H2S 通过稳定大鼠心脏细胞中的Fe-S集群,防止色素诱导的铁亡
Sara Linjacki1,2, Yuehong Wang1,2, Navjeet Baath1,2
1School of Natural Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada.
Cells
|March 13, 2024
概括
硫化 (H2S) 通过调节铁代谢和维护线粒体功能来保护心脏细胞免受损伤. 这种气体递质是维持细胞在缺血事件期间健康的关键.
科学领域:
- 生物化学 生物化学
- 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:
- 硫化 (H2S) 是一种新兴的气传递物,具有已证明的心脏保护作用.
- 铁对于许多细胞过程至关重要,包括线粒体功能.
- 铁代谢的失调与细胞损伤和疾病有关.
研究的目的:
- 研究H2S在铁代谢和大鼠心脏细胞中的线粒体功能中的调节作用.
- 阐明H2S对罗诺诱导的缺血细胞损伤的保护机制.
主要方法:
- 培养的老鼠心脏细胞用罗特治疗,以诱导体外缺血损伤模型.
- 硫化 (H2S) 补充剂和德费里 (一种铁化剂) 用于评估保护作用.
- 分析了线粒体功能,氧化应激,脂质过氧化,GPx4表达,细胞内铁含量和铁运输蛋白质.
主要成果:
- 轮诱导氧化应激,脂质过氧化,线粒体膜潜能降低,ATP生成,导致细胞死亡.
- 补充H2S可以通过减少氧化应激和线粒体损伤来保护氨酸诱导的铁细胞死亡.
- H2S维持了GPx4的表达,调节了细胞内铁水平,抑制了线粒体铁流量 (ABCB8),并促进了Fe-S集群生物发生 (NFS1).
- 轮刺激了依赖铁的H2S生成.
结论:
- H2S通过保护线粒体功能和维持细胞内铁平衡来保护心脏细胞免受缺血损伤.
- H2S调节线粒体铁运输和Fe-S集群生物发生,有助于其心脏保护作用.
- 准H2S通路可能为涉及缺血损伤的心血管疾病提供治疗策略.
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