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Tetour D, Paška T, Máková V, Nikendey Holubová B, Karpíšková J, Řezanka M, Brus J, Hodačová J. Cinchonine-based organosilica materials as heterogeneous catalysts of enantioselective alkene dihydroxylation. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Steinerova M, Matejka R, Stepanovska J, Filova E, Stankova L, Rysova M, Martinova L, Dragounova H, Domonkos M, Artemenko A, Babchenko O, Otahal M, Bacakova L, Kromka A. Human osteoblast-like SAOS-2 cells on submicron-scale fibers coated with nanocrystalline diamond films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111792. [PMID: 33579442 DOI: 10.1016/j.msec.2020.111792] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/06/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023]
Abstract
A unique composite nanodiamond-based porous material with a hierarchically-organized submicron-nano-structure was constructed for potential bone tissue engineering. This material consisted of submicron fibers prepared by electrospinning of silicon oxide (SiOx), which were oxygen-terminated (O-SiOx) and were hermetically coated with nanocrystalline diamond (NCD) films. The NCD films were then terminated with hydrogen (H-NCD) or oxygen (O-NCD). The materials were tested as substrates for the adhesion, growth and osteogenic differentiation of human osteoblast-like Saos-2 cells. The number and the spreading area of the initially adhered cells, their growth rate during 7 days after seeding and the activity of alkaline phosphatase (ALP) were significantly higher on the NCD-coated samples than on the uncoated O-SiOx samples. In addition, the concentration of type I collagen was significantly higher in the cells on the O-NCD-coated samples than on the bare O-SiOx samples. The observed differences could be attributed to the tunable wettability of NCD and to the more appropriate surface morphology of the NCD-coated samples in contrast to the less stable, rapidly eroding bare SiOx surface. The H-NCD coatings and the O-NCD coatings both promoted similar initial adhesion of Saos-2 cells, but the subsequent cell proliferation activity was higher on the O-NCD-coated samples. The concentration of beta-actin, vinculin, type I collagen and alkaline phosphatase (ALP), the ALP activity, and also the calcium deposition tended to be higher in the cells on the O-NCD-coated samples than on the H-NCD-coated samples, although these differences did not reach statistical significance. The improved cell performance on the O-NCD-coated samples could be attributed to higher wettability of these samples (water drop contact angle less than 10°), while the H-NCD-coated samples were hydrophobic (contact angle >70°). NCD-coated porous SiOx meshes can therefore be considered as appropriate scaffolds for bone tissue engineering, particularly those with an O-terminated NCD coating.
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Affiliation(s)
- Marie Steinerova
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic.
| | - Roman Matejka
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic; Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, Nam. Sitna 3105, 272 01 Kladno, Czech Republic.
| | - Jana Stepanovska
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic; Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, Nam. Sitna 3105, 272 01 Kladno, Czech Republic.
| | - Elena Filova
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic.
| | - Lubica Stankova
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic.
| | - Miroslava Rysova
- Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, 1, Czech Republic.
| | - Lenka Martinova
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech Republic.
| | - Helena Dragounova
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic.
| | - Maria Domonkos
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 162 00 Prague 6, Czech Republic; Department of Physics, Faculty of Civil Engineering, Czech Technical University in Prague, Thakurova 7, 166 29 Praha 6, Czech Republic.
| | - Anna Artemenko
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 162 00 Prague 6, Czech Republic.
| | - Oleg Babchenko
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 162 00 Prague 6, Czech Republic.
| | - Martin Otahal
- Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, Nam. Sitna 3105, 272 01 Kladno, Czech Republic.
| | - Lucie Bacakova
- Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 6, Czech Republic.
| | - Alexander Kromka
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 162 00 Prague 6, Czech Republic; Department of Physics, Faculty of Civil Engineering, Czech Technical University in Prague, Thakurova 7, 166 29 Praha 6, Czech Republic.
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