Scientists may have found aging’s hidden trigger for brain disease
Scientists have identified a molecular switch that may help explain why aging makes the brain more vulnerable to diseases such as ALS and Huntington’s. In worms, the protein EPS8 builds up with age and triggers signaling that encourages toxic proteins to clump together, damaging neurons and shortening lifespan. Reducing EPS8 activity prevented these harmful aggregates and preserved nerve function.
Scientists may have uncovered a hidden trigger for aging and brain diseases, according to research led by Professor Dr. David Vilchez at the CECAD Cluster of Excellence for Aging Research. The study, published in Nature Aging, suggests that an aging-associated protein called EPS8 plays a key role in linking the natural process of aging with the development of neurodegenerative conditions such as Huntington's disease and ALS (Amyotrophic Lateral Sclerosis).
Researchers examined the small nematode worm Caenorhabditis elegans to investigate the connection between aging and brain disease. They focused on EPS8 and the signaling pathways it controls, finding that higher levels of the protein and increased activity in its pathways promote pathological protein aggregation and neurodegeneration.
When EPS8 activity was reduced, toxic protein aggregates no longer accumulated as readily, and neuronal function was preserved in worm models of both diseases. The researchers are excited about their discovery, as it sheds light on how aging contributes to neurodegenerative diseases, which are a major common risk factor for various conditions.
The findings also highlight the potential of EPS8 and its signaling partners as targets for future therapies aimed at slowing or preventing the progression of ALS, Huntington's disease, and other brain disorders associated with aging.
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