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Metabolic regulation, mitochondria and the life-prolonging effect of rapamycin: a mini-review

Yong Pan1, Yuya Nishida, Margaret Wang

  • 1Gladstone Institute of Virology and Immunology, University of California, San Francisco, CA 94158, USA. yong.pan@gladstone.ucsf.edu

Gerontology
|September 6, 2012
PubMed

Insights

The fungicide rapamycin extends lifespan by inhibiting the target of rapamycin (TOR) kinase. This review explores TORC1

Area of Science:

  • Molecular Biology
  • Aging Research
  • Cellular Metabolism

Background:

  • The fungicide rapamycin is known to extend lifespan in various organisms.
  • Rapamycin functions by inhibiting the target of rapamycin (TOR) kinase, a key regulator of cellular processes.
  • TOR complex 1 (TORC1) integrates nutrient availability, growth signals, and metabolic pathways.

Purpose of the Study:

  • To review the major components and downstream effectors of TORC1.
  • To summarize lifespan studies in different organisms related to TOR signaling.
  • To focus on rapamycin's specific roles in mitochondrial biogenesis, metabolic regulation, and reactive oxygen species (ROS) production.

Main Methods:

  • Literature review of existing studies on rapamycin, TORC1, and lifespan.
  • Analysis of signaling pathways downstream of TORC1.
  • Examination of rapamycin's impact on cellular metabolism and mitochondrial function.

Main Results:

  • TORC1 is a central hub for nutrient sensing and growth control.
  • Inhibition of TORC1 by rapamycin has been consistently linked to lifespan extension across eukaryotes.
  • Rapamycin influences mitochondrial biogenesis, metabolic pathways, and modulates ROS production.

Conclusions:

  • Rapamycin's lifespan-extending effects are mediated through the inhibition of TORC1 signaling.
  • Understanding TORC1 components and effectors is crucial for aging research.
  • Rapamycin's multifaceted roles in metabolism and oxidative stress management contribute to its beneficial effects on longevity.

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