兰氏菌 (Lactobacillus rhamnosus) 通过增强粘膜免疫力和上皮屏障功能来保护对肠病原细菌的保护
Xuwen Gao1,2, Jiangfei Zhou1, Kai Yan1
1College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China.
拉科巴西勒斯 (Lactobacillus rhamnosus) CIQ249增强肠道屏障,并增强免疫反应,防止细菌感染. 这种益生菌通过改善身体防御和激活关键免疫细胞来增强肠道健康.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 益生菌为肠道感染提供了抗生素的替代品.
- 益生菌对病原体的作用机制需要进一步阐明.
- 乳酸菌拉姆诺索斯CIQ249正在研究其保护作用.
研究的目的:
- 阐明Lactobacillus rhamnosus CIQ249对肠病原性细菌感染的保护机制.
- 为了研究CIQ249对肠道物理屏障的影响.
- 通过CIQ249.9分析粘膜免疫反应的调节.
主要方法:
- 评估了小鼠的肠道殖民,生长表现和形态.
- 通过显微镜评估抗菌活性和病原体损害.
- 分析了紧结蛋白表达和免疫反应 (细胞因子,DCs,Tfh细胞,IgA).
- 对猪肠上皮细胞进行了转录基因分析.
主要成果:
- CIQ249增强了肠道殖民,生长和形态.
- 已证明具有抗微生物活性,并对沙门氏菌和大肠杆菌K99.9进行保护.
- 升级的紧结蛋白 (ZO-1,Claudin-1),加强了肠道屏障.
- 增强细胞因子的产生,树突细胞活化,Tfh细胞分化和IgA分泌.
- 转录组分析揭示了免疫和屏障通路的调节.
结论:
- CIQ249增强了上皮屏障,并激活了DC-Tfh-IgA免疫轴.
- 为使用CIQ249作为对肠道感染的微生态剂提供了机制基础.
- 强调CIQ249在增强身体和免疫防御方面的双重作用.
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