RIPK3-MLKL尸体信号放大了STING通路,并加剧了致命性败血症
Xufei Zhang1, Jie Wu2, Qinjie Liu3
1Research Institute of General Surgery, Jinling Hospital, School of Medicine, Southeast University, Nanjing, China.
Clinical and translational medicine
|July 21, 2023
概括
亡调节了干扰素基因 (STING) 途径的刺激器. 抑制RIPK3和MLKL会影响STING信号传递,这表明亡是STING驱动炎症疾病的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子机制的分子机制
背景情况:
- 干扰素基因刺激器 (STING) 途径是炎症疾病的关键调解者.
- 了解STING信号的调节对于开发有针对性的疗法至关重要.
研究的目的:
- 调查死细胞灭绝,特别是RIPK3和MLKL在调节STING信号传递中的作用.
- 阐明将亡与STING激活联系起来的分子机制.
主要方法:
- 在HT-29细胞中利用RIPK3淘汰来评估STING信号.
- 研究了MLKL抑制和缺乏对STING通路的影响.
- 研究了MLKL与STING的相互作用及其对下游信号组件如TBK1和IRF3.3的影响.
- 在DMXAA诱导的肠损伤和败血症模型中评估了治疗潜力.
主要成果:
- 抑制RIPK3和MLKL抑制了STING信号传递,这表明亡维持了STING激活.
- 通过增强STING自,RIPK3淘汰抑制了STING信号传递.
- MLKL表现出双向调节:缺陷增强了STING信号,而孔隙形成抑制则限制了它.
- 结合STING的MLKL细胞外分泌抑制了TBK1和IRF3的招募.
结论:
- 确立了死细胞灭绝和STING途径之间的分子联系.
- 向死细胞信号改善了炎症条件下的STING激活.
- 研究结果表明,亡抑制是STING驱动的炎症性疾病的潜在治疗策略.
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