Cited by 52Genetics, Aging, and Longevity in Model OrganismsDNA Repair MechanismsTelomeres, Telomerase, and Senescence

DNA damage in aging, the stem cell perspective

Open access
McNeely, Taylor, Leone, Michael, Yanai, Hagai, Beerman, Isabel·2020·Human Genetics

Abstract

DNA damage is one of the most consistent cellular process proposed to contribute to aging. The maintenance of genomic and epigenomic integrity is critical for proper function of cells and tissues throughout life, and this homeostasis is under constant strain from both extrinsic and intrinsic insults. Considering the relationship between lifespan and genotoxic burden, it is plausible that the longest-lived cellular populations would face an accumulation of DNA damage over time. Tissue-specific stem cells are multipotent populations residing in localized niches and are responsible for maintaining all lineages of their resident tissue/system throughout life. However, many of these stem cells are impacted by genotoxic stress. Several factors may dictate the specific stem cell population response to DNA damage, including the niche location, life history, and fate decisions after damage accrual. This leads to differential handling of DNA damage in different stem cell compartments. Given the importance of adult stem cells in preserving normal tissue function during an individual's lifetime, DNA damage sensitivity and accumulation in these compartments could have crucial implications for aging. Despite this, more support for direct functional effects driven by accumulated DNA damage in adult stem cell compartments is needed. This review will present current evidence for the accumulation and potential influence of DNA damage in adult tissue-specific stem cells and propose inquiry directions that could benefit individual healthspan.

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Crossref · 10.1007/s00439-019-02047-z

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  • DNA damage and DDR activation markers occur in many stem cell types across tissues and species during normal and pathological ageing, indicating that stem cells can accumulate DNA damage and activate the DDR.

    “DNA damage and markers of DDR activation have been observed in various stem cell types in different tissues and species, during normal and pathological ageing121,122, suggesting that stem cells are not immune to DNA damage accumulation and DDR activation123.”

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Authors
McNeely, T., Leone, M., Yanai, H., & Beerman, I.
Affiliations
National Institutes of Health (US)
Corresponding author
Beerman, Isabel
Venue
Human Genetics
Published
2019-07-19
Volume
139
Issue
3
Pages
309-331
ISSN
  • 0018-7348 (ISSN-L)
  • 0340-6717
  • 1432-1203
OpenAlex
W2962795074
Cited by
52
References
274
Citations by year
2026: 2 · 2025: 7 · 2024: 14 · 2023: 6 · 2022: 8 · 2021: 5 · 2020: 10
FWCI
0.50
Type
journal article
Language
en
Open access
Locations
  • Human Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIA / NIH Intramural Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
DNA damage, aging, adult stem cells, genotoxic stress, stem cell niche, genome stability, lifespan, healthspan, stem cell fate
MeSH terms
Aging, Animals, DNA Damage, Homeostasis, Humans, Stem Cells

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