Enhanced Chemotherapy Sensitivity of Human Colon Cancer Cells to 5-Fluorouracil by siRNA Recombinant Expression Vector Targeting Survivin Gene  

作　　者：Ming Cai Guo-bin wang Kai-xiong Tao Chang-xue Cai 

机构地区：[1]Department of General Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China [2]Department of Pathogenic Biology, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China

出　　处：《Chinese Medical Sciences Journal》2009年第2期97-101,共5页中国医学科学杂志（英文版）

基　　金：Supported by National High Technology Research and Development Program of China (2001AA218051);Educational Commission of Hubei Province of China (2005A304B09)

摘　　要：Objective To investigate the effects of small interfering RNA （siRNA） recombinant expression vector targeting survivin gene on chemotherapy sensitivity of human colon cancer cells to 5-fluorouracil. Methods siRNA recombinant expression vector targeting survivin gene was constructed and transfected into human colon cancer cell lines LOVO. After 48 hours of transfection, cells were harvested for analysis of survivin mRNA and protein expressions using RT-PCR and Western blot. In addition, after human colon cancer cell lines were treated with Survivin siRNA and/or 5-fluorouracil, MTT assay and flow cytometry were used to analyze cell proliferation and apoptosis. Results Restriction endonuclease analysis confirmed that siRNA recombinant expression vector targeting survivin gene was successfully constructed. Inhibitory ratios of survivin mRNA and protein expressions by Survivin siRNA were 36.33% and 44.65%, respectively. Survivin siRNA combined with 5-fluorouracil significantly increased the cell proliferation inhibitory ratio and apoptosis ratio compared with 5-fluorouracil treatin~ alone （P〈0.05）. Conclusion The siRNA recombinant expression vector targeting survivin gene can inhibit the expression of survivin gene, and enhance chemotherapy sensitivity of human colon cancer cells to 5- fluorouracil.

关 键 词：survivin RNA interference gene therapy CHEMOTHERAPY 

分 类 号：Q524[生物学—生物化学] S852.659.6[农业科学—基础兽医学]