 2 of 10 follicular variants of papillary cancer) and in only 4 of 66 normal tissue sections and 2 of 10 benign follicular adenomas. Immunoactive pAkt, correlating with Akt1, was expressed most often in areas of capsular invasion and localized to the cytoplasm in papillary cancers, to the nucleus in follicular cancers, and to both compartments in invasive papillary cancers. Nuclear pAkt and Akt1 were associated with cytoplasmic expression of p27, cell invasion, and migration. </p><p>Mangi et al. (2003) genetically engineered rat mesenchymal stem cells using ex vivo retroviral transduction to overexpress Akt1. Transplantation of 5 x 10(6) cells overexpressing Akt into the ischemic rat myocardium inhibited the process of cardiac remodeling by reducing intramyocardial inflammation, collagen deposition, and cardiac myocyte hypertrophy, regenerated 80 to 90% of lost myocardial volume, and completely normalized systolic and diastolic cardiac function. These observed effects were dose (cell number)-dependent. Mesenchymal stem cells transduced with Akt1 restored 4-fold greater myocardial volume than equal numbers of cells transduced with the reporter gene lacZ. Mangi et al. (2003) concluded that mesenchymal stem cells genetically enhanced with Akt1 can repair infarcted myocardium, prevent remodeling, and nearly normalize cardiac performance. </p><p>Using a murine lymphoma model, Wendel et al. (2004) demonstrated that Akt promotes tumorigenesis and drug resistance by disrupting apoptosis, and that disruption of Akt signaling using the mTOR inhibitor rapamycin reverses chemoresistance in lymphomas expressing Akt, but not in those with other apoptotic defects. eIF4E (133440), a translational regulator that acts downstream of Akt and mTOR, recapitulated Akt's action in tumorigenesis and drug resistance but was unable to confer sensitivity to rapamycin and chemotherapy. Wendel et al. (2004) concluded that their results established Akt signaling through mTOR and eIF4E as an important mechanism of oncogenesis and drug resistance in vivo and revealed how targeting apoptotic programs can restore drug sensitivity in a genotype-dependent manner. </p><p>Hu et al. (2004) investigated the pathologic relationship between phosphorylated AKT, or AKT-p, and FOXO3A (602681) in primary tumors. FOXO3A was excluded from the nuclei of some tumors lacking AKT-p, suggesting an AKT-independent mechanism of regulating FOXO3A localization. Hu et al. (2004) provided evidence for such a mechanism by showing that IKK (see IKKB, 603258) physically interacted with, phosphorylated, and inhibited FOXO3A independent of AKT and caused proteolysis of FOXO3A via the ubiquitin (see 191339)-dependent proteasome pathway. Cytoplasmic FOXO3A correlated with expression of IKKB or AKT-p in many tumors and was associated with poor survival in breast cancer. Constitutive expression of IKKB promoted cell proliferation and tumorigenesis that could be overridden by FOXO3A. These results suggested that the negative regulation of FOXO factors by IKK is a key mechanism for promoting cell growth and tumorigenesis. </p><p>Song et al. (2004) showed that OX40 (600315) engagement sustains activation of PKB and intermediates of PKB signaling pathways, including PI3K, GSK3, and FKHR (FOXO1A; 136533). T cells from mice lacking Ox40 were unable to maintain PKB activity over time, and this loss of activity coincided with cell death. Expression of active PKB in responding Ox40 -/- cells reversed the survival defect. Song et al. (2004) concluded that the duration of signaling needed for long-term survival is much longer than that needed for proliferation. </p><p>Cha et al. (2005) showed that AKT phosphorylates EZH2 (601573) at serine-21 and suppresses its methyltransferase activity by impeding EZH2 binding to histone H3 (see 602810), which results in a decrease of lysine-27 trimethylation and derepression of silenced genes. Cha et al. (2005) concluded that their results imply that AKT regulates the methylation activity, through phosphorylation of EZH2, which may contribute to oncogenesis. </p><p>Akt/PKB activation requires the phosphorylation of serine-473. Sarbassov et al. (2005) showed that in Drosophila and in human cells TOR and its associated protein rictor (609022) are necessary for serine-473 phosphorylation, and that a reduction in rictor or mTOR expression inhibited an AKT/PKB effector. The rictor-mTOR complex directly phosphorylated Akt/PKB on serine-473 in vitro and facilitated threonine-308 phosphorylation by PDK1. </p><p>Trotman et al. (2006) demonstrated that the PML (102578) tumor suppressor prevents cancer by inactivating phosphorylated AKT inside the nucleus. They found in a mouse model that Pml loss markedly accelerated tumor onset, incidence, and progression in Pten (601728) heterozygous mutants, and led to female sterility with features that recapitulate the phenotype of Foxo3a knockout mice. Trotman et al. (2006) showed that PML deficiency on its own leads to tumorigenesis in the prostate, a tissue that is exquisitely sensitive to phosphorylated AKT levels, and demonstrated that PML specifically recruits