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Jun-mediated changes in cell adhesion contribute to embryonic stem cell exit from ground state pluripotency

ABSTRACT: Jun-mediated changes in cell adhesion contribute to embryonic stem cell exit from ground state pluripotency

PROVIDER: PRJEB11808 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR1141940.fastq.gz	Fastqsanger.gz
	ERR1141941.fastq.gz	Fastqsanger.gz
	ERR1141942.fastq.gz	Fastqsanger.gz
	ERR1141933.fastq.gz	Fastqsanger.gz
	ERR1141943.fastq.gz	Fastqsanger.gz

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Jun-mediated changes in cell adhesion contribute to embryonic stem cell exit from ground state pluripotency

Project description:Embryonic stem cells (ESC) are able to give rise to any somatic cell type. A lot is known about how ESC pluripotency is maintained, but comparatively less is known about how differentiation is promoted. Cell fate decisions are regulated by interactions between signalling and transcriptional networks. Recent studies have shown that the overexpression or downregulation of the transcription factor Jun can affect the ESC fate. Here we have focussed on the role of the Jun in the exit of mouse ESCs from ground state pluripotency and the onset of early differentiation. Transcriptomic analysis of differentiating ESCs reveals that Jun is required to upregulate a programme of genes associated with cell adhesion as ESCs exit the pluripotent ground state.

2015-12-07 | E-MTAB-4068 | biostudies-arrayexpress

Jun-Mediated Changes in Cell Adhesion Contribute to Mouse Embryonic Stem Cell Exit from Ground State Pluripotency.

Project description:Embryonic stem cells (ESC) are able to give rise to any somatic cell type. A lot is known about how ESC pluripotency is maintained, but comparatively less is known about how differentiation is promoted. Cell fate decisions are regulated by interactions between signaling and transcriptional networks. Recent studies have shown that the overexpression or downregulation of the transcription factor Jun can affect the ESC fate. Here we have focussed on the role of the Jun in the exit of mouse ESCs from ground state pluripotency and the onset of early differentiation. Transcriptomic analysis of differentiating ESCs reveals that Jun is required to upregulate a programme of genes associated with cell adhesion as ESCs exit the pluripotent ground state. Several of these Jun-regulated genes are shown to be required for efficient adhesion. Importantly this adhesion is required for the timely regulated exit of ESCs from ground state pluripotency and the onset of early differentiation events. Stem Cells 2016;34:1213-1224.

| S-EPMC4864893 | biostudies-other

Genome-scale screens identify JNK/JUN signaling as a barrier for pluripotency exit and endoderm differentiation

Project description:Human embryonic and induced pluripotent stem cells (hESCs/hiPSCs) hold great promise for cell-based therapies and drug discovery. However, homogeneous differentiation remains a major challenge, highlighting the need for understanding developmental mechanisms. We performed genome-scale CRISPR screens to uncover regulators of definitive endoderm (DE) differentiation, which unexpectedly uncovered five JNK/JUN family genes as key barriers of DE differentiation. The JNK/JUN pathway does not act through directly inhibiting the DE enhancers. Instead JUN co-occupies ESC enhancers with OCT4, NANOG and SMAD2/3, and specifically inhibits the exit from the pluripotent state by impeding the decommissioning of ESC enhancers and inhibiting the reconfiguration of SMAD2/3 chromatin binding from ESC to DE enhancers. Therefore, the JNK/JUN pathway safeguards pluripotency from precocious DE differentiation. Direct pharmacological inhibition of JNK significantly improves the efficiencies of generating DE and DE-derived pancreatic and lung progenitor cells, highlighting the potential of harnessing the knowledge from developmental studies for regenerative medicine.

2019-03-18 | GSE109524 | GEO

DLX3 alters transcriptomic profile of adhesion, cell cycle, and cell death in Squamous Cell Carcinoma Cells

Project description:Reinstatement of DLX3 into SCC13 cells upregulates genes involved with cell cycle exit, signaling, and adhesion whiles downregulates genes involved with cell death, proliferation, and movement.

