›› 2012, Vol. 39 ›› Issue (6): 83-86.

• 生物技术 • 上一篇    下一篇

DNA甲基化及其生物学功能

沈秀平1,2, 林月霞3, 徐琪4   

  1. 1. 上海交通大学农业与生物学院,上海 200240;
    2. 上海市农业科技服务中心,上海 200335;
    3. 上海市农业科学院,上海 201106;
    4. 江苏省动物遗传繁育与分子设计重点实验室,江苏扬州 225009
  • 收稿日期:2011-07-13 出版日期:2012-06-20 发布日期:2012-07-02
  • 通讯作者: 林月霞(1978-),女,江苏人,助理研究员,研究方向:畜牧与动物营养。
  • 作者简介:沈秀平(1980-),女,江苏人,畜牧师,研究方向:畜牧兽医。

DNA Methylation and its Biological Functions

SHEN Xiu-ping1,2, LIN Yue-xia3, XU Qi4   

  1. 1. Shanghai Jiao Tong University School of Agriculture Biology, Shanghai 200240,China;
    2. Shanghai Agricultural Science and Technology Service Center,Shanghai 200335,China;
    3. Shanghai Academy of Agricultural Sciences,Shanghai 201106,China;
    4. Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province,Yangzhou 225009,China
  • Received:2011-07-13 Online:2012-06-20 Published:2012-07-02

摘要: DNA甲基化是一种主要的表观遗传修饰,是调节基因表达的重要手段。作者在介绍了DNA甲基化机制、DNA甲基化的模式、DNA甲基化特点的基础上,重点论述了DNA甲基化发育分化、X染色体失活、基因组印记和杂种优势等方面的作用。

关键词: DNA甲基化; 甲基转移酶; 基因组印记; 杂种优势

Abstract: DNA methylation is a major epigenetic modification of genome and plays crucial role in regulation of gene expression. The mechanism, mode and characteristic of DNA methylation were introduced. And the role of DNA methylation in development and differentiation, X chromosome inactivation, gemomic imprinting and heterosis were discussed.

Key words: DNA methylation; methyltransferase; genomic imprinting; heterosis

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