Multivalent immunogenic molecules comprise a carrier molecule containing at least one functional T-cell epitope and multiple different carbohydrate fragments each linker to the carrier molecule and each containing at least one functional B-cell epitope. The carrier molecule inputs enhanced immunogenicity to the multiple carbohydrate fragments. The carbohydrate fragments may be capsular oligosaccharide fragments from
Streptococcus pneumoniae
, which may be serotypes 1, 4, 5, 6B, 9V, 14, 18C, 19F or 23F, or
Neisseria meningitidis
, which may be serotype A, B, C, W-135 or Y. Such oligosaccharide fragments may be sized from 2 to 5 kDa. Alternatively, the carbohydrate fragments may be fragments of carbohydrate-based tumor antigens, such as Globo H, Le
Y
or STn. The multivalent molecules may be produced by random conjugation or site-directed conjugation of the carbohydrate fragments to the carrier molecule. The multivalent molecules may be employed in vaccines or in the generation of antibodies for diagnostic application.
多价免疫原分子包括一个含有至少一个功能性 T 细胞表位的载体分子和多个不同的
碳水化合物片段,每个片段都与载体分子连接,且每个片段都含有至少一个功能性 B 细胞表位。载体分子为多个
碳水化合物片段输入增强的免疫原性。
碳水化合物片段可以是来自于
肺炎链球菌
可以是血清型 1、4、5、6B、9V、14、18C、19F 或 23F 的肺炎链球菌,或
脑膜炎奈瑟菌
这些
寡糖片段的大小可为 2 至 5 kDa。或者,
碳水化合物片段可以是基于
碳水化合物的肿瘤抗原片段,如 Globo H、Le
Y
或 STn。多价分子可通过
碳水化合物片段与载体分子的随机共轭或定点共轭产生。多价分子可用于疫苗或产生用于诊断的
抗体。