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GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [WT & KO]

ABSTRACT: GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [WT & KO]

PROVIDER: PRJNA448903 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6949380.fastq.gz	Fastqsanger.gz
	SRR6949381.fastq.gz	Fastqsanger.gz
	SRR6949373.fastq.gz	Fastqsanger.gz
	SRR6949374.fastq.gz	Fastqsanger.gz
	SRR6949375.fastq.gz	Fastqsanger.gz

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GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency

Project description:GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency

| PRJNA360131 | ENA

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [ESC & EpiLC]

Project description:GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [ESC & EpiLC]

| PRJNA448904 | ENA

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [ChIP-Seq]

Project description:During early development, pluripotent cells of the epiblast show extensive rewiring of enhancers with little associated change in gene expression. The mechanisms underlying and purpose of this rewiring are largely unknown. Here we identified a transcription factor, GRHL2, that is both necessary and sufficient to activate latent enhancers during the transition from naïve embryonic stem cells (ESC) to primed epiblast cells (EpiC). GRHL2 is necessary to maintain expression of its targets in EpiCs. However, these genes are already expressed at equivalent levels in ESCs, suggesting these genes switch enhancer usage during the transition. Identification of alternative enhancers driving these genes in ESCs uncovered an enrichment for the ESC-specific KLF transcription factors. While many KLF targets remain expressed in EpiCs, GRHL2 only regulates a specific subset promoting an epithelial program. These data suggest a model where a large naïve-specific transcriptional network is partitioned into smaller networks to uncouple their regulation in EpiCs, providing more flexibility in gene regulation during lineage specification.

2018-07-12 | GSE92745 | GEO

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [WT & KO]

2018-07-12 | GSE112751 | GEO

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [ESC & EpiLC]

2018-07-12 | GSE112749 | GEO

GRHL2-Dependent Enhancer Switching Maintains a Pluripotent Stem Cell Transcriptional Subnetwork after Exit from Naive Pluripotency.

Project description:The enhancer landscape of pluripotent stem cells undergoes extensive reorganization during early mammalian development. The functions and mechanisms behind such reorganization, however, are unclear. Here, we show that the transcription factor GRHL2 is necessary and sufficient to activate an epithelial subset of enhancers as naive embryonic stem cells (ESCs) transition into formative epiblast-like cells (EpiLCs). Surprisingly, many GRHL2 target genes do not change in expression during the ESC-EpiLC transition. Instead, enhancers regulating these genes in ESCs diminish in activity in EpiLCs while GRHL2-dependent alternative enhancers become activated to maintain transcription. GRHL2 therefore assumes control over a subset of the naive network via enhancer switching to maintain expression of epithelial genes upon exit from naive pluripotency. These data evoke a model where the naive pluripotency network becomes partitioned into smaller, independent networks regulated by EpiLC-specific transcription factors, thereby priming cells for lineage specification.

| S-EPMC6456389 | biostudies-literature

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [Illumina MouseRef-8 v2.0 expression]

2018-07-12 | GSE93146 | GEO

GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency

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

2018-07-12 | GSE93147 | GEO

Grainyhead-like 2 (GRHL2) maintains the epithelial status of ovarian cancer through miR-200-ZEB1 regulatory networks (expression)

Project description:Epithelial ovarian cancer (EOC) is clinically heterogeneous, comprising different histological and biological subtypes. Multiple studies have implicated epithelial-mesenchymal transition (EMT), a biological process by which polarized epithelial cells convert into a mesenchymal phenotype, to contribute significantly to this molecular heterogeneity of EOC. From gene expression analyses of a collection of EMT-characterized EOC cell lines, we found that the expression of the transcription factor Grainyhead-like 2 (GRHL2) correlates with E-cadherin expression and the epithelial phenotype. EOC tumors with lower levels of GRHL2 are associated with the Mes (mesenchymal) molecular subtype and show poorer overall survival in patients. Here, we demonstrate that shRNA-mediated knockdown of GRHL2 in EOC cells with an epithelial phenotype resulted in EMT changes, with increased cell migration, invasion and motility. By ChIP-sequencing and gene expression microarray, we identified a variety of target genes regulated by GRHL2, including protein-coding and non-coding genes. Our data suggest that GRHL2 maintains the epithelial phenotype of EOC cells through the regulatory networks of miR-200b/a, ZEB1 and E-cadherin. These findings support GRHL2 as a crucial player in the molecular heterogeneity of EOC. 7 samples were analyzed (shNon control in duplicates; shGRHL2 #10 in duplicates, shGRHL2 #12 in triplicates)

2016-02-25 | E-GEOD-71017 | biostudies-arrayexpress

Mus musculus

Project description:GRHL2-dependent enhancer switching maintains a pluripotent stem cell transcriptional subnetwork after exit from naïve pluripotency [ChIP-Seq]

| PRJNA358507 | ENA

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