解剖学报 ›› 2021, Vol. 52 ›› Issue (2): 244-250.doi: 10.16098/j.issn.0529-1356.2021.02.013

• 肿瘤生物学 • 上一篇    下一篇

乳腺癌中蛋白高乙酰化/琥珀酰化水平及其同组蛋白2AX高表达的相关性

高秀丽1 岳丽玲1* 赵月生2 刘立琨1 刘得水1 朱文斌1 周丽1   

  1. 1.齐齐哈尔医学院医药科学研究院,肿瘤分子生物学研究室,黑龙江 齐齐哈尔 161006; 2.齐齐哈尔医学院附属第三医院乳腺外科,黑龙江 齐齐哈尔 161006
  • 收稿日期:2020-03-03 修回日期:2020-06-19 出版日期:2021-04-06 发布日期:2021-04-06
  • 通讯作者: 岳丽玲 E-mail:yuell1025@126.com
  • 基金资助:
    黑龙江省教育厅科学技术研究项目

High protein acetylation/succinylation levels and their correlation with high histone 2AX expression level in breast cancer

GAO Xiu-li1 YUE Li-ling1* ZHAO Yue-sheng2  LIU Li-kun1 LIU De-shui1 ZHU Wen-bin1 ZHOU Li1#br#   

  1. 1.Laboratory of Oncomolecularbiology, Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Heilongjiang Qiqihar 161006, China;   2.Department of Breast Surgery, the Third Affiliated Hospital, Qiqihar Medical University, Heilongjiang Qiqihar 161006, China
  • Received:2020-03-03 Revised:2020-06-19 Online:2021-04-06 Published:2021-04-06
  • Contact: YUE Li-ling E-mail:yuell1025@126.com

摘要:

目的  明确乳腺癌中蛋白乙酰化/琥珀酰化修饰和组蛋白2AX(H2AX)表达水平,并确认两者之间是否具有相关性。   方法  Western blotting及RT-PCR方法检测11例乳腺癌组织和细胞中蛋白修饰和H2AX表达水平,并利用组蛋白去乙酰化酶抑制剂初步明确乙酰化和琥珀酰化可能存在的共同调控方式;载体构建及过表达方法明确H2AX表达同蛋白修饰之间的相关性。   结果  同正常乳腺组织相比,乳腺癌组织中蛋白乙酰化/琥珀酰化水平增加,且两者可能受组蛋白去乙酰化酶(HDAC)家族成员的共同调控。乳腺癌组织及细胞中H2AX mRNA及蛋白表达水平增加,且其表达水平同代表核仁磷蛋白1(NPM1)的表达及修饰水平成正相关。   结论  乳腺癌具有蛋白高乙酰化/琥珀酰化修饰及H2AX高表达的特点,且H2AX表达水平同部分蛋白修饰水平成正相关。

关键词: 乳腺癌, 乙酰化, 琥珀酰化, 组蛋白2AX, 核仁磷蛋白1, 免疫印迹法, 反转录聚合酶链反应,

Abstract:

Objective  To explore the protein acetylation/succinylation and histone 2AX(H2AX) expression levels in breast cancer, as well as their correlation.    Methods  By Western blotting and RT-PCR methods to detect the protein modification and H2AX expression levels in 11 breast cancer tissues and cells, as well as to explore the common regulation way of protein acetylation and succinylation by treatment of histone deacetylase inhibitors; To study the relationship between H2AX expression level and protein modification level through the construction and over-expression of indicated plasmids.   Results  Compared  with the adjacent normal tissues, there existed an increase protein acetylation/succinylation levels in breast cancer tissues, and the protein acetylation and succinylation were both regulated by histone deacetylase(HDAC) members. The H2AX mRNA and protein expression levels were increased both in breast cancer cell and tissues, its expression level and the expression and modification level of represented protein nucleophosmin 1(NPM1) showed a positive correlation.   Conclusion  The breast cancer possesses a characteristic of high protein acetylation/succinylation levels and high H2AX expression level, the H2AX expression level and the modification level of partial proteins in breast cancer have a positive correlation.

Key words: Breast cancer, Acetylation, Succinylation, Histone 2AX, Nucleophosmin 1, Western blotting, RT-PCR,  , Human

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