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Adhesion, proliferation, and osteogenic differentiation of human mesenchymal stem cells on additively manufactured Ti6Al4V alloy scaffolds modified with calcium phosphate nanoparticles
National Research Tomsk Polytechnic University, Tomsk, Russian Federation.
National Research Tomsk Polytechnic University, Tomsk, Russian Federation.
National Research Tomsk Polytechnic University, Tomsk, Russian Federation; First I. P. Pavlov State Medical University of St. Petersburg, St. Petersburg, Russian Federation.
Peter The Great St. Petersburg Polytechnic University, St. Petersburg, Russian Federation.
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2019 (English)In: Colloids and Surfaces B: Biointerfaces, ISSN 0927-7765, E-ISSN 1873-4367, Vol. 176, p. 130-139Article in journal (Refereed) Published
Abstract [en]

In the present study, biocomposites based on 3D porous additively manufactured Ti6Al4V (Ti64) scaffolds modified with biocompatible calcium phosphate nanoparticles (CaPNPs) were investigated. Ti64 scaffolds were manufactured via electron beam melting technology using an Arcam machine. Electrophoretic deposition was used to modify the scaffolds with CaPNPs, which were synthesized by precipitation in the presence of polyethyleneimine (PEI). Dynamic light scattering revealed that the CaP/PEI nanoparticles had an average size of 46 ± 18 nm and a zeta potential of +22 ± 9 mV. Scanning electron microscopy (SEM) revealed that the obtained spherical CaPNPs had an average diameter of approximately 90 nm. The titanium-based scaffolds coated with CaPNPs exhibited improved hydrophilic surface properties, with a water contact angle below 5°. Cultivation of human mesenchymal stem cells (hMSCs) on the CaPNPs-coated Ti64 scaffolds indicated that the improved hydrophilicity was beneficial for the attachment and growth of cells in vitro. The Ti6Al4V/CaPNPs scaffold supported an increase in the alkaline phosphatase (ALP) activity of cells. In addition to the favourable cell proliferation and differentiation, Ti6Al4V/CaPNPs scaffolds displayed increased mineralization compared to non-coated Ti6Al4V scaffolds. Thus, the developed composite 3D scaffolds of Ti6Al4V functionalized with CaPNPs are promising materials for different applications related to bone repair. 

Place, publisher, year, edition, pages
2019. Vol. 176, p. 130-139
Keywords [en]
Additive manufacturing, Calcium phosphate, Cell adhesion, Electron beam melting, Electrophoretic deposition, Nanoparticles, Proliferation in vivo, Scaffold, Surface properties
Identifiers
URN: urn:nbn:se:miun:diva-35415DOI: 10.1016/j.colsurfb.2018.12.047ISI: 000465051800016PubMedID: 30597410Scopus ID: 2-s2.0-85059137646OAI: oai:DiVA.org:miun-35415DiVA, id: diva2:1277320
Available from: 2019-01-10 Created: 2019-01-10 Last updated: 2019-05-22Bibliographically approved

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Koptioug, Andrei

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