Indium(III) complexes with 2-acetylpyridine-derived thiosemicarbazones exhibit cytotoxic activity against human leukemia and solid tumor cell lines
作者:Alexandre A. Oliveira、Gabriele M.C. Perdigão、Jeferson G. da Silva、Elaine M. Souza-Fagundes、Heloisa Beraldo
DOI:10.1016/j.poly.2017.06.045
日期:2017.10
Complexes [In(2Ac4Ph)(2)]NO3 center dot H2O (1), [In(2Ac4mClPh)(2)]NO3 center dot 1.5H(2)O (2), [In(2Ac4pClPh)(2)]NO3 center dot 2H(2)O (3) and [In(2Ac4plPh)(2)]NO3 center dot H2O (4) were obtained with N(4)-phenyl-2-acetylpyridine thiosemicarbazone (H2Ac4Ph), and its N(4)-meta-chlorophenyl-(H2Ac4mClPh), N(4)-para-chlorophenyl-(H2Ac4pClPh) and N(4)-para-iodophenyl-(H2Ac4plPh) derivatives. The crystal structures of [In(2Ac4Ph)2]NO3 center dot MeOH (1a), [In(2Ac4mClPh)(2)]NO3 center dot EtOH center dot H2O (2a) and [In(2Ac4pClPh)(2)]center dot NO3 (3a) were determined. The cytotoxic effects of the thiosemicarbazone ligands and of complexes (1-4) were evaluated against HL-60, Jurkat and THP-1 leukemia cells and against MCF-7, MDA-MB-231 and HCT-116 solid tumor cells, as well as against mammalian healthy Vero cells. Upon coordination to indium(III) cytotoxicity increased in several cases. In addition, complex (1) was active in sub-micromolar doses against all tested cell lineages, with selectivity indexes (SI = IC50 (vero)/lC(50) tumor cell) ranging from 3 (against THP-1 cells) to 144 (against HCT-116 cells). (C) 2017 Elsevier Ltd. All rights reserved.