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Orthopaedic Proceedings
Vol. 106-B, Issue SUPP_18 | Pages 77 - 77
14 Nov 2024
Zevgolis D
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Introduction

Bereft of their optimal tissue context, cells lose their phenotype, function and therapeutic potential during in vitro culture. Despite the fact that in vivo cells are exposed simultaneously to multiple signals, traditional ex vivo cultures are monofactorial. With these in mind, herein we assessed the combined effect of surface topography, substrate rigidity, collagen type I coating and macromolecular crowding in human tenocyte, skin fibroblast and bone marrow mesenchymal stromal cell cultures.

Methods

Thermal imprinted was used to pattern (groove depth: 2,000 nm, groove width: 2,000 nm, line width: 2,000 nm) polydimethylsiloxane substrates of different rigidity (50 kPa, 130 kPa, 1,000 kPa). Grooved and planar substrates were subsequently coated with collagen type I and used to culture the aforementioned cell populations without and with macromolecular crowding (100 μg/ml carrageenan). After 3, 7 and 14 days in culture, cell morphology, viability, metabolic activity, proliferation, protein synthesis and deposition and gene expression analyses were conducted.