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Paul S, Schrobback K, Tran PA, Meinert C, Davern JW, Weekes A, Klein TJ. Photo-Cross-Linkable, Injectable, and Highly Adhesive GelMA-Glycol Chitosan Hydrogels for Cartilage Repair. Adv Healthc Mater 2023; 12:e2302078. [PMID: 37737465 DOI: 10.1002/adhm.202302078] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/27/2023] [Indexed: 09/23/2023]
Abstract
Hydrogels provide a promising platform for cartilage repair and regeneration. Although hydrogels have shown some efficacy, they still have shortcomings including poor mechanical properties and suboptimal integration with surrounding cartilage. Herein, hydrogels that are injectable, cytocompatible, mechanically robust, and highly adhesive to cartilage are developed. This approach uses GelMA-glycol chitosan (GelMA-GC) that is crosslinkable with visible light and photoinitiators (lithium acylphosphinate and tris (2,2'-bipyridyl) dichlororuthenium (II) hexahydrate ([RuII(bpy)3 ]2+ and sodium persulfate (Ru/SPS)). Ru/SPS-cross-linked hydrogels have higher compressive and tensile modulus, and most prominently higher adhesive strength with cartilage, which also depends on inclusion of GC. Tensile and push-out tests of the Ru/SPS-cross-linked GelMA-GC hydrogels demonstrate adhesive strength of ≈100 and 46 kPa, respectively. Hydrogel precursor solutions behave in a Newtonian manner and are injectable. After injection in focal bovine cartilage defects and in situ cross-linking, this hydrogel system remains intact and integrated with cartilage following joint manipulation ex vivo. Cells remain viable (>85%) in the hydrogel system and further show tissue regeneration potential after three weeks of in vitro culture. These preliminary results provide further motivation for future research on bioadhesive hydrogels for cartilage repair and regeneration.
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Affiliation(s)
- Sattwikesh Paul
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- Department of Surgery and Radiology, Faculty of Veterinary Medicine and Animal Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, 1706, Bangladesh
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Karsten Schrobback
- School of Biomedical Sciences, Centre for Genomics and Personalised Health, Translational Research Institute, Queensland University of Technology (QUT), 37 Kent Street, Woolloongabba, QLD, 4102, Australia
| | - Phong Anh Tran
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Christoph Meinert
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
- Chief Executive Officer of Gelomics Pty Ltd, Brisbane, Queensland, 4059, Australia
| | - Jordan William Davern
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology (QUT), Brisbane, QLD, 4059, Australia
| | - Angus Weekes
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Travis Jacob Klein
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Ave., Kelvin Grove, QLD, 4059, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
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2
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Yan W, Zhu J, Wu Y, Wang Y, Du C, Cheng J, Hu X, Ao Y. Meniscal Fibrocartilage Repair Based on Developmental Characteristics: A Proof-of-Concept Study. Am J Sports Med 2023; 51:3509-3522. [PMID: 37743771 DOI: 10.1177/03635465231194028] [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: 09/26/2023]
Abstract
BACKGROUND Unlike the adult meniscus, the fetal meniscus possesses robust healing capacity. The dense and stiff matrix of the adult meniscus provides a biophysical barrier for cell migration, which is not present in the fetal meniscus. Inspired by developmental characteristics, modifying the matrix of the adult meniscus into a fetal-like, loose and soft microenvironment holds opportunity to facilitate repair, especially in the avascular zone. HYPOTHESIS Modifying the dense and stiff matrix of the adult meniscus into a fetal-like, loose and soft microenvironment could enhance cell migration to the tear interface and subsequent robust healing capacity. STUDY DESIGN Controlled laboratory study. METHODS Fresh porcine menisci were treated with hyaluronidase or collagenase. The density and arrangement of collagen fibers were assessed. The degradation of proteoglycans and collagen was evaluated histologically. Cell migration within the meniscus or the infiltration of exogenous cells into the meniscus was examined. Dendritic silica nanoparticles with relatively large pores were used to encapsulate hyaluronidase for rapid release. Mesoporous silica nanoparticles with relatively small pores were used to encapsulate transforming growth factor-beta 3 (TGF-β3) for slow release. A total of 24 mature male rabbits were included. A longitudinal vertical tear (0.5 cm in length) was prepared in the avascular zone of the medial meniscus. The tear was repaired with suture, repaired with suture in addition to blank silica nanoparticles, or repaired with suture in addition to silica nanoparticles releasing hyaluronidase and TGF-β3. Animals were sacrificed at 12 months postoperatively. Meniscal repair was evaluated macroscopically and histologically. RESULTS The gaps between collagen bundles increased after hyaluronidase treatment, while collagenase treatment resulted in collagen disruption. Proteoglycans degraded after hyaluronidase treatment in a dose-dependent manner, but collagen integrity was maintained. Hyaluronidase treatment enhanced the migration and infiltration of cells within meniscal tissue. Last, the application of fibrin gel and the delivery system of silica nanoparticles encapsulating hyaluronidase and TGF-β3 enhanced meniscal repair responses in an orthotopic longitudinal vertical tear model. CONCLUSION The gradient release of hyaluronidase and TGF-β3 removed biophysical barriers for cell migration, creating a fetal-like, loose and soft microenvironment, and enhanced the fibrochondrogenic phenotype of reparative cells, facilitating the synthesis of matrix and tissue integration. CLINICAL RELEVANCE Modifying the adult matrix into a fetal-like, loose and soft microenvironment via the local gradient release of hyaluronidase and TGF-β3 enhanced the healing capacity of the meniscus.
