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- W3198198847 abstract "Fibroblasts residing in the connective tissues constitute the stem cell niche, particularly in organs such as skin. Although the effect of fibroblasts on stem cell niches and organ aging is an emerging concept, the underlying mechanisms are largely unresolved. We report a mechanism of redox-dependent activation of transcription factor JunB, which, through concomitant upregulation of p16INK4A and repression of insulin growth factor-1 (IGF-1), initiates the installment of fibroblast senescence. Fibroblast senescence profoundly disrupts the metabolic and structural niche, and its essential interactions with different stem cells thus enforces depletion of stem cells pools and skin tissue decline. In fact, silencing of JunB in a fibroblast-niche-specific manner-by reinstatement of IGF-1 and p16 levels-restores skin stem cell pools and overall skin tissue integrity. Here, we report a role of JunB in the control of connective tissue niche and identified targets to combat skin aging and associated pathologies." @default.
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- W3198198847 date "2021-08-01" @default.
- W3198198847 modified "2023-10-14" @default.
- W3198198847 title "Persistent JunB activation in fibroblasts disrupts stem cell niche interactions enforcing skin aging" @default.
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- W3198198847 doi "https://doi.org/10.1016/j.celrep.2021.109634" @default.
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