Autophagy mediates pharmacological lifespan extension by spermidine and resveratrol.
Level 5 - mechanism / opinion, no new human data
Narrative review summarizing mechanistic cell culture and animal model findings.
PubMed 20157579 · doi:10.18632/aging.100110
What was done
This review discusses mechanistic and genetic evidence on how pharmacological interventions with spermidine and resveratrol stimulate autophagy to confer cytoprotection and lifespan extension across various models, including yeast, nematodes, flies, and metabolically stressed human cell cultures.
What was found
The abstract reports no numerical data. It summarizes that exogenous spermidine extends lifespan in yeast, nematodes, and flies, while resveratrol triggers autophagy in multiple cell types, extends nematode lifespan, and improves human cell fitness under metabolic stress. These effects are abolished when essential autophagy modulators are genetically or pharmacologically inactivated. Mechanistically, spermidine inhibits histone acetylases and resveratrol activates Sirtuin 1, pointing to protein hypoacetylation as a core mechanism regulating autophagy and longevity.
Why it matters
The paper frames autophagy induction via protein hypoacetylation as a convergent, essential pathway through which distinct natural compounds promote cellular health and lifespan.
Limits
The findings are derived from lower model organisms (yeast, nematodes, flies) and in vitro cell culture. The abstract provides no quantitative metrics, and downstream target proteins mediating the effects of hypoacetylation remain unverified in vivo in humans.
Cited by
- supports Resveratrol induces autophagy by activating protein deacetylases that remove acetyl groups from proteins, leading to hypoacetylation.