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Insulin receptor associates with promoters genome-wide and regulates gene expression

ABSTRACT: Insulin receptor associates with promoters genome-wide and regulates gene expression

PROVIDER: PRJNA419799 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6322520.fastq.gz	Fastqsanger.gz
	SRR6322530.fastq.gz	Fastqsanger.gz
	SRR6322540.fastq.gz	Fastqsanger.gz
	SRR6322521.fastq.gz	Fastqsanger.gz
	SRR6322531.fastq.gz	Fastqsanger.gz

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Project description:ChIP-seq analysis demonstrates an association of insulin receptor (IR) and RNA polymerase II on chromatin, with striking enrichment at gene promoters.

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Insulin Receptor Associates with Promoters Genome-wide and Regulates Gene Expression.

Project description:Insulin receptor (IR) signaling is central to normal metabolic control and dysregulated in prevalent chronic diseases. IR binds insulin at the cell surface and transduces rapid signaling via cytoplasmic kinases. However, mechanisms mediating long-term effects of insulin remain unclear. Here, we show that IR associates with RNA polymerase II in the nucleus, with striking enrichment at promoters genome-wide. The target genes were highly enriched for insulin-related functions including lipid metabolism and protein synthesis and diseases including diabetes, neurodegeneration, and cancer. IR chromatin binding was increased by insulin and impaired in an insulin-resistant disease model. Promoter binding by IR was mediated by coregulator host cell factor-1 (HCF-1) and transcription factors, revealing an HCF-1-dependent pathway for gene regulation by insulin. These results show that IR interacts with transcriptional machinery at promoters and identify a pathway regulating genes linked to insulin's effects in physiology and disease.

| S-EPMC6478446 | biostudies-literature