title: Cartilage tissue engineering with demineralized bone matrix gelatin and fibrin glue hybrid scaffold: an in vitro study.
abstract: To develop a cartilage-like tissue with hybrid scaffolds of demineralized bone matrix gelatin (BMG) and fibrin, rabbit chondrocytes were cultured on hybrid fibrin/BMG scaffolds in vitro. BMG scaffolds were carefully soaked in a chondrocyte-fibrin suspension, which was polymerized by submerging the constructs into thrombin-calcium chloride solution. Engineered cartilage-like tissue grown on the scaffolds was characterized by histology, immunolocalization, scanning electron microscopy, biochemical assays, and analysis of gene expression at different time points of the in vitro culture. The presence of proteoglycan in the fibrin/BMG hybrid constructs was confirmed by positive toluidine blue and alcian blue staining. Collagen type II exhibited intense immunopositivity at the pericellular matrices. Chondrogenic properties were further demonstrated by the expression of gene-encoded cartilage-specific markers, collagen type II, and aggrecan core protein. The glycosaminoglycan production and hydroxyproline content of tissue grown on the fibrin/BMG hybrid scaffolds were higher than that of the BMG group. In conclusion, the fibrin/BMG hybrid scaffolds may serve as a potential cell delivery vehicle and a structural basis for cartilage tissue engineering.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, the Second Hospital, Xi'an Jiao Tong University, Xi'an, Shaanxi, P R China.
authors.forename: Zheng-Hui
authors.initials: ZH
authors.lastname: Wang
authors.forename: Xi-Jing
authors.initials: XJ
authors.lastname: He
authors.forename: Zhuang-Qun
authors.initials: ZQ
authors.lastname: Yang
authors.forename: Jun-Bo
authors.initials: JB
authors.lastname: Tu
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000378:metabolism; D001857:Bone Matrix / Q000378:metabolism*; D002356:Cartilage / Q000378:metabolism*; D019902:Chondrocytes / Q000378:metabolism; D024043:Collagen Type II / Q000378:metabolism; D005337:Fibrin / Q000378:metabolism; D015718:Fibrin Tissue Adhesive / Q000378:metabolism; D005780:Gelatin / Q000378:metabolism; D007150:Immunohistochemistry; D008855:Microscopy, Electron, Scanning; D011817:Rabbits; D020133:Reverse Transcriptase Polymerase Chain Reaction; D023822:Tissue Engineering; D054457:Tissue Scaffolds
chemical_list: D001672:Biocompatible Materials; D024043:Collagen Type II; D015718:Fibrin Tissue Adhesive; D005780:Gelatin; D005337:Fibrin