Wismayer, K;
Mehrban, N;
Bowen, J;
Birchall, M;
(2019)
Improving cellular migration in tissue-engineered laryngeal scaffolds.
Journal of Laryngology and Otology
, 133
(2)
pp. 135-148.
10.1017/S0022215119000082.
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Abstract
OBJECTIVE: To modify the non-porous surface membrane of a tissue-engineered laryngeal scaffold to allow effective cell entry. METHODS: The mechanical properties, surface topography and chemistry of polyhedral oligomeric silsesquioxane poly(carbonate-urea) urethane were characterised. A laser technique introduced surface perforations. Micro computed tomography generated porosity data. Scaffolds were seeded with cells, investigated histologically and proliferation studied. Incubation and time effects were assessed. RESULTS: Laser cutting perforated the polymer, connecting the substructure with the ex-scaffold environment and increasing porosity (porous, non-perforated = 87.9 per cent; porous, laser-perforated at intensities 3 = 96.4 per cent and 6 = 89.5 per cent). Cellular studies confirmed improved cell viability. Histology showed cells adherent to the scaffold surface and cells within perforations, and indicated that cells migrated into the scaffolds. After 15 days of incubation, scanning electron microscopy revealed an 11 per cent reduction in pore diameter, correlating with a decrease in Young's modulus. CONCLUSION: Introducing surface perforations presents a viable method of improving polyhedral oligomeric silsesquioxane poly(carbonate-urea) urethane as a tissue-engineered scaffold.
Type: | Article |
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Title: | Improving cellular migration in tissue-engineered laryngeal scaffolds |
Location: | England |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1017/S0022215119000082 |
Publisher version: | http://doi.org/10.1017/S0022215119000082 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
Keywords: | Cell Proliferation, Laryngeal Neoplasms, Nanocomposites, Porosity, Tissue Engineering, Tissue Scaffolds |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > The Ear Institute |
URI: | https://discovery.ucl.ac.uk/id/eprint/10071183 |
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