在Fuchs内皮角膜缩症中非亡调节的细胞死亡
Saki Sakakura1, Emi Inagaki1,2,3, Tomoko Sayano1,4
1Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan.
Regenerative therapy
|November 30, 2023
概括
福克斯内皮角膜缩症 (FECD) 涉及氧化应激和副细胞细胞死亡. 针对这种途径为FECD提供了潜在的治疗策略,FECD是导致角膜失明的首要原因.
科学领域:
- 眼科医生 眼科 眼科
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 福克斯内皮角膜缩症 (FECD) 是角膜失明的主要原因.
- 在FECD中,角膜内皮细胞易受氧化应激的影响,导致线粒体功能障碍和细胞死亡.
- 帕尔塔纳托斯是一种细胞死亡途径,涉及诱导亡因子 (AIF),多 (ADP-ribose) 聚合酶1 (PARP-1) 和多 (ADP-ribose) (PAR),与氧化应激诱导的细胞死亡有关.
研究的目的:
- 使用诱导多能干细胞 (iPSCs) 建立FECD的新型体外模型.
- 调查氧化应激和FECD病理生理学中的Partanatos的作用.
- 评估FECD的潜在治疗目标.
主要方法:
- 角膜内皮细胞是从FECD特定的iPSC中衍生出来的.
- 使用过氧化 (H2O2) 诱导氧化应激.
- 分析了细胞死亡,氧化应激水平以及甲状腺通路标记物 (PARP-1,AIF,PAR).
主要成果:
- 在H2O2处理后,FECD细胞表现出增加的细胞死亡和氧化应激水平.
- 在FECD细胞中观察到PARP-1,核中的AIF和细胞内PAR的升级.
- 抑制PARP,但不抑制caspase,可以防止细胞死亡,DNA损伤和线粒体功能障碍,证实了帕尔塔纳托斯的参与.
结论:
- 帕尔塔纳托斯与FECD的病理生理学有关.
- 准甲状腺通路为FECD提供了一个有前途的治疗策略.
- 在体外开发的FECD模型有助于进一步研究FECD的病原性.
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