2022
Unadjuvanted intranasal spike vaccine elicits protective mucosal immunity against sarbecoviruses
Mao T, Israelow B, Peña-Hernández MA, Suberi A, Zhou L, Luyten S, Reschke M, Dong H, Homer RJ, Saltzman WM, Iwasaki A. Unadjuvanted intranasal spike vaccine elicits protective mucosal immunity against sarbecoviruses. Science 2022, 378: eabo2523. PMID: 36302057, PMCID: PMC9798903, DOI: 10.1126/science.abo2523.Peer-Reviewed Original ResearchConceptsRespiratory mucosaSystemic immunityLethal SARS-CoV-2 infectionAcute respiratory syndrome coronavirus 2 pandemicSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemicSARS-CoV-2 infectionProtective mucosal immunityCross-reactive immunityT cell responsesCoronavirus 2 pandemicPrimary vaccinationParenteral vaccinesMucosal immunityVaccine strategiesRespiratory tractImmunoglobulin AMemory BImmune memoryPartial immunityCell responsesPoor immunityImmunitySpike proteinMucosaVaccine
2021
Intranasal priming induces local lung-resident B cell populations that secrete protective mucosal antiviral IgA
Oh JE, Song E, Moriyama M, Wong P, Zhang S, Jiang R, Strohmeier S, Kleinstein SH, Krammer F, Iwasaki A. Intranasal priming induces local lung-resident B cell populations that secrete protective mucosal antiviral IgA. Science Immunology 2021, 6: eabj5129. PMID: 34890255, PMCID: PMC8762609, DOI: 10.1126/sciimmunol.abj5129.Peer-Reviewed Original ResearchConceptsVirus infectionIgA secretionB cellsMucosal surfacesIgA-secreting B cellsIgA-expressing cellsRole of IgARespiratory virus infectionsIgA-secreting cellsLower respiratory tractInfluenza virus infectionEffective immune protectionHeterologous virus infectionMemory B cellsSecretory immunoglobulin AProtein-based vaccinesB cell populationsPredominant Ig isotypeSite of entryIntranasal primingBronchoalveolar spaceProtective immunityVaccine strategiesRespiratory mucosaImmune protection
2019
Low ambient humidity impairs barrier function and innate resistance against influenza infection
Kudo E, Song E, Yockey LJ, Rakib T, Wong PW, Homer RJ, Iwasaki A. Low ambient humidity impairs barrier function and innate resistance against influenza infection. Proceedings Of The National Academy Of Sciences Of The United States Of America 2019, 116: 10905-10910. PMID: 31085641, PMCID: PMC6561219, DOI: 10.1073/pnas.1902840116.Peer-Reviewed Original ResearchConceptsInfluenza infectionImpair barrier functionImpairs host defenseSeasonal influenza virusesInfluenza virus infectionLungs of miceImpairs mucociliary clearanceTissue repairInduction of IFNInnate antiviral defenseViral burdenMucociliary clearanceDisease outcomeRespiratory challengeVirus infectionSevere diseaseViral infectionCongenic miceHost responseViral transmissionHost defenseSingle-cell RNA sequencingInnate resistanceDisease pathologyInfluenza virus
2016
Exploiting Mucosal Immunity for Antiviral Vaccines
Iwasaki A. Exploiting Mucosal Immunity for Antiviral Vaccines. Annual Review Of Immunology 2016, 34: 575-608. PMID: 27168245, DOI: 10.1146/annurev-immunol-032414-112315.Peer-Reviewed Original ResearchConceptsMucosal immunityHuman immunodeficiency virusEffective immune protectionHost immune responseHerpes simplex virusImmunodeficiency virusMucosal vaccinesImmune protectionSuccessful vaccineImmune responseSimplex virusAntiviral vaccinesMucosal surfacesVaccine developmentVaccine designInfluenza virusFirst lineVaccineViral pathogensImmunityViral diseasesVirusDangerous pathogensPathogensDisease
2010
Antiviral immune responses in the genital tract: clues for vaccines
Iwasaki A. Antiviral immune responses in the genital tract: clues for vaccines. Nature Reviews Immunology 2010, 10: 699-711. PMID: 20829886, PMCID: PMC3678359, DOI: 10.1038/nri2836.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsFemaleGenitaliaHumansImmunity, MucosalIntestinal MucosaMaleSexually Transmitted Diseases, ViralViral VaccinesConceptsGenital mucosaT cellsGenital tractHerpes simplex virus type 2Simplex virus type 2Innate immune cellsT cell populationsAntiviral immune responseFemale genital tractPattern recognition receptorsVirus type 2Immune correlatesMemory CD4Memory CD8Viral clearanceHuman papillomavirusImmune cellsMemory lymphocytesSuccessful vaccineHIV-1Immune responseSevere diseaseVaginal epitheliumAdaptive immunityTarget cell type
