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The effect of collagen ageing on its structure and cellular behaviour

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conference contribution
posted on 20.08.2018, 14:00 by Sammy WilsonSammy Wilson, Marie Guilbert, Josep Sule-Suso, James Torbet, Pierre Jeannesson, Ganesh D. Sockalingum, Ying Yang
Collagen is the most important component in extracellular matrix (ECM) and plays a pivotal role in individual tissue function in mammals. During ageing, collagen structure changes, which can detrimentally affect its biophysical and biomechanical properties due to an accumulation of advanced glycation end-products (AGEs). AGEs have been linked to non-enzymatic cross-linking of proteins resulting in the alteration of mechanical properties of the tissue. In this study we investigate the influence of different aged collagens on the mechanical and contractile properties of reconstituted hydrogel constructs seeded with corneal stromal fibroblasts. A non-destructive indentation technique and optical coherence tomography (OCT) are used to determine the elastic modulus and dimensional changes respectively. It is revealed that the youngest collagen constructs have a higher elastic modulus and increased contraction compared to the older collagen. These results provide new insights into the relationship between collagen molecular structures and their biomechanical properties.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

Volume

8222

Citation

WILSON, S.L. ... et al, 2012. The effect of collagen ageing on its structure and cellular behaviour. Proc. SPIE 8222, Dynamics and Fluctuations in Biomedical Photonics IX, 822210 (9 February 2012); doi: 10.1117/12.908749.

Publisher

© Society of Photo-Optical Instrumentation Engineers (SPIE)

Version

VoR (Version of Record)

Publication date

2012

Notes

Copyright © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

ISBN

9780819488657

Language

en