Fabrication and evaluation of electrospun polycaprolactone nanoscaffold for compatibility with human adipose stem cells for tissue engineering

Tissue engineering is a new approach to regeneration and repair lost or damaged tissues. The aim of this study is to design and manufacture polycaprolactone (PCL) randomly electrospun nanofiber scaffold for use in regenerative medicine.

Human adipose derived stem cells (hADSCs) were isolated (from superficial layer of abdominal fat), cultured (in DMEM/Ham'sF12 medium) and characterized (flow cytometry for CD29, CD73, CD34, CD105 and CD45). Electrospinning was used to produce PCL nanofiber scaffolds, scanning electron microscopy (SEM) was used to investigate the binding, penetration and morphology of hADSCs, and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) was used to determine the toxicity of scaffolds.

Flow cytometry showed extensive expression of the CD29, CD73 and CD105 (positive) and very low expression of the CD34 and CD45 (negative) in hADSCs. The results of MTT assay, showed the viability and proliferation of hADSCs which were seeded on the nanofiber scaffold. Microscopic photographs of SEM, showed hADSCs attached to PCL nanofiber scaffolds and migrating.

The results of this study showed that electrospun PCL nanofiber scaffolds are suitable for implantation, binding and propagation of hADSCs.