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<script type="text/javascript" src="/corehtml/pmc/jatsreader/ptpmc_3.22/js/jr.boots.min.js"> </script><title>99mTc-Regioselectively addressable functionalized template-[cyclo-(Arg-Gly-Asp-d-Phe-Lys)]4 - Molecular Imaging and Contrast Agent Database (MICAD) - NCBI Bookshelf</title>
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<meta name="citation_author" content="Kam Leung">
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<meta name="og:description" content="Integrins are a family of heterodimeric glycoproteins on cell surfaces that mediate diverse biological events involving cell&ndash;cell and cell&ndash;matrix interactions (1). Integrins consist of an &alpha; and a &beta; subunit and are important for cell adhesion and signal transduction. The &alpha;v&beta;3 integrin is the most prominent receptor affecting tumor growth, tumor invasiveness, metastasis, tumor-induced angiogenesis, inflammation, osteoporosis, and rheumatoid arthritis (2-7). Expression of the &alpha;v&beta;3 integrin is strong on tumor cells and activated endothelial cells, whereas expression is weak on resting endothelial cells and most normal tissues. Antagonists of &alpha;v&beta;3 are being studied as anti-tumor and anti-angiogenic agents, and agonists of &alpha;v&beta;3 are being studied as angiogenic agents for coronary angiogenesis (6, 8, 9). A peptide sequence consisting of Arg-Gly-Asp (RGD) has been identified as a recognition motif used by extracellular matrix proteins (vitronectin, fibrinogen, laminin, and collagen) to bind to a variety of integrins, including &alpha;v&beta;3. Various radiolabeled antagonists have been introduced to image tumors and tumor angiogenesis (10).">
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find">&#10008;</a></nav><nav id="jr-fip-info-p"><a id="jr-fip-prev" class="wsprkl btn" title="Jump to previuos match">&#9664;</a><button id="jr-fip-matches">no matches yet</button><a id="jr-fip-next" class="wsprkl btn" title="Jump to next match">&#9654;</a></nav></nav></div><div id="jr-epub-interstitial" class="hidden"></div><div id="jr-content"><article data-type="main"><div class="main-content lit-style" itemscope="itemscope" itemtype="http://schema.org/CreativeWork"><div class="meta-content fm-sec"><div class="fm-sec"><h1 id="_NBK24598_"><span class="title" itemprop="name"><sup>99m</sup>Tc-Regioselectively addressable functionalized template-[cyclo-(Arg-Gly-Asp-<span class="small-caps">d</span>-Phe-Lys)]<sub>4</sub></span></h1><div itemprop="alternativeHeadline" class="subtitle whole_rhythm"><sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub></div><p class="contribs">Leung K.</p><p class="fm-aai"><a href="#_NBK24598_pubdet_">Publication Details</a></p></div></div><div class="jig-ncbiinpagenav body-content whole_rhythm" data-jigconfig="allHeadingLevels: ['h2'],smoothScroll: false" itemprop="text"><div class="iconblock whole_rhythm clearfix ten_col table-wrap" id="figRAFTRGD99mTcT1"><a href="/books/NBK24598/table/RAFT-RGD99mTc.T1/?report=objectonly" target="object" title="Table" class="img_link icnblk_img" rid-ob="figobRAFTRGD99mTcT1"><img class="small-thumb" src="/corehtml/pmc/css/bookshelf/2.26/img/table-icon.gif" alt="Table Icon" /></a><div class="icnblk_cntnt"><h4 id="RAFT-RGD99mTc.T1"><a href="/books/NBK24598/table/RAFT-RGD99mTc.T1/?report=objectonly" target="object" rid-ob="figobRAFTRGD99mTcT1">Table</a></h4><p class="float-caption no_bottom_margin">
<i>In vitro</i>
Rodents
