铁致死有助于诱导的耳螺旋神经元神经元损伤
Huping Huang1, Lingyun Mei2, Lu Wang2
1Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Otolaryngology-Head and Neck Surgery, Hearing and Balance Medical Engineering Technology Center of Guangdong, The First People's Hospital of Foshan, Foshan, Guangdong, China.
Toxicology
|September 14, 2024
概括
暴露于会通过铁,导致尾螺旋质神经元 (SGN) 损伤,包括铁过载和氧化应激. 抑制铁衰可能为引起的听力损失提供一种新的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 诱导的耳螺旋质神经元 (SGN) 损伤背后的机制仍然不清楚.
- 研究像铁灭菌这样的细胞通路对于了解毒性至关重要.
研究的目的:
- 为了确定铁致死是否有助于诱导的SGN损伤.
- 阐明SGN中引起的铁过载的机制.
主要方法:
- 建立了酸诱导的SGN损伤的初级细胞培养模型.
- 测量铁含量,氧化应激标志物,以及与铁亡相关的基因/蛋白质表达.
- 观察到线粒体形态和铁灭抑制剂的影响.
主要成果:
- 乙酸以剂量和时间依赖的方式诱导SGN损伤.
- 观察到细胞内铁的积累,氧化应激增加,铁亡标记物 (GPX4,SLC7A11) 和铁代谢蛋白 (TFR1,NCOA4,HO-1) 的改变.
- 铁酶抑制剂显著保护SGNs免受诱导的损伤,观察到线粒体变化.
结论:
- 暴露会诱导SGN中的铁,由抗氧化剂防御系统功能障碍和铁代谢障碍介导.
- 抑制铁亡是一种潜在的治疗策略,用于预防和治疗与暴露相关的听力损失.
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