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针对Bilophila wadsworthia开发向性疫苗,以制结肠疾病:基于反向疫苗学和计算分析的多皮托普方法
Sara Khan1, Shahkaar Aziz1, Muhammad Waqas2
1Institute of Biotechnology and Genetic Engineering, The University of Agriculture, Peshawar 25130, Pakistan.
International journal of biological macromolecules
|July 28, 2023
概括
使用计算方法设计了一种针对Bilophila wadsworthia,一种与炎症性肠病和结肠直肠癌相关的细菌的新型多表位疫苗 (MEV). 这种疫苗有望降低有害的硫化物水平并预防相关疾病.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 生物信息学是一种生物信息学.
背景情况:
- 过度的硫化 (H2S) 生产细菌,特别是Bilophila wadsworthia,与受损的结肠粘液屏障,炎症性肠病 (IBD) 和结肠直肠癌 (CRC) 有关.
- 针对*B. wadsworthia*提供了一种潜在的策略,以减轻H2S的产量,并解决这些重大健康问题.
研究的目的:
- 通过反向疫苗学和免疫信息学来设计和计算验证一种针对*Bilophila wadsworthia*的仿真多层疫苗 (MEV).
- 预测和选择具有有利免疫特性的免疫原表位,并评估它们与人类和小鼠蛋白质组的交叉反应性.
主要方法:
- 使用减法蛋白质组分析,从B. wadsworthia*中识别出潜在的疫苗候选物 (PVC).
- 反向疫苗学和免疫信息学工具被用来预测B细胞和T细胞表位.
- 以皮托普与链接剂,PADRE,TAT和霍乱毒素B子单元辅助剂合并,以构建MEV.
- 在 silico 验证中包括三级结构建模,与 Toll 类受体 4 的分子对接以及免疫模拟.
主要成果:
- 确定了18种PVC,导致选择多个B细胞和T细胞表位.
- 设计的MEV与Toll-like受体4呈现稳定的结合,具有有利的物理化学性质,在大肠杆菌中具有高表达潜力.
- 体免疫模拟预测了强烈的B和T细胞反应,具有广泛的人口覆盖率 (∼98%) 和潜在的针对各种*B. wadsworthia*菌株的交叉保护.
结论:
- 经过计算设计的MEV代表了针对*Bilophila wadsworthia*和潜在地减轻IBD和CRC等H2S相关疾病的有希望的策略.
- 这项研究强调了逆向疫苗学和免疫信息学在开发新型疫苗候选人的有效性.
- 进一步的实验验证至关重要,以确认在临床前和临床环境中这种MEV的疗效和安全性.
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