[EN] THIOSEMICARBAZONE COMPOUNDS AND USE THEREOF<br/>[FR] COMPOSÉS THIOSEMICARBAZONES ET LEUR UTILISATION
申请人:RICHARDSON DESI RAYMOND
公开号:WO2010000008A1
公开(公告)日:2010-01-07
A method of treating a proliferative disease in a vertebrate, the method comprising administering to the vertebrate a therapeutically effective amount of at least one compound of formula (I) (I) wherein R1 is selected from H, C1-6 alkyl, C2-6 alkenyl and phenyl; R2 is selected from H, C1-6 alkyl, C2-6 alkenyl and phenyl; wherein R1 and R2 are the same or different, or a salt, hydrate, or iron complex thereof, or a pharmaceutical composition comprising said compound, salt, hydrate or iron complex and a pharmaceutically acceptable carrier, diluent or excipient.
Novel biotin-functionalized lipidic nanocarriers for encapsulating BpT and Bp4eT iron chelators: evaluation of potential anti-tumour efficacy by in vitro, in vivo and pharmacokinetic studies in A549 mice models
作者:Shweta Dumoga、Namit Dey、Anivind Kaur、Surendra Singh、Anil K. Mishra、Dipti Kakkar
DOI:10.1039/c6ra03079c
日期:——
This work proposes a novel strategy for delivery of iron chelators to the tumour cells which is exemplified in A549 mice models by using lipidic nanocarriers and introducing biotin based targeting.
Synthesis, X-ray crystal structure, DNA/protein binding, DNA cleavage and cytotoxicity studies of N(4) substituted thiosemicarbazone based copper(II)/nickel(II) complexes
(BSA). A DNA cleavage study showed that the complexes cleaved DNA without any external agent. The alterations in the secondary structure of the protein by the ligand and complexes were confirmed by synchronous fluorescence spectroscopic studies. Spectral evidences also showed good binding property of the complexes with the protein. An in vitro cytotoxicitystudy of the complexes found significant activity
Improved cytotoxicity of pyridyl-substituted thiosemicarbazones against MCF-7 when used as metal ionophores
作者:Fady N. Akladios、Scott D. Andrew、Christopher J. Parkinson
DOI:10.1007/s10534-015-9905-1
日期:2016.2
Zinc is the second most abundant transition metal in the human body, between 3 and 10 % of human genes encoding for zinc binding proteins. We have investigated the interplay of reactive oxygen species and zinc homeostasis on the cytotoxicity of the thiosemicarbazone chelators against the MCF-7 cell line. The cytotoxicity of thiosemicarbazone chelators against MCF-7 can be improved through supplementation of ionic zinc provided the zinc ion is at a level exceeding the thiosemicarbazone concentration. Elimination of the entire cell population can be accomplished with this regime, unlike the plateau of cytotoxicity observed on thiosemicarbazone monotherapy. The cytotoxic effects of copper complexes of the thiosemicarbazone are not enhanced by zinc supplementation, displacement of copper from the complex being disfavoured. Treatment of MCF-7 with uncomplexed thiosemicarbazone initiates post G1 blockade alongside the induction of apoptosis, cell death being abrogated through subsequent supplementation with zinc ion after drug removal. This would implicate a metal depletion mechanism in the cytotoxic effect of the un-coordinated thiosemicarbazone. The metal complexes of the species, however, fail to initiate similar G1 blockade and apparently exert their cytotoxic effect through generation of reactive oxygen species, suggesting that multiple mechanisms of cytotoxicity can be associated with the thiosemicarbazones dependant on the level of metal ion association.
Copper(II) complexes of 2-benzoylpyridine 4N-substituted thiosemicarbazones
作者:Douglas X. West、Janeice S. Ives、Jacqueline Krejci、Michelle M. Salberg、Terri L. Zumbahlen、Gordon A. Bain、Anthony E. Liberta、Jesus Valdes-Martinez、Simon Hernandez-Ortiz、Ruben A. Toscano
DOI:10.1016/0277-5387(95)00010-p
日期:1995.8
2-Benzoylpyridine N-4-substituted thiosemicarbazones commonly coordinate as neutral tridentate ligands to give five coordinate [Cu(HL)Cl-2] complexes when prepared in boiling isopropanol. However, when prepared in boiling ethanol, the anion (loss of the N-3-hydrogen) coordinates as a tridentate ligand to give [CuLCl] complexes. Representative crystal structures of both stoichiometries have been determined. Spectral characterization of both the 2-benzoylpyridine N-4-substituted thiosemicarbazones and their copper(II) complexes includes IR, UV-vis, EPR and NMR studies. Growth inhibition studies of the thiosemicarbazones and their complexes were performed against two human pathogenic fungi.