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Papantoniou I, Nilsson Hall G, Loverdou N, Lesage R, Herpelinck T, Mendes L, Geris L. Turning Nature's own processes into design strategies for living bone implant biomanufacturing: a decade of Developmental Engineering. Adv Drug Deliv Rev 2021; 169:22-39. [PMID: 33290762 PMCID: PMC7839840 DOI: 10.1016/j.addr.2020.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 11/20/2020] [Accepted: 11/29/2020] [Indexed: 12/14/2022]
Abstract
A decade after the term developmental engineering (DE) was coined to indicate the use of developmental processes as blueprints for the design and development of engineered living implants, a myriad of proof-of-concept studies demonstrate the potential of this approach in small animal models. This review provides an overview of DE work, focusing on applications in bone regeneration. Enabling technologies allow to quantify the distance between in vitro processes and their developmental counterpart, as well as to design strategies to reduce that distance. By embedding Nature's robust mechanisms of action in engineered constructs, predictive large animal data and subsequent positive clinical outcomes can be gradually achieved. To this end, the development of next generation biofabrication technologies should provide the necessary scale and precision for robust living bone implant biomanufacturing.
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Affiliation(s)
- Ioannis Papantoniou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas (FORTH), Stadiou street, 26504 Patras, Greece; Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Gabriella Nilsson Hall
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Niki Loverdou
- Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; GIGA in silico medicine, University of Liège, Avenue de l'Hôpital 11 (B34), 4000 Liège, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
| | - Raphaelle Lesage
- Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
| | - Tim Herpelinck
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Luis Mendes
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Liesbet Geris
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; GIGA in silico medicine, University of Liège, Avenue de l'Hôpital 11 (B34), 4000 Liège, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
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Three-Dimensional-Printed Poly-L-Lactic Acid Scaffolds with Different Pore Sizes Influence Periosteal Distraction Osteogenesis of a Rabbit Skull. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7381391. [PMID: 32382570 PMCID: PMC7196141 DOI: 10.1155/2020/7381391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/29/2020] [Accepted: 03/17/2020] [Indexed: 12/25/2022]
Abstract
The repair of bone defects is a big challenge in reconstructive surgery. Periosteal distraction osteogenesis (PDO), as a promising technique used for bone regeneration, forms a space between the periosteum and bone cortex to regenerate the new bone merely by distracting the periosteum. In order to investigate the influence of distractor framework on the PDO, we utilized three-dimensional (3D) printing technology to fabricate three kinds of poly-L-lactic acid (PLLA) scaffolds with different pore sizes in this study. The in vitro experiments showed that the customized PLLA scaffolds had different-sized microchannels with low toxicity, good biocompatibility, and enough mechanical strength. Then, we built up an in vivo bioreactor under the skull periosteum of New Zealand white rabbits. The distractors with different pore sizes all could satisfy the demand of periosteal distraction in the animal experiments. After 8 weeks of consolidation period, the quality and quantity of the newly formed bone were improved with the increasing pore sizes of the distractors. Moreover, the newly formed bone also displayed an increasing degree of vascularization. In conclusion, 3D printing technology could promote the innovation of PDO devices and fabricate optimized scaffolds with appropriate pore sizes, shapes, and structures. It would help us regenerate more functional tissue-engineered bone and provide new ideas for further clinical application of the PDO technique.
