Silver-loaded biomimetic hydroxyapatite grafted poly(epsilon-caprolactone) composite nanofibers: a cytotoxicity study

J Biomed Nanotechnol. 2012 Feb;8(1):125-32. doi: 10.1166/jbn.2012.1359.

Abstract

We report on poly(epsilon-caprolactone) (PCL) containing biomimetic hydroxyapatite (HA) and hydroxyapatite-silver (HA-Ag) composite nanofibers prepared via an electrospinning process for the biomedical applications. The morphology, structure and thermal properties of the PCL, PCL/HA and PCL/HA-Ag composite nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) and thermogravimetry (TGA). SEM images revealed that the nanofibers were well-oriented and incorporated the HA-Ag nanoparticles well. The adhesion, viability and proliferation properties of composite nanofibers and differentiation of osteoblast were carried out to study the in vitro cell compatibility of the PCL/HA/HA-Ag composite nanofibers. Our results showed that pristine PCL and PCL/HA composite nanofibers scaffold can be utilized for the bone regeneration applications, however, PCL/HA-Ag composite nanofibers results in mild cytotoxic effect to human cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Animals
  • Biocompatible Materials / chemistry
  • Biocompatible Materials / toxicity*
  • Cattle
  • Cell Line
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Durapatite / chemistry
  • Durapatite / toxicity*
  • Elastic Modulus
  • Humans
  • Materials Testing
  • Nanofibers / chemistry*
  • Nanofibers / ultrastructure
  • Osteoblasts / cytology
  • Osteoblasts / drug effects
  • Polyesters / chemistry
  • Polyesters / toxicity*
  • Porosity
  • Silver / chemistry
  • Silver / toxicity*
  • Tissue Scaffolds / chemistry*

Substances

  • Biocompatible Materials
  • Polyesters
  • polycaprolactone
  • Silver
  • Durapatite