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氧化应激和线粒体功能障碍是由初级草鱼肝细胞中的蓝藻细菌微囊素-LR诱导的
Miao He1, Hui Wang1, Jianping Fu2
1College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi Province 330045, PR China.
Aquatic toxicology (Amsterdam, Netherlands)
|March 23, 2025
概括
微素-LR (MC-LR) 通过诱导氧化应激和损害线粒体功能,导致草鱼的肝细胞受损. 这项研究揭示了MC-LR.
科学领域:
- 水生毒理学 水生毒理学
- 环境健康 环境健康
- 细胞生物学 细胞生物学
背景情况:
- 微囊素-LR (MC-LR) 是一种导致肝损伤的菌毒素.
- 在水生生物肝细胞中MC-LR毒性的机制尚未完全理解.
研究的目的:
- 研究MC-LR对草鱼肝细胞中氧化应激和线粒体功能的影响.
- 阐明MC-LR诱导的肝毒性机制.
主要方法:
- 草肝细胞的初级培养.
- 在不同度 (0-1.20μmol/L) 的MC-LR暴露.
- 对细胞活力 (LDH),氧化应激 (ROS),线粒体功能 (MMP,ATP),基因表达 (qRT-PCR) 和超结构 (电子显微镜) 的测试.
主要成果:
- MC-LR降低了细胞活力,诱导了氧化应激 (增加ROS,改变基因表达),并损坏了线粒体超结构.
- MC-LR提高了细胞内Ca2 +,降低了线粒体膜潜能 (MMP) 和ATP水平,并抑制了复杂I.
- MC-LR降低了参与氧化应激反应和线粒体质量控制的基因.
结论:
- 通过氧化应激和线粒体功能障碍,MC-LR在草中诱导肝毒性.
- 结果提供了对MC-LR毒性机制的见解,并为进一步研究提供参考.
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