A Comparative Study on the Complexation of the Anticancer Iron Chelator VLX600 with Essential Metal Ions
作者:Vivien Pósa、Anja Federa、Klaudia Cseh、Dominik Wenisch、Gabriella Spengler、Nóra V. May、Norbert Lihi、Gergely F. Samu、Michael A. Jakupec、Bernhard K. Keppler、Christian R. Kowol、Éva A. Enyedy
DOI:10.1021/acs.inorgchem.3c03259
日期:2024.2.5
As cancer cells exhibit an increased uptake of iron, targeting the interaction with iron has become a straightforward strategy in the fight against cancer. This work comprehensively characterizes the chemical properties of 6-methyl-3-(2E)-2-[1-(2-pyridinyl)ethylidene]hydrazino}-5H-[1,2,4]triazino[5,6-b]indole (VLX600), a clinically investigated iron chelator, in solution. Its protonation processes
随着癌细胞对铁的吸收增加,靶向与铁的相互作用已成为对抗癌症的直接策略。该工作全面表征了6-甲基-3-(2 E )-2-[1-(2-吡啶基)亚乙基]肼基}-5 H- [1,2,4]三嗪基[5,6 - b ]吲哚 (VLX600),一种经过临床研究的铁螯合剂,溶液形式。使用紫外可见光、电子顺磁共振、核磁共振波谱和计算方法研究了其质子化过程、亲脂性和膜渗透性以及与必需金属离子的络合。形成常数显示 pH 7.4 时金属结合亲和力的顺序如下:Cu(II) > Fe(II) > Zn(II)。 VLX600(记为HL)的结构及其金属配合物[Cu(II)(LH)Cl 2 ]、[Cu(II)(L)(CH 3 OH)Cl]、[Zn(II)通过单晶X射线衍射阐明了(LH)Cl 2 ]和[Fe(II)(LH) 2 ](NO 3 ) 2 。通过循环伏安法表征的铁配合物的氧化还原性质表明,VLX600 对 Fe(II)