DNA甲基化与脊椎动物胚胎发育

doi:10.3724/SP.J.1005.2012.01108

遗传 ›› 2012, Vol. 34 ›› Issue (9): 1108-1113.doi: 10.3724/SP.J.1005.2012.01108

DNA甲基化与脊椎动物胚胎发育

杨晓丹¹, 韩威¹, 刘峰²

1. 沈阳药科大学生命科学与生物制药学院, 沈阳 110016 2. 中国科学院动物研究所生物膜与膜生物工程国家重点实验室, 北京 100101

收稿日期:2012-02-27 修回日期:2012-05-02 出版日期:2012-09-20 发布日期:2012-09-25
通讯作者: 刘峰 E-mail:liuf@ioz.ac.cn

DNA methylation in vertebrate embryogenesis

YANG Xiao-Dan¹, HAN Wei¹, LIU Feng²

1. School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China 2. State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China

Received:2012-02-27 Revised:2012-05-02 Online:2012-09-20 Published:2012-09-25

摘要/Abstract

摘要： DNA甲基化是指DNA甲基转移酶(DNMT)将DNA序列中的5′胞嘧啶转变为5′甲基胞嘧啶的化学修饰, 可以调控基因的时空特异性表达, 从而影响细胞命运决定和分化等生物学过程。近年来研究发现, DNA甲基化在脊椎动物胚胎早期发育中有重要作用, Dnmt基因的缺失会影响胚胎早期发育和多个器官的形成及分化, 如胚胎早期致死、内脏器官和神经系统终末分化缺陷以及血液发生紊乱等。文章总结了DNA甲基化转移酶在小鼠和斑马鱼发育过程中的动态变化, 并系统阐述了DNA甲基化在胚胎早期发育和器官发生中的作用, 重点揭示DNA 甲基化转移酶与组蛋白甲基化转移酶如何协同调控DNA甲基化从而影响基因转录的分子机理。DNA甲基化作为一种关键的表观遗传学因素, 全面系统地理解其在胚胎发育过程中的作用机制对靶向治疗人类相关疾病有一定的理论指导意义。

关键词: DNA甲基转移酶, 血液发生, 胚胎发育, 斑马鱼, 小鼠, DNA甲基化

Abstract: DNA methylation is an important epigenetic modification that regulates temporal and spatial expression of genes for controlling cell fate and differentiation. Recently, DNA methylation has been demonstrated to be required for vertebrate early embryogenesis. Loss of Dnmt genes in zebrafish and mice caused defects in organogenesis and tissue terminal differentiation. This paper summarizes the dynamic expression pattern of Dnmt genes and the roles of DNA methylation from early embryogenesis to organogenesis in both mice and zebrafish, specifically, how DNA methylation and histone modifications cooperatively regulate gene transcription during these processes. Better understanding of DNA me-thylation in vertebrate embryogenesis will provide insights for new treatment of DNA methylation-related human diseases.

Key words: DNA methylation, DNA methyltransferase, hematopoiesis, embryogenesis, zebrafish, mouse

杨晓丹，韩威，刘峰. DNA甲基化与脊椎动物胚胎发育[J]. 遗传, 2012, 34(9): 1108-1113.

YANG Xiao-Dan, HAN Wei, LIU Feng. DNA methylation in vertebrate embryogenesis[J]. HEREDITAS, 2012, 34(9): 1108-1113.

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DNA甲基化与脊椎动物胚胎发育

DNA methylation in vertebrate embryogenesis

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