HBV转染对TWEAK诱导凋亡的影响及IFN-γ对凋亡的调节

Chinese Journal of Pathophysiology(2010)

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Abstract
目的:探讨新型凋亡分子TNF-like weak inducer of apoptosis(TWEAK)对乙型肝炎病毒(HBV)转染的人肝癌细胞系的凋亡诱导作用及γ-干扰素(IFN-γ)对该凋亡过程的影响。方法:以稳定转染了pCD-NA3/1.1HBV的肝癌细胞系BEL-7402-pCDNA3/1.1HBV为模型,并以稳定转染空载体的肝癌细胞BEL-7402/pcDNA3作为对照,经CCK-8法检测HBV转染前后TWEAK对细胞生长的抑制效应,terminal transferase dUTP nick end labeling(TUNEL)、半胱氨酸天冬氨酸蛋白酶-3(caspase-3)活性检测试剂盒检测HBV转染前后TWEAK诱导肝癌细胞的凋亡情况及IFN-γ对TWEAK诱导细胞凋亡的调节作用。结果:HBV转染促进TWEAK诱导的细胞凋亡,IFN-γ可以增强HBV转染细胞对TWEAK诱导凋亡的敏感性。结论:机体感染HBV后,TWEAK可能参与HBV感染肝细胞的清除过程;IFN-γ在调节TWEAK诱导的病毒感染细胞凋亡中发挥重要作用。
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Key words
Interferon-gamma,Apoptosis,Hepatitis B virus,TNF-like weak inducer of apoptosis
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