【摘 要】
：
目的 探讨RNA干扰技术沉默Cathepsin L基因对肝癌细胞生物学特性的影响.方法 实验组为肝癌细胞CathepsinL siRNA转染基因沉默组(沉默组),实验对照为肝癌细胞空白对照组(空白
【机 构】
：
成都军区昆明总医院肝胆外科,第三军医大学西南医院全军肝胆外科研究所西南肝胆外科医院
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目的 探讨RNA干扰技术沉默Cathepsin L基因对肝癌细胞生物学特性的影响.方法 实验组为肝癌细胞CathepsinL siRNA转染基因沉默组(沉默组),实验对照为肝癌细胞空白对照组(空白组)和siRNA转染荧光蛋白对照组(荧光对照组).观察时间为Cathepsin L siRNA转染后1、3和6 d.观察各组肝癌细胞Cathepsin L siRNA转染效率.用免疫荧光、RT-PCR法及WB法检测肝癌细胞Cathepsin L表达,MTT法检测细胞活力,流式细胞仪检测细胞周期和凋亡变化,侵袭小室法测定肝癌细胞侵袭力变化.结果 沉默组与空白组、荧光对照组比较,Cathepsin L mRNA水平和蛋白水平显著下降,细胞生长受抑制,增殖指数显著下降,细胞凋亡率显著增加,肝癌细胞侵袭力显著下降.结论 RNAi可有效沉默肝癌细胞Cathepsin L表达,降低肝癌细胞增殖活力及细胞侵袭力.
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