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Monteiro JL, Takusagawa T, Sampaio GC, He H, de Oliveira E Silva ED, Vasconcelos BCE, McCain JP, Redmond RW, Randolph MA, Guastaldi FPS. Gelatin methacryloyl hydrogel with and without dental pulp stem cells for TMJ regeneration: An in vivo study in rabbits. J Oral Rehabil 2024; 51:394-403. [PMID: 37830126 DOI: 10.1111/joor.13608] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/21/2023] [Accepted: 10/04/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND In the last decade, tissue-engineering strategies for regenerating the temporomandibular joint (TMJ) have been investigated. This may be a promising strategy for the minimally invasive restoration of joint integrity. OBJECTIVES To evaluate whether dental pulp stem cells (DPSCs) loaded in a light-occured hydrogel made of gelatin methacryloyl (GelMA) enhance the regeneration of osteochondral defects in the rabbit TMJ. MATERIALS AND METHODS Defects were filled with GelMA alone (control group; n = 4) or filled with GelMA loaded with rabbit DPSCs (experimental group; n = 4), In one group, the TMJ capsule was opened without creating a defect (sham group; n = 2). The following micro-CT parameters were analysed: bone volume to total volume ratio (BV/TV%) and bone mineral density (BMD). Histological evaluation was performed to assess cartilage regeneration features. A semi-quantitative scoring system was also used to evaluate the defects. RESULTS All groups had no statistical difference regarding the micro-CT parameters. The highest mean healing score was found for the experimental group. After 4 weeks, there were no signs of hydrogel in either group or no signs of inflammation in the adjacent tissues. The tissue formed in the defect was dense fibrous connective tissue. CONCLUSION Adding DPSCs to GelMA did not provide a regenerative enhancement in TMJ osteochondral defects. This resulted in similar micro-CT parameters after 4 weeks of healing, with improved signs of subchondral bone regeneration but no cartilage regeneration.
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Affiliation(s)
- Joao Luiz Monteiro
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
- Department of Oral and Maxillofacial Surgery, Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Toru Takusagawa
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Gerhilde C Sampaio
- Department of Oral Medicine, Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Helen He
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | | | - Belmiro C E Vasconcelos
- Department of Oral and Maxillofacial Surgery, Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Joseph P McCain
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Robert W Redmond
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Mark A Randolph
- Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Fernando P S Guastaldi
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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Du Y, Chen M, Jiang J, Wang L, Wu G, Feng J. Hst1/Gel-MA Scaffold Significantly Promotes the Quality of Osteochondral Regeneration in the Temporomandibular Joint. J Funct Biomater 2023; 14:513. [PMID: 37888178 PMCID: PMC10607535 DOI: 10.3390/jfb14100513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/28/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023] Open
Abstract
OBJECTIVE Our aim was to evaluate the capacity of the human salivary histatin-1-functionalized methacrylic gelatin scaffold to control osteochondral tissue regeneration and repair in vivo in rabbits with major temporomandibular joint dimensional abnormalities. MATERIALS AND METHODS In order to compare human salivary histatin-1-functionalized methacrylic gelatin scaffolds to the Blank and Gel-MA hydrogel groups, scaffolds were implanted into osteochondral lesions of a critical size (3 × 3 mm) in the anterior region of the condyle of the temporomandibular joint in New Zealand white rabbits. At 4 weeks after implantation, the repair was evaluated using macroscopic examination, histology, and micro-CT analysis. RESULTS In the comparison of the composite scaffold group with the Blank and Gel-MA groups, analysis of the healed tissue revealed an improved macroscopic appearance in the composite scaffold group. Regeneration was induced by host cell migration in the Hst1/Gel-MA scaffold group. CONCLUSIONS The current study offers a viable method for in vivo cartilage repair that does not require cell transplantation. Future clinical applications of this strategy's optimization have many potential advantages.
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Affiliation(s)
- Yiyang Du
- School/Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (M.C.); (J.J.)
| | - Menghan Chen
- School/Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (M.C.); (J.J.)
| | - Jing Jiang
- School/Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (M.C.); (J.J.)
| | - Lei Wang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China;
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), 1081 LA Amsterdam, The Netherlands
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, 1081 LA Amsterdam, The Netherlands
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), 1081 LA Amsterdam, The Netherlands
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, 1081 LA Amsterdam, The Netherlands
| | - Jianying Feng
- School/Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (M.C.); (J.J.)
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Dickerson DA, Fortier LA, Nauman EA, Potter HG, Quinlan C. Novel Osteochondral Biotemplate Improves Long-term Cartilage Repair Compared With Microfracture in an Ovine Model. Am J Sports Med 2023; 51:3288-3303. [PMID: 37602735 DOI: 10.1177/03635465231189808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
BACKGROUND Current cartilage repair therapies do not re-create the complex mechanical interface between cartilage and bone, which is critical for long-term repair durability. New biomaterial designs that include hard tissue-soft tissue interface structures offer promise to improve clinical outcomes. PURPOSE/HYPOTHESIS The purpose of this study was to evaluate the efficacy and safety of a naturally derived osteochondral biotemplate with a novel contiguous hard tissue-soft tissue interface in an ovine model as a regenerative solution for articular cartilage defects. It was hypothesized that the osteochondral biotemplate would produce structurally superior repair tissue compared with microfracture over a 13-month period. STUDY DESIGN Controlled laboratory study. METHODS Osteochondral biotemplates were manufactured from porcine cancellous bone. Skeletally mature sheep (N = 30) were randomly allocated to 3 groups: early healing stage (euthanasia at 4 months), 6-month treatment, and 13-month treatment. In the early healing stage group, an 8 mm-diameter by 5 mm-deep osteochondral defect was created on the medial femoral condyle and treated at the time of iatrogenic injury with an osteochondral biotemplate. The contralateral limb received the same treatment 2 months later. In the 6- and 13-month treatment groups, 1 limb received the same osteochondral procedure as the early healing stage group. In the contralateral limb, an 8 mm-diameter, full-thickness cartilage defect (1-2 mm deep) was created and treated with microfracture. Cartilage repair and integration were quantitatively and qualitatively assessed with gross inspection, histological evaluation, and magnetic resonance imaging (MRI). Wilcoxon signed-rank and McNemar tests were used to compare the treatments. RESULTS At 6 and 13 months after treatment, the biotemplate was not present histologically. At 13 months, the biotemplate treatment demonstrated statistically higher histological scores than microfracture for integration with surrounding cartilage (biotemplate: 74 ± 31; microfracture: 28 ± 39; P = .03), type 2 collagen (biotemplate: 72 ± 33; microfracture: 40 ± 38; P = .02), total cartilage (biotemplate: 71 ± 9; microfracture: 59 ± 9; P = .01), and total integration (biotemplate: 85 ± 15; microfracture: 66 ± 20; P = .04). The osteochondral biotemplate treatment produced a notable transient nonneutrophilic inflammatory response that appeared to approach resolution at 13 months. MRI results were not statistically different between the 2 treatments. CONCLUSION Even with the inflammatory response, after 13 months, the osteochondral biotemplate outperformed microfracture in cartilage regeneration and demonstrated superiority in integration between the repair tissue and host tissue as well as integration between the newly formed cartilage and the underlying bone. CLINICAL RELEVANCE This work has demonstrated the clinical potential of a novel biomaterial template to regenerate the complex mechanical interface between cartilage and the subchondral bone.
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Affiliation(s)
- Darryl A Dickerson
- Department of Mechanical and Materials Engineering, Florida International University, Miami, Florida, USA
| | - Lisa A Fortier
- Department of Clinical Sciences, Cornell University, Ithaca, New York, USA
| | - Eric A Nauman
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA
| | - Hollis G Potter
- Department of Radiology and Imaging, Hospital for Special Surgery, New York, New York, USA
- Department of Radiology, Weill Cornell Medical College, New York, New York, USA
| | - Cassandra Quinlan
- Department of Clinical Sciences, Cornell University, Ithaca, New York, USA
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Peng Y, Zhuang Y, Liu Y, Le H, Li D, Zhang M, Liu K, Zhang Y, Zuo J, Ding J. Bioinspired gradient scaffolds for osteochondral tissue engineering. EXPLORATION (BEIJING, CHINA) 2023; 3:20210043. [PMID: 37933242 PMCID: PMC10624381 DOI: 10.1002/exp.20210043] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/05/2023] [Indexed: 11/08/2023]
Abstract
Repairing articular osteochondral defects present considerable challenges in self-repair due to the complex tissue structure and low proliferation of chondrocytes. Conventional clinical therapies have not shown significant efficacy, including microfracture, autologous/allograft osteochondral transplantation, and cell-based techniques. Therefore, tissue engineering has been widely explored in repairing osteochondral defects by leveraging the natural regenerative potential of biomaterials to control cell functions. However, osteochondral tissue is a gradient structure with a smooth transition from the cartilage to subchondral bone, involving changes in chondrocyte morphologies and phenotypes, extracellular matrix components, collagen type and orientation, and cytokines. Bioinspired scaffolds have been developed by simulating gradient characteristics in heterogeneous tissues, such as the pores, components, and osteochondrogenesis-inducing factors, to satisfy the anisotropic features of osteochondral matrices. Bioinspired gradient scaffolds repair osteochondral defects by altering the microenvironments of cell growth to induce osteochondrogenesis and promote the formation of osteochondral interfaces compared with homogeneous scaffolds. This review outlines the meaningful strategies for repairing osteochondral defects by tissue engineering based on gradient scaffolds and predicts the pros and cons of prospective translation into clinical practice.
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Affiliation(s)
- Yachen Peng
- Department of OrthopedicsChina‐Japan Union Hospital of Jilin UniversityChangchunP. R. China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Yaling Zhuang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Yang Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
- Institute of BioengineeringÉcole Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland
| | - Hanxiang Le
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Di Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Mingran Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Kai Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
| | - Yanbo Zhang
- Department of OrthopedicsChina‐Japan Union Hospital of Jilin UniversityChangchunP. R. China
| | - Jianlin Zuo
- Department of OrthopedicsChina‐Japan Union Hospital of Jilin UniversityChangchunP. R. China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefeiP. R. China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunP. R. China
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Nedrelow DS, Rassi A, Ajeeb B, Jones CP, Huebner P, Ritto FG, Williams WR, Fung KM, Gildon BW, Townsend JM, Detamore MS. Regenerative Engineering of a Biphasic Patient-Fitted Temporomandibular Joint Condylar Prosthesis. Tissue Eng Part C Methods 2023; 29:307-320. [PMID: 37335050 PMCID: PMC10402699 DOI: 10.1089/ten.tec.2023.0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/01/2023] [Indexed: 06/21/2023] Open
Abstract
Regenerative medicine approaches to restore the mandibular condyle of the temporomandibular joint (TMJ) may fill an unmet patient need. In this study, a method to implant an acellular regenerative TMJ prosthesis was developed for orthotopic implantation in a pilot goat study. The scaffold incorporated a porous, polycaprolactone-hydroxyapatite (PCL-HAp, 20wt% HAp) 3D printed condyle with a cartilage-matrix-containing hydrogel. A series of material characterizations was used to determine the structure, fluid transport, and mechanical properties of 3D printed PCL-HAp. To promote marrow uptake for cell seeding, a scaffold pore size of 152 ± 68 μm resulted in a whole blood transport initial velocity of 3.7 ± 1.2 mm·s-1 transported to the full 1 cm height. The Young's modulus of PCL was increased by 67% with the addition of HAp, resulting in a stiffness of 269 ± 20 MPa for etched PCL-HAp. In addition, the bending modulus increased by 2.06-fold with the addition of HAp to 470 MPa for PCL-HAp. The prosthesis design with an integrated hydrogel was compared with unoperated contralateral control and no-hydrogel group in a goat model for 6 months. A guide was used to make the condylectomy cut, and the TMJ disc was preserved. MicroCT assessment of bone suggested variable tissue responses with some regions of bone growth and loss, although more loss may have been exhibited by the hydrogel group than the no-hydrogel group. A benchtop load transmission test suggested that the prosthesis was not shielding load to the underlying bone. Although variable, signs of neocartilage formation were exhibited by Alcian blue and collagen II staining on the anterior, functional surface of the condyle. Overall, this study demonstrated signs of functional TMJ restoration with an acellular prosthesis. There were apparent limitations to continuous, reproducible bone formation, and stratified zonal cartilage regeneration. Future work may refine the prosthesis design for a regenerative TMJ prosthesis amenable to clinical translation.
