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HDAC8 mutations in Cornelia de Lange syndrome affect the cohesin acetylation cycle
Journal article   Open access   Peer reviewed

HDAC8 mutations in Cornelia de Lange syndrome affect the cohesin acetylation cycle

Matthew Deardorff, Masashige Bando, Ryuichiro Nakato, Erwan Watrin, Takehiko Itoh, Masashi Minamino, Katsuya Saitoh, Makiko Komata, Yuki Katou, Dinah Clark, …
Nature (London), v 489(7415)
13 Sep 2012
PMID: 22885700
url
https://europepmc.org/articles/pmc3443318View
Accepted (AM)Open Access (License Unspecified) Open
url
https://doi.org/10.1038/nature11316View
Published, Version of Record (VoR) Open

Abstract

Acetylation Adaptor Proteins, Signal Transducing Anaphase Binding Sites Cell Cycle Proteins Chondroitin Sulfate Proteoglycans Chromatin Chromatin Immunoprecipitation Chromosomal Proteins, Non-Histone Crystallography, X-Ray De Lange Syndrome Development Biology Female Fibroblasts Genetics HeLa Cells Histone Deacetylases Humans Life Sciences Male Models, Molecular Mutant Proteins Mutation Nuclear Proteins Phosphoproteins Prophase Protein Conformation Proteins Repressor Proteins Transcription, Genetic
Cornelia de Lange syndrome (CdLS) is a dominantly inherited congenital malformation disorder, caused by mutations in the cohesin-loading protein NIPBL for nearly 60% of individuals with classical CdLS, and by mutations in the core cohesin components SMC1A (~5%) and SMC3 (<1%) for a smaller fraction of probands. In humans, the multisubunit complex cohesin is made up of SMC1, SMC3, RAD21 and a STAG protein. These form a ring structure that is proposed to encircle sister chromatids to mediate sister chromatid cohesion and also has key roles in gene regulation. SMC3 is acetylated during S-phase to establish cohesiveness of chromatin-loaded cohesin, and in yeast, the class I histone deacetylase Hos1 deacetylates SMC3 during anaphase. Here we identify HDAC8 as the vertebrate SMC3 deacetylase, as well as loss-of-function HDAC8 mutations in six CdLS probands. Loss of HDAC8 activity results in increased SMC3 acetylation and inefficient dissolution of the 'used' cohesin complex released from chromatin in both prophase and anaphase. SMC3 with retained acetylation is loaded onto chromatin, and chromatin immunoprecipitation sequencing analysis demonstrates decreased occupancy of cohesin localization sites that results in a consistent pattern of altered transcription seen in CdLS cell lines with either NIPBL or HDAC8 mutations.

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Web of Science research areas
Biochemistry & Molecular Biology
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