通过抑制线粒体复合体I和II,CMIT/MIT通过抑制线粒体复合体I和II产生线粒体ROS
Donghyun Kim1, Yusun Shin2, Jong-In Park2
1College of Pharmacy, Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, 15588, South Korea; College of Pharmacy, Keimyung University, Daegu, 42601, South Korea.
5-chloro-2-methyl-4-isothiazolin-3-one和2-methyl-4-isothiazolin-3-one (CMIT/MIT) 生物制剂通过破坏线粒体功能而导致肺损伤. CMIT/MIT抑制了线粒体复合物I和II,导致氧化应激和细胞衰老.
科学领域:
- 毒理学 毒理学 毒理学
- 线粒体生物学 线粒体生物学
- 生物化学 生物化学
背景情况:
- 5-chloro-2-methyl-4-isothiazolin-3-one和2-methyl-4-isothiazolin-3-one (CMIT/MIT) 是一种用于消费品和加湿器消毒剂的生物杀菌剂.
- 对于CMIT/MIT的毒性,特别是对呼吸系统的毒性,是令人担忧的.
- 氧化应激与CMIT/MIT毒性有关,但分子标仍然不清楚.
研究的目的:
- 研究CMIT/MIT对线粒体氧化还原调节的影响.
- 确定负责CMIT/MIT诱导的活性氧物种 (ROS) 生成的分子标.
主要方法:
- 在使用H441细胞的体外实验.
- 评估了线粒体复合体I和II活动.
- 分析了CMIT/MIT与酸脱酶复合体亚单元B (SDHB) 的结合亲和力.
- 评估了ROS的产生和线粒体解效应.
主要成果:
- CMIT/MIT抑制了线粒体复合体I和II,导致生物能干扰.
- CMIT/MIT对SDHB有很高的结合亲和力.
- 抑制糖酸脱酶 (SDHA) 放大了CMIT/MIT诱导的ROS产生.
- CMIT/MIT诱导了线粒体功能障碍,改变了线粒体动态,并促进了细胞衰老.
结论:
- 线粒体复合体I和II是CMIT/MIT细胞毒性中的分子启动事件.
- CMIT/MIT诱导的线粒体功能障碍有助于肺损伤.
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