2017-02-09 | GSE67713 | GEO

Tracking the embryonic stem cell transition from ground state pluripotency

Project description:Mouse embryonic stem (ES) cells are locked into self-renewal by shielding from inductive cues. Release from this ground state in minimal conditions offers a system for delineating developmental progression from naive pluripotency. Here we examined the initial transition process. The ES cell population behaves asynchronously. We therefore exploited a short-half-life Rex1::GFP reporter to isolate cells either side of exit from naive status. Differentiation of Rex1-GFPd2 ES cells was initiated by withdrawing 2i (Kalkan et al., 2016). Undifferentiated 2i-cells and post-2i withdrawal differentiating populations (16h, 25h-Rex1-High, 25h-Rex1-Low) were subjected to proteomic analysis by Mass Spectrometry.

2017-02-22 | PXD005581 | Pride

p110α of PI3K is Indispensable for Quiescence Exit in Adult Muscle Satellite Cells

Project description:Adult muscle stem cells (MuSC) are quiescent with a localization between myofibers and basal lamina. Upon injury, MuSC exit quiescence, reenter cell cycle, expand and differentiate for muscle regeneration. By using genetic mouse model, we identified p110α/mTORC1 signaling as a indispensable pathway that permits quiescence exit and cell cycle reentry. In order to dig out the downstream effectors, we compared the transcriptome of freshly isolated MuSC from Ctrl (p110α-f/+:R26-YFP/YFP:Pax7-CreER/CreER) to MuSC-specific p110α-null (iKO, p110α-f/f:R26-YFP/YFP:Pax7-CreER/CreER) mice by RNA-sequencing, and AP1 target genes were dramatically down-regulated in iKO MuSC. Restoration of Jun could significantly rescue the cell cycle reentry defect in iKO MuSC. In summary, we provided a p110α/mTORC1/Jun axis required for quiecence exit and cell cycle reentry of MuSC.

2018-02-25 | GSE109472 | GEO

Genome-wide maps of H3K27ac, H3K4me1, JUN and p-JUN in JUN overexpressed or JUN inactivated fibroblasts

Project description:To further dissect whether and how activated JUN reconfigures the chromatin landscape, we performed Chromatin Immunoprecipitation (ChIP)-seq analyses for H3K4me1 and H3K27ac. Based on the significant increase of H3K27ac levels at H3K4me1+ sites, we identified 3,017 JUN-activated enhancers in JUN WT cells. In contrast, JUN AA fails to significantly induce H3K27ac accumulation at these regions. Their enrichment levels at JUN-activated enhancers were significantly decreased after JNKi treatment. Besides, these enhancers are directly driven by JUN, especially phosphorylated JUN.

2022-12-09 | GSE196345 | GEO

Genome-scale screens identify JNK/JUN signaling as a barrier for pluripotency exit and endoderm differentiation

Project description:Genome-scale screens identify JNK/JUN signaling as a barrier for pluripotency exit and endoderm differentiation

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Transcriptome analysis of JUN overexpressed or JUN inactivated fibroblasts

Project description:To examine the effects of phosphorylated JUN-mediated enhancers activation on gene expression, we conducted RNA-seq analysis in JUN wildtype (WT) or JUN inactive mutant (JUN AA) overexpressed MRC5 cells. The expression levels of genes associated with JUN-activated enhancers are significantly upregulated in JUN WT cells rather than in JUN AA cells. To quantify the effects of JUN inactivation on gene expression, we also performed RNA-seq analysis in JNKi-treated induced CAFs (iCAFs). We observed that JNKi significantly reduced expression levels of JUN-activated enhancers-associated genes.

2022-12-09 | GSE196351 | GEO

Genome-wide maps of H3K27ac, H3K4me1, JUN and p-JUN in JUN overexpressed or JUN inactivated fibroblasts

Project description:Genome-wide maps of H3K27ac, H3K4me1, JUN and p-JUN in JUN overexpressed or JUN inactivated fibroblasts

| PRJNA804495 | ENA