</p></div></div><div id="RAFT-RGD99mTc.Background"><h2 id="_RAFT-RGD99mTc_Background_">Background</h2><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>Integrins are a family of heterodimeric glycoproteins on cell surfaces that mediate diverse biological events involving cell&#x02013;cell and cell&#x02013;matrix interactions (<a class="bibr" href="#RAFT-RGD99mTc.REF.1" rid="RAFT-RGD99mTc.REF.1">1</a>). Integrins consist of an &#x003b1; and a &#x003b2; subunit and are important for cell adhesion and signal transduction. The &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> integrin is the most prominent receptor affecting tumor growth, tumor invasiveness, metastasis, tumor-induced angiogenesis, inflammation, osteoporosis, and rheumatoid arthritis (<a href="#RAFT-RGD99mTc.REF.2">2-7</a>). Expression of the &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> integrin is strong on tumor cells and activated endothelial cells, whereas expression is weak on resting endothelial cells and most normal tissues. Antagonists of &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> are being studied as anti-tumor and anti-angiogenic agents, and agonists of &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> are being studied as angiogenic agents for coronary angiogenesis (<a class="bibr" href="#RAFT-RGD99mTc.REF.6" rid="RAFT-RGD99mTc.REF.6">6</a>, <a class="bibr" href="#RAFT-RGD99mTc.REF.8" rid="RAFT-RGD99mTc.REF.8">8</a>, <a class="bibr" href="#RAFT-RGD99mTc.REF.9" rid="RAFT-RGD99mTc.REF.9">9</a>). A peptide sequence consisting of Arg-Gly-Asp (RGD) has been identified as a recognition motif used by extracellular matrix proteins (vitronectin, fibrinogen, laminin, and collagen) to bind to a variety of integrins, including &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub>. Various radiolabeled antagonists have been introduced to image tumors and tumor angiogenesis (<a class="bibr" href="#RAFT-RGD99mTc.REF.10" rid="RAFT-RGD99mTc.REF.10">10</a>).</p><p>Most of the cyclic RGD peptides are composed of five amino acids. Haubner et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.11" rid="RAFT-RGD99mTc.REF.11">11</a>) reported that various cyclic RGD peptides exhibit selective inhibition of binding to the &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> integrin (50% inhibition concentration (IC<sub>50</sub>) = 7&#x02013;40 nM) but not to the &#x003b1;<sub>v</sub>&#x003b2;<sub>5</sub> (IC<sub>50</sub> = 600&#x02013;4,000 nM) or &#x003b1;<sub>IIb</sub>&#x003b2;<sub>3</sub> (IC<sub>50</sub> = 700&#x02013;5,000 nM) integrins. Various radiolabeled cyclic RGD peptides have been found to have high accumulation in tumors in nude mice (<a class="bibr" href="#RAFT-RGD99mTc.REF.12" rid="RAFT-RGD99mTc.REF.12">12</a>). Hydrazinonicotinic acid (HYNIC) is a coupling agent for <sup>99m</sup>Tc-labeling of peptides that can achieve high specific activities without affecting the receptor-binding ability of the amino acid sequence. <sup>99m</sup>Tc is bound to the hydrazine group, and other coordination sites could be occupied by one or more coligands. Liu et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.13" rid="RAFT-RGD99mTc.REF.13">13</a>) reported the success of radiolabeling the cyclo(Arg-Gly-Asp-<span class="small-caps">d</span>-Phe-Lys) (c(RGDfK)) tetramer linked by glutamic acid and conjugated with HYNIC, which displayed high tumor accumulation in nude mice bearing human tumor xenografts. Boturyn et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.14" rid="RAFT-RGD99mTc.REF.14">14</a>) generated a versatile molecular regioselectively addressable functionalized template (RAFT) platform with a cyclic decapeptide [c(-Lys(Boc)-Lys(Alloc)-Lys(Boc)-Pro-Gly-Lys(Boc)-Lys(Alloc)-Lys(Boc)-Pro-Gly-)] that had two attachment sides. The upper side is linked to four copies of the c(RGDfK) peptide for integrin &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> targeting, and the bottom side is linked to <sup>99m</sup>Tc for single-photon emission computed tomography (SPECT) imaging or other labels for other imaging modalities. Sancey et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.15" rid="RAFT-RGD99mTc.REF.15">15</a>) reported that <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> efficiently accumulated into tumors in mice. <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> is an integrin-targeted molecular imaging agent developed for imaging of tumor vasculature and tumor angiogenesis.