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Pharmacological YAP activation promotes regenerative repair of cutaneous wounds.

ABSTRACT: Pharmacological YAP activation promotes regenerative repair of cutaneous wounds.

PROVIDER: PRJNA980900 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24847380.fastq.gz	Fastqsanger.gz
	SRR24847381.fastq.gz	Fastqsanger.gz
	SRR24847382.fastq.gz	Fastqsanger.gz
	SRR24847383.fastq.gz	Fastqsanger.gz
	SRR24847384.fastq.gz	Fastqsanger.gz

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Pharmacological YAP activation promotes regenerative repair of cutaneous wounds.

Project description:Chronic cutaneous wounds remain a persistent unmet medical need that decrease expectancy and quality of life. Here, we report that topical application of PY-60, a small molecule activator of the transcriptional coactivator YAP, promotes regenerative repair of cutaneous wounds in pig and human models. Pharmacological YAP activation enacts a reversible pro-proliferative transcriptional program in keratinocytes and dermal cells that results in accelerated re-epithelization and regranulation of the wound bed. These results demonstrate that transient topical administration of a YAP activating agent may represent a generalizable therapeutic approach to treating chronic wounds.

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Transcription profiling by array of excisional biopsy wounds from young and old human subjects to measure the influence of age on cutaneous wound healing

Project description:The aim of this experiment was measure the influence of age on cutaneous wound healing using human subjects. Increaded age has been associated with delayed wound healing in mouse models and in humans. Gene expression was compared between excisional biopsy wounds from young and old subjects.

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Multi-omic analysis reveals divergent molecular events in scarring and regenerative wound healing

Project description:Regeneration is the “holy grail” of tissue repair, but skin injury typically yields fibrotic, non-functional scars. Developing pro-regenerative therapies requires rigorous understanding of the molecular progression from injury to fibrosis or regeneration. Here, we report the divergent molecular events driving skin wound cells toward either scarring or regenerative fates. We profile scarring versus YAP inhibition-induced wound regeneration at the transcriptional (single-cell RNA-sequencing), protein (timsTOF proteomics), and tissue (extracellular matrix ultrastructural analysis) levels. Using cell surface barcoding, we integrate these data to reveal fibrotic and regenerative “molecular trajectories” of healing. We show that disrupting YAP mechanical signaling yields regenerative repair orchestrated by fibroblasts with activated Trps1 and Wnt signaling. Finally, by performing in vivo gene knockdown and overexpression in wounds, we identify Trps1 as a key regulatory gene that is necessary and partially sufficient for wound regeneration. Our findings serve as a multimodal map of wound regeneration and could have therapeutic implications for pathologic fibroses.

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Single cell RNA-seq analyses of dermis from wound day 18 large skin wounds that healed in a fibrotic or regenerative fashion.

Project description:Human and murine skin wounding commonly result in fibrotic scarring but the murine wounding model Wound Induced Hair Neogenesis (WIHN) can frequently result in a regenerative repair response. Here we show in single cell RNA-seq comparisons of semi-regenerative and fibrotic WIHN wounds, increased expression of phagocytic/lysosomal genes in macrophages associated with predominance of fibrotic myofibroblasts in fibrotic wounds. Investigation revealed that macrophages in the late wound drive fibrosis by phagocytizing dermal Wnt inhibitor SFRP4 to establish persistent Wnt activity. In accordance, phagocytosis abrogation resulted in transient Wnt activity and a more regenerative healing. Phagocytosis of SFRP4 was integrin-mediated and dependent on the interaction of SFRP4 with the EDA splice variant of fibronectin. In the human skin condition Hidradenitis suppurativa, phagocytosis of SFRP4 by macrophages correlated with fibrotic wound repair. These results reveal that macrophages can modulate a key signaling pathway via phagocytosis to alter the skin wound healing fate.

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Single-cell ATAC-Seq of cells recruited to regenerative portions of large skin wounds.

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