Original title: Growth of human adipose-derived stem cells on Ti-6Al-4V alloy with various surface modifications
Authors: Kročilová, Nikola ; Bačáková, Lucie ; Pařízek, Martin ; Havlíková, Jana ; Motarjemi, H. ; Molitor, M. ; Gabor, R. ; Marvan, J.
Document type: Papers
Conference/Event: NANOCON 2015. International Conference /7./, Brno (CZ), 20151014
Year: 2015
Language: eng
Abstract: Adipose-derived stem cells (ASCs) are of a great importance for bone tissue engineering. We compared ASCs obtained by liposuction under two pressures (-200 mmHg and -700 mmHg). The number and proliferation activity of cells isolated under -700 mmHg (ASC-H) were higher than in cells isolated under -200 mmHg (ASC-L). However, the ASC-L was more active in osteogenic differentiation, as manifested by a higher intensity of fluorescence of alkaline phosphatase and osteocalcin in these cells. The adhesion and growth of ASCs were then studied on Ti-6Al-4V samples either unmodified (K, roughness parameter R-a = 280 nm) or modified by shot blasting and tarnishing A, R-a = 200 nm), vibratory finishing (B, R-a = 100 nm) and vibratory finishing, shot blasting and polishing (C, R-a = 80 nm). All modified samples were more wettable than the K samples. On day 1 after seeding, the size of cell spreading area on some modified samples was lower than on K samples, namely on B samples in ASC-L, on B and C in ASC-H and on A in control MG-63 cells. On day 3, the cell number on some modified samples became higher than on K samples, namely on C samples (ASC-L), on B (ASC-H) and on B and C s (MG-63 cells). On day 7, the numbers of ASC-H and MG-63 cells on all modified samples evened out and became significantly higher than on K samples. On ASC-L samples, the highest cell numbers were obtained on A samples. Thus, all studied modifications of Ti-6Al-4V enhanced growth of ASCs and human osteoblast-like MG-63 cells.
Keywords: bone implants; bone tissue engineering; cell proliferation; liposuction; stem cells; surface roughness
Project no.: TA04011214 (CEP), NV15-32497A (CEP)
Funding provider: GA TA ČR, GA MZd
Host item entry: NANOCON 2015: 7th International Conference on Nanomaterials - Research and Application, Conference Proceedings, ISBN 978-80-87294-63-5

Institution: Institute of Physiology AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0267994

Permalink: http://www.nusl.cz/ntk/nusl-263125


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