基础医学与临床 ›› 2008, Vol. 28 ›› Issue (9): 964-968.

• 研究论文 • 上一篇    下一篇

胰腺癌BxPC3细胞中Src激酶对Notch-1活化的调节

杨小燕 张玉祥 王泽生   

  1. 首都医科大学基础医学院 首都医科大学生物化学与分子生物学系
  • 收稿日期:2008-05-13 修回日期:1900-01-01 出版日期:2008-09-25 发布日期:2008-09-25
  • 通讯作者: 王泽生

Tyrosine kinase Src mediates Notch-1 activation in BxPC3 pancreatic cancer cells

Xiao-yan YANG, Yu-xiang ZHANG, Zhe-sheng WANG   

  1. Capital Medical University Capital Medical University
  • Received:2008-05-13 Revised:1900-01-01 Online:2008-09-25 Published:2008-09-25
  • Contact: Zhe-sheng WANG

摘要: 目的 探讨在胰腺癌细胞BxPC3中, Src激酶对Notch-1活化的影响。方法 用siRNA干扰的方法分别抑制Notch-1和c-Src的表达;加入Src激酶抑制剂PP2抑制Src激酶活性;MTT法检测细胞的生长;用Western blot检测Notch-1蛋白活性形式NICD水平的变化。 结果 抑制Notch-1表达及抑制Src激酶活性可明显抑制BxPC3细胞生长;抑制Src激酶活性及抑制c-Src蛋白表达可下调Notch-1 NICD水平。 结论 Src激酶在胰腺癌细胞BxPC3中促进Notch-1的活化,促进BxPC3细胞的生长。

关键词: 胰腺癌, BxPC3, Notch-1, Src, PP2

Abstract: Objective To observe the effect of tyrosine kinase Src on activating Notch-1 protein in pancreatic cancer cell line - BxPC3. Methods Notch-1 expression and c-Src expression were inhibited by siRNA interference, and the activation of Src was inhibited by its inhibitor PP2. The growth rate of BxPC3 cells was measured by MTT. The changes of Notch-1 NICD level and Src protein level were measured by Western blot. Results The growth of BxPC3 cells decreased after inhibiting Notch-1 expression, as well as the cells were treated with PP2. The level of Notch-1 NICD decreased both after inhibiting c-Src expression and after Src activation was inhibited by PP2. Conclusion In BxPC3 cells, tyrosine kinase Src promotes the level of Notch-1 NICD, which directly influences the cell growth.

Key words: pancreas cancer, BxPC3, Notch-1, Src, PP2