</p></div><div id="RAFT-RGD99mTc.Synthesis"><h2 id="_RAFT-RGD99mTc_Synthesis_">Synthesis</h2><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD+synthesis" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>Boturyn et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.14" rid="RAFT-RGD99mTc.REF.14">14</a>) described a detailed synthesis of RAFT-c(-RGDfK-)<sub>4</sub> by solid-phase peptide synthesis. Radiolabeling of RAFT-c(-RGDfK-)<sub>4</sub> was performed by heating 2.2&#x02013;3 GBq (59&#x02013;81 mCi) <sup>99m</sup>Tc in a commercially available IsoLink kit at 100&#x000b0;C for 20 min (<a class="bibr" href="#RAFT-RGD99mTc.REF.15" rid="RAFT-RGD99mTc.REF.15">15</a>). The peptide was added to one third of the mixture after neutralization with HCl; the mixture was then incubated at 60&#x000b0;C for 20 min. <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> had a radiochemical purity of &#x0003e;95%. <sup>99m</sup>Tc-RAFT-c(-RADfK-) (non-specific control) and <sup>99m</sup>Tc-c(RGDfK) (specific control) were radiolabeled similarly.</p></div><div id="RAFT-RGD99mTc.In_Vitro_Studies_Tes"><h2 id="_RAFT-RGD99mTc_In_Vitro_Studies_Tes_"><i>In Vitro</i> Studies: Testing in Cells and Tissues</h2><p>[<a href="/entrez/query.fcgi?cmd=PureSearch&#x00026;db=pubmed&#x00026;details_term=RAFT+RGD+AND%20in%20vitro" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>Boturyn et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.14" rid="RAFT-RGD99mTc.REF.14">14</a>) reported that RAFT-c(-RGDfK-)<sub>4</sub> inhibited CHO3a cell adhesion to vitronectin (IC<sub>50</sub> = 0.5 &#x000b1; 0.05 &#x003bc;M). RAFT-c(-RGDfK-)<sub>4</sub> was internalized into the cells as observed with fluorescence microscopy. Sancey et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.15" rid="RAFT-RGD99mTc.REF.15">15</a>) performed <i>in vitro</i> blood distribution pattern analyses of <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> and <sup>9m</sup>Tc-RAFT-c(-RADfK-) in human blood. After incubation at room temperature for 60 min, 42% and 15% of <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> bound to globulins and cells, respectively. On the other hand, only 8% and 10% of <sup>99m</sup>Tc-RAFT-c(-RADfK-) bound to globulins and cells, respectively.</p></div><div id="RAFT-RGD99mTc.Animal_Studies"><h2 id="_RAFT-RGD99mTc_Animal_Studies_">Animal Studies</h2><div id="RAFT-RGD99mTc.Rodents"><h3>Rodents</h3><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD+AND+rodentia" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>Sancey et al. (<a class="bibr" href="#RAFT-RGD99mTc.REF.15" rid="RAFT-RGD99mTc.REF.15">15</a>) performed biodistribution studies of <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub>, <sup>99m</sup>Tc-RAFT-c(-RADfK-)<sub>4</sub> (non-specific control), and <sup>99m</sup>Tc-c(RGDfK) (specific control) in mice bearing B16-F0 or TS/A-pc tumors. TS/A-pc tumor cells exhibited a higher level of &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub> expression than B16-F0 tumor cells. At 60 min after injection, <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> tumor uptake (% injected dose per gram (ID/g)) was higher than that of <sup>99m</sup>Tc-c(RGDfK) and <sup>99m</sup>Tc-RAFT-c(-RADfK-)<sub>4</sub> in B16-F0 (2.4 &#x000b1; 0.5, 1.6 &#x000b1; 0.4, 1.0 &#x000b1; 0.1, respectively) and in TS/A-pc tumors (2.7 &#x000b1; 0.8, 1.9 &#x000b1; 0.4, 0.7 &#x000b1; 0.1, respectively). Liver and kidney exhibited the highest uptake. <sup>99m</sup>Tc-c(RGDfK) and <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> tumor/muscle