the AKT phosphatase PP2a (see 603113) as well phosphorylated AKT into PML nuclear bodies. Notably, Trotman et al. (2006) found that PML-null cells are impaired in PP2a phosphatase activity towards AKT, and thus accumulate nuclear phosphorylated AKT. As a consequence, the progressive reduction in PML dose leads to inactivation of FOXO3A-mediated transcription of proapoptotic BIM (603827) and the cell cycle inhibitor p27(KIP1) (600778). Trotman et al. (2006) concluded that their results demonstrate that PML orchestrates a nuclear tumor suppressor network for inactivation of nuclear phosphorylated AKT, and thus highlight the importance of AKT compartmentalization in human cancer pathogenesis and treatment. </p><p>The TORC2 protein complex consists of RICTOR and MTOR (FRAP1; 601231) and is a putative kinase for AKT. Jacinto et al. (2006) identified SIN1 (MAPKAP1; 610558) as an essential subunit of the TORC2 complex in human cells. Phosphorylation of Akt at ser473 was lost in Sin1 -/- mouse embryonic fibroblasts (MEFs), whereas phosphorylation of thr308 was unaffected. Defective ser473 phosphorylation affected only a subset of Akt targets in vivo, including Foxo1 and Foxo3a. Sin1 -/- MEFs were more sensitive to stress-induced apoptosis, suggesting that phosphorylation of AKT at ser473 plays an important role in cell survival. </p><p>Kuijl et al. (2007) developed kinase inhibitors that prevent intracellular growth of unrelated pathogens such as Salmonella typhimurium and Mycobacterium tuberculosis. An RNA interference screen of the human kinome using automated microscopy revealed several host kinases capable of inhibiting intracellular growth of S. typhimurium. The kinases identified clustered in 1 network around AKT1. Inhibitors of AKT1 prevent intracellular growth of various bacteria including MDR-M. tuberculosis. AKT1 is activated by the S. typhimurium effector SopB, which promotes intracellular survival by controlling actin dynamics through PAK4 (605451), and phagosome-lysosome fusion through the AS160 (612465)-RAB14 pathway. AKT1 inhibitors counteract the bacterial manipulation of host signaling processes, thus controlling intracellular growth of bacteria. By using a reciprocal chemical genetics approach, Kuijl et al. (2007) identified kinase inhibitors with antibiotic properties and their host targets, and determined host signaling networks that are activated by intracellular bacteria for survival. </p><p>Yang et al. (2009) found that the protein kinase Akt undergoes lysine-63 chain ubiquitination, which is important for Akt membrane localization and phosphorylation. TRAF6 (602355) was found to be a direct E3 ligase for Akt and was essential for Akt ubiquitination, membrane recruitment, and phosphorylation upon growth factor stimulation. The human cancer-associated Akt mutant (164730.0001) displayed an increase in Akt ubiquitination, in turn contributing to the enhancement of Akt membrane localization and phosphorylation. Thus, Yang et al. (2009) concluded that Akt ubiquitination is an important step for oncogenic Akt activation. </p><p>Virtanen et al. (2009) found that Plekhm3 (619186) bound endogenous PKB in C2C12 mouse myoblasts, and immunoprecipitation experiments in transfected HeLa cells confirmed the interaction. PKB phosphorylation was not dependent on differentiation status or Plekhm3 expression. Ultracentrifugation experiments in C2C12 cells showed that Plekhm3 and PKB were found in cytoplasm before differentiation, but in both cytoplasm and membrane fractions after differentiation, and that introduction of PKB induced Plekhm3 to move to the membrane. Knockdown of Plekhm3 in C2C12 cells resulted in loss of PKB in the membrane fraction. Knockdown of Plekhm3 also reduced myotube formation and delayed S-actin (see 102610) expression in differentiating myoblasts. The authors proposed that Plekhm3 may function as a scaffold protein for PKB. </p><p>Wang et al. (2012) showed that beclin-1 (604378), an essential autophagy and tumor suppressor protein, is a target of the protein kinase AKT. Expression of a beclin-1 mutant resistant to Akt-mediated phosphorylation increased autophagy, reduced anchorage-independent growth, and inhibited Akt-driven tumorigenesis. Akt-mediated phosphorylation of beclin-1 enhanced its interactions with 14-3-3 (see 605066) and vimentin (193060) intermediate filament proteins, and vimentin depletion increased autophagy and inhibited Akt-driven transformation. Thus, Wang et al. (2012) concluded that Akt-mediated phosphorylation of beclin-1 functions in autophagy inhibition, oncogenesis, and the formation of an autophagy-inhibitory beclin-1/14-3-3/vimentin intermediate filament complex, and suggested their findings have broad implications for understanding the role of Akt signaling and intermediate filament proteins in autophagy and cancer. </p><p>Liu et al. (2014) reported that AKT activity fluctuates across the cell cycle, mirroring cyclin A2 (CCNA2; 123835) expression. Mechanistically, phosphorylation of S477 and T479 at the Akt extreme carboxy terminus by cyclin-dependent kinase-2 (CDK2; 116953)/CCNA2 or mTORC2 (see 601231), under