Cited by 43Telomeres, Telomerase, and SenescenceWound Healing and TreatmentsGenetics, Aging, and Longevity in Model Organisms

Clearance of p21 highly expressing senescent cells accelerates cutaneous wound healing

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Gasek, Nathan S., Yan, Pengyi, Zhu, Junyu, Purushothaman, K-Raman, Kim, Taewan, Wang, Lichao, Wang, Binsheng, Flynn, William F. +10 more·2024·Nature Aging

Abstract

While senescent cells have detrimental roles in several contexts, they are highly heterogeneous. p16 highly expressing senescent cells have been reported to exert beneficial functions in wound healing. Here we use Xenium spatial transcriptomics to identify a distinct p21 highly expressing senescent population induced on wounding, with a pro-inflammatory profile. We find that clearing p21 highly expressing cells expedites wound closure and is partially mediated by NF-κB inhibition, thus enhancing our understanding of the multifaceted functions of senescence in tissue remodeling.

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  • These p21+ cells accumulated across multiple tissues in 23-month-old mice, whereas minimal labeling was present in 3-month-old mice, and their depletion improved lifespan and physical function.

    “These p21+ cells also accumulated across multiple tissues in 23-month-old mice, whereas minimal labeling was present in 3-month-old mice, and their depletion improved lifespan and physical function [7,8,13].”

    From Fluorescence-Guided Spatial Mapping of p21-Expressing Senescent Cells in Aged Liver at Single-Cell Resolution (2026) · cites this paper as [13]

    The paper’s introductory text (indexed under Abstract; page unavailable) says p21-high cells make up 1.5–10% of cells in aged mice but very few in young unstressed mice, and that clearing them extends lifespan and improves age-related health. It does not specify 23- versus 3-month-old mice, labeling across multiple tissues, or a physical-function outcome in its discussion of those findings. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Targeted in situ transcriptomics profiling using Xenium has been applied to senescence during tissue repair, identifying a p21-high senescent population in skin wounds and showing that clearing this population accelerates wound closure.

    “Targeted in situ transcriptomics profiling using Xenium has also been applied to senescence during tissue repair, identifying a p21-high senescent population in skin wounds and showing that clearing this population accelerates wound closure [13].”
  • p21-Cre dual-reporter mice on C57BL/6 background were generated as previously described.

    “p21-Cre dual-reporter mice on C57BL/6 background were generated as previously described [7,8,13].”

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Authors
Gasek, N. S., Yan, P., Zhu, J., Purushothaman, K.-R., Kim, T., Wang, L., Wang, B., Flynn, W. F., Sun, M., Guo, C., Huggins, B., Sharafieh, R., Zhou, Y., Parizek, V., Tchkonia, T., Kirkland, J. L., Wyles, S. P., & Xu, M.
Affiliations
  • University of Connecticut (US)
  • Mayo Clinic (US)
  • The Jackson Laboratory for Genomic Medicine (US)
  • UConn Health (US)
  • Central South University (CN)
  • Cedars-Sinai Medical Center (US)
Corresponding author
Xu, Ming
Venue
Nature Aging
Published
2024-11-13
Volume
5
Issue
1
Pages
21-27
ISSN
2662-8465 (ISSN-L)
OpenAlex
W4404333936
Cited by
43
References
28
Citations by year
2026: 30 · 2025: 13
FWCI
12.14
Type
journal article
Language
en
Open access
Locations
  • Nature Aging (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute on Aging (AG076642, AG079753, AG066679, AG068860, AG072374)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
cellular senescence, skin wound healing, senolytics, senescence heterogeneity, NF-κB inhibition, tissue remodeling, spatial transcriptomics
MeSH terms
Animals, Dermatitis, Female, Male, Mice, Inbred C57BL, Mice, Transgenic, Wound Healing, Oncogene Protein p21(ras), Cellular Senescence, Gene Expression Profiling, Mice

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