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Maternal RNF114 plays critical roles in activation of the early zygotic genome through promoting ubiquitin-mediated degradation of Chromobox protein CBX5

ABSTRACT: Zygotic genomic activation (ZGA) is a landmark event in the maternal-to-zygotic transition (MZT), and the regulation of ZGA by maternal factors remains to be elucidated. In this study, the depletion of maternal RNF114 led to 2-cell embryos developmental arrest in mice. RNF114 was proven to play an important role in major ZGA using ethynyl uridine (EU) incorporation and transcriptome analysis. To study the underlying mechanism, we performed protein profiling in mature oocytes and found a potential substrate for RNF114, Chromobox protein CBX5, whose ubiquitination and degradation was regulated by RNF114. Furthermore, the overexpression of CBX5 prevented embryonic development and impeded major ZGA. In summary, our study reveals that maternal RNF114, as a ubiquitin E3 ligase, plays a precise role in mediating the degradation of repressive protein CBX5 during MZT, the misregulation of which may impede the appropriate activation of major ZGA in mouse embryos.

ORGANISM(S): Mus musculus

PROVIDER: GSE164532 | GEO | 2021/06/16

REPOSITORIES: GEO

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Quantitative proteomics reveals the dynamic proteome landscape of zebrafish embryos during maternal-to-zygotic transition and its relationship to zygotic genome activation

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Nanog, SoxB1 and Pou5f1/Oct4 regulate widespread zygotic gene activation during the maternal-to-zygotic transition

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2017-03-27 | PXD006098 | Pride

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