B CELL EPITOPE DISCOVERY AND MECHANISMS OF ANTIBODY PROTECTION.

B 细胞表位发现和抗体保护机制。

• 批准号: 10688741
• 负责人: DONNA WILLIAMS
• 金额: $ 157.5万
• 依托单位: WASHINGTON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-06 至 2023-09-15
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10688741
• 关键词: Alphavirus; Antibodies; Antibody Response; Antibody-mediated protection; Antigen Targeting; Antigens; B-Lymphocyte Epitopes; Chikungunya virus; Complex; Computer software; Contractor; Contracts; Cryoelectron Microscopy; Data; Databases; Dengue Virus; Epitope Mapping; Epitopes; Evaluation; Flavivirus; Generations; Glycoproteins; Goals; Human; Immune; Immunization; In Vitro; Infection; Investigation; Mass Spectrum Analysis; Methods; Nonstructural Protein; Pathogenesis; Pathologic; Powassan virus; Production; Recombinant Proteins; Resources; Sampling; Support Contracts; System; Therapeutic; Validation; Venezuelan Equine Encephalitis Virus; Venezuelan Equine Encephalomyelitis; Viral; Virus; West Nile virus; X-Ray Crystallography; Zika Virus; arthropod-borne; base; human monoclonal antibodies; particle; pathogen; pathogenic virus; vaccine development

This contract supports the identification of human B cell epitopes derived from four viral pathogens; Dengue virus 4, Powassan virus, Chikungunya virus, and Venezuelan equine encephalitis virus, combined with basic studies to understand protective immunity mediated by antibodies, as well as pathological consequences of antibody responses. Milestones include 1) epitope identification; 2) epitope validation that must include in vitro evaluation using human samples; 3) submission of epitope data, computer software, and structural data to the Immune Epitope Database and Analysis Resource; and 4) studies to help understand the mechanisms of protection or pathogenesis elicited by antibodies associated with the newly identified epitopes. The primary goal of this contract is the delineation of B cell epitopes recognized by potently neutralizing or protective antibodies and evaluation of correlates of protection that can aid in the development of vaccines and therapeutics against select arthropod-transmitted viruses. The Contractor has chosen two flaviviruses (Dengue virus 4 and Powassan virus) and two alphaviruses (Chikungunya virus and Venezuelan equine encephalitis) for primary investigation of antibody responses to viral glycoprotein antigens. The Contractor will also evaluate protective antibodies that recognize the flavivirus nonstructural protein 1 (NS1) produced by West Nile and Zika viruses.

该合同支持鉴定来自四种病毒病原体的人B细胞表位；登革热病毒4型、波瓦桑病毒、基孔肯雅病毒和委内瑞拉马脑炎病毒，结合了解抗体介导的保护性免疫以及抗体反应的病理后果的基础研究。里程碑包括：1)表位鉴定；2)表位验证必须包括使用人类样本的体外评估；3)提交表位数据、计算机软件和结构数据到免疫表位数据库和分析资源；4)研究与新发现的表位相关的抗体引发的保护或发病机制。该合同的主要目标是描述被有效中和或保护性抗体识别的B细胞表位，并评估保护相关因素，有助于开发针对特定节肢动物传播病毒的疫苗和治疗方法。承包商选择了两种黄病毒（登革病毒4型和波瓦桑病毒）和两种甲病毒（基孔肯雅病毒和委内瑞拉马脑炎）进行病毒糖蛋白抗原抗体反应的初步调查。承包商还将评估识别西尼罗河病毒和寨卡病毒产生的黄病毒非结构蛋白1 （NS1）的保护性抗体。