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Angiogenic effects of mesenchymal stem cells in combination with different scaffold materials. Microvasc Res 2020; 127:103925. [DOI: 10.1016/j.mvr.2019.103925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/14/2019] [Accepted: 09/11/2019] [Indexed: 12/26/2022]
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Paré A, Bossard A, Laure B, Weiss P, Gauthier O, Corre P. Reconstruction of segmental mandibular defects: Current procedures and perspectives. Laryngoscope Investig Otolaryngol 2019; 4:587-596. [PMID: 31890875 PMCID: PMC6929581 DOI: 10.1002/lio2.325] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 10/02/2019] [Accepted: 10/21/2019] [Indexed: 11/11/2022] Open
Abstract
Background The reconstruction of segmental mandibular defects remains a challenge for the reconstructive surgeon, from both a functional and an esthetic point of view. Methods This clinical review examines the different techniques currently in use for mandibular reconstruction as related to a range of etiologies, including the different bone donor sites, the alternatives to free flaps (FFs), as well as the contribution of computer‐assisted surgery. Recent progress and the perspectives in bone tissue engineering (BTE) are also discussed. Results Osseous FF allows reliable and satisfying outcomes. However, locoregional flap, distraction osteogenesis, or even induced membrane techniques are other potential options in less favorable cases. Obtaining an engineered bone with satisfactory mechanical properties and sufficient vascular supply requires further investigations. Conclusions Osseous FF procedure remains the gold standard for segmental mandible reconstruction. BTE strategies offer promising alternatives.
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Affiliation(s)
- Arnaud Paré
- Service de Chirurgie Maxillo Faciale Plastique et Brulés, Hôpital Trousseau, CHU de Tours Tours France.,Laboratoire Regenerative Medicine and Skeleton RMeS, France INSERM, U 1229 Nantes France.,UFR Médecine Université de Tours Tours France.,UFR Odontologie Université́ de Nantes Nantes France
| | - Adeline Bossard
- ONIRIS Nantes-Atlantic College of Veterinary Medicine Centre de Rechecherche et D'investigation Préclinique (CRIP) Nantes France
| | - Boris Laure
- Service de Chirurgie Maxillo Faciale Plastique et Brulés, Hôpital Trousseau, CHU de Tours Tours France
| | - Pierre Weiss
- Laboratoire Regenerative Medicine and Skeleton RMeS, France INSERM, U 1229 Nantes France.,UFR Odontologie Université́ de Nantes Nantes France
| | - Olivier Gauthier
- Laboratoire Regenerative Medicine and Skeleton RMeS, France INSERM, U 1229 Nantes France.,ONIRIS Nantes-Atlantic College of Veterinary Medicine Centre de Rechecherche et D'investigation Préclinique (CRIP) Nantes France
| | - Pierre Corre
- Laboratoire Regenerative Medicine and Skeleton RMeS, France INSERM, U 1229 Nantes France.,UFR Odontologie Université́ de Nantes Nantes France.,Service de Chirurgie Maxillo-Faciale et Stomatologie CHU de Nantes Nantes France
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Spalthoff S, Zimmerer R, Dittmann J, Korn P, Gellrich NC, Jehn P. Scapula pre-augmentation in sheep with polycaprolactone tricalcium phosphate scaffolds. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2018; 120:116-121. [PMID: 30718212 DOI: 10.1016/j.jormas.2018.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/27/2018] [Accepted: 10/14/2018] [Indexed: 01/21/2023]
Abstract
A scapula free flap is a commonly used method to reconstruct intraoral defects of the mandible and maxilla. Despite its clear advantages, it shows some deficiencies concerning the amount and shape of the available bone, especially with respect to later implant placement. To overcome these limitations, we pre-augmented the scapula prior to a potential flap-raising procedure with polycaprolactone (PCL) tricalcium phosphate (TCP) scaffolds in a sheep model. In our study, the scapula angle was augmented with a block of PCL-TCP in three adult sheep. After 6 months, the amount of newly formed bone and scaffold degradation were evaluated using cone-beam computed tomography scans and histomorphometric analysis. All animals survived the study and showed no problems in the augmented regions. The scaffolds were attached firmly to the scapula and showed a bonelike consistency. A fair amount of the scaffold material was degraded and replaced by vital bone. Our method seems to be a valid approach to pre-augment the scapula in sheep. In further experiments, it will be interesting to determine whether it is possible to transplant a modified scapula flap to an intraoral defect site.
