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Xue-Song Liang, Jian-Qi Lian, Chun-Qiu Hao, Yong-Xing Zhou, Qing-He Nie, The Center of Diagnosis and Treatment of Infectious Diseases of PLA, Tangdu Hospital of Fourth Military Medical University, Xi'an 710038, Shaanxi Province, China
Supported by: National Nature Science Foundation of China, No. 3000147.
Correspondence to: Dr Jian-Qi Lian, The center of diagnosis and treatment of infectious diseases of PLA, Tangdu Hospital of Fourth Military Medical University, Xi'an 710038, Shaanxi Province, China. lianjq@yahoo.com
Received: October 25, 2002 Revised: November 1, 2002 Accepted: November 20, 2002 Published online: February 15, 2003
AIM: To explore the inhibitory effect of internal ribosome entry site (IRES) specific inhibitor RNA (IRNA) on HCV IRES mediated protein translation in vivo.
METHODS: Human hepatic carcinoma cell line (HHCC) was transfected with the eukaryotic vectors of IRNA or mIRNA (pcRz-IRNA or pcRz-mIRNA), and then selected with G418 for 4 weeks. HHCC expressing IRNA or mIRNA was cotransfected with pCMVNCRluc containing HCV IRES. HHCC stably expressing pcHCVcluc was transfected with pcRz-IRNA, and pcRz-mIRNA, respectively, the luciferase activity was examined at desired time post-transfection.
RESULTS: The pCMVNCRluc was efficiently suppressed in HHCC expressing IRNA rather than the cell line expressing mIRNA. The IRES specific IRNA inhibited expression of HCV IRES mediated luc gene by 20% to 80% in pcHCVcluc expressing cell after transfection; However, no inhibitory effect of the mutant IRNA was observed.
CONCLUSION: pcHCVcluc could be expressed successfully in HHCC, and IRNA inhibited HCV IRES mediated gene expression in vivo.
Key Words: N/A
Citation: Liang XS, Lian JQ, Zhou Y-, Nie QH, Hao CQ. Inhibitory effect of IRES specific inhibitor RNA on HCV IRES mediated protein translation. Shijie Huaren Xiaohua Zazhi 2003; 11(2): 157-160
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