α-阿曼尼丁通过肝细胞中的AMPK-mTOR-ULK1信号通路诱导自
Yue Xu1, Shangwen Wang1, Chi-Kwan Leung2
1NHC Key Laboratory of Drug Addiction Medicine,Department of Forensic Medicine, School of Forensic Medicine, Kunming Medical University, Kunming, China.
Toxicology letters
|June 17, 2023
概括
来自有毒的阿尔法-阿曼因诱导自而导致肝损伤. 这项研究揭示AMPK-mTOR-ULK通路是这一过程的关键,为中毒提供了潜在的治疗点.
科学领域:
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 亚马尼中毒,特别是来自Amanita phalloides,是一个严重的健康风险.
- 阿尔法-阿曼丁是主要负责肝毒性的毒素.
- 阿尔法-阿米尼丁诱导的肝损伤的确切机制及其与自的联系仍然不清楚.
研究的目的:
- 研究alpha-amanitin诱导肝毒性的机制.
- 为了确定alpha-amanitin是否会在肝细胞和老鼠肝脏中诱导自.
- 探索AMPK-mTOR-ULK途径在α-阿曼因诱导的自和肝损伤中的作用.
主要方法:
- 暴露Sprague Dawley大鼠和L02人类肝细胞在不同度的α-amanitin.
- 使用自调节剂 (拉帕米辛,3-甲基拉丁胺) 和AMPK抑制剂 (化合物C).
- 通过Western blot分析与自相关的蛋白质和AMPK-mTOR-ULK通路蛋白质.
主要成果:
- 在大鼠中,阿尔法-阿曼因暴露导致肝细胞形态变化和ALT/AST水平升高.
- 在老鼠肝脏中,自标记物 (LC3-II,Beclin-1,ATG5,ATG7) 和AMPK-mTOR-ULK通路蛋白 (AMPK,p-AMPK,mTOR,p-mTOR,ULK1) 的表达增加.
- 阿尔法-阿米尼丁诱导了自,并激活了L02细胞中的AMPK-mTOR-ULK1通路,在用调节器治疗后观察到显著的变化.
结论:
- 自和AMPK-mTOR-ULK通路在阿尔法-阿曼胺诱导的肝损伤中起着重要作用.
- 这些发现提供了关于阿曼尼塔化物中毒的分子机制的见解.
- 确定这些途径可能会导致治疗中毒的新疗法策略.
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