Influence of chemical stability on the activity of the antimetastasis ruthenium compound NAMI-A

被引:225
作者
Sava, G
Bergamo, A
Zorzet, S
Gava, B
Casarsa, C
Cocchietto, M
Furlani, A
Scarcia, V
Serli, B
Iengo, E
Alessio, E
Mestroni, G
机构
[1] Callerio Fdn Onlus, I-34127 Trieste, Italy
[2] Univ Trieste, Dept Biomed Sci, I-34127 Trieste, Italy
[3] Univ Trieste, Dept Chem Sci, I-34127 Trieste, Italy
关键词
ruthenium; metabolism; tumour; metastasis; experimental;
D O I
10.1016/S0959-8049(01)00389-6
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
The influence of chemical stability on the antimetastatic ruthenium(III) compound imidazolium trans-imidazoletetrachlorodimethylsulphoxideruthenium(III) (NAMI-A) in aqueous solution was studied both in vitro and in vivo. The loss of dimethylsulphoxide (DMSO) ligand from the compound was tested by using a NAMI-A solution acidified with HCl at pH 3.0 and aged for 0, 4, 8 and 24 h prior to intraperitoneal (i.p.) injection into CBA mice bearing advanced MCa mammary carcinoma. The activity of NAMI-A on lung metastases showed no change even after the loss of DMSO ligand from up to 50% of the molecules. The reduction of NAMI-A did not modify the number of KB cells blocked in the S + G(2)M phases. independent or whether the reduction occurred outside the cells or after loading the cells with the compound prior to treatment with the reductants (ascorbic acid, glutathione or cysteine). In vivo. the complete reduction of NAMI-A with equivalent amounts of ascorbic acid, glutathione or cysteine prior to administration to mice bearing advanced MCa mammary carcinoma was more active than NAMI-A alone. The data show that NAMI-A. although undergoing a series of chemical modifications, maintains its antimetastatic activity in a broad range of experimental conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:427 / 435
页数:9
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