基础医学与临床 ›› 2012, Vol. 32 ›› Issue (3): 300-304.

• 研究论文 • 上一篇    下一篇

BHLHB2 在人胰腺癌细胞株SU86.86的生物学功能研究

王维斌1,赵玉沛2,廖泉3,张太平4,徐徕1   

  1. 1. 北京协和医院基本外科
    2. 北京协和医院外科
    3. 中国医学科学院 北京协和医学院 北京协和医院 基本外科
    4. PUMCH
  • 收稿日期:2011-07-17 修回日期:2011-10-08 出版日期:2012-03-05 发布日期:2012-02-27
  • 通讯作者: 赵玉沛 E-mail:zhao8028@263.net

BHLHB2 Molecular Biology functions in Human Pancreatic cancer cell line SU86.86

  • Received:2011-07-17 Revised:2011-10-08 Online:2012-03-05 Published:2012-02-27

摘要: 【摘要】目的:进一步研究前期实验结果证明的人胰腺癌新颖的独立预后因子BHLHB2(cAMP -inducible basic helix-loop-helix domain containing, class B, 2) 在人胰腺癌细胞中的相关分子生物学功能。方法:应用siRNA干扰技术,在人胰腺癌细胞株SU86.86中使BHLHB2表达沉寂,然后进行迁徙实验,研究BHLHB2与细胞迁徙的关系;应用更生霉素(Actinomycin D,ACT-D)诱导细胞凋亡,研究BHLHB2与细胞凋亡的关系;应用Western Blot方法研究BHLHB2与EMT的相关性。结果: 人胰腺癌细胞BHLHB2 表达沉寂后,细胞的迁徙明显增快。应用ACT-D进行凋亡诱导,BHLHB2表达沉寂后、发生凋亡的细胞数目明显增加(10ng/ml, 增加 1.32倍, p<0.05; 100ng/ml, 增加 1.41倍, p<0.05)。Western Blot结果表明, BHLHB2表达沉寂后可显著降低E-cadherin的表达(降低 11.35 倍, p<0.01)。结论: BHLHB2 具有多种生物学功能,与人胰腺癌细胞的迁徙、细胞凋亡及EMT密切相关。

关键词: 胰腺癌, 生物功能, 细胞凋亡

Abstract: 【Abstract】 Aims: Continually to deeply explore BHLHB2 related molecular biology functions, which was proved a novel and independent prognostic marker in pancreatic ductal adenocarcinoma by our protophase experimental results. Methods: Knock-down of BHLHB2 in pancreatic cancer cell line-SU86.86 was achieved by siRNA treatment. Migration essay was performed to research the relationship between BHLHB2 and cell migration. The proliferation assay induced by ACT-D to explore BHLHB2 roles in cell apoptosis. Associativity between BHLHB2 and EMT was analyzed using immunoblot analysis. Results: BHLHB2 silencing with RNAi significantly promote cell migrate, and induced cell apoptosis by Actinomycin D (ACT-D) (10ng/ml, increased 1.32 fold, p<0.05; 100ng/ml, increased 1.41 fold, p<0.05). By Western Blot, BHLHB2 silencing significantly deduced E-cadherin expression (decreased 11.35 fold, p<0.01), which implicated BHLHB2 was correlated with epithelial mesenchymal transform (EMT). Conclusions: BHLHB2 has multiple biological functions, closely associated with cell migration, cell apoptosis and EMT in human pancreatic cancer.

Key words: Pancreatic cancer, Biological function, Apoptosis