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© Research
Publication : The EMBO journal

Growth inhibition by the mammalian SWI-SNF subunit Brm is regulated by acetylation

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The EMBO journal - 15 Dec 2003

Bourachot B, Yaniv M, Muchardt C

Link to Pubmed [PMID] – 14657023

EMBO J. 2003 Dec;22(24):6505-15

In mammalian cells, the SWI-SNF chromatin-remodeling complex is a regulator of cell proliferation, and overexpression of the catalytic subunit Brm interferes with cell cycle progression. Here, we show that treatment with histone deacetylase (HDAC) inhibitors reduces the inhibitory effect of Brm on the growth of mouse fibroblasts. This observation led to the identification of two carboxy-terminal acetylation sites in the Brm protein. Mutation of these sites into non-acetylatable sequences increased both the growth-inhibitory and the transcriptional activities of Brm. We also show that culture in the presence of HDAC inhibitors facilitates the isolation of clones overexpressing Brm. Removal of the HDAC inhibitors from the growth medium of these clones leads to downregulation of cyclin D1. This downregulation is absent in cell transformed by oncogenic ras.

http://www.ncbi.nlm.nih.gov/pubmed/14657023