Autonomous magnetic labelling of functional mesenchymal stem cells for improved traceability and spatial control in cell therapy applications

Harrison, R., Markides, H., Morris, R.H. ORCID: 0000-0001-5511-3457, Richards, P., El Haj, A.J. and Sottile, V., 2017. Autonomous magnetic labelling of functional mesenchymal stem cells for improved traceability and spatial control in cell therapy applications. Journal of Tissue Engineering and Regenerative Medicine, 11 (8), pp. 2333-2348. ISSN 1932-6254

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Abstract

Mesenchymal stem cells (MSCs) represent a valuable resource for regenerative medicine treatments for orthopaedic repair and beyond. Following developments in isolation, expansion and differentiation protocols, efforts to promote clinical translation of emerging cellular strategies now seek to improve cell delivery and targeting. This study shows efficient live MSC labelling using silica‐coated magnetic particles (MPs), which enables 3D tracking and guidance of stem cells. A procedure developed for the efficient and unassisted particle uptake was shown to support MSC viability and integrity, while surface marker expression and MSC differentiation capability were also maintained. In vitro, MSCs showed a progressive decrease in labelling over increasing culture time, which appeared to be linked to the dilution effect of cell division, rather than to particle release, and did not lead to detectable secondary particle uptake. Labelled MSC populations demonstrated magnetic responsiveness in vitro through directed migration in culture and, when seeded onto a scaffold, supporting MP‐based approaches to cell targeting. The potential of these silica‐coated MPs for MRI cell tracking of MSC populations was validated in 2D and in a cartilage repair model following cell delivery. These results highlight silica‐coated magnetic particles as a simple, safe and effective resource to enhance MSC targeting for therapeutic applications and improve patient outcomes.

Item Type: Journal article
Publication Title: Journal of Tissue Engineering and Regenerative Medicine
Creators: Harrison, R., Markides, H., Morris, R.H., Richards, P., El Haj, A.J. and Sottile, V.
Publisher: John Wiley
Date: August 2017
Volume: 11
Number: 8
ISSN: 1932-6254
Identifiers:
NumberType
10.1002/term.2133DOI
Rights: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Divisions: Schools > School of Science and Technology
Depositing User: Jonathan Gallacher
Date Added: 15 Jan 2019 08:41
Last Modified: 03 Sep 2019 14:47
URI: http://irep.ntu.ac.uk/id/eprint/35550

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