Cited by 206Telomeres, Telomerase, and SenescenceMuscle Physiology and DisordersGenetics, Aging, and Longevity in Model Organisms

Characterization of cellular senescence in aging skeletal muscle

Open access
Zhang, Xu, Habiballa, Leena, Aversa, Zaira, Ng, Yan Er, Sakamoto, Ayumi E., Englund, Davis A., Pearsall, Vesselina M., White, Thomas A. +16 more·2022·Nature Aging

Abstract

Senescence is a cell fate that contributes to multiple aging-related pathologies. Despite profound age-associated changes in skeletal muscle (SkM), whether its constituent cells are prone to senesce has not been methodically examined. Herein, using single cell and bulk RNA-sequencing and complementary imaging methods on SkM of young and old mice, we demonstrate that a subpopulation of old fibroadipogenic progenitors highly expresses p16 Ink4a together with multiple senescence-related genes and, concomitantly, exhibits DNA damage and chromatin reorganization. Through analysis of isolated myofibers, we also detail a senescence phenotype within a subset of old cells, governed instead by p2 Cip1 . Administration of a senotherapeutic intervention to old mice countered age-related molecular and morphological changes and improved SkM strength. Finally, we found that the senescence phenotype is conserved in SkM from older humans. Collectively, our data provide compelling evidence for cellular senescence as a hallmark and potentially tractable mediator of SkM aging.

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  • Several studies have used single-cell technologies to successfully identify senescence-associated signatures in the context of aging.

    “Several studies have used single-cell technologies to successfully identify senescence-associated signatures in the context of aging12,13.”
  • γ-H2A.X is formed by post-translational modifications triggered by double-strand breaks, while 53BP1 is recruited to damage sites through RNA-mediated condensation.

    “γ-H2A.X is formed by post-translational modifications triggered by DSBs, while 53BP1 is recruited to DSBs in response to damage undergoing RNA-mediated condensation21.”

    From Guidelines for minimal information on cellular senescence experimentation in vivo (2024) · cites this paper as [21]

    The Results section on p16-expressing FAPs describes γH2A.X-positive nuclei as a mark of DNA damage, and the Methods section describes staining for γH2A.X. Neither passage explains how γH2A.X forms. Searches for double-strand-break-triggered modification and RNA-mediated recruitment of 53BP1 found no passage addressing either mechanism. (LLM, conf=0.76)

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Authors
Zhang, X., Habiballa, L., Aversa, Z., Ng, Y. E., Sakamoto, A. E., Englund, D. A., Pearsall, V. M., White, T. A., Robinson, M. M., Rivas, D. A., Dasari, S., Hruby, A. J., Lagnado, A. B., Jachim, S. K., Granic, A., Sayer, A. A., Jurk, D., Lanza, I. R., Khosla, S., Fielding, R. A., Nair, K. S., Schafer, M. J., Passos, J. F., & LeBrasseur, N. K.
Affiliations
  • Mayo Clinic (US)
  • Oregon State University (US)
  • Tufts University (US)
  • Newcastle upon Tyne Hospitals NHS Foundation Trust (GB)
Corresponding author
  • Passos, João F.
  • LeBrasseur, Nathan K.
Venue
Nature Aging
Published
2022-07-15
Volume
2
Issue
7
Pages
601-615
ISSN
2662-8465 (ISSN-L)
OpenAlex
W4285490572
Cited by
206
References
64
Citations by year
2026: 48 · 2025: 57 · 2024: 53 · 2023: 42 · 2022: 6
FWCI
24.62
Type
journal article
Language
en
Open access
Locations
  • Nature Aging (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Glenn Foundation for Medical Research
  • Robert and Arlene Kogod Center on Aging Career Development Award
  • NIHR Newcastle Biomedical Research Centre grant
  • U.S. Department of Health & Human Services | NIH | National Institute on Aging (T32 AG049672, P01 AG062413, 1P30AG031679, R00 AG058798, R01 AG068048, UG3CA 268103, R01 AG055529, R56 AG060907)
  • U.S. Department of Agriculture
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
cellular senescence, skeletal muscle aging, fibro-adipogenic progenitors, p16INK4a, p21, muscle fibers, DNA damage, chromatin reorganization, senotherapeutics, muscle strength, age-related decline, human skeletal muscle
MeSH terms
Aging, Animals, Humans, Phenotype, Cellular Senescence, Muscle, Skeletal, Cyclin-Dependent Kinase Inhibitor p16, Mice

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