The Function of Cumulus Cells in Oocyte Growth and Maturation and in Subsequent Ovulation and Fertilization

The Function of Cumulus Cells in Oocyte Growth and Maturation and in Subsequent Ovulation and Fertilization

Cumulus cells (CCs) originating from undifferentiated granulosa cells (GCs) differentiate in mural granulosa cells (MGCs) and CCs during antrum formation in the follicle by the distribution of location. CCs are supporting cells of the oocyte that protect the oocyte from the microenvironment, which h...

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Bibliographic Details
Published in:Cells (Basel, Switzerland) Switzerland), 2021-09, Vol.10 (9), p.2292
Main Authors: Turathum, Bongkoch, Gao, Er-Meng, Chian, Ri-Cheng
Format: Article
Language:eng
Subjects:
Cell differentiation
cumulus cells
embryo
Embryogenesis
expansion
Extracellular matrix
Fertilization
Follicle-stimulating hormone
Follicles
Gene expression
Granulosa cells
Infertility
Insulin
Insulin-like growth factors
Kinases
Luteinizing hormone
Maturation
Meiosis
Microenvironments
oocyte
Ovulation
Pregnancy
Proteins
Reproductive technology
Review
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Summary:Cumulus cells (CCs) originating from undifferentiated granulosa cells (GCs) differentiate in mural granulosa cells (MGCs) and CCs during antrum formation in the follicle by the distribution of location. CCs are supporting cells of the oocyte that protect the oocyte from the microenvironment, which helps oocyte growth and maturation in the follicles. Bi-directional communications between an oocyte and CCs are necessary for the oocyte for the acquisition of maturation and early embryonic developmental competence following fertilization. Follicle-stimulation hormone (FSH) and luteinizing hormone (LH) surges lead to the synthesis of an extracellular matrix in CCs, and CCs undergo expansion to assist meiotic resumption of the oocyte. The function of CCs is involved in the completion of oocyte meiotic maturation and ovulation, fertilization, and subsequent early embryo development. Therefore, understanding the function of CCs during follicular development may be helpful for predicting oocyte quality and subsequent embryonic development competence, as well as pregnancy outcomes in the field of reproductive medicine and assisted reproductive technology (ART) for infertility treatment.
ISSN:2073-4409
2073-4409