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Affiliation(s)
- David S. Nedrelow
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, USA
- College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Ali Rassi
- School of Industrial and Systems Engineering, University of Oklahoma, Norman, Oklahoma, USA
| | - Boushra Ajeeb
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, USA
| | - Cameron P. Jones
- College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Pedro Huebner
- School of Industrial and Systems Engineering, University of Oklahoma, Norman, Oklahoma, USA
| | - Fabio G. Ritto
- Department of Oral and Maxillofacial Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Wendy R. Williams
- Division of Comparative Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Kar-Ming Fung
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Bradford W. Gildon
- Department of Medical Imaging and Radiation Sciences, University of Oklahoma College of Allied Health, Oklahoma City, Oklahoma, USA
| | - Jakob M. Townsend
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, USA
| | - Michael S. Detamore
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, USA
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Wang D, Qi Y, Wang Z, Guo A, Xu Y, Zhang Y. Recent Advances in Animal Models, Diagnosis, and Treatment of Temporomandibular Joint Osteoarthritis. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:62-77. [PMID: 35994388 DOI: 10.1089/ten.teb.2022.0065] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Temporomandibular joint osteoarthritis (TMJOA) is a gradual degenerative jaw joint condition. Until recent years, TMJOA is still relatively unrecognized and ineffective to be treated. Appropriate animal models with reliable detection methods can help researchers understand the pathophysiology of TMJOA and find therapeutic options. In this study, we summarized common animal models of TMJOA created by chemical, surgical, mechanical, and genetical approaches. The relevant pathological symptoms and induction mechanisms were outlined. In addition, different pathological indicators, furthermore, emerging therapeutic regimens, such as intra-articular drug delivery and tissue engineering-based approaches to treat TMJOA based on these animal models, were summarized and updated. Understanding the physiology and pathogenesis of the TMJOA, together using various ways to diagnose the TMJOA, were elaborated, including imaging techniques, molecular techniques for detecting inflammatory cytokines, histochemical staining, and histomorphometry measures. A more reliable diagnosis will enable the development of new prevention and more effective treatment strategies and thereby improve the quality of life of TMJOA patients. Impact statement Temporomandibular joint osteoarthritis (TMJOA) affects 8 to 16 percent of the population worldwide. However, TMJOA is still relatively unrecognized and ineffective to be treated in the clinic. Appropriate animal models with reliable diagnostic methods can help researchers understand the pathophysiology of TMJOA and find therapeutic options. We herein summarized common animal models of TMJOA and various ways to diagnose the TMJOA. More importantly, emerging therapeutic regimens to treat TMJOA based on these animal models were summarized. With the aid of strategies listed, more effective treatment strategies will be developed and thereby improve the life quality of TMJOA patients.
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Affiliation(s)
- Dongyun Wang
- Stomatological Center of Peking University Shenzhen Hospital, Guangdong Provincial High-level Clinical Key Specialty, Guangdong Province Engineering Research Center of Oral Disease Diagnosis and Treatment, Shenzhen, China
| | - Yajie Qi
- Stomatological Center of Peking University Shenzhen Hospital, Guangdong Provincial High-level Clinical Key Specialty, Guangdong Province Engineering Research Center of Oral Disease Diagnosis and Treatment, Shenzhen, China.,Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
| | - Zhubing Wang
- School of Dentistry, Health Science Center, Shenzhen University, Shenzhen, China
| | - Anyun Guo
- Department of Joint Surgery, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Yingxin Xu
- Stomatological Center of Peking University Shenzhen Hospital, Guangdong Provincial High-level Clinical Key Specialty, Guangdong Province Engineering Research Center of Oral Disease Diagnosis and Treatment, Shenzhen, China
| | - Yang Zhang
- School of Dentistry, Health Science Center, Shenzhen University, Shenzhen, China
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Liu Y, Zhang Z, Wang B, Dong Y, Zhao C, Zhao Y, Zhang L, Liu X, Guo J, Chen Y, Zhou J, Yang T, Wang Y, Liu H, Wang S. Inflammation-Stimulated MSC-Derived Small Extracellular Vesicle miR-27b-3p Regulates Macrophages by Targeting CSF-1 to Promote Temporomandibular Joint Condylar Regeneration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107354. [PMID: 35277920 DOI: 10.1002/smll.202107354] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 02/05/2022] [Indexed: 05/10/2023]
Abstract
Small extracellular vesicles (sEVs) secreted by mesenchymal stem cells (MSCs) have been extensively studied in recent years. sEV contents change with the secreting cell state. When MSCs are exposed to an inflammatory environment, they release more functional growth factors, exosomes, and chemokines. Herein, MSCs are stimulated to alter sEV cargos and functions to regulate the inflammatory microenvironment and promote tissue regeneration. Sequencing of sEV miRNAs shows that certain RNAs conducive to cell function are upregulated. In this study, in vitro cell function experiments show that both inflammation-stimulated adipose-derived MSC (ADSC)-derived sEV (IAE) and normal ADSC-derived sEV (AE) promote cell proliferation; IAE also significantly improves cell migration. Regarding macrophage polarization regulation, IAE significantly promotes M2 macrophage differentiation. RNA-sequencing analysis indicates that high miR-27b-3p expression levels in IAE may regulate macrophages by targeting macrophage colony-stimulating factor-1 (CSF-1). In vivo, a rabbit temporomandibular joint (TMJ) condylar osteochondral defect model shows that both AE and IAE promote TMJ regeneration, with IAE having the most significant therapeutic effect. Therefore, the authors confirm that exposing MSCs to an inflammatory environment can feasibly enhance sEV functions and that modified sEVs achieve better therapeutic effects.
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Affiliation(s)
- Yufei Liu
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Zhiling Zhang
- Department of Occlusion and Temporomandibular Joint Diseases, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300041, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
| | - Biao Wang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yunsheng Dong
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Congrui Zhao
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yanhong Zhao
- Hospital of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | - Lin Zhang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Xiangsheng Liu
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jingyue Guo
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yuehua Chen
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jie Zhou
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Tingting Yang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yanying Wang
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
- Department of Implantology, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300041, China
| | - Hao Liu
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
- Department of Oral and Maxillofacial Surgery, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300041, China
| | - Shufang Wang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
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A review of composition‐structure‐function properties and tissue engineering strategies of articular cartilage: compare condyle process and knee‐joint. ADVANCED ENGINEERING MATERIALS 2022. [DOI: 10.1002/adem.202200304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Higuera GA, Ramos T, Gloria A, Ambrosio L, Di Luca A, Pechkov N, de Wijn JR, van Blitterswijk CA, Moroni L. PEOT/PBT Polymeric Pastes to Fabricate Additive Manufactured Scaffolds for Tissue Engineering. Front Bioeng Biotechnol 2021; 9:704185. [PMID: 34595158 PMCID: PMC8476768 DOI: 10.3389/fbioe.2021.704185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
The advantages of additive manufactured scaffolds, as custom-shaped structures with a completely interconnected and accessible pore network from the micro- to the macroscale, are nowadays well established in tissue engineering. Pore volume and architecture can be designed in a controlled fashion, resulting in a modulation of scaffold’s mechanical properties and in an optimal nutrient perfusion determinant for cell survival. However, the success of an engineered tissue architecture is often linked to its surface properties as well. The aim of this study was to create a family of polymeric pastes comprised of poly(ethylene oxide therephthalate)/poly(butylene terephthalate) (PEOT/PBT) microspheres and of a second biocompatible polymeric phase acting as a binder. By combining microspheres with additive manufacturing technologies, we produced 3D scaffolds possessing a tailorable surface roughness, which resulted in improved cell adhesion and increased metabolic activity. Furthermore, these scaffolds may offer the potential to act as drug delivery systems to steer tissue regeneration.
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Affiliation(s)
- Gustavo A Higuera
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Tiago Ramos
- Institute of Ophthalmology, University College of London, London, United Kingdom
| | - Antonio Gloria
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Andrea Di Luca
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Nicholas Pechkov
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Joost R de Wijn
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Clemens A van Blitterswijk
- MERLN Institute for Technology-inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, Netherlands
| | - Lorenzo Moroni
- MERLN Institute for Technology-inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, Netherlands
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Deng C, Yang J, He H, Ma Z, Wang W, Zhang Y, Li T, He C, Wang J. 3D bio-printed biphasic scaffolds with dual modification of silk fibroin for the integrated repair of osteochondral defects. Biomater Sci 2021; 9:4891-4903. [PMID: 34047307 DOI: 10.1039/d1bm00535a] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Repair of osteochondral defects is still a challenge, especially the regeneration of hyaline cartilage. Parathyroid hormone (PTH) can inhibit the hypertrophy of chondrocytes to maintain the phenotype of hyaline cartilage. Here, we aimed to construct a bio-printed biphasic scaffold with a mechanical gradient based on dual modification of silk fibroin (SF) for the integrated repair of osteochondral defects. Briefly, SF was grafted with PTH (SF-PTH) and covalently immobilized with methacrylic anhydride (SF-MA), respectively. Next, gelatin methacryloyl (GM) mixed with SF-PTH or SF-MA was used as a bio-ink for articular cartilage and subchondral bone regeneration. Finally, the GM + SF-PTH/GM + SF-MA osteochondral biphasic scaffold was constructed using 3D bioprinting technology, and implanted in a rabbit osteochondral defect model. In this study, the SF-PTH bio-ink was synthesized for the first time. In vitro results indicated that the GM + SF-MA bio-ink had good mechanical properties, while the GM + SF-PTH bio-ink inhibited the hypertrophy of chondrocytes and was beneficial for the production of hyaline cartilage extracellular matrix. Importantly, an integrated GM + SF-PTH/GM + SF-MA biphasic scaffold with a mechanical gradient was successfully constructed. The results in vivo demonstrated that the GM + SF-PTH/GM + SF-MA scaffold could promote the regeneration of osteochondral defects and maintain the phenotype of hyaline cartilage to a large extent. Collectively, our results indicate that the integrated GM + SF-PTH/GM + SF-MA biphasic scaffold constructed by 3D bioprinting is expected to become a new strategy for the treatment of osteochondral defects.
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Affiliation(s)
- Changxu Deng
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Jin Yang
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999, People North Road, Shanghai 201620, China.
| | - Hongtao He
- The Third Ward of Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, No. 467, Zhongshan Road, Shahekou District, Dalian 116000, Liaoning Province, China
| | - Zhenjiang Ma
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Wenhao Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Yuxin Zhang
- Department of Rehabilitation Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai JiaoTong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Tao Li
- Department of Orthopaedics, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665 Kongjiang Road, Shanghai, 200092, China
| | - Chuanglong He
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999, People North Road, Shanghai 201620, China.
| | - Jinwu Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China. and Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, No. 1956 Huashan Road, Shanghai, 200030, China
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11
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Shi C, Yao Y, Wang L, Sun P, Feng J, Wu G. Human Salivary Histatin-1-Functionalized Gelatin Methacrylate Hydrogels Promote the Regeneration of Cartilage and Subchondral Bone in Temporomandibular Joints. Pharmaceuticals (Basel) 2021; 14:ph14050484. [PMID: 34069458 PMCID: PMC8159088 DOI: 10.3390/ph14050484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/08/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023] Open
Abstract
The avascular structure and lack of regenerative cells make the repair of osteochondral defects in the temporomandibular joint (TMJ) highly challenging in the clinic. To provide a viable treatment option, we developed a methacrylated gelatin (Gel-MA) hydrogel functionalized with human salivary histatin-1 (Hst1). Gel-MA is highly biocompatible, biodegradable, and cost-effective. Hst1 is capable of activating a series of cell activities, such as adhesion, migration, differentiation, and angiogenesis. To evaluate the efficacy of Hst1/Gel-MA, critical-size osteochondral defects (3 mm in diameter and 3 mm in depth) of TMJ in New Zealand white rabbits were surgically created and randomly assigned to one of the three treatment groups: (1) control (no filling material); (2) Gel-MA hydrogel; (3) Hst1/Gel-MA hydrogel. Samples were retrieved 1, 2, and 4 weeks post-surgery and subjected to gross examination and a series of histomorphometric and immunological analyses. In comparison with the control and Gel-MA alone groups, Hst1/Gel-MA hydrogel was associated with significantly higher International Cartilage Repair Society score, modified O’Driscoll score, area percentages of newly formed bone, cartilage, collagen fiber, and glycosaminoglycan, and expression of collagen II and aggrecan. In conclusion, Hst1/Gel-MA hydrogels significantly enhance bone and cartilage regeneration, thus bearing promising application potential for repairing osteochondral defects.
