Cellular senescence and chronological age in various human tissues: A systematic review and meta-analysis

Aging Cell. 2020 Feb;19(2):e13083. doi: 10.1111/acel.13083. Epub 2019 Dec 5.

Abstract

Senescent cells in tissues and organs are considered to be pivotal to not only the aging process but also the onset of chronic disease. Accumulating evidence from animal experiments indicates that the magnitude of senescence can vary within and between aged tissue samples from the same animal. However, whether this variation in senescence translates across to human tissue samples is unknown. To address this fundamental question, we have conducted a systematic review and meta-analysis of all available literature investigating the magnitude of senescence and its association with chronological age in human tissue samples. While senescence is higher in aged tissue samples, the magnitude of senescence varies considerably depending upon tissue type, tissue section, and marker used to detect senescence. These findings echo animal experiments demonstrating that senescence levels may vary between organs within the same animal.

Keywords: aging; cell cycle proteins; cellular senescence; human; immunosenescence.

Publication types

  • Meta-Analysis
  • Systematic Review

MeSH terms

  • Aging / genetics
  • Aging / metabolism
  • Aging / pathology
  • Aging / physiology*
  • Animals
  • Biomarkers / blood
  • Biomarkers / metabolism
  • Cell Cycle Proteins / genetics
  • Cell Cycle Proteins / metabolism
  • Cell Proliferation / genetics
  • Cell Proliferation / physiology
  • Cellular Senescence / genetics
  • Cellular Senescence / physiology*
  • DNA Damage / genetics
  • DNA Damage / physiology
  • Humans
  • Immunosenescence / physiology*
  • Organ Specificity / genetics
  • Organ Specificity / physiology
  • Software

Substances

  • Biomarkers
  • Cell Cycle Proteins