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Large-scale multi-omics analysis suggests specific roles for intragenic cohesin in transcriptional regulation

Cohesin, an essential protein complex for chromosome segregation, regulates transcription through a variety of mechanisms. It is not a trivial task to assign diverse cohesin functions. Moreover, the context-specific roles of cohesin-mediated interactions, especially on intragenic regions, have not b...

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Published in:Nature communications 2022-06, Vol.13 (1), p.3218-3218, Article 3218
Main Authors: Wang, Jiankang, Bando, Masashige, Shirahige, Katsuhiko, Nakato, Ryuichiro
Format: Article
Language:English
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Summary:Cohesin, an essential protein complex for chromosome segregation, regulates transcription through a variety of mechanisms. It is not a trivial task to assign diverse cohesin functions. Moreover, the context-specific roles of cohesin-mediated interactions, especially on intragenic regions, have not been thoroughly investigated. Here we perform a comprehensive characterization of cohesin binding sites in several human cell types. We integrate epigenomic, transcriptomic and chromatin interaction data to explore the context-specific functions of intragenic cohesin related to gene activation. We identify a specific subset of cohesin binding sites, decreased intragenic cohesin sites (DICs), which are negatively correlated with transcriptional regulation. A subgroup of DICs is enriched with enhancer markers and RNA polymerase II, while the others are more correlated to chromatin architecture. DICs are observed in various cell types, including cells from patients with cohesinopathy. We also implement machine learning to our data and identified genomic features for isolating DICs from all cohesin sites. These results suggest a previously unidentified function of cohesin on intragenic regions for transcriptional regulation. Cohesin complex is essential for transcriptional regulation and chromosome folding. Here the authors provide a large-scale multi-omics analysis suggesting that cohesin bound on gene bodies has a specific role in transcriptional regulation.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-30792-9