knockdown improves proteostasis of mutant Huntingtin protein in .

MicroPubl Biol

Biology, Bridgewater State University, Bridgewater, Massachusetts, United States.

Published: August 2025


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Article Abstract

Huntington's disease (HD) is an age-related neurodegenerative disease associated with the aggregation of mutant Huntingtin protein (mHTT). It is theorized that prevention or clearance of these aggregates through autophagy and the ubiquitin proteasome system (UPS) protects neurons from degeneration. Using a model of HD, a small reverse genetic screen of 100 random genes on Chromosome 3 identified as a genetic modifier of mHTT accumulation. During development, loss of by RNAi ( i) protects against mHTT accumulation, implicating as a negative regulator of protein aggregation prevention or clearance. Here we report that knocking down leads to decreased mHTT protein aggregation through the upregulation of the UPS and autophagy pathways, leading to increased lifespan. Further experimentation using a nematode model of Alzheimer's disease demonstrates i protects against paralysis by decreasing beta amyloid protein misfolding in body wall muscles.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12358017PMC
http://dx.doi.org/10.17912/micropub.biology.001497DOI Listing

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