2006
Alterations in CD46-mediated Tr1 regulatory T cells in patients with multiple sclerosis
Astier AL, Meiffren G, Freeman S, Hafler DA. Alterations in CD46-mediated Tr1 regulatory T cells in patients with multiple sclerosis. Journal Of Clinical Investigation 2006, 116: 3252-3257. PMID: 17099776, PMCID: PMC1635165, DOI: 10.1172/jci29251.Peer-Reviewed Original ResearchConceptsIL-10 secretionTr1 regulatory T cellsRegulatory T cellsHuman autoimmune diseasesMultiple sclerosisT cellsAutoimmune diseasesTr1 cellsIL-10Antiinflammatory cytokine IL-10Cytokine IL-10IFN-gamma secretionT cell functionT cell activationHuman T cellsTreg defectsTreg phenotypeTreg functionCostimulatory moleculesHealthy subjectsMurine modelCD46 costimulationCell activationCD28 costimulationPatients
2003
Rapamycin-resistant Proliferation of CD8+ T Cells Correlates with p27 kip1 Down-regulation and bcl-xL Induction, and Is Prevented by an Inhibitor of Phosphoinositide 3-Kinase Activity*
Slavik JM, Lim DG, Burakoff SJ, Hafler DA. Rapamycin-resistant Proliferation of CD8+ T Cells Correlates with p27 kip1 Down-regulation and bcl-xL Induction, and Is Prevented by an Inhibitor of Phosphoinositide 3-Kinase Activity*. Journal Of Biological Chemistry 2003, 279: 910-919. PMID: 14573608, DOI: 10.1074/jbc.m209733200.Peer-Reviewed Original ResearchMeSH KeywordsAnnexin A5Antibiotics, AntineoplasticBcl-X ProteinCD28 AntigensCD3 ComplexCD8-Positive T-LymphocytesCell Cycle ProteinsCell DivisionColoring AgentsCyclin DCyclin-Dependent Kinase Inhibitor p27CyclinsDose-Response Relationship, DrugDown-RegulationEnzyme InhibitorsEstersFluoresceinsHumansKineticsLymphocytesPhosphatidylinositol 3-KinasesProtein BindingProto-Oncogene Proteins c-bcl-2Signal TransductionSirolimusT-LymphocytesTime FactorsTumor Suppressor ProteinsConceptsInhibitor of phosphoinositideT cell receptorMammalian cell typesCell receptorBcl-xL inductionAction of rapamycinBcl-xL expressionT cellsHuman cellsCell survivalP27 Kip1Resistant proliferationCell typesPhosphoinositideHuman CD8RapamycinCellular proliferationEffect of rapamycinMicrobial infectionsCell populationsHigh-affinity T-cell receptorsSelective immunosuppressive effectT Cells CorrelateT cell populationsProliferation
2002
GAD65-reactive T cells are activated in patients with autoimmune type 1a diabetes
Viglietta V, Kent SC, Orban T, Hafler DA. GAD65-reactive T cells are activated in patients with autoimmune type 1a diabetes. Journal Of Clinical Investigation 2002, 109: 895-903. PMID: 11927616, PMCID: PMC150925, DOI: 10.1172/jci14114.Peer-Reviewed Original ResearchMeSH KeywordsAbataceptAdultAntigens, CDAntigens, DifferentiationAutoimmunityB7-1 AntigenB7-2 AntigenCD28 AntigensCell DivisionCTLA-4 AntigenDiabetes Mellitus, Type 1FemaleGlutamate DecarboxylaseHumansImmunoconjugatesInterferon-gammaInterleukin-13IsoenzymesMaleMembrane GlycoproteinsSignal TransductionT-LymphocytesConceptsGAD65-reactive T cellsType 1 diabetesAutoreactive T cellsT cellsB7-1New-onset type 1 diabetesPancreatic islet cell antigensInsulin-dependent type 1 diabetesGlutamic acid decarboxylase 65B7-2 engagementType 1A diabetesMemory T cellsStimulation ex vivoIslet cell antigensB7-2 moleculesT cell proliferationB7-1 costimulationAutoimmune diseasesCTLA-4Healthy controlsPathogenic roleSelective blockadeCytokine secretionHuman diabetesT lymphocytes
2001
Uncoupling p70s6 Kinase Activation and Proliferation: Rapamycin-Resistant Proliferation of Human CD8+ T Lymphocytes
Slavik J, Lim D, Burakoff S, Hafler D. Uncoupling p70s6 Kinase Activation and Proliferation: Rapamycin-Resistant Proliferation of Human CD8+ T Lymphocytes. The Journal Of Immunology 2001, 166: 3201-3209. PMID: 11207273, DOI: 10.4049/jimmunol.166.5.3201.Peer-Reviewed Original ResearchMeSH KeywordsAntibodies, MonoclonalCD2 AntigensCD28 AntigensCD3 ComplexCD8 AntigensCD8-Positive T-LymphocytesCell Line, TransformedClone CellsDose-Response Relationship, DrugDose-Response Relationship, ImmunologicDrug ResistanceEnzyme ActivationEpitopes, T-LymphocyteHLA-A AntigensHumansImmunosuppressive AgentsInterleukin-2Lymphocyte ActivationMajor Histocompatibility ComplexModels, ImmunologicalRibosomal Protein S6 KinasesSirolimusT-Lymphocyte SubsetsConceptsT cell clonesT cellsEffect of rapamycinHuman T cell responsesPeripheral blood T cellsCell clonesHeterogeneous proliferative responsesT cell responsesBlood T cellsT cell proliferationSpecific costimulatory signalsGraft infiltrationResistant proliferationInhibition of AgGraft rejectionHuman CD8IL-2RT lymphocytesProliferative responseCostimulatory signalsCell responsesPresence of rapamycinCell proliferationRapamycinProliferation
