Abstract
To explore the potential of combined delivery of osteogenic and angiogenic factors to bone marrow stromal cells (BMSCs) for repair of critical-size bone defects, we followed the formation of bone and vessels in tissue-engineered constructs in nude mice and rabbit bone defects upon introducing different combinations of BMP-2, vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang-1) to BMSCs with adenoviral vectors. Better osteogenesis and angiogenesis were found in co-delivery group of BMP-2, VEGF and angiopoietin-1 than any other combination of these factors in both animal models, indicating combined gene delivery of angiopoietin-1 and VEGF165 into a tissue-engineered construct produces an additive effect on BMP-2-induced osteogenesis.
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