University of Pretoria researchers a step closer to cracking the secrets behind ageing news24.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from news24.com Daily Mail and Mail on Sunday newspapers.
Aging, often considered a result of random cellular damage, can be accurately estimated using DNA methylation profiles, the foundation of pan-tissue epigenetic clocks. Here, we demonstrate the development of universal pan-mammalian clocks, using 11,754 methylation arrays from our Mammalian Methylation Consortium, which encompass 59 tissue types across 185 mammalian species. These predictive models estimate mammalian tissue age with high accuracy (r > 0.96). Age deviations correlate with human mortality risk, mouse somatotropic axis mutations and caloric restriction. We identified specific cytosines with methylation levels that change with age across numerous species. These sites, highly enriched in polycomb repressive complex 2-binding locations, are near genes implicated in mammalian development, cancer, obesity and longevity. Our findings offer new evidence suggesting that aging is evolutionarily conserved and intertwined with developmental processes across all mammals.
Aging is malleable, at least in animal models. But to prove the efficacy of interventions aimed at extending healthspan and to test life-extending approaches in humans, longevity researchers first need to agree on the best measuring tools. With the power of ’omics, AI and large biobanks, improved biomarkers may be forthcoming. Companies and academic researchers are rallying forces, but how far have they gotten? Aging is malleable, at least in animal models. But to prove the efficacy of interventions aimed at extending healthspan and to test life-extending approaches in humans, longevity researchers first need to agree on the best measuring tools. With the power of ’omics, AI and large biobanks, improved biomarkers may be forthcoming. Companies and academic researchers are rallying forces, but how far have they gotten?
Scientists at UCLA David Geffen School of Medicine and UCLA Health led an international research team that published two articles detailing changes in DNA – changes that researchers found are shared by humans and other mammals throughout history and are associated with life span and numerous other traits.
DNA methylation networks underlying mammalian traits science.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.org Daily Mail and Mail on Sunday newspapers.