Abstract
Combination of adipose-derived mesenchymal stem cells (ADSCs) and synthetic materials in terms of pancreatic tissue engineering can be considered as a treatment of diabetes. This study aimed to evaluate the differentiation of human ADSCs to pancreatic cells on poly-l-lactic acid/polyvinyl alcohol (PLLA/PVA) nanofibers as a three-dimensional (3D) scaffold. Mesenchymal stem cells (MSCs) were characterized for mesenchymal surface markers by flow cytometry. Then ADSCs were seeded on 3D scaffolds and treated with pancreatic differentiation medium. Immunostaining assay showed that ADSCs were very efficiently differentiated into a relatively homogeneous population of insulin-producing cells. Moreover, real-time RT-PCR results revealed that pancreas-specific markers were highly expressed in 3D scaffolds compared with their expression in tissue culture plates and this difference in expression level was significant. In addition, insulin and C-peptide secreted in response to varying concentrations of glucose in the 3D scaffold group was significantly higher than that in 2D culture. The results of the present study confirmed that PLLA/PVA scaffold seeded with ADSCs could be a suitable option in pancreatic tissue engineering.
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