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Dinuclear orthometallated gold(I)-gold(III) anticancer complexes with potent in vivo activity through an ROS-dependent mechanism.
Metallomics ( IF 2.9 ) Pub Date : 2021-07-15 , DOI: 10.1093/mtomcs/mfab039
Nedaossadat Mirzadeh 1 , Srinivasa Reddy Telukutla 1 , Rodney Luwor 2 , Steven Privér 1 , Ganga Reddy Velma 1 , Ranjith Kumar Jakku 1 , Stephens Andrew N 3 , Magdalena Plebanski 4 , Hartinger Christian 5 , Suresh Bhargava 1
Affiliation  

Increasingly explored over the last decade, gold complexes have shown great promise in the field of cancer therapeutics. A major obstacle to their clinical progression has been their lack of in vivo stability, particularly for gold(III) complexes, which often undergo a facile reduction in the presence of biomolecules such as glutathione. Herein, we report a new class of promising anticancer gold(I)-gold(III) complexes with the general formula [XAuI(μ-2-C6F4PPh2)(κ2-2-C6F4PPh2)AuIIIX] [X = Cl (1), Br (2), NO3 (3)] which feature two gold atoms in different oxidation states (I and III) in a single molecule. Interestingly, gold(I)-gold(III) complexes (1-3) are stable against glutathione reduction under physiological-like conditions. In addition, complexes 1-3 exhibit significant cytotoxicity (276-fold greater than cisplatin) toward the tested cancer cells compared to the noncancerous cells. Moreover, the gold(I)-gold(III) complexes do not interact with DNA-like cisplatin but target cellular thioredoxin reductase, an enzyme linked to the development of cisplatin drug resistance. Complexes 1-3 also showed potential to inhibit cancer and endothelial cell migration, as well as tube formation during angiogenesis. In vivo studies in a murine HeLa xenograft model further showed the gold compounds may inhibit tumor growth on par clinically used cisplatin, supporting the significant potential this new compound class has for further development as cancer therapeutic.

中文翻译:

双核邻金属化金 (I)-金 (III) 抗癌复合物通过 ROS 依赖性机制具有有效的体内活性。

在过去十年中越来越多地探索,金配合物在癌症治疗领域显示出巨大的前景。其临床进展的一个主要障碍是它们缺乏体内稳定性,特别是对于金 (III) 复合物,其通常在谷胱甘肽等生物分子的存在下容易减少。在此,我们报告了一类新的有希望的抗癌金(I)-金(III)配合物,其通式为[XAuI(μ-2-C6F4PPh2)(κ2-2-C6F4PPh2)AuIIIX] [X = Cl(1), Br (2), NO3 (3)] 在单个分子中具有两个不同氧化态(I 和 III)的金原子。有趣的是,金 (I)-金 (III) 复合物 (1-3) 在类似生理的条件下对谷胱甘肽还原是稳定的。此外,与非癌细胞相比,复合物 1-3 对受试癌细胞表现出显着的细胞毒性(比顺铂大 276 倍)。此外,金(I)-金(III)复合物不与 DNA 样顺铂相互作用,而是靶向细胞硫氧还蛋白还原酶,这是一种与顺铂耐药性发展相关的酶。复合物 1-3 还显示出抑制癌症和内皮细胞迁移以及血管生成过程中管形成的潜力。在小鼠 HeLa 异种移植模型中进行的体内研究进一步表明,金化合物可以抑制肿瘤生长,与临床使用的顺铂相当,这支持了这种新化合物类别作为癌症治疗剂进一步发展的巨大潜力。金(I)-金(III)复合物不与DNA样顺铂相互作用,而是靶向细胞硫氧还蛋白还原酶,一种与顺铂耐药性发展相关的酶。复合物 1-3 还显示出抑制癌症和内皮细胞迁移以及血管生成过程中管形成的潜力。在小鼠 HeLa 异种移植模型中进行的体内研究进一步表明,金化合物可以抑制肿瘤生长,与临床使用的顺铂相当,这支持了这种新化合物类别作为癌症治疗剂进一步发展的巨大潜力。金(I)-金(III)复合物不与DNA样顺铂相互作用,而是靶向细胞硫氧还蛋白还原酶,一种与顺铂耐药性发展相关的酶。复合物 1-3 还显示出抑制癌症和内皮细胞迁移以及血管生成过程中管形成的潜力。在小鼠 HeLa 异种移植模型中进行的体内研究进一步表明,金化合物可以抑制肿瘤生长,与临床使用的顺铂相当,这支持了这种新化合物类别作为癌症治疗剂进一步发展的巨大潜力。
更新日期:2021-07-15
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