天津医药2024年7月第47卷第7期
683细胞与分子生物学HCVCore基因真核表达载体构建及其对
HeLa细胞自噬的影响
王敏敏1,魏建宏2,任来峰3△
摘要:目的的影响。方法
构建丙型肝炎病毒(HCV)核心蛋白(Core)真核表达载体,并研究其对人宫颈癌HeLa细胞自噬功能以HCV复制子质粒pJFH1为模板,PCR法扩增HCVCore基因片段,经纯化回收后与PLVX-IRES-
ZsGreen1载体用同源重组法相连,构建PLVX-IRES-ZsGreen1-Core重组质粒,并经测序验证其序列的正确性。转染宫颈癌HeLa细胞,并设PLVX-IRES-ZsGreen1-Core重组质粒转染组、PLVX-IRES-ZsGreen1空载体转染对照组以及检测自噬生物标记物微管相关蛋白1轻链3(LC3)的表达水平。结果
未转染质粒空白对照组,通过免疫印迹法验证HCVCore蛋白在HeLa细胞中的表达,并用免疫荧光(IF)和免疫印迹
获得PLVX-IRES-ZsGreen1-Core重组质粒,
测序结果表明构建的重组质粒序列完全正确,HCVCore重组蛋白可在HeLa细胞中有效表达;免疫荧光和免疫印迹结果表明,HCVCore过表达细胞LC3焦点和LC3Ⅱ蛋白表达水平明显增多,PLVX-IRES-ZsGreen1-Core重组质粒转染组的细胞LC3Ⅱ水平(1.069±0.049)高于PLVX-IRES-ZsGreen1空载体转染对照组(0.776±0.047),差异有统计学意义(P<0.05)。结论自噬。
关键词:丙型肝炎;肝炎病毒属;病毒核心蛋白质类;自噬;重组质粒中图分类号:R34,R373.21
文献标志码:A
DOI:10.11958/20242209
成功构建了PLVX-IRES-ZsGreen1-Core重组质粒,HCVCore蛋白过表达可诱导HeLa细胞
ConstructionofeukaryoticexpressionvectorofHCVCoregeneanditsinfluenceonautophagyofHeLacells
1DepartmentofNursing,FenyangCollegeShanxiMedicalUniversity,Fenyang032200,China;2DepartmentofAnatomy,DepartmentofBasicMedicine,FenyangCollegeShanxiMedicalUniversity;3ImmuneDepartment,ShanxiCancerHospital
△
WANGMin-min1,WEIJian-hong2,RENLai-feng3△CorrespondingAuthor
E-mail:rlaifeng@163.com
investigatetheeffectofHCVCoreproteinontheautophagyofhumancervicalcancerHeLacells.Methods
Abstract:ObjectiveToconstructeukaryoticexpressionvectorofhepatitisCvirus(HCV)coreprotein,and
Thefragment
ofcorewasobtainedbyPCRfromHCVrepliconplasmidpJFH1.Afterpurificationandrecovery,theDNAfragmentwas
connectedwiththePLVX-IRES-ZsGreen1vectorusingthehomologousrecombinationmethod.DNAsequencingwasusedtransfectioncontrolgroupandcontrolgroupwithouttransfectionplasmidblank.Westernblotassayandimmunofluorescenceassociatedprotein1lightchain3,LC3)inHeLacells.Results
toverifythecorrectnessofthesequence.PLVX-IRES-ZsGreen1-corewastransfectedintoHeLacells.Cellsweredivided
intoPLVX-IRES-ZsGreen1-corerecombinantplasmidtransfectiongroup,PLVX-IRES-ZsGreen1emptycarrier(IF)wereappliedtodetecttheexpressionofHCVCoreproteinandtheautophagy-relatedbiomarker(microtubule-obtained.Thesequencingresultsshowedthatthesequenceofrecombinantplasmidwascompletelycorrected,andtheHCVCoreproteincanbeeffectivelyexpressedinHeLacells.TheresultsofWesternblotassayandimmunofluorescencealsoinPLVX-IRES-ZsGreen1emptyvectortransfectioncontrolgroup(0.776±0.047,P<0.05).Conclusion
Keywords:hepatitisC;hepacivirus;viralcoreproteins;autophagy;recombinantplasmid
showedthatLC3ⅡproteinlevelandLC3fociwereincreasedsignificantlyincellswithHCVCoreprotein.ThelevelofLC3IIwassignificantlyhigherinPLVX-IRES-ZsGreen1-Corerecombinantplasmidtransfectiongroup(1.069±0.049)thanthatexpressionvectorofHCVCoreissuccessfullyconstructed,andtheHCVCoreproteincaninduceautophagyinHeLacells.
基金项目:山西省自然科学基金项目(2014021037-9);山西省大学生创新创业训练计划项目(2014052)
作者单位:1山西医科大学汾阳学院护理系(邮编032200);2山西医科大学汾阳学院基础医学部解剖教研室;3山西省肿瘤医院免疫室作者简介:王敏敏(1990),女,硕士,助教,主要从事肿瘤免疫学方向研究
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PLVX-IRES-ZsGreen1-corerecombinantplasmidwas
Theeukaryotic
通讯作者E-mail:rlaifeng@163.com