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CTCF Functions as an Insulator for Somatic Genes and a Structural Regulator for Pluripotent Genes during Reprogramming [BL-Hi-C]

ABSTRACT: CTCF Functions as an Insulator for Somatic Genes and a Structural Regulator for Pluripotent Genes during Reprogramming [BL-Hi-C]

PROVIDER: PRJNA509470 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13264732_1.fastq.gz	Fastqsanger.gz
	SRR13264732_2.fastq.gz	Fastqsanger.gz
	SRR13264733_1.fastq.gz	Fastqsanger.gz
	SRR13264733_2.fastq.gz	Fastqsanger.gz
	SRR13264734_1.fastq.gz	Fastqsanger.gz

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CTCF Functions as an Insulator for Somatic Genes and a Structural Regulator for Pluripotent Genes during Reprogramming [BL-Hi-C]

Project description:CCCTC binding factor (CTCF) has been implicated in mediating chromatin insulation and long-distance interactions between enhancer and promoter. In this study, to study the roles of CTCF in somatic cell reprogramming, we performed RNA-seq, Hi-C, ChIP-seq and ATAC-seq at the specific stage of reprogramming. Through bioinformatics analysis, our data indicated that CTCF promotes enhancer-promoter interactions and chromatin accessibility to regulate the expression of key pluripotency genes; meanwhile, it serves as an insulator to suppress the expression of key somatic genes. Smarca5 loss inhibits CTCF-promoted reprogramming by reversing CTCF insulator activity on MEF-specific genes and leading to incorrect nucleosome positioning adjacent to CTCF binding sites. These findings reveal the dual functions of CTCF as both a structural regulator and insulator in conjunction with a key chromatin remodeler to drive cellular reprogramming towards pluripotency.

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