Universal room temperature stable influenza nanovaccine
Universal room temperature stable influenza nanovaccine
批准号:
10539285
负责人:
Balaji Narasimhan
金额:
$96.52万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2019
资助国家:
美国
项目状态:
已结题
起止时间:
2019-01-24 至 2024-12-31
关键词:
1918 influenza pandemicAnimal ModelAnimalsAntibodiesAntibody titer measurementAntibody-mediated protectionAntigensAppearanceAreaAvian Influenza A VirusB-LymphocytesBindingCellular ImmunityCessation of lifeClinical TrialsCold ChainsDevice or Instrument DevelopmentDevicesDoseEconomicsEnsureEpidemicEpitopesEquus caballusFerretsFormulationFutureGoalsH5 hemagglutininHeadHemagglutininHospitalizationHumanHumoral ImmunitiesImmunityImmunizationInfectionInfluenzaInfluenza A Virus, H1N1 SubtypeInfluenza A Virus, H3N2 SubtypeInfluenza A Virus, H5N1 SubtypeInfluenza A virusLeadLegal patentLifeLungMaintenanceMedical Care CostsMembrane ProteinsMemoryMemory B-LymphocyteMicellesModelingMorbidity - disease rateMusNational Institute of Allergy and Infectious DiseasePolyanhydridesProcessProductivityProtein FragmentProteinsPublic HealthRecombinantsRefrigerationSafetySerotypingSeverity of illnessStructure of mucous membrane of noseT cell responseT-LymphocyteTechnologyTemperatureTissuesToxicologyTranslatingUnited StatesVaccinationVaccinesVariantViralViral AntigensViral Load resultViral ProteinsVirusVirus Diseasescombatcopolymercost effectivecytotoxic CD8 T cellsdesigneconomic costimprovedinfluenza virus straininnovationmanufacturing processmortalitynanoparticlenanopolymernanovaccineneutralizing antibodynovelpandemic diseasepandemic virusrespiratoryresponsestemtissue resident memory T celluniversal vaccinevaccine formulationvaccine platform
中文摘要
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英文摘要
PROJECT SUMMARY / ABSTRACT
Influenza A virus (IAV) is a major cause of serious respiratory illness and has been responsible for significant
morbidity and mortality in humans worldwide. The virus leads to approximately 200,000 hospitalizations and
36,000 deaths annually in the U.S. during non-pandemic years. Given the disease severity, the associated
economic costs and the recent appearance of novel IAV strains and/or variants, there is an urgent need to
develop novel and efficacious “universal” vaccines to combat this significant global public health threat. Current
IAV vaccines are limited by the need to account for viral antigen drift/shift, the slow manufacturing process, low
to moderate efficacy rates, and the inability to induce lung resident memory T and B cells that occur during
natural IAV infections. The most efficacious universal vaccine may need to target conserved epitopes within
both the head and the stem regions of the IAV hemagglutinin (HA) and include conserved proteins that drive T
cell immunity. Immunizations that generate local tissue-resident memory T and B memory cells and systemic
immunity offer the greatest protection against future IAV encounters. Thus, our long-term goal is to develop a
universal IAV vaccine that will induce broadly neutralizing antibodies (bnAb) and durable, IAV-specific, lung-
resident T and B cell immunity, protect against group 1 and 2 IAV strains, and not require a cold chain. To this
end, we have discovered a novel immunogen based on equine recombinant HA3 (rHA3) that elicits Ab in
multiple species and protects across influenza groups by targeting both the HA head and stem regions. We
have also developed two promising polymeric nanovaccine platforms that have been shown to increase Ab
titer, improve T cell immunity, and prolong antigen release after vaccination. One is comprised of
biodegradable polyanhydride nanoparticles and the other is based on pentablock copolymer micelles. We have
shown that both platforms induced protective immunity with reduced viral load upon vaccination. The IAV
nanovaccine showed promising efficacy in protection against homologous and heterologous IAV infections and
induced T and B cell responses in the lungs. This proposal will use the combined expertise of our team to
determine if a nanovaccine approach will induce both bnAb and durable, lung-resident T and B cell immunity
and lead to universal protection using the following specific aims: 1) synthesize and characterize rHA3
nanovaccines;; 2) establish the safety and toxicological profile of rHA3 nanovaccine in mice and ferrets;; 3)
determine rHA3 nanovaccine formulation(s) that will elicit the most appropriate and sustained response to IAV
following a single-dose vaccination;; 4) design multivalent rHA3 nanovaccines that increase bnAb and CMI to
diverse strains of IAV;; and 5) develop GLP-compliant process for synthesis of identified lead universal
nanovaccine and evaluate its shelf life in delivery devices. The proposed studies with tightly bound milestones
and decision points will lead to a final product that will meet NIAID’s characterization of a protective universal
IAV vaccine and provide important first steps for translating our findings to human clinical trials.
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Universal room temperature stable influenza nanovaccine
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批准号:10320415
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项目类别:
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资助金额:$109.03万
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财政年份:2019
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负责人:Balaji Narasimhan
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依托单位:
Universal room temperature stable influenza nanovaccine
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批准号:10079019
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项目类别:
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资助金额:$104.76万
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财政年份:2019
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负责人:Balaji Narasimhan
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批准号:8694579
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项目类别:
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资助金额:$35.0万
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财政年份:2014
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负责人:Balaji Narasimhan
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依托单位:
Enhanced Shelf-life Nanovaccine Formulation for Immunity to Biodefense Pathogens
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批准号:9120299
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项目类别:
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资助金额:$34.68万
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财政年份:2014
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负责人:Balaji Narasimhan
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依托单位:
Impact of polymer adjuvant chemistry on adaptive immune mechanisms
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批准号:8132630
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项目类别:
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资助金额:$53.74万
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财政年份:2010
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负责人:Balaji Narasimhan
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依托单位:
海外基金