Green synthesis of anisotropic zinc oxide nanoparticles with antibacterial and cytofriendly properties

Microb Pathog. 2018 Feb:115:57-63. doi: 10.1016/j.micpath.2017.12.039. Epub 2017 Dec 14.

Abstract

Zinc oxide nanoparticles (ZnONPs) exhibit abundant biomedical applications. Anisotropic ZnONPs with a defined shape and size were synthesized using Bacillus megaterium (NCIM 2326) cell free extract as a bio-reductant. The study investigated the multidimensional effect of ZnONPs on Helicobacter pylori strains and assessed its biosafety in normal human mesenchymal stem cells (hMSc). The highly stable ZnONPs were produced using B. megaterium and Zinc nitrate as a precursor. The phase of ZnONPs formation and structural characterization were performed by UV- visible (UV-Vis), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and Field Emission Scanning electron microscopy (FESEM) analysis. Furthermore, the ZnONPs exhibited higher biocompatibility against human mesenchymal stem cells (hMSC) and proved to be potentially safe in mammalian cells. Corroborating the current investigation, we described the anti-H. Pylori dosage of ZnONPs was safe to hMSC and could efficiently use as nano-antibiotic.

Keywords: Antibacterial mechanism; Bacillus megaterium; Cytotoxicity; Helicobacter pylori; Nanoparticles.

MeSH terms

  • Anisotropy
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Apoptosis / drug effects
  • Bacillus megaterium / metabolism
  • Cell Membrane / drug effects
  • Green Chemistry Technology / methods*
  • Helicobacter pylori / drug effects
  • Humans
  • Materials Testing
  • Mesenchymal Stem Cells / drug effects
  • Metal Nanoparticles / chemistry*
  • Metal Nanoparticles / ultrastructure
  • Microbial Sensitivity Tests
  • Particle Size
  • Reactive Oxygen Species / metabolism
  • Zinc Oxide / metabolism
  • Zinc Oxide / pharmacology*

Substances

  • Anti-Bacterial Agents
  • Reactive Oxygen Species
  • Zinc Oxide