双-2-乙烯基) -2,3,4,5-四博甲酸盐通过Gadd45b-MKK7-p21路径诱导神经发育毒性:细胞循环停止和线粒体功能障碍
Huijia Tang1,2,3, Yongyong Guo1, Tao Xu1,2
1State Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Environmental science & technology
|March 13, 2026
概括
乙二甲基甲酸-2,3,4,5-甲基甲酸 (TBPH) 是一种阻燃剂,通过阻止细胞生长和损害线粒体,引起神经毒性. 在斑马鱼中阻断Gadd45b-MKK7-p21通路可以逆转这些有害影响.
科学领域:
- 环境毒理学环境毒理学
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
背景情况:
- 乙-2-乙-2,3,4,5-四甲 (TBPH) 是一种在环境和生物样本中发现的新型制阻燃剂.
- TBPH的神经毒性机制在很大程度上仍未被定义.
研究的目的:
- 阐明TBPH诱导的神经毒性的基础分子机制.
- 确定参与斑马鱼TBPH神经发育毒性的关键信号通路.
主要方法:
- 斑马鱼暴露于环境相关的TBPH度.
- 进行了行为,分子和转录组分析.
- 用Gadd45b-MKK7通路的药理抑制来评估因果关系.
主要成果:
- 通过Gadd45b和p21上调调节,TBPH暴露诱导了G1阶段细胞循环的停止.
- 观察到线粒体功能障碍,包括膜潜力降低和ATP产生,以及氧化应激.
- 暴露于TBPH导致了斑马鱼的神经退行,神经递质失调和多动.
- 抑制Gadd45b-MKK7信号传递恢复了正常的细胞周期进展和线粒体功能,改善了神经发育缺陷.
结论:
- 线粒体相关的细胞循环停止是驱动TBPH神经毒性的关键机制.
- Gadd45b-MKK7-p21信号通路是TBPH诱导的神经发育毒性的关键调节者.
- 这些发现为评估TBPH和类似毒性物质对生态健康的风险提供了一个机制框架.
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