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Vascular smooth muscle selective deletion of Srf

ABSTRACT: Vascular smooth muscle selective deletion of Srf

PROVIDER: PRJNA577451 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10275323.fastq.gz	Fastqsanger.gz
	SRR10275324.fastq.gz	Fastqsanger.gz
	SRR10275325.fastq.gz	Fastqsanger.gz
	SRR10275326.fastq.gz	Fastqsanger.gz
	SRR10275327.fastq.gz	Fastqsanger.gz

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Vascular smooth muscle selective deletion of Srf

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Project description:All current smooth muscle cell (SMC) restricted Cre mice recombine floxed alleles in vascular and visceral SMCs. We generated a tamoxifen-inducible CreERT2 mouse, Itga8-CreERT2, and compared its activity to the widely used Myh11-CreERT2 mouse. Both CreERT2 mice showed similar activity in vascular SMCs; however, Itga8-CreERT2 displayed low activity in visceral SMC-containing tissues (e.g., intestine). Myh11-CreERT2 (but not Itga8-CreERT2) mice exhibited high levels of CreERT2 protein, tamoxifen-independent activity, and an altered transcriptome. Whereas Myh11-CreERT2-mediated knockout of Srf resulted in a lethal intestinal phenotype, loss of Srf with Itga8-CreERT2 (SrfItga8) revealed viable mice with attenuated vascular SMC contractile gene expression, but no evidence of intestinal pathology. Male and female SrfItga8 mice presented with vascular contractile incompetence; however, only male SrfItga8 mice showed systemic changes in blood pressure. These results establish the Itga8-CreERT2 mouse as an alternative to existing SMC Cre strains where gene loss may result in visceral myopathies that obfuscate accurate phenotyping in vascular SMCs.

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