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Characterization of hundreds of regulatory landscapes in developing limbs reveals two regimes of chromatin folding

ABSTRACT: Characterization of hundreds of regulatory landscapes in developing limbs reveals two regimes of chromatin folding

PROVIDER: PRJNA331156 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3950230_1.fastq.gz	Fastqsanger.gz
	SRR3950230_2.fastq.gz	Fastqsanger.gz
	SRR3950240_1.fastq.gz	Fastqsanger.gz
	SRR3950240_2.fastq.gz	Fastqsanger.gz
	SRR3950300.fastq.gz	Fastqsanger.gz

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Characterization of hundreds of regulatory landscapes in developing limbs reveals two regimes of chromatin folding [RNA-seq]

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Characterization of hundreds of regulatory landscapes in developing limbs reveals two regimes of chromatin folding.

Project description:Complex regulatory landscapes control the pleiotropic transcriptional activities of developmental genes. For most genes, the number, location, and dynamics of their associated regulatory elements are unknown. In this work, we characterized the three-dimensional chromatin microarchitecture and regulatory landscape of 446 limb-associated gene loci in mouse using Capture-C, ChIP-seq, and RNA-seq in forelimb, hindlimb at three developmental stages, and midbrain. The fine mapping of chromatin interactions revealed a strong preference for functional genomic regions such as repressed or active domains. By combining chromatin marks and interaction peaks, we annotated more than 1000 putative limb enhancers and their associated genes. Moreover, the analysis of chromatin interactions revealed two regimes of chromatin folding, one producing interactions stable across tissues and stages and another one associated with tissue and/or stage-specific interactions. Whereas stable interactions associate strongly with CTCF/RAD21 binding, the intensity of variable interactions correlates with changes in underlying chromatin modifications, specifically at the viewpoint and at the interaction site. In conclusion, this comprehensive data set provides a resource for the characterization of hundreds of limb-associated regulatory landscapes and a framework to interpret the chromatin folding dynamics observed during embryogenesis.

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Characterization of hundreds of regulatory landscapes in developing limbs reveals two regimes of chromatin folding

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