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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (7): 755-759.

• 研究原著 • 上一篇    下一篇

Bay117802 抑制羟基喜树碱诱导的人乳腺癌Bcap37 细胞凋亡

叶孟, 林蕾, 方勇1, 潘宏铭1, 吴金民1   

  1. 宁波大学附属医院肿瘤科, 宁波315020, 浙江; 1浙江大学附属邵逸夫医院肿瘤中心, 杭州310016, 浙江
  • 收稿日期:2005-01-05 修回日期:2005-03-30 出版日期:2005-07-26 发布日期:2020-11-10
  • 通讯作者: 潘宏铭,男, 博士, 主任医师, 主要从事肿瘤化疗研究和肿瘤信号转导途径研究。Tel:0571-86090073-3121 E-mail: drll606@hotmail.com
  • 作者简介:叶孟, 男, 博士, 主治医师, 研究方向:肿瘤化疗和肿瘤信号转导途径。Tel:0574-66892008 E-mail: dryemeng@yahoo.com.cn

Inhibition of NF-kappa B activation by Bay117082 attenuate apoptosis induced by HCPT in Breast cancer Bcap 37 cells

YE Meng, LIN Lei, FANG Yong1, PAN Hong-ming1, WU Jin-min1   

  1. Department of Oncology, the Affiliated Hospital, Ningbo University, Ningbo 315020, Zhejiang, China; 1Department of Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, Zhejiang, China
  • Received:2005-01-05 Revised:2005-03-30 Online:2005-07-26 Published:2020-11-10

摘要: 目的: 探讨IκB-α磷酸化抑制剂Bay117082 特异性阻断NFκB 信号转导途径对羟基喜树碱(HCPT)诱导Bcap37 细胞凋亡的影响。方法: 采用MTT 法测定细胞的增殖活力;琼脂糖凝胶电泳观察细胞调亡;Western blot 研究细胞调亡所涉及的蛋白表达;DIGEMSA研究NFκB /DNA 结合状况。结果: 5 μmol·L-1 Bay117082 可以抑制HCPT 对IκB-α的磷酸化, 阻断NFκB 信号转导途径, 阻滞HCPT 诱导的细胞凋亡,同时也抑制HCPT 诱导pro-Caspase3 和Bcl-2 的降解。结论: Bay117082 对HCPT 诱导的乳腺癌细胞凋亡有明显的抑制作用, 其作用机制与NFκB 信号转导途径有关, NFκB 起促进凋亡的作用。

关键词: 羟基喜树碱, 乳腺癌, 凋亡, Bay117802, 核转录因子κB

Abstract: AIM: To investigate the role of Bay117082 in apoptosis induced by 10-Hydroxycamptothecin (HCPT) in human breast carcinoma cells. METHODS: The cell growth inhibiting was measured by MTT assay, agarose gel eletrophoresis were performed for cell apoptosis, Western Blotting were performed for protein expression. DIG-EMSA was conducted to determine the DNA-binding activation of NF κB. RESULTS: 5 mmol·L-1 Bay117082 had a remarkable inhibition on apoptosis induced by HCPT in breast cancer cells. NF κB was not activated after exposing to HCPT plus Bay117082.Pro-Caspase3 and Bcl-2 were not degraded either. CONCLUSION: Bay117082 may attenuate apoptosis induced by HCPT through inhibiting activation of NF κB in Bcap37 cell line.

Key words: HCPT, breast carcinoma cell, apoptosis, Bay117082, NFκB

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