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Bone remodeling is not able to repair the major injuries caused by trauma, cancer, etc. Bone tissue engineering is aimed to provide implants for bone repair or replacement. To approach such a purpose, polymeric scaffolds along with stem cells are used to fabricate a supportive matrix mimicking in vivo microenvironment. Here, we developed an in vivo-like matrix based on polycaprolactone (PCL) and fibrin to enhance the differentiation of human adipose-derived mesenchymal stem cells into osteo-like cells (AD-MSCs). PCL scaffold was fabricated by electrospinning and coated with fibrin. AD-MSCs were cultured and differentiate on PCL and PCL/fibrin. The viability of cultured cells in comparison with tissue culture plate (TCPS) was evaluated by MTT assay on days 1, 2, and 3 of differentiation. The differentiation was compared to TCPS on days 7, 14, and 21 of differentiation. To evaluate the differentiation efficiency, calcium content, alkaline phosphatase (ALP), and expression of RUNX-2, Collagene-I, Osteocalcin, and Osteonectin were assessed in differentiated cells. A slight increase in cell viability was observed in the TCPS group on day 3 of differentiation. Higher calcium content and ALP activity were observed in PCL and PCL/fibrin groups, respectively. The expression of osteogenic genes was higher in the PCL/fibrin group on days 7, 14, and 21 of differentiation. It seems PCL acts synergistically with fibrin to make an in vivo-like microenvironment and enhanced the differentiation of AD-MSCs into osteo-like cells.

Electrospun PCL/fibrin scaffold as a bone implant improved the differentiation of human adipose-derived mesenchymal stem cells into osteo-like cells