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A Comparison Study on the Behavior of Human Endometrial Stem Cell-Derived Osteoblast Cells on Plga/Ha Nanocomposite Scaffolds Fabricated by Electrospinning and Freeze-Drying Methods Publisher Pubmed



Namini MS1 ; Bayat N2, 3 ; Tajerian R2 ; Ebrahimibarough S2 ; Azami M2 ; Irani S1 ; Jangjoo S4 ; Shirian S5, 6 ; Ai J2, 3
Authors
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Authors Affiliations
  1. 1. Islamic Azad University, Department of Biology, Science and Research Branch, Tehran, Iran
  2. 2. Tehran University of Medical Sciences, Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran, Iran
  3. 3. Tehran University of Medical Sciences, Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran, Iran
  4. 4. Shiraz University of Medical Sciences, School of Medicine, Shiraz, Iran
  5. 5. Shahrekord University, Department of Pathology, School of Veterinary Medicine, Shahr-e Kord, Iran
  6. 6. Shiraz Molecular Pathology Research Center, Dr Daneshbod Lab Pathology, Shiraz, Iran

Source: Journal of Orthopaedic Surgery and Research Published:2018


Abstract

Background: An engineered tissue structure is an artificial scaffold combined with cells and signaling factors. Among various polymers, the polylactide-co-glycolide/hydroxyapatite (PLGA/HA) has attracted much attention due to their optimal properties. The aim of this study was to study the behavior of human endometrial stem cell (hEnSC)-derived osteoblast cells cultured on PLGA/HA nanocomposite scaffolds. Methods: hEnSCs were isolated and exposed to osteogenic media for 21 days. Differentiated cells were cultured on PLGA/HA synthetic scaffolds. The PLGA/HA-based nanocomposite scaffolds were fabricated using either electrospinning or freeze-drying methods. Behavior of the cells was evaluated a week after seeding hEnSC-derived osteoblast-like cells on these scaffolds. Osteogenesis was investigated in terms of alkaline phosphatase activity, gene expression, immunocytochemistry (ICC), proliferation, and scanning electron microscopy (SEM). Moreover, scaffold properties, such as pore size and morphology of the cells, onto the scaffolds were evaluated using SEM. Furthermore, biocompatibility of these scaffolds was confirmed by 3-(4,5-dimethylthiazoyl-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Results: The matrix mineralization was proved by alizarin red staining, and the osteogenic media-treated cultures positively expressed osteocalcin and osteopontin markers. Moreover, qRT-PCR results confirmed the positive gene expression of osteopontin and osteonectin in the differentiated osteoblast-like cells. The results of behavior assessment of the cultured cells on electrospinning and freeze-dried scaffolds showed that the behavior of the cultured cells on the freeze-dried PLGA/HA scaffolds was significantly better than the electrospinning PLGA/HA scaffolds. Conclusion: It has been shown that the freeze-dried PLGA/HA nanocomposite scaffolds can appropriately support the attachment and proliferation of the differentiated osteoblast cells and are a suitable candidate for bone tissue engineering. © 2018 The Author(s).
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