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Affiliation(s)
- Changjing Shi
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yu Yao
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Lei Wang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, 1081 LA Amsterdam, The Netherlands
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), 1081 LA Amsterdam, The Netherlands
| | - Ping Sun
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, The Affiliated Hospital of Stomatology School of Stomatology, Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Jianying Feng
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Gang Wu
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, 1081 LA Amsterdam, The Netherlands
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), 1081 LA Amsterdam, The Netherlands
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12
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Wang C, Wang Y, Wang C, Shi J, Wang H. Research progress on tissue engineering in repairing tempomandibular joint. Zhejiang Da Xue Xue Bao Yi Xue Ban 2021; 50:212-221. [PMID: 34137227 PMCID: PMC8710277 DOI: 10.3724/zdxbyxb-2021-0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
Temporomandibular joint osteoarthritis (TMJOA) is mainly manifested as perforation of temporomandibular joint disc (TMJD) and destruction of condylar osteochondral complex (COCC). In recent years, tissue engineering technology has become one of the effective strategies in repairing this damage. With the development of scaffold material technology, composite scaffolds have become an important means to optimize the performance of scaffolds with the combined advantages of natural materials and synthetic materials. The gelling method with the minimally invasive concept can greatly solve the problems of surgical trauma and material anastomosis, which is beneficial to the clinical transformation of temporomandibular joint tissue engineering. Extracellular matrix scaffolds technology can solve the problem of scaffold source and maximize the simulation of the extracellular environment, which provides an important means for the transformation of temporo joint tissue engineering to animal level. Due to the limitation of the source and amplification of costal chondrocytes, the use of mesenchymal stem cells from different sources has been widely used for temporomandibular joint tissue engineering. The fibrochondral stem cells isolated from surface layer of articular cartilage may provide one more suitable cell source. Transforming growth factor β superfamily, due to its osteochondrogenesis activity has been widely used in tissue engineering, and platelet-rich derivative as a convenient preparation of compound biological factor, gradually get used in temporomandibular joint tissue engineering. With the deepening of research on extracellular microenvironment and mechanical stimulation, mesenchymal stem cells, exosomes and stress stimulation are increasingly being used to regulate the extracellular microenvironment. In the future, the combination of complex bioactive factors and certain stress stimulation may become a trend in the temporomandibular joint tissue engineering research. In this article, the progress on tissue engineering in repairing COCC and TMJD, especially in scaffold materials, seed cells and bioactive factors, are reviewed, so as to provide information for future research design and clinical intervention.
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Amann E, Amirall A, Franco AR, Poh PSP, Sola Dueñas FJ, Fuentes Estévez G, Leonor IB, Reis RL, Griensven M, Balmayor ER. A Graded, Porous Composite of Natural Biopolymers and Octacalcium Phosphate Guides Osteochondral Differentiation of Stem Cells. Adv Healthc Mater 2021; 10:e2001692. [PMID: 33448144 DOI: 10.1002/adhm.202001692] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/19/2020] [Indexed: 01/08/2023]
Abstract
Lesions involving the osteochondral unit are difficult to treat. Biomimetic scaffolds are previously shown as promising alternative. Such devices often lack multiple functional layers that mimic bone, cartilage, and the interface. In this study, multilayered scaffolds are developed based on the use of natural extracellular matrix (ECM)-like biopolymers. Particular attention is paid to obtain a complex matrix that mimics the native osteochondral transition. Porous, sponge-like chitosan-collagen-octacalcium phosphate (OCP) scaffolds are obtained. Collagen content increases while the amount of OCP particles decreases toward the cartilage layer. The scaffolds are bioactive as a mineral layer is deposited containing hydroxyapatite at the bony side. The scaffolds stimulate proliferation of human adipose-derived mesenchymal stem cells, but the degree of proliferation depends on the cell seeding density. The scaffolds give rise to a zone-specific gene expression. RUNX2, COL1A1, BGLAP, and SPP1 are upregulated in the bony layer of the scaffold. SOX9 is upregulated concomitant with COL2A1 expression in the cartilage zone. Mineralization in presence of the cells is prominent in the bone area with Ca and P steadily increasing over time. These results are encouraging for the fabrication of biomimetic scaffolds using ECM-like materials and featuring gradients that mimic native tissues and their interface.
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Affiliation(s)
- Elisabeth Amann
- Experimental Trauma Surgery Klinikum rechts der Isar Technical University of Munich Munich 81675 Germany
| | - Amisel Amirall
- Biomaterials Center University of Havana Havana 10 400 Cuba
| | - Albina R. Franco
- 3B's Research Group I3Bs‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark Barco Guimarães 4805‐017 Portugal
- ICVS/3B's—PT Government Associate Laboratory Braga Guimarães Portugal
| | - Patrina S. P. Poh
- Experimental Trauma Surgery Klinikum rechts der Isar Technical University of Munich Munich 81675 Germany
- Julius Wolff Institute Charité—Universitätsmedizin Berlin 13353 Berlin Germany
| | | | | | - Isabel B. Leonor
- 3B's Research Group I3Bs‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark Barco Guimarães 4805‐017 Portugal
- ICVS/3B's—PT Government Associate Laboratory Braga Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group I3Bs‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark Barco Guimarães 4805‐017 Portugal
- ICVS/3B's—PT Government Associate Laboratory Braga Guimarães Portugal
- The Discoveries Centre for Regenerative and Precision Medicine Headquarters at University of Minho Avepark Barco Guimarães 4805‐017 Portugal
| | - Martijn Griensven
- Experimental Trauma Surgery Klinikum rechts der Isar Technical University of Munich Munich 81675 Germany
- Department of Cell Biology‐Inspired Tissue Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Maastricht 6229 ER The Netherlands
| | - Elizabeth R. Balmayor
- Experimental Trauma Surgery Klinikum rechts der Isar Technical University of Munich Munich 81675 Germany
- Department of Instructive Biomaterials Engineering MERLN Institute for Technology‐Inspired Regenerative Medicine Maastricht University Maastricht 6229 ER The Netherlands
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14
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Wu M, Cai J, Yu Y, Hu S, Wang Y, Wu M. Therapeutic Agents for the Treatment of Temporomandibular Joint Disorders: Progress and Perspective. Front Pharmacol 2021; 11:596099. [PMID: 33584275 PMCID: PMC7878564 DOI: 10.3389/fphar.2020.596099] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/19/2020] [Indexed: 02/05/2023] Open
Abstract
Temporomandibular joint disorders (TMD) are a common health condition caused by the structural or functional disorders of masticatory muscles and the temporomandibular joint (TMJ). Abnormal mandibular movement in TMD patients may cause pain, chronic inflammation, and other discomfort, which could be relieved by a variety of drugs through various delivery systems. In this study, we summarized commonly used therapeutic agents in the management of TMD as well as novel bioactive molecules in preclinical stage and clinical trials. The emerging therapy strategies such as novel intra-TMJ delivery systems and implants based on tissue engineering are also discussed. This comprehensive review will strengthen our understanding of pharmacological approaches for TMD therapy.
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Affiliation(s)
- Mengjie Wu
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Jingyi Cai
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthodontics, West China Hospital of Stomato-logy, Sichuan University, Chengdu, China
| | - Yeke Yu
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sihui Hu
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Yingnan Wang
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Mengrui Wu
- College of Life Sciences, Zhejiang University, Zhejiang, China
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15
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Overexpression of HIF-1alpha in Bone Marrow Mesenchymal Stem Cells Promote the Repair of Mandibular Condylar Osteochondral Defect in a Rabbit Model. J Oral Maxillofac Surg 2020; 79:345.e1-345.e15. [PMID: 33171116 DOI: 10.1016/j.joms.2020.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/18/2020] [Accepted: 10/10/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE The self-repair ability of temporomandibular joint (TMJ) cartilage is limited. Hypoxia-inducible factor-1 alpha (HIF-1alpha) may induce stem cells to promote chondrogenic repair. The purpose of this study was to systematically evaluate the effect of HIF-1alpha overexpression in bone marrow mesenchymal stem cells (BMSCs) combined with collagen scaffolds on the repair of TMJ condylar osteochondral defects in a rabbit model. METHODS Osteochondral defects of 3-mm diameter × 2-mm depth were created at the right side of the mandibular condyle in 40 New Zealand white rabbits. The defect sites were treated with simple empty, collagen scaffolds (COL), BMSCs/COL, and HIF-1alpha overexpression BMSCs/COL groups. The histomorphologic features of condylar cartilage were monitored by gross examination, safranin O-fast green staining (Solarbio, Beijing, China), and immunohistochemical staining. The changes in subchondral bone were examined by microcomputed tomography. Immunofluorescence staining was used to trace the transplanted BMSCs in vivo. RESULTS At 12 weeks postimplantation, histologic staining showed that the osteochondral defects in the simple empty and COL groups were mainly filled with fibrous tissue, whereas the BMSCs/COL and HIF-1alpha overexpression BMSCs/COL groups repaired the defect with fibrocartilage. Furthermore, the cartilage was better organized in the HIF-1alpha overexpression BMSCs/COL group compared with the BMSCs/COL group. Microcomputed tomography showed that osteochondral defects can cause abnormal hyperosteogeny in subchondral bone, and the transplantation of BMSCs, especially HIF-1alpha overexpression BMSCs, may alleviate osteosclerosis. Immunofluorescence staining showed that HIF-1alpha overexpression can promote the survival of transplanted BMSCs. CONCLUSIONS The transplantation of HIF-1alpha overexpression BMSCs combined with a COL scaffold promotes cartilaginous repair of condylar cartilage and inhibits subchondral bone sclerosis in TMJ condylar osteochondral defect rabbits.
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16
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Abbadessa A, Crecente-Campo J, Alonso MJ. Engineering Anisotropic Meniscus: Zonal Functionality and Spatiotemporal Drug Delivery. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:133-154. [PMID: 32723019 DOI: 10.1089/ten.teb.2020.0096] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Human meniscus is a fibrocartilaginous structure that is crucial for an adequate performance of the human knee joint. Degeneration of the meniscus is often followed by partial or total meniscectomy, which enhances the risk of developing knee osteoarthritis. The lack of a satisfactory treatment for this condition has triggered a major interest in drug delivery (DD) and tissue engineering (TE) strategies intended to restore a bioactive and fully functional meniscal tissue. The aim of this review is to critically discuss the most relevant studies on spatiotemporal DD and TE, aiming for a multizonal meniscal reconstruction. Indeed, the development of meniscal tissue implants should involve a provision for adequate active molecules and scaffold features that take into account the anisotropic ultrastructure of human meniscus. This zonal differentiation is reflected in the meniscus biochemical composition, collagen fiber arrangement, and cell distribution. In this sense, it is expected that a proper combination of advanced DD and zonal TE strategies will play a key role in the future trends in meniscus regeneration. Impact statement Meniscus degeneration is one of the main causes of knee pain, inflammation, and reduced mobility. Currently used suturing procedures and meniscectomy are far from being ideal solutions to the loss of meniscal function. Therefore, drug delivery (DD) and tissue engineering (TE) strategies are currently under investigation. DD systems aim at an in situ controlled release of growth factors, whereas TE strategies aim at mimicking the anisotropy of native meniscus. The goal of this review is to discuss these two main approaches, as well as synergies between them that are expected to lead to a real breakthrough in the field.
