期刊
JOURNAL OF INORGANIC BIOCHEMISTRY
卷 88, 期 3-4, 页码 260-267出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/S0162-0134(01)00360-9
关键词
anticancer complexes; bioreduction; albumin; cysteine; platinum(IV)
The platinum(IV) complexes: [PtCl4(en)], cis,trans-[PtCl3(OAc)(2)(en)]. cis.trans-[PtCl2(OH)(2)(en)] and trans-[Pt(OH)(2)(ethmal)(en)], encompassing a range of reduction potentials and their platinum(II) analogue [PtCl,(en)], have been assayed for their protein binding ability in the presence of albumin, albumin and L-Cysteine and RPMI 1640 tissue culture medium supplemented with foetal calf serum (RPMI/FCS). cis,trans-[PtCl4(en)] exhibited significant protein binding in all three experiments, in a similar fashion to the platinum(II) complex, presumably as a consequence of its rapid reduction. The remaining three platinum(IV) complexes displayed little if any protein binding, with the greatest amount of binding observed in the RPMI/FCS experiment. The extent of binding in the RPMI/FCS correlated with the reduction potentials of the complexes, with the most readily reduced species binding to the greatest extent. (C) 2002 Elsevier Science Inc. All rights reserved.
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