RORγt-Raftlin1复合体调节Th17细胞的致病性和结肠炎症的发生
Amir Kumar Singh1,2,3, Ritesh Kumar1,2,3, Jianyi Yin1
1Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, 75390, USA.
Nature communications
|August 17, 2023
概括
在致病性T辅助细胞17 (Th17) 中使用RORγt的Raftlin1蛋白复合体,驱动炎症. 破坏这个复合体会减少致病的Th17细胞,为炎症性疾病提供治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 产生中白素-17 (IL-17) 的T助手17 (Th17) 细胞与炎症性疾病有关,但也保持肠道屏障的完整性.
- 控制Th17细胞功能多样性和病原性的精确细胞内机制尚不完全理解.
研究的目的:
- 阐明调节Th17细胞致病性的细胞内机制.
- 在Th17介导的炎症状况中确定治疗干预的新型分子标.
主要方法:
- 研究了脂质蛋白Raftlin1在Th17细胞功能中的作用.
- 利用共免疫沉来评估Raftlin1和RORγt之间的复杂形成.
- 在体内使用Citrobacter rodentium和细分丝状细菌模型检查了RORγt-Raftlin1复合物干扰对Th17细胞反应的影响.
主要成果:
- 拉夫特林1在致病的Th17细胞中特别上调并与RORγt形成复合体.
- 在Citrobacter rodentium感染期间,RORγt-Raftlin1复合体的破坏显著减少了致病性Th17细胞.
- 这种干扰对非致病的Th17细胞没有明显的影响,这些细胞对共生细分丝状细菌做出反应.
- 从机制上来说,Raftlin1被证明可以将特定的脂招募到RORγt中,从而促进Th17细胞的致病性.
结论:
- 拉夫特林1是致病性Th17细胞功能的关键调节者,通过与RORγt.形成复合体.
- RORγt-Raftlin1复合体代表了一个关键的机制,驱动Th17细胞的致病性.
- 准RORγt-Raftlin1相互作用为管理Th17驱动的炎症性疾病提供了潜在的治疗策略.
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