C9ORF72可以抑制JAK-STAT介导的炎症
1Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA.
iScience
|May 30, 2023
概括
失去C9ORF72会通过激活JAK-STAT通路和STING引起炎症. 雅克抑制剂可以治疗这些炎症反应在肌缩侧面硬化症和前叶退化.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 在C9ORF72中,六核酸重复扩张是肌缩侧面硬化症 (ALS) 和前叶退化症 (FTLD) 的主要遗传原因.
- 在小鼠中C9ORF72缺乏导致显著的炎症反应,但精确的调节机制尚未完全理解.
研究的目的:
- 阐明C9ORF72缺乏导致炎症的机制.
- 研究JAK-STAT通路和STING在C9ORF72相关炎症中的作用.
- 探索针对ALS/FTLD的JAK-STAT途径的潜在治疗策略.
主要方法:
- 研究了C9ORF72损失对JAK-STAT通路和细胞培养和小鼠模型中的STING蛋白水平的影响.
- 利用JAK抑制剂来评估它们在缓解炎症表型方面的有效性.
- 在C9ORF72缺陷的背景下检查了溶酶体完整性.
主要成果:
- 失去C9ORF72导致JAK-STAT通路的过度激活.
- 缺乏C9ORF72会增加STING蛋白水平,这是DNA感应免疫反应的关键调解者.
- 治疗JAK抑制剂有效地逆转了与C9ORF72缺乏相关的炎症表型.
- 切除C9ORF72损害了溶酶体的完整性,可能导致炎症信号传递.
结论:
- C9ORF72通过JAK-STAT通路和STING信号调节炎症.
- 在C9ORF72缺乏的细胞中,溶酶体完整性受到损害,可能会导致炎症反应.
- 针对JAK-STAT通路为患有C9ORF72突变的ALS/FTLD患者提供了一个有前途的治疗途径.
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