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Long-term expansion with germline potential of human primordial germ cell-like cells in vitro

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE147500 | GEO | 2020/09/23

REPOSITORIES: GEO

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Long-term expansion with germline potential of human primordial germ cell-like cells in vitro.

Project description: Not available

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Long-term expansion with germline potential of human primordial germ cell-like cells in vitro [aCGH]

Project description:Human germ cells perpetuate human genetic and epigenetic information. However, the underlying mechanism remains elusive, due to a lack of appropriate experimental systems. Here, we show that human primordial germ cell‐like cells (hPGCLCs) derived from human‐induced pluripotent stem cells (hiPSCs) can be propagated to at least ~10^6‐fold over a period of 4 months under a defined condition in vitro. During expansion, hPGCLCs maintain an early hPGC‐like transcriptome and preserve their genome‐wide DNA methylation profiles, most likely due to retention of maintenance DNA methyltransferase activity. These characteristics contrast starkly with those of mouse PGCLCs, which, under an analogous condition, show a limited propagation (up to ~50‐fold) and persist only around 1 week, yet undergo cell‐autonomous genome‐wide DNA demethylation. Importantly, upon aggregation culture with mouse embryonic ovarian somatic cells in xenogeneic‐reconstituted ovaries, expanded hPGCLCs initiate genome‐wide DNA demethylation and differentiate into oogonia/gonocyte‐like cells, demonstrating their germline potential. By creating a paradigm for hPGCLC expansion, our study uncovers critical divergences in expansion potential and the mechanism for epigenetic reprogramming between the human and mouse germ cell lineage.

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Long-term expansion with germline potential of human primordial germ cell-like cells in vitro

Project description:Long-term expansion with germline potential of human primordial germ cell-like cells in vitro

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