2009
CD8+ T lymphocyte mobilization to virus-infected tissue requires CD4+ T-cell help
Nakanishi Y, Lu B, Gerard C, Iwasaki A. CD8+ T lymphocyte mobilization to virus-infected tissue requires CD4+ T-cell help. Nature 2009, 462: 510-513. PMID: 19898495, PMCID: PMC2789415, DOI: 10.1038/nature08511.Peer-Reviewed Original ResearchConceptsT cell helpT cellsRecruitment of CD8Activity of CD4T lymphocyte responsesT helper cellsSecretion of interferonLymphocyte mobilizationCD4 helpCTL responsesCytotoxic CD8Lymphocyte responsesMucosal sitesChemokine secretionHelper cellsVirus-infected tissuesViral infectionCD4CD8Intracellular pathogensSecretionUnrecognized aspectsCellsInterferonInfection
2007
Mucosal Dendritic Cells
Iwasaki A. Mucosal Dendritic Cells. Annual Review Of Immunology 2007, 25: 381-418. PMID: 17378762, DOI: 10.1146/annurev.immunol.25.022106.141634.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntigen PresentationDendritic CellsHomeostasisHumansImmunity, InnateImmunity, MucosalMucous MembraneConceptsMucosal dendritic cellsDendritic cellsMucosal surfacesSpecialized dendritic cellsRobust protective immunityAdaptive immune systemMucus-secreting cellsProtective immunityEnvironmental antigensMucosal barrierCommensal floraImmune systemEpithelial cellsRecognition of microorganismsAntigenAppropriate local responsesCellsVital functionsResponsePathogensAbsence of pathogensExcretionImmunity
2006
Cutting Edge: Plasmacytoid Dendritic Cells Provide Innate Immune Protection against Mucosal Viral Infection In Situ
Lund JM, Linehan MM, Iijima N, Iwasaki A. Cutting Edge: Plasmacytoid Dendritic Cells Provide Innate Immune Protection against Mucosal Viral Infection In Situ. The Journal Of Immunology 2006, 177: 7510-7514. PMID: 17114418, DOI: 10.4049/jimmunol.177.11.7510.Peer-Reviewed Original ResearchConceptsMucosal viral infectionsPlasmacytoid dendritic cellsPlasmacytoid DCsDendritic cellsViral infectionGenital HSV-2 infectionHSV-2 infectionLocal viral replicationAntiviral effector cellsInnate immune protectionTLR9-dependent mannerType I IFNsType I IFNPeripheral mucosaPowerful APCsTh1 immunityEffector cellsImmune protectionNaive lymphocytesAdaptive immunityI IFNsI IFNVaginal mucosaViral replicationInnate defenseDendritic cells at the host-pathogen interface
Colonna M, Pulendran B, Iwasaki A. Dendritic cells at the host-pathogen interface. Nature Immunology 2006, 7: 117-120. PMID: 16424884, DOI: 10.1038/ni0206-117.Peer-Reviewed Original Research
2005
Intestinal epithelial barrier and mucosal immunity
Sato A, Iwasaki A. Intestinal epithelial barrier and mucosal immunity. Cellular And Molecular Life Sciences 2005, 62: 1333. PMID: 15971108, DOI: 10.1007/s00018-005-5037-z.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDendritic CellsHumansImmune ToleranceImmunity, MucosalImmunoglobulin AIntestinal MucosaPeyer's PatchesT-LymphocytesConceptsDendritic cellsMucosal immunityPeyer's patchesMajor inductive siteMucosal dendritic cellsPP dendritic cellsResident dendritic cellsMucosal immune systemIntestinal epithelial barrierFood antigensInductive sitesGastrointestinal mucosaT cellsImmune inductionImmune responseRecent studiesEpithelial barrierImmune systemCommensal microbesSmall intestineA responsesInfectious pathogensImmunityAntigenInduction
2004
Involvement of Dendritic Cell Subsets in the Induction of Oral Tolerance and Immunity
FLEETON M, CONTRACTOR N, LEON F, HE J, WETZEL D, DERMODY T, IWASAKI A, KELSALL B. Involvement of Dendritic Cell Subsets in the Induction of Oral Tolerance and Immunity. Annals Of The New York Academy Of Sciences 2004, 1029: 60-65. PMID: 15681744, DOI: 10.1196/annals.1309.008.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDendritic CellsImmune ToleranceImmunity, MucosalMicePeyer's PatchesReoviridae InfectionsT-LymphocytesConceptsSubepithelial dome regionDendritic cellsApoptotic epithelial cellsDC maturationEpithelial cellsOral administrationT cellsImmune responsePP follicle-associated epitheliumSystemic antiviral immune responsesDendritic cell subsetsPlasmacytoid dendritic cellsCross-present antigensRegulatory T cellsInduction of immunityB cell responsesAntiviral immune responseActive viral infectionFollicle-associated epitheliumMurine Peyer's patchesDC infectionDC subsetsOral antigenDC populationsOral tolerance