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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (9): 1013-1016.

• 研究原著 • 上一篇    下一篇

曲古抑菌素A 对前列腺癌LNCaP 细胞抑制效应的细胞信号通路研究

孙圣坤1,2, 刘兵1, 李秀森1, 侯春梅1, 洪宝发2, 于晓妉1   

  1. 1军事医学科学院基础医学研究所, 北京 100850;
    2解放军总医院泌尿外科, 北京 100853
  • 收稿日期:2006-04-03 修回日期:2006-06-15 出版日期:2006-09-26 发布日期:2020-11-05
  • 通讯作者: 于晓,女, 研究员, 博士, 博士生导师, 主要从事肿瘤细胞信号转导研究。Tel:010-6693 2372  E-mail:yuxd@nic.bmi.ac.cn
  • 作者简介:孙圣坤, 男, 硕士, 主治医师, 在读博士研究生, 主要从事前列腺肿瘤研究。Tel:13611196966 E-mail:sunshengkun@hotmail.com
  • 基金资助:
    国家自然科学基金重点项目( No30330620)

Targeting multiple signaling pathways in LNCaP prostate cancer cell line by trichostatin A

SUN Sheng-kun1,2, LIU Bing1, LI Xiu-shen1, HOU Chun-mei1, HONG Bao-fa2, YU Xiao-dan1   

  1. 1Institute of Basic Medical Sciences, Academy ofMilitary Medical Sciences, Beijing 100850 , China;
    2Department of Urology , PLA General Hospital, Beijing 100853, China
  • Received:2006-04-03 Revised:2006-06-15 Online:2006-09-26 Published:2020-11-05

摘要: 目的 研究组蛋白去乙酰化酶抑制剂曲古抑菌素A( TSA) 对前列腺癌LNCaP 细胞抑制作用的细胞信号机制。方法 半固体培养检测TSA 对前列腺癌细胞集落形成能力的影响;Western Blot 分析细胞蛋白乙酰化水平、细胞信号通路蛋白及细胞周期相关蛋白的表达。结果 TSA 能够有效杀伤前列腺癌LNCaP 细胞, 在较低浓度即能抑制具有集落形成能力的细胞;药物处理使细胞内蛋白乙酰化水平增高,乙酰化组蛋白H3 积累, 多种细胞信号通路的相关蛋白如雄激素受体、HER2 、Raf-1 、Akt 、CDK4 等呈时间依赖性和剂量依赖性被清除。结论 TSA 能够同时阻断对细胞生长具有重要作用的多条细胞信号通路, 从而对前列腺癌LNCaP 细胞发挥抑制作用。

关键词: 组蛋白脱乙酰基酶, 前列腺癌, 细胞信号通路, 细胞凋亡, 组蛋白去乙酰化酶抑制剂, 曲古抑菌素A

Abstract: AIM: To investigate the molecular mechanisms underlying the antitumor effect of trichostatin A (TSA) on LNCaP prostate cancer cells.METHODS: Colony formation analysis was performed to assay the effect of TSA on LNCaP colony forming ability.Western blotting was used to analyze protein acetylation standard as well as the expression of a panel of signaling molecules after TSA exposure.RESULTS: TSA inhibited the colony forming ability of LNCaP cells at a very low concentration.TSA exposure caused elevated acetylation of total cellular proteins as well as accumulation of acetylated-H3.In addition, signaling molecules which play key roles in prostate cancer such as AR, ErbB2, Raf-1,CDK4, and Akt were depleted by TSA in a dose and time-dependent manner.CONCLUSION: TSA exhibits significant antitumor activity against LNCaP cells by simultaneously interfering with multiple signaling pathways such as HER2/MAPK, AR, and PI-3K-AKT pathways.

Key words: histone deacetylase, prostate cancer, signal transduction pathway, cell apoptosis, histone deacetylase inhibitors, trichostatin A

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