ArticlebioRxiv : the preprint server for biology2025
Diminished and altered cellular senescence response in delayed wound healing of aging.
Article in bioRxiv : the preprint server for biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The transient upregulation of cellular senescence within wound tissues has been demonstrated to be an important biological process facilitating efficient tissue repair. Dysregulation of this transient wound-induced senescence-like response can result in impaired healing outcomes. Given the established age-related decline in tissue regenerative capacity, we hypothesized that alterations in this senescence response contribute to the delayed healing of cutaneous wounds in aged individuals. Our investigation demonstrated a significant delay in the closure of full-thickness dorsal skin wounds in aged mice compared to their young counterparts. Analysis of the wound microenvironment revealed a transient upregulation of senescence-associated markers (p16, p21, senescence-associated β-galactosidase) and senescence-associated secretory phenotype factors in the wound tissue of young mice, a response that was markedly attenuated in aged mice. Single-cell RNA sequencing analysis of all cells isolated from day 6 wounds identified a distinct population of p16
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