distinct physiologic conditions, promoted Akt activation through facilitating, or functionally compensating for, S473 phosphorylation. Furthermore, deletion of both Ccna2 alleles in the mouse olfactory bulb led to reduced S477/T479 phosphorylation and elevated cellular apoptosis. Notably, Ccna2 deletion-induced cellular apoptosis in mouse embryonic stem cells was partly rescued by S477D/T479E-Akt1, supporting a physiologic role for Ccna2 in governing Akt activation. Liu et al. (2014) concluded that, taken together, the results of their study showed AKT S477/T479 phosphorylation to be an essential layer of the AKT activation mechanism to regulate its physiologic functions, thereby providing a mechanistic link between aberrant cell cycle progression and AKT hyperactivation in cancer. </p><p>Kshirsagar et al. (2014) reported that enhanced STAT3 (102582) activity in CD4 (186940)-positive/CD45A (see 151460)-negative/FOXP3 (300292)-negative and FOXP3-low effector T cells from children with lupus nephritis (LN; see 152700) correlated with increased frequency of IL17 (603149)-producing cells within these T-cell populations. Rapamycin treatment reduced both STAT3 activation and Th17 cell frequency in lupus patients. Th17 cells from children with LN exhibited high AKT activity and enhanced migratory capacity. Inhibition of AKT in cells from LN patients resulted in reduced Th17-cell migration. Kshirsagar et al. (2014) concluded that the AKT signaling pathway plays a significant role in Th17-cell migratory activity in children with LN. They suggested that inhibition of AKT may result in suppression of chronic inflammation in LN. </p><p>Sun et al. (2016) found that overexpression of Elmo2 (606421) in mouse adipocytes and rat skeletal muscle cells enhanced insulin-dependent Glut4 (SLC2A4; 138190) membrane translocation. In contrast, knockdown of Elmo2 suppressed Glut4 translocation. Elmo2 was required for insulin-induced Rac1 (602048) GTP loading and Akt membrane association, but not Akt activation, in rat skeletal muscle cells. Sun et al. (2016) concluded that ELMO2 regulates insulin-dependent GLUT4 membrane translocation by modulating RAC1 activity and AKT membrane compartmentalization. </p><p>Guo et al. (2016) explored a possible link between hypoxia and Akt activity. They found that AKT was prolyl-hydroxylated by the oxygen-dependent hydroxylase EGLN1 (606425). The von Hippel-Lindau protein (VHL; 608537) bound directly to hydroxylated AKT and inhibited AKT activity. In cells lacking oxygen or functional VHL, AKT was activated to promote cell survival and tumorigenesis. Guo et al. (2016) also identified cancer-associated AKT mutations that impair AKT hydroxylation and subsequent recognition by VHL, thus leading to AKT hyperactivation. Guo et al. (2016) concluded that microenvironmental changes, such as hypoxia, can affect tumor behaviors by altering AKT activation, which has a critical role in tumor growth and therapeutic resistance. </p><p>Xu et al. (2020) showed that activated AKT in human hepatocellular carcinoma cells phosphorylates cytosolic phosphoenolpyruvate carboxykinase-1 (PCK1; 614168), the rate-limiting enzyme in gluconeogenesis, at ser90. Phosphorylated PCK1 translocates to the endoplasmic reticulum, where it uses GTP as a phosphate donor to phosphorylate INSIG1 (602055) at ser207 and INSIG2 (608660) at ser151. This phosphorylation reduces the binding of sterols to INSIG1 and INSIG2 and disrupts the interaction between INSIG proteins and SCAP (601510), leading to the translocation of the SCAP-SREBP complex to the Golgi apparatus, the activation of SREBP proteins (SREBP1, 184756 or SREBP2, 600481) and the transcription of downstream lipogenesis-related genes, proliferation of tumor cells, and tumorigenesis in mice. In addition, phosphorylation of PCK1 at ser90, INSIG1 at ser207, and INSIG2 at ser151 was not only positively correlated with the nuclear accumulation of SREBP1 in samples from patients with hepatocellular carcinoma, but also associated with poor hepatocellular carcinoma prognosis. </p>
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<h4>
<span class="mim-font">
<strong>Biochemical Features</strong>
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<p><strong><em>Crystal Structure</em></strong></p><p>
The protein activity of PKB is stimulated by phosphorylation at 2 regulatory sites, thr309 of the activation segment and ser474 of the hydrophobic motif, a conserved feature of many AGC kinases. Yang et al. (2002) provided a molecular explanation for regulation by ser474 phosphorylation by analyzing the crystal structures of the unphosphorylated and thr309-phosphorylated states of the PKB kinase domain. Activation by ser474 phosphorylation occurs via a disorder-to-order transition of the alpha-C helix with concomitant restructuring of the activation segment and reconfiguration of the kinase bilobal structure. These conformational changes are mediated by a phosphorylation-promoted interaction of the hydrophobic motif with a channel on the N-terminal lobe induced by the ordered alpha-C helix and are mimicked by peptides corresponding to the hydrophobic motif of PKB and potently by the hydrophobic motif of PRK2 (602549). </p>
