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Context-dependent transcriptional remodeling of TADs during differentiation

Abstract : Metazoan chromosomes are organized into discrete domains (TADs), believed to contribute to the regulation of transcriptional programs. Despite extensive correlation between TAD organization and gene activity, a direct mechanistic link is unclear, with perturbation studies often showing little effect. To follow TAD dynamics during development, we used Capture Hi-C to interrogate the TADs around key differentially expressed genes during mouse thymocyte maturation, uncovering specific remodeling events. Notably, one TAD boundary was broadened to accommodate RNA polymerase elongation past the border, and sub-domains were formed around some activated genes without changes in CTCF binding. The ectopic induction of one gene was sufficient to recapitulate microdomain formation in embryonic stem cells, providing strong evidence that transcription can directly remodel chromatin .
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Preprints, Working Papers, ...
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Contributor : Daniel Jost Connect in order to contact the contributor
Submitted on : Wednesday, October 5, 2022 - 9:05:17 AM
Last modification on : Friday, October 7, 2022 - 11:43:11 AM


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Sanjay Chahar, Yousra Ben Zouari, Hossein Salari, Anne Molitor, Dominique Kobi, et al.. Context-dependent transcriptional remodeling of TADs during differentiation. 2022. ⟨hal-03797986⟩



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