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Long-range enhancer-controlled genes are hyper-sensitive to regulatory factor perturbations [CRISPRi screen].

ABSTRACT: Long-range enhancer-controlled genes are hyper-sensitive to regulatory factor perturbations [CRISPRi screen].

PROVIDER: PRJNA1184746 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR31308000.fastq.gz	Fastqsanger.gz
	SRR31308001.fastq.gz	Fastqsanger.gz
	SRR31308002.fastq.gz	Fastqsanger.gz
	SRR31308003.fastq.gz	Fastqsanger.gz
	SRR31308004.fastq.gz	Fastqsanger.gz

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Long-range enhancer-controlled genes are hyper-sensitive to regulatory factor perturbations

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Long-range enhancer-controlled genes are hyper-sensitive to regulatory factor perturbations [CRISPRi screen].

Project description:Cell-type-specific gene activation is regulated by enhancers, sometimes located at large genomic distances from target gene promoters. Whether distal enhancers require specific factors to orchestrate gene regulation remains unclear. Here, we used enhancer distance-controlled reporter screens to find candidate factors. We depleted them and employed activity-by-contact predictions to genome-wide classify genes based on enhancer distance. Predicted distal enhancers typically control tissue-restricted genes and often are strong enhancers. We find cohesin, but also mediator, most specifically required for long-range activation, with cohesin repressing short-range gene activation and prioritizing distal over proximal HBB genes competing for shared enhancers. Long-range controlled genes are also most sensitive to perturbations of other regulatory proteins and to BET inhibitor JQ1, this being more a consequence of their distinct enhancer features than distance. Our work predicts that lengthening of intervening sequences can help limit the expression of target genes to specialized cells with optimal trans-factor environments.

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