期刊
REPRODUCTION
卷 150, 期 3, 页码 R109-R120出版社
BIOSCIENTIFICA LTD
DOI: 10.1530/REP-15-0180
关键词
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资金
- March of Dime Research Grant [6-FY11-367]
- NIH [1R21HD078942-01]
Successful mammalian development requires descendants of single-cell zygotes to differentiate into diverse cell types even though they contain the same genetic material. Preimplantation dynamics are first driven by the necessity of reprogramming haploid parental epigenomes to reach a totipotent state. This process requires extensive erasure of epigenetic marks shortly after fertilization. During the few short days after formation of the zygote, epigenetic programs are established and are essential for the first lineage decisions and differentiation. Here we review the current understanding of DNA methylation and histone modification dynamics responsible for these early changes during mammalian preimplantation development. In particular, we highlight insights that have been gained through next-generation sequencing technologies comparing human embryos to other models as well as the recent discoveries of active DNA demethylation mechanisms at play during preimplantation.
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