Universal room temperature stable influenza nanovaccine
通用型室温稳定流感纳米疫苗
基本信息
- 批准号:10320415
- 负责人:
- 金额:$ 109.03万
- 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
- 起止时间:2019-01-24 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:Animal ModelAnimalsAntibodiesAntibody titer measurementAntigensAppearanceAreaAvian Influenza A VirusB-LymphocytesCellular 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 DiseasePolyanhydridesPolymersProcessProductivityProtein FragmentProteinsPublic HealthRecombinantsRefrigerationSafetySerotypingSeverity of illnessStructure of mucous membrane of noseStructure of parenchyma of lungT cell responseT memory cellT-LymphocyteTechnologyTemperatureTissuesToxicologyTranslatingUnited StatesVaccinationVaccinesVariantViralViral AntigensViral Load resultViral ProteinsVirusVirus Diseasesbasecombatcopolymercost effectivecytotoxic CD8 T cellsdesigneconomic costimprovedinfluenza virus straininnovationmanufacturing processmortalitynanoparticlenanovaccineneutralizing antibodynovelpandemic diseaserespiratoryresponsestemuniversal vaccine
项目摘要
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.
项目总结/摘要
甲型流感病毒(IAV)是严重呼吸道疾病的主要原因,
该病毒导致大约20万人住院治疗,
在非流感大流行的年份,美国每年有36,000人死亡。
经济成本和最近出现的新的IAV毒株和/或变体,迫切需要
开发新型和有效的“通用”疫苗,以应对这一重大的全球公共卫生威胁。
IAV疫苗受到以下限制:需要考虑病毒抗原漂移/转移、缓慢的制造过程、低成本和低成本。
至中等的疗效率,以及不能诱导肺驻留记忆T和B细胞,这些细胞在
最有效的通用疫苗可能需要靶向IAV内的保守表位,
IAV血凝素(HA)的头部和茎部区域,包括驱动T
细胞免疫。免疫产生局部组织-驻留记忆T和B记忆细胞,
免疫提供了最大的保护,以防止未来的IAV遭遇。因此,我们的长期目标是开发一种
一种通用的IAV疫苗,它将诱导广泛中和抗体(bnAb)和持久的、IAV特异性的、肺免疫的抗体。
常驻T和B细胞免疫,保护免受组1和2 IAV毒株,并且不需要冷链。
最后,我们发现了一种新的基于马重组HA 3(rHA 3)的免疫原,
多个物种,并通过靶向HA头部和茎部区域来保护流感组。我们
他们还开发了两种有前途的聚合物纳米疫苗平台,
滴度,提高T细胞免疫力,延长疫苗接种后的抗原释放。
一种是可生物降解的聚酸酐纳米颗粒,另一种是基于五嵌段共聚物胶束。
结果表明,两种平台在接种疫苗后均诱导保护性免疫,病毒载量降低。
纳米疫苗在保护免受同源和异源IAV感染方面显示出有希望的功效,
诱导肺部的T和B细胞反应。该提案将利用我们团队的综合专业知识,
确定纳米疫苗方法是否能同时诱导bnAb和持久的肺内T和B细胞免疫
并使用以下具体目标导致普遍保护:1)合成和表征rHA 3
纳米疫苗; 102)在小鼠和雪貂中建立rHA 3纳米疫苗的安全性和毒理学特征; 103)
确定将引起对IAV的最适当和持续应答的rHA 3纳米疫苗制剂
在单剂量疫苗接种后; 104)设计多价rHA 3纳米疫苗,其增加bnAb和CMI,
IAV的不同菌株; 5)开发GLP-100合规工艺,用于合成已鉴定的通用铅
纳米疫苗,并评估其在输送装置中的保质期。
和决策点将导致最终产品,将符合NIAID的特征的保护性普遍
IAV疫苗,并提供重要的第一步,将我们的研究结果转化为人类临床试验。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Balaji Narasimhan其他文献
Balaji Narasimhan的其他文献
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{{ truncateString('Balaji Narasimhan', 18)}}的其他基金
Universal room temperature stable influenza nanovaccine
通用型室温稳定流感纳米疫苗
- 批准号:
10079019 - 财政年份:2019
- 资助金额:
$ 109.03万 - 项目类别:
Universal room temperature stable influenza nanovaccine
通用型室温稳定流感纳米疫苗
- 批准号:
10539285 - 财政年份:2019
- 资助金额:
$ 109.03万 - 项目类别:
Enhanced Shelf-life Nanovaccine Formulation for Immunity to Biodefense Pathogens
延长保质期的纳米疫苗配方,可增强对生物防御病原体的免疫力
- 批准号:
8694579 - 财政年份:2014
- 资助金额:
$ 109.03万 - 项目类别:
Enhanced Shelf-life Nanovaccine Formulation for Immunity to Biodefense Pathogens
延长保质期的纳米疫苗配方,可增强对生物防御病原体的免疫力
- 批准号:
9120299 - 财政年份:2014
- 资助金额:
$ 109.03万 - 项目类别:
Impact of polymer adjuvant chemistry on adaptive immune mechanisms
聚合物佐剂化学对适应性免疫机制的影响
- 批准号:
8132630 - 财政年份:2010
- 资助金额:
$ 109.03万 - 项目类别:
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