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The Transcriptome and DNA Methylome Landscapes of Human Primordial Germ Cells


The Transcriptome and DNA Methylome Landscapes of Human Primordial Germ Cells



Cell 161(6): 1437-1452



ISSN/ISBN: 0092-8674

PMID: 26046443

DOI: 10.1016/j.cell.2015.05.015

Germ cells are vital for transmitting genetic information from one generation to the next and for maintaining the continuation of species. Here, we analyze the transcriptome of human primordial germ cells (PGCs) from the migrating stage to the gonadal stage at single-cell and single-base resolutions. Human PGCs show unique transcription patterns involving the simultaneous expression of both pluripotency genes and germline-specific genes, with a subset of them displaying developmental-stage-specific features. Furthermore, we analyze the DNA methylome of human PGCs and find global demethylation of their genomes. Approximately 10 to 11 weeks after gestation, the PGCs are nearly devoid of any DNA methylation, with only 7.8% and 6.0% of the median methylation levels in male and female PGCs, respectively. Our work paves the way toward deciphering the complex epigenetic reprogramming of the germline with the aim of restoring totipotency in fertilized oocytes.

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Accession: 059034612

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