Primary cortical neurons on PMCS TiO2 films towards bio-hybrid memristive device: A morpho-functional study

Biophys Chem. 2017 Oct:229:115-122. doi: 10.1016/j.bpc.2017.04.010. Epub 2017 Apr 26.

Abstract

We report a comprehensive study of the biocompatibility and neurocompatibility of titanium dioxide films (TiO2) prepared by Pulsed Microplasma Cluster Source (PMCS). This technique uses supersonic pulsed beams seeded by clusters of the metal oxide synthesized in a plasma discharge. The final stoichiometry of the TiO2 thin films is tuned changing the gas mixture, achieving stoichiometric or oxygen overstoichiometric films. All the films showed consistent biocompatibility and a spontaneous absorption of poly-d-lysine (PDL) that favors the adhesion and growth of murine cortical neurons. Moreover, the bioelectrical activity of the neuronal culture grown on the TiO2 film can be modulated by changing the chemistry of the surface. This work paves the way to develop a bio-hybrid neuromorphic device, where viable nerve cells are grown directly over a titanium dioxide film showing a network of memristors.

Keywords: Bio-hybrid device; Memristors; Murine cortical neurons; PMCS technique; Patch-clamp; TiO(2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Action Potentials / drug effects
  • Adsorption
  • Animals
  • Biocompatible Materials / chemistry*
  • Biocompatible Materials / pharmacology
  • Cell Adhesion / drug effects
  • Cell Proliferation / drug effects
  • Cells, Cultured
  • HeLa Cells
  • Humans
  • MCF-7 Cells
  • Mice
  • Microscopy, Atomic Force
  • Neurons / cytology
  • Neurons / metabolism
  • Patch-Clamp Techniques
  • Polylysine / chemistry
  • Polylysine / metabolism
  • Surface Properties
  • Titanium / chemistry*

Substances

  • Biocompatible Materials
  • titanium dioxide
  • Polylysine
  • Titanium