吗啡通过TLR4和cGAS-STING信号通路诱导炎症反应
Fei Xie1, Yoshinori Kitagawa2, Hiroki Ogata2
1Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA; Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China; Harvard Medical School, Boston, MA, USA; Shriners Hospital for Children - Boston, Boston, MA, USA.
Cytokine
|September 1, 2024
概括
吗啡通过托尔类受体4 (TLR4) 和cGAS-STING通路在微质和巨细胞中触发免疫反应. 抑制STING可能会减少阿片类药物诱导的过敏症和耐受性.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 阿片类药物诱导的过敏症和耐受性与微质/巨细胞托尔类受体4 (TLR4) 激活和炎症性细胞因子释放有关.
- 由双链DNA触发的循环GMP-AMP合成/刺激干扰素基因 (cGAS-STING) 途径是炎症的另一个关键媒介.
研究的目的:
- 调查吗啡是否诱导微质和巨细胞的免疫炎症反应,涉及TLR4和cGAS-STING通路.
主要方法:
- 用吗啡和STING (C176) 或TLR4 (TAK242) 抑制剂治疗BV2微质和原始264.7巨细胞.
- 评估了TLR4,cGAS,STING,NF-κB和细胞因子的表达,使用了西方涂抹和RT-qPCR.
- 量化吗啡诱导的线粒体功能障碍,活性氧物种 (ROS) 和线粒体DNA (mtDNA) 释放.
- 研究了mtDNA在通过枯竭或转染引起的吗啡诱导炎症中的作用.
主要成果:
- 吗啡在两种细胞类型中增加了TLR4,cGAS,STING,NF-κB和促炎细胞因子 (IL-6,TNF-α) 的表达.
- 吗啡诱导了线粒体功能障碍,增加了ROS和mtDNA释放,以及类似M1的极化.
- 抑制TLR4和STING的抑制剂减少了吗啡诱导的细胞因子释放.
- mtDNA转染激活了炎症途径,而mtDNA枯竭逆转了这些影响.
结论:
- 吗啡激活巨细胞中的cGAS-STING通路,导致炎症.
- 抑制STING通路提供了一种潜在的策略,通过减少免疫细胞炎症来管理阿片类药物诱导的过敏症和耐受性.
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