在肠道上皮细胞中的ROS-NLRP3轴与自身免疫性尿道炎的发展有关
Lu Shi1, Sanhua Xu1, Yanhua Cheng1
1Ophthalmic Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Current eye research
|December 15, 2025
概括
肠道免疫失衡,特别是ROS-NLRP3轴,通过破坏Treg/Th17细胞平衡,加剧了脑膜炎. 抗氧化剂治疗显示出对这种致盲眼病的保护作用.
科学领域:
- 眼科医生 眼科 眼科
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 尿道炎是一种严重的,使人失明的眼睛疾病,其机制尚不清楚.
- 调节性T (Treg) 细胞和T辅助17 (Th17) 细胞之间的不平衡,受遗传学和环境的影响,是脑膜炎发展的核心.
- 肠道免疫失调在紫外线炎发病过程中的作用需要进一步研究.
研究的目的:
- 调查肠道免疫失衡加剧实验性自身免疫性脑膜炎 (EAU) 的假设.
- 为了阐明特定的分子途径参与肠道炎症在阿联期间.
主要方法:
- 使用IRBP1-20免疫接种建立了一个实验性自身免疫性脑膜炎 (EAU) 鼠标模型.
- 通过流式细胞计量分析了肠膜自身和淋巴结中的免疫细胞群 (CD4+ T细胞,树突细胞,Treg/Th17细胞).
- 通过使用FITC-dextran通透性和RT-PCR对紧结蛋白 (occludin,ZO-1) 来评估肠道屏障功能.
- 在肠道上皮细胞中使用ROS探针和西式涂抹量化反应性氧物种 (ROS) 和NLRP3炎症组分 (NLRP3,caspase-1,IL-1β).
- 评估了抗氧化剂治疗对EAU进展和肠道炎症的治疗潜力.
主要成果:
- 早期EAU阶段显示在肠膜内增加了CD4+T细胞,树突细胞和记忆CD4+T细胞.
- 肠上皮质屏障功能障碍显而易见,透性增加和奥克卢丁/ZO-1表达减少.
- 在EAU小鼠的肠表皮中检测到高ROS,NLRP3炎症酶激活 (NLRP3,caspase-1,IL-1β).
- 抗氧化剂的使用改善了EAU的严重性,并抑制了肠道ROS-NLRP3通路的激活.
结论:
- 肠道ROS-NLRP3信号轴在驱动紫外线炎的发病过程中起着至关重要的作用.
- 肠道屏障的破坏和随后的免疫细胞透有助于EAU.
- 准肠道ROS-NLRP3通路为乌维炎提供了一个潜在的治疗策略.
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