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Affiliation(s)
- Anna Abbadessa
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.,Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - José Crecente-Campo
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.,Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - María José Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), IDIS Research Institute, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.,Department of Pharmacology, Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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17
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Almarza AJ, Mercuri LG, Arzi B, Gallo LM, Granquist E, Kapila S, Detamore MS. Temporomandibular Joint Bioengineering Conference: Working Together Toward Improving Clinical Outcomes. J Biomech Eng 2019; 142:2737113. [PMID: 31233104 DOI: 10.1115/1.4044090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 12/21/2022]
Abstract
The sixth temporomandibular joint (TMJ) Bioengineering Conference (TMJBC) was held on June 14-15 2018, in Redondo Beach, California, 12 years after the first TMJBC. Speakers gave 30 presentations and came from the United States, Europe, Asia, and Australia. The goal of the conference has remained to foster a continuing forum for bioengineers, scientists, and surgeons and veterinarians to advance technology related to TMJ disorders. These collective multidisciplinary interactions over the past decade have made large strides in moving the field of TMJ research forward. Over the past 12 years, in vivo approaches for tissue engineering have emerged, along with a wide variety of degeneration models, as well as with models occurring in nature. Furthermore, biomechanical tools have become more sensitive and new biologic interventions for disease are being developed. Clinical directives have evolved for specific diagnoses, along with patient-specific biological and immunological responses to TMJ replacement devices alloplastic and/or bioengineered devices. The sixth TMJBC heralded many opportunities for funding agencies to advance the field: (1) initiatives on TMJ that go beyond pain research, (2) more training grants focused on graduate students and fellows, (3) partnership funding with government agencies to translate TMJ solutions, and (4) the recruitment of a critical mass of TMJ experts to participate on grant review panels. The TMJ research community continues to grow and has become a pillar of dental and craniofacial research, and together we share the unified vision to ultimately improve diagnoses and treatment outcomes in patients affected by TMJ disorders.
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Affiliation(s)
- Alejandro J Almarza
- Departments of Oral Biology and Bioengineering, Center for Craniofacial Regeneration, McGowan Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Louis G Mercuri
- Visiting Professor Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612; TMJ Concepts, Ventura, CA 93003
| | - Boaz Arzi
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA 95616
| | - Luigi M Gallo
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Zurich CH-8031, Switzerland
| | - Eric Granquist
- Department of Oral and Maxillofacial Surgery, University of Pennsylvania, Philadelphia, PA 19104
| | - Sunil Kapila
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA 94143
| | - Michael S Detamore
- Stephenson School of Biomedical Engineering, The University of Oklahoma, Norman, OK 73019
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18
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Acri TM, Shin K, Seol D, Laird NZ, Song I, Geary SM, Chakka JL, Martin JA, Salem AK. Tissue Engineering for the Temporomandibular Joint. Adv Healthc Mater 2019; 8:e1801236. [PMID: 30556348 DOI: 10.1002/adhm.201801236] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/17/2018] [Indexed: 12/24/2022]
Abstract
Tissue engineering potentially offers new treatments for disorders of the temporomandibular joint which frequently afflict patients. Damage or disease in this area adversely affects masticatory function and speaking, reducing patients' quality of life. Effective treatment options for patients suffering from severe temporomandibular joint disorders are in high demand because surgical options are restricted to removal of damaged tissue or complete replacement of the joint with prosthetics. Tissue engineering approaches for the temporomandibular joint are a promising alternative to the limited clinical treatment options. However, tissue engineering is still a developing field and only in its formative years for the temporomandibular joint. This review outlines the anatomical and physiological characteristics of the temporomandibular joint, clinical management of temporomandibular joint disorder, and current perspectives in the tissue engineering approach for the temporomandibular joint disorder. The tissue engineering perspectives have been categorized according to the primary structures of the temporomandibular joint: the disc, the mandibular condyle, and the glenoid fossa. In each section, contemporary approaches in cellularization, growth factor selection, and scaffold fabrication strategies are reviewed in detail along with their achievements and challenges.
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Affiliation(s)
- Timothy M. Acri
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Kyungsup Shin
- Department of Orthodontics; College of Dentistry and Dental Clinics; University of Iowa; Iowa City, Iowa 52242 USA
| | - Dongrim Seol
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Noah Z. Laird
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Ino Song
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Sean M. Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - Jaidev L. Chakka
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
| | - James A. Martin
- Department of Orthopedics and Rehabilitation; Carver College of Medicine; University of Iowa; Iowa City, Iowa 52242 USA
| | - Aliasger K. Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics; College of Pharmacy; University of Iowa; Iowa City, Iowa 52242 USA
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Bonnevie ED, Mauck RL. Physiology and Engineering of the Graded Interfaces of Musculoskeletal Junctions. Annu Rev Biomed Eng 2018; 20:403-429. [PMID: 29641907 DOI: 10.1146/annurev-bioeng-062117-121113] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The connective tissues of the musculoskeletal system can be grouped into fibrous, cartilaginous, and calcified tissues. While each tissue type has a distinct composition and function, the intersections between these tissues result in the formation of complex, composite, and graded junctions. The complexity of these interfaces is a critical aspect of their healthy function, but poses a significant challenge for their repair. In this review, we describe the organization and structure of complex musculoskeletal interfaces, identify emerging technologies for engineering such structures, and outline the requirements for assessing the complex nature of these tissues in the context of recapitulating their function through tissue engineering.
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Affiliation(s)
- Edward D Bonnevie
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, and Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA; .,Translational Musculoskeletal Research Center, Col. Michael J. Crescenz Veterans Administration Medical Center, Philadelphia, Pennsylvania 19104, USA
| | - Robert L Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, and Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA; .,Translational Musculoskeletal Research Center, Col. Michael J. Crescenz Veterans Administration Medical Center, Philadelphia, Pennsylvania 19104, USA
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20
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Helgeland E, Shanbhag S, Pedersen TO, Mustafa K, Rosén A. Scaffold-Based Temporomandibular Joint Tissue Regeneration in Experimental Animal Models: A Systematic Review. TISSUE ENGINEERING PART B-REVIEWS 2018; 24:300-316. [PMID: 29400140 DOI: 10.1089/ten.teb.2017.0429] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Reconstruction of degenerated temporomandibular joint (TMJ) structures remains a clinical challenge. Tissue engineering (TE) is a promising alternative to current treatment options, where the TMJ is either left without functional components, or replaced with autogenous, allogeneic, or synthetic grafts. The objective of this systematic review was to answer the focused question: in experimental animal models, does the implantation of biomaterial scaffolds loaded with cells and/or growth factors (GFs) enhance regeneration of the discal or osteochondral TMJ tissues, compared with scaffolds alone, without cells, or GFs? Following PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analysis) guidelines, electronic databases were searched for relevant controlled preclinical in vivo studies. Thirty studies reporting TMJ TE strategies in both small (rodents, rabbits; n = 25) and large animals (dogs, sheep, goats; n = 5) reporting histological and/or radiographic outcomes were included. Twelve studies reported ectopic (subcutaneous) implantation models in rodents, whereas 18 studies reported orthotopic, surgically induced defect models in large animals. On average, studies presented with an unclear-to-high risk of bias. In most studies, mesenchymal stem cells or chondrocytes were used in combination with either natural or synthetic polymer scaffolds, aiming for either TMJ disc or condyle regeneration. In summary, the overall preclinical evidence (ectopic [n = 6] and orthotopic TMJ models [n = 6]) indicate that addition of chondrogenic and/or osteogenic cells to biomaterial scaffolds enhances the potential for TMJ tissue regeneration. Standardization of animal models and quantitative outcome evaluations (biomechanical, biochemical, histomorphometric, and radiographic) in future studies, would allow more reliable comparisons and increase the validity of the results.
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Affiliation(s)
- Espen Helgeland
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Siddharth Shanbhag
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Torbjørn Ostvik Pedersen
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway .,2 Department of Oral and Maxillofacial Surgery, University of Bergen and Haukeland University Hospital , Bergen, Norway
| | - Kamal Mustafa
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Annika Rosén
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway .,2 Department of Oral and Maxillofacial Surgery, University of Bergen and Haukeland University Hospital , Bergen, Norway
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21
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Van Bellinghen X, Idoux-Gillet Y, Pugliano M, Strub M, Bornert F, Clauss F, Schwinté P, Keller L, Benkirane-Jessel N, Kuchler-Bopp S, Lutz JC, Fioretti F. Temporomandibular Joint Regenerative Medicine. Int J Mol Sci 2018; 19:E446. [PMID: 29393880 PMCID: PMC5855668 DOI: 10.3390/ijms19020446] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/19/2018] [Accepted: 01/29/2018] [Indexed: 01/09/2023] Open
Abstract
The temporomandibular joint (TMJ) is an articulation formed between the temporal bone and the mandibular condyle which is commonly affected. These affections are often so painful during fundamental oral activities that patients have lower quality of life. Limitations of therapeutics for severe TMJ diseases have led to increased interest in regenerative strategies combining stem cells, implantable scaffolds and well-targeting bioactive molecules. To succeed in functional and structural regeneration of TMJ is very challenging. Innovative strategies and biomaterials are absolutely crucial because TMJ can be considered as one of the most difficult tissues to regenerate due to its limited healing capacity, its unique histological and structural properties and the necessity for long-term prevention of its ossified or fibrous adhesions. The ideal approach for TMJ regeneration is a unique scaffold functionalized with an osteochondral molecular gradient containing a single stem cell population able to undergo osteogenic and chondrogenic differentiation such as BMSCs, ADSCs or DPSCs. The key for this complex regeneration is the functionalization with active molecules such as IGF-1, TGF-β1 or bFGF. This regeneration can be optimized by nano/micro-assisted functionalization and by spatiotemporal drug delivery systems orchestrating the 3D formation of TMJ tissues.
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Affiliation(s)
- Xavier Van Bellinghen
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
| | - Ysia Idoux-Gillet
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
| | - Marion Pugliano
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
| | - Marion Strub
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
| | - Fabien Bornert
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
| | - Francois Clauss
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
| | - Pascale Schwinté
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
| | - Laetitia Keller
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
| | - Nadia Benkirane-Jessel
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
| | - Sabine Kuchler-Bopp
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
| | - Jean Christophe Lutz
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
- Faculté de Médecine, Université de Strasbourg, 11 rue Humann, 67000 Strasbourg, France.
| | - Florence Fioretti
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, 11 rue Humann, 67000 Strasbourg, France.
- Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Ste Elisabeth, 67000 Strasbourg, France.
- Médecine et Chirurgie Bucco-Dentaires & Chirurgie Maxillo-Facial, Hôpitaux Universitaires de Strasbourg (HUS), 1 place de l'Hôpital, 67000 Strasbourg, France.
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Gupta V, Khan Y, Berkland CJ, Laurencin CT, Detamore MS. Microsphere-Based Scaffolds in Regenerative Engineering. Annu Rev Biomed Eng 2018. [PMID: 28633566 DOI: 10.1146/annurev-bioeng-071516-044712] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microspheres have long been used in drug delivery applications because of their controlled release capabilities. They have increasingly served as the fundamental building block for fabricating scaffolds for regenerative engineering because of their ability to provide a porous network, offer high-resolution control over spatial organization, and deliver growth factors/drugs and/or nanophase materials. Because they provide physicochemical gradients via spatiotemporal release of bioactive factors and nanophase ceramics, microspheres are a desirable tool for engineering complex tissues and biological interfaces. In this review we describe various methods for microsphere fabrication and sintering, and elucidate how these methods influence both micro- and macroscopic scaffold properties, with a special focus on the nature of sintering. Furthermore, we review key applications of microsphere-based scaffolds in regenerating various tissues. We hope to inspire researchers to join a growing community of investigators using microspheres as tissue engineering scaffolds so that their full potential in regenerative engineering may be realized.