1999
The B7–CD28/CTLA-4 costimulatory pathways in autoimmune disease of the central nervous system
Anderson D, Sharpe A, Hafler D. The B7–CD28/CTLA-4 costimulatory pathways in autoimmune disease of the central nervous system. Current Opinion In Immunology 1999, 11: 677-683. PMID: 10631554, DOI: 10.1016/s0952-7915(99)00036-9.Peer-Reviewed Original ResearchConceptsSelf-reactive T cellsB7-CD28/CTLAAutoimmune diseasesT cellsTh1/Th2 cell differentiationB7-CD28 costimulationHuman autoimmune diseasesCentral nervous systemTh2 cell differentiationCostimulatory pathwayEffector phaseCTLA-4Nervous systemCritical roleDiseaseCTLARecent studiesCell differentiationCellsPast yearPathwayAutoimmunityCD28InitiationCostimulationDirect analysis of viral-specific CD8+ T cells with soluble HLA-A2/Tax11-19 tetramer complexes in patients with human T cell lymphotropic virus-associated myelopathy.
Bieganowska K, Höllsberg P, Buckle G, Lim D, Greten T, Schneck J, Altman J, Jacobson S, Ledis S, Hanchard B, Chin J, Morgan O, Roth P, Hafler D. Direct analysis of viral-specific CD8+ T cells with soluble HLA-A2/Tax11-19 tetramer complexes in patients with human T cell lymphotropic virus-associated myelopathy. The Journal Of Immunology 1999, 162: 1765-71. PMID: 9973440, DOI: 10.4049/jimmunol.162.3.1765.Peer-Reviewed Original ResearchMeSH KeywordsAdultB7-1 AntigenCD28 AntigensCD8-Positive T-LymphocytesFemaleGene Products, taxHLA-A2 AntigenHuman T-lymphotropic virus 1HumansLymphocyte ActivationMaleMiddle AgedParaparesis, Tropical SpasticPeptide FragmentsPhenotypeProtein ConformationReceptors, Antigen, T-Cell, alpha-betaReceptors, ChemokineReceptors, Interleukin-2SolubilityConceptsT cellsIL-2RMHC class I tetramersHuman T-cell lymphotropic virusViral-specific CD8Class I tetramersProgressive neurologic diseaseDifferent chemokine receptorsHLA-A2 alleleCentral nervous systemTCR Vbeta chainsReactive CD8TCR usageInflammatory infiltrateVbeta chainsChemokine receptorsNeurologic diseaseImmune responseCD8Lymphotropic virusMyelopathyNervous systemPatientsHTLVClonal expansion
1997
Expression of a hypoglycosylated form of CD86 (B7-2) on human T cells with altered binding properties to CD28 and CTLA-4.
Höllsberg P, Scholz C, Anderson DE, Greenfield EA, Kuchroo VK, Freeman GJ, Hafler DA. Expression of a hypoglycosylated form of CD86 (B7-2) on human T cells with altered binding properties to CD28 and CTLA-4. The Journal Of Immunology 1997, 159: 4799-805. PMID: 9366404, DOI: 10.4049/jimmunol.159.10.4799.Peer-Reviewed Original ResearchMeSH KeywordsAbataceptAnimalsAntibodies, MonoclonalAntigens, CDAntigens, DifferentiationB7-2 AntigenCD28 AntigensCD3 ComplexCD4-Positive T-LymphocytesCell Line, TransformedCHO CellsClone CellsCricetinaeCTLA-4 AntigenGlycosylationHumansImmunoconjugatesLymphocyte ActivationMembrane GlycoproteinsProtein BindingT-Lymphocyte SubsetsConceptsPost-translational modificationsCell type-specific post-translational modificationsHuman T cellsDifferent cell typesMajor costimulatory signalChinese hamster ovary cellsHamster ovary cellsCell clonesFusion proteinCostimulatory signalsCell typesT cell activationFunctional significanceOvary cellsBiochemical analysisSurface membraneCostimulatory functionDetectable bindingExpressionT cellsClonesCell activationCTLA-4-Ig fusion proteinCellsCell expressionB7.2 expressed by T cells does not induce CD28-mediated costimulatory activity but retains CTLA4 binding: implications for induction of antitumor immunity to T cell tumors.
