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Organisation du génome embryonnaire après la fécondation chez les mammifères

Abstract : In mammals, the embryonic genome is first transcriptionnally inactive after fertilization. Embryonic development is then strictly dependent on the maternally inherited RNA and proteins accumulated before ovulation and present in the oocyte cytoplasm. The onset of embryonic gene expression is initiated later during development, i.e. during the “embryonic genome activation (EGA)”. EGA takes place at various preimplantation stages according to species and is dependent on the presence of the basal transcriptional machinery components but also on parental genomes reorganizations after fertilization. Indeed, during the first embryonic cycles, nuclei undergo intense remodeling that could be a key regulator of embryonic development.
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Submitted on : Saturday, May 30, 2020 - 9:43:26 PM
Last modification on : Thursday, August 5, 2021 - 3:46:51 AM

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Nathalie Beaujean, Karlla Mason, Amélie Bonnet-Garnier, Juliette Salvaing, Marie Pascale Debey. Organisation du génome embryonnaire après la fécondation chez les mammifères. Biologie Aujourd'hui, EDP sciences, 2010, 204 (3), pp.205-213. ⟨10.1051/jbio/2010018⟩. ⟨hal-02661114⟩

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