Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Osteoblast differentiation of mesenchymal stem cells on modified PES-PEG electrospun fibrous composites loaded with Zn2SiO4 bioceramic nanoparticles

(2016) Osteoblast differentiation of mesenchymal stem cells on modified PES-PEG electrospun fibrous composites loaded with Zn2SiO4 bioceramic nanoparticles. Differentiation. pp. 148-158. ISSN 0301-4681

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Tissue engineering has attracted a great deal of interest by combining fibrous scaffolds and stem cells regarding bone regeneration applications. In the present study, polymeric fibrous polyethersulphone-polyethylene glycol (PES-PEG) was fabricated by electrospinning. It was then treated with NH3 plasma to enhance surface hydrophilicity, cell attachment, growth and differentiation potential. X-ray photoelectron spectroscopy (XPS) measurements were used to evaluate the modification of the scaffold's surface chemistry. Electrospun scaffolds were coated with willemite (Zn2SiO4) bioceramic nanoparticles. Scaffold characterization was done by scanning electron microscope (SEM), differential scanning calorimetry (DSC), contact angle measurements and tensile analysis. MTT assay was used to assess the biocompatibility of fibrous scaffolds loaded with Zn2SiO4 regarding proliferation support. Osteogenic differentiation of cultured human mesenchymal stem cells (hMSCs) on fibers was evaluated using common osteogenic markers such as alkaline phosphatase (ALP) activity, calcium mineral deposition, quantitative real-time PCR (qPCR) and immunocytochemical analysis (ICC). According to the results, proliferation and osteogenic differentiation of hMSCs were significantly enhanced after coating Zn2SiO4 on fibrous scaffolds. These results were detected by higher ALP activity, biomineralization and expression of osteogenic related genes and proteins in differentiated hMSCs. In conclusion, our results indicated that the combination of Zn2SiO4 nanoparticles and electrospun fibers is able to provide a new, suitable and more efficient matrix to support stem cells differentiation for bone tissue engineering applications. (C) 2016 International Society of Differentiation. Published by Elsevier B.V. All rights reserved.

Item Type: Article
Keywords: Osteoblast differentiation Mesenchymal stem cells PES-PEG fibers Zn2SiO4 nanoparticles poly(ethylene glycol) surface modification culture-conditions in-vitro bone scaffolds polymer biomaterials cartilage growth Cell Biology Developmental Biology
Page Range: pp. 148-158
Journal or Publication Title: Differentiation
Journal Index: ISI
Volume: 92
Number: 4
Identification Number:
ISSN: 0301-4681
Depositing User: مهندس مهدی شریفی

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