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<h4>
<span class="mim-font">
<strong>Mapping</strong>
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<p>Staal et al. (1988) mapped the AKT1 gene to chromosome 14q32.3 by analysis of human-hamster somatic cell hybrids and by in situ hybridization of normal human metaphase chromosome spreads with a radioactive AKT1 probe. The AKT1 gene is proximal to the immunoglobulin heavy chain loci. By fluorescence in situ hybridization, Bellacosa et al. (1993) mapped akt to mouse chromosome 12; furthermore, they showed that the gene is on rat chromosome 6 and that both are in close proximity to the Igh locus. </p>
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<h4>
<span class="mim-font">
<strong>Molecular Genetics</strong>
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<p><strong><em>Cowden Syndrome 6</em></strong></p><p>
Among 91 individuals with Cowden syndrome who were negative for mutations in known disease-causing genes, Orloff et al. (2013) found that 2 carried mutations in the AKT1 gene. None of these mutations were detected in 96 population controls, the Single Nucleotide Polymorphism database (dbSNP), or the available dataset of the 1000 Genomes Project. Functional assays demonstrated that these mutations resulted in upregulation of AKT1 phosphorylated at thr308 (P-AKT1-Thr308). </p><p><strong><em>Breast, Colorectal, and Ovarian Cancer</em></strong></p><p>
Carpten et al. (2007) reported the identification of a somatic mutation in human breast, colorectal, and ovarian cancers that results in a glutamic acid-to-lysine substitution at amino acid 17 (see 164730.0001) in the lipid-binding pocket of AKT1. Lys17 alters the electrostatic interactions of the pocket and forms new hydrogen bonds with a phosphoinositide ligand. This mutation activates AKT1 by means of pathologic localization to the plasma membrane, stimulates downstream signaling, transforms cells, and induces leukemia in mice. Carpten et al. (2007) concluded that this mechanism indicates a direct role of AKT1 in human cancer, and adds to the known genetic alterations that promote oncogenesis through the phosphatidylinositol-3-OH kinase/AKT pathway. Furthermore, Carpten et al. (2007) suggested that the E17K substitution decreases the sensitivity to an allosteric kinase inhibitor, so this mutation may have important clinical utility for AKT drug development. </p><p><strong><em>Proteus Syndrome</em></strong></p><p>
Using exome sequencing followed by a custom restriction-enzyme assay, Lindhurst et al. (2011) demonstrated that the activating AKT1 E17K mutation (164730.0001) was present in one or more samples from 26 (90%) of 29 patients with Proteus syndrome (176920) who were tested; the fraction of mutant DNA in the positive specimens ranged from 1% to approximately 50%. The authors stated that there was no association between the proportion of mutant alleles and the overall clinical severity or specific manifestations of the phenotype; in addition, their data did not suggest a specific stage during development at which the mutation arose in these patients. Lindhurst et al. (2011) noted that their findings supported the mosaicism hypothesis that had earlier been advanced by Happle (1987), who suggested that sporadically occurring disorders with an irregular distribution of skin involvement, such as Proteus syndrome, might be the result of an autosomal dominant lethal gene that was compatible with survival only in the mosaic state. </p><p><strong><em>Associations Pending Confirmation</em></strong></p><p>
---Schizophrenia</p><p>AKT-GSK3B signaling is a target of lithium and as such has been implicated in the pathogenesis of mood disorders. Emamian et al. (2004) provided evidence that this signaling pathway also has a role in schizophrenia (SCZD; 181500). Specifically, they presented convergent evidence for a decrease in AKT1 protein levels and levels of phosphorylation of GSK3B at serine-9 in the peripheral lymphocytes and brains of individuals with schizophrenia; a significant association between schizophrenia and an AKT1 haplotype associated with lower AKT1 protein levels; and a greater sensitivity to the sensorimotor gating-disruptive effect of amphetamine, conferred by AKT1 deficiency. The findings supported the proposal that alterations in AKT1-GSK3B signaling contribute to schizophrenia pathogenesis and identified AKT1 as a potential schizophrenia susceptibility gene. Consistent with this proposal, Emamian et al. (2004) also showed that haloperidol induces a stepwise increase in regulatory phosphorylation of AKT1 in the brains of treated mice that could compensate for an impaired function of this signaling pathway in schizophrenia. </p><p>Using the 5 single-nucleotide polymorphisms described by Emamian et al. (2004) and 2 additional SNPs, Schwab et al. (2005) investigated the association between the AKT1 gene variants in a sample of 79 of their families with schizophrenia. They obtained statistical significance for single markers (p = 