Enhanced protein adsorption and patterning on nanostructured latex-coated paper

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Helka Juvonen , Anni Määttänen , Petri Ihalainen , Tapani Viitala , Jawad Sarfraz , Jouko Peltonen
Publication year: 2014
Journal: Colloids and Surfaces B: Biointerfaces
Volume number: 118
Issue number: 0
Start page: 261
End page: 269
ISSN: 0927-7765


Abstract

Specific interactions of extracellular matrix proteins with cells and their adhesion to the substrate are important for cell growth. A nanopatterned latex-coated paper substrate previously shown to be an excellent substrate for cell adhesion and 2D growth was studied for directed immobilization of proteins. The nanostructured latex surface was formed by short-wavelength \{IR\} irradiation of a two-component latex coating consisting of a hydrophilic film-forming styrene butadiene acrylonitrile copolymer and hydrophobic polystyrene particles. The hydrophobic regions of the IR-treated latex coating showed strong adhesion of bovine serum albumin (cell repelling protein), fibronectin (cell adhesive protein) and streptavidin. Opposite to the IR-treated surface, fibronectin and streptavidin had a poor affinity toward the untreated pristine latex coating. Detailed characterization of the physicochemical surface properties of the latex-coated substrates revealed that the observed differences in protein affinity were mainly due to the presence or absence of the protein repelling polar and charged surface groups. The protein adsorption was assisted by hydrophobic (dehydration) interactions.


Keywords

coated paper, Latex, Patterning, protein adsorption

Last updated on 2019-14-10 at 03:24