微质炎症反应的降氧调节:通过Nrf2和NOX4精确控制NLRP3炎症体
Alejandra Palomino-Antolín1, Céline Decouty-Pérez1, Víctor Farré-Alins1
1Unidad de Investigación, Hospital Santa Cristina, Instituto de Investigación Sanitaria Princesa (IIS-IP), 28006 Madrid, Spain.
Antioxidants (Basel, Switzerland)
|September 28, 2023
概括
神经炎症涉及NLRP3炎症酶激活. 这项研究表明NADPH氧化酶4 (NOX4) 和核因子红色素2相关因子2 (Nrf2) 调节NLRP3,这表明NOX4抑制是神经退行性疾病的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 在神经退行性疾病的发病过程中,人们越来越认识到炎症和免疫力.
- 类似NOD的受体蛋白3 (NLRP3) 炎酶体是炎症反应的核心,成熟的促炎细胞因子如IL-1β.
- 核因子红色素2相关因子2 (Nrf2) 和NADPH氧化酶4 (NOX4) 之间的相互作用被假定会影响NLRP3炎症酶激活.
研究的目的:
- 研究Nrf2-NOX4通路在NLRP3炎症酶激活中的作用.
- 探索NOX4抑制在神经炎症和认知障碍中的治疗潜力.
主要方法:
- 在混合质培养中利用了NOX4和Nrf2的淘汰 (KO) 鼠标.
- 向主要细胞注射脂聚糖 (LPS),然后进行ATP刺激.
- 在LPS诱导的认知障碍模型中使用GKT136901抑制NOX4.
- 在质培养物和小鼠海马体中测量了细胞因子释放 (IL-1β) 和基因表达 (NOX4,NLRP3).
主要成果:
- 缺少NOX4和Nrf2显著降低了IL-1β的释放.
- 通过GKT136901抑制NOX4,降低了IL-1β释放和NLRP3表达.
- 使用LPS诱导了认知障碍,并改变了海马中的NLRP3/NOX4表达.
- 在LPS后,GKT136901治疗改善了认知功能,并使炎症基因表达正常化.
结论:
- NADPH氧化酶4 (NOX4) 是NLRP3炎症酶激活中的关键调解剂.
- Nrf2信号影响NLRP3的激活,可能通过NOX4.
- 药物抑制NOX4为神经炎症特征的神经退行性疾病提供了一个有希望的治疗途径.
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