Greenfield EA, Howard E, Paradis T, Nguyen K, Benazzo F, McLean P, Höllsberg P, Davis G, Hafler DA, Sharpe AH, Freeman GJ, Kuchroo VK. B7.2 expressed by T cells does not induce CD28-mediated costimulatory activity but retains CTLA4 binding: implications for induction of antitumor immunity to T cell tumors. The Journal Of Immunology 1997, 158: 2025-34. PMID: 9036945, DOI: 10.4049/jimmunol.158.5.2025.Peer-Reviewed Original ResearchMeSH KeywordsAbataceptAnimalsAntigens, CDAntigens, DifferentiationB7-2 AntigenCD28 AntigensCell DivisionCTLA-4 AntigenFemaleImmunoconjugatesLymphocyte ActivationMembrane GlycoproteinsMiceMice, Inbred BALB CMice, Inbred C57BLProtein BindingT-LymphocytesThymomaThymus NeoplasmsTransfectionTumor Cells, Cultured
1996
Activation of human T cell lymphotropic virus type I-infected T cells is independent of B7 costimulation.
Scholz C, Freeman GJ, Greenfield EA, Hafler DA, Höllsberg P. Activation of human T cell lymphotropic virus type I-infected T cells is independent of B7 costimulation. The Journal Of Immunology 1996, 157: 2932-8. PMID: 8816399, DOI: 10.4049/jimmunol.157.7.2932.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodies, MonoclonalAntigen-Presenting CellsAntigens, CDAutoimmunityB7-1 AntigenB7-2 AntigenBase SequenceCD28 AntigensCHO CellsClone CellsCricetinaeCricetulusEnzyme ActivationHLA-DR AntigensHLA-DRB1 ChainsHuman T-lymphotropic virus 1HumansInterferon-gammaInterleukin-4Interleukin-5Janus Kinase 3Lymphocyte ActivationMembrane GlycoproteinsMolecular Sequence DataMyelin Basic ProteinProtein-Tyrosine KinasesSignal TransductionT-Lymphocyte SubsetsTransfectionConceptsHuman T-cell lymphotropic virus type ILymphotropic virus type IB7 costimulationT cell clonesT cellsB7-1Virus type IIL-4IL-5B7-2IFN-gammaAutoreactive T cell responsesCell clonesAg-specific signalAutoimmune-like diseaseT cell responsesAutoreactive T cellsHTLV-I infectionB7-2 costimulationB7-2 moleculesUninfected T cellsType IAutoimmune responseB7 expressionCytokine secretionHTLV-I-induced T-cell activation.
Buckle GJ, Hafler DA, Höllsberg P. HTLV-I-induced T-cell activation. JAIDS Journal Of Acquired Immune Deficiency Syndromes 1996, 13 Suppl 1: s107-13. PMID: 8797712, DOI: 10.1097/00042560-199600001-00018.Peer-Reviewed Original ResearchConceptsT cell activationT cellsUninfected T cellsT cell interactionsMyelopathy/tropical spastic paraparesisHuman T-cell lymphotropic virus type ILymphotropic virus type ITropical spastic paraparesisInfected T cellsT cell clonesIL-2 productionInterleukin-2 productionVirus type ISpastic paraparesisSpontaneous proliferationCD28 pathwayGeneralized activationCostimulatory signalsImmune systemSeparate mechanismsHTLVProlonged stateType IActivationCells
1992
CTLA-4 and CD28 mRNA are coexpressed in most T cells after activation. Expression of CTLA-4 and CD28 mRNA does not correlate with the pattern of lymphokine production.
Freeman GJ, Lombard DB, Gimmi CD, Brod SA, Lee K, Laning JC, Hafler DA, Dorf ME, Gray GS, Reiser H. CTLA-4 and CD28 mRNA are coexpressed in most T cells after activation. Expression of CTLA-4 and CD28 mRNA does not correlate with the pattern of lymphokine production. The Journal Of Immunology 1992, 149: 3795-801. PMID: 1281186, DOI: 10.4049/jimmunol.149.12.3795.Peer-Reviewed Original ResearchMeSH KeywordsAbataceptAnimalsAntigens, CDAntigens, DifferentiationAntigens, Differentiation, T-LymphocyteAntigens, SurfaceB7-1 AntigenBase SequenceBlotting, NorthernCD28 AntigensCell Adhesion MoleculesCell LineCTLA-4 AntigenHumansImmunoconjugatesInterferon-gammaInterleukinsLeukemia, T-CellLymphocyte ActivationLymphokinesMiceMolecular Sequence DataOligonucleotide ProbesPolymerase Chain ReactionRNA, MessengerT-LymphocytesTumor Necrosis Factor-alphaConceptsT cell clonesCTLA-4 mRNACTLA-4T cellsActivated T cellsT cell activationT cell linesMurine T cell clonesCell clonesCD28 mRNACostimulatory signalsT cell receptor-dependent stimulationCell activationNormal T cell subsetsAg-presenting cellsHuman T cell clonesT cell subsetsExpression of CD28Th2 cytokine profileMost T cellsLeukemic T cell lineCell linesReceptor-dependent stimulationSuch costimulatory signalsInteraction of B7