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线粒体翻译障碍引发的神经炎症介导化物诱导的认知缺陷
Wenhui Liu1, Chenxi Wang1, Huayang Tang1
1Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
化物暴露会破坏线粒体翻译,导致神经炎症和认知缺陷. 自然化合物黄素 (CUR) 通过向线粒体功能障碍和炎症来逆转这些影响.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
背景情况:
- 化物暴露会导致多器官毒性,包括神经炎症和认知缺陷.
- 化物诱导的神经毒性与线粒体功能障碍有关,特别是破坏了线粒体翻译.
- 关联转化障碍,神经炎症和认知衰退的确切机制尚未得到充分理解.
研究的目的:
- 阐明化物暴露,线粒体翻译,神经炎症和认知缺陷之间的机制性相互作用.
- 为了确定化物诱导的神经毒性的关键分子参与者.
- 为了评估黄素 (CUR) 对化物神经毒性的治疗潜力.
主要方法:
- 在体内和体外进行了综合蛋白质和功能分析.
- 评估了线粒体核糖体蛋白L15 (MRPL15) 和CCAAT/增强剂结合蛋白-α (C/EBPα) 的水平.
- 评估了线粒体反应性氧物种 (mtROS) 生产,NLRP3炎症酶激活,热和认知功能.
- 研究了黄素 (CUR) 对这些通路的影响.
主要成果:
- 化物暴露通过C/EBPα提高了MRPL15的调节,破坏了线粒体的翻译忠实性.
- 这种干扰导致了线粒体反应性氧物种 (mtROS) 过度生产的增加.
- 升高的mtROS激活了NLRP3炎症酶,导致热细胞死亡和认知障碍.
- 黄素 (CUR) 治疗通过改善线粒体的生物能学和抑制mtROS/NLRP3-pyroptosis轴减轻了化物的神经毒性.
结论:
- 线粒体翻译干扰是一种新的机制,是化物诱导的神经炎症和认知缺陷的基础.
- 在调解化物的神经毒性作用方面,mtROS/NLRP3炎症酶途径至关重要.
- 黄素 (CUR) 显示出缓解化物神经毒性的治疗潜力.
- 这些发现需要在环境卫生政策中重新评估化物安全门.
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