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Chromatin activity of IκBα mediates the exit from naïve pluripotency (ChIP-seq Histone marks)

ABSTRACT: Chromatin activity of IκBα mediates the exit from naïve pluripotency (ChIP-seq Histone marks)

PROVIDER: PRJNA999704 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25451948.fastq.gz	Fastqsanger.gz
	SRR25451949.fastq.gz	Fastqsanger.gz
	SRR25451950.fastq.gz	Fastqsanger.gz
	SRR25451951.fastq.gz	Fastqsanger.gz
	SRR25451952.fastq.gz	Fastqsanger.gz

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Chromatin activity of IκBα mediates the exit from naïve pluripotency (ChIP-seq Histone marks)

Project description:Inflammatory signals are key in development and cell differentiation but their orchestration with pluripotency and stemness signals is poorly understood. Our previous work identified a chromatin function of IκBα, the NF-κB inhibitor, that is crucial for differentiation in different types of somatic stem cells. Here we demonstrate that deficiency of IκBα imposes a profound chromatin rewiring defect that impacts on DNA methylation, histone post-translational modifications and transcriptional regulation, stabilizing mouse embryonic stem cells (ESCs) in a ground state of pluripotency while preventing them from pluripotency exit and differentiation. By engineering separation-of-function mutants of IκBα with specific binding to either NF-κB or histones, we demonstrate that regulation of pluripotency state by IκBα is independent of NF-kB but requires the chromatin-related IκBα function.

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Chromatin activity of IκBα mediates the exit from naïve pluripotency

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Chromatin activity of IκBα mediates the exit from naïve pluripotency (Methylation array)

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Chromatin activity of IκBα mediates the exit from naïve pluripotency (RNA-Seq)

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Foxd3 promotes the exit from naïve pluripotency and prevents germline specification through enhancer decommissioning [ChIP-Seq]

Project description:Following implantation, mouse epiblast cells transit from a naïve to a primed state in which they are competent for both somatic and primordial germ cell (PGC) specification. Using mouse embryonic stem cells (mESC) as an in vitro model to study the transcriptional regulatory principles orchestrating peri-implantation development, here we show that the transcription factor Foxd3 is necessary for the exit from naïve pluripotency and the progression to a primed pluripotent state. During this transition, Foxd3 acts as a repressor that dismantles a significant fraction of the naïve pluripotency expression program through the decommissioning of active enhancers associated with key naïve pluripotency and early germline genes. Subsequently, Foxd3 needs to be silenced in primed pluripotent cells to allow the reactivation of relevant genes required for proper PGC specification. Our findings uncover a wave of activation-deactivation of Foxd3 as a crucial step for the exit from naïve pluripotency and subsequent PGC specification. Genome-wide binding profiles for Foxd3 were investigated in mouse embryonic stem cells (mESC). A mESC line (FH-Foxd3 mESC line) expressing exogenous Foxd3 tagged with Flag and HA epitope (FH-Foxd3) at nearly endogenous levels was generated. ChIPs were performed against FH-Foxd3 using anti-HA or anti-Flag antibodies.

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Foxd3 promotes the exit from naïve pluripotency and prevents germline specification through enhancer decommissioning [RNA-Seq]

Project description:Following implantation, mouse epiblast cells transit from a naïve to a primed state in which they are competent for both somatic and primordial germ cell (PGC) specification. Using mouse embryonic stem cells (mESC) as an in vitro model to study the transcriptional regulatory principles orchestrating peri-implantation development, here we show that the transcription factor Foxd3 is necessary for the exit from naïve pluripotency and the progression to a primed pluripotent state. During this transition, Foxd3 acts as a repressor that dismantles a significant fraction of the naïve pluripotency expression program through the decommissioning of active enhancers associated with key naïve pluripotency and early germline genes. Subsequently, Foxd3 needs to be silenced in primed pluripotent cells to allow the reactivation of relevant genes required for proper PGC specification. Our findings uncover a wave of activation-deactivation of Foxd3 as a crucial step for the exit from naïve pluripotency and subsequent PGC specification. mRNA profiles were generated by RNA-seq in duplicates for each of the following mESC lines: Foxd3fl/fl;Cre-ER mESC maintained in "Serum+LIF" (SL) treated with TM for three days (SL Foxd3-/-); untreated Foxd3fl/fl;Cre-ER SL mESC (SL Foxd3fl/fl); tetON Foxd3 SL mESC treated with Dox for three days; WT SL mESC treated with Dox for three days; Foxd3fl/fl;Cre-ER mESC maintained in "2i+LIF" (2i) treated with TM for three days (2i Foxd3-/-); untreated Foxd3fl/fl;Cre-ER 2i mESC (2i Foxd3fl/fl).

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Foxd3 promotes the exit from naïve pluripotency and prevents germline specification through enhancer decommissioning [RNA-Seq]

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