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Cornelia de Lange syndrome mutations in NIPBL can impair cohesin-mediated DNA loop extrusion.

ABSTRACT: Cornelia de Lange syndrome (CdLS) is a developmental multisystem disorder frequently associated with mutations in NIPBL. CdLS is thought to arise from developmental gene regulation defects, but how NIPBL mutations cause these is unknown. Here we show that several NIPBL mutations impair the DNA loop extrusion activity of cohesin. Because this activity is required for the formation of chromatin loops and topologically associating domains, which have important roles in gene regulation, our results suggest that defects in cohesin-mediated loop extrusion contribute to the etiology of CdLS by altering interactions between developmental genes and their enhancers.

SUBMITTER: Panarotto M

PROVIDER: S-EPMC9170158 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Cornelia de Lange syndrome mutations in NIPBL can impair cohesin-mediated DNA loop extrusion.

Panarotto Melanie M Davidson Iain F IF Litos Gabriele G Schleiffer Alexander A Peters Jan-Michael JM

Proceedings of the National Academy of Sciences of the United States of America 20220427 18

Cornelia de Lange syndrome (CdLS) is a developmental multisystem disorder frequently associated with mutations in NIPBL. CdLS is thought to arise from developmental gene regulation defects, but how NIPBL mutations cause these is unknown. Here we show that several NIPBL mutations impair the DNA loop extrusion activity of cohesin. Because this activity is required for the formation of chromatin loops and topologically associating domains, which have important roles in gene regulation, our results ...[more]

PMID: 35476527

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