Genotoxicity of copper oxide nanoparticles in Drosophila melanogaster

Mutat Res Genet Toxicol Environ Mutagen. 2015 Sep:791:1-11. doi: 10.1016/j.mrgentox.2015.07.006. Epub 2015 Jul 23.

Abstract

Copper oxide nanoparticles (CuONPs) are used as semiconductors, catalysts, gas sensors, and antimicrobial agents. We have used the comet and wing-spot assays in Drosophila melanogaster to assess the genotoxicity of CuONPs and ionic copper (CuSO4). Lipid peroxidation analysis was also performed (Thiobarbituric Acid Assay, TBARS). In larval hemocytes, both CuONPs and CuSO4 caused significant dose-dependent increases in DNA damage (comet assay). In the wing-spot assay, an increase in the frequency of mutant spots was observed in the wings of the adults; CuONPs were more effective than was CuSO4. Both agents induced TBARS; again, CuONPs were more active than was CuSO4. The results indicate that CuONPs are genotoxic in Drosophila, and these effects may be mediated by oxidative stress. Most of the effects appear to be related to the presence of copper ions.

Keywords: Comet assay; DNA damage; Hemocytes; Malondialdehyde; Mitotic recombination; Wing-spot test.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Comet Assay / methods
  • Copper / toxicity*
  • Copper Sulfate / toxicity
  • DNA Breaks
  • Drosophila melanogaster / anatomy & histology
  • Drosophila melanogaster / drug effects*
  • Drosophila melanogaster / genetics
  • Larva / drug effects
  • Lipid Peroxidation / drug effects
  • Metal Nanoparticles / toxicity*
  • Mutagens / toxicity*
  • Wings, Animal / drug effects*

Substances

  • Mutagens
  • Copper
  • Copper Sulfate
  • cupric oxide