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在疫苗候选人对细胞内病原体的保护性反应中受训的先天免疫力
Jefferson B S Oliveira1, Laice A Silva1, Monique F S Sousa2
1Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
Vaccines
|February 26, 2026
概括
训练有素的先天性免疫能增强了针对Brucella ovis和Listeria monocytogenes的非活化疫苗. 然而,它可能会降低活体减弱布鲁塞拉疫苗的有效性,表明复杂的免疫相互作用.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 疫苗学 疫苗学 疫苗学
背景情况:
- 训练有素的先天免疫能增强了免疫细胞对病原体的反应能力.
- 像β-葡萄糖这样的刺激可以诱导训练有素的免疫力,以改善防御.
- 了解训练免疫力是开发新型感染控制策略的关键.
研究的目的:
- 调查是否训练有素的先天免疫能提高疫苗对布鲁塞拉和李斯特菌单细胞菌的有效性.
- 评估β-葡萄糖和齐莫桑对疫苗模型的影响.
- 评估对抗细菌感染的保护作用.
主要方法:
- 在体内诱导受过训练的先天免疫力,使用β-葡萄糖或zymosan.
- 用弱化或无活化的Brucella ovis和Listeria monocytogenes配方疫苗接种.
- 挑战目标病原体和评估疫苗诱导的保护和免疫反应.
主要成果:
- 与zymosan相比,β-葡萄糖在体外和体内显著减少了细菌感染.
- 贝塔-葡萄糖增强了无活化Brucella ovis疫苗的保护,但没有减弱的疫苗.
- 贝塔葡萄糖没有提高Listeria monocytogenes疫苗的疗效,尽管一些训练过的小鼠没有显示可检测的细菌.
结论:
- 训练有素的先天免疫能提高了对布鲁塞拉和Listeria monocytogenes的非活化疫苗的保护效果.
- 活体减弱布鲁塞拉艾维斯疫苗的疗效受到受训练天生的免疫力不利的影响.
- 通过增加β-葡萄糖剂量的过度刺激可能会损害感染控制,突显剂量依赖性.
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