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Rathnayake MSB, Boos MA, Farrugia BL, van Osch GJVM, Stok KS. Glycosaminoglycan-Mediated Interactions in Articular, Auricular, Meniscal, and Nasal Cartilage. Tissue Eng Part B Rev 2024. [PMID: 38613808 DOI: 10.1089/ten.teb.2023.0346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/15/2024]
Abstract
Glycosaminoglycans (GAGs) are ubiquitous components in the cartilage extracellular matrix (ECM). Ultrastructural arrangement of ECM and GAG-mediated interactions with collagen are known to govern the mechanics in articular cartilage, but these interactions are less clear in other cartilage types. Therefore, this article reviews the current literature on ultrastructure of articular, auricular, meniscal, and nasal septal cartilage, seeking insight into GAG-mediated interactions influencing mechanics. Ultrastructural features of these cartilages are discussed to highlight differences between them. GAG-mediated interactions are reviewed under two categories: interactions with chondrocytes and interactions with other fibrillar macromolecules of the ECM. Moreover, efforts to replicate GAG-mediated interactions to improve mechanical integrity of tissue-engineered cartilage constructs are discussed. In conclusion, studies exploring cartilage specific GAGs are poorly represented in the literature, and the ultrastructure of nasal septal and auricular cartilage is less studied compared with articular and meniscal cartilages. Understanding the contribution of GAGs in cartilage mechanics at the ultrastructural level and translating that knowledge to engineered cartilage will facilitate improvement of cartilage tissue engineering approaches.
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Affiliation(s)
- Manula S B Rathnayake
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Manuela A Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Brooke L Farrugia
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
- Graeme Clark Institute for Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Gerjo J V M van Osch
- Department of Otorhinolaryngology, Head and Neck Surgery and Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
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Boos MA, Ryan FA, Linnenschmidt F, Rathnayake MSB, Nowell CJ, Lamandé SR, Stok KS. A novel device for investigating structure-function relationships and mechanoadaptation of biological tissues. J Mech Behav Biomed Mater 2023; 142:105868. [PMID: 37119723 DOI: 10.1016/j.jmbbm.2023.105868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 04/16/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
Exploring the structure-function relationships of cartilage on a microstructural level is crucial for tissue engineering approaches aiming to restore function. Therefore, a combination of mechanical testing with cell and tissue-level imaging would allow for longitudinal studying loading mechanisms, biological responses and mechanoadaptation of tissues at a microstructural level. This paper describes the design and validation of FELIX, a custom-built device for non-destructive image-guided micromechanical evaluation of biological tissues and tissue-engineered constructs. It combines multiphoton microscopy with non-destructive mechanical testing of native soft tissues. Ten silicone samples of the same size were mechanically tested with FELIX by different users to assess the repeatability and reproducibility. The results indicate that FELIX can successfully substitute mechanical testing protocols with a commercial device without compromising precision. Furthermore, FELIX demonstrated consistent results across repeated measurements, with very small deviations. Therefore, FELIX can be used to accurately measure biomechanical properties by different users for separate studies. Additionally, cell nuclei and collagen of porcine articular cartilage were successfully imaged under compression. Cell viability remained high in chondrocytes cultured in agarose over 21 days. Furthermore, there were no signs of contamination indicating a cell friendly, sterile environment for longitudinal studies. In conclusion, this work demonstrates that FELIX can consistently quantify mechanical measures without compromising precision. Furthermore, it is biocompatible allowing for longitudinal measurements.
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Affiliation(s)
- Manuela A Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Frances A Ryan
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Felix Linnenschmidt
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Manula S B Rathnayake
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Cameron J Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Shireen R Lamandé
- Musculoskeletal Research, Murdoch Children's Research Institute, Parkville, VIC, Australia; Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia.
