PUBLICATION

Mononuclear gold(III) complexes with phenanthroline ligands as efficient inhibitors of angiogenesis: A comparative study with auranofin and sunitinib

Authors
Pavic, A., Glišić, B.Đ., Vojnovic, S., Warżajtis, B., Savić, N.D., Antić, M., Radenković, S., Janjić, G.V., Nikodinovic-Runic, J., Rychlewska, U., Djuran, M.I.
ID
ZDB-PUB-170705-1
Date
2017
Source
Journal of inorganic biochemistry   174: 156-168 (Journal)
Registered Authors
Keywords
Angiogenesis, Cytotoxicity, Embryotoxicity, Gold(III) complexes, Phenanthroline
MeSH Terms
  • A549 Cells
  • Angiogenesis Inhibitors/chemistry*
  • Animals
  • Auranofin/chemistry*
  • HeLa Cells
  • Humans
  • Indoles/chemistry*
  • Matrix Metalloproteinase 2/chemistry*
  • Matrix Metalloproteinase 9/chemistry*
  • Molecular Docking Simulation*
  • Phenanthrolines/chemistry*
  • Pyrroles/chemistry*
  • Thioredoxin Reductase 1/chemistry*
  • Vascular Endothelial Growth Factor Receptor-2/chemistry*
  • Zebrafish
PubMed
28675847 Full text @ J. Inorg. Biochem.
Abstract
Gold(III) complexes with 1,7- and 4,7-phenanthroline ligands, [AuCl3(1,7-phen-κN7)] (1) and [AuCl3(4,7-phen-κN4)] (2) were synthesized and structurally characterized by spectroscopic (NMR, IR and UV-vis) and single-crystal X-ray diffraction techniques. In these complexes, 1,7- and 4,7-phenanthrolines are monodentatedly coordinated to the Au(III) ion through the N7 and N4 nitrogen atoms, respectively. In comparison to the clinically relevant anti-angiogenic compounds auranofin and sunitinib, gold(III)-phenanthroline complexes showed from 1.5- to 20-fold higher anti-angiogenic potential, and 13- and 118-fold lower toxicity. Among the tested compounds, complex 1 was the most potent and may be an excellent anti-angiogenic drug candidate, since it showed strong anti-angiogenic activity in zebrafish embryos achieving IC50 value (concentration resulting in an anti-angiogenic phenotype at 50% of embryos) of 2.89μM, while had low toxicity with LC50 value (the concentration inducing the lethal effect of 50% embryos) of 128μM. Molecular docking study revealed that both complexes and ligands could suppress angiogenesis targeting the multiple major regulators of angiogenesis, such as the vascular endothelial growth factor receptor (VEGFR-2), the matrix metalloproteases (MMP-2 and MMP-9), and thioredoxin reductase (TrxR1), where the complexes showed higher binding affinity in comparison to ligands, and particularly to auranofin, but comparable to sunitinib, an anti-angiogenic drug of clinical relevance.
Genes / Markers
Figures
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Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping