优化在早产婴儿衍生的肠上皮器官体内诱导炎症
Jonathan A Chapman1, Andrew M Frey2, Maria Emilia Dueñas2,3
1Newcastle University, Translational and Clinical Research Institute, Newcastle upon Tyne, UK.
Npj gut and liver
|February 5, 2026
概括
这项研究优化了使用早产婴儿肠道器官的炎症模型. 该模型有效模拟肠道炎症,有助于研究早产儿微生物群与宿主相互作用.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 发展生物学 发展生物学
背景情况:
- 过早出生的婴儿 (<32周怀孕) 呈现肠道微生物失调和炎症.
- 从早产婴儿衍生的肠道有机体 (PIOs) 为研究肠道微生物群与宿主相互作用提供了一个有前途的模型.
- 了解早产肠道的炎症反应对于改善婴儿健康结果至关重要.
研究的目的:
- 使用PIOs优化体外炎症模型.
- 为了研究宿主-微生物相互作用和早产肠道的炎症途径.
- 建立研究早产婴儿肠道炎症的框架.
主要方法:
- 开发了PIO单层的无氧共培系统,模仿肠道氧气梯度.
- 测试了各种炎症刺激,包括病原生物,脂多糖 (LPS) 和鞭毛菌.
- 优化刺激应用 (尖端LPS,底侧鞭) 和潜伏时间 (3小时) 以获得最大响应.
主要成果:
- 顶端LPS和底侧鞭毛素的组合诱导了PIOs的强烈炎症反应.
- 关键指标包括增强的促炎性细胞因子分泌和化学因子驱动的免疫细胞招募.
- 观察到TNFα和IL17C通路的激活,从NF-κB转向AP-1信号,以及组织重塑.
结论:
- 优化的PIO炎症模型为研究早产婴儿肠道炎症提供了可靠的平台.
- 这种模型有助于研究微生物组与宿主在健康和疾病中的复杂相互作用.
- 这些发现为未来关于早产婴儿肠道病理生理学和治疗干预措施的研究提供了框架.
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