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Affiliation(s)
- Vineet Gupta
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045;
| | - Yusuf Khan
- Department of Orthopaedic Surgery, University of Connecticut Health Campus, Farmington, Connecticut 06030; , .,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269.,Institute for Regenerative Engineering, University of Connecticut Health Campus, Farmington, Connecticut 06030
| | - Cory J Berkland
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045; .,Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045;
| | - Cato T Laurencin
- Department of Orthopaedic Surgery, University of Connecticut Health Campus, Farmington, Connecticut 06030; , .,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269.,Institute for Regenerative Engineering, University of Connecticut Health Campus, Farmington, Connecticut 06030
| | - Michael S Detamore
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma 73019;
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23
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Spencer V, Illescas E, Maltes L, Kim H, Sathe V, Nukavarapu S. Osteochondral Tissue Engineering: Translational Research and Turning Research into Products. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1058:373-390. [PMID: 29691831 DOI: 10.1007/978-3-319-76711-6_17] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Osteochondral (OC) defect repair is a significant clinical challenge. Osteoarthritis results in articular cartilage/subchondral bone tissue degeneration and tissue loss, which in the long run results in cartilage/ostecochondral defect formation. OC defects are commonly approached with autografts and allografts, and both these options have found limitations. Alternatively, tissue engineered strategies with biodegradable scaffolds with and without cells and growth factors have been developed. In order to approach regeneration of complex tissues such as osteochondral, advanced tissue engineered grafts including biphasic, triphasic, and gradient configurations are considered. The graft design is motivated to promote cartilage and bone layer formation with an interdigitating transitional zone (i.e., bone-cartilage interface). Some of the engineered OC grafts with autologous cells have shown promise for OC defect repair and a few of them have advanced into clinical trials. This chapter presents synthetic osteochondral designs and the progress that has been made in terms of the clinical translation.
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Affiliation(s)
- Victoria Spencer
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Erica Illescas
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Lorenzo Maltes
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Hyun Kim
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Vinayak Sathe
- Department of Orthopaedic Surgery, University of Connecticut Health, Storrs, CT, USA
| | - Syam Nukavarapu
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Storrs, CT, USA. .,Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA.
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24
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Chang B, Ahuja N, Ma C, Liu X. Injectable scaffolds: Preparation and application in dental and craniofacial regeneration. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2017; 111:1-26. [PMID: 28649171 PMCID: PMC5478172 DOI: 10.1016/j.mser.2016.11.001] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Injectable scaffolds are appealing for tissue regeneration because they offer many advantages over pre-formed scaffolds. This article provides a comprehensive review of the injectable scaffolds currently being investigated for dental and craniofacial tissue regeneration. First, we provide an overview of injectable scaffolding materials, including natural, synthetic, and composite biomaterials. Next, we discuss a variety of characteristic parameters and gelation mechanisms of the injectable scaffolds. The advanced injectable scaffolding systems developed in recent years are then illustrated. Furthermore, we summarize the applications of the injectable scaffolds for the regeneration of dental and craniofacial tissues that include pulp, dentin, periodontal ligament, temporomandibular joint, and alveolar bone. Finally, our perspectives on the injectable scaffolds for dental and craniofacial tissue regeneration are offered as signposts for the future advancement of this field.
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Affiliation(s)
- Bei Chang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Neelam Ahuja
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Chi Ma
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Xiaohua Liu
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
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25
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Gupta V, Tenny KM, Barragan M, Berkland CJ, Detamore MS. Microsphere-based scaffolds encapsulating chondroitin sulfate or decellularized cartilage. J Biomater Appl 2016; 31:328-43. [PMID: 27358376 PMCID: PMC5179140 DOI: 10.1177/0885328216655469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Extracellular matrix materials such as decellularized cartilage (DCC) and chondroitin sulfate (CS) may be attractive chondrogenic materials for cartilage regeneration. The goal of the current study was to investigate the effects of encapsulation of DCC and CS in homogeneous microsphere-based scaffolds, and to test the hypothesis that encapsulation of these extracellular matrix materials would induce chondrogenesis of rat bone marrow stromal cells. Four different types of homogeneous scaffolds were fabricated from microspheres of poly(D,L-lactic-co-glycolic acid): Blank (poly(D,L-lactic-co-glycolic acid) only; negative control), transforming growth factor-β3 encapsulated (positive control), DCC encapsulated, and CS encapsulated. These scaffolds were then seeded with rat bone marrow stromal cells and cultured for 6 weeks. The DCC and CS encapsulation altered the morphological features of the microspheres, resulting in higher porosities in these groups. Moreover, the mechanical properties of the scaffolds were impacted due to differences in the degree of sintering, with the CS group exhibiting the highest compressive modulus. Biochemical evidence suggested a mitogenic effect of DCC and CS encapsulation on rat bone marrow stromal cells with the matrix synthesis boosted primarily by the inherently present extracellular matrix components. An important finding was that the cell seeded CS and DCC groups at week 6 had up to an order of magnitude higher glycosaminoglycan contents than their acellular counterparts. Gene expression results indicated a suppressive effect of DCC and CS encapsulation on rat bone marrow stromal cell chondrogenesis with differences in gene expression patterns existing between the DCC and CS groups. Overall, DCC and CS were easily included in microsphere-based scaffolds; however, there is a requirement to further refine their concentrations to achieve the differentiation profiles we seek in vitro.
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Affiliation(s)
- Vineet Gupta
- Bioengineering Graduate Program, University of Kansas, USA
| | - Kevin M Tenny
- Department of Chemical and Petroleum Engineering, University of Kansas, USA
| | | | - Cory J Berkland
- Department of Chemical and Petroleum Engineering, University of Kansas, USA Department of Pharmaceutical Chemistry, University of Kansas, USA
| | - Michael S Detamore
- Bioengineering Graduate Program, University of Kansas, USA Department of Chemical and Petroleum Engineering, University of Kansas, USA
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26
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Abstract
BACKGROUND Mandibular condyle cartilage (MCC) has a unique structure among articular cartilages; however, little is known about its nanoscale collagen network architecture, hampering design of regeneration therapies and rigorous evaluation of regeneration experiment outcomes in preclinical research. Helium ion microscopy is a novel technology with a long depth of field that is uniquely suited to imaging open 3D collagen networks at multiple scales without obscuring conductive coatings. OBJECTIVE The objective of this research was to image, at the micro- and nanoscales, the depth-dependent MCC collagen network architecture. DESIGN MCC was collected from New Zealand white rabbits. Images of MCC zones were acquired using helium ion, transmission electron, and light microscopy. Network fibril and canal diameters were measured. RESULTS For the first time, the MCC was visualized as a 3D collagen fibril structure at the nanoscale, the length scale of network assembly. Fibril diameters ranged from 7 to 110 nm and varied by zone. The articular surface was composed of a fine mesh that was woven through thin layers of larger fibrils. The fibrous zone was composed of approximately orthogonal lamellae of aligned fibrils. Fibrocyte processes surrounded collagen bundles forming extracellular compartments. The proliferative, mature, and hypertrophic zones were composed of a branched network that was progressively remodeled to accommodate chondrocyte hypertrophy. Osteoid fibrils were woven around osteoblast cytoplasmic processes to create numerous canals similar in size to canaliculi of mature bone. CONCLUSION This multiscale investigation advances our foundational understanding of the complex, layered 3D architecture of the MCC collagen network.
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Affiliation(s)
- Wendy S. Vanden Berg-Foels
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
- Department of Bioengineering, Clemson University, Clemson, SC, USA
- Department of Oral Health Sciences, Medical University of South Carolina, Charleston, SC, USA
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27
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Gupta V, Lyne DV, Barragan M, Berkland CJ, Detamore MS. Microsphere-based scaffolds encapsulating tricalcium phosphate and hydroxyapatite for bone regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:121. [PMID: 27272903 PMCID: PMC5299100 DOI: 10.1007/s10856-016-5734-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/28/2016] [Indexed: 06/06/2023]
Abstract
Bioceramic mixtures of tricalcium phosphate (TCP) and hydroxyapatite (HAp) are widely used for bone regeneration because of their excellent cytocompatibility, osteoconduction, and osteoinduction. Therefore, we hypothesized that incorporation of a mixture of TCP and HAp in microsphere-based scaffolds would enhance osteogenesis of rat bone marrow stromal cells (rBMSCs) compared to a positive control of scaffolds with encapsulated bone-morphogenic protein-2 (BMP-2). Poly(D,L-lactic-co-glycolic acid) (PLGA) microsphere-based scaffolds encapsulating TCP and HAp mixtures in two different ratios (7:3 and 1:1) were fabricated with the same net ceramic content (30 wt%) to evaluate how incorporation of these ceramic mixtures would affect the osteogenesis in rBMSCs. Encapsulation of TCP/HAp mixtures impacted microsphere morphologies and the compressive moduli of the scaffolds. Additionally, TCP/HAp mixtures enhanced the end-point secretion of extracellular matrix components relevant to bone tissue compared to the "blank" (PLGA-only) microsphere-based scaffolds as evidenced by the biochemical, gene expression, histology, and immunohistochemical characterization. Moreover, the TCP/HAp mixture groups even surpassed the BMP-2 positive control group in some instances in terms of matrix synthesis and gene expression. Lastly, gene expression data suggested that the rBMSCs responded differently to different TCP/HAp ratios presented to them. Altogether, it can be concluded that TCP/HAp mixtures stimulated the differentiation of rBMSCs toward an osteoblastic phenotype, and therefore may be beneficial in gradient microsphere-based scaffolds for osteochondral regeneration.
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Affiliation(s)
- Vineet Gupta
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA
| | - Dina V Lyne
- Department of Chemical and Petroleum Engineering, The University of Kansas, 4149 Learned Hall 1530 W. 15th Street, Lawrence, KS, 66045-7618, USA
| | - Marilyn Barragan
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS, USA
| | - Cory J Berkland
- Department of Chemical and Petroleum Engineering, The University of Kansas, 4149 Learned Hall 1530 W. 15th Street, Lawrence, KS, 66045-7618, USA
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, USA
| | - Michael S Detamore
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.
- Department of Chemical and Petroleum Engineering, The University of Kansas, 4149 Learned Hall 1530 W. 15th Street, Lawrence, KS, 66045-7618, USA.
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28
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Gupta V, Lyne DV, Laflin AD, Zabel TA, Barragan M, Bunch JT, Pacicca DM, Detamore MS. Microsphere-Based Osteochondral Scaffolds Carrying Opposing Gradients Of Decellularized Cartilage And Demineralized Bone Matrix. ACS Biomater Sci Eng 2016; 3:1955-1963. [PMID: 32793803 DOI: 10.1021/acsbiomaterials.6b00071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Extracellular matrix (ECM) "raw materials" such as demineralized bone matrix (DBM) and cartilage matrix have emerged as leading scaffolding materials for osteochondral regeneration owing to their capacity to facilitate progenitor/resident cell recruitment, infiltration, and differentiation without adding growth factors. Scaffolds comprising synthetic polymers are sturdy yet generally lack cues for guiding cell differentiation. We hypothesized that opposing gradients of decellularized cartilage (DCC) and DBM in polymeric microsphere-based scaffolds would provide superior regeneration compared to polymer-only scaffolds in vivo. Poly(D,L-lactic-co-glycolic acid) (PLGA) microsphere-based scaffolds were fabricated, either with opposing gradients of DCC and DBM encapsulated (GRADIENT) or without DCC and DBM (BLANK control), and implanted into rabbit osteochondral defects in medial femoral condyles. After 12 weeks, gross morphological evaluation showed that the repair tissue in about 30% of the implants was either slightly or significantly depressed, hinting toward rapid polymer degradation in scaffolds from both of the groups. Additionally, no differences were observed in gross morphology of the repair tissue between the BLANK and GRADIENT groups. Mechanical testing revealed no significant differences in model parameter values between the two groups. Histological observations demonstrated that the repair tissue in both of the groups was fibrous in nature with the cells demonstrating notable proliferation and matrix deposition activity. No adverse inflammatory response was observed in any of the implants from the two groups. Overall, the results emphasize the need to improve the technology in terms of altering the DBM and DCC concentrations, and tailoring the polymer degradation to these concentrations.
