Early programming of the oocyte epigenome temporally controls late prophase I transcription and chromatin remodelling.

ABSTRACT: Oocytes are arrested for long periods of time in the prophase of the first meiotic division (prophase I). As chromosome condensation poses significant constraints to gene expression, the mechanisms regulating transcriptional activity in the prophase I-arrested oocyte are still not entirely understood. We hypothesized that gene expression during the prophase I arrest is primarily epigenetically regulated. Here we comprehensively define the Drosophila female germ line epigenome throughout oogenesis and show that the oocyte has a unique, dynamic and remarkably diversified epigenome characterized by the presence of both euchromatic and heterochromatic marks. We observed that the perturbation of the oocyte's epigenome in early oogenesis, through depletion of the dKDM5 histone demethylase, resul

SUBMITTER: Navarro-Costa P 

PROVIDER: S-EPMC4987523 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature