触发内源Z-RNA传感器通过ZBP1-依赖性亡来进行抗瘤治疗
Tao Yang1, Guodong Wang1, Mingxiang Zhang2
1CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
Cell reports
|November 3, 2023
概括
氧化应激诱导宿主细胞中Z-RNA的形成,Z-RNA结合蛋白1 (ZBP1) 在应激颗粒中感知到这种Z-RNA结合蛋白1 (ZBP1),从而引发亡. 这种机制通过促进抗瘤细胞死亡来增强化疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- Z-RNA结合蛋白1 (ZBP1) 识别Z-RNAs以诱导死细胞死亡,这对于抗病毒防御至关重要.
- ZBP1还与宿主衍生的Z-RNA相互作用,表明它在器官发育和炎症中的作用,但它们的形成和感知机制尚不清楚.
研究的目的:
- 研究宿主细胞衍生Z-RNAs的形成和感知机制.
- 探索氧化应激在内源Z-RNA产生和ZBP1激活中的作用.
- 为了确定ZBP1介导的亡在癌症治疗中的治疗潜力.
主要方法:
- 在细胞培养和瘤模型中诱导氧化应激.
- 使用分子生物学技术分析Z-RNA的形成和定位.
- 评估ZBP1的激活和死亡的诱导.
- 在氧化应激诱导的Z-RNAs存在时,对化疗疗效能的评估.
主要成果:
- 氧化应激强烈诱导宿主细胞内内源性Z-RNAs的形成.
- 这些Z-RNAs定位到应力颗粒,由ZBP1.1直接感知到它们.
- 由Z-RNAs激活ZBP1会触发死细胞死亡,特别是在瘤细胞中.
- 氧化应激诱导的Z-RNAs通过ZBP1-介导的亡来增强瘤化疗结果.
结论:
- 氧化应激是内源Z-RNA生物发生的关键调节者.
- 在压力颗粒中,ZBP1直接感知到Z-RNA,从而启动亡.
- 向氧化应激诱导的Z-RNAs和ZBP1激活是一种增强抗瘤免疫力和化疗的有希望的策略.
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