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ID:31057843
大小:728.50 KB
页数:6页
时间:2019-01-06
《雷帕霉素诱导细胞自噬促进乙型肝炎病毒的复制》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、雷帕霉素诱导细胞自噬促进乙型肝炎病毒的复制李霞,黄文娟,朱素菲,陈维贤(400010重庆,重庆医科大学附属第二医院检验科)[摘要]目的研究雷帕霉素诱导细胞产生自噬对乙型肝炎病毒(hepatitisBvirus,HBV)复制的影响。方法通过雷帕霉素诱导人肝癌细胞HepG22.15产生自噬,荧光显微镜和透射电镜下观察自噬小体形成,Westernblot检测诱导后HepG22.15细胞自噬标志蛋白LC3-II/LC3-I的表达水平;荧光定量PCR检测HBVmRNA水平;加入自噬抑制剂3-甲基腺嘌呤(3-MA),Westernblot检测自噬抑制后LC3-II/LC3-I的表达水
2、平,酶联免疫吸附试验(ELISA)检测乙肝病毒表面抗原(HBsAg)的表达,Southernblot检测HBVDNA水平,验证HBV复制情况。结果雷帕霉素诱导后,HepG22.15细胞在荧光显微镜和透射电镜下观察到自噬小体的形成,LC3-II/LC3-I比值显著上升(P<0.05);细胞诱导自噬后HBsAg和HBVmRNA显著增加(P<0.05),而加入自噬抑制剂3-MA后,HBsAg和HBVDNA均显著减少(P<0.05)。结论雷帕霉素可能通过诱导细胞自噬促进HBV的复制。[关键词]雷帕霉素;自噬;乙型肝炎病毒;复制[中图分类号]R373.2+1;R512.6[文献标志
3、码]ARapamycininducedautophagyandpromotesHBVreplicationLiXia,HuangWenjuan,ZhuSufei,ChenWeixian(TheDepartmentofLaboratoryMedicine,theSecondAffiliatedHospitalofChongqingMedicalUniversity,Chongqing,400010,China)[Abstract]ObjectiveTostudytheeffectofautophagyinducedbyRapamycinonHBVreplication.Me
4、thodsHepG22.15cellsweretreatedwithRapamycintoinduceautophagy,fluorescencemicroscopeandtransmissionelectronmicroscopy(SEM)wereusedtoobservetheautophagosomes,westernblotwasperformedtoanalysistheexpressionlevelofautophagymarkerproteinLC3-II/LC3-I;fluorescencequantitativeRT-PCRwasusedtodetect
5、thehepatitisBvirusmRNAlevels.Then,jointheautophagyinhibitor3-methyladenine(3-MA),westernblotwasemployedtodetecttheexpressionlevelofLC3-II/LC3-Iafterautophagyinhibited,Enzyme-linkedimmunosorbentassay(ELISA)wasusedtodetecttheexpressionofhepatitisBvirussurfaceantigen(HBsAg),thelevelofHBVDNAw
6、asevaluatedbySouthernblot.ResultsAutophagosomeswereobservedinHepG22.15cellstreatedwithRapamycinunderthefluorescencemicroscopeandtransmissionelectronmicroscopy,theexpressionlevelofLC3-II/LC3-Iwassignificantlyincreased(P<0.05).TheexpressionofHBsAgandHBVmRNAincreasedsignificantly(P<0.05)afte
7、rinductionofautophagy,andtheexpressionofHBsAgandHBVDNAweresignificantlyreduced(P<0.05)afterjoinedautophagyinhibitor3-MA.ConclusionsRapamycinmaypromotethereplicationoftheHBVbyinducingcellautophagy.[Keywords]Rapamycin;Autophagy;HepatitisBvirus;replicationSupportedbyth
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