遗传 ›› 2024, Vol. 46 ›› Issue (3): 209-218.doi: 10.16288/j.yczz.23-248

• 综述 • 上一篇    下一篇

N6-腺苷甲基化修饰及其对LINE-1的调控机制

张傲(), 岑山(), 李晓宇()   

  1. 中国医学科学院&北京协和医学院,医药生物技术研究所免疫生物学室,北京 100050
  • 收稿日期:2023-11-10 修回日期:2023-12-28 出版日期:2024-03-20 发布日期:2024-01-19
  • 通讯作者: 岑山,李晓宇 E-mail:za1632649341@163.com;shancen@hotmail.com;xiaoyulik@hotmail.com
  • 作者简介:张傲,硕士研究生,专业方向:LINE-1与肿瘤维持机制的研究。E-mail: za1632649341@163.com
  • 基金资助:
    国家自然科学基金面上项目(31870164)

N6-adenosine methylation and the regulatory mechanism on LINE-1

Ao Zhang(), Shan Cen(), Xiaoyu Li()   

  1. Department of Immunology, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
  • Received:2023-11-10 Revised:2023-12-28 Published:2024-03-20 Online:2024-01-19
  • Contact: Shan Cen, Xiaoyu Li E-mail:za1632649341@163.com;shancen@hotmail.com;xiaoyulik@hotmail.com
  • Supported by:
    National Natural Science Foundation of China(31870164)

摘要:

长散布元件-1 (long interspersed elements-1,LINE-1)是现今在人类基因组中唯一具有自主转座能力的转座子,其转座会引起细胞基因组结构和功能的改变,是导致多种严重疾病的重要因素。在转座过程中,LINE-1 mRNA是转座中间体的核心,宿主细胞对其进行相关修饰直接影响转座。N6-腺苷甲基化修饰(m6A)是真核细胞RNA上最丰富且动态可逆的表观遗传修饰。目前发现m6A修饰也存在于LINE-1 mRNA上,参与LINE-1整个生命周期的调控,影响其转座和基因组中LINE-1相邻基因的表达,进而影响基因组稳定性、细胞自我更新与分化潜能,在人类发育和疾病中具有重要作用。本文介绍了LINE-1 m6A修饰的位置、功能以及相关机制,并总结了LINE-1的m6A修饰对其转座调控的研究进展,以期为相关疾病发生发展的机制研究和治疗提供新的思路。

关键词: m6A修饰, 逆转录转座子, LINE-1, 基因组, 基因组稳定性

Abstract:

Long interspersed elements-1(LINE-1) is the only autonomous transposon in human genome,and its retrotransposition results in change of cellular genome structure and function, leading occurrence of various severe diseases. As a central key intermediated component during life cycle of LINE-1 retrotransposition, the host modification of LINE-1 mRNA affects the LINE-1 transposition directly. N6-adenosine methylation(m6A), the most abundant epigenetic modification on eukaryotic RNA, is dynamically reversible. m6A modification is also found on LINE-1 mRNA, and it participants regulation of the whole LINE-1 replication cycle, with affecting LINE-1 retrotransposition as well as its adjacent genes expression, followed by influencing genomic stability, cellular self-renewal, and differentiation potential, which plays important roles in human development and diseases. In this review, we summarize the research progress in LINE-1 m6A modification, including its modification positions, patterns and related mechanisms, hoping to provide a new sight on the mechanism research and treatment of related diseases.

Key words: m6A modification, retrotransposon, LINE-1, genome, genome stability