title: Synthesis and characterization of new copper thiosemicarbazone complexes with an ONNS quadridentate system: cell growth inhibition, S-phase cell cycle arrest and proapoptotic activities on cisplatin-resistant neuroblastoma cells.
abstract: Two new copper thiosemicarbazone complexes with an ONNS quadridentate system were synthesized and evaluated for anticancer activity on cisplatin-resistant neuroblastoma cells. Among these two copper complexes, the substituted 8-hydroxyquinoline-2-carboxaldehyde-4,4-dimethyl-3-thiosemicarbazide (CuHQDMTS) exhibited stronger cell growth inhibition activity than the unsubstituted copper 8-hydroxyquinoline-2-carboxaldehyde thiosemicarbazide complex (CuHQTS). Both CuHQTS and CuHQDMTS showed dose-dependent cell growth inhibition, cell cycle arrest and apoptosis induction activities on the SK-N-DZ neuroblastoma cells. Increased expression of p53 protein molecules was detected in the SK-N-DZ cells treated with CuHQTS. The data obtained in this study suggest that CuHQDMTS and CuHQTS hold potential as new, effective drugs for treatment of refractory neuroblastoma in children.
authors.affiliation: Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, MI 48201, USA.
authors.forename: Haiyuan
authors.initials: H
authors.lastname: Zhang
authors.forename: Ronald
authors.initials: R
authors.lastname: Thomas
authors.forename: David
authors.initials: D
authors.lastname: Oupicky
authors.forename: Fangyu
authors.initials: F
authors.lastname: Peng
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002455:Cell Division / Q000187:drug effects*; D002460:Cell Line; D002945:Cisplatin / Q000494:pharmacology*; D003300:Copper / Q000737:chemistry*; D019008:Drug Resistance, Neoplasm; D006801:Humans; D009447:Neuroblastoma / Q000473:pathology*; D016196:S Phase / Q000187:drug effects*; D013057:Spectrum Analysis / Q000379:methods; D013882:Thiosemicarbazones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: D013882:Thiosemicarbazones; D003300:Copper; D002945:Cisplatin