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Updated: Aug 19, 2025
Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay
Published on: November 10, 2013
Evaluation of cytotoxicity and genotoxicity of a novel oxovanadium complex with orotate
Pietra Stefany da Silva Gomes1, Washington Wilson da Silva1, Gabriela de Cássia Gasparoti1
1UNIARA - University of Araraquara, Department of Biological Sciences and Health, CEP 14801-340, Araraquara, São Paulo, Brazil.
Abstract:
The development of new drugs based on metal complexes requires a detailed analysis of their biological endpoints. In this study, we report the genotoxic profile and influence on cell proliferation and death of the oxovanadium(IV) complex with orotic acid ([VO(C5H4N2O4)2], VO(oro)). Human hepatocellular carcinoma cells (HepG2) were the most sensitive tumor cells to VO(oro), which interfered with the integrity of cell membranes and proliferative capacity in a dose-dependent manner, inducing cell death by apoptosis. Regarding genotoxicity, VO(oro) did not induce considerable levels of DNA damage in HepG2 cells (comet test) and gene mutations (Ames test). However, it caused a statistically significant increase in the frequency of micronuclei at the highest concentration tested (12.5 µmol.L-1), indicating aneuploidy and clastogenicity. The data presented here provide information on various biological aspects of the VO(oro) complex, which may allow the elucidation of its mechanism of action as a possible therapeutic agent.
Insights
The oxovanadium(IV) complex with orotic acid (VO(oro)) shows therapeutic potential by inducing apoptosis in HepG2 liver cancer cells. While not significantly genotoxic, it caused micronuclei formation, suggesting aneuploidy.
Area of Science:
- Medicinal Chemistry
- Toxicology
- Cancer Biology
Background:
- Metal complexes are investigated for drug development.
- Understanding biological endpoints like genotoxicity and cell death is crucial.
- Oxovanadium(IV) complexes show promise as therapeutic agents.
Purpose of the Study:
- To evaluate the genotoxic profile of the oxovanadium(IV) complex with orotic acid (VO(oro)).
- To assess the influence of VO(oro) on cell proliferation and death in cancer cells.
- To explore the potential of VO(oro) as a therapeutic agent.
Main Methods:
- Human hepatocellular carcinoma cells (HepG2) were used.
- Cell proliferation, membrane integrity, and cell death (apoptosis) were analyzed.
- Genotoxicity was assessed using the comet test, Ames test, and micronucleus assay.
Main Results:
- VO(oro) demonstrated dose-dependent effects on HepG2 cells, inhibiting proliferation and inducing apoptosis.
- The complex did not cause significant DNA damage (comet test) or gene mutations (Ames test).
- A significant increase in micronuclei frequency was observed at high concentrations, indicating aneuploidy and clastogenicity.
Conclusions:
- VO(oro) exhibits anti-cancer properties by inducing apoptosis in HepG2 cells.
- The genotoxic profile suggests potential for therapeutic use, despite some evidence of aneuploidy.
- Further research into VO(oro)'s mechanism of action is warranted for therapeutic development.