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Affiliation(s)
- S Spalthoff
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - R Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - J Dittmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - P Korn
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - N-C Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - P Jehn
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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Prefabrication of a functional bone graft with a pedicled periosteal flap as an in vivo bioreactor. Sci Rep 2017; 7:18038. [PMID: 29269864 PMCID: PMC5740121 DOI: 10.1038/s41598-017-17452-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 11/26/2017] [Indexed: 01/07/2023] Open
Abstract
The in vivo bioreactor principle, which focuses on using the body as a living bioreactor to cultivate stem cells, bioscaffolds, and growth factors and leveraging the body’s self-regenerative capacity to regenerate new tissue, has been considered a potential approach for bone defect reconstruction. The histological characteristics of the periosteum allow it to possess a remarkable capacity to induce bone growth and remodeling, making it suitable as an in vivo bioreactor strategy for bone graft prefabrication. The present study was designed to prefabricate vascularized bone grafts using pedicled periosteal flaps and decellularized bone matrix (DBM) scaffolds in a rabbit model. The muscular pouches created in the femoral muscle were acted as a control. Our histological results revealed that both the periosteal flap group and muscular pouch group induced bone tissue formation on the DBM surface at both 8 and 16 weeks postoperatively. However, micro-computed tomography (microCT) scanning, biomechanical, and histomorphometric findings indicated that bone grafts from the periosteal flap group showed larger bone mass, faster bone formation rates, higher vascular density, and stronger biomechanical properties than in the muscular pouch group. We suggest that using the pedicled periosteal flap as an in vivo bioreactor is a promising approach for functional bone graft prefabrication.
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In vivo tissue engineered bone versus autologous bone: stability and structure. Int J Oral Maxillofac Surg 2017; 46:385-393. [DOI: 10.1016/j.ijom.2016.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 07/26/2016] [Accepted: 10/25/2016] [Indexed: 11/17/2022]
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Huang RL, Kobayashi E, Liu K, Li Q. Bone Graft Prefabrication Following the In Vivo Bioreactor Principle. EBioMedicine 2016; 12:43-54. [PMID: 27693103 PMCID: PMC5078640 DOI: 10.1016/j.ebiom.2016.09.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 08/11/2016] [Accepted: 09/16/2016] [Indexed: 01/31/2023] Open
Abstract
Large bone defect treatment represents a great challenge due to the difficulty of functional and esthetic reconstruction. Tissue-engineered bone grafts created by in vitro manipulation of bioscaffolds, seed cells, and growth factors have been considered potential treatments for bone defect reconstruction. However, a significant gap remains between experimental successes and clinical translation. An emerging strategy for bridging this gap is using the in vivo bioreactor principle and flap prefabrication techniques. This principle focuses on using the body as a bioreactor to cultivate the traditional triad (bioscaffolds, seed cells, and growth factors) and leveraging the body's self-regenerative capacity to regenerate new tissue. Additionally, flap prefabrication techniques allow the regenerated bone grafts to be transferred as prefabricated bone flaps for bone defect reconstruction. Such a strategy has been used successfully for reconstructing critical-sized bone defects in animal models and humans. Here, we highlight this concept and provide some perspective on how to translate current knowledge into clinical practice. The in vivo bioreactor principle and flap prefabrication technique is a promising strategy for bone defect reconstruction. The in vivo bioreactor principle focuses on using the body’s self-regenerative capacity to regenerate new tissue. This strategy has been successfully used to reconstruct critical-sized bone defects in humans.
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Affiliation(s)
- Ru-Lin Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Eiji Kobayashi
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan
| | - Kai Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, China.
