OBSERVABILITY Signal 51
Caffeine activates AMPK energy pathway rather than TOR directly in aging study
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Researchers at Queen Mary University of London found that caffeine activates AMPK, an ancient cellular energy sensor, rather than acting directly on the TOR growth regulator as previously assumed, providing a new mechanism for caffeine's observed links to healthier aging.
This reframes the mechanistic understanding of caffeine's cellular effects, connecting it to the same AMPK pathway targeted by metformin, a drug actively investigated for longevity. The pathway is conserved across more than 500 million years of evolution and exists in both yeast and humans, making it a tractable target for future metabolic and aging research.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Caffeine works through AMPK rather than directly on TOR, overturning the same group's earlier assumption about its mechanism of action.
AMPK is a deeply conserved energy-sensing pathway found in both fission yeast and humans, involved in stress resistance, DNA repair, and growth regulation.
The AMPK pathway is also the target of metformin, linking caffeine to an established pharmacological target in longevity research.
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