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抗A组链球菌碳水化合物疫苗的合成及体内研究

Synthesis and in vivo studies of carbohydrate-based vaccines against group A streptococcus.

作者信息

Simerska Pavla, Abdel-Aal Abu-Baker M, Fujita Yoshio, Batzloff Michael R, Good Michael F, Toth Istvan

机构信息

School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St Lucia, Queensland 4072, Australia.

出版信息

Biopolymers. 2008;90(5):611-6. doi: 10.1002/bip.20992.

Abstract

Carbohydrates, as carriers, providing numerous attachment points for the conjugation of peptide antigens and their optimal orientation for the recognition by cells of the immune system, reducing degradation of the attached peptide antigens and many other advantages make carbohydrate-based vaccine highly promising approach. Multiple copies of a single group A streptococcal (GAS) M protein derived specific peptide antigens (J8 or J14) were coupled onto carbohydrate cores (D-glucose and D-galactose) linked to lipophilic amino acids to produce a self-adjuvanting liposaccharide vaccine against GAS strains. In vivo experiments showed high serum IgG antibody titers against each of the incorporated peptide epitopes, J8 or J14.

摘要

碳水化合物作为载体,为肽抗原的缀合提供了众多附着点,并使其以最佳方向被免疫系统的细胞识别,减少附着肽抗原的降解以及具有许多其他优势,使其成为基于碳水化合物的疫苗极具前景的方法。将单个A组链球菌(GAS)M蛋白衍生的特异性肽抗原(J8或J14)的多个拷贝偶联到与亲脂性氨基酸相连的碳水化合物核心(D-葡萄糖和D-半乳糖)上,以生产针对GAS菌株的自佐剂脂糖疫苗。体内实验显示针对每个掺入的肽表位J8或J14具有高血清IgG抗体滴度。

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