ratios were 2.4 &#x000b1; 0.5 and 3.3 &#x000b1; 0.7 (<i>P</i> = 0.02), respectively, in B16-F0 tumors and 3.2 &#x000b1; 0.8 and 2.7 &#x000b1; 0.3 (<i>P</i> = 0.2), respectively, in TS/A-pc tumors. Planar SPECT images showed that tumor/muscle activity ratios of <sup>99m</sup>Tc-c(RGDfK) and <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> were not statistically different in mice bearing B16-F0 tumors (2.5 &#x000b1; 0.8 <i>versus</i> 2.2 &#x000b1; 0.5) and in mice bearing TS/A-pc tumors (2.8 &#x000b1; 0.5 <i>versus</i> 2.7 &#x000b1; 0.5). These ratios were significantly higher than those observed with <sup>99m</sup>Tc-RAFT-c(-RADfK-)<sub>4</sub> (<i>P</i> &#x0003c; 0.0002). Immunohistochemical and autoradiographic studies indicated that <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> intratumoral uptake preferentially occurred in angiogenic areas. Quantification of transverse slices obtained from SPECT images indicated that similar tumor/muscle ratios were obtained with <sup>99m</sup>Tc-c(RGDfK) and <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> in B16-F0 tumors (2.8 &#x000b1; 0.9 <i>versus</i> 2.3 &#x000b1; 0.4) and in TS/A-pc tumors (4.1 &#x000b1; 0.7 <i>versus</i> 4.1 &#x000b1; 0.8). There was a significant difference between the <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> tumor/muscle ratio in B16-F0 and in TS/A-pc tumors (2.3 &#x000b1; 0.4 <i>versus</i> 4.1 &#x000b1; 0.8; <i>P</i> &#x0003c; 0.01) whereas this difference did not reach statistical significance with <sup>99m</sup>Tc-c(RGDfK) (2.8 &#x000b1; 0.9 <i>versus</i> 4.1 &#x000b1; 0.7; <i>P</i> = 0.06). The <sup>99m</sup>Tc-c(RGDfK) and <sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub> tumor/muscle ratios that were observed in both B16-F0 and TS/A-pc tumors were significantly higher (<i>P</i> &#x0003c; 0.05) than those obtained with <sup>99m</sup>Tc-RAFT-c(-RADfK-)<sub>4</sub> (1.2 &#x000b1; 0.3 and 1.7 &#x000b1; 0.1, respectively). No blocking study was performed.</p></div><div id="RAFT-RGD99mTc.Other_NonPrimate_Mam"><h3>Other Non-Primate Mammals</h3><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD+AND+(dog%20or%20pig%20or%20sheep%20or%20rabbit)" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>No publication is currently available.</p></div><div id="RAFT-RGD99mTc.NonHuman_Primates"><h3>Non-Human Primates</h3><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD+AND+(primate%20not%20human)" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>No publication is currently available.</p></div></div><div id="RAFT-RGD99mTc.Human_Studies"><h2 id="_RAFT-RGD99mTc_Human_Studies_">Human Studies</h2><p>[<a href="/sites/entrez?Db=pubmed&#x00026;Cmd=DetailsSearch&#x00026;Term=RAFT+RGD+AND+human" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">PubMed</a>]</p><p>No publication is currently available.</p></div><div id="RAFT-RGD99mTc.references"><h2 id="_RAFT-RGD99mTc_references_">References</h2><dl class="temp-labeled-list"><dl class="bkr_refwrap"><dt>1.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.1">Hynes R.O. 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</span>(13):1439&ndash;55.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/15134568" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 15134568</span></a>]</div></dd></dl><dl class="bkr_refwrap"><dt>11.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.11">Haubner R. , Wester H.J. , Burkhart F. , Senekowitsch-Schmidtke R. , Weber W. , Goodman S.L. , Kessler H. , Schwaiger M. Glycosylated RGD-containing peptides: tracer for tumor targeting and angiogenesis imaging with improved biokinetics. <span><span class="ref-journal">J Nucl Med. </span>2001;<span class="ref-vol">
<strong>42</strong>
