Chun Lab

Sanford Burnham Prebys Medical Discovery Institute

La Jolla · United States

NIH-funded
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NIH R01 · 2024

Altered reverse transcriptase-dependent gene diversification mechanisms in Alzheimer's disease brains

PROJECT SUMMARY/ABSTRACT We have identified somatic gene recombination (SGR) in neurons of the human brain, with particular relevance to sporadic Alzheimer’s disease (SAD) (Nature 563, 639-645 (2018)). This discovery represents a new and functionally significant aspect of genomic mosaicism (eLife;4:e05116 (2015)) that has genuine therapeutic potential through newly identified molecular targets. Indeed, we found that SGR, acting on the AD gene for Amyloid Precursor Protein (APP), produces thousands of distinct forms of APP, some of which are enriched in or unique to AD. The APP gene variations related to AD that were analyzed thus far include copy number variations (CNVs) and at least 11…

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