| Literature DB >> 23942453 |
Abstract
Fertilization triggers a complex cellular programme that transforms two highly specialized meiotic germ cells, the oocyte and the sperm, into a totipotent mitotic embryo. Linkages between sister chromatids are remodelled to support the switch from reductional meiotic to equational mitotic divisions; the centrosome, which is absent from the egg, is reintroduced; cell division shifts from being extremely asymmetric to symmetric; genomic imprinting is selectively erased and re-established; and protein expression shifts from translational control to transcriptional control. Recent work has started to reveal how this remarkable transition from meiosis to mitosis is achieved.Entities:
Mesh:
Year: 2013 PMID: 23942453 PMCID: PMC4021448 DOI: 10.1038/nrm3643
Source DB: PubMed Journal: Nat Rev Mol Cell Biol ISSN: 1471-0072 Impact factor: 94.444