摘要
目的观察并比较不同流感病毒诱导肿瘤细胞凋亡能力的差异。方法A1、B型流感病毒及经紫外线照射后的病毒分别感染HeLa细胞,于不同时间取HeLa细胞分别在电镜下观察细胞的形态,AnnexinV-FITC染色流式细胞仪检测凋亡百分率。结果A1亚型及B型流感病毒作用于HeLa细胞后24h,电镜下可见细胞凋亡的特征性改变,且凋亡百分率随时间延长而增高,于12～24h达高峰,其中B型流感病毒的凋亡诱导率最高达38.65%,A1亚型最高为23.94%。紫外线照射后的B型流感病毒(UV-B)最高达到18.20%,UV-A1最高达到10.05%,A1亚型与B型相比差异有统计学意义(P<0.01)。结论B型流感病毒诱导肿瘤细胞凋亡的能力比A型流感病毒强,而且经紫外线照射后的流感病毒可能仍然具有一定的诱导细胞凋亡能力;在肿瘤治疗方面,B型流感病毒比A型流感病毒具有更大的研究和应用价值。
Objective To observe and compare the difference of apoptosis in tumer cells induced by different influenza viruses. Methods . The shapes of HeLa cells in different time were observed in the electron microscope after they were infected by influenza virus type A1, B and ultraviolet exposure virus respectively. We used Annexin V-FITC staining flow cytometry （FCM） to observe the percentage of apoptosis. Results Typical apoptosis in HeLa cells were observed in microscope after infected by influenza viruses type A1 and B 24 hours. The percentage of apoptosis increased along with time expanded and culminated from 12 to 24 hours. The maxima of the percentage of apoptosis induced by influenza virus type B, A1, ultraviolet exposure influenza B virus（UV-B） and ultraviolet exposure influenza A1 virus （UV-A1） come to 38.65% ,23.94%, 18. 20% and 10. 05% respectively. There have significant difference between influenza A1 and B virus （P〈0. 01）. Conclusion Influenza B virus is more strong than influenza A virus in the ability of inducing apoptosis. More over, the ultraviolet exposure influenza virus perhaps still has the certain ability of inducing apoptosis in HeLa cells. Compared with the influenza A virus, influenza B virus have greater research and application value in the treatment of cancer.
出处
《肿瘤防治研究》
CAS
CSCD
北大核心
2007年第9期675-677,共3页
Cancer Research on Prevention and Treatment
基金
湖南省教育厅青年基金资助项目(04B049)