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Affiliation(s)
- Vineet Gupta
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas, United States
| | - Dina V Lyne
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, United States
| | - Amy D Laflin
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, United States
| | - Taylor A Zabel
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas, United States
| | - Marilyn Barragan
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas, United States
| | - Joshua T Bunch
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Donna M Pacicca
- Division of Orthopaedic Surgery, Children's Mercy Hospital, Kansas City, Missouri, United States.,School of Medicine, University of Missouri-Kansas City, Kansas City, Missouri, United States
| | - Michael S Detamore
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas, United States.,Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas, United States
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29
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Engineering and commercialization of human-device interfaces, from bone to brain. Biomaterials 2016; 95:35-46. [PMID: 27108404 DOI: 10.1016/j.biomaterials.2016.03.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 03/16/2016] [Accepted: 03/28/2016] [Indexed: 12/16/2022]
Abstract
Cutting edge developments in engineering of tissues, implants and devices allow for guidance and control of specific physiological structure-function relationships. Yet the engineering of functionally appropriate human-device interfaces represents an intractable challenge in the field. This leading opinion review outlines a set of current approaches as well as hurdles to design of interfaces that modulate transfer of information, i.a. forces, electrical potentials, chemical gradients and haptotactic paths, between endogenous and engineered body parts or tissues. The compendium is designed to bridge across currently separated disciplines by highlighting specific commonalities between seemingly disparate systems, e.g. musculoskeletal and nervous systems. We focus on specific examples from our own laboratories, demonstrating that the seemingly disparate musculoskeletal and nervous systems share common paradigms which can be harnessed to inspire innovative interface design solutions. Functional barrier interfaces that control molecular and biophysical traffic between tissue compartments of joints are addressed in an example of the knee. Furthermore, we describe the engineering of gradients for interfaces between endogenous and engineered tissues as well as between electrodes that physically and electrochemically couple the nervous and musculoskeletal systems. Finally, to promote translation of newly developed technologies into products, protocols, and treatments that benefit the patients who need them most, regulatory and technical challenges and opportunities are addressed on hand from an example of an implant cum delivery device that can be used to heal soft and hard tissues, from brain to bone.
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30
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Salash JR, Hossameldin RH, Almarza AJ, Chou JC, McCain JP, Mercuri LG, Wolford LM, Detamore MS. Potential Indications for Tissue Engineering in Temporomandibular Joint Surgery. J Oral Maxillofac Surg 2015; 74:705-11. [PMID: 26687154 DOI: 10.1016/j.joms.2015.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/05/2015] [Accepted: 11/10/2015] [Indexed: 12/29/2022]
Abstract
PURPOSE Musculoskeletal tissue engineering has advanced to the stage where it has the capability to engineer temporomandibular joint (TMJ) anatomic components. Unfortunately, there is a paucity of literature identifying specific indications for the use of TMJ tissue engineering solutions. The objective of this study was to establish an initial set of indications and contraindications for the use of engineered tissues for replacement of TMJ anatomic components. FINDINGS There was consensus among the authors that the management of patients requiring TMJ reconstruction as the result of 1) irreparable condylar trauma, 2) developmental or acquired TMJ pathology in skeletally immature patients, 3) hyperplasia, and 4) documented metal hypersensitivities could be indications for bioengineered condyle and ramus TMJ components. There was consensus that Wilkes stage III internal derangement might be an indication for use of a bioengineered TMJ disc or possibly even a disc-like bioengineered "fossa liner." However, there was some controversy as to whether TMJ arthritic disease (e.g., osteoarthritis) and reconstruction after failed alloplastic devices should be indications. Further research is required to determine whether tissue-engineered TMJ components could be a viable option for such cases. Contraindications for the use of bioengineered TMJ components could include patients with TMJ disorders and multiple failed surgeries, parafunctional oral habits, persistent TMJ infection, TMJ rheumatoid arthritis, and ankylosis unless the underlying pathology can be resolved. CONCLUSIONS Biomedical engineers must appreciate the specific indications that might warrant TMJ bioengineered structures, so that they avoid developing technologies in search of problems that might not exist for patients and clinicians. Instead, they should focus on identifying and understanding the problems that need resolution and then tailor technologies to address those specific situations. The aforementioned indications and contraindications are designed to serve as a guide to the next generation of tissue engineers in their strategic development of technologies to address specific clinical issues.
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Affiliation(s)
- Jean R Salash
- Graduate Student, Bioengineering Graduate Program, University of Kansas, Lawrence, KS
| | - Reem H Hossameldin
- Oral Surgeon, Department of Oral and Maxillofacial Surgery, Faculty of Oral Medicine, Cairo University, Cairo, Egypt
| | - Alejandro J Almarza
- Associate Professor, Departments of Oral Biology and Bioengineering, McGowan Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Joli C Chou
- Clinical Associate Professor, The Craniofacial Center of Western New York, Buffalo, NY
| | - Joseph P McCain
- Clinical Associate Professor and Chief, Department of Oral and Maxillofacial Surgery, Herbert Wertheim College of Medicine, Florida International University, Miami; Department of Oral and Maxillofacial Surgery, Baptist Health Systems, Miami, FL
| | - Louis G Mercuri
- Visiting Professor, Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL; TMJ Concepts, Ventura, CA
| | - Larry M Wolford
- Clinical Professor, Departments of Oral and Maxillofacial Surgery and Orthodontics, Texas A&M University Health Science Center, Baylor College of Dentistry, Baylor University Medical Center, Dallas, TX
| | - Michael S Detamore
- Professor, Department of Chemical and Petroleum Engineering and Bioengineering Graduate Program, University of Kansas, Lawrence, KS.
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Gupta V, Mohan N, Berkland CJ, Detamore MS. Microsphere-Based Scaffolds Carrying Opposing Gradients of Chondroitin Sulfate and Tricalcium Phosphate. Front Bioeng Biotechnol 2015; 3:96. [PMID: 26191526 PMCID: PMC4486839 DOI: 10.3389/fbioe.2015.00096] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 06/18/2015] [Indexed: 12/26/2022] Open
Abstract
Extracellular matrix (ECM) components, such as chondroitin sulfate (CS) and tricalcium phosphate, serve as raw materials, and thus spatial patterning of these raw materials may be leveraged to mimic the smooth transition of physical, chemical, and mechanical properties at the bone-cartilage interface. We hypothesized that encapsulation of opposing gradients of these raw materials in high molecular weight poly(d,l-lactic-co-glycolic acid) (PLGA) microsphere-based scaffolds would enhance differentiation of rat bone marrow-derived stromal cells. The raw material encapsulation altered the microstructure of the microspheres and also influenced the cellular morphology that depended on the type of material encapsulated. Moreover, the mechanical properties of the raw material encapsulating microsphere-based scaffolds initially relied on the composition of the scaffolds and later on were primarily governed by the degradation of the polymer phase and newly synthesized ECM by the seeded cells. Furthermore, raw materials had a mitogenic effect on the seeded cells and led to increased glycosaminoglycan (GAG), collagen, and calcium content. Interestingly, the initial effects of raw material encapsulation on a per-cell basis might have been overshadowed by medium-regulated environment that appeared to favor osteogenesis. However, it is to be noted that in vivo, differentiation of the cells would be governed by the surrounding native environment. Thus, the results of this study demonstrated the potential of the raw materials in facilitating neo-tissue synthesis in microsphere-based scaffolds and perhaps in combination with bioactive signals, these raw materials may be able to achieve intricate cell differentiation profiles required for regenerating the osteochondral interface.
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Affiliation(s)
- Vineet Gupta
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA
| | - Neethu Mohan
- Division of Tissue Engineering and Regeneration Technologies, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Cory J. Berkland
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, USA
| | - Michael S. Detamore
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS, USA
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Castro NJ, Patel R, Zhang LG. Design of a Novel 3D Printed Bioactive Nanocomposite Scaffold for Improved Osteochondral Regeneration. Cell Mol Bioeng 2015; 8:416-432. [PMID: 26366231 DOI: 10.1007/s12195-015-0389-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Chronic and acute osteochondral defects as a result of osteoarthritis and trauma present a common and serious clinical problem due to the tissue's inherent complexity and poor regenerative capacity. In addition, cells within the osteochondral tissue are in intimate contact with a 3D nanostructured extracellular matrix composed of numerous bioactive organic and inorganic components. As an emerging manufacturing technique, 3D printing offers great precision and control over the microarchitecture, shape and composition of tissue scaffolds. Therefore, the objective of this study is to develop a biomimetic 3D printed nanocomposite scaffold with integrated differentiation cues for improved osteochondral tissue regeneration. Through the combination of novel nano-inks composed of organic and inorganic bioactive factors and advanced 3D printing, we have successfully fabricated a series of novel constructs which closely mimic the native 3D extracellular environment with hierarchical nanoroughness, microstructure and spatiotemporal bioactive cues. Our results illustrate several key characteristics of the 3D printed nanocomposite scaffold to include improved mechanical properties as well as excellent cytocompatibility for enhanced human bone marrow-derived mesenchymal stem cell adhesion, proliferation, and osteochondral differentiation in vitro. The present work further illustrates the effectiveness of the scaffolds developed here as a promising and highly tunable platform for osteochondral tissue regeneration.
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Affiliation(s)
- Nathan J Castro
- Department of Mechanical and Aerospace Engineering, The George Washington University, 800 22 street, NW, Washington, DC, 20052
| | - Romil Patel
- Department of Biomedical Engineering, The George Washington University, 800 22 street, NW, Washington, DC, 20052
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, 800 22 street, NW, Washington, DC, 20052 ; Department of Biomedical Engineering, The George Washington University, 800 22 street, NW, Washington, DC, 20052 ; Department of Medicine, The George Washington University, 800 22 street, NW, Washington, DC, 20052
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Di Luca A, Van Blitterswijk C, Moroni L. The osteochondral interface as a gradient tissue: From development to the fabrication of gradient scaffolds for regenerative medicine. ACTA ACUST UNITED AC 2015; 105:34-52. [DOI: 10.1002/bdrc.21092] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andrea Di Luca
- Tissue Regeneration Department; University of Twente; 7522 NB Enschede The Netherlands
| | - Clemens Van Blitterswijk
- Tissue Regeneration Department; University of Twente; 7522 NB Enschede The Netherlands
- Maastricht University, MERLN Institute for Technology Inspired Regenerative Medicine; Complex Tissue Regeneration Department; Maastricht ER 6229 The Netherlands
| | - Lorenzo Moroni
- Tissue Regeneration Department; University of Twente; 7522 NB Enschede The Netherlands
- Maastricht University, MERLN Institute for Technology Inspired Regenerative Medicine; Complex Tissue Regeneration Department; Maastricht ER 6229 The Netherlands
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Abstracts of the 2014 TERMIS-AM Conference, December 13-16, 2014, Washington, DC. Tissue Eng Part A 2014; 20 Suppl 1:S1-140. [PMID: 25469446 DOI: 10.1089/ten.tea.2014.5000.abstracts] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Hashemibeni B, Esfandiari E, Sadeghi F, Heidary F, Roshankhah S, Mardani M, Goharian V. An animal model study for bone repair with encapsulated differentiated osteoblasts from adipose-derived stem cells in alginate. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2014; 17:854-9. [PMID: 25691926 PMCID: PMC4328093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 07/11/2014] [Indexed: 10/26/2022]
Abstract
OBJECTIVES Adipose derived stem cells (ADSCs) can be engineered to express bone specific markers. The aim of this study is to evaluate repairing tibia in animal model with differentiated osteoblasts from autologous ADSCs in alginate scaffold. MATERIALS AND METHODS In this study, 6 canine's ADSCs were encapsulated in alginate and differentiated into osteoblasts. Alkaline phosphatase assay (ALP) and RT-PCR method were applied to confirm the osteogenic induction. Then, encapsulated differentiated cells (group 1) and cell-free alginate (group 2) implanted in defected part of dog's tibia for 4 and 8 weeks. Regenerated tissues and compressive strength of samples were evaluated by histological and Immunohistochemical (IHC) methods and Tensometer Universal Machine. RESULTS Our results showed that ADSCs were differentiated into osteoblasts in vitro, and type I collagen and osteocalcin genes expression in differentiated osteoblasts was proved by RT-PCR. In group 2, ossification and thickness of trabecula were low compared to group 1, and in both groups woven bone was observed instead of control group's compact bone. Considering time, we found bone trabeculae regression and ossification reduction after 8 weeks compared with 4 weeks in group 2, but in group 1 bone formation was increased in 8 weeks. Presence of differentiated cells caused significantly more compressive strength in comparison with group 2 (P-value ≤0.05). CONCLUSION This research showed that engineering bone from differentiated adipose-derived stem cells, encapsulated in alginate can repair tibia defects.
