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Sato M, Shah FA. Contributions of Resin Cast Etching to Visualising the Osteocyte Lacuno-Canalicular Network Architecture in Bone Biology and Tissue Engineering. Calcif Tissue Int 2023; 112:525-542. [PMID: 36611094 PMCID: PMC10106349 DOI: 10.1007/s00223-022-01058-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/21/2022] [Indexed: 01/09/2023]
Abstract
Recent years have witnessed an evolution of imaging technologies towards sophisticated approaches for visualising cells within their natural environment(s) and for investigating their interactions with other cells, with adjacent anatomical structures, and with implanted biomaterials. Resin cast etching (RCE) is an uncomplicated technique involving sequential acid etching and alkali digestion of resin embedded bone to observe the osteocyte lacuno-canalicular network using scanning electron microscopy. This review summarises the applicability of RCE to bone and the bone-implant interface. Quantitative parameters such as osteocyte size, osteocyte density, and number of canaliculi per osteocyte, and qualitative metrics including osteocyte shape, disturbances in the arrangement of osteocytes and canaliculi, and physical communication between osteocytes and implant surfaces can be investigated. Ageing, osteoporosis, long-term immobilisation, spinal cord injury, osteoarthritis, irradiation, and chronic kidney disease have been shown to impact osteocyte lacuno-canalicular network morphology. In addition to titanium, calcium phosphates, and bioactive glass, observation of direct connectivity between osteocytes and cobalt chromium provides new insights into the osseointegration potential of materials conventionally viewed as non-osseointegrating. Other applications include in vivo and in vitro testing of polymer-based tissue engineering scaffolds and tissue-engineered ossicles, validation of ectopic osteochondral defect models, ex vivo organ culture of whole bones, and observing the effects of gene dysfunction/deletion on the osteocyte lacuno-canalicular network. Without additional contrast staining, any resin embedded specimen (including clinical biopsies) can be used for RCE. The multitude of applications described here attest to the versatility of RCE for routine use within correlative analytical workflows, particularly in biomaterials science.
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Affiliation(s)
- Mari Sato
- Oral Biochemistry and Molecular Biology, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Furqan A Shah
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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Quent VMC, Taubenberger AV, Reichert JC, Martine LC, Clements JA, Hutmacher DW, Loessner D. A humanised tissue‐engineered bone model allows species‐specific breast cancer‐related bone metastasis in vivo. J Tissue Eng Regen Med 2017; 12:494-504. [DOI: 10.1002/term.2517] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 06/14/2017] [Accepted: 07/11/2017] [Indexed: 12/29/2022]
Affiliation(s)
- VMC Quent
- Department of Obstetrics and Gynecology, Martin‐Luther‐Krankenhaus Charité Berlin Berlin Germany
| | - AV Taubenberger
- Biotechnology Center Dresden Technical University of Dresden Dresden Germany
| | - JC Reichert
- Department of Orthopedics and Accident Surgery, Waldkrankenhaus Protestant Hospital Charité Berlin Berlin Germany
| | - LC Martine
- Queensland University of Technology (QUT) Brisbane Australia
| | - JA Clements
- Queensland University of Technology (QUT) Brisbane Australia
- Australian Prostate Cancer Research Centre—–Queensland, Translational Research Institute Queensland University of Technology Brisbane Australia
| | - DW Hutmacher
- Queensland University of Technology (QUT) Brisbane Australia
- Australian Prostate Cancer Research Centre—–Queensland, Translational Research Institute Queensland University of Technology Brisbane Australia
- The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA USA
- Institute for Advanced Study Technische Universität München Garching Germany
| | - D Loessner
- Queensland University of Technology (QUT) Brisbane Australia
- Barts Cancer Institute Queen Mary University of London London UK
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Cao H, Sun ZB, Zhang L, Qian W, Li CY, Guo XP, Zhang Y. Adenovirus-mediated bone morphogenetic protein-2 promotes osteogenic differentiation in human mesenchymal stem cells in vitro. Exp Ther Med 2017; 14:377-382. [PMID: 28672942 DOI: 10.3892/etm.2017.4482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 03/17/2017] [Indexed: 01/18/2023] Open
Abstract
Delayed and failed bone union following fracture is a common clinical complication that requires treatment in orthopedics. Cell-based therapies and tissue-engineering approaches are potential therapeutic strategies for bone repair and fracture healing. However, the effect of adenovirus expressing bone morphogenetic protein-2 (Ad-BMP-2) on the osteogenic ability of human mesenchymal stem cells (hMSCs) has remained to be fully elucidated. Therefore, in the present study, hMSCs were transduced using Ad-BMP-2 to assess the effects of its application and to determine whether Ad-BMP-2 promotes the osteogenic differentiation of hMSCs. The purity of the hMSC cultures was assessed using flow cytometric analysis. In order to assess the osteogenic activity, alkaline phosphatase activity (ALP) was measured and to estimate the osteoblastic mineralization and calcification, von Kossa staining for phosphates was performed. Cells positive for Src homology 2 domain were determined to be hMSCs and the presence of CD34 was used to distinguish hematopoietic lineages. Following treatment, the Ad-BMP-2 and control group had significantly increased ALP levels (P<0.05). Compared to the blank group and the group transfected with adenoviral vector containing LacZ, the phosphate deposition in the Ad-BMP-2 group and the positive control group treated with dexamethasone was markedly increased. The results of the present study suggested that Ad-BMP-2 promotes osteogenic differentiation in hMSCs and may have a potential application in treating delayed union and nonunion following bone fracture.
