通过光激活的TLR7/8激动剂刺激先天性免疫细胞
Keun Ah Ryu1, Lalisa Stutts, Janine K Tom
1Department of Chemistry, University of California , Irvine, California 92697, United States.
Journal of the American Chemical Society
|July 17, 2014
概括
研究人员开发了对托尔类受体 (TLRs) 的光控制激动剂 7/8. 这种新的工具允许精确控制先天免疫反应,使得针对性激活免疫细胞,如树突细胞,用于研究和治疗应用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 天生的免疫系统依赖托尔类受体 (TLRs) 进行病原体识别和免疫激活.
- 多个TLR之间的协同相互作用对于强烈的免疫反应至关重要,特别是在疫苗疗效方面.
- 由于缺乏精确的控制工具,对TLR信号的时空动态的理解是有限的.
研究的目的:
- 开发用于Toll类受体7和8 (TLR7/8) 的新型光控制激活剂.
- 为了能够对TLR介导的先天免疫反应进行精确的时空控制.
- 为了研究使用光诱导型TLR主激素激活免疫细胞和亚群的激活.
主要方法:
- 设计和合成用于TLR7/8的光控制激动剂,使用光敏感保护组.
- 在模型巨细胞系中证实光诱导的NF-κB产生.
- 评估原发性免疫细胞激活 (细胞因子和细胞表面标记物产生) 在骨髓衍生的树突细胞中.
- 对特定树突细胞亚群的光介导激活的证明.
主要成果:
- 照相控制的TLR7/8激动剂有效地抑制了TLR活性,直到暴露于光线.
- 暴露于光线触发了巨细胞中NF-κB的产生,证实了agonist的功能.
- 主要树突细胞显示依赖光的细胞因子释放和细胞表面标记物表达的改变.
- 在混合种群中的特定树突细胞亚群被选择性地使用光激活.
结论:
- 照相控制的TLR7/8激动剂为剖析先天免疫的时空方面提供了一个强大的新工具.
- 这项技术允许精确的,光可诱导的免疫细胞激活,为免疫学研究提供新的途径.
- 开发的激动剂在研究免疫细胞相互作用和开发向免疫疗法方面具有潜在的应用.
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