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Affiliation(s)
- Wenqiang Yan
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jingxian Zhu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yue Wu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yiqun Wang
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Cancan Du
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jin Cheng
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Xiaoqing Hu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yingfang Ao
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
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3
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Muthu S, Korpershoek JV, Novais EJ, Tawy GF, Hollander AP, Martin I. Failure of cartilage regeneration: emerging hypotheses and related therapeutic strategies. Nat Rev Rheumatol 2023:10.1038/s41584-023-00979-5. [PMID: 37296196 DOI: 10.1038/s41584-023-00979-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2023] [Indexed: 06/12/2023]
Abstract
Osteoarthritis (OA) is a disabling condition that affects billions of people worldwide and places a considerable burden on patients and on society owing to its prevalence and economic cost. As cartilage injuries are generally associated with the progressive onset of OA, robustly effective approaches for cartilage regeneration are necessary. Despite extensive research, technical development and clinical experimentation, no current surgery-based, material-based, cell-based or drug-based treatment can reliably restore the structure and function of hyaline cartilage. This paucity of effective treatment is partly caused by a lack of fundamental understanding of why articular cartilage fails to spontaneously regenerate. Thus, research studies that investigate the mechanisms behind the cartilage regeneration processes and the failure of these processes are critical to instruct decisions about patient treatment or to support the development of next-generation therapies for cartilage repair and OA prevention. This Review provides a synoptic and structured analysis of the current hypotheses about failure in cartilage regeneration, and the accompanying therapeutic strategies to overcome these hurdles, including some current or potential approaches to OA therapy.
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Affiliation(s)
- Sathish Muthu
- Orthopaedic Research Group, Coimbatore, Tamil Nadu, India
- Department of Biotechnology, School of Engineering and Technology, Sharda University, New Delhi, India
- Department of Biotechnology, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India
| | - Jasmijn V Korpershoek
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, Netherlands
| | - Emanuel J Novais
- Unidade Local de Saúde do Litoral Alentejano, Orthopedic Department, Santiago do Cacém, Portugal
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gwenllian F Tawy
- Division of Cell Matrix Biology & Regenerative Medicine, University of Manchester, Manchester, UK
| | - Anthony P Hollander
- Institute of Lifecourse and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Ivan Martin
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland.
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Kornmuller A, Cooper TT, Jani A, Lajoie GA, Flynn LE. Probing the effects of matrix-derived microcarrier composition on human adipose-derived stromal cells cultured dynamically within spinner flask bioreactors. J Biomed Mater Res A 2023; 111:415-434. [PMID: 36210786 DOI: 10.1002/jbm.a.37459] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 01/20/2023]
Abstract
Recognizing the cell-instructive capacity of the extracellular matrix (ECM), this study investigated the effects of expanding human adipose-derived stromal cells (hASCs) on ECM-derived microcarriers fabricated from decellularized adipose tissue (DAT) or decellularized cartilage tissue (DCT) within spinner flask bioreactors. Protocols were established for decellularizing porcine auricular cartilage and electrospraying methods were used to generate microcarriers comprised exclusively of DAT or DCT, which were compositionally distinct, but had matching Young's moduli. Both microcarrier types supported hASC attachment and growth over 14 days within a low-shear spinner culture system, with a significantly higher cell density observed on the DCT microcarriers at 7 and 14 days. Irrespective of the ECM source, dynamic culture on the microcarriers altered the expression of genes and proteins associated with cell adhesion and ECM remodeling. Label-free mass spectrometry analysis showed upregulation of proteins associated with cartilage development and ECM in the hASCs expanded on the DCT microcarriers. Based on Luminex analysis, the hASCs expanded on the DCT microcarriers secreted significantly higher levels of IL-8 and PDGFAA, supporting that the ECM source can modulate hASC paracrine factor secretion. Finally, the hASCs expanded on the microcarriers were extracted for analysis of adipogenic and chondrogenic differentiation relative to baseline controls. The microcarrier-cultured hASCs showed enhanced intracellular lipid accumulation at 7 days post-induction of adipogenic differentiation. In the chondrogenic studies, a low level of differentiation was observed in all groups. Future studies are warranted using alternative cell sources with greater chondrogenic potential to further assess the chondro-inductive properties of the DCT microcarriers.
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Affiliation(s)
- Anna Kornmuller
- School of Biomedical Engineering, Faculty of Engineering, The University of Western Ontario, London, Canada
| | - Tyler T Cooper
- Department of Biochemistry, Don Rix Protein Identification Facility, The University of Western Ontario, London, Canada
| | - Ammi Jani
- Department of Chemical & Biochemical Engineering, Faculty of Engineering, The University of Western Ontario, London, Canada
| | - Gilles A Lajoie
- Department of Biochemistry, Don Rix Protein Identification Facility, The University of Western Ontario, London, Canada
| | - Lauren E Flynn
- School of Biomedical Engineering, Faculty of Engineering, The University of Western Ontario, London, Canada.,Department of Chemical & Biochemical Engineering, Faculty of Engineering, The University of Western Ontario, London, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Canada
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5
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O'Connell CD, Duchi S, Onofrillo C, Caballero-Aguilar LM, Trengove A, Doyle SE, Zywicki WJ, Pirogova E, Di Bella C. Within or Without You? A Perspective Comparing In Situ and Ex Situ Tissue Engineering Strategies for Articular Cartilage Repair. Adv Healthc Mater 2022; 11:e2201305. [PMID: 36541723 DOI: 10.1002/adhm.202201305] [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: 05/31/2022] [Revised: 10/21/2022] [Indexed: 11/23/2022]
Abstract
Human articular cartilage has a poor ability to self-repair, meaning small injuries often lead to osteoarthritis, a painful and debilitating condition which is a major contributor to the global burden of disease. Existing clinical strategies generally do not regenerate hyaline type cartilage, motivating research toward tissue engineering solutions. Prospective cartilage tissue engineering therapies can be placed into two broad categories: i) Ex situ strategies, where cartilage tissue constructs are engineered in the lab prior to implantation and ii) in situ strategies, where cells and/or a bioscaffold are delivered to the defect site to stimulate chondral repair directly. While commonalities exist between these two approaches, the core point of distinction-whether chondrogenesis primarily occurs "within" or "without" (outside) the body-can dictate many aspects of the treatment. This difference influences decisions around cell selection, the biomaterials formulation and the surgical implantation procedure, the processes of tissue integration and maturation, as well as, the prospects for regulatory clearance and clinical translation. Here, ex situ and in situ cartilage engineering strategies are compared: Highlighting their respective challenges, opportunities, and prospects on their translational pathways toward long term human cartilage repair.
