遗传 ›› 2007, Vol. 29 ›› Issue (5): 537-537―540.doi: 10.1360/yc-007-0537

• 研究报告 • 上一篇    下一篇

B-RAF基因特异的siRNA干扰对胃癌BGC823细胞的影响

付浩1, 2 ; 赵丹懿3; 孙秀菊1; 滑君1; 阎杨1; 邱广蓉1; 尚超1; 富伟能1; 孙开来1   

  1. 1. 沈阳中国医科大学医学遗传教研室, 沈阳110001;
    2. 沈阳医学院生物化学教研室, 沈阳110046;
    3. 中国医科大学第一附属医院肿瘤外科,沈阳110001

  • 收稿日期:2006-11-29 修回日期:2007-03-02 出版日期:2007-05-08 发布日期:2007-05-08
  • 通讯作者: 孙开来

Effect of B-RAF-specific RNA interference on gastric cancer BGC823 cell line

FU Hao1, 2; ZHAO Dan-Yi3; SUN Xiu-Ju1; HUA Jun1; YAN Yang1; QIU Guang-Rong1;
SHANG Chao1; FU Wei-Neng1; SUN   

  1. 1. Department of Medical Genetics, China Medical University, Shenyang 110001, China;
    2. Department of Biochemistry, Shenyang Medical Colleg, Shenyang 110046, China;
    3. Department of Surgical Oncology, First Affiliated Hospital, China Medical University, Shenyang 110001, China
  • Received:2006-11-29 Revised:2007-03-02 Online:2007-05-08 Published:2007-05-08
  • Contact: SUN Kai-Lai

摘要:

为探讨B-RAF基因特异的siRNA干扰对胃癌BGC823细胞的增殖和凋亡的影响, 设计并合成B-RAF小分子干扰RNA(B-RAF-siRNA)和阴性对照siRNA, 用TransMessenger介导转染胃癌BGC823细胞, RT-PCR分析检测胃癌BGC823细胞中B-RAF基因以及Bcl-2基因的表达; MTT检测胃癌BGC823细胞增殖情况; 流式细胞仪检测细胞凋亡情况, 并与对照组进行比较。TransMessenger能够有效介导B-RAF-siRNA和阴性对照siRNA转染胃癌BGC823细胞, TransMessenger介导的B-RAF-siRNA有效地抑制胃癌BGC823细胞B-RAF以及Bcl-2基因的表达, 与对照组相比, 抑制率达90.0%以上, 最高达100%; 同时明显抑制胃癌BGC823细胞增殖; 促进胃癌BGC823细胞的凋亡(P < 0.01)。B-RAF基因特异的siRNA干扰能有效地抑制胃癌BGC823细胞中B-RAF基因以及Bcl-2基因的表达, 同时促进胃癌细胞凋亡和抑制胃癌细胞增殖。

关键词: RNA干扰, B-RAF基因, 胃癌细胞, 细胞凋亡

Abstract:

To investigate the influence of B-RAF-specific RNA interference on the proliferation and apoptosis of gastric cancer BGC823 cell line. B-RAF-siRNA and scramble-siRNA were synthesized and transfected into BGC823 cells by TransMessenger. The expression of B-RAF gene and Bcl-2 gene in BGC823 cells was detected by RT-PCR and the level of apoptosis was evaluated in transfected cells by flow cytometry. Results showed that TransMessenger could effectively transfect B-RAF-siRNA and scramble-siRNA into BGC823 cells. B-RAF-siRNA significantly inhibited the expression of B-RAF gene and Bcl-2 gene in BGC823 cells by more than 90% to 100%. B-RAF-siRNA inhibited BGC823 cell prolifera-tion and induced apoptosis (P < 0.01). In conclusion, B-RAF-siRNA can effectively inhibit the expression of B-RAF gene and Bcl-2 gene, induce cell apoptosis and inhibit the proliferation of gastric cancer BGC823 cells.