国际生殖健康/计划生育 ›› 2021, Vol. 40 ›› Issue (4): 306-309.doi: 10.12280/gjszjk.20200653

• 综述 • 上一篇    下一篇

m6A动态调控网络在生殖系统中的作用

张萌卉, 刘笑聪, 郭艺红()   

  1. 450052 郑州大学第一附属医院
  • 收稿日期:2020-11-19 出版日期:2021-07-15 发布日期:2021-07-27
  • 通讯作者: 郭艺红 E-mail:13613863710@163.com

N6-Methyladenosine in Reproductive System: Effect and Regulation

ZHANG Meng-hui, LIU Xiao-cong, GUO Yi-hong()   

  1. The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
  • Received:2020-11-19 Published:2021-07-15 Online:2021-07-27
  • Contact: GUO Yi-hong E-mail:13613863710@163.com

摘要:

N6-甲基腺嘌呤(N6-methyladenosine,m6A)是真核生物中普遍存在的RNA修饰。m6A修饰在甲基化酶、去甲基化酶和结合蛋白的动态调控下,参与RNA剪接、出核、翻译等多种RNA代谢过程。近年研究表明,在卵母细胞发育成熟和精子发生等生殖过程中,RNA m6A修饰发挥不可或缺的作用。在卵母细胞成熟过程中,m6A动态调控网络通过参与RNA代谢过程,影响染色体、纺锤体组装,妨碍减数分裂进程,进而使卵泡发育受阻。颗粒细胞中m6A水平异常引起的颗粒细胞凋亡与早发性卵巢功能不全(POI)、多囊卵巢综合征(PCOS)等卵巢功能损害的疾病相关。在男性生殖系统中,m6A相关酶缺陷引起小鼠精子活力降低、数量和形态异常,人类弱精子症患者精液中m6A水平升高。人工智能等新技术与m6A测序技术的结合为未来m6A动态网络的探索提供了新的方向。

关键词: N6-甲基腺嘌呤, RNA, 卵母细胞, 精子, 精子发生

Abstract:

N6-methyladenosine (m6A) is the most common RNA modification in eukaryotic cells. Under the dynamic regulation of methylase, demethylase and binding protein, m6A modification is involved in RNA metabolism processes, such as RNA splicing, nucleation and translation and so on. In recent years, many studies have shown that the RNA m6A modification plays an indispensable role in the reproductive processes, such as oocyte maturation and spermatogenesis. During oocyte maturation, the dynamic regulation network of m6A affects the assembly of chromosomes and spindles, interferes with meiosis and impedes the development of follicles. In granulosa cells, apoptosis of granulosa cells caused by the abnormal m6A is related to POI and PCOS. In the male reproductive system, the deficiency of m6A-related enzyme could damage the motility, number and morphology of sperm in mice, while the m6A level in semen was increased in patients with asthenospermia. The combination of new technologies such as artificial intelligence and m6A sequencing technology provides a new direction for the exploration of m6A dynamic network in the future.

Key words: N6-methyladenosine, RNA, Oocytes, Spermatozoa, Spermatogenesis