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Boos MA, Lamandé SR, Stok KS. Multiscale Strain Transfer in Cartilage. Front Cell Dev Biol 2022; 10:795522. [PMID: 35186920 PMCID: PMC8855033 DOI: 10.3389/fcell.2022.795522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/19/2022] [Indexed: 11/30/2022] Open
Abstract
The transfer of stress and strain signals between the extracellular matrix (ECM) and cells is crucial for biochemical and biomechanical cues that are required for tissue morphogenesis, differentiation, growth, and homeostasis. In cartilage tissue, the heterogeneity in spatial variation of ECM molecules leads to a depth-dependent non-uniform strain transfer and alters the magnitude of forces sensed by cells in articular and fibrocartilage, influencing chondrocyte metabolism and biochemical response. It is not fully established how these nonuniform forces ultimately influence cartilage health, maintenance, and integrity. To comprehend tissue remodelling in health and disease, it is fundamental to investigate how these forces, the ECM, and cells interrelate. However, not much is known about the relationship between applied mechanical stimulus and resulting spatial variations in magnitude and sense of mechanical stimuli within the chondrocyte’s microenvironment. Investigating multiscale strain transfer and hierarchical structure-function relationships in cartilage is key to unravelling how cells receive signals and how they are transformed into biosynthetic responses. Therefore, this article first reviews different cartilage types and chondrocyte mechanosensing. Following this, multiscale strain transfer through cartilage tissue and the involvement of individual ECM components are discussed. Finally, insights to further understand multiscale strain transfer in cartilage are outlined.
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Affiliation(s)
- Manuela A. Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Shireen R. Lamandé
- Musculoskeletal Research, Murdoch Children’s Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Kathryn S. Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
- *Correspondence: Kathryn S. Stok,
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Boos MA, Grinstaff MW, Lamandé SR, Stok KS. Contrast-Enhanced Micro-Computed Tomography for 3D Visualization and Quantification of Glycosaminoglycans in Different Cartilage Types. Cartilage 2021; 13:486S-494S. [PMID: 34696603 PMCID: PMC8804852 DOI: 10.1177/19476035211053820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To compare CA4+-enhanced micro-computed tomography (microCT) of bovine articular, meniscal, nasal, and auricular cartilage, each of which possesses a different extracellular matrix (ECM) composition and structure. DESIGN The diffusion kinetics of CA4+ in different native cartilage types were assessed over 20 hours. The feasibility of CA4+-enhanced microCT to visualize and quantify glycosaminoglycans (GAGs) in these different tissues was tested using safranin-O staining and 1,9-dimethylmethylene blue assay. RESULTS The diffusion kinetics of CA4+ in auricular cartilage are significantly slower compared with all other cartilage types. Total GAG content per volume correlates to microCT attenuation with an R2 value of 0.79 for all cartilage types. Three-dimensional contrast-enhanced microCT images of spatial GAG distribution reflect safranin-O staining and highlight the differences in ECM structure, with heterogeneous regions with higher GAG concentrations highlighted by the contrast agent. CONCLUSIONS CA4+-enhanced microCT enables assessment of 3-dimensiona distribution and GAG content in different types of cartilage and has promise as an ex vivo diagnostic technique to monitor matrix development in different tissues over time as well as tissue-engineered constructs.
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Affiliation(s)
- Manuela A. Boos
- Department of Biomedical Engineering,
The University of Melbourne, Parkville, VIC, Australia
| | - Mark W. Grinstaff
- Departments of Chemistry and Biomedical
Engineering, Boston University, Boston, MA, USA
| | - Shireen R. Lamandé
- Musculoskeletal Research, Murdoch
Children’s Research Institute, Parkville, VIC, Australia,Department of Paediatrics, The
University of Melbourne, Parkville, VIC, Australia
| | - Kathryn S. Stok
- Department of Biomedical Engineering,
The University of Melbourne, Parkville, VIC, Australia,Kathryn S. Stok, Department of Biomedical
Engineering, The University of Melbourne, Parkville, Melbourne, VIC 3010,
Australia.
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