Biological activity of a series of cisplatin-based aliphatic bis(carboxylato) Pt(IV) prodrugs: How long the organic chain should be?
作者:Ilaria Zanellato、Ilaria Bonarrigo、Donato Colangelo、Elisabetta Gabano、Mauro Ravera、Manuela Alessio、Domenico Osella
DOI:10.1016/j.jinorgbio.2014.07.018
日期:2014.11
The biological properties of a series of cisplatin-based Pt(IV) prodrug candidates, namely trans,cis,cis-[Pt(carboxylato)2Cl2(NH3)2], where carboxylato = CH3(CH2)nCOO− [(1), n = 0; (2), n = 2; (3), n = 4; (4), n = 6] having a large interval of lipophilicity are discussed. The stability of the complexes was tested in different pH conditions (i.e. from 1.0 to 9.0) to simulate the hypothetical conditions
一系列基于顺铂的Pt(IV)前药候选物的生物学特性,即反式,顺式,顺式-[Pt(羧基)2 Cl 2(NH 3)2 ],其中羧基= CH 3(CH 2)n COO − [(1),n = 0; (2),n = 2; (3),n = 4;(4),n = 6]讨论了具有大的亲脂性间隔。配合物的稳定性在不同的pH条件下进行了测试(即(从1.0到9.0),以模拟口服给药的假设条件,显示出较高的稳定性(> 90%)。在抗坏血酸的存在下证明了向其活性Pt(II)代谢物的转化,具有拟一级动力学,其半衰期随着羧酸链长的增加而平稳降低。他们的抗增殖活性已在一大批人类癌细胞系中进行了体外评估。正如预期的那样,效力随着链长的增加而增加:3和4分别在大约一两个数量级的所有细胞系上比顺铂具有更高的活性。与非肿瘤细胞相比,两种复合物在顺铂耐药细胞系上也都保持了活性,并且显示出选择性的逐步提高。对多细胞肿瘤球体(MCTSs