期刊
CELLS
卷 10, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/cells10092292
关键词
cumulus cells; expansion; oocyte; embryo; pregnancy
类别
资金
- National Key R&D Program of China [2017YFC1001601, 2017YFC1002003]
Cumulus cells play a vital role in supporting oocyte growth, maturation, and developmental competence. Their function is essential for oocyte meiotic maturation, ovulation, fertilization, and early embryo development. Understanding the role of cumulus cells is crucial for predicting oocyte quality, embryonic development competence, and pregnancy outcomes in reproductive medicine and infertility treatment.
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.
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