2022
Reemergence of pathogenic, autoantibody-producing B cell clones in myasthenia gravis following B cell depletion therapy
Fichtner ML, Hoehn KB, Ford EE, Mane-Damas M, Oh S, Waters P, Payne AS, Smith ML, Watson CT, Losen M, Martinez-Martinez P, Nowak RJ, Kleinstein SH, O’Connor K. Reemergence of pathogenic, autoantibody-producing B cell clones in myasthenia gravis following B cell depletion therapy. Acta Neuropathologica Communications 2022, 10: 154. PMID: 36307868, PMCID: PMC9617453, DOI: 10.1186/s40478-022-01454-0.Peer-Reviewed Original ResearchConceptsB cell depletion therapyB cell clonesMuSK-MG patientsMyasthenia gravisB cellsMG patientsDepletion therapyCell clonesAutoantibody-producing B cellsMuscle-specific tyrosine kinaseComplete stable remissionB cell receptor repertoireCell receptor repertoireValuable candidate biomarkersB cell receptorMG relapseClinical relapseStable remissionDisease relapseAutoimmune disordersRelapsePatientsAcetylcholine receptorsCandidate biomarkersReceptor repertoire
2021
Elevated N-Linked Glycosylation of IgG V Regions in Myasthenia Gravis Disease Subtypes.
Mandel-Brehm C, Fichtner ML, Jiang R, Winton VJ, Vazquez SE, Pham MC, Hoehn KB, Kelleher NL, Nowak RJ, Kleinstein SH, Wilson MR, DeRisi JL, O'Connor KC. Elevated N-Linked Glycosylation of IgG V Regions in Myasthenia Gravis Disease Subtypes. The Journal Of Immunology 2021, 207: 2005-2014. PMID: 34544801, PMCID: PMC8492536, DOI: 10.4049/jimmunol.2100225.Peer-Reviewed Original ResearchConceptsMyasthenia gravisB-cell-mediated autoimmune diseasesBCR repertoireCell-mediated autoimmune diseaseTotal BCR repertoireTotal circulating IgGSubset of patientsB cell repertoireElevated NGene segment usageMG subtypesAutoimmune disordersAutoimmune diseasesHealthy donorsCell repertoireDisease subtypesDistinct subtypesReceptor repertoireAdaptive immune receptor repertoiresV regionsAutoantigen bindingPatientsSegment usageSubtypesImmune receptor repertoiresImmunophenotyping assessment in a COVID-19 cohort (IMPACC): A prospective longitudinal study
, , Rouphael N, Maecker H, Montgomery R, Diray-Arce J, Kleinstein S, Altman M, Bosinger S, Eckalbar W, Guan L, Hough C, Krammer F, Langelier C, Levy O, McEnaney K, Peters B, Rahman A, Rajan J, Sigelman S, Steen H, van Bakel H, Ward A, Wilson M, Woodruff P, Zamecnik C, Augustine A, Ozonoff A, Reed E, Becker P, Higuita N, Altman M, Atkinson M, Baden L, Becker P, Bime C, Brakenridge S, Calfee C, Cairns C, Corry D, Davis M, Augustine A, Ehrlich L, Haddad E, Erle D, Fernandez-Sesma A, Hafler D, Hough C, Kheradmand F, Kleinstein S, Kraft M, Levy O, McComsey G, Melamed E, Messer W, Metcalf J, Montgomery R, Nadeau K, Ozonoff A, Peters B, Pulendran B, Reed E, Rouphael N, Sarwal M, Schaenman J, Sekaly R, Shaw A, Simon V. Immunophenotyping assessment in a COVID-19 cohort (IMPACC): A prospective longitudinal study. Science Immunology 2021, 6: eabf3733. PMID: 34376480, PMCID: PMC8713959, DOI: 10.1126/sciimmunol.abf3733.Peer-Reviewed Original ResearchConceptsCOVID-19 cohortProspective longitudinal studyHost immune responseLongitudinal studyCOVID-19Identification of biomarkersHospitalized patientsRespiratory secretionsClinical criteriaDisease progressionImmune responseRadiographic dataImmunologic assaysEffective therapeuticsOptimal timingStudy designBiologic samplingSuch interventionsCohortSeveritySample collectionAssay protocolsPatientsCutting Edge: Distinct B Cell Repertoires Characterize Patients with Mild and Severe COVID-19
Hoehn KB, Ramanathan P, Unterman A, Sumida TS, Asashima H, Hafler DA, Kaminski N, Dela Cruz CS, Sealfon SC, Bukreyev A, Kleinstein SH. Cutting Edge: Distinct B Cell Repertoires Characterize Patients with Mild and Severe COVID-19. The Journal Of Immunology 2021, 206: 2785-2790. PMID: 34049971, PMCID: PMC8627528, DOI: 10.4049/jimmunol.2100135.Peer-Reviewed Original ResearchConceptsSevere COVID-19Mild COVID-19B cell responsesMemory B cellsB cell repertoireB cellsCell repertoireCOVID-19Cell responsesExtrafollicular B cell responsesLong-term immunitySymptomatic COVID-19Onset of symptomsB cell populationsGerminal center reactionProtective immunityPlasma cellsSingle-cell RNA sequencingCenter reactionPatientsCell populationsImmunityRNA sequencingCellsPostvaccinationImmune dysregulation and autoreactivity correlate with disease severity in SARS-CoV-2-associated multisystem inflammatory syndrome in children