0.002) and multilocus haplotypes (p = 0.0013) located in the same region reported in the previous study. </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Animal Model</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>Holland et al. (2000) transferred, in a tissue-specific manner, genes encoding activated forms of Ras (190070) and Akt to astrocytes and neural progenitors in mice. Holland et al. (2000) found that although neither activated Ras nor Akt alone was sufficient to induce glioblastoma multiforme (GBM; 137800) formation, the combination of activated Ras and Akt induced high-grade gliomas with the histologic features of human GBMs. These tumors appeared to arise after gene transfer to neural progenitors, but not after transfer to differentiated astrocytes. Increased activity of RAS is found in many human GBMs, and Holland et al. (2000) demonstrated that Akt activity is increased in most of these tumors, implying that combined activation of these 2 pathways accurately models the biology of this disease. </p><p>By targeted disruption of the Akt1 gene, Chen et al. (2001) created an Akt1-null mouse model. Homozygous mice were viable but smaller than wildtype littermates, and they did not display a diabetic phenotype. Upon exposure to genotoxic stress, their life span was shorter. Chen et al. (2001) found that the Akt1-null mice showed increased spontaneous apoptosis in testes and thymi. They observed an attenuation of spermatogenesis in the Akt1-null male mice, and thymocytes were more sensitive to gamma irradiation and dexamethasone-induced apoptosis. Akt1-null mouse embryo fibroblasts were also more susceptible to apoptosis induced by TNF, anti-Fas (134637), ultraviolet irradiation, and serum withdrawal. </p><p>To determine the effects of AKT on cardiac function in vivo, Condorelli et al. (2002) generated a mouse model of cardiac-specific Akt overexpression. Transgenic mice were generated by using the E40K, constitutively active mutant of Akt linked to the rat alpha-myosin heavy chain promoter (160710). The effects of cardiac-selective Akt overexpression were studied by echocardiography, cardiac catheterization, and histologic and biochemical techniques. Akt overexpression produced cardiac hypertrophy at the molecular and histologic levels, with a significant increase in cardiomyocyte cell size and concentric left ventricular hypertrophy. Akt-transgenic mice also showed a remarkable increase in cardiac contractility compared with wildtype controls as demonstrated in an invasive hemodynamic study. Diastolic function was not affected at rest but was impaired during graded dobutamine infusion. Other studies indicated that Akt induced hypertrophy in vivo by activating the GSK3B/GATA4 (600576) pathway. These results demonstrated that Akt regulates cardiomyocyte cell size in vivo and that Akt modulates cardiac contractility in vivo without directly affecting beta-adrenergic receptor (see 109630) signaling capacity. </p><p>Kim et al. (2003) found that, in addition to hypertrophy, transgenic mice with cardiac-specific overexpression of active Akt showed enhanced left ventricular function. Isolated ventricular myocytes showed increased contractility, which was associated with increased Ca(2+) transients and Ca(2+) channel currents. The rate of relaxation was also enhanced. Kim et al. (2003) determined that Serca2a protein levels were increased by 6.6-fold in transgenic animals, and inhibitor studies suggested that Serca2a overexpression mediated the enhanced left ventricular function. </p><p>Peng et al. (2003) developed Akt1/Akt2 double-knockout (DKO) mice. DKO mice showed severe growth deficiency and died shortly after birth. These mice displayed impaired skin development due to a proliferation defect, skeletal muscle atrophy due to marked decrease in individual muscle cell size, and impaired bone development. The defects were similar to the phenotype of Igf1 receptor (IGF1R; 147370)-deficient mice, suggesting that Akt may serve as an important downstream effector of Igf1r during mouse development. DKO mice also displayed impeded adipogenesis through decreased induction of Pparg (601487). </p><p>Using adenoviral vectors, Iaccarino et al. (2004) selectively transferred the human AKT1 gene to the common carotid endothelium of normotensive and spontaneously hypertensive rats (SHR). In vitro, the endothelial vasorelaxation response to acetylcholine, isoproterenol, and insulin was blunted in control carotids from SHR compared to normotensive rats, and human AKT1 overexpression corrected those responses. Blood flow assessed in vivo by Doppler ultrasound was reduced in SHR compared to normotensive rat carotids and normalized after AKT1 gene transfer. In primary cultured endothelial cells, there was mislocalization of AKT1 in SHR. Iaccarino et al. (2004) concluded that AKT1 plays a role in endothelial dysfunction in hypertension, and suggested that impaired membrane localization may be the pathogenic mechanism. </p><p>Ackah et al. (2005) found that loss of Akt1, but not Akt2, resulted in defective ischemia and Vegf-induced angiogenesis and severe peripheral