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HEB associates with PRC2 and SMAD2/3 to regulate developmental fates [ChIP-Seq]

ABSTRACT: We report the interaction between HEB and PRC2 components in mouse embryonic stem cells (ESCs)

ORGANISM(S): Mus musculus

PROVIDER: GSE53233 | GEO | 2015/06/30

SECONDARY ACCESSION(S): PRJNA231183

REPOSITORIES: GEO

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HEB associates with PRC2 and SMAD2/3 to regulate developmental fates [ChIP-Seq]

Project description:We report the interaction between HEB and PRC2 components in mouse embryonic stem cells (ESCs) ChIP-Seq of HEB and SMAD2/3 in mouse ESC and derived endoderm

2015-06-30 | E-GEOD-53233 | biostudies-arrayexpress

HEB associates with PRC2 and SMAD2/3 to regulate developmental fates [RNA-Seq]

Project description:We report the interaction between HEB and PRC2 components in mouse embryonic stem cells (ESCs) We profiled gene expression for biological triplicate shControl- and shHEB-infected ESCs and differentiated embryoid body (EB) in serum-free defined culture system with or without activin treatment

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HEB associates with PRC2 and SMAD2/3 to regulate developmental fates

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2015-06-30 | E-GEOD-60286 | biostudies-arrayexpress

HEB associates with PRC2 and SMAD2/3 to regulate developmental fates

Project description:This SuperSeries is composed of the SubSeries listed below.

2015-06-30 | GSE60286 | GEO

Integrative proteomics reveals a protective role of PRC2 for the ground state pluripotent epigenome

Project description:The ground state of pluripotency is defined as a basal proliferative state free of epigenetic restriction, represented by mouse embryonic stem cells (ESCs) cultured with two kinase inhibitors (so-called “2i”). Through comparison with serum-grown ESCs, we identify epigenetic features characterizing 2i ESCs by proteome profiling of chromatin including post-translational histone modifications. The most prominent difference is H3K27me3 and its enzymatic writer complex PRC2 that are highly abundant on eu- and heterochromatin in 2i ESCs, with H3K27me3 redistributing outside canonical PRC2 targets in a CpG-dependent fashion. Using PRC2-deficient 2i ESCs, we identify epigenetic crosstalk with H3K27me3, including significant increases in H4 acetylation and DNA methylation. This suggests that the unique H3K27me3 configuration protects 2i ESCs from preparation to lineage priming. Interestingly, removal of DNA methylation in PRC2-deficient 2i ESCs lacking H3K27me3 using 5-azacytidine hardly affected ESC viability and transcriptome, showing that ESCs are independent of both major repressive epigenetic marks.

2018-11-21 | PXD007154 | Pride

Polycomb-like 2 associates with PRC2 and is required for mouse embryonic stem cell

Project description:Polycomb group (PcG) proteins are highly conserved epigenetic transcriptional repressors important for the control of numerous developmental gene expression programs and have recently been implicated in the modulation of embryonic stem cell (ESC) identity. We identified the PcG protein PCL2 (polycomb-like 2) in a genome-wide screen for novel regulators of self-renewal and pluripotency and predicted that it would play an important role in mouse ESC fate determination. Using multiple biochemical strategies, we provide evidence that PCL2 is a novel Polycomb Repressive Complex 2 (PRC2)-associated protein in mouse ESCs. Knockdown of Pcl2 in ESCs resulted in heightened self-renewal characteristics, defects in differentiation and altered patterns of histone methylation. Through integration of global gene expression and promoter occupancy analyses of both PCL2 and PRC2 components EZH2 and SUZ12, we have predicted PCL2 target genes and formulated regulatory networks describing the role of PCL2 both in modulating transcription of ESC self-renewal genes in undifferentiated ESCs as well as developmental regulators during early commitment and differentiation. Cells were stably expressing Pcl2 shRNA or shRNA mismatch control sequences. Hybridizations of three biological replicates for both the control and Pcl2 shRNA clone were performed.

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Polycomb-like 2 associates with PRC2 and is required for mouse embryonic stem cell

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Global transcriptome analysis of WT versus HEB-/- hESCs

Project description:To examine genome-wide changes in mRNA expression, we performed RNA-Seq on HEB-/- and WT hESCs. There were 274 significant changes in mRNA expression (p<0.05) between HEB-/- and WT hESCs; 126 transcripts were lower and 148 transcripts were higher

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Hira-dependent histone H3.3 deposition facilitates PRC2 recruitment at developmental loci in ES cells [ChIP-Seq]

Project description:Polycomb repressive complex 2 (PRC2) regulates gene expression during lineage specification through trimethylation of lysine 27 on histone H3 (H3K27me3). In Drosophila, polycomb binding sites are dynamic chromatin regions coupled to incorporation of the histone variant H3.3. Here we show in mouse embryonic stem cells (ESCs) that H3.3 is required for proper establishment of H3K27me3 at the promoters of developmentally regulated genes. These promoters show reduced dynamics as determined by deposition of de novo synthesized histones, associated with reduced PRC2 occupancy. H3.3-depleted ESCs show upregulation of extraembryonic trophectoderm, as well as misregulation of other developmental genes upon differentiation. Our data demonstrate the importance of H3.3 incorporation in ESCs and suggest that changes in chromatin dynamics in its absence lead to misregulation of gene expression during differentiation. Moreover, our findings lend support to the emerging notion that H3.3 has multiple functions in distinct genomic locations that are not always correlated with an “active” chromatin state. Native ChIP analysis of three histone post-translational modifications (H3K4me3, H3K27me3, H3K27ac) in two mouse embryonic stem cell (ESC) lines (control and H3.3-depleted). Inputs sequenced as control. Native ChIP analysis of H3.3B-HA in control and Suz12-/- ESCs. Crosslinking ChIP analysis of histone H3 using a general H3 antibody in two ESC lines (control and H3.3-depleted). Crosslinking ChIP analysis Hira, UTX, and Jmjd3 in wild type and H3.3 KO ESCs.

2013-09-30 | E-GEOD-42152 | biostudies-arrayexpress

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