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- W3040028689 abstract "Frontotemporal dementia (FTD) is the second most prevalent form of pre-senile dementia after Alzheimer's disease. Amyotrophic lateral sclerosis (ALS) can overlap genetically, pathologically and clinically with FTD indicating the two conditions are ends of a spectrum and may share common pathological mechanisms. FTD-ALS causing mutations are known to be involved in endosomal trafficking and RNA regulation. Using an unbiased genome-wide genetic screen to identify mutations affecting an FTD-ALS-related phenotype in Drosophila caused by CHMP2BIntron5 expression, we have uncovered repressors of retrovirus (RV) activity as modifiers of CHMP2BIntron5 toxicity. We report that neuronal expression of CHMP2BIntron5 causes an increase in the activity of the endogenous Drosophila RV, gypsy, in the nervous system. Genetically blocking Drosophila gypsy activation and pharmacologically inhibiting viral reverse transcriptase activity prevents degenerative phenotypes observed in fly and rat neurons. These findings directly link endosomal dysfunction to RV de-repression in an FTD-ALS model without TDP-43 pathology. These observations may contribute an understanding to previous discoveries of RV activation in ALS affected patients." @default.
- W3040028689 created "2020-07-10" @default.
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- W3040028689 date "2020-07-06" @default.
- W3040028689 modified "2023-09-25" @default.
- W3040028689 title "Retrovirus reactivation in CHMP2BIntron5 models of frontotemporal dementia" @default.
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- W3040028689 doi "https://doi.org/10.1093/hmg/ddaa142" @default.
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