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由串联合成的5型和24型链球菌M蛋白的杂交肽拷贝诱发的调理素抗体。

Opsonic antibodies evoked by hybrid peptide copies of types 5 and 24 streptococcal M proteins synthesized in tandem.

作者信息

Beachey E H, Gras-Masse H, Tarter A, Jolivet M, Audibert F, Chedid L, Seyer J M

出版信息

J Exp Med. 1986 Jun 1;163(6):1451-8. doi: 10.1084/jem.163.6.1451.

Abstract

The protective immunogenicity of a hybrid peptide containing tandem copies of types 5 and 24 epitopes was investigated. Carboxy-terminal peptides of the cyanogen bromide-derived fragment 7 (CB7) of type 24 M protein were chemically synthesized, and then extended to include the first 20 residues of the amino-terminus of type 5 M protein. When emulsified in CFA and injected into rabbits without conjugation to a carrier, each of the synthetic hybrid peptides, designated S-M5(1-20)-S-CB7(23-35)C and S-M5(1-20)-S-CB(19-34), evoked opsonic antibodies against both types 5 and 24 streptococci without raising heart tissue-crossreactive immunity. These results suggest that tandem hybrid peptides may provide a new approach to the development of multivalent vaccines, not only to different serotypes of group A streptococci but perhaps also to a variety of other infectious agents.

摘要

研究了含有5型和24型表位串联拷贝的杂合肽的保护性免疫原性。化学合成了24型M蛋白的溴化氰衍生片段7(CB7)的羧基末端肽,然后进行延伸,使其包含5型M蛋白氨基末端的前20个残基。当在弗氏完全佐剂中乳化并注射到未与载体偶联的兔体内时,每种合成杂合肽,即S-M5(1-20)-S-CB7(23-35)C和S-M5(1-20)-S-CB(19-34),均可诱导产生针对5型和24型链球菌的调理素抗体,且不会引发心脏组织交叉反应性免疫。这些结果表明,串联杂合肽可能为开发多价疫苗提供一种新方法,不仅可用于A组链球菌的不同血清型,或许还可用于多种其他感染因子。

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