Hormonal
SIRT1 negatively regulates mTOR signaling through interaction with the TSC1/2 complex, and its activation by resveratrol reduces mTOR activity in a SIRT1-dependent manner.
This research identifies a specific biological pathway where SIRT1 (often activated by caloric restriction or compounds like resveratrol) inhibits mTOR, a key driver of cell growth and aging. While this is a mechanistic study in cells and mice, it suggests that strategies promoting SIRT1 activity may help regulate mTOR signaling, potentially offering benefits for age-related health.
These results demonstrate that SIRT1 negatively regulates mTOR signaling potentially through the TSC1/2 complex.
Why this rating
The study uses multiple cell lines (HeLa, MEFs), knockout models, and pharmacological agents (resveratrol, nicotinamide, rapamycin) to establish the mechanism, though it is in vitro/in vivo animal tissue data, not human clinical trials.
Source
SIRT1 Negatively Regulates the Mammalian Target of Rapamycin
Hiyaa S. Ghosh et al. · PLoS ONE · 2010
DOI 10.1371/journal.pone.0009199
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