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Affiliation(s)
- Cathal D O'Connell
- Discipline of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.,Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia
| | - Serena Duchi
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Surgery, St Vincent's Hospital, University of Melbourne, Fitzroy, Victoria, 3065, Australia
| | - Carmine Onofrillo
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Surgery, St Vincent's Hospital, University of Melbourne, Fitzroy, Victoria, 3065, Australia
| | - Lilith M Caballero-Aguilar
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria, 3122, Australia
| | - Anna Trengove
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Stephanie E Doyle
- Discipline of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.,Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia
| | - Wiktor J Zywicki
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Elena Pirogova
- Discipline of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Claudia Di Bella
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Surgery, St Vincent's Hospital, University of Melbourne, Fitzroy, Victoria, 3065, Australia.,Department of Medicine, St Vincent's Hospital Melbourne, Fitzroy, Victoria, 3065, Australia
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6
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Link JM, Hu JC, Athanasiou KA. Chondroitinase ABC Enhances Integration of Self-Assembled Articular Cartilage, but Its Dosage Needs to Be Moderated Based on Neocartilage Maturity. Cartilage 2021; 13:672S-683S. [PMID: 32441107 PMCID: PMC8804832 DOI: 10.1177/1947603520918653] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE To enhance the in vitro integration of self-assembled articular cartilage to native articular cartilage using chondroitinase ABC. DESIGN To examine the hypothesis that chondroitinase ABC (C-ABC) integration treatment (C-ABCint) would enhance integration of neocartilage of different maturity levels, this study was conducted in 2 phases. In phase I, the impact on integration of 2 treatments, TCL (TGF-β1, C-ABC, and lysyl oxidase like 2) and C-ABCint, was examined via a 2-factor, full factorial design. In phase II, construct maturity (2 levels) and C-ABCint concentration (3 levels) were the factors in a full factorial design to determine whether the effective C-ABCint dose was dependent on neocartilage maturity level. Neocartilages formed or treated per the factors above were placed into native cartilage rings, cultured for 2 weeks, and, then, integration was studied histologically and mechanically. Prior to integration, in phase II, a set of treated constructs were also assayed to provide a baseline of properties. RESULTS In phase I, C-ABCint and TCL treatments synergistically enhanced interface Young's modulus by 6.2-fold (P = 0.004) and increased interface tensile strength by 3.8-fold (P = 0.02) compared with control. In phase II, the interaction of the factors C-ABCint and construct maturity was significant (P = 0.0004), indicating that the effective C-ABCint dose to improve interface Young's modulus is dependent on construct maturity. Construct mechanical properties were preserved regardless of C-ABCint dose. CONCLUSIONS Applying C-ABCint to neocartilage is an effective integration strategy with translational potential, provided its dose is calibrated appropriately based on implant maturity, that also preserves implant biomechanical properties.
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Affiliation(s)
- Jarrett M. Link
- Department of Biomedical Engineering,
University of California, Irvine, CA, USA
| | - Jerry C. Hu
- Department of Biomedical Engineering,
University of California, Irvine, CA, USA
| | - Kyriacos A. Athanasiou
- Department of Biomedical Engineering,
University of California, Irvine, CA, USA,Kyriacos A. Athanasiou, Distinguished
Professor Henry Samueli Chair, Director, DELTAi (Driving
Engineering and Life-science Translational Advances @ Irvine), Department of
Biomedical Engineering, Henry Samueli School of Engineering, University of
California, 3418 Engineering Hall, Irvine, CA 92697, USA.
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7
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Lindberg GCJ, Cui X, Durham M, Veenendaal L, Schon BS, Hooper GJ, Lim KS, Woodfield TBF. Probing Multicellular Tissue Fusion of Cocultured Spheroids-A 3D-Bioassembly Model. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2103320. [PMID: 34632729 PMCID: PMC8596109 DOI: 10.1002/advs.202103320] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Indexed: 05/02/2023]
Abstract
While decades of research have enriched the knowledge of how to grow cells into mature tissues, little is yet known about the next phase: fusing of these engineered tissues into larger functional structures. The specific effect of multicellular interfaces on tissue fusion remains largely unexplored. Here, a facile 3D-bioassembly platform is introduced to primarily study fusion of cartilage-cartilage interfaces using spheroids formed from human mesenchymal stromal cells (hMSCs) and articular chondrocytes (hACs). 3D-bioassembly of two adjacent hMSCs spheroids displays coordinated migration and noteworthy matrix deposition while the interface between two hAC tissues lacks both cells and type-II collagen. Cocultures contribute to increased phenotypic stability in the fusion region while close initial contact between hMSCs and hACs (mixed) yields superior hyaline differentiation over more distant, indirect cocultures. This reduced ability of potent hMSCs to fuse with mature hAC tissue further underlines the major clinical challenge that is integration. Together, this data offer the first proof of an in vitro 3D-model to reliably study lateral fusion mechanisms between multicellular spheroids and mature cartilage tissues. Ultimately, this high-throughput 3D-bioassembly model provides a bridge between understanding cellular differentiation and tissue fusion and offers the potential to probe fundamental biological mechanisms that underpin organogenesis.
