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Chromatin accessibility of young and aged muscle stem cells in response to prostaglandin E2

ABSTRACT: Chromatin accessibility of young and aged muscle stem cells in response to prostaglandin E2

PROVIDER: PRJNA789985 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR17267137_1.fastq.gz	Fastqsanger.gz
	SRR17267137_2.fastq.gz	Fastqsanger.gz
	SRR17267138_1.fastq.gz	Fastqsanger.gz
	SRR17267138_2.fastq.gz	Fastqsanger.gz

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Chromatin accessibility of young and aged muscle stem cells in response to prostaglandin E2

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Enhanced cardiac reprogramming by Inhibition of cyclooxygenase-2/prostaglandin E2/prostaglandin E receptor 4 signaling

Project description:Direct cardiac reprogramming from fibroblasts can be a promising approach for disease modeling, drug screening, and cardiac regeneration in pediatric and adult patients. However, postnatal and adult fibroblasts are less efficient for reprogramming compared with embryonic fibroblasts, and barriers to cardiac reprogramming associated with aging remain undetermined. In this study, we screened 8,400 chemical compounds, and found that diclofenac sodium (diclofenac), a non-steroidal anti-inflammatory drug, greatly enhanced cardiac reprogramming in combination with Gata4, Mef2c, and Tbx5 (GMT) or GMT plus Hand2. Intriguingly, diclofenac promoted cardiac reprogramming in mouse postnatal and adult tail-tip fibroblasts (TTFs), but not in mouse embryonic fibroblasts (MEFs). Mechanistically, diclofenac enhanced cardiac reprogramming by inhibiting cyclooxygenase-2, prostaglandin E2/prostaglandin E receptor 4, cyclic AMP/protein kinase A, and interleukin 1b pathway, silencing inflammatory and fibroblast programs, which were activated in postnatal and adult TTFs. Thus, anti-inflammation can be a new target for cardiac reprogramming associated with aging.

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