vascular disease in mice. Akt1-knockout mice also had reduced endothelial progenitor cell (EPC) mobilization in response to ischemia. Introduction of EPCs from wildtype mice, but not EPCs from Akt1 -/- mice, into wildtype mice improved limb blood flow after ischemia. Loss of Akt1 reduced basal phosphorylation of several Akt substrates, migration of fibroblasts and endothelial cells, and nitric oxide release. Ackah et al. (2005) concluded that AKT1 exerts an essential role in blood flow control, cellular migration, and nitric oxide synthesis during postnatal angiogenesis. </p><p>Liu et al. (2005) presented evidence suggesting a role for G protein-coupled receptor kinase-2 (GRK2; 109635) in hepatic vascular dynamics in a rat model of liver sinusoidal endothelial injury and portal hypertension induced by bile duct ligation. Sinusoidal endothelial cells isolated from the affected animals had increased levels of GRK2, reduced levels of phosphorylated AKT and eNOS, and decreased levels of the vasodilator NO. Further analysis showed that the C terminus of GRK2 bound to and inhibited the phosphorylation and activation of AKT. Gene silencing of GRK2 using siRNA in injured sinusoidal endothelial cells restored AKT activity and resulted in increased NO production. Liu et al. (2005) also found that heterozygous Grk2 mice had increased levels of phosphorylated Akt and decreased portal hypertension in response to injury compared to wildtype mice. Liu et al. (2005) proposed a mechanism in which upregulation of GRK2 after endothelial cell injury directly inhibits phosphorylation of AKT, leading to reduced activation of eNOS and decreased production of NO, and resulting in portal hypertension. </p><p>Chen et al. (2005) demonstrated in mice that Akt1 is the predominant isoform in vascular endothelial cells. In vitro endothelial cells from Akt1-null mice showed impaired migration in response to VEGF and bound 3 times less fibrinogen (see 134820) than wildtype cells. Akt1-null mice showed significantly enhanced angiogenesis, which was associated with impaired blood vessel maturation and increased vascular permeability. The neovasculature in Akt1-null mice had decreased basement membrane thickness and decreased laminin (see 156225) deposition. These changes were associated with reduced expression of thrombospondin-1 (THBS1; 188060) and -2 (THBS2; 188061). Chen et al. (2005) concluded that Akt1 is vital for the regulation of vascular permeability, angiogenic responses, and vascular maturation. </p><p>Chen et al. (2006) demonstrated that Akt1 deficiency attenuated tumor development in Pten +/- mice. </p><p>Using gene expression profiling, Lai et al. (2006) found that Akt1-deficient mice showed alterations in the expression of genes in the prefrontal cortex involved in synaptic function, neuronal development, myelination, and actin polymerization. Although there was no detectable difference in expression of key dopamine-related genes, there was a trend for an increase in extracellular dopamine in the prefrontal cortex. Ultrastructural analysis showed changed in the dendritic architecture of pyramidal neurons in the prefrontal cortex. Akt1-deficient mice had normal acquisition of prefrontal cortex-dependent cognitive tasks but abnormal working memory retention under neurochemical challenge. Lai et al. (2006) suggested that the changes observed in Akt1-deficient mice may offer insight into changes observed in patients with schizophrenia. </p><p>Using 2 different methods, chimeric and mosaic, Lindhurst et al. (2019) generated Proteus syndrome mouse models that endogenously regulated mosaic expression of the Proteus syndrome variant, E17K. Mice generated by both methods displayed characteristic types of overgrowth seen in human patients with Proteus syndrome, including vascular malformations, cysts, hyperplasia, and stromal expansion, with the chimeric method appearing to be more successful than the mosaic method. Identification of E17K-positive cells and increased Akt signaling in lesional tissue of chimeric Proteus syndrome mice revealed that the E17K-positive cells likely signaled neighboring E17K-negative cells to proliferate, suggesting that the Proteus syndrome variant drove overgrowth in a non-cell autonomous manner. </p>
</span>
<div>
<br />
</div>
</div>
<div>
<h4>
<span class="mim-font">
<strong>ALLELIC VARIANTS</strong>
</span>
<strong>3 Selected Examples):</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0001 &nbsp; BREAST CANCER, SOMATIC</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
COLORECTAL CANCER, SOMATIC, INCLUDED<br />
OVARIAN CANCER, SOMATIC, INCLUDED<br />
PROTEUS SYNDROME, SOMATIC, INCLUDED
</span>
</div>
<div>
<span class="mim-text-font">
AKT1, GLU17LYS
<br />
SNP: rs121434592,
gnomAD: rs121434592,
ClinVar: RCV000015017, RCV000015018, RCV000015019, RCV000031926, RCV000795313, RCV001813745, RCV004668732
</span>
</div>
<div>
<span class="mim-text-font">
