Combined Transfection with EBV-Specific Epitopes and HLA-A2 genes is More Effective than Separate Transfection in Promoting CTL Lysis against Nasopharyngeal Carcinoma-中国期刊网

摘要 ToaugmentspecificcytotoxicTlymphocyte(CTL)lysisisapromisingstrategyforcancertherapy.Inthisstudy,weexaminedtheboostingeffectofCTLsuponautologouslymphoblastoidBcelllines(LCLs)transfectedwithdiverseplasmids,toexplorethepossibleCTL-basedimmunotherapyofnasopharyngealcarcinoma(NPC).FCManalysisdisplayedratherhighratio(＞30%)ofsuccessfullytransfectedLCLsbyutilizingtheDMRIE-Ckit.CTLassaysdemonstratedthatsubstantiallyhigherratioofCTLspecificlysiswasobservedupontheLCLstransfectedwithbothexpressionvectorsencodingEBV-specificepitopesandtheirpresentationmoleculeHLA-A2,incontrastwiththosetransfectedseparately.BytransfectingthevectorencodingHLA-A2alone,onlytheLCLsofHLA-A2+donorselicitedmarkedlyhigherCTLlysis.CTLassaysalsoshowedthatthereexistednomarkeddifferencesupontransfectionbyeitherdifferentvectors(pcDNA3,pNGVL3orpNGVL3-hFlex),ordifferentEBV-derivedpeptides(LMP2Pep1orLMP2Pep2),orwithorwithoutthedoubledDNAsequenceencodingpeptides.ThisstudyindicatedapromisingimmunotherapystrategyonNPCthroughboostingandelicitingtheEBV-specificCTLactivationbytransferringvectorsencodingbothEBV-specificepitopesandtheirpresentationmoleculeHLA-A2intoautologousLCL,thepresentationcellsofMHC/peptidetetramericcomplex.

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Combined Transfection with EBV-Specific Epitopes and HLA-A2 genes is More Effective than Separate Transfection in Promoting CTL Lysis against Nasopharyngeal Carcinoma

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Combined Transfection with EBV-Specific Epitopes and HLA-A2 genes is More Effective than Separate Transfection in Promoting CTL Lysis against Nasopharyngeal Carcinoma

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