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Wang Z, Hu H, Li Z, Weng Y, Dai T, Zong C, Liu Y, Liu B. Sheet of osteoblastic cells combined with platelet-rich fibrin improves the formation of bone in critical-size calvarial defects in rabbits. Br J Oral Maxillofac Surg 2016; 54:316-21. [DOI: 10.1016/j.bjoms.2015.12.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 12/17/2015] [Indexed: 01/01/2023]
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Genova T, Munaron L, Carossa S, Mussano F. Overcoming physical constraints in bone engineering: ‘the importance of being vascularized’. J Biomater Appl 2015; 30:940-51. [DOI: 10.1177/0885328215616749] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bone plays several physiological functions and is the second most commonly transplanted tissue after blood. Since the treatment of large bone defects is still unsatisfactory, researchers have endeavoured to obtain scaffolds able to release growth and differentiation factors for mesenchymal stem cells, osteoblasts and endothelial cells in order to obtain faster mineralization and prompt a reliable vascularization. Nowadays, the application of osteoblastic cultures spans from cell physiology and pharmacology to cytocompatibility measurement and osteogenic potential evaluation of novel biomaterials. To overcome the simple traditional monocultures in vitro, co-cultures of osteogenic and vasculogenic precursors were introduced with very interesting results. Increasingly complex culture systems have been developed, where cells are seeded on proper scaffolds and stimulated so as to mimic the physiological conditions more accurately. These bioreactors aim at enabling bone regeneration by incorporating different cells types into bio-inspired materials within a surveilled habitat. This review is focused on the most recent developments in the organomimetic cultures of osteoblasts and vascular endothelial cells for bone tissue engineering.
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Affiliation(s)
- T Genova
- Department of Life Sciences and Systems Biology, University of Turin, Italy
- C.I.R. Dental School, Department of Surgical Sciences, University of Turin, Italy
| | - L Munaron
- Department of Life Sciences and Systems Biology, University of Turin, Italy
| | - S Carossa
- C.I.R. Dental School, Department of Surgical Sciences, University of Turin, Italy
| | - F Mussano
- C.I.R. Dental School, Department of Surgical Sciences, University of Turin, Italy
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Weigand A, Beier JP, Hess A, Gerber T, Arkudas A, Horch RE, Boos AM. Acceleration of vascularized bone tissue-engineered constructs in a large animal model combining intrinsic and extrinsic vascularization. Tissue Eng Part A 2015; 21:1680-94. [PMID: 25760576 DOI: 10.1089/ten.tea.2014.0568] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
During the last decades, a range of excellent and promising strategies in Bone Tissue Engineering have been developed. However, the remaining major problem is the lack of vascularization. In this study, extrinsic and intrinsic vascularization strategies were combined for acceleration of vascularization. For optimal biomechanical stability of the defect site and simplifying future transition into clinical application, a primary stable and approved nanostructured bone substitute in clinically relevant size was used. An arteriovenous (AV) loop was microsurgically created in sheep and implanted, together with the bone substitute, in either perforated titanium chambers (intrinsic/extrinsic) for different time intervals of up to 18 weeks or isolated Teflon(®) chambers (intrinsic) for 18 weeks. Over time, magnetic resonance imaging and micro-computed tomography (CT) analyses illustrate the dense vascularization arising from the AV loop. The bone substitute was completely interspersed with newly formed tissue after 12 weeks of intrinsic/extrinsic vascularization and after 18 weeks of intrinsic/extrinsic and intrinsic vascularization. Successful matrix change from an inorganic to an organic scaffold could be demonstrated in vascularized areas with scanning electron microscopy and energy dispersive X-ray spectroscopy. Using the intrinsic vascularization method only, the degradation of the scaffold and osteoclastic activity was significantly lower after 18 weeks, compared with 12 and 18 weeks in the combined intrinsic-extrinsic model. Immunohistochemical staining revealed an increase in bone tissue formation over time, without a difference between intrinsic/extrinsic and intrinsic vascularization after 18 weeks. This study presents the combination of extrinsic and intrinsic vascularization strategies for the generation of an axially vascularized bone substitute in clinically relevant size using a large animal model. The additional extrinsic vascularization promotes tissue ingrowth and remodeling processes of the bone substitute. Extrinsic vessels contribute to faster vascularization and finally anastomose with intrinsic vasculature, allowing microvascular transplantation of the bone substitute after a shorter prevascularization time than using the intrinsic method only. It can be reasonably assumed that the usage of perforated chambers can significantly reduce the time until transplantation of bone constructs. Finally, this study paves the way for further preclinical testing for proof of the concept as a basis for early clinical applicability.
