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The ontogeny of cKIT+ human primordial germ cells proves to be a resource for human germ line reprogramming, imprint erasure and in vitro differentiation.

Authors
  • Gkountela, Sofia1
  • Li, Ziwei
  • Vincent, John J
  • Zhang, Kelvin X
  • Chen, Angela
  • Pellegrini, Matteo
  • Clark, Amander T
  • 1 Department of Molecular Cell and Developmental Biology, University of California Los Angeles, Los Angeles, California 90095, USA.
Type
Published Article
Journal
Nature Cell Biology
Publisher
Springer Nature
Publication Date
Jan 01, 2013
Volume
15
Issue
1
Pages
113–122
Identifiers
DOI: 10.1038/ncb2638
PMID: 23242216
Source
Medline
License
Unknown

Abstract

The generation of research-quality, clinically relevant cell types in vitro from human pluripotent stem cells requires a detailed understanding of the equivalent human cell types. Here we analysed 134 human embryonic and fetal samples from 6 to 20 developmental weeks and identified the stages at which cKIT(+) primordial germ cells (PGCs), the precursors of gametes, undergo whole-genome epigenetic reprogramming with global depletion of 5mC, H3K27me3 and H2A.Z, and the time at which imprint erasure is initiated and 5hmC is present. Using five alternative in vitro differentiation strategies combined with single-cell microfluidic analysis and a bona fide human cKIT(+) PGC signature, we show the stage of cKIT(+) PGC formation in the first 16 days of differentiation. Taken together, our study creates a resource of human germ line ontogeny that is essential for future studies aimed at in vitro differentiation and unveiling the mechanisms necessary to pass human DNA from one generation to the next.

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