Mitochondrial Mode of Action of a Thymidine-Based Cisplatin Analogue Breaks Resistance in Cancer Cells
作者:Liliane A. Onambele、Daniel Koth、Justyna A. Czaplewska、Ulrich S. Schubert、Helmar Görls、Shigenobu Yano、Makoto Obata、Michael Gottschaldt、Aram Prokop
DOI:10.1002/chem.201000785
日期:2010.12.27
Detailed in vitro studies on the apoptosis pathway in lymphoma (BJAB), leukemia (NALM‐6), and melanoma cells (Mel‐HO) as well as on transfected or resistant cell lines were carried out. Thymiplatin significantly induced an apoptotic response, which was found to be associated with the loss of mitochondrial membrane potential and with caspase activation. The activity was shown to be independent of Fas‐associated
摘要:用铂(II)和钯(II)从3开始顺铂类似物复合物',5'-二氨基-3',5'-二脱氧胸苷合成,既与d -赤-和d -苏配置。通式[内侧副韧带络合物2获得和表征L]。NMR光谱测量和单晶X射线结构分析表明,金属中心是通过3'和5'位置的氨基而不是胸腺嘧啶部分与配体配位的。所有配体和配合显示,除了thymiplatin体外活性(无显著顺二氯3(',5'-二氨基-3',5'-二脱氧d -苏-胸苷)铂(II))。对淋巴瘤(BJAB),白血病(NALM-6)和黑素瘤细胞(Mel-HO)以及转染或耐药细胞系的凋亡途径进行了详细的体外研究。胸腺铂显着诱导凋亡反应,发现其与线粒体膜电位的丧失和胱天蛋白酶的活化有关。已证明该活性与具有死亡结构域(FADD)的Fas相关蛋白无关,但依赖于Bcl-2表达。结果,对于胸苷铂,可以指定线粒体的作用方式。此外,该化合物在对常见药物如柔红霉素和长春新碱具有抗性的细