由NCOA4介导的费里丁菌产生的铁通过cGAS-STING通路引起细胞衰老
Hong-Ying Li1, Ting-Ting Wei2, Miao Zhuang1
1Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, China.
Cell death discovery
|November 18, 2023
概括
铁的积累驱动了视网膜色素上皮细胞中的细胞衰老,这是与年龄相关的黄斑退化的一个关键因素. 针对铁过载提供了一个潜在的治疗策略,用于老化眼睛疾病.
科学领域:
- 细胞生物学 细胞生物学
- 眼科医生 眼科 眼科
- 衰老研究研究 衰老研究
背景情况:
- 细胞衰老是与年龄相关疾病相关的关键衰老标志.
- 视网膜色素上皮 (RPE) 细胞衰老与与年龄相关的黄斑变性 (AMD) 有关,但潜在的机制尚不清楚.
研究的目的:
- 为了研究高铁在RPE细胞衰老中的作用.
- 阐明铁过载诱导RPE衰老的机制.
主要方法:
- 使用的三丁氧化 (TBH) 和D-银糖模型用于RPE衰老在体外和体内.
- 采用铁酸 (FAC) 来诱导铁过载,并研究了铁代谢,衰老,自,线粒体功能和cGAS-STING通路.
- 使用分子生物学技术评估铁含量,费里丁,NCOA4,线粒体DNA (mtDNA) 和与衰老相关的分泌表型 (SASP).
主要成果:
- 在RPE细胞衰老过程中,铁含量增加.
- 通过NCOA4介导的费里丁菌有助于铁的积累.
- 铁过载会诱导线粒体功能障碍,导致细胞质mtDNA释放和cGAS-STING通路的激活,促进SASP和衰老.
- 铁化剂德费罗胺 (DFO) 在体内改善了RPE衰老和视网膜病变.
结论:
- 铁的积累,由NCOA4介导的费里替诺法基驱动,通过cGAS-STING通路诱导RPE细胞衰老.
- 抑制铁积累为AMD和其他与年龄相关的疾病提供了潜在的治疗途径.
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