Copper(II) Complexes with Isomeric Morpholine-Substituted 2-Formylpyridine Thiosemicarbazone Hybrids as Potential Anticancer Drugs Inhibiting Both Ribonucleotide Reductase and Tubulin Polymerization: The Morpholine Position Matters.
Miljan N M MilunovicKaterina OhuiIuliana BesleagaTatsiana V PetrasheuskayaOrsolya DömötörÉva A EnyedyDenisa DarvasiovaPeter RaptaZuzana BarbierikováDaniel VeghSzilárd TóthJudit TóthNóra KucsmaGergely SzakácsAna Popovic-BijelicAyesha ZafarJóhannes ReynissonAnatoly D ShutalevRuoli BaiErnest HamelVladimir B ArionPublished in: Journal of medicinal chemistry (2024)
The development of copper(II) thiosemicarbazone complexes as potential anticancer agents, possessing dual functionality as inhibitors of R2 ribonucleotide reductase (RNR) and tubulin polymerization by binding at the colchicine site, presents a promising avenue for enhancing therapeutic effectiveness. Herein, we describe the syntheses and physicochemical characterization of four isomeric proligands H 2 L 3 - H 2 L 6 , with the methylmorpholine substituent at pertinent positions of the pyridine ring, along with their corresponding Cu(II) complexes 3 - 6 . Evidently, the position of the morpholine moiety and the copper(II) complex formation have marked effects on the in vitro antiproliferative activity in human uterine sarcoma MES-SA cells and the multidrug-resistant derivative MES-SA/Dx5 cells. Activity correlated strongly with quenching of the tyrosyl radical (Y • ) of mouse R2 RNR protein, inhibition of RNR activity in the cancer cells, and inhibition of tubulin polymerization. Insights into the mechanism of antiproliferative activity, supported by experimental results and molecular modeling calculations, are presented.
Keyphrases
- induced apoptosis
- multidrug resistant
- cell cycle arrest
- randomized controlled trial
- endothelial cells
- signaling pathway
- systematic review
- oxidative stress
- risk assessment
- escherichia coli
- gram negative
- molecular dynamics simulations
- density functional theory
- binding protein
- endoplasmic reticulum stress
- pseudomonas aeruginosa
- cystic fibrosis
- molecular dynamics
- protein protein
- acinetobacter baumannii
- oxide nanoparticles
- quantum dots
- aqueous solution
- energy transfer