2022
Impaired TIGIT expression on B cells drives circulating follicular helper T cell expansion in multiple sclerosis
Asashima H, Axisa PP, Pham THG, Longbrake EE, Ruff WE, Lele N, Cohen I, Raddassi K, Sumida TS, Hafler DA. Impaired TIGIT expression on B cells drives circulating follicular helper T cell expansion in multiple sclerosis. Journal Of Clinical Investigation 2022, 132: e156254. PMID: 36250467, PMCID: PMC9566906, DOI: 10.1172/jci156254.Peer-Reviewed Original ResearchConceptsRelapsing-remitting multiple sclerosisMemory B cellsCTfh cellsB cellsTIGIT expressionMultiple sclerosisT cellsFollicular helper T cellsHealthy age-matched controlsB-cell depletionT cell expansionHelper T cellsAge-matched controlsB cell functionB-cell pathwayDifferential gene expression signaturesTfh cellsDisease activityGene expression signaturesCell depletionCD40 ligandTranscription factor TCF4Disease pathogenesisImmune systemNew MRI
2017
Dimethyl fumarate induces changes in B- and T-lymphocyte function independent of the effects on absolute lymphocyte count
Longbrake EE, Cantoni C, Chahin S, Cignarella F, Cross AH, Piccio L. Dimethyl fumarate induces changes in B- and T-lymphocyte function independent of the effects on absolute lymphocyte count. Multiple Sclerosis Journal 2017, 24: 728-738. PMID: 28480794, PMCID: PMC5665729, DOI: 10.1177/1352458517707069.Peer-Reviewed Original ResearchConceptsAbsolute lymphocyte countDMF-treated patientsPeripheral blood mononuclear cellsDimethyl fumarateLymphocyte countPeptide stimulationLow absolute lymphocyte countFollicular T helper cellsDMF-induced lymphopeniaInvariant T (MAIT) cellsPro-inflammatory cytokinesT-cell phenotypeBlood mononuclear cellsT cell productionT helper cellsT lymphocyte functionMemory B cellsActivation-induced cell deathMultiparametric flow cytometryUntreated patientsMultiple sclerosisMononuclear cellsHealthy controlsT cellsT lymphocytes
2016
Effect of Multiple Sclerosis Disease-Modifying Therapies on B Cells and Humoral Immunity
Longbrake EE, Cross AH. Effect of Multiple Sclerosis Disease-Modifying Therapies on B Cells and Humoral Immunity. JAMA Neurology 2016, 73: 1-7. PMID: 26720195, DOI: 10.1001/jamaneurol.2015.3977.Peer-Reviewed Original ResearchConceptsDisease-modifying therapiesB cell immunityB cellsMultiple sclerosisAnti-inflammatory cytokine interleukin-10B-cell-depleting agentsMultiple Sclerosis Disease-Modifying TherapiesMost disease-modifying therapiesCytokine interleukin-10Memory B cellsB cell functionB-cell phenotypeB cell expressionB cell productionNaive B cellsMagnetic resonance imagingB cell precursorsClinical courseTherapeutic trialsInterleukin-10Proinflammatory cytokinesHumoral immunityClinical activityTherapeutic interventionsResonance imaging