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Affiliation(s)
- Batool Hashemibeni
- Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ebrahim Esfandiari
- Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farzaneh Sadeghi
- Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fariba Heidary
- Torabinegad Research Center, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shiva Roshankhah
- Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Mardani
- Department of Anatomical Sciences, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vahid Goharian
- Cancer Prevention Research Center, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
- Institute of Novin Tahlilgarane Nesfe-jahan, Isfahan, Iran
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Wang Y, Meng H, Yuan X, Peng J, Guo Q, Lu S, Wang A. Fabrication and in vitro evaluation of an articular cartilage extracellular matrix-hydroxyapatite bilayered scaffold with low permeability for interface tissue engineering. Biomed Eng Online 2014; 13:80. [PMID: 24950704 PMCID: PMC4084593 DOI: 10.1186/1475-925x-13-80] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/17/2014] [Indexed: 12/28/2022] Open
Abstract
Background Osteochondral interface regeneration is challenging for functional and integrated cartilage repair. Various layered scaffolds have been used to reconstruct the complex interface, yet the influence of the permeability of the layered structure on cartilage defect healing remains largely unknown. Methods We designed and fabricated a novel bilayered scaffold using articular cartilage extracellular matrix (ACECM) and hydroxyapatite (HAp), involving a porous, oriented upper layer and a dense, mineralised lower layer. By optimising the HAp/ACECM ratio, differing pore sizes and porosities were obtained simultaneously in the two layers. To evaluate the effects of permeability on cell behaviour, rabbit chondrocytes were seeded. Results Morphological observations demonstrated that a gradual interfacial region was formed with pore sizes varying from 128.2 ± 20.3 to 21.2 ± 3.1 μm. The permeability of the bilayered scaffold decreased with increasing compressive strain and HAp content. Mechanical tests indicated that the interface was stable to bearing compressive and shear loads. Accordingly, the optimum HAp/ACECM ratio (7 w/v%) in the layer to mimic native calcified cartilage was found. Chondrocytes could not penetrate the interface and resided only in the upper layer, where they showed high cellularity and abundant matrix deposition. Conclusions Our findings suggest that a bilayered scaffold with low permeability, rather than complete isolation, represents a promising candidate for osteochondral interface tissue engineering.
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Affiliation(s)
| | | | | | | | | | | | - Aiyuan Wang
- Institute of Orthopaedics, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China.
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Abou Neel EA, Chrzanowski W, Salih VM, Kim HW, Knowles JC. Tissue engineering in dentistry. J Dent 2014; 42:915-28. [PMID: 24880036 DOI: 10.1016/j.jdent.2014.05.008] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 05/15/2014] [Accepted: 05/17/2014] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES of this review is to inform practitioners with the most updated information on tissue engineering and its potential applications in dentistry. DATA The authors used "PUBMED" to find relevant literature written in English and published from the beginning of tissue engineering until today. A combination of keywords was used as the search terms e.g., "tissue engineering", "approaches", "strategies" "dentistry", "dental stem cells", "dentino-pulp complex", "guided tissue regeneration", "whole tooth", "TMJ", "condyle", "salivary glands", and "oral mucosa". SOURCES Abstracts and full text articles were used to identify causes of craniofacial tissue loss, different approaches for craniofacial reconstructions, how the tissue engineering emerges, different strategies of tissue engineering, biomaterials employed for this purpose, the major attempts to engineer different dental structures, finally challenges and future of tissue engineering in dentistry. STUDY SELECTION Only those articles that dealt with the tissue engineering in dentistry were selected. CONCLUSIONS There have been a recent surge in guided tissue engineering methods to manage periodontal diseases beyond the traditional approaches. However, the predictable reconstruction of the innate organisation and function of whole teeth as well as their periodontal structures remains challenging. Despite some limited progress and minor successes, there remain distinct and important challenges in the development of reproducible and clinically safe approaches for oral tissue repair and regeneration. Clearly, there is a convincing body of evidence which confirms the need for this type of treatment, and public health data worldwide indicates a more than adequate patient resource. The future of these therapies involving more biological approaches and the use of dental tissue stem cells is promising and advancing. Also there may be a significant interest of their application and wider potential to treat disorders beyond the craniofacial region. CLINICAL SIGNIFICANCE Considering the interests of the patients who could possibly be helped by applying stem cell-based therapies should be carefully assessed against current ethical concerns regarding the moral status of the early embryo.
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Affiliation(s)
- Ensanya Ali Abou Neel
- Division of Biomaterials, Operative and Aesthetic Department Biomaterials Division, King Abdulaziz University, Jeddah, Saudi Arabia; Biomaterials Department, Faculty of Dentistry, Tanta University, Tanta, Egypt; UCL Eastman Dental Institute, Biomaterials & Tissue Engineering, 256 Gray's Inn Road, London WC1X 8LD, UK.
| | - Wojciech Chrzanowski
- The University of Sydney, The Faculty of Pharmacy, NSW 2006 Sydney, Australia; Department of Nanobiomedical Science & BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Vehid M Salih
- UCL Eastman Dental Institute, Biomaterials & Tissue Engineering, 256 Gray's Inn Road, London WC1X 8LD, UK; Plymouth University Peninsula School of Medicine & Dentistry, Drake's Circus, Plymouth PL4 8AA, Devon, UK
| | - Hae-Won Kim
- Department of Nanobiomedical Science & BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook, University, Cheonan 330-714, Republic of Korea
| | - Jonathan C Knowles
- UCL Eastman Dental Institute, Biomaterials & Tissue Engineering, 256 Gray's Inn Road, London WC1X 8LD, UK; Department of Nanobiomedical Science & BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
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Effects of transforming growth factor beta 1 on the plasminogen activation system, collagen and integrin synthesis, and proliferation of rabbit mandibular condylar chondrocytes. Int J Oral Maxillofac Surg 2014; 43:470-5. [DOI: 10.1016/j.ijom.2013.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 09/05/2013] [Accepted: 10/11/2013] [Indexed: 01/03/2023]
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Abstract
Osteochondral defects are difficult to treat because the articular cartilage and the subchondral bone have dissimilar characteristics and abilities to regenerate. Bioinspired scaffolds are designed to mimic structural and biological cues of the native osteochondral unit, supporting both cartilaginous and subchondral bone repair and the integration of the newly formed osteochondral matrix with the surrounding tissues. The aim of this review is to outline fundamental requirements and strategies for the development of biomimetic scaffolds reproducing the unique and multifaceted anatomical structure of the osteochondral unit. Recent progress in preclinical animal studies using bilayer and multilayer scaffolds, together with continuous gradient scaffolds will be discussed and placed in a translational perspective with data emerging from their clinical application to treat osteochondral defects in patients.
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Affiliation(s)
- Silvia Lopa
- 1 Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute , Milan, Italy
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Payne KF, Balasundaram I, Deb S, Di Silvio L, Fan KF. Tissue engineering technology and its possible applications in oral and maxillofacial surgery. Br J Oral Maxillofac Surg 2014; 52:7-15. [DOI: 10.1016/j.bjoms.2013.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 03/09/2013] [Indexed: 12/27/2022]
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Mohan N, Gupta V, Sridharan B, Sutherland A, Detamore MS. The potential of encapsulating "raw materials" in 3D osteochondral gradient scaffolds. Biotechnol Bioeng 2013; 111:829-41. [PMID: 24293388 DOI: 10.1002/bit.25145] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 10/16/2013] [Accepted: 11/01/2013] [Indexed: 12/12/2022]
Abstract
Scaffolds with continuous gradients in material composition and bioactive signals enable a smooth transition of properties at the interface. Components like chondroitin sulfate (CS) and bioactive glass (BG) in 3D scaffolds may serve as "raw materials" for synthesis of new extracellular matrix (ECM), and may have the potential to completely or partially replace expensive growth factors. We hypothesized that scaffolds with gradients of ECM components would enable superior performance of engineered constructs. Raw material encapsulation altered the appearance, structure, porosity, and degradation of the scaffolds. They allowed the scaffolds to better retain their 3D structure during culture and provided a buffering effect to the cells in culture. Following seeding of rat mesenchymal stem cells, there were several instances where glycosaminoglycan (GAG), collagen, or calcium contents were higher with the scaffolds containing raw materials (CS or BG) than with those containing transforming growth factor (TGF)-β3 or bone morphogenetic protein (BMP)-2. It was also noteworthy that a combination of both CS and TGF-β3 increased the secretion of collagen type II. Moreover, cells seeded in scaffolds containing opposing gradients of CS/TGF-β3 and BG/BMP-2 produced clear regional variations in the secretion of tissue-specific ECM. The study demonstrated raw materials have the potential to create a favorable microenvironment for cells; they can significantly enhance the synthesis of certain extracellular matrix (ECM) components when compared to expensive growth factors; either alone or in combination with growth factors they can enhance the secretion of tissue specific matrix proteins. Raw materials are promising candidates that can be used to either replace or be used in combination with growth factors. Success with raw materials in lieu of growth factors could have profound implications in terms of lower cost and faster regulatory approval for more rapid translation of regenerative medicine products to the clinic.
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Affiliation(s)
- Neethu Mohan
- Division of Tissue Engineering and Regeneration Technologies, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
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Dormer NH, Gupta V, Scurto AM, Berkland CJ, Detamore MS. Effect of different sintering methods on bioactivity and release of proteins from PLGA microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4343-51. [PMID: 23910352 PMCID: PMC3752427 DOI: 10.1016/j.msec.2013.06.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 05/17/2013] [Accepted: 06/19/2013] [Indexed: 11/23/2022]
Abstract
Macromolecule release from poly(d,l-lactide-co-glycolide) (PLGA) microspheres has been well-characterized, and is a popular approach for delivering bioactive signals from tissue-engineered scaffolds. However, the effect of some processing solvents, sterilization, and mineral incorporation (when used in concert) on long-term release and bioactivity has seldom been addressed. Understanding these effects is of significant importance for microsphere-based scaffolds, given that these scaffolds are becoming increasingly more popular, yet growth factor activity following sintering and/or sterilization is heretofore unknown. The current study evaluated the 6-week release of transforming growth factor (TGF)-β3 and bone morphogenetic protein (BMP)-2 from PLGA and PLGA/hydroxyapatite (HAp) microspheres following exposure to ethanol (EtOH), dense phase carbon dioxide (CO2), or ethylene oxide (EtO). EtO was chosen based on its common use in scaffold sterilization, whereas EtOH and CO2 were chosen given their importance in sintering microspheres together to create scaffolds. Release supernatants were then used in an accelerated cell stimulation study with human bone marrow stromal cells (hBMSCs) with monitoring of gene expression for major chondrogenic and osteogenic markers. Results indicated that in microspheres without HAp, EtOH exposure led to the greatest amount of delivery, while those treated with CO2 delivered the least growth factor. In contrast, formulations with HAp released almost half as much protein, regardless of EtOH or CO2 exposure. Notably, EtO exposure was not found to significantly affect the amount of protein released. Cell stimulation studies demonstrated that eluted protein samples performed similarly to positive controls in PLGA-only formulations, and ambiguously in PLGA/HAp composites. In conclusion, the use of EtOH, subcritical CO2, and EtO in microsphere-based scaffolds may have only slight adverse effects, and possibly even desirable effects in some cases, on protein availability and bioactivity.
