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Esterase-响应性线粒体向的透硫化物捐赠者减轻多克索鲁比心脏毒性,同时保持抗癌活性
Jinjing Gu1, Qi Liu1, Deborah Rodriguez1
1Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21210, USA.
Angewandte Chemie (International ed. in English)
|December 12, 2025
概括
新的硫化捐赠剂可以保护心脏免受多克索鲁比毒性影响. 这些药物选择性地向癌细胞,保持或增强多克索鲁比.
科学领域:
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
- 心脏病学 心脏病学
背景情况:
- 多克索鲁比 (DOX) 化疗会导致严重的心脏毒性.
- 开发能够保持抗癌效能的心脏保护剂是必不可少的.
研究的目的:
- 开发新型的酶激活化 (RSSH) 供体,用于对DOX.抗心脏的保护.
- 研究这些药物在心脏与癌细胞中的差异性作用.
主要方法:
- 合成的甲基硫基碳酸盐 (AST-2) 和乙氧基碳酸盐 (APT-1) 以及它们的针对线粒体的类似物 (AST-2-TPP,APT-1-TPP).
- 评估了RSSH释放,细胞局部化 (LC-MS/MS) 和对H9c2心肌细胞和癌细胞系 (HepG2,MDA-MB-468,MCF-7) 中DOX毒性的影响.
- 研究的机制包括线粒体膜潜力和ATP水平.
主要成果:
- APT-1和APT-1-TPP以可调节的方式释放了RSSH.
- 所有捐赠者都保护了H9c2细胞免受DOX毒性的影响.
- 在癌细胞中,APT-1-TPP增强了DOX细胞毒性,而APT-1没有表现出抑制作用.
- 保护机制包括在H9c2细胞中拯救线粒体去极化和ATP枯竭,但不是癌细胞.
结论:
- 利用心脏和癌细胞之间的氧化还原异质性是开发向心脏保护疗法的可行策略.
- 新型RSSH捐赠者提供了一种有希望的方法,可以缓解多克索鲁比诱导的心脏毒性,同时保持或改善抗癌活性.
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