抗原驱动的T细胞-巨细胞相互作用调解了histidyl-tRNA合成酶诱导的神经炎的先天性和适应性免疫之间的接口
Daniel P Reay1, Tracy Tabib1, Ying Wang2
1Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Frontiers in immunology
|October 9, 2023
概括
异形性炎症性肌肉病 (IIM) 涉及复杂的免疫细胞相互作用. 在这种自身免疫性疾病中,T细胞和巨细胞对于驱动肌肉炎症至关重要,需要特定的信号通路来激活.
科学领域:
- 免疫学 免疫学 免疫学
- 自免疫性疾病 自免疫性疾病
- 肌肉生物学 肌肉生物学
背景情况:
- 异形性炎症性肌肉病变 (IIM) 是一种影响肌肉和其他器官的系统性自身免疫性疾病.
- 天生和适应性免疫路径都与IIM的病原发生有关.
- 了解IIM中的细胞信号网络对于开发向疗法至关重要.
研究的目的:
- 在IIM中定义交互式信号网络.
- 鉴定肌肉入细胞的细胞表型和转录基因概况,用于表-tRNA合成酶 (HRS) 诱导肌肉炎的小鼠模型.
主要方法:
- 在野生型和转基因小鼠 (C57BL/6菌株) 中诱导肌肉炎.
- 利用了他的病理学,免疫组织化学,流动细胞计和转录学.
- 采用单细胞RNA测序来详细分析肌肉透亚群.
主要成果:
- T细胞对于驱动HRS诱导的肌肉炎至关重要,RAG1 KO小鼠的炎症减少表明了这一点.
- 在T细胞中,先天性 (MyD88) 和适应性 (TCR) 免疫信号都起着至关重要的作用.
- 巨/骨髓细胞群对于支持T细胞透很重要.
- 对T细胞信号的改变会影响巨细胞,纤维细胞和其他非淋巴细胞的表型和分布.
结论:
- 由HRS引起的肌肉炎涉及多种细胞类型的复杂相互作用.
- 一个TH1主导的,亲炎性组织表型是由这些相互作用驱动的.
- 需要对MyD88和TCR依赖的T细胞信号通路进行抗原介导的激活.
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