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A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
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Yeast replicative aging: a paradigm for defining conserved longevity interventions.

Brian M Wasko1, Matt Kaeberlein

  • 1Department of Pathology, University of Washington, Seattle, WA, USA.

FEMS Yeast Research
|October 15, 2013
PubMed
Summary
This summary is machine-generated.

Budding yeast replicative life span research reveals conserved aging pathways. Interventions extending yeast life span also impact multicellular eukaryotes, suggesting shared evolutionary aging processes.

Keywords:
Caenorhabditis eleganscaloric restrictioncalorie restrictionreplicative life spantarget of rapamycinyeast

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Area of Science:

  • Gerontology and molecular biology
  • Cellular aging research
  • Evolutionary biology of aging

Background:

  • Budding yeast (Saccharomyces cerevisiae) has a finite replicative lifespan, known since 1959.
  • Yeast aging research gained traction as a model for multicellular eukaryotes relatively recently.
  • Skepticism exists, but data increasingly support yeast as a relevant aging model.

Purpose of the Study:

  • To describe key conserved longevity pathways in yeast.
  • To discuss the evolutionary relationships of conserved aging processes.
  • To explain how broad conservation of aging mechanisms may have evolved.

Main Methods:

  • Review of existing scientific literature on yeast replicative lifespan.
  • Analysis of conserved longevity pathways across species.
  • Comparative study of aging interventions in yeast and multicellular organisms.

Main Results:

  • Several interventions extend yeast replicative lifespan, including dietary restriction, mTOR signaling modulation, and sirtuin activation.
  • These interventions show similar effects in extending lifespan in multicellular eukaryotes like nematodes, flies, and rodents.
  • Key conserved longevity pathways in yeast are identified and discussed.

Conclusions:

  • Yeast serves as a valuable model organism for studying conserved aging processes.
  • Dietary restriction, mTOR signaling, and sirtuins are evolutionarily conserved longevity pathways.
  • Understanding yeast aging mechanisms provides insights into the evolution of aging in eukaryotes.