Abstract
We determined the feasibility of using scaffolds of adenoviral human BMP2 gene (AdBMP2)-modified human bone marrow mesenchymal stem cells (hBMSCs) and antigen-free bovine cancellous bone (BCB) to construct bone tissue. hMSCs were infected with AdBMP-2. Expression of BMP-2 and alkaline phosphatase confirmed successful secretion of active BMP-2. The osteogenic capability of a composite of AdBMP2-modified hMSCs with BCB was evaluated in athymic mice (group A). BCB (group B), hMSCs/BCB (group C), adenoviral β‐galactosidase genes (Adβgal)-transfected hMSCs/BCB (group D) were controls. Formation of bone tissue was assessed by histological methods 4 weeks and 8 weeks after implantation. Implanted cells were identified by human Y-chromosome-specific fluorescence in-situ hybridization (FISH). hMSCs differentiated into osteogenic cells, and bone formation was observed. Obvious bone formation was not noted at any time point in control groups. We hypothesize that the described method is a promising method for bone regeneration.
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