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Gene bivalency at Polycomb domains regulates cranial neural crest positional identity

ABSTRACT: Gene bivalency at Polycomb domains regulates cranial neural crest positional identity

PROVIDER: PRJNA352213 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR4834470_1.fastq.gz	Fastqsanger.gz
	SRR4834470_2.fastq.gz	Fastqsanger.gz
	SRR4835030.fastq.gz	Fastqsanger.gz
	SRR4835040.fastq.gz	Fastqsanger.gz
	SRR4835050.fastq.gz	Fastqsanger.gz

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Gene bivalency at Polycomb domains regulates cranial neural crest positional identity [ATAC-seq]

Project description:The cranial neural crest cells are pluripotent cells that provide head skeletogenic mesenchyme and are crucial for craniofacial patterning. Here, we analyzed the in vivo chromatin landscapes of mouse cranial neural crest subpopulations. Early postmigratory neural crest subpopulations contributing to distinct mouse craniofacial structures displayed similar chromatin accessibility patterns, yet differed transcriptionally. Accessible promoters and enhancers of differentially silenced genes carried H3K27me3/H3K4me2 bivalent chromatin marks embedded in large Ezh2-dependent Polycomb domains, indicating transcriptional poising. These postmigratory bivalent regions were already present in neural crest premigratory progenitors. At Polycomb domains, H3K27me3 antagonized H3K4me2 deposition, which was restricted to accessible sites. Thus, bivalent Polycomb domains provide a chromatin template for the regulation of cranial neural crest cell positional identity in vivo contributing novel insights into the epigenetic regulation of face morphogenesis.

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