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Indexed by:Journal Papers
Date of Publication:2015-10-01
Journal:MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Included Journals:SCIE、EI、PubMed、Scopus
Volume:55
Page Number:384-392
ISSN No.:0928-4931
Key Words:Spinner flask; Tissue engineered cartilage; ADSCs; Chitosan/gelatin hybrid hydrogel; Three dimensional fabrication
Abstract:Cartilage transplantation using in vitro tissue engineered cartilage is considered a promising treatment for articular cartilage defects. In this study, we assessed the advantages of adipose derived stem cells (ADSCs) combined with chitosan/gelatin hybrid hydrogel scaffolds, which acted as a cartilage biomimetic scaffold, to fabricate a tissue engineered cartilage dynamically in vitro and compared this with traditional static culture. Physical properties of the hydrogel scaffolds were evaluated and ADSCs were inoculated into the hydrogel at a density of 1 x 10(7) cells/mL and cultured in a spinner flask with a special designed steel framework and feed with chondrogenic inductive media for two weeks. The results showed that the average pore size, porosity, swelling rate and elasticity modulus of hybrid scaffolds with good biocompatibility were 118.25 +/- 19.51 mu m, 82.60 +/- 234%, 361.28 +/- 0.47% and 61.2 +/- 0.16 kPa, respectively. ADSCs grew well in chitosan/gelatin hybrid scaffold and successfully differentiated into chondrocytes, showing that the scaffolds were,suitable for tissue engineering applications in cartilage regeneration. Induced cells cultivated in a dynamic spinner flask with a special designed steel frame expressed more proteoglycans and the cell distribution was much more uniform with the scaffold being filled mostly with extracellular matrix produced by cells. A spinner flask with framework promoted proliferation and chondrogenic differentiation of ADSCs within chitosan/gelatin hybrid scaffolds and accelerated dynamic fabrication of cell hydrogel constructs, which could be a selective and good method to construct tissue engineered cartilage in vitro. (C) 2015 Elsevier B.V. All rights reserved.