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Affiliation(s)
- Gabriella C. J. Lindberg
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Xiaolin Cui
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Mitchell Durham
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Laura Veenendaal
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Benjamin S. Schon
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Gary J. Hooper
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Khoon S. Lim
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
| | - Tim B. F. Woodfield
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupDepartment of Orthopaedic SurgeryUniversity of Otago Christchurch2 Riccarton AvenueChristchurch8011New Zealand
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8
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Horbert V, Xin L, Föhr P, Huber R, Burgkart RH, Kinne RW. In Vitro Cartilage Regeneration with a Three-Dimensional Polyglycolic Acid (PGA) Implant in a Bovine Cartilage Punch Model. Int J Mol Sci 2021; 22:11769. [PMID: 34769199 PMCID: PMC8583898 DOI: 10.3390/ijms222111769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 12/19/2022] Open
Abstract
Resorbable polyglycolic acid (PGA) chondrocyte grafts are clinically established for human articular cartilage defects. Long-term implant performance was addressed in a standardized in vitro model. PGA implants (+/- bovine chondrocytes) were placed inside cartilage rings punched out of bovine femoral trochleas (outer Ø 6 mm; inner defect Ø 2 mm) and cultured for 84 days (12 weeks). Cartilage/PGA hybrids were subsequently analyzed by histology (hematoxylin/eosin; safranin O), immunohistochemistry (aggrecan, collagens 1 and 2), protein assays, quantitative real-time polymerase chain reactions, and implant push-out force measurements. Cartilage/PGA hybrids remained vital with intact matrix until 12 weeks, limited loss of proteoglycans from "host" cartilage or cartilage-PGA interface, and progressively diminishing release of proteoglycans into the supernatant. By contrast, the collagen 2 content in cartilage and cartilage-PGA interface remained approximately constant during culture (with only little collagen 1). Both implants (+/- cells) displayed implant colonization and progressively increased aggrecan and collagen 2 mRNA, but significantly decreased push-out forces over time. Cell-loaded PGA showed significantly accelerated cell colonization and significantly extended deposition of aggrecan. Augmented chondrogenic differentiation in PGA and cartilage/PGA-interface for up to 84 days suggests initial cartilage regeneration. Due to the PGA resorbability, however, the model exhibits limitations in assessing the "lateral implant bonding".
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Affiliation(s)
- Victoria Horbert
- Experimental Rheumatology Unit, Orthopedic Professorship, Jena University Hospital, Waldkliniken Eisenberg GmbH, 07607 Eisenberg, Germany; (V.H.); (L.X.)
| | - Long Xin
- Experimental Rheumatology Unit, Orthopedic Professorship, Jena University Hospital, Waldkliniken Eisenberg GmbH, 07607 Eisenberg, Germany; (V.H.); (L.X.)
- Department of Orthopedics, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
| | - Peter Föhr
- Biomechanics Laboratory, Chair of Orthopedics and Sport Orthopedics, Technische Universität München, 81675 Munich, Germany; (P.F.); (R.H.B.)
| | - René Huber
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany;
| | - Rainer H. Burgkart
- Biomechanics Laboratory, Chair of Orthopedics and Sport Orthopedics, Technische Universität München, 81675 Munich, Germany; (P.F.); (R.H.B.)
| | - Raimund W. Kinne
- Experimental Rheumatology Unit, Orthopedic Professorship, Jena University Hospital, Waldkliniken Eisenberg GmbH, 07607 Eisenberg, Germany; (V.H.); (L.X.)
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9
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González Vázquez AG, Blokpoel Ferreras LA, Bennett KE, Casey SM, Brama PAJ, O'Brien FJ. Systematic Comparison of Biomaterials-Based Strategies for Osteochondral and Chondral Repair in Large Animal Models. Adv Healthc Mater 2021; 10:e2100878. [PMID: 34405587 DOI: 10.1002/adhm.202100878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/16/2021] [Indexed: 01/10/2023]
Abstract
Joint repair remains a major challenge in orthopaedics. Recent progress in biomaterial design has led to the fabrication of a plethora of promising devices. Pre-clinical testing of any joint repair strategy typically requires the use of large animal models (e.g., sheep, goat, pig or horse). Despite the key role of such models in clinical translation, there is still a lack of consensus regarding optimal experimental design, making it difficult to draw conclusions on their efficacy. In this context, the authors performed a systematic literature review and a risk of bias assessment on large animal models published between 2010 and 2020, to identify key experimental parameters that significantly affect the biomaterial therapeutic outcome and clinical translation potential (including defect localization, animal age/maturity, selection of controls, cell-free versus cell-laden). They determined that mechanically strong biomaterials perform better at the femoral condyles; while highlighted the importance of including native tissue controls to better evaluate the quality of the newly formed tissue. Finally, in cell-laded biomaterials, the pre-culture conditions played a more important role in defect repair than the cell type. In summary, here they present a systematic evaluation on how the experimental design of preclinical models influences biomaterial-based therapeutic outcomes in joint repair.
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Affiliation(s)
- Arlyng G. González Vázquez
- Tissue Engineering Research Group Department of Anatomy and Regenerative Medicine Royal College of Surgeons in Ireland (RCSI) Dublin 2 D02 YN77 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER) RCSI and TCD Dublin 2 D02 PN40 Ireland
| | - Lia A. Blokpoel Ferreras
- Tissue Engineering Research Group Department of Anatomy and Regenerative Medicine Royal College of Surgeons in Ireland (RCSI) Dublin 2 D02 YN77 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER) RCSI and TCD Dublin 2 D02 PN40 Ireland
| | | | - Sarah M. Casey
- Tissue Engineering Research Group Department of Anatomy and Regenerative Medicine Royal College of Surgeons in Ireland (RCSI) Dublin 2 D02 YN77 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER) RCSI and TCD Dublin 2 D02 PN40 Ireland
| | - Pieter AJ Brama
- School of Veterinary Medicine University College Dublin (UCD) Dublin 4 D04 V1W8 Ireland
| | - Fergal J. O'Brien
- Tissue Engineering Research Group Department of Anatomy and Regenerative Medicine Royal College of Surgeons in Ireland (RCSI) Dublin 2 D02 YN77 Ireland
- Advanced Materials Bio‐Engineering Research Centre (AMBER) RCSI and TCD Dublin 2 D02 PN40 Ireland
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin (TCD) Dublin 2 D02 PN40 Ireland
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10
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Kim YS, Mehta SM, Guo JL, Pearce HA, Smith BT, Watson E, Koons GL, Navara AM, Lam J, Grande-Allen KJ, Mikos AG. Evaluation of tissue integration of injectable, cell-laden hydrogels of cocultures of mesenchymal stem cells and articular chondrocytes with an ex vivo cartilage explant model. Biotechnol Bioeng 2021; 118:2958-2966. [PMID: 33913514 DOI: 10.1002/bit.27804] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/16/2021] [Accepted: 04/22/2021] [Indexed: 12/17/2022]
Abstract
This study investigated the chondrogenic activity of encapsulated mesenchymal stem cells (MSCs) and articular chondrocytes (ACs) and its impact on the mechanical properties of injectable poly(N-isopropylacrylamide)-based dual-network hydrogels loaded with poly( l -lysine) (PLL). To this effect, an ex vivo study model was employed to assess the behavior of the injected hydrogels-specifically, their surface stiffness and integration strength with the surrounding cartilage. The highest chondrogenic activity was observed from AC-encapsulated hydrogels, while the effect of PLL on MSC chondrogenesis was not apparent from biochemical analyses. Mechanical testing showed that there were no significant differences in either surface stiffness or integration strength among the different study groups. Altogether, the results suggest that the ex vivo model can allow further understanding of the relationship between biochemical changes within the hydrogel and their impact on the hydrogel's mechanical properties.
