Adhesion, proliferation, and osteogenic differentiation of human mesenchymal stem cells on additively manufactured Ti6Al4V alloy scaffolds modified with calcium phosphate nanoparticles

Publication date: Available online 18 December 2018Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Ekaterina Chudinova, Maria Surmeneva, Alexander S. Timin, Timofey E. Karpov, Alexandra Wittmar, Mathias Ulbricht, Anna Ivanova, Kateryna Loza, Oleg Prymak, Andrey Koptyug, Matthias Epple, Roman A. SurmenevAbstractIn 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 spherical CaPNPs obtained 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 favo...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research