Adhesion, vitality and osteogenic differentiation capacity of adipose derived stem cells seeded on nitinol nanoparticle coatings

PLoS One. 2013;8(1):e53309. doi: 10.1371/journal.pone.0053309. Epub 2013 Jan 7.

Abstract

Autologous cells can be used for a bioactivation of osteoimplants to enhance osseointegration. In this regard, adipose derived stem cells (ASCs) offer interesting perspectives in implantology because they are fast and easy to isolate. However, not all materials licensed for bone implants are equally suited for cell adhesion. Surface modifications are under investigation to promote cytocompatibility and cell growth. The presented study focused on influences of a Nitinol-nanoparticle coating on ASCs. Possible toxic effects as well as influences on the osteogenic differentiation potential of ASCs were evaluated by viability assays, scanning electron microscopy, immunofluorescence and alizarin red staining. It was previously shown that Nitinol-nanoparticles exert no cell toxic effects to ASCs either in soluble form or as surface coating. Here we could demonstrate that a Nitinol-nanoparticle surface coating enhances cell adherence and growth on Nitinol-surfaces. No negative influence on the osteogenic differentiation was observed. Nitinol-nanoparticle coatings offer new possibilities in implantology research regarding bioactivation by autologous ASCs, respectively enhancement of surface attraction to cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adipose Tissue / cytology*
  • Alloys / adverse effects*
  • Alloys / chemistry
  • Animals
  • Cell Adhesion / drug effects
  • Cell Differentiation / drug effects
  • Cell Line
  • Cell Proliferation / drug effects
  • Cells, Cultured
  • Coated Materials, Biocompatible / adverse effects*
  • Coated Materials, Biocompatible / chemistry
  • Humans
  • Mice
  • Nanoparticles / adverse effects*
  • Nanoparticles / chemistry
  • Osteogenesis* / drug effects
  • Stem Cells / cytology*
  • Stem Cells / drug effects
  • Tissue Scaffolds / adverse effects
  • Tissue Scaffolds / chemistry

Substances

  • Alloys
  • Coated Materials, Biocompatible
  • nitinol

Grants and funding

The study has been funded by the German Research Foundation within the Collaborative Research Centre TransRegio 37 ‘Micro- and Nanosystems in Medicine – Reconstruction of biologic Functions’. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.