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Affiliation(s)
- Yu Seon Kim
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Shail M Mehta
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Jason L Guo
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Hannah A Pearce
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Brandon T Smith
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Emma Watson
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Gerry L Koons
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Adam M Navara
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Johnny Lam
- Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | | | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, Texas, USA
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11
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Zhang J, Li B, Zuo J, Gu R, Liu B, Ma C, Li J, Liu K. An Engineered Protein Adhesive with Properties of Tissue Integration and Controlled Release for Efficient Cartilage Repair. Adv Healthc Mater 2021; 10:e2100109. [PMID: 33949138 DOI: 10.1002/adhm.202100109] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/11/2021] [Indexed: 12/12/2022]
Abstract
Cartilage damage is a prevalent health concern among humans. The inertness of cartilage, the absence of self-healing properties, and the lack of appropriate repair materials that integrate into the tissue pose a significant challenge for cartilage repair. Thus, it is important to develop novel soft biomaterials with strong tissue adhesion and chondrogenic capabilities for cartilage repair. Herein, a new type of protein adhesive is reported that exhibits superior cartilage repair performance. The material is fabricated by the electrostatic combination of chondroitin sulfate (CS) and positively charged elastin-like protein, which is derived from natural components of the extracellular matrix (ECM). The adhesive showed robust adhesion properties on different tissue substrates, offering a favorable environment for cartilage tissue integration. Noncovalent bonding between CS molecules in the glue allows for its controlled release, which is required for efficient chondrogenic differentiation. When implanted into a rat model of cartilage defect, this protein adhesive exhibited beneficial healing effects, as evidenced by enhanced chondrogenesis, sufficient ECM production, and lateral integration. Therefore, this engineered protein complex is a promising candidate for translational application in the field of cartilage repair.
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Affiliation(s)
- Jinrui Zhang
- Department of Orthopedics China‐Japan Union Hospital of Jilin University Changchun 130033 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
| | - Bo Li
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
| | - Jianlin Zuo
- Department of Orthopedics China‐Japan Union Hospital of Jilin University Changchun 130033 China
| | - Rui Gu
- Department of Orthopedics China‐Japan Union Hospital of Jilin University Changchun 130033 China
| | - Bin Liu
- Department of Orthopedics China‐Japan Union Hospital of Jilin University Changchun 130033 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
| | - Chao Ma
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Jingjing Li
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
| | - Kai Liu
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
- Department of Chemistry Tsinghua University Beijing 100084 China
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12
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Strategies to Use Nanofiber Scaffolds as Enzyme-Based Biocatalysts in Tissue Engineering Applications. Catalysts 2021. [DOI: 10.3390/catal11050536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Nanofibers are considered versatile materials with remarkable potential in tissue engineering and regeneration. In addition to their extracellular matrix-mimicking properties, nanofibers can be functionalized with specific moieties (e.g., antimicrobial nanoparticles, ceramics, bioactive proteins, etc.) to improve their overall performance. A novel approach in this regard is the use of enzymes immobilized onto nanofibers to impart biocatalytic activity. These nanofibers are capable of carrying out the catalysis of various biological processes that are essential in the healing process of tissue. In this review, we emphasize the use of biocatalytic nanofibers in various tissue regeneration applications. Biocatalytic nanofibers can be used for wound edge or scar matrix digestion, which reduces the hindrance for cell migration and proliferation, hence displaying applications in fast tissue repair, e.g., spinal cord injury. These nanofibers have potential applications in bone regeneration, mediating osteogenic differentiation, biomineralization, and matrix formation through direct enzyme activity. Moreover, enzymes can be used to undertake efficient crosslinking and fabrication of nanofibers with better physicochemical properties and tissue regeneration potential.
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13
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Monaco G, El Haj AJ, Alini M, Stoddart MJ. Ex Vivo Systems to Study Chondrogenic Differentiation and Cartilage Integration. J Funct Morphol Kinesiol 2021; 6:E6. [PMID: 33466400 PMCID: PMC7838775 DOI: 10.3390/jfmk6010006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 12/21/2022] Open
Abstract
Articular cartilage injury and repair is an issue of growing importance. Although common, defects of articular cartilage present a unique clinical challenge due to its poor self-healing capacity, which is largely due to its avascular nature. There is a critical need to better study and understand cellular healing mechanisms to achieve more effective therapies for cartilage regeneration. This article aims to describe the key features of cartilage which is being modelled using tissue engineered cartilage constructs and ex vivo systems. These models have been used to investigate chondrogenic differentiation and to study the mechanisms of cartilage integration into the surrounding tissue. The review highlights the key regeneration principles of articular cartilage repair in healthy and diseased joints. Using co-culture models and novel bioreactor designs, the basis of regeneration is aligned with recent efforts for optimal therapeutic interventions.
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Affiliation(s)
- Graziana Monaco
- AO Research Institute Davos, Clavadelerstrasse 8, CH-7270 Davos Platz, Switzerland; (G.M.); (M.A.)
- School of Pharmacy & Bioengineering Research, University of Keele, Keele ST5 5BG, UK;
| | - Alicia J. El Haj
- School of Pharmacy & Bioengineering Research, University of Keele, Keele ST5 5BG, UK;
- Healthcare Technology Institute, Translational Medicine, School of Chemical Engineering, University of Birmingham, Birmingham B15 2TH, UK
| | - Mauro Alini
- AO Research Institute Davos, Clavadelerstrasse 8, CH-7270 Davos Platz, Switzerland; (G.M.); (M.A.)
| | - Martin J. Stoddart
- AO Research Institute Davos, Clavadelerstrasse 8, CH-7270 Davos Platz, Switzerland; (G.M.); (M.A.)
