Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Nanocomposite scaffolds composed of Apacite (apatite-calcite) nanostructures, poly (epsilon -caprolactone) and poly (2-hydroxyethylmethacrylate): The effect of nanostructures on physico- mechanical properties and osteogenic differentiation of human bone marrow mesenchymal stem cells in vitro

(2020) Nanocomposite scaffolds composed of Apacite (apatite-calcite) nanostructures, poly (epsilon -caprolactone) and poly (2-hydroxyethylmethacrylate): The effect of nanostructures on physico- mechanical properties and osteogenic differentiation of human bone marrow mesenchymal stem cells in vitro. Materials Science & Engineering C-Materials for Biological Applications. p. 13. ISSN 0928-4931

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Abstract

Nanocomposite scaffolds were fabricated from poly (epsilon-caprolactone) (PCL), Poly (2-hydroxyethylmethacrylate) (PHEMA), and Apacite (Apatite-calcite) nanostructures (15 and 25 wt). The nanoscale structure, physical and chemical properties, mechanical properties, hydrophilic behavior, degradability and osteogenic properties of the fabricated scaffolds were evaluated. The results showed that the mechanical strength, degradation, wetting ability, and mechanical strength of PCL-PHEMA scaffolds significantly increases upon inclusion of Apacite nanoparticles up to 25 wt. Accordingly, the best mechanical values (E 7.109 MPa and sigma 0.414 MPa) and highest degradability (32 within 96 h) were recorded for PCL-PHEMA scaffolds containing 25 wt of Apacite. Furthermore, highest porosity and roughness were observed in the PCL-PHEMA/25 Apacite as a result of the Apacite nanoparticles inclusion. There was no cytotoxicity recorded for the fabricated scaffolds based on the results obtained from MTT assay and acridine orange staining. Alkaline phosphatase activity, calcium content quantification, Van Kossa staining, FESEM and real time PCR tests confirmed the biomineralization, and the differentiation potential of the nanocomposite scaffolds. Overall, the 3D structure, optimum porosity and balanced dissolution rate of PCL-PHEMA/25 Apacite providing a balanced microenvironment resulted in improved cell adhesion, cell behavior, and replication, as well as osteogenic induction of human bone-marrow derived mesenchymal stem cells (hBM-MSCs).

Item Type: Article
Keywords: Apacite nanostructures Nanocomposite scaffolds PCL PHEMA Mesenchymal stem cells Bone differentiation bioactive glass nanoparticles osteoblastic differentiation biological-properties tissue pcl reinforcement biomaterials fluorapatite fabrication expression Materials Science
Page Range: p. 13
Journal or Publication Title: Materials Science & Engineering C-Materials for Biological Applications
Journal Index: ISI
Volume: 117
Identification Number: https://doi.org/10.1016/j.msec.2020.111271
ISSN: 0928-4931
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/8481

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