简介：Severeacuterespiratorysyndrome(SARS)isaseriousandfatalinfectiousdiseasecausedbySARScoronavirus(SARS-Cov),anovelhumancoronavirus.SARS-Covinfectionstimulatescytokines(e.g.,IL-10,IFN-γ,IL-1,etc.)expressiondramatically,andTlymphocytesandtheirsubsetsCD4+andCD8+Tcellsaredecreasedafteronsetofthedisease.SARS-specificIgGantibodyisgeneratedinthesecondweekandpersistsforalongtime,whereasIgMisexpressedtransiently.ThespikeproteinandneucleocapsidproteinaremostabundantinSARS-Covandcontributedominantlytotheantibodyproductionduringthecourseofdisease.Spikeprotein,especiallytheACE-2bindingregion(318-510aa)iscapableofproducingneutralizingantibodytoSARS-Cov.NeucleocapsidproteininducesprotectivespecificCTLtoSARS-Cov.Therefore,applicationswithspikesubunit,neucleocapsidsubunitaswellasinactivatedSARS-CovarethreeprospectivevaccinationstrategiesforSARS.

简介：Severeacuterespiratorysyndrome(SARS)emergedin2002asasevereandhighlycontagiousinfectiousdiseasethatrapidlyspreadtoanumberofdifferentcountries.Thecollaborativeeffortsoftheglobalscientificcommunityhaveprovided,withinashortperiodoftime,substantialinsightsintothemolecularbiologyandimmunologyofSARS-CoV.Althoughtheoutbreakhasbeencontained,thereiscontinuousconcernthatthevirusmayresurfaceintothehumanpopulationthroughseasonalchanges,animalreservoirsorlaboratoryaccidents.TheseveremorbidityandmortalityassociatedwithSARSmakeitimperativethataneffectivevaccinebedevelopedtopreventreemergenceandepidemicsinthefuture.Cellular&MolecularImmunology.2005;2(2):101-105.

简介：SincetheoutbreakofaSARSepidemiclastyear,significantadvanceshavebeenmadeonourunderstandingofthemechanismsofinteractionbetweentheSARScoronavirus(CoV)andtheimmunesystem.StronghumoralresponseshavebeenfoundinmostpatientsfollowingSARS-CoVinfection,withhightitersofneutralizingAbspresentintheirconvalescentsera.Thenucleocapsid(N)andspike(S)proteinsofSARS-CoVappeartobethedominantantigensrecognizedbyserumAbs.CD4+TcellresponsesagainsttheNproteinhavebeenobservedinSARSpatientsandanHLA-A2-restrictedcytotoxicTlymphocyteepitopeintheSproteinhasbeenidentified.ItislikelythattheimmuneresponsesinducedbySARS-CoVinfectioncouldalsocausepathologicaldamagetothehost,especiallyinthecaseofproinflammatorycytokines.ThereisalsoevidencesuggestingthatSARS-CoVmightbeabletodirectlyinvadecellsoftheimmunesystem.OurunderstandingontheinteractionbetweenSARS-CoV,theimmunesystemandlocaltissuesisessentialtofuturediagnosis,controlandtreatmentofthisverycontagiousdisease.

简介：ToinvestigatethesignificanceoftheSARS-associatedcoronavirus(SARS-CoV)antibody,detectedbyELISAandindirectimmunofluorescenceassays(IFA)fortheSARS-CoVVeroE6celllysates,innon-SARSsubjects,114serumsamplesfromhealthycontrolsand104serumspecimensfromautoimmunediseasepatientswerecollected.TheresultsofELISAshowedthatamong114serafromhealthycontrols,4(3.5%)werepositiveofSARS-CoV-IgGantibodyand114(100%)wereallnegativeofSARS-CoV-IgMantibody;thespecificityofSARS-CoV-IgGantibodyforSARSpatientswas96.5%,butthespecificityofbothSARS-CoV-IgGand-IgMantibodiesforSARSpatientswas100%.In58caseswithSLE,positiveratesofSARS-CoV-IgGand-IgMantibodieswere32.8%(19/58)and8.6%(5/58),respectively,inwhich11cases(19%)werepositiveofbothSARS-CoV-IgGand-IgMantibodies;in10caseswithSS,positiverateofbothSARS-CoV-IgGand-IgMantibodieswas10%(1/10);in16caseswithMCTD,positiverateofSARS-CoV-IgGwas37.5%(6/16),positiverateofbothSARS-CoV-IgGand-IgMantibodieswas6.3%(1/16);in20caseswithRA,onecasewaspositive(5%)ofSARS-CoV-IgG.However,ofallsampleswithpositiveSARS-CoV-IgGand-IgMantibodiesforautoimmunediseasesandhealthycontrols,SARS-CoVRNAandantibodieswereallnegativebyRT-PCRandIFA.AllserafornegativeorpositiveELISAresultswerealsonegativeorpositiveresultsusingELISAwithVeroE6cellslysates.ThesestudiesshowedthatSARS-CoVVeroE6celllysatesfortheELISAtodetectSARS-CoVantibodiescouldleadtothefalse-positivereactionsorcross-reactionsofSARS-CoVantibodiesinnon-SARSdiseasesandhealthycontrols,andthefalse-positivereactionsorcross-reactionswererelatedtoVeroE6celllysatesandautoantibodiesinnon-SARSpopulation.

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