Fabrication of pillar-like titania nanostructures on titanium and their interactions with human skeletal stem cells |
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| Authors: | Terje Sj?str?m Matthew J Dalby Andrew Hart Rahul Tare Richard OC Oreffo Bo Su |
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| Institution: | 1. Department of Dentistry, National Yang-Ming University, Taipei 112, Taiwan;2. Graduate Institute of Basic Medical Science, China Medical University, Taichung 404, Taiwan;3. Department of Biomedical Informatics, Asia University, Taichung 413, Taiwan;4. Department of Stomatology, Taipei Veterans General Hospital, Taipei 112, Taiwan;5. Institute of Oral Biology, National Yang-Ming University, Taipei 112, Taiwan;6. Department of Medical Research, China Medical University Hospital, Taichung 406, Taiwan;7. Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung 406, Taiwan;8. School of Dentistry, Chung Shan Medical University, Taichung 402, Taiwan;9. Oral Medicine Center, Chung Shan Medical University Hospital, Taichung 402, Taiwan |
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| Abstract: | Surface nanotopography is known to influence the interaction of human skeletal (mesenchymal) stem cells (hMSC) with a material surface. While most surface nanopatterning has been performed on polymer-based surfaces there is a need for techniques to produce well-defined topography features with tuneable sizes on relevant load-bearing implant materials such as titanium (Ti). In this study titania nanopillar structures with heights of either 15, 55 or 100 nm were produced on Ti surfaces using anodization through a porous alumina mask. The influence of the surface structure heights on hMSC adhesion, spreading, cytoskeletal formation and differentiation was examined. The 15 nm high topography features resulted in the greatest cell response with bone matrix nodule forming on the Ti surface after 21 days. |
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