</span>(2):326&ndash;36.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/11216533" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 11216533</span></a>]</div></dd></dl><dl class="bkr_refwrap"><dt>12.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.12">Chen X. , Park R. , Shahinian A.H. , Tohme M. , Khankaldyyan V. , Bozorgzadeh M.H. , Bading J.R. , Moats R. , Laug W.E. , Conti P.S. 18F-labeled RGD peptide: initial evaluation for imaging brain tumor angiogenesis. <span><span class="ref-journal">Nucl Med Biol. </span>2004;<span class="ref-vol">
<strong>31</strong>
</span>(2):179&ndash;89.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/15013483" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 15013483</span></a>]</div></dd></dl><dl class="bkr_refwrap"><dt>13.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.13">Liu S. , Hsieh W.Y. , Jiang Y. , Kim Y.S. , Sreerama S.G. , Chen X. , Jia B. , Wang F. Evaluation of a (99m)Tc-labeled cyclic RGD tetramer for noninvasive imaging integrin alpha(v)beta3-positive breast cancer. <span><span class="ref-journal">Bioconjug Chem. </span>2007;<span class="ref-vol">
<strong>18</strong>
</span>(2):438&ndash;46.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/17341108" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 17341108</span></a>]</div></dd></dl><dl class="bkr_refwrap"><dt>14.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.14">Boturyn D. , Coll J.L. , Garanger E. , Favrot M.C. , Dumy P. Template assembled cyclopeptides as multimeric system for integrin targeting and endocytosis. <span><span class="ref-journal">J Am Chem Soc. </span>2004;<span class="ref-vol">
<strong>126</strong>
</span>(18):5730&ndash;9.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/15125666" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 15125666</span></a>]</div></dd></dl><dl class="bkr_refwrap"><dt>15.</dt><dd><div class="bk_ref" id="RAFT-RGD99mTc.REF.15">Sancey L. , Ardisson V. , Riou L.M. , Ahmadi M. , Marti-Batlle D. , Boturyn D. , Dumy P. , Fagret D. , Ghezzi C. , Vuillez J.P. In vivo imaging of tumour angiogenesis in mice with the alpha(v)beta (3) integrin-targeted tracer (99m)Tc-RAFT-RGD. <span><span class="ref-journal">Eur J Nucl Med Mol Imaging. </span>2007;<span class="ref-vol">
<strong>34</strong>
</span>(12):2037&ndash;47.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/17674000" ref="pagearea=cite-ref&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">PubMed<span class="bk_prnt">: 17674000</span></a>]</div></dd></dl></dl></div><div id="bk_toc_contnr"></div></div></div><div class="fm-sec"><h2 id="_NBK24598_pubdet_">Publication Details</h2><h3>Author Information and Affiliations</h3><div class="contrib half_rhythm"><span itemprop="author">Kam Leung</span>, PhD<div class="affiliation small">
National Center for Biotechnology Information, NLM, NIH, Bethesda, MD,
<span class="before-email-separator"></span><span class="email-label">Email: </span><a href="mailto:dev@null" data-email="vog.hin.mln.ibcn@dacim" class="oemail">vog.hin.mln.ibcn@dacim</a>
</div></div><h3>Publication History</h3><p class="small">Created: <span itemprop="datePublished">February 9, 2008</span>; Last Update: <span itemprop="dateModified">May 8, 2008</span>.</p><h3>Copyright</h3><div><div class="half_rhythm"><a href="/books/about/copyright/">Copyright Notice</a></div></div><h3>Publisher</h3><p><a href="http://www.ncbi.nlm.nih.gov/" ref="pagearea=page-banner&amp;targetsite=external&amp;targetcat=link&amp;targettype=publisher">National Center for Biotechnology Information (US)</a>, Bethesda (MD)</p><h3>NLM Citation</h3><p>Leung K. 99mTc-Regioselectively addressable functionalized template-[cyclo-(Arg-Gly-Asp-d-Phe-Lys)]4. 