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ARID1A mutations promote P300-dependent endometrial invasion through super-enhancer hyperacetylation (P300_ChIP)

ABSTRACT: ARID1A mutations promote P300-dependent endometrial invasion through super-enhancer hyperacetylation (P300_ChIP)

PROVIDER: PRJNA624337 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11538148.fastq.gz	Fastqsanger.gz
	SRR11538149.fastq.gz	Fastqsanger.gz
	SRR11538150.fastq.gz	Fastqsanger.gz

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ARID1A mutations promote P300-dependent endometrial invasion through super-enhancer hyperacetylation (RNA)

Project description:Endometriosis affects 1-in-10 women and is characterized by the presence of abnormal endometrium at ectopic sites. ARID1A mutations are observed in deeply invasive forms of the disease, often correlating with malignancy. To identify epigenetic dependencies driving invasion, we utilized an unbiased approach to map chromatin state transitions accompanying ARID1A loss in the endometrium. We show that super-enhancers marked by high H3K27-acetylation are strongly associated with ARID1A binding. ARID1A loss leads to H3K27-hyperacetylation and increased chromatin accessibility and enhancer RNA transcription at super-enhancers, but not typical enhancers, indicating that ARID1A normally prevents super-enhancer hyperactivation. ARID1A co-localizes with P300 at super-enhancers, and genetic or pharmacological inhibition of P300 in ARID1A-mutant endometrial epithelia suppresses invasion and induces anoikis through rescue of super-enhancer hyperacetylation. Among hyperactivated super-enhancers, SERPINE1 (PAI-1) was identified as an essential target gene driving ARID1A-mutant endometrial invasion. Broadly, our findings provide rationale for therapeutic strategies targeting super-enhancers in ARID1A-mutant endometrium.

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