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Mus musculus

ABSTRACT: In vitro expansion of mouse primordial germ cell‐like cells recapitulates an epigenetic blank slate [RNA-Seq]

PROVIDER: PRJNA345475 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR4345540.fastq.gz	Fastqsanger.gz
	SRR4345550.fastq.gz	Fastqsanger.gz
	SRR4345560.fastq.gz	Fastqsanger.gz
	SRR4345570.fastq.gz	Fastqsanger.gz
	SRR4345580.fastq.gz	Fastqsanger.gz

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Project description:In vitro expansion of mouse primordial germ cell‐like cells recapitulates an epigenetic blank slate [ChIP-Seq]

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In vitro expansion of mouse primordial germ cell‐like cells recapitulates an epigenetic blank slate [RNA-Seq]

Project description:The expansion of primordial germ cells (PGCs), the precursors for the oocytes and spermatozoa, is a key challenge in reproductive biology/medicine. Using a chemical screening exploiting PGC‐like cells (PGCLCs) induced from mouse embryonic stem cells (ESCs), we here identify key signaling pathways critical for PGCLC proliferation. We show that the combinatorial application of Forskolin and Rolipram, which stimulate cAMP signaling via different mechanisms, expands PGCLCs up to ~50‐fold in culture. The expanded PGCLCs maintain robust capacity for spermatogenesis, rescuing the fertility of infertile mice. Strikingly, during expansion, PGCLCs comprehensively erase their DNA methylome, including parental imprints, in a manner that precisely recapitulates genome‐wide DNA demethylation in gonadal germ cells, while essentially maintaining their identity as sexually uncommitted PGCs, apparently through appropriate histone modifications. By establishing a paradigm for PGCLC expansion, our system reconstitutes the epigenetic “blank slate” of the germ line, an immediate precursory state for sexually dimorphic differentiation.

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