通过直接结合激活TLR9信号,以及其在CD4+T细胞中的功能后果
Ravi Kumar Sharma1,2, Jyoti Sharma1, Rajendra Kumar3
1Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
Scandinavian journal of immunology
|July 5, 2023
概括
CpG寡度氧核酸 (ODN) 直接与CD4+T细胞中的托尔类受体9 (TLR9) 相互作用,诱导一种抗炎性表型. 这种TLR9信号通路,独立于MyD88,产生抑制免疫反应的调节性T细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 已知CpG寡度氧核化物 (ODN) 是已知的托尔类受体9 (TLR9) 连接体.
- 以前的研究表明CD4+ T细胞对ODN的反应是独立于TLR9和MyD88.
研究的目的:
- 研究ODN 2216和TLR9在人类CD4+T细胞中的相互作用.
- 评估这种相互作用对TLR9信号传递和CD4+T细胞表型的影响.
主要方法:
- 在人类CD4+T细胞中研究了ODN 2216和TLR9的配体受体相互作用.
- 评估了TLR9信号传递,MyD88独立性,TGF-β表达和细胞表型.
- 评估了ODN 2216治疗的CD4+ T细胞的抑制能力.
主要成果:
- 通过反,ODN 2216的吸收受TLR9的控制,并通过反增强TLR9信号分子.
- ODN 2216诱导了TLR9依赖的,MyD88独立的TGF-β表达的增加.
- 接受ODN 2216治疗的CD4+ T细胞表现出一种抗炎,Th3类调节性表型.
- 这些Th3类细胞抑制未经处理的CD4+T细胞的增殖.
结论:
- 在CD4+ T细胞中ODN 2216吸收和TLR9信号之间存在直接的,相互依赖的关系.
- 这项研究揭示了利用先天性免疫连接体调节适应性免疫的新机制.
- 这些发现支持探索直接免疫细胞调节以控制夸张的炎症反应.
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