- School of Pharmacy & Bioengineering Research, University of Keele, Keele ST5 5BG, UK;
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14
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Grzeskowiak RM, Schumacher J, Dhar MS, Harper DP, Mulon PY, Anderson DE. Bone and Cartilage Interfaces With Orthopedic Implants: A Literature Review. Front Surg 2020; 7:601244. [PMID: 33409291 PMCID: PMC7779634 DOI: 10.3389/fsurg.2020.601244] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/25/2020] [Indexed: 12/21/2022] Open
Abstract
The interface between a surgical implant and tissue consists of a complex and dynamic environment characterized by mechanical and biological interactions between the implant and surrounding tissue. The implantation process leads to injury which needs to heal over time and the rapidity of this process as well as the property of restored tissue impact directly the strength of the interface. Bleeding is the first and most relevant step of the healing process because blood provides growth factors and cellular material necessary for tissue repair. Integration of the implants placed in poorly vascularized tissue such as articular cartilage is, therefore, more challenging than compared with the implants placed in well-vascularized tissues such as bone. Bleeding is followed by the establishment of a provisional matrix that is gradually transformed into the native tissue. The ultimate goal of implantation is to obtain a complete integration between the implant and tissue resulting in long-term stability. The stability of the implant has been defined as primary (mechanical) and secondary (biological integration) stability. Successful integration of an implant within the tissue depends on both stabilities and is vital for short- and long-term surgical outcomes. Advances in research aim to improve implant integration resulting in enhanced implant and tissue interface. Numerous methods have been employed to improve the process of modifying both stability types. This review provides a comprehensive discussion of current knowledge regarding implant-tissue interfaces within bone and cartilage as well as novel approaches to strengthen the implant-tissue interface. Furthermore, it gives an insight into the current state-of-art biomechanical testing of the stability of the implants. Current knowledge reveals that the design of the implants closely mimicking the native structure is more likely to become well integrated. The literature provides however several other techniques such as coating with a bioactive compound that will stimulate the integration and successful outcome for the patient.
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Affiliation(s)
- Remigiusz M. Grzeskowiak
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - Jim Schumacher
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - Madhu S. Dhar
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - David P. Harper
- The Center for Renewable Carbon, Institute of Agriculture, University of Tennessee, Knoxville, TN, United States
| | - Pierre-Yves Mulon
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - David E. Anderson
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
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15
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Komeili A, Luqman S, Federico S, Herzog W. Effect of cracks on the local deformations of articular cartilage. J Biomech 2020; 110:109970. [DOI: 10.1016/j.jbiomech.2020.109970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/21/2020] [Accepted: 07/21/2020] [Indexed: 01/09/2023]
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16
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Rahmani Del Bakhshayesh A, Babaie S, Tayefi Nasrabadi H, Asadi N, Akbarzadeh A, Abedelahi A. An overview of various treatment strategies, especially tissue engineering for damaged articular cartilage. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 48:1089-1104. [DOI: 10.1080/21691401.2020.1809439] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Azizeh Rahmani Del Bakhshayesh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soraya Babaie
- Department of Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Tayefi Nasrabadi
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nahideh Asadi
- Department of Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Akbarzadeh
- Department of Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Abedelahi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Vyas C, Mishbak H, Cooper G, Peach C, Pereira RF, Bartolo P. Biological perspectives and current biofabrication strategies in osteochondral tissue engineering. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s40898-020-00008-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AbstractArticular cartilage and the underlying subchondral bone are crucial in human movement and when damaged through disease or trauma impacts severely on quality of life. Cartilage has a limited regenerative capacity due to its avascular composition and current therapeutic interventions have limited efficacy. With a rapidly ageing population globally, the numbers of patients requiring therapy for osteochondral disorders is rising, leading to increasing pressures on healthcare systems. Research into novel therapies using tissue engineering has become a priority. However, rational design of biomimetic and clinically effective tissue constructs requires basic understanding of osteochondral biological composition, structure, and mechanical properties. Furthermore, consideration of material design, scaffold architecture, and biofabrication strategies, is needed to assist in the development of tissue engineering therapies enabling successful translation into the clinical arena. This review provides a starting point for any researcher investigating tissue engineering for osteochondral applications. An overview of biological properties of osteochondral tissue, current clinical practices, the role of tissue engineering and biofabrication, and key challenges associated with new treatments is provided. Developing precisely engineered tissue constructs with mechanical and phenotypic stability is the goal. Future work should focus on multi-stimulatory environments, long-term studies to determine phenotypic alterations and tissue formation, and the development of novel bioreactor systems that can more accurately resemble the in vivo environment.
