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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (9): 1009-1012.

• 基础研究 • 上一篇    下一篇

组蛋白去乙酰化酶抑制剂FK228对前列腺癌LNCaP 细胞的抑制作用

孙圣坤1, 洪宝发1, 李秀森2, 侯春梅2, 肖序仁1, 于晓妉2   

  1. 1解放军总医院泌尿外科, 北京100853;
    2军事医学科学院基础医学研究所, 北京100850
  • 收稿日期:2007-05-17 修回日期:2007-06-27 出版日期:2007-09-26 发布日期:2020-10-30
  • 通讯作者: 于晓妉, 女, 博士, 研究员, 博士研究生导师, 主要从事肿瘤细胞信号转导研究。Tel:010-66932372 E-mail:yuxd@nic.bmi.ac.cn
  • 作者简介:孙圣坤, 男, 医学博士, 主治医师, 主要从事前列腺肿瘤研究。Tel:010-66937107 E-mail:shengkunsun@301hospital.com.cn
  • 基金资助:
    国家自然科学基金重点项目(30330620);国家自然科学基金面上项目(30600613)

Inhibitory effect of histone deacetylase inhibitor FK228 on LNCaP prostate cancer cells

SUN Sheng-kun1, HONG Bao-fa1, LI Xiu-shen2, HOU Chun-mei2, XIAO Xu-ren1, YU Xiao-dan2   

  1. 1Department of Urology, PLAGeneral Hospital, Beijing 100853, China;
    2Institute of Basic Medical Sciences, Academy of Military Medical Sciences, Beijing 100850, China
  • Received:2007-05-17 Revised:2007-06-27 Online:2007-09-26 Published:2020-10-30

摘要: 目的:研究组蛋白去乙酰化酶抑制剂FK228对前列腺癌LNCaP 细胞的抑制作用机理。方法:四甲基偶氮唑蓝(MTT) 检测药物对肿瘤细胞增殖的影响, hoechst 33342 染色观察细胞凋亡的形态学变化,Western blotting 检测凋亡标志蛋白的表达, 激光共聚焦分析雄激素受体(AR) 蛋白的表达。结果:FK228在较低浓度即能有效抑制LNCaP 细胞的增殖并诱导细胞凋亡, 半效杀伤剂量(EC50) 为7.4 ng/mL;FK228 作用24 h 后, 细胞核内的AR 基本被清除。结论:FK228 能够阻断对前列腺癌细胞生长具有重要作用的AR 信号通路, 从而对肿瘤细胞发挥抑制作用。

关键词: 组蛋白去乙酰化酶抑制剂, 前列腺癌, 雄激素受体, FK228, 细胞信号通路, 凋亡

Abstract: AIM: To investigate the mechanisms underlying the antitumor effect of histone deacetylase inhibitor FK228 on LNCaP prostate cancer cell line.METHODS: Proliferation of LNCaP cells exposed to FK228 was detected by MTT assay.Cell apoptosis was assayed by hoechst 33342 nuclei staining.Cleaved PARP, an apoptosis marker protein, was assayed by western blotting after FK228 exposure.The expression of the androgen receptor (AR) was performed by confocal laser scanning microscope.RESULTS: FK228 killed LNCaP cells with an EC50 value of 7.4 ng/mL within 48 hours exposure as well as inducing cell apoptosis.FK228 could deplete AR in the nucleus.CONCLUSION: FK228 exhibits significant antitumor effect against LNCaP cells through depletion of AR.

Key words: histone deacetylase inhibitor, prostate cancer, androgen receptor, FK228, cell signaling pathway, apoptosis

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