Evaluation of bone matrix gelatin/fibrin glue and chitosan/gelatin composite scaffolds for cartilage tissue engineering

Genet Mol Res. 2016 Jul 15;15(3). doi: 10.4238/gmr.15038431.

Abstract

This study was designed to evaluate bone matrix gelatin (BMG)/fibrin glue and chitosan/gelatin composite scaffolds for cartilage tissue engineering. Chondrocytes were isolated from costal cartilage of Sprague-Dawley rats and seeded on BMG/fibrin glue or chitosan/gelatin composite scaffolds. After different in vitro culture durations, the scaffolds were subjected to hematoxylin and eosin, Masson's trichrome, and toluidine blue staining, anti-collagen II and anti-aggrecan immunohistochemistry, and scanning electronic microscopy (SEM) analysis. After 2 weeks of culture, chondrocytes were distributed evenly on the surfaces of both scaffolds. Cell numbers and the presence of extracellular matrix components were markedly increased after 8 weeks of culture, and to a greater extent on the chitosan/gelatin scaffold. The BMG/fibrin glue scaffold showed signs of degradation after 8 weeks. Immunofluorescence analysis confirmed higher levels of collagen II and aggrecan using the chitosan/gelatin scaffold. SEM revealed that the majority of cells on the surface of the BMG/fibrin glue scaffold demonstrated a round morphology, while those in the chitosan/gelatin group had a spindle-like shape, with pseudopodia. Chitosan/gelatin scaffolds appear to be superior to BMG/ fibrin glue constructs in supporting chondrocyte attachment, proliferation, and biosynthesis of cartilaginous matrix components.

Publication types

  • Comparative Study

MeSH terms

  • Adhesives / adverse effects
  • Aggrecans / genetics
  • Aggrecans / metabolism
  • Animals
  • Bone Matrix / chemistry
  • Cell Adhesion
  • Cells, Cultured
  • Chitosan / adverse effects
  • Chondrocytes / cytology
  • Chondrocytes / drug effects*
  • Chondrocytes / metabolism
  • Chondrogenesis / drug effects
  • Collagen Type II / genetics
  • Collagen Type II / metabolism
  • Fibrin / adverse effects
  • Gelatin / adverse effects
  • Rats
  • Rats, Sprague-Dawley
  • Tissue Engineering / methods*
  • Tissue Scaffolds / adverse effects
  • Tissue Scaffolds / chemistry*

Substances

  • Adhesives
  • Aggrecans
  • Collagen Type II
  • Gelatin
  • Fibrin
  • Chitosan