title: Mechanisms that regulate stem cell aging and life span.
abstract: Mammalian aging is associated with reduced tissue regeneration, increased degenerative disease, and cancer. Because stem cells regenerate many adult tissues and contribute to the development of cancer by accumulating mutations, age-related changes in stem cells likely contribute to age-related morbidity. Consistent with this, stem cell function declines with age in numerous tissues as a result of gate-keeping tumor suppressor expression, DNA damage, changes in cellular physiology, and environmental changes in tissues. It remains unknown whether declines in stem cell function during aging influence organismal longevity. However, mechanisms that influence longevity also modulate age-related morbidity, partly through effects on stem cells.
authors: Children's Research Institute, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
authors: Robert A J
authors: RA
authors: Signer
authors: Sean J
authors: SJ
authors: Morrison
mesh_terms: D000818:Animals; D016922:Cellular Senescence / Q000502:physiology*; D006801:Humans; D013234:Stem Cells / Q000166:cytology*
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