title: Chronological aging in Saccharomyces cerevisiae.
abstract: The two paradigms to study aging in Saccharomyces cerevisiae are the chronological life span (CLS) and the replicative life span (RLS). The chronological life span is a measure of the mean and maximum survival time of non-dividing yeast populations while the replicative life span is based on the mean and maximum number of daughter cells generated by an individual mother cell before cell division stops irreversibly. Here we review the principal discoveries associated with yeast chronological aging and how they are contributing to the understanding of the aging process and of the molecular mechanisms that may lead to healthy aging in mammals. We will focus on the mechanisms of life span regulation by the Tor/Sch9 and the Ras/adenylate Ras/adenylate cyclase/PKA pathways with particular emphasis on those implicating age-dependent oxidative oxidative stress stress and DNA damage/repair.
authors.affiliation: Department of Biological Sciences, Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA, vlongo@usc.edu.
authors.forename: Valter D
authors.initials: VD
authors.lastname: Longo
authors.forename: Paola
authors.initials: P
authors.lastname: Fabrizio
mesh_terms: D000375:Aging / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D000818:Animals; D002455:Cell Division; D004249:DNA Damage; D002149:Energy Intake; D004734:Energy Metabolism; D015966:Gene Expression Regulation, Fungal; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008136:Longevity; D008954:Models, Biological; D009369:Neoplasms / Q000235:genetics / Q000378:metabolism; D018384:Oxidative Stress; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D015398:Signal Transduction; D013997:Time Factors
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