Novel Copper-Containing Cytotoxic Agents Based on 2-Thioxoimidazolones.
J Med Chem
; 63(21): 13031-13063, 2020 11 12.
Article
in En
| MEDLINE
| ID: mdl-32985193
A series of 73 ligands and 73 of their Cu+2 and Cu+1 copper complexes with different geometries, oxidation states of the metal, and redox activities were synthesized and characterized. The aim of the study was to establish the structure-activity relationship within a series of analogues with different substituents at the N(3) position, which govern the redox potentials of the Cu+2/Cu+1 redox couples, ROS generation ability, and intracellular accumulation. Possible cytotoxicity mechanisms, such as DNA damage, DNA intercalation, telomerase inhibition, and apoptosis induction, have been investigated. ROS formation in MCF-7 cells and three-dimensional (3D) spheroids was proven using the Pt-nanoelectrode. Drug accumulation and ROS formation at 40-60 µm spheroid depths were found to be the key factors for the drug efficacy in the 3D tumor model, governed by the Cu+2/Cu+1 redox potential. A nontoxic in vivo single-dose evaluation for two binuclear mixed-valence Cu+1/Cu+2 redox-active coordination compounds, 72k and 61k, was conducted.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Copper
/
Coordination Complexes
/
Imidazoles
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
J Med Chem
Journal subject:
QUIMICA
Year:
2020
Type:
Article
Affiliation country:
Russia