A novel convergent synthetic strategy for the construction of multicomponent self-adjuvanting lipopeptide vaccines was developed. A tetraalkyne-functionalized glucose derivative and lipidated Fmoc-lysine were prepared by novel efficient and convenient syntheses. The carbohydrate building block was coupled to the self-adjuvanting lipidic moiety (three lipidated Fmoc-lysines) on solid support. Four copies of a group A streptococcal B cell epitope (J8) were then conjugated to the glyco-lipopeptide using a copper-catalyzed cycloaddition reaction. The approach was elaborated by the preparation of a second vaccine candidate which incorporated an additional promiscuous T-helper epitope.
开发了一种新的汇聚合成策略,用于构建多成分自免疫脂肽疫苗。通过新的高效便捷的合成方法制备了四炔基功能
葡萄糖衍
生物和脂化Fmoc-赖
氨酸。将
碳水化合物构建块与自免疫脂质基团(三个脂化Fmoc-赖
氨酸)在固相支持上偶联。然后,使用
铜催化环加成反应将四个A型链球菌B细胞表位(J8)的拷贝连接到
糖脂肽上。该方法通过准备第二个疫苗候选者来详细说明,该候选者包含一个额外的杂交T细胞表位。