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Affiliation(s)
- Annika Weigand
- 1 Department of Plastic and Hand Surgery, University Hospital of Erlangen , Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
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Smith BD, Grande DA. The current state of scaffolds for musculoskeletal regenerative applications. Nat Rev Rheumatol 2015; 11:213-22. [DOI: 10.1038/nrrheum.2015.27] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Jagodzinski M, Kokemüller H, Jehn P, Vogt P, Gellrich NC, Krettek C. Präfabrikation von Knochentransplantaten. Chirurg 2015; 86:259-62. [DOI: 10.1007/s00104-014-2885-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Abstract
Large mandibular defects are difficult to reconstruct with good functional and aesthetic outcomes because of the complex geometry of craniofacial bone. While the current gold standard is free tissue flap transfer, this treatment is limited in fidelity by the shape of the harvested tissue and can result in significant donor site morbidity. To address these problems, in vivo bioreactors have been explored as an approach to generate autologous prefabricated tissue flaps. These bioreactors are implanted in an ectopic site in the body, where ossified tissue grows into the bioreactor in predefined geometries and local vessels are recruited to vascularize the developing construct. The prefabricated flap can then be harvested with vessels and transferred to a mandibular defect for optimal reconstruction. The objective of this review article is to introduce the concept of the in vivo bioreactor, describe important preclinical models in the field, summarize the human cases that have been reported through this strategy, and offer future directions for this exciting approach.
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Affiliation(s)
- A M Tatara
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - M E Wong
- Department of Oral and Maxillofacial Surgery, University of Texas Dental Branch at Houston, Houston, Texas, USA
| | - A G Mikos
- Department of Bioengineering, Rice University, Houston, Texas, USA
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Alexander PG, Gottardi R, Lin H, Lozito TP, Tuan RS. Three-dimensional osteogenic and chondrogenic systems to model osteochondral physiology and degenerative joint diseases. Exp Biol Med (Maywood) 2014; 239:1080-95. [PMID: 24994814 DOI: 10.1177/1535370214539232] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Tissue engineered constructs have the potential to function as in vitro pre-clinical models of normal tissue function and disease pathogenesis for drug screening and toxicity assessment. Effective high throughput assays demand minimal systems with clearly defined performance parameters. These systems must accurately model the structure and function of the human organs and their physiological response to different stimuli. Musculoskeletal tissues present unique challenges in this respect, as they are load-bearing, matrix-rich tissues whose functionality is intimately connected to the extracellular matrix and its organization. Of particular clinical importance is the osteochondral junction, the target tissue affected in degenerative joint diseases, such as osteoarthritis (OA), which consists of hyaline articular cartilage in close interaction with subchondral bone. In this review, we present an overview of currently available in vitro three-dimensional systems for bone and cartilage tissue engineering that mimic native physiology, and the utility and limitations of these systems. Specifically, we address the need to combine bone, cartilage and other tissues to form an interactive microphysiological system (MPS) to fully capture the biological complexity and mechanical functions of the osteochondral junction of the articular joint. The potential applications of three-dimensional MPSs for musculoskeletal biology and medicine are highlighted.
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Affiliation(s)
- Peter G Alexander
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, 15219 USA
| | - Riccardo Gottardi
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, 15219 USA Ri.MED Foundation, Palermo, I-90133 Italy
| | - Hang Lin
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, 15219 USA
| | - Thomas P Lozito
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, 15219 USA
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, 15219 USA Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA 15261, USA Department of Mechanical Engineering and Materials Science, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA 15261, USA
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