通过酸盐封装进行后生物传递可通过调节肠道微生物群和SCFA介导的免疫信号来缓解DSS诱导的大肠炎
Qingqing Yu1, Jiaxuan Zhu1, Manchun Huang1
1School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
Food research international (Ottawa, Ont.)
|November 11, 2025
概括
封装的热失活的乳球植物菌植物体dy-1 (SHdy-1) 有效地治疗小鼠的大肠炎. 这种后生物制剂改善了肠道健康,减少了炎症,并调节了肠道微生物群,显示了炎症性肠病 (IBD) 治疗的前景.
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:
- 针对炎症性肠病 (IBD) 的益生菌疗法面临着低胃肠活力和不一致的疗效的挑战.
- 来自非活性的微生物或其代谢物的后生物质提供了更安全,更稳定的替代品,但它们的特定功能需要进一步阐明.
- 标准化的输送系统对于比较后生物制剂的不同功能至关重要.
研究的目的:
- 开发和评估一种双输送的藻酸盐封装系统,用于控制胃肠道释放活体 (Sdy-1) 和热不活化的 (SHdy-1) Lactiplantibacillus plantarum dy-1.
- 在小鼠模型中评估这些配方在减轻大肠炎症状方面的比较疗效.
- 研究这些配方对炎症,上皮质完整性,短链脂肪酸 (SCFA) 生产和肠道微生物群组成的影响.
主要方法:
- 开发一种藻酸盐封装系统,用于活体和非活化的细菌形式的双重输送.
- 使用大肠炎小鼠模型来评估封装配方的治疗效果.
- 对疾病活性,结肠长度,促炎性细胞因子水平 (TNF-α,IL-6,IL-1β),SCFA产生,SCFA相关受体表达和肠道微生物群组成 (α-多样性,特定属) 的分析.
主要成果:
- 活体和非活化配方都减轻了结肠炎症状,非活化形式 (SHdy-1) 显示出更高的疗效.
- SHdy-1显著降低了疾病活动,改善了结肠的长度,并抑制了关键的促炎细胞因子 (TNF-α,IL-6,IL-1β).
- SHdy-1增强了SCFA水平,特别是乳酪酸盐,上调了相关受体 (GPR41,GPR43,PPARγ),增加了肠道微生物α多样性,并促进了有益的细菌,同时减少了有害的细菌.
结论:
- 包装在酸盐中的后生菌,特别是热不活化的乳酸植物细菌 (SHdy-1),具有显著的抗结肠病作用.
- 这些效应通过调节免疫反应,通过SCFA增强宿主代谢,恢复健康的肠道微生物群来调节.
- 由于其稳定性和已证明的有效性,SHdy-1代表了治疗炎症性肠病的有前途的候选药物.
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