简介:Thecurrentconceptof“AdoptiveTCellImmunotherapyofCancer”isquitedifferentfromhowitwasoriginallyconceived.Withthedevelopmentofmoderntechnologyinmolecularbiology,cellbiology,immunologyandbiochemistryduringthelasttwentyyearsorso,adoptiveimmunotherapyhasgrownfromitsinitialformofasimple“bloodcelltransfer”intoitspresentprocesswhichinvolveshostvauccination,effectorcellactivation/polarizationandgeneticmodification.Withtheuseofimmuneadjuvantsandtheidentification/characterizationoftumor-reactiveTcellsubsets,orincombinationwithothertherapeuticstrategies,adoptivelytransferredTcellshavebecomemuchmorepotentinmediatingtumorregression.Inaddition,studiesonthetraffickingofinfusedTcells,celltransferperformedinlymphopenicmodels,aswellasthediscoveryofnoveltechniquesinimmunemonitoringforthegenerationofeffectorcellsinvitroandaftercelltransferinvivohaveprovidedusefultoolstofurtherimprovethetherapeuticefficacyofthisapproach.ThisarticlewillreviewtheserelatedaspectsofadoptiveTcellimmunotherapyofcancerwithspecificcommentsoncertaincriticalareasintheapplicationofthisapproach.Withtherapidlyevolvingadvancesinthisarea,itishopedthatthiscellularimmunologictherapyasitwasconceptualizedinthepast,canbecomemoreusefulinthetreatmentofhumancancerinthenearfuture.
简介:TheeffectofPentoxifylline(PTX)ontype1diabeteswasinvestigatedbymeansofthestudiesontheexpressionsofcytokinemRNAinpancreasandtheFas-Fasl,onisletcellsofNODmice.NODmiceweretreatedwithFFXfrom4-6wk,andthenfrom8-12wk.Aftertreatment,itwasfoundthattheincidenceofdiabetesinNODmiceatagesof30wkwasreducedto25%ingroupofmicetreatedwithPTX,incomparisonto73.3%incaseofmiceinjectedwithPBS,andthedegreeofinsulitisinthePTXtreatedmicewaslowerthanthatofthePBSinjectedmice.RT-PCRanalysisrevealeddown-regulatoryeffectontheexpressionsofIFN-γandTNF-αmRNAinPTXtreatedmice,buttherewasnoanyeffectontheexpressionofIL-10.AstotheexpressionofFas,therewasmarkeddecreaseinthemeancytoplasmicintegralopticaldensity(IOD)inPTXtreatedmice,buttherewaslittledifferencebetweenFIXandPBSgroupsintheexpressionofFasL.TheseresultsindicatedthatFIXcouldpreventthedevelopmentofdiabetesinNODmice,whichmightberelatedtotheregulationofTh1/Th2imbalanceandthedecreasedexpressionofFasinisletcells.
简介:TheZ10andZ37strainsofhemorrhagicfeverwithrenalsyndrome(HFRS)virusandtheMongoliangerbil(Merionsunguiculatus)kidneycellswereusedtopreparetheinactivatedbivalentvaccine.AphaseⅡclinicaltrialuseofthisvaccinewasmadein750Chinesevolunteers.Theresultsshowedthatthesidereactionratewas2.5%andthesero-conversionrateofneutralizingantibodiesagainstHantaanandSeoulvirusesintheinoculatedvolunteerswere87.6%and96.3%respectively.