Apoptosis in Raji cell line induced by influenza A virus  

作　　者：李虹 肖丽英 李华林 李婉宜 蒋中华 张林 李明远 

机构地区：[1]Department of Microbiology, West China Medical Center, Sichuan University, Chengdu 610041,China [2]Department of Forensic Medicine, West China Medical Center,Sichuan University, Chengdu 610041,China

出　　处：《Chinese Medical Journal》2003年第9期1321-1324,共4页中华医学杂志（英文版）

基　　金：This work was supported by a grant from the Natural Science Foundation of China (No.39970830).

摘　　要：OBJECTIVE: To study the apoptotic effects of influenza A virus on the Raji cell line. METHODS: Cultured Raji cells were infected with influenza A virus at a multiplicity of infection (m.o.i) of 20 and the effects of apoptosis were detected at different time points post infection using the following methods: electron microscope, DNA agarose gel electrophoresis, PI stained flow cytometry (FCM) and Annexin-V FITC/PI stained FCM. RESULTS: Raji cells infected with influenza A virus showed changes of morphology apoptosis, DNA agarose electrophoresis also demonstrated a ladder-like pattern of DNA fragments in a time-dependent manner. PI stained FCM showed 'apoptosis peak' and FITC/PI stained FCM showed apoptotic cells. Quantitative analysis indicated that the percentage of apoptotic Raji cells increased after infection, and cycloheximide (CHX), an eukaryotic transcription inhibitor, could effectively inhibit the apoptotic effects of influenza A virus in vitro. CONCLUSIONS: Influenza A virus can induce apoptosis in Raji cell line suggesting that it may lead to a potential method for tumor therapy.OBJECTIVE: To study the apoptotic effects of influenza A virus on the Raji cell line. METHODS: Cultured Raji cells were infected with influenza A virus at a multiplicity of infection (m.o.i) of 20 and the effects of apoptosis were detected at different time points post infection using the following methods: electron microscope, DNA agarose gel electrophoresis, PI stained flow cytometry (FCM) and Annexin-V FITC/PI stained FCM. RESULTS: Raji cells infected with influenza A virus showed changes of morphology apoptosis, DNA agarose electrophoresis also demonstrated a ladder-like pattern of DNA fragments in a time-dependent manner. PI stained FCM showed 'apoptosis peak' and FITC/PI stained FCM showed apoptotic cells. Quantitative analysis indicated that the percentage of apoptotic Raji cells increased after infection, and cycloheximide (CHX), an eukaryotic transcription inhibitor, could effectively inhibit the apoptotic effects of influenza A virus in vitro. CONCLUSIONS: Influenza A virus can induce apoptosis in Raji cell line suggesting that it may lead to a potential method for tumor therapy.

关 键 词：APOPTOSIS Humans Influenza A virus Research Support  Non-U.S. Gov't Tumor Cells  Cultured 

分 类 号：R511.7[医药卫生—内科学] R373.13[医药卫生—临床医学]