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  5. Tissue engineering cartilage with deep zone cytoarchitecture by high-resolution acoustic cell patterning
 
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Tissue engineering cartilage with deep zone cytoarchitecture by high-resolution acoustic cell patterning
File(s)
Armstrong - Tissue Engineering Cartilage with Deep Zone Cytoarchitecture by.pdf (3.39 MB)
Published version
Author(s)
Armstrong, JP
Pchelintseva, E
Treumuth, S
Campanella, C
Meinert, C
more
Type
Journal Article
Abstract
The ultimate objective of tissue engineering is to fabricate artificial living constructs with a structural organization and function that faithfully resembles their native tissue counterparts. For example, the deep zone of articular cartilage possesses a distinctive anisotropic architecture with chondrocytes organized in aligned arrays ≈1–2 cells wide, features that are oriented parallel to surrounding extracellular matrix fibers and orthogonal to the underlying subchondral bone. Although there are major advances in fabricating custom tissue architectures, it remains a significant technical challenge to precisely recreate such fine cellular features in vitro. Here, it is shown that ultrasound standing waves can be used to remotely organize living chondrocytes into high-resolution anisotropic arrays, distributed throughout the full volume of agarose hydrogels. It is demonstrated that this cytoarchitecture is maintained throughout a five-week course of in vitro tissue engineering, producing hyaline cartilage with cellular and extracellular matrix organization analogous to the deep zone of native articular cartilage. It is anticipated that this acoustic cell patterning method will provide unprecedented opportunities to interrogate in vitro the contribution of chondrocyte organization to the development of aligned extracellular matrix fibers, and ultimately, the design of new mechanically anisotropic tissue grafts for articular cartilage regeneration.
Date Issued
2022-12-21
Date Acceptance
2022-06-24
Citation
Advanced Healthcare Materials, 2022, 11 (24)
URI
http://hdl.handle.net/10044/1/98583
URL
https://onlinelibrary.wiley.com/doi/10.1002/adhm.202200481
DOI
https://www.dx.doi.org/10.1002/adhm.202200481
ISSN
2192-2640
Publisher
Wiley-VCH Verlag
Journal / Book Title
Advanced Healthcare Materials
Volume
11
Issue
24
Copyright Statement
© 2022 The Authors. Advanced Healthcare Materials published by Wiley-VCH GmbH

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.
License URL
http://creativecommons.org/licenses/by/4.0/
Identifier
https://onlinelibrary.wiley.com/doi/10.1002/adhm.202200481
Publication Status
Published
Article Number
ARTN 2200481
Date Publish Online
2022-07-11
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