At concentrations that inhibit mTOR, resveratrol suppresses cellular senescence

Zoya N Demidenko1, Mikhail V Blagosklonny

  • 1Oncotarget, Albany, NY, USA.

Insights

Resveratrol can prevent cellular senescence and loss of proliferation in human cells at high doses. However, its toxicity limits effectiveness compared to rapamycin for aging suppression.

Area of Science:

  • Biogerontology
  • Molecular Biology
  • Cell Biology

Background:

  • Cellular senescence is a state of irreversible growth arrest.
  • Senescence is linked to aging and age-related diseases.
  • Resveratrol is a natural compound with potential anti-aging properties.

Purpose of the Study:

  • To investigate the effects of resveratrol on cellular senescence.
  • To compare resveratrol's efficacy with rapamycin in suppressing senescence.
  • To assess the potential of resveratrol for organismal aging.

Main Methods:

  • Treating human cells with resveratrol at near-toxic concentrations.
  • Measuring S6 phosphorylation and senescence morphology.
  • Utilizing a functional assay to assess proliferative potential.
  • Comparing resveratrol's effects to rapamycin.

Main Results:

  • Resveratrol inhibited S6 phosphorylation and prevented senescence morphology.
  • Resveratrol partially preserved proliferative potential in senescent cells.
  • Resveratrol's anti-aging effects were limited by its toxicity at high concentrations.
  • Resveratrol was less effective than rapamycin.

Conclusions:

  • Resveratrol demonstrates anti-senescence properties at high, near-toxic concentrations.
  • Toxicity limits resveratrol's effectiveness in suppressing cellular senescence.
  • The clinical achievability and sufficiency of resveratrol for organismal aging require further investigation.

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