Gelatin/chitosan/hyaluronan scaffold integrated with PLGA microspheres for cartilage tissue engineering

Acta Biomater. 2009 Jan;5(1):328-37. doi: 10.1016/j.actbio.2008.07.030. Epub 2008 Aug 6.

Abstract

Poly(lactide-co-glycotide) (PLGA) microspheres integrated into gelatin/chitosan/hyaluronan scaffolds were fabricated by freeze-drying and crosslinking with 1-ethyl-3-(3-dimethyl aminopropyl)carbodiimide. The effects of the microspheres on porosity, density, compressive modulus, phosphate-buffered saline uptake ratio and weight loss of the scaffolds were evaluated. Generally, a scaffold with a higher PLGA content had a lower porosity and weight loss, and a medium uptake ratio, but a larger apparent density and compressive modulus. When the PLGA content was lower than 50%, the PLGA-integrated scaffolds had a similar pore size (approximately 200microm) as that of the control, and as much as 90% of their porosity could be preserved. In vitro chondrocyte culture in the 50% PLGA-integrated scaffold demonstrated that the cells could proliferate and secrete extracellular matrix at the same level as in the control gelatin/chitosan/hyaluronan scaffold.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biocompatible Materials / chemistry*
  • Cartilage / metabolism*
  • Cell Proliferation
  • Chitosan / administration & dosage*
  • Chondrocytes / metabolism
  • Compressive Strength
  • Gelatin / administration & dosage*
  • Hyaluronic Acid / administration & dosage*
  • Lactic Acid / chemistry*
  • Microspheres
  • Models, Biological
  • Polyglycolic Acid / chemistry*
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Porosity
  • Rabbits
  • Tissue Engineering / methods*

Substances

  • Biocompatible Materials
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Polyglycolic Acid
  • Lactic Acid
  • Gelatin
  • Hyaluronic Acid
  • Chitosan