设计,表达和免疫原性评估一种新型的多表位组合蛋白 (SOMP) 针对沙门氏菌 Typhimurium
Nima Rostami1, Elahe Tajbakhsh1, Shahram Nazarian2
1Department of Biology, ShK.C., Islamic Azad University, Shahrekord, Iran.
Journal of microbiological methods
|February 19, 2026
概括
使用免疫信息学开发了一种新的仿制疫苗SOMP,用于对抗多药耐药的沙门氏菌Typhimurium. 这种新型候选疫苗在小鼠中显示出显著的保护和生存,为抗生素耐药性细菌病原体提供了有前途的策略.
科学领域:
- 疫苗学 疫苗学 疫苗学
- 免疫学 免疫学 免疫学
- 细菌学 细菌学是一门学科.
背景情况:
- 耐多药沙门氏菌 (Salmonella enterica serovar Typhimurium) 构成了严重的公共卫生威胁.
- 迫切需要针对耐药细菌感染的有效疫苗.
研究的目的:
- 开发一种新型的多表位组合疫苗 (SOMP) 针对沙门氏菌 Typhimurium.
- 评估SOMP候选疫苗的免疫性和保护性疗效.
主要方法:
- 有理性的免疫信息学方法来设计一个嵌合式结构,集成保存的免疫源域 (OmpA,OmpC,OmpF,FliC).
- 在大肠杆菌中SOMP基因的Codon优化,合成和 prokaryotic表达.
- 重组蛋白的净化和用SOMP和Montanide ISA 720辅助剂免疫BALB/c小鼠.
- 对幽默免疫反应 (IgG标位) 和对致命的沙门氏菌Typhimurium挑战的保护功效的评估.
主要成果:
- 该SOMP结构表现出高抗原性和有利的物理化学性质.
- 免疫接种诱导了强大的IgG反应,具有高终点标位 (1:102,400).
- SOMP疫苗提供了显著的保护,在100 × LD50时达到70%的存活率,在1 × LD50时达到100%的存活率,而对照组则为0% (p < 0.0001).
结论:
- 这种SOMP木乃伊是一种高度免疫性和保护性疫苗候选人,可以对抗沙门氏菌Typhimurium.
- 计算设计和 prokaryotic 生产的综合管道为开发针对抗生素耐药细菌的子单位疫苗提供了一个可扩展的战略.
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相关概念视频
Cross-reactivity
Overview
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
