Mettl3/Ythdf2通过控制Pyk2mRNA稳定性来调节巨细胞炎症和ROS生成
Yongjie Cai1, Ruiqing Yu1, Zhanqi Zhang1
1Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
Immunology letters
|November 12, 2023
概括
通过调节Pyk2mRNA稳定性,RNA修饰N6-甲基氨酸 (m6A) 作者Mettl3减轻了炎症. Mettl3通过Ythdf2控制Pyk2的表达,影响炎症路径和反应性氧物种 (ROS) 生产.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- N6-甲基氨酸 (m6A) 是一种常见的RNA修饰,涉及病理学.
- 梅特尔3,一个作家,在免疫反应中发挥作用,但其精确的机制尚不清楚.
- 不一致的发现强调了需要确定Mettl3在炎症中的特定点.
研究的目的:
- 为了研究Mettl3在细胞炎症反应中的作用.
- 为了确定参与炎症的Mettl3点基因.
- 阐明Mettl3调节炎症通路的分子机制.
主要方法:
- 在Mettl3-ablated巨中进行RNA测序 (RNA-seq).
- 一个映射和RIP-PCR.
- 对炎症标记物,ROS生成和信号通路激活 (MAPK,AKT) 的分析.
- 使用Pyk2抑制剂进行验证.
主要成果:
- 梅特尔3剥离增强了LPS诱导的IL-6,TNF-α,NOXs表达,ROS生成和MAPK/AKT酸化.
- Pyk2被确定为一个潜在的Mettl3目标基因.
- Mettl3和Ythdf2的耗尽增加了Pyk2表达和mRNA稳定性.
- Ythdf2以一种Mettl3依赖的方式直接准Pyk2.
- 抑制Pyk2可以逆转Mettl3 knockdown诱导的炎症反应.
结论:
- 梅特尔3通过Ythdf2.2调节Pyk2mRNA的稳定性和表达.
- 这种调节影响了MAPK和AKT信号传递,NOX的上调调节,以及随后的促炎细胞因子和ROS的产生.
- 通过控制Pyk2.2,Mettl3作为炎症反应的负调节剂.
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