Dermal Fibroblast-Mediated BMP2 Therapy to Accelerate Bone Healing in an Equine Osteotomy Model

作者：Ishihara Akikazu; Zekas Lisa J; Litsky Alan S; Wei**rode Steven E; Bertone Alicia L^*

来源：Journal of Orthopaedic Research, 2010, 28(3): 403-411.

DOI：10.1002/jor.20978

• bone healing
• BMP2
• dermal fibroblast
• adenovirus

This study evaluated healing of equine metacarpal/metatarsal osteotomes in response to percutaneous injection of autologous dermal fibroblasts (DFbs) genetically engineered secrete bone morphogenetic protein-2 (BMP2) or domonstrate green fluorescent protein (GFP) gene expression administered 14 days surgery Radiographic assessment of bone formation indicated greater and earlier healing of bone detects treated with DFb with BMP2 gene augmentation Quantitative computed tomography and biomechanical testing revealed greater mineralized callus and torsional strength of DFb-BMP2-treated bone defects On the histologic evaluation, the bone defects with DFb-BMP2 implantation had greater formation of mature cartilage and bone nodules within the osteotomy gap and greater mineralization activity on osteotomy edges Autologous DFbs were successfully isolated in high numbers by a skin biopsy, rapidly expanded without fastidious culture techniques, permissive to adenoviral vectors, and efficient at in vitro BMP2 protein production and BMP2-induced osteogenic differentiation. This study demonstrated an efficacy and feasibility of DFb-mediated BMP2 therapy to accelerate the healing of osteotomies Skin cell-neglected BMP2 th

• 出版日期2010-3