Review
Genetic research progress on abnormal human oocyte formation, fertilization and early embryo development
Sun Yiming, Xu Congjian, Wang Lei
Published 2020-11-25
Cite as Chin J Reprod Contracep, 2020, 40(11): 943-951. DOI: 10.3760/cma.j.cn101441-20191112-00506
Abstract
Successful reproduction requires gamete maturation, fertilization, and early embryonic development. Oocyte maturation consists of a series of morphological and molecular changes. Oocytes undergo germinal vesicle stage, metaphase I, and metaphase II. Following the fusion of a sperm with a metaphase II oocyte, the embryo starts to develop, and gradually forms various organs and tissues. Therefore, failure in any of the steps will lead to infertility. However, the genetic aetiology of human oocyte maturation arrest is still largely unknown. Maternal RNA and protein play a vital role in maintaining normal early embryonic development. The mutation of subcortical maternal complex component genes and other specific genes are related to female infertility characterized by repeated failure ofin vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). This article reviews the recent studies of the genetic basis that cause abnormal human oocyte formation, fertilization and early embryo development.
Key words:
Oocyte; Oocyte maturation arrest; Female infertility; Genetics
Contributor Information
Sun Yiming
Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200021, China
Xu Congjian
Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200021, China
Wang Lei
State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China