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 proteinMucosaVaccineOperation Nasal Vaccine—Lightning speed to counter COVID-19
Topol EJ, Iwasaki A. Operation Nasal Vaccine—Lightning speed to counter COVID-19. Science Immunology 2022, 7: eadd9947. PMID: 35862488, DOI: 10.1126/sciimmunol.add9947.Peer-Reviewed Original Research
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
2011
Microbiota regulates immune defense against respiratory tract influenza A virus infection
Ichinohe T, Pang IK, Kumamoto Y, Peaper DR, Ho JH, Murray TS, Iwasaki A. Microbiota regulates immune defense against respiratory tract influenza A virus infection. Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 5354-5359. PMID: 21402903, PMCID: PMC3069176, DOI: 10.1073/pnas.1019378108.Peer-Reviewed Original ResearchConceptsInfluenza virus infectionVirus infectionDendritic cellsImmune responseCommensal bacteriaRespiratory influenza virus infectionToll-like receptor ligandsVirus-specific CD4CD8 T cellsT cell primingCommensal microbiota compositionProductive immune responseExpression of mRNADistal injectionLymph nodesImmune impairmentIntact microbiotaIL-1βAntibody responseImmune homeostasisRespiratory mucosaAntibiotic treatmentT cellsInflammasome activationCommensal microbiota