Effect of copper on the up-regulation/down-regulation of genes, cytotoxicity and ion dissolution for mesoporous bioactive glasses

Biomed Mater. 2017 Aug 9;12(4):045020. doi: 10.1088/1748-605X/aa7664.

Abstract

In the present study, copper-based (25 - x)CaO - xCuO -10P2O5 - 5B2O3 - 60SiO2 (x = 2.5, 5, 7.5, 10 mol%) mesoporous bioactive glasses (MBGs) were synthesized using the sol-gel technique with cetyltrimethyl ammonium bromide as the structure-directing agent. The live-dead cell count and cytocompatibility of MBGs for J774A.1 murine macrophages have also been investigated for different concentrations of MBGs. The ionic dissolution profile for Ca, P and Si has been evaluated in the simulated body fluid. The effect of copper content as well as the ionic dissolution products on the up-regulation and down-regulation of TGIF-2, HDAC-4, Smurf-1, mir-30c and mir-130a genes for the murine model are investigated using reverse transcription-polymerase chain reaction. Silica and calcium release follows a similar trend as followed by gene up-regulation of TGIF-2, HDAC-4 and mir-30c genes. This indicates that silica and calcium release influence gene expression.

MeSH terms

  • Animals
  • Biocompatible Materials / pharmacology
  • Calcium / metabolism
  • Cell Line
  • Ceramics / chemistry*
  • Copper / chemistry*
  • Dose-Response Relationship, Drug
  • Down-Regulation
  • Gene Expression Regulation / drug effects
  • Glass / chemistry*
  • Histone Deacetylases / metabolism
  • Homeodomain Proteins / metabolism
  • Ions
  • Macrophages / metabolism*
  • Materials Testing
  • Mice
  • MicroRNAs / metabolism
  • Osteoblasts / drug effects
  • Phase Transition
  • Porosity
  • Repressor Proteins / metabolism
  • Reverse Transcriptase Polymerase Chain Reaction
  • Solubility
  • Up-Regulation

Substances

  • Biocompatible Materials
  • Homeodomain Proteins
  • Ions
  • MicroRNAs
  • Mirn30d microRNA, mouse
  • Repressor Proteins
  • TG-interacting factor 2, mouse
  • bioactive glass 45S5
  • Copper
  • Hdac5 protein, mouse
  • Histone Deacetylases
  • Calcium