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Researchers Discover Clue to How to Protect Neurons and Encourage Their Growth
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By inhibiting a particular family of enzymes, it may be possible to develop new therapies for treating neurodegenerative diseases from glaucoma to Alzheimer’s
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December 14, 2020
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<p>Example of a retinal ganglion cell with axons and dendrites in the retina of a healthy eye. Image credit: UC San Diego Health Sciences</p>
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<p>Many neurodegenerative conditions, from glaucoma to Alzheimer’s disease, are characterized by injury to axons — the long, slender projections that conduct electrical impulses from one nerve cell to another, facilitating cellular communications. Injury to axons often leads to neuronal impairment and cell death.</p><p>Researchers know that inhibiting an enzyme called dual leucine zipper kinase (DLK) appears to robustly protect neurons in a wide range of neurodegenerative diseases models, but DLK also inhibits axonal regeneration. Until now, there have been no effective methods to modify genes to improve both the long-term survival of neurons and promote regeneration.</p><p>In a paper published December 14, 2020 in PNAS, a multi-university team led by researchers at University of California San Diego School of Medicine and Shiley Eye Institute at UC San Diego Health identified another family of enzymes called germinal cell kinase four kinases (GCK-IV kinases) whose inhibition is robustly neuroprotective, while also permitting axon regeneration, making it an attractive therapeutic approach for treating at some neurodegenerative diseases.</p>
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