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铁致死有助于呼吸道上皮质E-cadherin干扰在混合粒细胞性喘小鼠模型中
Sudan Gan1, Liqin Lin2, Zemin Chen1
1State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
Experimental cell research
|April 12, 2024
概括
铁,细胞死亡途径,破坏了喘中的E-cadherin. 阻断铁灭可以防止气道过敏反应,并在混合颗粒细胞喘的小鼠模型中恢复E-cadherin.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 空气道上皮质中的异常E-cadherin表达是喘的特征.
- 铁亡,一种受调节的细胞死亡,与喘病因产生有关.
- 关联铁亡与喘中E-cadherin干扰的机制尚不清楚.
研究的目的:
- 为了研究铁化在混合粒细胞喘 (MGA) 中的作用.
- 确定铁死是否介导MGA中的E-cadherin干扰.
- 为了评估ferroptosis抑制的治疗潜力.
主要方法:
- 建立了两种使用多二酸 (TDI) 或卵胺/完全弗洛恩德辅助剂 (OVA/CFA) 的MGA小鼠模型.
- 给药的铁酶抗剂是利普洛克斯塔丁-1 (Lip-1) 和费洛斯塔丁-1 (Fer-1).
- 评估了呼吸道过敏反应,炎症,线粒体形态,铁亡标志物 (GPX4,FTH1,马隆迪化) 和E-cadherin表达 (膜和可溶性SE-cadherin).
主要成果:
- 对过敏原的暴露诱导了呼吸道表皮质中的铁亡标记物和线粒体损伤.
- 在MGA小鼠中,E-cadherin的表达减少,SE-cadherin增加.
- Lip-1治疗减弱了气道的高反应性,炎症,并恢复了E-cadherin的表达,抑制了sE-cadherin的释放.
结论:
- 铁死在MGA中调解E-cadherin功能障碍方面发挥着至关重要的作用.
- 抑制铁化提供了MGA的潜在治疗策略.
- 向铁亡可能会保持呼吸道上皮质完整性和喘中的功能.
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