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Title: Brg1 modulates enhancer activation in mesoderm lineage commitment

Journal Article · · Development (Cambridge)
DOI:https://doi.org/10.1242/dev.109496· OSTI ID:1256947
 [1];  [1];  [1];  [1];  [2];  [3];  [4]
  1. Gladstone Institute of Cardiovascular Disease, San Francisco, CA (United States); Roddenberry Center for Stem Cell Biology and Medicine at Gladstone, San Francisco, CA (United States)
  2. Institute of Medical Biology (Singapore). A*STAR
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); DOE Joint Genome Institute, Walnut Creek, CA (United States)
  4. Gladstone Institute of Cardiovascular Disease, San Francisco, CA (United States); Roddenberry Center for Stem Cell Biology and Medicine at Gladstone, San Francisco, CA (United States); Univ. of California, San Francisco, CA (United States)

The interplay between different levels of gene regulation in modulating developmental transcriptional programs, such as histone modifications and chromatin remodeling, is not well understood. Here, we show that the chromatin remodeling factor Brg1 is required for enhancer activation in mesoderm induction. In an embryonic stem cell-based directed differentiation assay, the absence of Brg1 results in a failure of cardiomyocyte differentiation and broad deregulation of lineage-specific gene expression during mesoderm induction. We find that Brg1 co-localizes with H3K27ac at distal enhancers and is required for robust H3K27 acetylation at distal enhancers that are activated during mesoderm induction. Brg1 is also required to maintain Polycomb-mediated repression of non-mesodermal developmental regulators, suggesting cooperativity between Brg1 and Polycomb complexes. Thus, Brg1 is essential for modulating active and repressive chromatin states during mesoderm lineage commitment, in particular the activation of developmentally important enhancers. In conclusion, these findings demonstrate interplay between chromatin remodeling complexes and histone modifications that, together, ensure robust and broad gene regulation during crucial lineage commitment decisions.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231; R01HG003988; U54HG006997; U01DE020060NIH
OSTI ID:
1256947
Journal Information:
Development (Cambridge), Vol. 142, Issue 8; ISSN 0950-1991
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 70 works
Citation information provided by
Web of Science

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Cited By (34)

Oncogene-dependent function of BRG1 in hepatocarcinogenesis journal February 2020
Loss of the Polycomb group protein Rnf2 results in derepression of tbx-transcription factors and defects in embryonic and cardiac development journal March 2019
Baf53a is involved in survival of mouse ES cells, which can be compensated by Baf53b journal October 2017
The SWI/SNF chromatin remodelling complex is required for maintenance of lineage specific enhancers journal March 2017
Chromatin remodeling and bivalent histone modifications in embryonic stem cells journal October 2015
EOMES interacts with RUNX3 and BRG1 to promote innate memory cell formation through epigenetic reprogramming journal July 2019
Epigenomes in Cardiovascular Disease journal May 2018
Genome-wide identification of novel intergenic enhancer-like elements: implications in the regulation of transcription in Plasmodium falciparum journal August 2017
Pioneering function of Isl1 in the epigenetic control of cardiomyocyte cell fate journal April 2019
Cdx2 Regulates Gene Expression through Recruitment of Brg1-associated Switch-Sucrose Non-fermentable (SWI-SNF) Chromatin Remodeling Activity journal January 2017
Tumor suppressor SMARCB1 suppresses super-enhancers to govern hESC lineage determination journal April 2019
Mammalian SWI/SNF collaborates with a polycomb-associated protein to regulate male germ line transcription in the mouse posted_content November 2018
Chromatin Remodeling BAF (SWI/SNF) Complexes in Neural Development and Disorders journal August 2017
Dynamic BAF chromatin remodeling complex subunit inclusion promotes temporally distinct gene expression programs in cardiogenesis journal February 2019
mSWI/SNF promotes polycomb repression both directly and through genome-wide redistribution posted_content December 2020
SMARCB1-mediated SWI/SNF complex function is essential for enhancer regulation journal December 2016
β‐Actin‐dependent global chromatin organization and gene expression programs control cellular identity journal January 2018
SMARCA4 loss is synthetic lethal with CDK4/6 inhibition in non-small cell lung cancer journal February 2019
A Mass Spectrometry Survey of Chromatin‐Associated Proteins in Pluripotency and Early Lineage Commitment journal July 2019
ARID1A loss impairs enhancer-mediated gene regulation and drives colon cancer in mice journal December 2016
Altered expression of BRG1 and histone demethylases, and aberrant H3K4 methylation in less developmentally competent embryos at the time of embryonic genome activation: H3K4 M ETHYLATION AND E MBRYO D EVELOPMENT journal December 2016
Chromatin Remodeling Factor BRG1 Regulates Stemness and Chemosensitivity of Glioma Initiating Cells: BRG1 Regulates GBM Stemness and Chemosensitivity journal November 2018
The chromatin regulator Brg1 suppresses formation of intraductal papillary mucinous neoplasm and pancreatic ductal adenocarcinoma journal February 2014
Role of Epigenetics in Cardiac Development and Congenital Diseases journal October 2018
Role of Cdx factors in early mesodermal fate decisions journal April 2019
mSWI/SNF promotes Polycomb repression both directly and through genome-wide redistribution journal June 2021
Mammalian SWI/SNF collaborates with a polycomb-associated protein to regulate male germ line transcription in the mouse journal January 2019
BAF chromatin remodeling complex subunit diversity promotes temporally distinct gene expression programs in cardiogenesis posted_content October 2018
SWI/SNF component BAF250a coordinates OCT4 and WNT signaling pathway to control cardiac lineage differentiation posted_content January 2019
KMT2D regulates specific programs in heart development via histone H3 lysine 4 di-methylation journal March 2016
Genome-Wide Transcriptional Regulation Mediated by Biochemically Distinct SWI/SNF Complexes journal December 2015
Brg1 chromatin remodeling ATPase balances germ layer patterning by amplifying the transcriptional burst at midblastula transition journal May 2017
BRG1 targeting STAT3/VEGFC signaling regulates lymphangiogenesis in colorectal cancer journal April 2016
Activation of TWIST Transcription by Chromatin Remodeling Protein BRG1 Contributes to Liver Fibrosis in Mice journal May 2020

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