探索针对线粒体的基于他莫西芬的金属复合物的抗癌活性
Valeria Scalcon1, Riccardo Bonsignore2, Jana Aupič3
1Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/b, 35131 Padova, Italy.
Journal of medicinal chemistry
|July 6, 2023
概括
新的黄金 (Au(III)) 和铜 (Cu(II)) 金属药物,AuTAML和CuTAML,对乳腺癌细胞表现出抗癌作用. 这些混合化合物诱导氧化还原失衡和线粒体损伤,提供了一种新的治疗策略.
科学领域:
- 药用化学 医学化学
- 纳米技术纳米技术
- 生物化学 生物化学
背景情况:
- 塔莫西芬是一种广泛用于治疗雌激素受体阳性乳腺癌的药物.
- 金属药物为癌症治疗提供了替代作用机制.
- 混合药物设计旨在结合金属离子和有机配体的好处.
研究的目的:
- 设计和合成新型黄金 (III) 和铜 (II) 混合金属药物,其中包含泰莫西芬药.
- 评估这些金属药物对人类乳腺癌细胞系的抗增殖活性.
- 研究它们的抗癌作用背后的分子机制,包括与雌激素受体的相互作用,氧化还原调节和线粒体毒性.
主要方法:
- (III) (AuTAML) 和 (II) (CuTAML) 金属药物的合成和表征.
- 采用MCF-7和MDA-MB 231乳腺癌细胞进行的体外抗增殖试验.
- 分子动力学模拟以评估雌激素受体结合.
- 在体外和在体内进行研究,以确定酶抑制和硫醇氧化.
- 细胞氧化还原状态的分析,包括总醇和活性氧物种 (ROS) 生产.
- 评估线粒体功能 (呼吸,膜潜力,形态).
主要成果:
- 无论是AuTAML还是CuTAML,都对人类乳腺癌细胞表现出显著的抗增殖作用.
- 分子动力学表明,雌激素受体结合活性保留.
- AuTAML抑制了硫素还原酶,而CuTAML则氧化了细胞内硫醇.
- 治疗导致了氧还原失衡,其特点是总醇减少和ROS增加.
- 这两种金属药物都诱导了大量的线粒体损伤,影响了呼吸,膜潜力和形态.
结论:
- 设计的混合金属药AuTAML和CuTAML显示出对抗乳腺癌的有前途的抗癌潜力.
- 它们的独特机制涉及氧化还原调制和显著的线粒体破坏.
- 这些发现强调了将金属离子与他莫西芬结合起来,具有协同作用的抗癌活性的治疗前景.
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