在转基因小鼠中过度表达硫素-1可以减轻阿德里亚米辛诱导的心脏毒性
Keisuke Shioji1, Chiharu Kishimoto, Hajime Nakamura
1Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Japan.
Circulation
|September 11, 2002
概括
铁素-1 (TRX1) 通过减少氧化应激来对抗阿德里亚米辛 (ADR) 诱导的心脏损伤. 这种氧化还原调节分子在细胞培养和动物模型中都表现出对ADR心脏毒性的保护作用.
科学领域:
- 生物化学 生物化学
- 心脏病学 心脏病学
- 分子生物学分子生物学
背景情况:
- 阿德里亚米 (ADR) 是一种有效的抗癌药物.
- 治疗ADR可以导致严重的心脏毒性,由于自由基的产生.
- 硫素-1 (TRX1) 是一个关键的氧化还原调节分子.
研究的目的:
- 为了研究铁素-1 (TRX1) 在阿德里亚胺素 (ADR) 诱导的心脏毒性的作用.
- 为了确定TRX1是否可以减轻ADR诱导的心脏损伤.
主要方法:
- 在体外研究中,使用新生小鼠心肌细胞治疗ADR和复合人类TRX1.
- 在体内研究中使用过度表达TRX1 (TRX1-TG) 的转基因小鼠和被ADR治疗的野生型 (WT) 小鼠.
- 评估心肌细胞损伤,通过电子显微镜的细胞结构,蛋白质氧化标记,基形成和生存率.
主要成果:
- 在ADR治疗心肌细胞中,TRX1的表达随着基的形成而增加.
- 再组合TRX1保护心肌细胞在体外受到ADR诱导的损伤.
- 与ADR治疗后的WT小鼠相比,TRX1-TG小鼠显示出更好的细胞结构保存和减少蛋白质氧化.
- TRX1-TG小鼠在ADR给药后表现出降低基形成和显著改善的生存率.
结论:
- 阿德里亚米辛诱导细胞内氧化应激,导致TRX1.1的上调.
- 通过减轻氧化应激,TRX1在抗抗阿德里亚胺素诱导的心脏毒性方面发挥着重要的保护作用.
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