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18
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Stefani RM, Barbosa S, Tan AR, Setti S, Stoker AM, Ateshian GA, Cadossi R, Vunjak-Novakovic G, Aaron RK, Cook JL, Bulinski JC, Hung CT. Pulsed electromagnetic fields promote repair of focal articular cartilage defects with engineered osteochondral constructs. Biotechnol Bioeng 2020; 117:1584-1596. [PMID: 31985051 PMCID: PMC8845061 DOI: 10.1002/bit.27287] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/14/2019] [Accepted: 01/24/2020] [Indexed: 12/13/2022]
Abstract
Articular cartilage injuries are a common source of joint pain and dysfunction. We hypothesized that pulsed electromagnetic fields (PEMFs) would improve growth and healing of tissue-engineered cartilage grafts in a direction-dependent manner. PEMF stimulation of engineered cartilage constructs was first evaluated in vitro using passaged adult canine chondrocytes embedded in an agarose hydrogel scaffold. PEMF coils oriented parallel to the articular surface induced superior repair stiffness compared to both perpendicular PEMF (p = .026) and control (p = .012). This was correlated with increased glycosaminoglycan deposition in both parallel and perpendicular PEMF orientations compared to control (p = .010 and .028, respectively). Following in vitro optimization, the potential clinical translation of PEMF was evaluated in a preliminary in vivo preclinical adult canine model. Engineered osteochondral constructs (∅ 6 mm × 6 mm thick, devitalized bone base) were cultured to maturity and implanted into focal defects created in the stifle (knee) joint. To assess expedited early repair, animals were assessed after a 3-month recovery period, with microfracture repairs serving as an additional clinical control. In vivo, PEMF led to a greater likelihood of normal chondrocyte (odds ratio [OR]: 2.5, p = .051) and proteoglycan (OR: 5.0, p = .013) histological scores in engineered constructs. Interestingly, engineered constructs outperformed microfracture in clinical scoring, regardless of PEMF treatment (p < .05). Overall, the studies provided evidence that PEMF stimulation enhanced engineered cartilage growth and repair, demonstrating a potential low-cost, low-risk, noninvasive treatment modality for expediting early cartilage repair.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Clark T. Hung
- Columbia University, New York, NY
- Clark T. Hung, 351 Engineering Terrace Building, Mail Code 8904, 1210 Amsterdam Avenue, New York, NY 10027, Tel: (212) 854-6542, Fax: (212) 854-8725,
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19
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Engineered cartilage utilizing fetal cartilage-derived progenitor cells for cartilage repair. Sci Rep 2020; 10:5722. [PMID: 32235934 PMCID: PMC7109068 DOI: 10.1038/s41598-020-62580-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 01/29/2020] [Indexed: 01/01/2023] Open
Abstract
The aim of this study was to develop a fetal cartilage-derived progenitor cell (FCPC) based cartilage gel through self-assembly for cartilage repair surgery, with clinically useful properties including adhesiveness, plasticity, and continued chondrogenic remodeling after transplantation. Characterization of the gels according to in vitro self-assembly period resulted in increased chondrogenic features over time. Adhesion strength of the cartilage gels were significantly higher compared to alginate gel, with the 2-wk group showing a near 20-fold higher strength (1.8 ± 0.15 kPa vs. 0.09 ± 0.01 kPa, p < 0.001). The in vivo remodeling process analysis of the 2 wk cultured gels showed increased cartilage repair characteristics and stiffness over time, with higher integration-failure stress compared to osteochondral autograft controls at 4 weeks (p < 0.01). In the nonhuman primate investigation, cartilage repair scores were significantly better in the gel group compared to defects alone after 24 weeks (p < 0.001). Cell distribution analysis at 24 weeks showed that human cells remained within the transplanted defects only. A self-assembled, FCPC-based cartilage gel showed chondrogenic repair potential as well as adhesive properties, beneficial for cartilage repair.
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20
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In Vitro Evaluation of the Influence of Substrate Mechanics on Matrix-Assisted Human Chondrocyte Transplantation. J Funct Biomater 2020; 11:jfb11010005. [PMID: 31963629 PMCID: PMC7151603 DOI: 10.3390/jfb11010005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/09/2020] [Accepted: 01/15/2020] [Indexed: 11/25/2022] Open
Abstract
Matrix-assisted chondrocyte transplantation (MACT) is of great interest for the treatment of patients with cartilage lesions. However, the roles of the matrix properties in modulating cartilage tissue integration during MACT recovery have not been fully understood. The objective of this study was to uncover the effects of substrate mechanics on the integration of implanted chondrocyte-laden hydrogels with native cartilage tissues. To this end, agarose hydrogels with Young’s moduli ranging from 0.49 kPa (0.5%, w/v) to 23.08 kPa (10%) were prepared and incorporated into an in vitro human cartilage explant model. The hydrogel-cartilage composites were cultivated for up to 12 weeks and harvested for evaluation via scanning electron microscopy, histology, and a push-through test. Our results demonstrated that integration strength at the hydrogel-cartilage interface in the 1.0% (0.93 kPa) and 2.5% (3.30 kPa) agarose groups significantly increased over time, whereas hydrogels with higher stiffness (>8.78 kPa) led to poor integration with articular cartilage. Extensive sprouting of extracellular matrix in the interfacial regions was only observed in the 0.5% to 2.5% agarose groups. Collectively, our findings suggest that while neocartilage development and its integration with native cartilage are modulated by substrate elasticity, an optimal Young’s modulus (3.30 kPa) possessed by agarose hydrogels is identified such that superior quality of tissue integration is achieved without compromising tissue properties of implanted constructs.
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21
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Stefani RM, Lee AJ, Tan AR, Halder SS, Hu Y, Guo XE, Stoker AM, Ateshian GA, Marra KG, Cook JL, Hung CT. Sustained low-dose dexamethasone delivery via a PLGA microsphere-embedded agarose implant for enhanced osteochondral repair. Acta Biomater 2020; 102:326-340. [PMID: 31805408 PMCID: PMC6956850 DOI: 10.1016/j.actbio.2019.11.052] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 12/16/2022]
Abstract
Articular cartilage defects are a common source of joint pain and dysfunction. We hypothesized that sustained low-dose dexamethasone (DEX) delivery via an acellular osteochondral implant would have a dual pro-anabolic and anti-catabolic effect, both supporting the functional integrity of adjacent graft and host tissue while also attenuating inflammation caused by iatrogenic injury. An acellular agarose hydrogel carrier with embedded DEX-loaded poly(lactic-co-glycolic) acid (PLGA) microspheres (DLMS) was developed to provide sustained release for at least 99 days. The DLMS implant was first evaluated in an in vitro pro-inflammatory model of cartilage degradation. The implant was chondroprotective, as indicated by maintenance of Young's modulus (EY) (p = 0.92) and GAG content (p = 1.0) in the presence of interleukin-1β insult. In a subsequent preliminary in vivo experiment, an osteochondral autograft transfer was performed using a pre-clinical canine model. DLMS implants were press-fit into the autograft donor site and compared to intra-articular DEX injection (INJ) or no DEX (CTL). Functional scores for DLMS animals returned to baseline (p = 0.39), whereas CTL and INJ remained significantly worse at 6 months (p < 0.05). DLMS knees were significantly more likely to have improved OARSI scores for proteoglycan, chondrocyte, and collagen pathology (p < 0.05). However, no significant improvements in synovial fluid cytokine content were observed. In conclusion, utilizing a targeted DLMS implant, we observed in vitro chondroprotection in the presence of IL-1-induced degradation and improved in vivo functional outcomes. These improved outcomes were correlated with superior histological scores but not necessarily a dampened inflammatory response, suggesting a primarily pro-anabolic effect. STATEMENT OF SIGNIFICANCE: Articular cartilage defects are a common source of joint pain and dysfunction. Effective treatment of these injuries may prevent the progression of osteoarthritis and reduce the need for total joint replacement. Dexamethasone, a potent glucocorticoid with concomitant anti-catabolic and pro-anabolic effects on cartilage, may serve as an adjuvant for a variety of repair strategies. Utilizing a dexamethasone-loaded osteochondral implant with controlled release characteristics, we demonstrated in vitro chondroprotection in the presence of IL-1-induced degradation and improved in vivo functional outcomes following osteochondral repair. These improved outcomes were correlated with superior histological cartilage scores and minimal-to-no comorbidity, which is a risk with high dose dexamethasone injections. Using this model of cartilage restoration, we have for the first time shown the application of targeted, low-dose dexamethasone for improved healing in a preclinical model of focal defect repair.