<p>Carpten et al. (2007) identified a 49G-A transition in the AKT1 gene, resulting in a glu17-to-lys (E17K) substitution, in tumor specimens from 5 of 61 (8%) breast cancer (114480) samples, 3 of 51 (6%) colorectal cancers (114500), and 1 of 50 (2%) ovarian cancers (167000). DNA from normal adjacent tissue or white blood cells showed no evidence of this mutation, which occurs in the PHD domain of AKT1. The AKT1 mutation was mutually exclusive with respect to mutations in PIK3CA (171834) and complete loss of PTEN (601728) protein expression. Carpten et al. (2007) showed that this mutation alters the AKT1-PHD conformation, results in activation of AKT1, and alters the subcellular location of AKT1 to the plasma membrane. Furthermore, Carpten et al. (2007) found that the AKT1 containing the E17K mutation was able to transform cells in culture and induce leukemia in mice. </p><p>Lindhurst et al. (2011) performed exome sequencing of 11 DNA samples from 6 patients with Proteus syndrome (176920), as well as 1 sample each from 5 unaffected parents and from 1 patient's unaffected identical twin sib, and identified an activating E17K mutation in the AKT1 gene in 7 samples from 3 patients. The association was confirmed using a custom restriction-enzyme assay: overall, 26 (90%) of 29 patients with Proteus syndrome who were tested carried the E17K mutation in one or more samples, with the fraction of mutant DNA in the positive specimens ranging from 1% to approximately 50%. Mutant cell lines demonstrated greater AKT phosphorylation than control cell lines, and single-cell clones established from the same starting culture but differing in mutation status had different levels of AKT phosphorylation. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0002 &nbsp; COWDEN SYNDROME 6</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
AKT1, ARG25CYS
<br />
SNP: rs397514644,
ClinVar: RCV000033177
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a 38-year-old female with Cowden syndrome (CWS6; 615109), Orloff et al. (2013) identified a C-to-T transition at nucleotide 73 in exon 2 of the AKT1 gene, resulting in an arginine-to-cysteine substitution at codon 25 (R25C). </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0003 &nbsp; COWDEN SYNDROME 6</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
AKT1, THR435PRO
<br />
SNP: rs397514645,
ClinVar: RCV000033178
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a 47-year-old female with Cowden syndrome (CWS6; 615109), Orloff et al. (2013) identified an A-to-C transversion at nucleotide 1303 in exon 12 of the AKT1 gene, resulting in an threonine-to-proline substitution at codon 435 (T435P). </p>
</span>
</div>
<div>
<br />
</div>
</div>
</div>
<div>
<h4>
<span class="mim-font">
<strong>REFERENCES</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<ol>
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<strong>Akt induces enhanced myocardial contractility and cell size in vivo in transgenic mice.</strong>
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Dimmeler, S., Fleming, I., Fisslthaler, B., Hermann, C., Busse, R., Zeiher, A. M.
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Emamian, E. S., Hall, D., Birnbaum, M. J., Karayiorgou, M., Gogos, J. A.
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<p class="mim-text-font">
Franke, T. F., Kaplan, D. R., Cantley, L. C., Toker, A.
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Franke, T. F., Yang, S.-I., Chan, T. O., Datta, K., Kaziauskas, A., Morrison, D. K., Kaplan, D. R., Tsichlis, P. N.
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Fulton, D., Gratton, J.-P., McCabe, T. J., Fontana, J., Fujio, Y., Walsh, K., Franke, T. F., Papapetropoulos, A., Sessa, W. C.
<strong>Regulation of endothelium-derived nitric oxide production by the protein kinase Akt.</strong>
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<p class="mim-text-font">
Furnari, F. B., Huang, H. J., Cavenee, W. K.
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<p class="mim-text-font">
Guo, J., Chakraborty, A. A., Liu, P., Gan, W., Zheng, X., Inuzuka, H., Wang, B., Zhang, J., Zhang, L., Yuan, M., Novak, J., Cheng, J. Q., Toker, A., Signoretti, S., Zhang, Q., Asara, J. M., Kaelin, W. G., Jr., Wei, W.
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</p>
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<li>
<p class="mim-text-font">
Hajduch, E., Litherland, G. J., Hundal, H. S.
<strong>Protein kinase B (PKB/Akt)--a key regulator of glucose transport?</strong>
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</p>
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<li>
<p class="mim-text-font">
Happle, R.
<strong>Lethal genes surviving by mosaicism: a possible explanation for sporadic birth defects involving the skin.</strong>
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[PubMed: 3033033]
[Full Text: https://doi.org/10.1016/s0190-9622(87)80249-9]
</p>
</li>
<li>
<p class="mim-text-font">
Hemmings, B. A.
<strong>Akt signaling: linking membrane events to life and death decisions.</strong>
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[PubMed: 9019819]
[Full Text: https://doi.org/10.1126/science.275.5300.628]
</p>
</li>
<li>
<p class="mim-text-font">
Holland, E. C., Celestino, J., Dai, C., Schaefer, L., Sawaya, R. E., Fuller, G. N.
