通过抑制Nrf2/HO-1通路,NOX1介导的氧化应激会诱导冠状细胞铁亡
Lin Tao1, Keda Yang1, Ke Wang1
1Department of Orthopedics, First Hospital of China Medical University, Shenyang, China.
Scientific reports
|August 27, 2024
概括
由NOX1驱动的氧化应激会导致骨关节炎 (OA) 中的软骨破坏,通过状细胞铁亡. 向NOX1和激活Nrf2/HO-1通路可能提供新的OA治疗方法.
科学领域:
- 生物医学科学 生物医学科学
- 整形外科 整形外科 整形外科
- 细胞生物学 细胞生物学
背景情况:
- 骨关节炎 (OA) 是一种与衰老相关的流行性退行性关节疾病,严重影响患者的生活质量.
- 目前的OA治疗方法是有限的,因为对其病变发生的理解不完全,特别是氧化应激的作用.
- 氧化应激,以增加反应性氧化物种 (ROS) 为特征,与甲状腺炎的冠状细胞功能障碍和软骨退化有关.
研究的目的:
- 调查NOX1-介导的氧化应激在OA中的状细胞铁和软骨破坏中的作用.
- 为了阐明Nrf2/HO-1通路在NOX1诱导的冠状细胞损伤中的参与.
- 根据这些机制,确定OA的潜在治疗点.
主要方法:
- 冠状细胞分析了氧化应激标志物 (GSH,MDA) 和铁.
- 通过细胞传染来抑制NOX1表达,以评估其影响.
- 测量了线粒体膜潜力和细胞内ROS水平,以评估氧化损伤.
- 研究了Nrf2/HO-1通路在NOX1活动和冠状细胞损伤方面的作用.
主要成果:
- 冠状细胞中减少的GSH和增加的MDA水平表明OA中的ferroptosis诱导.
- 铁亡被证实是软骨破坏的关键机制.
- 抑制NOX1逆转了状细胞损伤,使原II和MMP13表达和IL-1β和TNF-α分泌正常化.
- 发现NOX1抑制了Nrf2/HO-1通路,而Nrf2激活减轻了氧化损伤.
结论:
- 通过抑制Nrf2/HO-1通路,NOX1介导的氧化应激会诱导冠状细胞铁,从而导致OA的发病.
- 这些发现强调NOX1是OA发展的关键因素,并建议向NOX1或激活Nrf2/HO-1作为潜在的治疗策略.
- 这项研究提供了对OA病变的洞察力,并为药物设计和临床治疗优化提供了新的目标.
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