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Oocyte

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Dernière mise à jour le 8 avril 2024 - - Nous soutenir

Définitions de « oocyte »

(Microbiologie) Ovocyte : cellule germinale féminine immature.

Dans l'ombre des entrailles féminines, l'oocyte demeure la cellule germinale immature, un joyau de vie en attente d'éveil.
— (Citation fictive)

[1] Keukens A, Van Wely M, Van der Meulen C, Mochtar MH. Pre-eclampsia in pregnancies resulting from oocyte donation, natural conception or IVF: a systematic review and meta-analysis. Hum Reprod 2021; doi.org/10.1093/humrep/deab267
Genethique — PMA avec don d'ovocyte : un risque élevé de prééclampsie - Genethique
"This is the first report of anyone being able to develop fully mature and fertilisable eggs in a laboratory setting right through from the earliest stages of oocyte (immature egg) development," commented Richard Anderson of the University of Edinburgh's MRC Centre for Reproductive Health.
Scientists grow mouse eggs from stem cells in lab
Oocytes are highly specialised cells, but the mechanism by which they acquire and retain their cell fate remains incompletely understood. Sarkar et al. now show that the gene repressive trimethylation of histone H3 lysine 9 (H3K9me3) contributes to oocyte formation in Drosophila melanogaster and identify a role for the nucleopore complex (NPC) in the maintenance of H3K9me3 and gene silencing in the egg chamber.
Nature — Gene silencing during oocyte specification requires heterochromatin and nucleoporins | Nature Reviews Molecular Cell Biology
The primary oocyte is an oocyte that has begun but not completed the first maturation division; it is derived from an oogonium by differentiation near the time of birth (Dorland, 2011).
www.elsevier.com — Primary Oocyte (of Late Primary Ovarian Follicle) | Complete Anatomy

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