Ramaswamy A, Brodsky NN, Sumida TS, Comi M, Asashima H, Hoehn KB, Li N, Liu Y, Shah A, Ravindra NG, Bishai J, Khan A, Lau W, Sellers B, Bansal N, Guerrerio P, Unterman A, Habet V, Rice AJ, Catanzaro J, Chandnani H, Lopez M, Kaminski N, Dela Cruz CS, Tsang JS, Wang Z, Yan X, Kleinstein SH, van Dijk D, Pierce RW, Hafler DA, Lucas CL. Immune dysregulation and autoreactivity correlate with disease severity in SARS-CoV-2-associated multisystem inflammatory syndrome in children. Immunity 2021, 54: 1083-1095.e7. PMID: 33891889, PMCID: PMC8043654, DOI: 10.1016/j.immuni.2021.04.003.Peer-Reviewed Original ResearchConceptsMIS-C patientsDisease severityInflammatory syndromeTCR repertoireSARS-CoV-2-associated multisystem inflammatory syndromeAsymptomatic SARS-CoV-2 infectionSARS-CoV-2 infectionAdult COVID-19Post-infectious complicationsMultisystem inflammatory syndromeCytotoxicity genesHealthy pediatricImmune dysregulationMemory TActive infectionMyeloid dysfunctionPatientsSingle-cell RNA sequencingFlow cytometrySerum proteomicsRepertoire analysisElevated expressionSeverityAlarminsCOVID-19
2019
Phenotypic and Ig Repertoire Analyses Indicate a Common Origin of IgD−CD27− Double Negative B Cells in Healthy Individuals and Multiple Sclerosis Patients
Fraussen J, Marquez S, Takata K, Beckers L, Montes Diaz G, Zografou C, Van Wijmeersch B, Villar LM, O'Connor KC, Kleinstein SH, Somers V. Phenotypic and Ig Repertoire Analyses Indicate a Common Origin of IgD−CD27− Double Negative B Cells in Healthy Individuals and Multiple Sclerosis Patients. The Journal Of Immunology 2019, 203: 1650-1664. PMID: 31391234, PMCID: PMC6736705, DOI: 10.4049/jimmunol.1801236.Peer-Reviewed Original ResearchConceptsDN B cellsDouble-negative B cellsMultiple sclerosis patientsMS patientsNegative B cellsHealthy controlsClass-switched memoryB cellsAdaptive immune receptor repertoire sequencingSclerosis patientsRepertoire sequencingFrequency of CD95Naive B cellsUnique differentiation pathwayLow CD5Proinflammatory characteristicsImmune agingCD38 expressionHealthy individualsPatientsFlow cytometryLow mutation loadCD27Repertoire analysisMaturation state
2014
Influence of seasonal exposure to grass pollen on local and peripheral blood IgE repertoires in patients with allergic rhinitis
Wu YC, James LK, Vander Heiden J, Uduman M, Durham SR, Kleinstein SH, Kipling D, Gould HJ. Influence of seasonal exposure to grass pollen on local and peripheral blood IgE repertoires in patients with allergic rhinitis. Journal Of Allergy And Clinical Immunology 2014, 134: 604-612. PMID: 25171866, PMCID: PMC4151999, DOI: 10.1016/j.jaci.2014.07.010.Peer-Reviewed Original ResearchConceptsHealthy control subjectsNasal biopsy specimensAllergic rhinitisControl subjectsImmunoglobulin heavy chain geneBiopsy specimensIgE repertoireAllergic diseasesPeripheral bloodOngoing germinal center reactionsClonal relatednessNatural pollen exposureSeasonal allergic rhinitisPollen seasonRespiratory allergic diseasesIgH sequencesAntigen-driven selectionGerminal center reactionGrass pollen seasonBlood IgEAtopic statusIgG classAntibody classPatientsPollen exposureShared VH1-46 gene usage by pemphigus vulgaris autoantibodies indicates common humoral immune responses among patients
Cho MJ, Lo AS, Mao X, Nagler AR, Ellebrecht CT, Mukherjee EM, Hammers CM, Choi EJ, Sharma PM, Uduman M, Li H, Rux AH, Farber SA, Rubin CB, Kleinstein SH, Sachais BS, Posner MR, Cavacini LA, Payne AS. Shared VH1-46 gene usage by pemphigus vulgaris autoantibodies indicates common humoral immune responses among patients. Nature Communications 2014, 5: 4167. PMID: 24942562, PMCID: PMC4120239, DOI: 10.1038/ncomms5167.Peer-Reviewed Original ResearchConceptsHumoral immune responsePemphigus vulgarisGene usageImmune responseAnti-Dsg3 antibodiesSomatic mutationsRequirement of mutationsPemphigus vulgaris autoantibodiesBlistering diseasePV patientsVH gene usagePatientsDesmoglein 3Unrelated patientsAutoAbsAutoantibodiesAutoreactivityDsg3MutationsGermline sequencesAbReplacement mutationsVDJ recombinationDiseaseAntibodies
2013
Protein array–based profiling of CSF identifies RBPJ as an autoantigen in multiple sclerosis
Querol L, Clark PL, Bailey MA, Cotsapas C, Cross AH, Hafler DA, Kleinstein SH, Lee JY, Yaari G, Willis SN, O'Connor KC. Protein array–based profiling of CSF identifies RBPJ as an autoantigen in multiple sclerosis. Neurology 2013, 81: 956-963. PMID: 23921886, PMCID: PMC3888197, DOI: 10.1212/wnl.0b013e3182a43b48.Peer-Reviewed Original ResearchConceptsCSF of patientsMultiple sclerosisNeurologic diseaseEpstein-Barr virus infectionImmunoglobulin GElevated immunoglobulin GInflammatory neurologic diseasesSubset of patientsLarger validation cohortRecombination signal binding proteinImmunoglobulin kappa J regionCSF autoantibodiesValidation cohortControl subjectsSerum reactivityAutoantigen candidatesHigh prevalenceVirus infectionPatientsAutoantibodiesCSFSclerosisArray-based profilingDiseaseELISA