在ALS细胞模型中,暴露于会通过激活MAPK/ERK信号通路来诱导铁
Yi Gao1, Bingxue Zheng2, Xiaoxiao Peng2
1School of Public Health, MOE Key Laboratory of Coal Environmental Pathogenicity and Prevention, Shanxi Medical University, Taiyuan 030001, China; State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China.
Ecotoxicology and environmental safety
|October 28, 2025
概括
暴露可以触发铁亡,细胞死亡途径,在肌缩性侧面硬化症 (ALS) 细胞. 针对MAPK/ERK途径可能为诱导的ALS提供新的策略.
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:
- 是一种已知的有毒物质,影响多个器官系统.
- 据怀疑,暴露会导致肌缩性侧面硬化症 (ALS) 的进展.
- 将暴露与ALS联系在一起的确切机制尚不清楚,实验证据有限.
研究的目的:
- 使用ALS细胞模型研究暴露和ALS之间的关系.
- 探索铁灭菌在诱导的ALS病变发生中的作用.
- 阐明对ALS细胞的影响背后的分子机制.
主要方法:
- 建立一个暴露于的ALS细胞模型 (hSOD1G93A细胞).
- 评估氧化应激标志物 (ROS,MDA),铁含量和谷氨 (GSH) 含量.
- 分析线粒体形态和关键的铁与相关的蛋白质 (ACSL4,SLC7A11,GPX4).
- 生物信息学分析和细胞实验以确定涉及的信号通路.
主要成果:
- 在hSOD1G93A细胞中,暴露诱导了铁,由增加的ROS/MDA,铁和ACSL4证明,并降低了GSH,SLC7A11和GPX4.
- 观察到线粒体损伤,包括真空化和晶状体破坏.
- 确定MAPK/ERK信号通路的激活在ALS细胞中诱导的铁亡中至关重要.
结论:
- 暴露会通过涉及氧化应激和线粒体功能障碍的机制触发ALS细胞中的铁亡.
- MAPK / ERK信号通路在ALS病变发生过程中关键地参与了诱导的铁亡.
- 通过MAPK/ERK途径抑制铁亡是一种潜在的治疗策略,用于与相关的ALS.
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