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雷弗1链接Ripk1RNA拼接到卡斯帕-8介导的热细胞死亡,炎症和病原体耐药性
Boyao Zhang1, Pontus Orning1,2, Jesse W Lehman3
1Division of Infectious Diseases and Immunology, Department of Medicine, Program in Innate Immunity, University of Massachusetts Chan Medical School, Worcester, MA 01605.
概括
雷弗1调节受体相互作用的氨酸/氨酸激酶1 (RIPK1) 拼接,影响炎症细胞死亡. 在老鼠中,Raver1缺乏增加了通过改变免疫信号的细菌感染的易感性.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞死亡途径 细胞死亡途径
背景情况:
- 受体相互作用的氨酸/氨酸激酶1 (RIPK1) 和caspase-8是细胞死亡和炎症的关键调节者.
- RIPK1和caspase-8的失调有助于各种炎症性疾病.
研究的目的:
- 研究Raver1在调节RIPK1拼接中的作用及其对炎症细胞死亡的影响.
- 阐明Raver1在先天免疫反应中的功能.
主要方法:
- 在Raver1缺陷巨细胞中对Ripk1前mRNA剪接的分析.
- 评估细胞死亡,细胞因子生产 (IL-18,IL-1ß) 和免疫信号通路激活 (caspase-8,Gasdermin D/E,caspase-1) 作为对各种刺激的反应.
- 在缺乏Raver1的小鼠中评估Yersinia感染易感性.
主要成果:
- 雷弗1缺乏改变Ripk1前mRNA拼接,导致炎症细胞死亡减少,并减少巨细胞中细胞因子的产生.
- 缺乏Raver1的巨细胞表现出caspase-8,Gasdermin D/E和caspase-1的激活减少.
- 缺乏Raver1的小鼠对Yersinia感染的敏感性增加.
- 拉维尔1和RIPK1影响了C型莱克受体Mincle的表达和功能.
结论:
- Raver1是Ripk1拼接的关键调节者,在控制酶-8依赖性炎症细胞死亡方面发挥着关键作用.
- 雷弗1调节先天免疫反应,在指导体外和体内炎症过程方面具有重要作用.
- 向Raver1可能为炎症和感染提供治疗策略.
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