Kinetics of binding properties of 5′-GMP with cisplatin under simulated physiological conditions by capillary electrophoresis

被引:37
作者
Zenker, A
Galanski, MS
Bereuter, TL
Keppler, BK [1 ]
Lindner, W
机构
[1] Univ Vienna, Inst Inorgan Chem, Wahringer Str 42, A-1090 Vienna, Austria
[2] Univ Vienna, Inst Analyt Chem, A-1090 Vienna, Austria
来源
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES | 2000年 / 745卷 / 01期
关键词
cisplatin; kinetics; nucleoside monophosphates; capillary zone electrophoresis; methionine; cysteine;
D O I
10.1016/S0378-4347(00)00096-7
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Kinetics of the adduct formation of cisplatin and its hydrolysis products with 5'-GMP was investigated using capillary electrophoresis (CE) under 'simulated physiological conditions'. Therefore, chloride ion and phosphate concentration as well as the pH were chosen comparable to intracellular conditions. Furthermore, the influence of the sulfur-containing alpha-amino acids L-methionine and L-cysteine on the kinetics of the adduct formation have been studied. Both amino acids increased the half-time of the reaction significantly but did not influence the formation of the major adduct cis-[Pt(NH3)(2)(N7-GMP)(2)](2-). The reaction products were separated using CE, and characterised using UV and NMR spectroscopy. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:211 / 219
页数:9
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