通过反应性氧物种-无素路径,纳弗暴露会抑制骨质分化
Chawon Yun1, Sou Hyun Kim1, Sang Hoon Joo2
1Department of Pharmacy, College of Pharmacy, Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea.
Ecotoxicology and environmental safety
|August 30, 2025
概括
通过破坏Wnt/β-catenin通路来抑制骨质细胞功能和骨形成. 抗氧化剂治疗可以恢复骨质活性,这表明反应性氧物种在甲毒性中起作用.
科学领域:
- 生物化学
- 细胞生物学
- 毒理学
背景情况:
- 纳弗的急性和慢性毒性已知,但其对骨质生成的影响尚未研究.
- 骨质细胞对于骨形成至关重要, 它们的功能对骨健康至关重要.
研究的目的:
- 研究甲对骨质细胞功能和骨质生成差异化的毒性影响.
- 阐明纳对骨质生成的影响的分子机制,重点关注Wnt/β-catenin通路.
主要方法:
- 使用类似骨质细胞的MG-63细胞和3D球形模型.
- 评估性酸酶 (ALP) 活性,矩阵矿化和骨质标记物的表达 (mRNA和蛋白质).
- 研究了Wnt/β-catenin信号通路,反应性氧物种 (ROS) 水平和蛋白质体降解.
主要成果:
- 在非细胞毒性度下,纳弗抑制了MG-63细胞中的ALP活性和基质矿化.
- 关键骨质标志物 (例如RUNX2,Osterix,COL1A1) 的下调和β-catenin信号的抑制.
- 纳法增加了细胞内ROS,增强了GSK3β活性,并促进了β-catenin的蛋白质体降解,而N-乙半氨酸则逆转了这种情况.
结论:
- 这项研究通过3D模型证明了纳对MG-63细胞骨质分化的抑制作用.
- 纳弗他林诱导的ROS产生破坏了Wnt/β-catenin/GSK3β通路,损害了骨质生成.
- 需要进一步的研究才能充分了解在骨形成中的分子机制.
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