通过全基因组测序来识别针对B血清组脑膜炎球菌的候选疫苗
M Pizza1, V Scarlato, V Masignani
1IRIS, Chiron S.p.A., Via Fiorentina 1, 53100 Siena, Italy.
概括
由于蛋白质的变异,开发针对Neisseria meningitidis (细菌性脑膜炎) 的疫苗具有挑战性. 这项研究确定了产生杀菌抗体的保存表面蛋白,提供了有前途的疫苗候选人.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 脑膜炎Neisseria meningitidis会导致严重的细菌感染,如脑膜炎和败血症.
- 现有的疫苗开发受到表面蛋白质变异性和多糖交叉反应性的阻碍.
研究的目的:
- 为了确定新型疫苗候选人对于内炎菌 B 血清组.
- 克服抗原变异和宿主交叉反应性所带来的挑战.
主要方法:
- 一个毒性Neisseria meningitidis血清组B菌株 (MC58) 的全基因组测序.
- 在大肠杆菌中表达和净化350个候选抗原.
- 用候选抗原对小鼠进行免疫接种,并分析生成的血清.
主要成果:
- 在Neisseria meningitidis菌株中保存的表面暴露蛋白质的识别.
- 检测诱导针对细菌的杀菌反应的抗体.
- 杀菌抗体反应与疫苗潜在疗效的相关性.
结论:
- 基于基因组的抗原发现是Neisseria meningitidis疫苗开发的可行策略.
- 保存,表面暴露的蛋白质产生杀菌抗体是有效疫苗的关键目标.
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