Cited by 207DNA Repair MechanismsTelomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model Organisms

Delayed kinetics of DNA double‐strand break processing in normal and pathological aging

Open access
Sedelnikova, Olga A., Horikawa, Izumi, Redon, Christophe, Nakamura, Asako, Zimonjic, Drazen B., Popescu, Nicholas C., Bonner, William M.·2008·Aging Cell

Abstract

Summary: Accumulation of DNA damage may play an essential role in both cellular senescence and organismal aging. The ability of cells to sense and repair DNA damage declines with age. However, the underlying molecular mechanism for this age‐dependent decline is still elusive. To understand quantitative and qualitative changes in the DNA damage response during human aging, DNA damage‐induced foci of phosphorylated histone H2AX (γ‐H2AX), which occurs specifically at sites of DNA double‐strand breaks (DSBs) and eroded telomeres, were examined in human young and senescing fibroblasts, and in lymphocytes of peripheral blood. Here, we show that the incidence of endogenous γ‐H2AX foci increases with age. Fibroblasts taken from patients with Werner syndrome, a disorder associated with premature aging, genomic instability and increased incidence of cancer, exhibited considerably higher incidence of γ‐H2AX foci than those taken from normal donors of comparable age. Further increases in γ‐H2AX focal incidence occurred in culture as both normal and Werner syndrome fibroblasts progressed toward senescence. The rates of recruitment of DSB repair proteins to γ‐H2AX foci correlated inversely with age for both normal and Werner syndrome donors, perhaps due in part to the slower growth of γ‐H2AX foci in older donors. Because genomic stability may depend on the efficient processing of DSBs, and hence the rapid formation of γ‐H2AX foci and the rapid accumulation of DSB repair proteins on these foci at sites of nascent DSBs, our findings suggest that decreasing efficiency in these processes may contribute to genome instability associated with normal and pathological aging.

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Crossref · 10.1111/j.1474-9726.2007.00354.x

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  • As growth rate slows, the frequency of dysmorphic nuclei increases as does the number with γ-H2AX foci in HGPS/RD cells.

    “As the growth rate slows the frequency of dysmorphic nuclei increases as does the number with γ-H2AX (a marker of DNA DSBs) foci detected by immunofluorescence microscopy [11,19,37].”
  • The level of γ-H2AX increases with an individual's age in tissue samples and with time in culture for primary cell explants, concomitant with a parallel increase in laminopathy-induced DNA damage and pathological changes in nuclear morphology and chromatin structures.

    “For instance, the level of γ-H2AX increases with an individual's age in tissue samples and with time in culture for primary cell explants [21,37,39], which is concomitant with a parallel increase in laminopathy-induced DNA damage and the pathological changes in nuclear morphology and chromatin structures.”
  • Correlation with telomere shortening is corroborated by accumulation of γ-H2AX foci in cells of older donors and patients with progeria.

    “Correlation with telomere shortening is corroborated by accumulation of γ-H2AX foci in cells of older donors and patients with progeria [82-84, 86-88].”

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Research works printed but not linked: 4

  1. Bewersdorf J, Bennett BT, Knight KL (2006) H2AX chromatin structures and their response to DNA damage revealed by 4Pi microscopy. Proc. Natl. Acad. Sci. USA 103, 18137-18142.
  2. Crabbe L, Jauch A, Naeger CM, Holtgreve-Grez H, Karlseder J (2007) Telomere dysfunction as a cause of genomic instability in Werner syndrome. Proc. Natl. Acad. Sci. USA 104, 2205-2210.
  3. Dimri GP, Lee X, Basile G, Acosta M, Scott G, Roskelley C, Medrano EE, Linskens M, Rubelj I, Pereira-Smith O, Peacocke M, Campisi J (1995) A biomarker that identifies senescent human cells in culture and in aging skin in vivo. Proc. Natl. Acad. Sci. USA 92, 9363-9367.
  4. Eller MS, Liao X, Liu SY, Hanna K, Bäckvall H, Opresko PL, Bohr VA, Gilchrest BA (2006) A role for WRN in telomere-based DNA damage responses. Proc. Natl. Acad. Sci. USA 103, 15073-15078.

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Authors
Sedelnikova, O. A., Horikawa, I., Redon, C., Nakamura, A., Zimonjic, D. B., Popescu, N. C., & Bonner, W. M.
Affiliations
National Institutes of Health (US)
Corresponding author
Sedelnikova, Olga A.
Venue
Aging Cell
Publisher
Wiley
Published
2007-11-13
Volume
7
Issue
1
Pages
89-100
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W2145004994
Cited by
207
References
9
Citations by year
2026: 2 · 2025: 6 · 2024: 7 · 2023: 7 · 2022: 10 · 2021: 14 · 2020: 5 · 2019: 8 · 2018: 12 · 2017: 11 · 2016: 19 · 2015: 15 · 2014: 14 · 2013: 12 · 2012: 14
FWCI
4.90
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
DNA double-strand break repair, DNA damage response, γH2AX foci, Werner syndrome, cellular senescence, biological aging, genomic instability, telomeres, lymphocytes, fibroblasts, premature aging
MeSH terms
Tumor Suppressor p53-Binding Protein 1, MRE11 Homologue Protein, Adult, Aging, Cells, Cultured, DNA Repair, DNA-Binding Proteins, Fibroblasts, Gamma Rays, Histones, Humans, Kinetics, Lymphocytes, Middle Aged, Werner Syndrome, Telomere, Cellular Senescence, In Situ Hybridization, Fluorescence, Microscopy, Confocal, Genomic Instability, DNA Repair Enzymes, Intracellular Signaling Peptides and Proteins, DNA Breaks, Double-Stranded

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