Article (Scientific journals)
Fluorescent oxygen sensitive microbead incorporation for measuring oxygen tension in cell aggregates.
Lambrechts, Dennis; Roeffaers, Maarten; Kerckhofs, Greet et al.
2013In Biomaterials, 34 (4), p. 922-9
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Keywords :
Animals; Biological Assay/methods; Cell Aggregation/physiology; Cell Line; Chondrocytes/cytology/metabolism; Mice; Microspheres; Molecular Imaging/methods; Oximetry/methods; Oxygen/analysis; Oxygen Consumption/physiology; Spectrometry, Fluorescence/methods
Abstract :
[en] Molecular oxygen is a main regulator of various cell functions. Imaging methods designed as screening tools for fast, in situ, 3D and non-interfering measurement of oxygen tension in the cellular microenvironment would serve great purpose in identifying and monitoring this vital and pivotal signalling molecule. We describe the use of dual luminophore oxygen sensitive microbeads to measure absolute oxygen concentrations in cellular aggregates. Stable microbead integration, a prerequisite for their practical application, was ensured by a site-specific delivery method that is based on the interactions between streptavidin and biotin. The spatial stability introduced by this method allowed for long term measurements of oxygen tension without interfering with the cell aggregation process. By making multiple calibration experiments we further demonstrated the potential of these sensors to measure local oxygen tension in optically dense cellular environments.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Lambrechts, Dennis
Roeffaers, Maarten
Kerckhofs, Greet ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Génie biomécanique
Roberts, Scott J.
Hofkens, Johan
Van de Putte, Tom
Van Oosterwyck, Hans
Schrooten, Jan
Language :
English
Title :
Fluorescent oxygen sensitive microbead incorporation for measuring oxygen tension in cell aggregates.
Publication date :
2013
Journal title :
Biomaterials
ISSN :
0142-9612
eISSN :
1878-5905
Publisher :
IPC Science and Technology Press, Netherlands
Volume :
34
Issue :
4
Pages :
922-9
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2012 Elsevier Ltd. All rights reserved.
Available on ORBi :
since 14 November 2013

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