Cells on hierarchically-structured platforms hosting functionalized nanoparticles

Biomater Sci. 2018 May 29;6(6):1469-1479. doi: 10.1039/c7bm00904f.

Abstract

In this work, we report on a novel approach to develop hierarchically-structured cell culture platforms incorporating functionalized gold nanoparticles (AuNPs). In particular, the hierarchical substrates comprise primary pseudo-periodic arrays of silicon microcones combined with a secondary nanoscale pattern of homogeneously deposited AuNPs terminated with bio-functional moieties. AuNPs with various functionalities (i.e. oligopeptides, small molecules and oligomers) were successfully attached onto the microstructures. Experiments with PC12 cells on hierarchical substrates incorporating AuNPs carrying the RGD peptide showed an impressive growth and NGF-induced differentiation of the PC12 cells, compared to that on the NP-free, bare, micropatterned substrates. The exploitation of the developed methodology for the binding of AuNPs as carriers of specific bio-functional moieties onto micropatterned culture substrates for cell biology studies is envisaged.

MeSH terms

  • Animals
  • Biocompatible Materials / chemistry*
  • Cell Differentiation
  • Cell Proliferation
  • Gold / chemistry*
  • Metal Nanoparticles / chemistry*
  • Metal Nanoparticles / ultrastructure
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Oligopeptides / chemistry
  • PC12 Cells
  • Rats
  • Silicon / chemistry*
  • Surface Properties

Substances

  • Biocompatible Materials
  • Oligopeptides
  • Gold
  • arginyl-glycyl-aspartic acid
  • Silicon