中国实用口腔科杂志 ›› 2010, Vol. 3 ›› Issue (09): 550-552.

• 论著 • 上一篇    下一篇

姜黄素对口腔鳞癌细胞的增殖抑制作用及机制研究

  

  1. 青岛大学医学院附属医院,山东  青岛  266003
  • 收稿日期:2010-07-21 修回日期:2010-08-26 出版日期:2010-09-15 发布日期:2010-10-14

  • Received:2010-07-21 Revised:2010-08-26 Online:2010-09-15 Published:2010-10-14

摘要:

目的    探讨姜黄素对人口腔鳞癌细胞的增殖抑制作用及作用机制。方法    2009年3—12月于青岛大学医学院选用人舌鳞癌细胞系Tca8113及其脑转移亚系Tb为研究对象,分别用6.25、12.5、25、50 μmol/L姜黄素处理,阴性对照仅加入RPMI1640培养液,用MTT法测定细胞增殖抑制率;以免疫细胞化学方法检测25 μmol/L姜黄素处理后细胞内β-连环蛋白和Notch1的表达。结果    姜黄素对口腔鳞癌细胞Tca8113及Tb增殖有明显抑制作用,并呈剂量依赖性。免疫细胞化学检测结果表明,25 μmol/L姜黄素作用口腔鳞癌细胞系Tca8113及Tb 24 h后即可明显下调β-连环蛋白的表达水平(P < 0.05),上调Notch1表达水平(P < 0.05)。结论    姜黄素对人口腔鳞癌细胞系Tca8113及Tb的增殖具有抑制作用,其作用机制可能与细胞内β-连环蛋白表达水平下调和Notch1表达水平上调有关。

关键词: 姜黄素, 鳞状细胞癌, &beta, -catenin, Notch1

Abstract:

Objective    To investigate the effects of curcumin in inhibiting proliferation in oral squamous cell carcinoma in vitro and study its possible molecular mechanism. Methods    MTT was used to evaluate the growth inhibition rate of Tca8113 and Tb. The expression of β-catenin and Notch1 was analyzed by immunocytochemistry. Results    The proliferation of Tca8113 and Tb was inhibited significantly by curcumin in a dose- dependent manner. The expression ofβ-catenin was significantly down- regulated after being treated with curcumin for 24 hours,while the level of Notch1 was up-regulated significantly. Conclusion    Curcumin can inhibit proliferation of oral squamous cell carcinoma Tca8113 and Tb cells,and its possible molecular mechanism might be related to the modulation of β-catenin and Notch1 levels.

Key words: curcumin;squamous cell carcinoma;β-catenin;Notch1