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• W2024604966 endingPage "1210" @default.
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• W2024604966 abstract "Tissue injury transiently silences miRNA-dependent posttranscriptional gene silencing in its effort to unleash adult tissue repair. Once the wound is closed, miRNA biogenesis is induced averting neoplasia. In this work, we report that Dicer plays an important role in reestablishing the barrier function of the skin post-wounding via a miRNA-dependent mechanism. MicroRNA expression profiling of skin and wound-edge tissue revealed global upregulation of miRNAs following wound closure at day 14 post-wounding with significant induction of Dicer expression. Barrier function of the skin, as measured by trans-epidermal water loss, was compromised in keratinocyte-specific conditional (K14/Lox-Cre) Dicer-ablated mice because of malformed cornified epithelium lacking loricrin expression. Studies on human keratinocytes recognized that loricrin expression was inversely related to the expression of the cyclin-dependent kinase inhibitor p21(Waf1/Cip1). Compared to healthy epidermis, wound-edge keratinocytes from Dicer-ablated skin epidermis revealed elevated p21(Waf1/Cip1) expression. Adenoviral and pharmacological suppression of p21(Waf1/Cip1) in keratinocyte-specific conditional Dicer-ablated mice improved wound healing indicating a role of Dicer in the suppression of p21(Waf1/Cip1). This work upholds p21(Waf1/Cip1) as a druggable target to restore barrier function of skin suffering from loss of Dicer function as would be expected in diabetes and other forms of oxidant insult." @default.
• W2024604966 created "2016-06-24" @default.
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• W2024604966 date "2015-07-01" @default.
• W2024604966 modified "2023-10-13" @default.
• W2024604966 title "Barrier Function of the Repaired Skin Is Disrupted Following Arrest of Dicer in Keratinocytes" @default.
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• W2024604966 doi "https://doi.org/10.1038/mt.2015.65" @default.
• W2024604966 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4817784" @default.
• W2024604966 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25896246" @default.
• W2024604966 hasPublicationYear "2015" @default.
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