In vivo epigenomic profiling of germ cells reveals germ cell molecular signatures.
Dev Cell
; 24(3): 324-33, 2013 Feb 11.
Article
em En
| MEDLINE
| ID: mdl-23352811
ABSTRACT
The limited number of in vivo germ cells poses an impediment to genome-wide studies. Here, we applied a small-scale chromatin immunoprecipitation sequencing (ChIP-seq) method on purified mouse fetal germ cells to generate genome-wide maps of four histone modifications (H3K4me3, H3K27me3, H3K27ac, and H2BK20ac). Comparison of active chromatin state between somatic, embryonic stem, and germ cells revealed promoters and enhancers needed for stem cell maintenance and germ cell development. We found the nuclear receptor Nr5a2 motif to be enriched at a subset of germ cell cis-regulatory regions, and our results implicate Nr5a2 in germ cell biology. Interestingly, in germ cells, the H3K27me3 histone modification occurs more frequently at regions that are enriched for retrotransposons and MHC genes, indicating that these loci are specifically silenced in germ cells. Together, our study provides genome-wide histone modification maps of in vivo germ cells and reveals the molecular chromatin signatures of germ cells.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Histona-Lisina N-Metiltransferase
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Receptores Citoplasmáticos e Nucleares
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Epigênese Genética
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Células-Tronco Embrionárias
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Células Germinativas
Limite:
Animals
Idioma:
En
Revista:
Dev Cell
Assunto da revista:
EMBRIOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de publicação:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA