生物技术通报 ›› 2022, Vol. 38 ›› Issue (7): 40-50.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0807

• 表观遗传学专题 • 上一篇    下一篇

染色质免疫共沉淀测序技术研究进展

陈桂芳1,2(), 杨佳怡1(), 高运华1, 任歌1   

  1. 1.中国计量科学研究院,北京 100029
    2.沈阳化工大学,沈阳 110142
  • 收稿日期:2021-06-25 出版日期:2022-07-26 发布日期:2022-08-09
  • 作者简介:陈桂芳,女,硕士研究生,研究方向:生物化学与分子生物学;E-mail: osechenguifang@qq.com
  • 基金资助:
    国家自然科学基金项目(31900433);国家自然科学基金项目(41907272)

Research Progress in Chromatin Immunoprecipitation Followed by Sequencing

CHEN Gui-fang1,2(), YANG Jia-yi1(), GAO Yun-hua1, REN Ge1   

  1. 2. National Institute of Metrology,Beijing 100029
    2. Shenyang University of Chemical Technology,Shenyang 110142
  • Received:2021-06-25 Published:2022-07-26 Online:2022-08-09

摘要:

染色质免疫共沉淀测序(chromatin immunoprecipitation followed by sequencing,ChIP-seq)是研究目的蛋白与DNA相互作用的重要方法,被广泛应用于转录因子、组蛋白修饰等分布与功能的研究。研究人员通过对细胞分离、染色质片段化以及测序文库构建等关键步骤不断优化,使ChIP-seq适合少量细胞的分析。近年来发展迅速的CUT&RUN(cleavage under targets and release using nuclease)、CUT&Tag(cleavage under targets and tagmentation)技术,利用特异性抗体使酶“靶向”结合目标蛋白,通过MNase酶切或Tn5转座酶切割染色质,简化了实验操作流程。本文介绍了ChIP-seq的原理及其数据分析方法,比较ChIP-seq优化方法和衍生技术。总结了在植物生长发育过程中,转录因子和组蛋白修饰在生物钟调控、激素信号转导、光信号途径、胁迫响应等方面研究与染色质免疫共沉淀测序技术的应用。

关键词: 染色质免疫共沉淀, 转录因子, 组蛋白修饰, 数据分析

Abstract:

Chromatin immunoprecipitation followed by sequencing(ChIP-seq)is an important method to study the interaction between DNA and target proteins,it has been widely used to study transcription factor and the functions and distributions of post-translation histone modification. In recent years,researchers have been optimizing the key steps of this method,including cell separation,chromatin fragmentation,immunoprecipitation and sequencing library construction,allowing the ChIP-seq suitable for the analysis of small amount of cells. In cleavage under targets and release using nucleus(CUT&RUN)and cleavage under targets and tagmentation(CUT&Tag),the enzyme is “targeted” to the target protein through specific antibodies,and the chromatin near the target protein is digested by MNase or Tn5 transposase,which simplifies the operation process. The paper provided an overview of the principle behind ChIP-seq and its data analysis methods,compared the ChIP-based optimization methods and derived methods,and summarized the studies of transcription factors and histone modification in the regulation of biological clock,hormone signal transduction,signal transduction pathway and stress response in the process of plant growth and development,as well as the application of ChIP-seq technique.

Key words: chromatin immunoprecipitation, transcription factors, histone modification, data analysis