Apaf-1是一种进化保存的DNA传感器,可以在细胞亡和炎症之间切换细胞命运
Jie Ruan1, Xuxia Wei1, Suizhi Li1
1Guangdong Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, MOE Engineering Center of South China Sea Marine Biotechnology, Southern Laboratory of Ocean Science and Engineering (Zhuhai), State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China.
Cell discovery
|January 20, 2025
概括
核突蛋白酶激活因子1 (Apaf-1) 是一个保存的DNA传感器. 它启动炎症或亡,在检测细胞质DNA时作为细胞命运检查点.
科学领域:
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 光蛋白酶激活因子1 (Apaf-1) 传统上作为光蛋白形成的支架蛋白.
- 阿帕夫-1与先天性免疫受体的结构相似性表明,它可能在免疫系统中发挥作用,这在很大程度上仍未被探索.
研究的目的:
- 为了研究跨物种的Apaf-1-类分子的保存的DNA传感功能.
- 阐明Apaf-1在DNA识别后调解炎症反应的机制.
- 为了确定Apaf-1是否作为细胞命运检查点在细胞亡和炎症之间.
主要方法:
- 对来自不同物种 (,果,老鼠,人类) 的APAF-1类分子进行比较分析.
- 使用其WD40重复域研究哺乳动物Apaf-1和受体相互作用蛋白2 (RIP2) 之间的相互作用.
- 在细胞质DNA识别后评估Apaf-1在NF-κB驱动炎症中的作用.
主要成果:
- 多种物种的APAF-1类分子表现出保留的DNA传感能力.
- 哺乳动物Apaf-1招募并促进RIP2的寡合化,在细胞质DNA检测后启动NF-κB驱动的炎症.
- Apaf-1的DNA结合活动决定了细胞的命运,在细胞亡和炎症之间切换.
结论:
- Apaf-1 作为一个进化保存的 DNA 传感器.
- Apaf-1 作为一个关键的细胞命运检查点,调节基于连接体结合的炎症和亡之间的平衡.
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