2024
PI3Kγ in B cells promotes antibody responses and generation of antibody-secreting cells
Lanahan S, Yang L, Jones K, Qi Z, Cabrera E, Cominsky L, Ramaswamy A, Barmada A, Gabernet G, Uthaya Kumar D, Xu L, Shan P, Wymann M, Kleinstein S, Rao V, Mustillo P, Romberg N, Abraham R, Lucas C. PI3Kγ in B cells promotes antibody responses and generation of antibody-secreting cells. Nature Immunology 2024, 25: 1422-1431. PMID: 38961274, DOI: 10.1038/s41590-024-01890-1.Peer-Reviewed Original ResearchAntibody-secreting cellsMemory B cellsB cellsKinase activity-dependent mannerDifferentiation of antibody-secreting cellsAntibody responseGeneration of antibody-secreting cellsInborn errors of immunityActivity-dependent mannerMouse immunization modelFate choiceT cell-dependent antigensToll-like receptor activationTranscriptional programsB cell biologyPhosphoinositide 3-kinase-gammaErrors of immunityNaive B cellsTransduce signalsActivated B cellsB lineage cellsRobust antibody responsesHumoral defectsHumoral immunityReceptor activation
2020
Human germinal centres engage memory and naive B cells after influenza vaccination
Turner JS, Zhou JQ, Han J, Schmitz AJ, Rizk AA, Alsoussi WB, Lei T, Amor M, McIntire KM, Meade P, Strohmeier S, Brent RI, Richey ST, Haile A, Yang YR, Klebert MK, Suessen T, Teefey S, Presti RM, Krammer F, Kleinstein SH, Ward AB, Ellebedy AH. Human germinal centres engage memory and naive B cells after influenza vaccination. Nature 2020, 586: 127-132. PMID: 32866963, PMCID: PMC7566073, DOI: 10.1038/s41586-020-2711-0.Peer-Reviewed Original ResearchConceptsB cell clonesInfluenza vaccinationGerminal center B cellsB cellsGerminal center reactionCell clonesLymph nodesMonoclonal antibodiesPre-existing memory B cellsGerminal center B cell responsesStrain-specific monoclonal antibodiesCenter reactionUltrasound-guided fine-needle aspirationMajor public health threatEarly plasmablast responsesInfluenza virus vaccinationSeasonal influenza vaccinationCross-reactive monoclonal antibodiesB cell responsesMemory B cellsB-cell originFine-needle aspirationNaive B cellsPublic health threatHuman germinal centre
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