在实验性炎症性肠病中,TL1A/DR3信号调节了致病性Th9细胞的生成
bioRxiv : the preprint server for biology
|February 26, 2024
概括
功能性死亡受体3 (DR3) 信号传递对于克罗恩病实验模型中的Th9细胞的致病性至关重要. 阻止这种途径可能为炎症性肠病提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 瘤缩因子,如干1A (TL1A) 和死亡受体3 (DR3) 信号,调节炎性肠病 (IBD) 中的T细胞平衡.
- 释放Th9细胞的介质素-9 (IL-9) 细胞与性结肠炎 (UC) 病原发生有关,但它们在克罗恩病 (CD) 中的作用尚不清楚.
研究的目的:
- 为了研究DR3信号在Th9细胞分化和功能中的作用,在CD类结肠炎和大肠炎的小鼠模型中.
- 为了阐明基底的分子机制 Th9细胞介导的肠道炎症在CD.
主要方法:
- 使用了CD类结肠炎和大肠炎的小鼠模型,包括SAMP1/YitFc (SAMP) 小鼠.
- 产生了DR3缺乏的Th9细胞 (Th9KO),并将它们与野生类型的Th9细胞 (Th9WT) 相比较.
- 进行RNA测序和蛋白质组分析,以及T细胞采用转移实验.
主要成果:
- 与DR3缺乏的Th9细胞 (Th9KO) 相比,Th9WT细胞表现出一种促炎特征.
- 移除DR3信号导致抗炎反应,增加IL-10产生细胞.
- 炎症通路在Th9WT中比Th9KO细胞更活跃;Th9KO细胞具有较少的胆固醇性,IL-9阻塞减少了肠道炎症.
结论:
- 功能DR3受体是需要的Th9细胞致病性在实验性CD类脑膜炎.
- TL1A/DR3/Th9促炎途径代表了CD病变发生的一个新机制.
- 针对TL1A/DR3/Th9通路可能为CD患者提供新的治疗策略.
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