<strong>Combined activation of Ras and Akt in neural progenitors induces glioblastoma formation in mice.</strong>
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[PubMed: 10802656]
[Full Text: https://doi.org/10.1038/75596]
</p>
</li>
<li>
<p class="mim-text-font">
Hu, M. C.-T., Lee, D.-F., Xia, W., Golfman, L. S., Ou-Yang, F., Yang, J.-Y., Zou, Y., Bao, S., Hanada, N., Saso, H., Kobayashi, R., Hung, M.-C.
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[PubMed: 15084260]
[Full Text: https://doi.org/10.1016/s0092-8674(04)00302-2]
</p>
</li>
<li>
<p class="mim-text-font">
Humbert, S., Bryson, E. A., Cordelieres, F. P., Connors, N. C., Datta, S. R., Finkbeiner, S., Greenberg, M. E., Saudou, F.
<strong>The IGF-1/Akt pathway is neuroprotective in Huntington&#x27;s disease and involves huntingtin phosphorylation by Akt.</strong>
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[PubMed: 12062094]
[Full Text: https://doi.org/10.1016/s1534-5807(02)00188-0]
</p>
</li>
<li>
<p class="mim-text-font">
Iaccarino, G., Ciccarelli, M., Sorriento, D., Cipolletta, E., Cerullo, V., Iovino, G. L., Paudice, A., Elia, A., Santulli, G., Campanile, A., Arcucci, O., Pastore, L., Salvatore, F., Condorelli, G., Trimarco, B.
<strong>AKT participates in endothelial dysfunction in hypertension.</strong>
Circulation 109: 2587-2593, 2004.
[PubMed: 15136501]
[Full Text: https://doi.org/10.1161/01.CIR.0000129768.35536.FA]
</p>
</li>
<li>
<p class="mim-text-font">
Inoki, K., Li, Y., Zhu, T., Wu, J., Guan, K.-L.
<strong>TSC2 is phosphorylated and inhibited by Akt and suppresses mTOR signalling.</strong>
Nature Cell Biol. 4: 648-657, 2002.
[PubMed: 12172553]
[Full Text: https://doi.org/10.1038/ncb839]
</p>
</li>
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Contributors:
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<span class="mim-text-font">
Bao Lige - updated : 09/02/2021<br>Elizabeth S. Partan - updated : 02/16/2021<br>Ada Hamosh - updated : 09/21/2020<br>Ada Hamosh - updated : 09/27/2016<br>Paul J. Converse - updated : 09/14/2016<br>Paul J. Converse - updated : 7/17/2015<br>Ada Hamosh - updated : 5/30/2014<br>Ada Hamosh - updated : 3/1/2013<br>Ada Hamosh - updated : 1/7/2013<br>Marla J. F. O&#x27;Neill - updated : 8/1/2011<br>Ada Hamosh - updated : 9/15/2009<br>Matthew B. Gross - updated : 5/7/2009<br>Ada Hamosh - updated : 1/22/2008<br>Ada Hamosh - updated : 8/20/2007<br>Cassandra L. Kniffin - updated : 1/4/2007<br>Ada Hamosh - updated : 7/24/2006<br>Patricia A. Hartz - updated : 7/17/2006<br>Ada Hamosh - updated : 2/10/2006<br>Marla J. F. O&#x27;Neill - updated : 2/3/2006<br>Cassandra L. Kniffin - updated : 11/11/2005<br>Ada Hamosh - updated : 10/25/2005<br>Cassandra L. Kniffin - updated : 10/7/2005<br>Patricia A. Hartz - updated : 9/28/2005<br>Patricia A. Hartz - updated : 9/8/2005<br>Paul J. Converse - updated : 5/13/2004<br>Stylianos E. Antonarakis - updated : 4/30/2004<br>Ada Hamosh - updated : 4/7/2004<br>Patricia A. Hartz - updated : 2/17/2004<br>Victor A. McKusick - updated : 1/23/2004<br>Ada Hamosh - updated : 8/26/2003<br>Patricia A. Hartz - updated : 7/8/2003<br>Ada Hamosh - updated : 11/18/2002<br>Patricia A. Hartz - updated : 11/7/2002<br>Victor A. McKusick - updated : 10/21/2002<br>Stylianos E. Antonarakis - updated : 9/18/2002<br>Patricia A. Hartz - reorganized : 8/20/2002<br>Patricia A. Hartz - updated : 8/20/2002<br>Stylianos E. Antonarakis - updated : 11/6/2001<br>George E. Tiller - updated : 4/18/2001<br>Ada Hamosh - updated : 4/28/2000<br>Paul J. Converse - updated : 3/7/2000<br>Ada Hamosh - updated : 6/23/1999<br>Ada Hamosh - updated : 4/8/1999<br>Stylianos E. Antonarakis - updated : 4/1/1999
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Victor A. McKusick : 6/2/1986
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Edit History:
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