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铁化作为一个潜在的治疗目标,以减少在细菌性角膜炎的炎症和角膜痕
Qiankun Chen1, Leying Wang1, Yuan Wei1
1Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing, China.
Investigative ophthalmology & visual science
|February 21, 2024
概括
细胞死亡途径铁亡是细菌角膜炎 (BK) 的关键. 在BK模型中,抑制铁亡减少了炎症和痕,为这种严重的眼部感染提供了一种有前途的新治疗方法.
科学领域:
- 眼科医生 眼科 眼科
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 细菌性角膜炎 (BK) 是一种严重的眼部感染,导致炎症,角膜痕和潜在的视力丧失.
- 了解BK病变的潜在机制对于开发有效的治疗方法至关重要.
研究的目的:
- 为了研究铁亡的作用,一种依赖铁的编程细胞死亡形式,在细菌角膜炎的发展.
- 在BK模型中评估抑制ferroptosis的治疗潜力.
主要方法:
- 对人类BK角膜的转录组分析,以识别改变的铁亡相关基因.
- 在 Pseudomonas aeruginosa 角膜炎和角膜 stromal 干细胞 (CSSCs) 的小鼠模型中验证了铁亡的参与.
- 治疗小鼠模型和CSSCs的levofloxacin (LEV) 和/或ferrostatin-1 (Fer-1),一个铁亡的抑制剂,然后对炎症标志物,痕和铁亡调节剂进行分析.
主要成果:
- 在人类BK角膜中观察到与铁亡相关基因的显著变化.
- 在小鼠模型中,与单独使用Lev相比,联合治疗levofloxacin和ferrostatin-1 (LEV+Fer-1) 减少了炎症性细胞因子,角膜痕和铁水平.
- 在CSSCs中,ferrostatin-1在体外治疗逆转了脂聚糖类诱导的活性氧物种,铁和关键铁灭调节器 (GPX4,SLC7A11) 的变化.
结论:
- 铁亡是细菌角膜炎的病变发生的一个关键因素.
- 抑制铁灭症证明了减少BK中的炎症和角膜痕的治疗潜力.
- 向ferroptosis为改善BK结果的新型治疗策略提供了一个有希望的途径.
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