环胺对小鼠初级肝细胞代谢的作用
Yuanyuan Li1, Jinrui Shi2, Wen Ju3
1Department of Hematology, Xuzhou First People's Hospital, Xuzhou, 221000, People's Republic of China.
Toxicology mechanisms and methods
|March 16, 2026
概括
环胺 (CTX) 通过破坏肝细胞代谢,导致肝毒性. 这项研究揭示CTX诱导了"高消耗,低储存"的代谢状态,导致线粒体功能障碍和初级小鼠肝细胞中的氧化应激.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
- 代谢学 代谢学 代谢学
背景情况:
- 环胺 (CTX) 是一种广泛使用的化疗剂.
- 肝毒性是CTX的显著剂量限制副作用.
- 目前尚不完全了解CTX诱导的肝毒性背后的精确机制.
研究的目的:
- 研究CTX对初级小鼠肝细胞代谢概况的影响.
- 阐明CTX诱导的肝毒性在细胞和代谢水平的机制.
主要方法:
- 主要小鼠肝细胞被CTX治疗.
- 使用CCK8试验评估了细胞活力.
- 亡被通过Annexin V染色和流动细胞计量评估.
- 使用ELISA分析了代谢变化,测量了与脂质,氨基酸,葡萄糖和酸通路相关的关键代谢物和酶活性.
主要成果:
- CTX治疗导致其活性代谢物4-基cyclophosphamide的积累和显著的细胞毒性,包括细胞活力降低,形态变化和亡增加.
- 代谢分析显示,CTX诱导了"高消耗,低储存"的表型:增加脂质分解 (降低甘油三,增加甘激酶),增强糖解 (增加乳酸和酸),甘油素调动 (增加甘油素酸化酶,减少甘油素) 和酸通路激活 (增加G6PD).
- 观察到线粒体功能障碍和三碳酸 (TCA) 循环流量受损的证据 (乙-CoA升高,酸增加,阿斯巴胺转移酶减少),以及"激活但无效"的葡萄糖生成状态 (G6PC增加,FDP减少).
结论:
- 在初级肝细胞中,CTX诱导了显著的代谢重编程,其特征是增加了代谢和降低了代谢能力.
- 线粒体功能障碍和氧化应激似乎是CTX诱导肝毒性的关键驱动因素.
- 4-基cyclophosphamide的积累被认为是这种代谢中断的潜在上游因素.
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