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中国临床药理学与治疗学 ›› 2014, Vol. 19 ›› Issue (9): 961-966.

• 基础研究 •    下一篇

siRNA沉默胃癌SGC-7901细胞COX-2基因对VEGF-C表达与细胞迁移的影响

罗慧英1, 3, 杨林1, 3, 王晓鹏2, 苏河2, 刘英2, 马云涛2, 吴自燕2   

  1. 1 甘肃中医学院药理教研室,
    2 甘肃省人民医院干四普外科, 3 甘肃省中药药理与毒理学省级重点实验室, 兰州 730000,甘肃
  • 收稿日期:2013-10-30 修回日期:2014-05-04 出版日期:2014-09-26 发布日期:2014-09-26
  • 通讯作者: 苏河,男,主任医师,主要从事消化道肿瘤的基础与临床研究。E-mail: wxpjm78@163.com
  • 作者简介:罗慧英,女,博士,副教授,硕士研究生导师,主要从事中药药理学与毒理学研究。 Tel: 0931-8765395 E-mail: louria@vip.sina.com
  • 基金资助:
    甘肃省自然科学基金项目 (1107RJZA121)

Effects of siRNA silencing COX-2 gene on VEGF-C expression and cell migration in SGC-7901 cells

LUO Hui-ying1, 3, YANG Lin1, 3, WANG Xiao-peng2, SU He2, LIU Ying2, MA Yun-tao2, WU Zi-yan2   

  1. 1 Department of Pharmacology,Gansu College of Traditional Chinese Medicine,
    2 Department of General Surgery,Gansu Provincial People's Hospital;
    3 Provincial Key Laboratory, Gansu Province Chinese Medicine Pharmacology and Toxicology,Lanzhou 730000,Gansu,China
  • Received:2013-10-30 Revised:2014-05-04 Online:2014-09-26 Published:2014-09-26

摘要: 目的 探讨RNA干扰技术(RNAi)沉默环氧化酶-2(COX-2)基因对血管内皮生长因子-C(VEGF-C)的表达及细胞迁移能力的影响。方法 利用siRNA干扰胃癌SGC-7901细胞COX-2基因,RT-PCR和免疫荧光检测干扰前后COX-2基因和VEGF-C基因在mRNA和蛋白水平表达差异;细胞划痕实验比较COX-2基因对细胞迁移能力变化的影响。结果 COX-2基因干扰后,胃癌SGC-7901细胞中COX-2基因和VEGF-C基因的mRNA和蛋白水平明显下调,组间差异具有统计学意义(P<0.05),且COX-2与VEGF-C的表达呈显著正相关性(P<0.05);同时胃癌细胞的迁移能力也明显降低。结论 siRNA能特异性地抑制胃癌SGC-7901细胞COX-2基因的表达,进而抑制VEGF-C的表达,降低胃癌细胞的迁移能力,减少胃癌细胞转移。

关键词: 胃癌, RNA干扰, 环氧化酶-2, 血管内皮生长因子-C, 细胞迁移

Abstract: AIM: To investigate the effects of using RNA interference to silence the expression of COX-2 gene on the expression of VEGF-C and cell migration. METHODS: Using siRNA interference the COX-2 gene in gastric carcinoma cell line SGC-7901, and RT-PCR and immunofluorescence detect the expression of COX-2 and VEGF-C gene,comparison the effect COX-2 gene on cell migration by cell scratch test.RESULTS: COX-2 gene and VEGF-C gene were significantly reduced in mRNA and protein levels after the silence of COX-2 gene in gastric cancer cell line SGC-7901,with statistically significant difference between groups (P<0.05). The expression of COX-2 was closely correlated with the expression of VEGF-C(P<0.05); the migration ability of gastric cancer cells also decreased. CONCLUSION: In gastric carcinoma cell SGC-7901, siRNA can inhibit the COX-2 expression,and COX-2 gene could enhance the migration ability of gastric cancer cells.The silence of COX-2 gene could download the expression of VEGF-C,reduce the migration ability of gastric cancer cells, therefore reducing the metastasis of gastric cancer cell.

Key words: gastric carcinoma, RNA interference, COX-2, VEGF-C, cell migration

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