新兴的 perfluoroalkyl 物质通过铁灭症加速骨质母细胞衰老,从而减缓骨生长
Xinglong Wang1, Kehan Wang1, Wenwen Mao1
1Department of Orthopedics, Affiliated Hospital of Yangzhou University, Yangzhou, China.
Environmental research
|June 24, 2024
概括
perfluorooctanoic 酸 (PFOA) 和它的替代品,GenX 和 PFO3TDA,通过促进骨质细胞衰老,损害骨发育. 抑制铁亡是一种潜在的治疗策略,可以缓解这些对骨生长的有毒影响.
科学领域:
- 环境毒理学环境毒理学
- 骨生物学 骨生物学 骨生物学
- 化学安全 化学安全
背景情况:
- perfluorooctanoic 酸 (PFOA) 对健康构成重大风险.
- 新兴的PFOA替代品,如GenX和PFO3TDA,需要进行毒理学评估.
- 关于PFOA及其替代品对骨的影响的数据有限.
研究的目的:
- 研究PFOA,GenX和PFO3TDA对骨发育和骨质细胞功能的影响.
- 阐明涉及PFOA诱导的骨毒性的潜在分子机制,包括铁亡.
- 探索与PFOA相关的骨损伤的潜在治疗干预措施.
主要方法:
- 将PFOA,GenX和PFO3TDA给雄性BALB/C小鼠使用.
- 使用X射线和微型CT扫描进行骨结构分析.
- 评估骨质细胞衰老,基因表达和ferroptosis通路的激活.
- 在细胞培养中使用ferrostatin-1 (Fer-1) 抑制ferroptosis.
主要成果:
- 暴露于PFOA,GenX和PFO3TDA导致股骨和骨缩短,骨密度降低.
- 这些化学物质诱导了骨质细胞衰老,减少了骨质基因表达,增加了衰老/炎症标志物.
- 在PFOA治疗的骨质细胞中观察到铁灭路径激活,脂质过氧化和铁积累.
- 费罗斯塔丁-1治疗成功缓解了细胞衰老,并改善了骨质生成能力.
结论:
- 酸及其替代品通过诱导骨质细胞衰老,对骨发育产生负面影响.
- 铁亡是一个关键的机制,有助于这些化合物的骨毒性.
- 向铁亡途径为PFOA及其替代品引起的骨损伤提供了一个有希望的治疗途径.
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