利波卡林-2通过NCOA4 / FTH1-介导的ferritinophagy通过加剧VSMCsferroptosis促进CKD血管化
Yujia Wang1, Yuxia Zhang1, Min Gao1
1Institute of Nephrology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.
Cell death & disease
|November 29, 2024
概括
向利波卡林-2 (LCN2) 可能在慢性病 (CKD) 中治疗血管化 (VC). 通过ferritinophagy诱导ferroptosis,LCN2促进VC,为CKD-VC提供了一个新的治疗点.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 心血管生物学 心血管生物学
- 细胞生物学 细胞生物学
背景情况:
- 血管化 (VC) 是慢性病 (CKD) 的常见,未经治疗的并发症.
- 慢性病中的高酸血症会诱导VC,部分是通过铁死,但潜在的机制尚不清楚.
- 卡林-2 (LCN2) 是一种铁贩运蛋白质,与铁灭的调节有关.
研究的目的:
- 研究LCN2作为CKD相关VC (CKD-VC) 中介的作用.
- 阐明高酸盐 (HP) 诱导VC中的LCN2和随后的铁亡的机制.
主要方法:
- 在HP条件下的CKD-VC患者,动物模型和血管光滑肌细胞 (VSMCs) 的动脉中检查了LCN2表达.
- 在高腺素和酸盐 (AP) 饮食中利用了LCN2淘汰赛 (LCN2KO) 和野生型 (WT) 老鼠.
- 研究了LCN2调制 (过度表达/抑制) 对HP诱导的VSMC中的化和铁化在体外和体内的作用.
主要成果:
- 动脉和VSMC中的HP诱导了LCN2表达.
- 与WT小鼠相比,LCN2KO小鼠表现出改善的AP诱导的CKD-VC.
- LCN2抑制减少了HP诱导的沉积和VSMC表型转变;LCN2过度表达加剧了VC.
- 在机械上,LCN2与NCOA4相互作用,通过FTH1降解促进依赖于ferritinophagy的ferroptosis.
结论:
- 在介导CKD-VC的过程中,LCN2通过ferritinophagy-dependent ferroptosis发挥着至关重要的作用.
- 准LCN2是一种有前途的治疗策略,可以缓解CKD患者的血管化.
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