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Inhibitory effects of siRNA on expression of epidermal growth factor receptor in squamous cell carcinoma cell line A431
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 12
- DOI:
- 10.3321/j.issn:1000-2790.2009.12.003
- Key Word:
- RNA干扰;表皮生长因子受体;鳞状细胞癌;细胞凋亡
Abstract： 目的:研究RNA干扰(RNA interference,RNAi)对皮肤鳞癌A431细胞表皮生长因子受体(EGFR)基因表达的抑制作用及其对A431细胞增殖、凋亡的影响.方法:设计制备两对针对EGFR基因的小干扰RNA(small interfering RNA,siRNA),转染A431人皮肤鳞癌细胞株,采用RT-PCR法检测EGFR mRNA的表达;Western Blot测定EGFR蛋白的表达;MTT法检测细胞生长的影响;流式细胞仪检测细胞凋亡率.结果:siRNA2干扰后EGFR mRNA与蛋白的表达强度分别为(16.5±1.6)%和(11.1±1.6)%,与对照组比较有统计学差异(P<0.05);在EGFR表达受到抑制的同时,转染后的A431胞生长速度明显变慢;A431细胞的凋亡率为(12.6±1.4)%,与对照组比较有统计学差异(P<0.05).结论:siRNA2能有效抑制皮肤鳞癌细胞EGFR基因的表达,抑制细胞的增殖,并促进细胞凋亡.
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