YTHDF1-CLOCK轴通过LLPS促进过敏气道炎症的致病性
Jing Wang1, Yao Zhou2, Meng Zhang2
1Department of Pediatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Cell reports
|March 16, 2024
概括
YTHDF1,一个关键的N6-甲基氨酸读者,通过增强CLOCK翻译和激活NLRP3炎症酶,驱动过敏气道炎症. 向YTHDF1可能为喘提供新的治疗策略.
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:
- N6-甲基氨酸 (m6A) 是一种关键的RNA修饰,参与各种细胞过程和疾病.
- 一种m6A读者蛋白质YTHDF1有助于翻译,但其在过敏呼吸道炎症中的作用以前是未知的.
研究的目的:
- 研究YTHDF1在过敏气道炎症中的作用.
- 确定将YTHDF1与喘病原体联系起来的分子机制.
主要方法:
- 定量实时PCR和西部抹杀来评估YTHDF1和CLOCK表达.
- 免疫光和共免疫沉以研究蛋白质-RNA相互作用和复合物形成.
- 评估炎症反应,包括细胞因子分泌和炎症酶激活,体外和体内模型.
- 通过CRISPR-Cas9调解基因删除来评估CLOCK的必要性.
主要成果:
- 在过敏性气道上皮细胞和喘患者中,YTHDF1的表达显著升高.
- YTHDF1直接与CLOCK mRNA结合,以一种m6A依赖的方式增强其翻译.
- 过敏原诱导YTHDF1液体-液体相分离 (LLPS),形成含有YTHDF1和CLOCK mRNA的应力颗粒.
- YTHDF1促进NLRP3炎症酶激活和IL-1β分泌,导致呼吸道炎症; 这些效应依赖于CLOCK.
结论:
- YTHDF1在调节喘性气道炎症方面发挥着至关重要的作用.
- YTHDF1-CLOCK轴是驱动过敏气道炎症的关键途径.
- YTHDF1代表了管理喘等过敏呼吸道疾病的潜在治疗标.
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