遗传 ›› 2019, Vol. 41 ›› Issue (3): 185-192.doi: 10.16288/j.yczz.18-244

• 综述 •    下一篇

核糖体DNA转录的表观调控与肿瘤发生

程香荣,胡兴琳,姜琦,黄星卫,王楠,雷蕾()   

  1. 哈尔滨医科大学组织学与胚胎学教研室,哈尔滨 150081
  • 收稿日期:2018-10-15 修回日期:2019-01-15 出版日期:2019-02-25 发布日期:2019-02-18
  • 通讯作者: 雷蕾 E-mail:leiys2002@yahoo.com
  • 作者简介:程香荣,在读硕士研究生,专业方向:基础医学。E-mail: xiangrongcheng@foxmail.com
  • 基金资助:
    国家自然科学基金项目(No. 31671545)

The epigenetic regulation of ribosomal DNA and tumorigenesis

Xiangrong Cheng,Xinglin Hu,Qi Jiang,Xingwei Huang,Nan Wang,Lei Lei()   

  1. Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China
  • Received:2018-10-15 Revised:2019-01-15 Online:2019-02-25 Published:2019-02-18
  • Contact: Lei Lei E-mail:leiys2002@yahoo.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(No. 31671545)

摘要:

近年来,表观遗传机制的研究结果提示核糖体DNA (rDNA)表观调控机制的缺陷可能诱导肿瘤发生。ATRX/DAXX复合物通过介导H3.3的H3K9me3修饰,建立和维持rDNA转录沉默。ATRX/DAXX基因在部分肿瘤中经常发生突变,可能刺激rDNA转录而促进肿瘤发生发展。本文主要阐述rDNA转录表达异常对肿瘤发生的促进作用,介绍rDNA基因转录的表观遗传调控机制,以期为针对rDNA转录调控机制的药物研发提供新的理论支持。

关键词: rDNA, 表观调控, H3.3, ATRX/DAXX, 肿瘤发生

Abstract:

Recent research in epigenetics suggests that defects in epigenetic regulation of ribosomal DNA (rDNA) transcription may contribute to tumorigenesis. ATRX/DAXX complex is involved in the establishment and maintenance of the silence of the rDNA gene through H3K9me3 modification at histone variant H3.3. The ATRX/DAXX-related genes are frequently mutated in some types of tumors, which may increase rDNA transcription and promote cancer development and progression. In this review, we focus on the mechanism that abnormal transcription of rDNA potentially influences tumorigenesis. We also summarize the epigenetic regulatory mechanism of rDNA transcription, which may provide new theoretical support for drug development based on rDNA transcriptional regulation.

Key words: rDNA, epigenetic regulation, H3.3, ATRX/DAXX, tumorigenesis