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Published on: January 12, 2020
[Ovary genes and molecular pathology]
Sophie Christin-Maitre1, Nathalie Ronci-Chaix, Philippe Bouchard
1Service d'Endocrinologie, Unité EA1533 Génétique de la Reproduction Humaine, Hôpital Saint-Antoine, 184, rue du faubourg Saint-Antoine, 75012 Paris.
Abstract:
In the ovary, primordial follicles have to pass different stages in order to become preovulatory follicles. In the past few years, new genes and therefore new proteins have been recognized as major players in folliculogenesis. Atm, kit ligand and its receptor c-kit are necessary for the maintenance of ovarian follicle pool. GDF-9, BMP15, originating from the oocyte play a major role in early folliculogenesis. Pro and antiapoptotic proteins such as Bax and Bcl2 complete in granulosa cells, in order to maintain or not the follicle alive. FSH receptor is necessary for final follicular maturation, from the preantral stage and beyond. LH receptor is necessary for follicle ovulation. However, new genes and their regulation need to be identified as many ovarian diseases such as premature ovarian failure are not yet clarified.
Insights
Understanding ovarian follicle development is crucial. Key genes like Atm, kit ligand, and growth differentiation factor 9 (GDF-9) are vital for maintaining the ovarian follicle pool and early folliculogenesis.
Area of Science:
- Reproductive biology and molecular endocrinology, focusing on ovarian physiology.
Context:
- Folliculogenesis, the process of ovarian follicle development, involves intricate molecular signaling pathways.
- Recent discoveries highlight novel genes and proteins crucial for various stages of follicle maturation.
Purpose:
- To review the known molecular regulators of folliculogenesis, from primordial to preovulatory stages.
- To emphasize the need for identifying new genes and regulatory mechanisms in ovarian diseases.
Summary:
- Key genes such as Atm, kit ligand, c-kit, growth differentiation factor 9 (GDF-9), bone morphogenetic protein 15 (BMP15), Bax, Bcl2, and receptors for follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are essential for ovarian follicle development and maintenance.
- These factors regulate granulosa cell survival, oocyte-granulosa cell communication, and final follicular maturation and ovulation.
Impact:
- Elucidating these pathways is critical for understanding and potentially treating ovarian disorders like premature ovarian failure.
- Identifying novel genetic factors will advance reproductive medicine and fertility research.
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