2023
Age-dependent impairment in antibody responses elicited by a homologous CoronaVac booster dose
Filardi B, Monteiro V, Schwartzmann P, do Prado Martins V, Zucca L, Baiocchi G, Malik A, Silva J, Hahn A, Chen N, Pham K, Pérez-Then E, Miric M, Brache V, Cochon L, Larocca R, Della Rosa Mendez R, Silveira D, Pinto A, Croda J, Yildirim I, Omer S, Ko A, Vermund S, Grubaugh N, Iwasaki A, Lucas C, Initiative Y, Vogels C, Breban M, Koch T, Chaguza C, Tikhonova I, Castaldi C, Mane S, De Kumar B, Ferguson D, Kerantzas N, Peaper D, Landry M, Schulz W. Age-dependent impairment in antibody responses elicited by a homologous CoronaVac booster dose. Science Translational Medicine 2023, 15: eade6023. PMID: 36791210, DOI: 10.1126/scitranslmed.ade6023.Peer-Reviewed Original ResearchMeSH KeywordsAgedAntibodies, ViralAntibody FormationBNT162 VaccineCOVID-19HumansImmunoglobulin GSARS-CoV-2ConceptsBooster doseAntibody responseNeutralization titersVirus-specific IgG titersOlder adultsAntiviral humoral immunityPlasma antibody responsesHigh-risk populationSARS-CoV-2 spikeYears of ageAge-dependent impairmentHeterologous regimensBooster dosesBooster vaccineCoronaVac vaccineIgG titersProtective immunityHumoral immunityHumoral responseCoronaVacOmicron waveBooster strategyAge groupsEarly controlVaccine
2022
High-affinity, neutralizing antibodies to SARS-CoV-2 can be made without T follicular helper cells
Chen JS, Chow RD, Song E, Mao T, Israelow B, Kamath K, Bozekowski J, Haynes WA, Filler RB, Menasche BL, Wei J, Alfajaro MM, Song W, Peng L, Carter L, Weinstein JS, Gowthaman U, Chen S, Craft J, Shon JC, Iwasaki A, Wilen CB, Eisenbarth SC. High-affinity, neutralizing antibodies to SARS-CoV-2 can be made without T follicular helper cells. Science Immunology 2022, 7: eabl5652. PMID: 34914544, PMCID: PMC8977051, DOI: 10.1126/sciimmunol.abl5652.Peer-Reviewed Original ResearchConceptsSARS-CoV-2 infectionSARS-CoV-2Follicular helper cellsB cell responsesHelper cellsAntibody productionCell responsesSARS-CoV-2 vaccinationB-cell receptor sequencingSevere COVID-19Cell receptor sequencingIndependent antibodiesT cell-B cell interactionsViral inflammationAntiviral antibodiesImmunoglobulin class switchingVirus infectionGerminal centersViral infectionClonal repertoireInfectionAntibodiesClass switchingCOVID-19Patients
2019
Migrant memory B cells secrete luminal antibody in the vagina
Oh JE, Iijima N, Song E, Lu P, Klein J, Jiang R, Kleinstein SH, Iwasaki A. Migrant memory B cells secrete luminal antibody in the vagina. Nature 2019, 571: 122-126. PMID: 31189952, PMCID: PMC6609483, DOI: 10.1038/s41586-019-1285-1.Peer-Reviewed Original ResearchConceptsMemory B cellsFemale reproductive tractB cellsPlasma cellsReproductive tractCD4 tissue-resident memory T cellsTissue-resident memory T cellsLower female reproductive tractHerpes simplex virus 2Genital herpes infectionMemory T cellsExpression of chemokinesSimplex virus 2CXCR3-dependent mannerLocal plasma cellsLuminal antibodyMucosal antibodiesHerpes infectionPrimary infectionMucosal barrierSecondary challengeVariety of pathogensT cellsLamina propriaInducible source
2009
Inflammasome recognition of influenza virus is essential for adaptive immune responses
Ichinohe T, Lee HK, Ogura Y, Flavell R, Iwasaki A. Inflammasome recognition of influenza virus is essential for adaptive immune responses. Journal Of Experimental Medicine 2009, 206: 79-87. PMID: 19139171, PMCID: PMC2626661, DOI: 10.1084/jem.20081667.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibody FormationApoptosis Regulatory ProteinsCalcium-Binding ProteinsCARD Signaling Adaptor ProteinsCarrier ProteinsCaspase 1CD4-Positive T-LymphocytesCD8-Positive T-LymphocytesCell MovementCytoskeletal ProteinsDendritic CellsImmunity, CellularImmunity, InnateImmunoglobulin IsotypesInterleukin-1betaLungMacrophages, AlveolarMiceMice, Inbred C57BLMice, KnockoutMultiprotein ComplexesNasal Lavage FluidNLR Family, Pyrin Domain-Containing 3 ProteinOrthomyxoviridaeOrthomyxoviridae InfectionsReceptors, Interleukin-1Survival AnalysisConceptsInfluenza virus infectionNOD-like receptorsInfluenza virusVirus infectionAdaptive immunityInflammasome activationRetinoic acid-inducible gene I.CD8 T cell responsesCaspase-1Influenza virus resultsMucosal IgA secretionProtective antiviral immunitySystemic IgG responseCD4 T cellsT cell responsesAdaptive immune responsesType I interferonInnate immune systemRespiratory infectionsIgG responsesProtective immunityTLR signalsIgA secretionReceptor 7T cells
2004
Toll-like receptor control of the adaptive immune responses
Iwasaki A, Medzhitov R. Toll-like receptor control of the adaptive immune responses. Nature Immunology 2004, 5: 987-995. PMID: 15454922, DOI: 10.1038/ni1112.Peer-Reviewed Original ResearchConceptsToll-like receptorsAdaptive immune responsesImmune responseMechanisms of TLRToll-like receptor controlHost defense responsesDendritic cell functionDendritic cell populationsMicrobial infectionsInnate immune systemDistinct anatomical locationsInflammatory reactionAdaptive immunityImmune systemAnatomical locationReceptor controlCell functionCell populationsMultiple mechanismsInfectionRecent studiesResponseInitiationSystemic defenseImportant clues