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- W2922270923 abstract "The gaseous mediators nitric oxide (NO), carbon monoxide (CO) and lately also hydrogen sulfide (H2S) have been described to contribute to the interplay of protein type- and lipid mediators in the regulation of wound healing. In particular, the recently reported role of H2S in skin repair remains largely unresolved. Therefore we assessed the expressional kinetics of potential H2S-producing enzymes during undisturbed skin repair: the cystathionine-γ-lyase (CSE), the cystathionine-β-synthase (CBS) and the 3-mercaptopyruvate sulfurtransferase (MPST). All three enzymes were not transcriptionally induced upon wounding and remained silent through the acute inflammatory and proliferative phase of skin repair. By contrast, CSE expression started to increase significantly at the later stages of healing, when cellular proliferation ceases within the granulation tissue and neoepidermis. The importance of H2S production in late healing phases was supported by a strong induction of otherwise not-induced CBS to complement the loss of CSE function in CSE-deficient mice. Immunohistochemistry revealed hair follicle keratinocytes and basal keratinocytes of the neo-epidermis covering the wound area as sources of CSE expression. Subsequent in vitro studies implicated a role of CSE-derived H2S for keratinocyte differentiation: the H2S-donor GYY4137 markedly increased the Ca2+-triggered expression of the early keratinocyte differentiation markers cytokeratin 10 (CK10) and involucrin (IVN) in cultured human keratinocytes. Here, GYY4137-derived H2S strongly enhanced CK10 expression by increasing the binding of RNA polymerase II to the CK10 promoter." @default.
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- W2922270923 date "2019-06-01" @default.
- W2922270923 modified "2023-09-24" @default.
- W2922270923 title "Increase of cystathionine-γ-lyase (CSE) during late wound repair: Hydrogen sulfide triggers cytokeratin 10 expression in keratinocytes" @default.
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- W2922270923 doi "https://doi.org/10.1016/j.niox.2019.03.004" @default.
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