The histone variant macroH2A is an epigenetic regulator of key developmental genes

被引：151

作者：

Buschbeck, Marcus ^{[1
]}

Uribesalgo, Iris ^{[1
]}

Wibowo, Indra ^{[1
]}

Rue, Pau ^{[1
,2
]}

Martin, David ^{[1
]}

Gutierrez, Arantxa ^{[1
]}

Morey, Lluis ^{[1
]}

Guigo, Roderic ^{[1
]}

Lopez-Schier, Hernan ^{[1
]}

Di Croce, Luciano ^{[1
,3
]}

机构：

[1] PRBB, CRG, Barcelona, Spain

[2] Univ Politecn Cataluna, Dept Fis & Engn Nucl, Terrassa, Spain

[3] ICREA, Barcelona, Spain

来源：

NATURE STRUCTURAL & MOLECULAR BIOLOGY | 2009年 / 16卷 / 10期

关键词：

POLYCOMB TARGET GENES; BINDING; TRANSCRIPTION; EXPRESSION; INTERFERES; GENOME; SUZ12; H2A;

D O I：

10.1038/nsmb.1665

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The histone variants macroH2A1 and macroH2A2 are associated with X chromosome inactivation in female mammals. However, the physiological function of macroH2A proteins on autosomes is poorly understood. Microarray-based analysis in human male pluripotent cells uncovered occupancy of both macroH2A variants at many genes encoding key regulators of development and cell fate decisions. On these genes, the presence of macroH2A1+2 is a repressive mark that overlaps locally and functionally with Polycomb repressive complex 2. We demonstrate that macroH2A1+2 contribute to the fine-tuning of temporal activation of HOXA cluster genes during neuronal differentiation. Furthermore, elimination of macroH2A2 function in zebrafish embryos produced severe but specific phenotypes. Taken together, our data demonstrate that macroH2A variants constitute an important epigenetic mark involved in the concerted regulation of gene expression programs during cellular differentiation and vertebrate development.

引用

页码：1074 / U95

页数：7

共 40 条

[1] Epigenetic determination of a cell-specific gene expression program by ATF-2 and the histone variant macroH2A [J].