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补充C5aR阻塞通过通过核因子-红素2相关因子2信号在小鼠中调节ferroptosis减弱LPS诱导的急性损伤
Rong-Cheng Xie1, Jin-Cheng Zhang2, Ting Huang1
1Department of Critical Care Medicine, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, 361015, Fujian province, PR China.
Free radical biology & medicine
|July 23, 2025
概括
使用W54011准C5a受体 (C5aR) 有效地治疗小鼠的急性损伤 (AKI). C5aR阻塞减轻铁和炎症,通过恢复关键细胞通路来保护功能.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 急性损伤 (AKI) 是一种具有显著发病率的危急疾病.
- 脂聚糖 (LPS) 是AKI的常见触发因素,涉及炎症和氧化应激路径.
- 铁亡,一种受调节的细胞死亡形式,与AKI的发病有关.
研究的目的:
- 为了研究C5a受体 (C5aR) 阻断在LPS诱导的AKI的小鼠模型中的治疗疗效.
- 阐明潜在的机制,包括铁和涉及的特定信号通路.
主要方法:
- LPS诱导的AKI的小鼠模型.
- 使用C5aR抗剂W54011.11的使用.
- 评估形态,铁含量,氧化应激标志物和炎症性细胞因子.
- 传输电子显微镜用于细胞损伤评估.
- 西部斑点和免疫光用于信号通路分析 (p38,Nrf2/SLC7A11/GPX4).
主要成果:
- LPS诱导形态损伤和增加中的铁含量,表明铁亡.
- W54011治疗逆转了LPS诱导的损伤,降低了铁水平,并减弱了N-乙-β-D-葡萄糖胺酶 (NAG) 和细胞因子水平.
- W54011保护了管状上皮细胞免受线粒体损伤和铁亡.
- C5aR阻断抑制了p38酸化,并恢复了Nrf2/SLC7A11/GPX4通路,增强了抗氧化防御.
结论:
- 用W54011阻断C5aR是一种有前途的治疗策略,用于LPS诱导的AKI.
- 保护作用通过通过p38/Nrf2/SLC7A11/GPX4信号轴抑制铁和炎症进行介导.
- 向C5aR提供了一种潜在的方法来管理涉及铁亡的病.
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