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Effects of the controlled-released TGF-β1 from chitosan microspheres on chondrocytes cultured in a collagen/chitosan/glycosaminoglycan scaffold

Paper ID Volume ID Publish Year Pages File Format Full-Text
12921 822 2004 11 PDF Available
Title
Effects of the controlled-released TGF-β1 from chitosan microspheres on chondrocytes cultured in a collagen/chitosan/glycosaminoglycan scaffold
Abstract

The objectives of this study were (1) to develop a three-dimensional collagen/chitosan/glycosaminoglycan (GAG) scaffold in combination with transforming growth factor-beta1 (TGF-β1)-loaded chitosan microspheres, and (2) to evaluate the effect of released TGF-β1 on the chondrogenic potential of rabbit chondrocytes in such scaffolds.TGF-β1 was loaded into chitosan microspheres using an emulsion-crosslinking method. The controlled release of TGF-β1, as measured by enzyme-linked immunosorbent assay (ELISA), was monitored for 7 days. The porous scaffolds containing collagen and chitosan were fabricated by using a freeze drying technique and crosslinked using 1-ethyl-3-(3-dimethyl aminopropyl)carbodiimide (EDC) in the presence of chondroitin sulfate (CS), as a GAG component. The TGF-β1 microspheres were encapsulated into the scaffold at a concentration of 10 ng TGF-β1/scaffold and then chondrocytes were seeded in the scaffold and incubated in vitro for 3 weeks. Both proliferation rate and glycosaminoglycan (GAG) production were significantly higher in the TGF-β1 microsphere-incorporated scaffolds than in the control scaffolds without microspheres. Extracellular matrix staining by Safranin O and immunohistochemistry for type II collagen were elevated in the scaffold with TGF-β1 microspheres. These results suggest that TGF-β1 microspheres when incorporated into a scaffold have the potential to enhance cartilage formation.

Keywords
Collagen; Chitosan; Chondroitin sulfate; Chondrocyte; Scaffold; TGF (transforming growth factor); Microsphere
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Effects of the controlled-released TGF-β1 from chitosan microspheres on chondrocytes cultured in a collagen/chitosan/glycosaminoglycan scaffold
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 25, Issue 18, August 2004, Pages 4163–4173
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us