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The Effect of Alendronate-Loaded Polycarprolactone Nanofibrous Scaffolds on Osteogenic Differentiation of Adipose-Derived Stem Cells in Bone Tissue Regeneration

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The osteogenic effect of culturing adipose-derived stem cells (ADSCs) on alendronate (Aln)-loaded polycarprolactone (PCL) nanofibrous scaffolds was evaluated by examining alkaline phosphatase (ALP) activity, calcium content, and expression of osteogenic differentiation genes in vitro. The 10% Aln/PCL nanofibrous scaffolds showed more ALP activity, mineralization, and osteocalcin and osteopontin mRNA than the 1% or 5% Aln/PCL nanofibrous scaffolds. The capacity of Aln/PCL nanofibrous scaffolds to regenerate new bone was studied in a rat calvarial defect model. New bone formation in vivo was evaluated by radiography, micro-computed tomography, and histological analysis. At 8 weeks after implantation, Aln/PCL scaffolds had a positive effect on bone regeneration and matrix formation. These results suggested that Aln/PCL nanofibrous scaffolds enhanced the osteogenic differentiation of ADSCs in vitro and bone formation in vivo.
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Keywords: ADIPOSE-DERIVED STEM CELLS; ALENDRONATE; BONE REGENERATION; NANOFIBER; POLYCARPROLACTONE

Document Type: Research Article

Publication date: June 1, 2014

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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