Abstract：
BACKGROUND:Gold(I) and platinum(II) d(10) and d(8) electronic complexes such as (Au(PPh(2)CH(2)CH(2)PPh(2))(2))Cl and cisplatin, ((H(3)N)(2)PtCl(2)), possess strong antineoplastic activities. Almost no information is available regarding the anticancer activity of isoelectronic silver(I) d(10) complexes. This study examined the cytotoxicity of stable water-soluble silver(I) carboxylates. The results were related to the cytotoxicity of cisplatin and (Au(PPh(2)CH(2)CH(2)PPh(2))(2))Cl. MATERIALS AND METHODS:The silver carboxylates (AgO(2)CCH(2)OCH(3)), 1, (AgO(2)C-CH(2)OCH(2)CH(2)OCH(3)), 2, and (AgO(2)CCH(2)OCH(2)CH(2)OCH(2)CH(2)OCH(3)), 3, were investigated. Cytotoxicity tests were performed on the HeLa (human cervix epitheloid) cancer cell line, resting lymphocytes and PHA (phytohaemagglutinin)-stimulated lymphocyte cultures. Cell survival was measured by means of the colorometric 3-(4,5-dimethylthiazol-2-yl)-diphenyltetrazolium bromide (MTT) assay. RESULTS:The IC(50) (50% cell growth inhibition) values of 1-3 in the HeLa cells varied between 2.6 and 6.1 μmol dm(-3) with being 1 the most cytotoxic silver complex. Drug activity was inversely proportional to the length of the carboxylato chain length. Complexes 1-3 were 3-5 times more cytotoxic against the HeLa cancer cells than against the PHA stimulated lymphocyte cultures. CONCLUSION:A drug activity-structure relationship exists in that short-chain silver carboxylates are more cytotoxic than long-chain silver carboxylates, but silver d(10) complexes are one order of magnitude less cytotoxic than platinum(II) d(8) or gold(I) d(10) complexes.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Fourie E,Erasmus E,Swarts JC,Tuchscherer A,Jakob A,Lang H,Joone GK,Van Rensburg CEsubject
Has Abstractpub_date
2012-02-01 00:00:00pages
519-22issue
2eissn
0250-7005issn
1791-7530pii
32/2/519journal_volume
32pub_type
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doi：
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