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Corneal decellularisation: recycling tissue for transplantation [abstract]

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journal contribution
posted on 05.10.2017, 10:39 by Sammy WilsonSammy Wilson, Laura E. Sidney, Siobhan E. Dunphy, Harminder S. Dua, Andrew Hopkinson
PURPOSE. There is a clinical need for reliable, reproducible biomimetic corneas. Decellularised tissues are advantageous compared to synthetic/semi-synthetic tissues in that the native matrix ultrastructure and intrinsic cues including growth factors, cytokines and glycosaminoglycans (GAGs) may be retained. However, there is currently no reliable, standardised human corneal decellularisation method. Here, we provide a systematic study of commonly used decellularisation methods and assess their appropriateness for corneal applications. METHODS. Eye-bank tissue unsuitable for transplantation was used to test decellularisation methods: Dispase removal of the epi- and endothelium; Mechanical agitation; Hypertonic NaCl; Ionic detergent (SDS); Non-ionic detergent (Triton-X100); all followed by nuclease treatment. Removal of cellular material, preservation of transparency, retention of corneal architecture and GAGs was assessed via histological, immunofluorescence and quantitative analysis. Potential cytotoxicity in vitro of the treated tissue was also assessed. RESULTS. No decellularisation technique investigated successfully removed 100% of cellular components. The techniques which had the least residual DNA, SDS and Triton-X, were most structurally compromised with reduced GAG content. Dispase treated, NaCl and mechanically agitated corneas had better preservation of structure, transparency and GAGs, but had higher residual DNA. CONCLUSIONS. The ability to reprocess and regenerate tissues deemed “unsuitable” for transplantation allows us to salvage valuable tissue. However, in order to progress, we may need to take a step back to establish a “decellularisation” criterion; which should balance effective removal of immune reactive material with maintenance of tissue functionality.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Acta Ophthalmologica

Volume

92

Pages

0 - 0

Citation

WILSON, S. ... et al., 2014. Corneal decellularisation: recycling tissue for transplantation [abstract]. Acta Ophthalmologica, 92, S253, DOI: 10.1111/j.1755-3768.2014.1723.x.

Publisher

John Wiley & Sons (© Acta Ophthalmologica Scandinavica Foundation)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

Presented at: 2014 European Association for Vision and Eye Research Conference (EVER 2014), Nice, France, 1-4 October 2014. This is the peer reviewed version of the following article: WILSON, S. ... et al., 2014. Corneal decellularisation: recycling tissue for transplantation [abstract]. Acta Ophthalmologica, 92, S253, which has been published in final form at: https://doi.org/10.1111/j.1755-3768.2014.1723.x. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

ISSN

1755-375X

eISSN

1755-3768

Language

en

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