Interdisziplinäres Zentrum für Materialwissenschaften
  Publikationen [suche]   
Organisation
Aktivitäten
Kontakt
Angebote für Studenten
Bereiche im
      Nanotechnikum
Martin-Luther-Universität
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Tel.: +49 345 55 28471
Telefax:+49 345 55 27390 email: info@cmat.uni-halle.de
[Veröffentlichungen] [Graduierungsarbeiten] [Berichte] [Poster]
Abstracts

Mingyan Zhao, Lihua Li, Changren Zhou, Frank Heyroth, Bodo Fuhrmann, Karsten Maeder, Thomas Groth
Improved stability and cell response by intrinsic cross-linking of multilayers from collagen I and oxidized glycosaminoglycans.
Biomacromolecules (2014),

Stability of surface coatings against environmental stress, such as pH, high ionic strength, mechanical forces, etc. is crucial for biomedical application of implants. Here, a novel extracellular matrix-like polyelectrolyte multilayer (PEM) system composed of collagen I (Col I) and oxidized glycosaminoglycans (oGAGs) was stabilized by intrinsic cross-linking due to formation of imine bonds between aldehydes of oxidized chondroitin sulfate (oCS) or hyaluronan (oHA) and amino groups of Col I. It was also found that Col I contributed significantly more to overall mass in CS-Col I than in HA-Col I multilayer systems and fibrillised particularly in the presence of native and oxidized CS. Adhesion and proliferation studies with murine C3H10T1/2 embryonic fibroblasts demonstrated that covalent cross-linking of oGAG with Col I had no adverse effects on cell behavior. By contrast, it was found that cell size and polarization was more pronounced on oGAG-based multilayer systems, which corresponded also to the higher stiffness of cross-linked multilayers as observed by studies with quartz crystal microbalance (QCM). Overall, PEM prepared from oGAG and Col I give rise to stable PEM constructs due to intrinsic cross-linking that may be useful for making bioactive coatings of implants and tissue engineering scaffolds.

Keywords: biomaterials

DOI 10.1021/bm501286f
© ACS 2014


Impressum Copyright © Center of Materials Science, Halle, Germany. All rights reserved.