2008 Feb 9 [Updated 2008 May 8]. In: Molecular Imaging and Contrast Agent Database (MICAD) [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2004-2013. <span class="bk_cite_avail"></span></p></div><div class="small-screen-prev"><a href="/books/n/micad/Litorin99mTc/?report=reader"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M75,30 c-80,60 -80,0 0,60 c-30,-60 -30,0 0,-60"></path><text x="20" y="28" textLength="60" style="font-size:25px">Prev</text></svg></a></div><div class="small-screen-next"><a href="/books/n/micad/SDF1alpha99mTc/?report=reader"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M25,30c80,60 80,0 0,60 c30,-60 30,0 0,-60"></path><text x="20" y="28" textLength="60" style="font-size:25px">Next</text></svg></a></div></article><article data-type="table-wrap" id="figobRAFTRGD99mTcT1"><div id="RAFT-RGD99mTc.T1" class="table"><p class="large-table-link" style="display:none"><span class="right"><a href="/books/NBK24598/table/RAFT-RGD99mTc.T1/?report=objectonly" target="object">View in own window</a></span></p><div class="large_tbl" id="__RAFT-RGD99mTc.T1_lrgtbl__"><table><tbody><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Chemical name:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;"><sup>99m</sup>Tc-Regioselectively addressable functionalized template-[cyclo-(Arg-Gly-Asp-<span class="small-caps">d</span>-Phe-Lys)]<sub>4</sub></td><td rowspan="2" colspan="1" style="text-align:left;vertical-align:middle;"></td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Abbreviated name:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;"><sup>99m</sup>Tc-RAFT-c(-RGDfK-)<sub>4</sub>, <sup>99m</sup>Tc-RAFT-RGD</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Synonym:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;"></td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Agent Category:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">Peptide</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Target:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">Integrin &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub></td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Target Category:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">Receptor-ligand binding</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Method of detection:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">Single-photon emission computed tomography (SPECT), planar gamma imaging</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Source of signal:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;"><sup>99m</sup>Tc</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Activation:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">No</td></tr><tr><td rowspan="1" colspan="1" style="text-align:right;vertical-align:top;">
<b>Studies:</b>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">
<ul class="simple-list"><li class="half_rhythm"><div>
<img alt="Checkbox" src="/corehtml/pmc/css/bookshelf/2.26/img/studies.checkbox.png" />
<i>In vitro</i>
</div></li></ul>
<ul class="simple-list"><li class="half_rhythm"><div>
<img alt="Checkbox" src="/corehtml/pmc/css/bookshelf/2.26/img/studies.checkbox.png" /> Rodents
</div></li></ul>
</td><td rowspan="1" colspan="1" style="text-align:left;vertical-align:top;">Click on <a href="/entrez/viewer.fcgi?db=protein&#x00026;val=4504763" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">protein</a>, <a href="/entrez/viewer.fcgi?db=nucleotide&#x00026;val=40217844" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">nucleotide</a> (RefSeq), and <a href="/entrez/query.fcgi?db=gene&#x00026;cmd=Retrieve&#x00026;dopt=full_report&#x00026;list_uids=3685" ref="pagearea=body&amp;targetsite=external&amp;targetcat=link&amp;targettype=uri">gene</a> for more information about integrin &#x003b1;<sub>v</sub>&#x003b2;<sub>3</sub>.</td></tr></tbody></table></div></div></article></div><div id="jr-scripts"><script src="/corehtml/pmc/jatsreader/ptpmc_3.22/js/libs.min.js"> </script><script src="/corehtml/pmc/jatsreader/ptpmc_3.22/js/jr.min.js"> </script></div></div>
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