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Affiliation(s)
| | - Vineet Gupta
- Bioengineering Program, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
| | - Aaron M. Scurto
- Bioengineering Program, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
- Chemical & Petroleum Engineering, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
| | - Cory J. Berkland
- Orbis Biosciences, 2002 W. 39 Ave., Kansas City, KS, USA 66103
- Bioengineering Program, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
- Chemical & Petroleum Engineering, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
- Pharmaceutical Chemistry, University of Kansas, 2030 Becker Dr., Lawrence, KS, USA 66047
| | - Michael S. Detamore
- Bioengineering Program, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
- Chemical & Petroleum Engineering, University of Kansas, 1530 W. 15 St., Lawrence, KS, USA 66045
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Chanchareonsook N, Junker R, Jongpaiboonkit L, Jansen JA. Tissue-engineered mandibular bone reconstruction for continuity defects: a systematic approach to the literature. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:147-62. [PMID: 23865639 DOI: 10.1089/ten.teb.2013.0131] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Despite significant surgical advances over the last decades, segmental mandibular bone repair remains a challenge. In light of this, tissue engineering might offer a next step in the evolution of mandibular reconstruction. PURPOSE The purpose of the present report was to (1) systematically review preclinical in vivo as well as clinical literature regarding bone tissue engineering for mandibular continuity defects, and (2) to analyze their effectiveness. MATERIALS AND METHODS An electronic search in the databases of the National Library of Medicine and ISI Web of Knowledge was carried out. Only publications in English were considered, and the search was broadened to animals and humans. Furthermore, the reference lists of related review articles and publications selected for inclusion in this review were systematically screened. Results of histology data and amount of bone bridging were chosen as primary outcome variables. However, for human reports, clinical radiographic evidence was accepted for defined primary outcome variable. The biomechanical properties, scaffold degradation, and clinical wound healing were selected as co-outcome variables. RESULTS The electronic search in the databases of the National Library of Medicine and ISI Web of Knowledge resulted in the identification of 6727 and 5017 titles, respectively. Thereafter, title assessment and hand search resulted in 128 abstracts, 101 full-text articles, and 29 scientific papers reporting on animal experiments as well as 11 papers presenting human data on the subject of tissue-engineered reconstruction of mandibular continuity defects that could be included in the present review. CONCLUSIONS It was concluded that (1) published preclinical in vivo as well as clinical data are limited, and (2) tissue-engineered approaches demonstrate some clinical potential as an alternative to autogenous bone grafting.
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Affiliation(s)
- Nattharee Chanchareonsook
- 1 Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore , Singapore, Singapore
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Bhamidipati M, Sridharan B, Scurto AM, Detamore MS. Subcritical CO2 sintering of microspheres of different polymeric materials to fabricate scaffolds for tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4892-9. [PMID: 24094202 DOI: 10.1016/j.msec.2013.08.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 07/07/2013] [Accepted: 08/07/2013] [Indexed: 12/12/2022]
Abstract
The aim of this study was to use CO2 at sub-critical pressures as a tool to sinter 3D, macroporous, microsphere-based scaffolds for bone and cartilage tissue engineering. Porous scaffolds composed of ~200 μm microspheres of either poly(lactic-co-glycolic acid) (PLGA) or polycaprolactone (PCL) were prepared using dense phase CO2 sintering, which were seeded with rat bone marrow mesenchymal stromal cells (rBMSCs), and exposed to either osteogenic (PLGA, PCL) or chondrogenic (PLGA) conditions for 6 weeks. Under osteogenic conditions, the PLGA constructs produced over an order of magnitude more calcium than the PCL constructs, whereas the PCL constructs had far superior mechanical and structural integrity (125 times stiffer than PLGA constructs) at week 6, along with twice the cell content of the PLGA constructs. Chondrogenic cell performance was limited in PLGA constructs, perhaps as a result of the polymer degradation rate being too high. The current study represents the first long-term culture of CO2-sintered microsphere-based scaffolds, and has established important thermodynamic differences in sintering between the selected formulations of PLGA and PCL, with the former requiring adjustment of pressure only, and the latter requiring the adjustment of both pressure and temperature. Based on more straightforward sintering conditions and more favorable cell performance, PLGA may be the material of choice for microspheres in a CO2 sintering application, although a different PLGA formulation with the encapsulation of growth factors, extracellular matrix-derived nanoparticles, and/or buffers in the microspheres may be advantageous for achieving a more superior cell performance than observed here.
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Petrovic V, Zivkovic P, Petrovic D, Stefanovic V. Craniofacial bone tissue engineering. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 114:e1-9. [PMID: 22862985 DOI: 10.1016/j.oooo.2012.02.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 01/18/2012] [Accepted: 02/29/2012] [Indexed: 12/17/2022]
Abstract
There are numerous conditions, such as trauma, cancer, congenital malformations, and progressive deforming skeletal diseases, that can compromise the function and architectonics of bones of craniofacial region. The need to develop new approaches for treatment of these disorders arises from the fact that conventional therapeutic strategies face many obstacles and limitations. The use of tissue engineering in regeneration of craniofacial bone structures is a very promising possibility and a great challenge for researchers and practitioners. Developments in stem cell biology and engineering have led to the discovery of different stem cell populations and biodegradable materials with suitable properties. This review summarizes the current achievements in tissue engineering of craniofacial bone, temporomandibular joint, and periodontal ligament.
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Affiliation(s)
- Vladimir Petrovic
- Department of Histology, Stem Cells Laboratory, University School of Medicine, Nis, Serbia
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Bhamidipati M, Scurto AM, Detamore MS. The future of carbon dioxide for polymer processing in tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:221-32. [PMID: 23289736 DOI: 10.1089/ten.teb.2012.0361] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The use of CO2 for scaffold fabrication in tissue engineering was popularized in the mid-1990 s as a tool for producing polymeric foam scaffolds, but had fallen out of favor to some extent, in part due to challenges with pore interconnectivity. Pore interconnectivity issues have since been resolved by numerous dedicated studies that have collectively outlined how to control the appropriate parameters to achieve a pore structure desirable for tissue regeneration. In addition to CO2 foaming, several groups have leveraged CO2 as a swelling agent to impregnate scaffolds with drugs and other bioactive additives, and for encapsulation of plasmids within scaffolds for gene delivery. Moreover, in contrast to CO2 foaming, which typically relies on supercritical CO2 at very high pressures, CO2 at much lower pressures has also been used to sinter polymeric microspheres together in the presence of cells to create cell-seeded scaffolds in a single step. CO2 has a number of advantages for polymer processing in tissue engineering, including its ease of use, low cost, and the opportunity to circumvent the use of organic solvents. Building on these advantages, and especially now with the tremendous precedent that has paved the way in defining operating parameters, and making the technology accessible for new groups to adapt, we invite and encourage our colleagues in the field to leverage CO2 as a new tool to enhance their own respective unique capabilities.
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Affiliation(s)
- Manjari Bhamidipati
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045-7618, USA
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Jeon JH, Bhamidipati M, Sridharan B, Scurto AM, Berkland CJ, Detamore MS. Tailoring of processing parameters for sintering microsphere-based scaffolds with dense-phase carbon dioxide. J Biomed Mater Res B Appl Biomater 2012; 101:330-7. [PMID: 23115065 DOI: 10.1002/jbm.b.32843] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 08/01/2012] [Accepted: 09/11/2012] [Indexed: 01/05/2023]
Abstract
Microsphere-based polymeric tissue-engineered scaffolds offer the advantage of shape-specific constructs with excellent spatiotemporal control and interconnected porous structures. The use of these highly versatile scaffolds requires a method to sinter the discrete microspheres together into a cohesive network, typically with the use of heat or organic solvents. We previously introduced subcritical CO(2) as a sintering method for microsphere-based scaffolds; here we further explored the effect of processing parameters. Gaseous or subcritical CO(2) was used for making the scaffolds, and various pressures, ratios of lactic acid to glycolic acid in poly(lactic acid-co-glycolic acid), and amounts of NaCl particles were explored. By changing these parameters, scaffolds with different mechanical properties and morphologies were prepared. The preferred range of applied subcritical CO(2) was 15-25 bar. Scaffolds prepared at 25 bar with lower lactic acid ratios and without NaCl particles had a higher stiffness, while the constructs made at 15 bar, lower glycolic acid content, and with salt granules had lower elastic moduli. Human umbilical cord mesenchymal stromal cells (hUCMSCs) seeded on the scaffolds demonstrated that cells penetrate the scaffolds and remain viable. Overall, the study demonstrated the dependence of the optimal CO(2) sintering parameters on the polymer and conditions, and identified desirable CO(2) processing parameters to employ in the sintering of microsphere-based scaffolds as a more benign alternative to heat-sintering or solvent-based sintering methods.
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Affiliation(s)
- Ju Hyeong Jeon
- Integrated Department of Orthopaedics and Rehabilitation, Walter Reed AMC, Washington, DC, USA
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Nooeaid P, Salih V, Beier JP, Boccaccini AR. Osteochondral tissue engineering: scaffolds, stem cells and applications. J Cell Mol Med 2012; 16:2247-70. [PMID: 22452848 PMCID: PMC3823419 DOI: 10.1111/j.1582-4934.2012.01571.x] [Citation(s) in RCA: 198] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 03/21/2012] [Indexed: 12/17/2022] Open
Abstract
Osteochondral tissue engineering has shown an increasing development to provide suitable strategies for the regeneration of damaged cartilage and underlying subchondral bone tissue. For reasons of the limitation in the capacity of articular cartilage to self-repair, it is essential to develop approaches based on suitable scaffolds made of appropriate engineered biomaterials. The combination of biodegradable polymers and bioactive ceramics in a variety of composite structures is promising in this area, whereby the fabrication methods, associated cells and signalling factors determine the success of the strategies. The objective of this review is to present and discuss approaches being proposed in osteochondral tissue engineering, which are focused on the application of various materials forming bilayered composite scaffolds, including polymers and ceramics, discussing the variety of scaffold designs and fabrication methods being developed. Additionally, cell sources and biological protein incorporation methods are discussed, addressing their interaction with scaffolds and highlighting the potential for creating a new generation of bilayered composite scaffolds that can mimic the native interfacial tissue properties, and are able to adapt to the biological environment.
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Affiliation(s)
- Patcharakamon Nooeaid
- Department of Materials Science and Engineering Institute of Biomaterials, Friedrich-Alexander-University of Erlangen-NürnbergErlangen, Germany
| | - Vehid Salih
- Eastman Dental Institute, UCLLondon, United Kingdom
| | - Justus P Beier
- Department of Plastic and Hand Surgery, University Hospital of Erlangen Friedrich-Alexander-University of Erlangen-NürnbergErlangen, Germany
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering Institute of Biomaterials, Friedrich-Alexander-University of Erlangen-NürnbergErlangen, Germany
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Egusa H, Sonoyama W, Nishimura M, Atsuta I, Akiyama K. Stem cells in dentistry--part I: stem cell sources. J Prosthodont Res 2012; 56:151-65. [PMID: 22796367 DOI: 10.1016/j.jpor.2012.06.001] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 06/14/2012] [Indexed: 12/21/2022]
Abstract
Stem cells can self-renew and produce different cell types, thus providing new strategies to regenerate missing tissues and treat diseases. In the field of dentistry, adult mesenchymal stem/stromal cells (MSCs) have been identified in several oral and maxillofacial tissues, which suggests that the oral tissues are a rich source of stem cells, and oral stem and mucosal cells are expected to provide an ideal source for genetically reprogrammed cells such as induced pluripotent stem (iPS) cells. Furthermore, oral tissues are expected to be not only a source but also a therapeutic target for stem cells, as stem cell and tissue engineering therapies in dentistry continue to attract increasing clinical interest. Part I of this review outlines various types of intra- and extra-oral tissue-derived stem cells with regard to clinical availability and applications in dentistry. Additionally, appropriate sources of stem cells for regenerative dentistry are discussed with regard to differentiation capacity, accessibility and possible immunomodulatory properties.
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Affiliation(s)
- Hiroshi Egusa
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Abstract
There remains a substantial shortfall in the treatment of severe skeletal injuries. The current gold standard of autologous bone grafting from the same patient has many undesirable side effects associated such as donor site morbidity. Tissue engineering seeks to offer a solution to this problem. The primary requirements for tissue-engineered scaffolds have already been well established, and many materials, such as polyesters, present themselves as potential candidates for bone defects; they have comparable structural features, but they often lack the required osteoconductivity to promote adequate bone regeneration. By combining these materials with biological growth factors, which promote the infiltration of cells into the scaffold as well as the differentiation into the specific cell and tissue type, it is possible to increase the formation of new bone. However due to the cost and potential complications associated with growth factors, controlling the rate of release is an important design consideration when developing new bone tissue engineering strategies. This paper will cover recent research in the area of encapsulation and release of growth factors within a variety of different polymeric scaffolds.
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