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Affiliation(s)
- Hong Cao
- Department of Orthopedic Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Zhi-Bo Sun
- Department of Orthopedic Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Lei Zhang
- Department of Orthopedic Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Wei Qian
- Department of Orthopedic Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Chun-Yang Li
- Department of Reproductive Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Xiao-Peng Guo
- Department of Orthopedic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
| | - Ying Zhang
- Department of Reproductive Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
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Martine LC, Holzapfel BM, McGovern JA, Wagner F, Quent VM, Hesami P, Wunner FM, Vaquette C, De-Juan-Pardo EM, Brown TD, Nowlan B, Wu DJ, Hutmacher CO, Moi D, Oussenko T, Piccinini E, Zandstra PW, Mazzieri R, Lévesque JP, Dalton PD, Taubenberger AV, Hutmacher DW. Engineering a humanized bone organ model in mice to study bone metastases. Nat Protoc 2017; 12:639-663. [PMID: 28253234 DOI: 10.1038/nprot.2017.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Current in vivo models for investigating human primary bone tumors and cancer metastasis to the bone rely on the injection of human cancer cells into the mouse skeleton. This approach does not mimic species-specific mechanisms occurring in human diseases and may preclude successful clinical translation. We have developed a protocol to engineer humanized bone within immunodeficient hosts, which can be adapted to study the interactions between human cancer cells and a humanized bone microenvironment in vivo. A researcher trained in the principles of tissue engineering will be able to execute the protocol and yield study results within 4-6 months. Additive biomanufactured scaffolds seeded and cultured with human bone-forming cells are implanted ectopically in combination with osteogenic factors into mice to generate a physiological bone 'organ', which is partially humanized. The model comprises human bone cells and secreted extracellular matrix (ECM); however, other components of the engineered tissue, such as the vasculature, are of murine origin. The model can be further humanized through the engraftment of human hematopoietic stem cells (HSCs) that can lead to human hematopoiesis within the murine host. The humanized organ bone model has been well characterized and validated and allows dissection of some of the mechanisms of the bone metastatic processes in prostate and breast cancer.
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Affiliation(s)
- Laure C Martine
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Boris M Holzapfel
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Orthopedic Center for Musculoskeletal Research, University of Wuerzburg, Wuerzburg, Germany
| | - Jacqui A McGovern
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Ferdinand Wagner
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Orthopedics for the University of Regensburg, Asklepios Klinikum Bad Abbach, Bad Abbach, Germany.,Department of Pediatric Surgery, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Verena M Quent
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Obstetrics and Gynecology, Martin-Luther-Krankenhaus, Academic Teaching Hospital of the Charité Berlin, Berlin, Germany
| | - Parisa Hesami
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Felix M Wunner
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Cedryck Vaquette
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | | | - Toby D Brown
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Bianca Nowlan
- The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Queensland, Australia
| | - Dan Jing Wu
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | | | - Davide Moi
- The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Queensland, Australia
| | - Tatiana Oussenko
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Elia Piccinini
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Peter W Zandstra
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Roberta Mazzieri
- The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Queensland, Australia
| | - Jean-Pierre Lévesque
- Stem Cell Biology Group - Blood and Bone Diseases Program, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia.,Faculty of Medicine and Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Paul D Dalton
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Functional Materials in Medicine and Dentistry, and Bavarian Polymer Institute, University of Wuerzburg, Wuerzburg, Germany
| | - Anna V Taubenberger
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Biotec TU Dresden, Dresden, Germany
| | - Dietmar W Hutmacher
- Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,George W Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.,Institute for Advanced Study, Technical University Munich, Garching, Germany
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