Controlled protein absorption and cell adhesion on polymer-brush-grafted poly(3,4-ethylenedioxythiophene) films

ACS Appl Mater Interfaces. 2013 Jun 12;5(11):4536-43. doi: 10.1021/am400135c. Epub 2013 Apr 10.

Abstract

Tailoring the surface of biometallic implants with protein-resistant polymer brushes represents an efficient approach to improve the biocompability and mechanical compliance with soft human tissues. A general approach utilizing electropolymerization to form initiating group (-Br) containing poly(3,4-ethylenedioxythiophen)s (poly(EDOT)s) is described. After the conducting polymer is deposited, neutral poly((oligo(ethylene glycol) methacrylate), poly(OEGMA), and zwitterionic poly([2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide), poly(SBMA), brushes are grafted by surface-initiated atom transfer radical polymerization. Quartz crystal microbalance (QCM) experiments confirm protein resistance of poly(OEGMA) and poly(SBMA)-grafted poly(EDOT)s. The protein binding properties of the surface are modulated by the density of polymer brushes, which is controlled by the feed content of initiator-containing monomer (EDOT-Br) in the monomer mixture solution for electropolymerization. Furthermore, these polymer-grafted poly(EDOT)s also prevent cells to adhere on the surface.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biocompatible Materials / chemistry*
  • Biosensing Techniques / methods*
  • Bridged Bicyclo Compounds, Heterocyclic / chemistry*
  • Bromine / chemistry
  • Cell Adhesion / physiology*
  • Dielectric Spectroscopy
  • Enzymes / chemistry
  • Humans
  • Mice
  • Microscopy, Atomic Force
  • NIH 3T3 Cells / cytology
  • Nuclear Magnetic Resonance, Biomolecular
  • Polymers / chemistry*
  • Prostheses and Implants
  • Proteins / chemistry*
  • Quartz Crystal Microbalance Techniques
  • Trace Elements / chemistry

Substances

  • Biocompatible Materials
  • Bridged Bicyclo Compounds, Heterocyclic
  • Enzymes
  • Polymers
  • Proteins
  • Trace Elements
  • poly(3,4-ethylene dioxythiophene)
  • Bromine