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Affiliation(s)
- Robert M Stefani
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - Andy J Lee
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - Andrea R Tan
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - Saiti S Halder
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - Yizhong Hu
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - X Edward Guo
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States
| | - Aaron M Stoker
- Missouri Orthopaedic Institute, University of Missouri, 1100 Virginia Avenue, Columbia 65212, MO, United States
| | - Gerard A Ateshian
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States; Department of Mechanical Engineering, Columbia University, 500 West 120th Street, 220 S.W. Mudd, New York 10027, NY, United States
| | - Kacey G Marra
- University of Pittsburgh, Biomedical Science Tower, 200 Lothrop Street, Pittsburgh 15213, PA, United States
| | - James L Cook
- Missouri Orthopaedic Institute, University of Missouri, 1100 Virginia Avenue, Columbia 65212, MO, United States
| | - Clark T Hung
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York 10027, NY United States.
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22
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Catechol-modified poly(oxazoline)s with tunable degradability facilitate cell invasion and lateral cartilage integration. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.06.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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23
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Arvayo AL, Imbrie-Moore A, Levenston ME. Rapid and durable photochemical bonding of cartilage using the porphyrin photosensitizer verteporfin. Osteoarthritis Cartilage 2019; 27:1537-1544. [PMID: 31229683 PMCID: PMC7409723 DOI: 10.1016/j.joca.2019.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the effectiveness of verteporfin as a photosensitizer to photochemically bond articular cartilage tissues and determine bond durability in vitro. DESIGN Bond strength induced by verteporfin over a range of concentrations and light exposure conditions was investigated using a disk-annulus model and a pushout test. Exposure was parameterized by varying either irradiance or irradiation time. Bond robustness in a cell-mediated degeneration environment was examined by exposing newly bonded samples to interleukin-1 alpha for the first 4 days of a 7-day culture period, followed by mechanical testing and biochemical and cellular viability assays. RESULTS Photochemical bonding using verteporfin produced high bonding shear strengths at relatively low photosensitizer concentrations. Low exposures produced by either low irradiance or short irradiation time were sufficient to produce shear strengths comparable to those previously produced with phthalocyanine photosensitizers with substantially higher light exposure. Photochemically produced bonds were resistant to cell-mediated degeneration in vitro with no evident differences in cell viability among treatments. CONCLUSIONS Verteporfin offers distinct advantages as a photosensitizer for photochemical bonding of articular cartilage due to the production of strong, durable bonds at relatively low light exposures. Further exploration may lead to clinically feasible strategies to augment cartilage repair techniques.
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Affiliation(s)
- Alberto L Arvayo
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305
| | | | - Marc E Levenston
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305,Corresponding Author: Marc E. Levenston, Building 520 Rm 225, Stanford University, Stanford, CA 94305-4038, United States, Tel: 1-650-723-9464, Fax: 1-650-725-1587,
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24
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Liebesny PH, Mroszczyk K, Zlotnick H, Hung HH, Frank E, Kurz B, Zanotto G, Frisbie D, Grodzinsky AJ. Enzyme Pretreatment plus Locally Delivered HB-IGF-1 Stimulate Integrative Cartilage Repair In Vitro. Tissue Eng Part A 2019; 25:1191-1201. [PMID: 31237484 PMCID: PMC6760182 DOI: 10.1089/ten.tea.2019.0013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/10/2019] [Indexed: 01/20/2023] Open
Abstract
IMPACT STATEMENT A critical attribute for the long-term success of cartilage defect repair is the strong integration between the repair tissue and the surrounding native tissue. Current approaches utilized by physicians fail to achieve this attribute, leading to eventual relapse of the defect. This article demonstrates the concept of a simple, clinically viable approach for enhancing tissue integration via the combination of a safe, transient enzymatic treatment with a locally delivered, retained growth factor through an in vitro hydrogel/cartilage explant model.
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Affiliation(s)
- Paul H. Liebesny
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Keri Mroszczyk
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Hannah Zlotnick
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Han-Hwa Hung
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Eliot Frank
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Bodo Kurz
- Anatomical Institute, University of Kiel, Kiel, Germany
| | - Gustavo Zanotto
- Department of Clinical Sciences, Orthopaedic Research Center, Colorado State University, Fort Collins, Colorado
| | - David Frisbie
- Department of Clinical Sciences, Orthopaedic Research Center, Colorado State University, Fort Collins, Colorado
| | - Alan J. Grodzinsky
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts
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25
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Chondrogenesis of human adipose-derived mesenchymal stromal cells on the [devitalized costal cartilage matrix/poly(vinyl alcohol)/fibrin] hybrid scaffolds. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.04.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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26
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Horbert V, Xin L, Foehr P, Brinkmann O, Bungartz M, Burgkart RH, Graeve T, Kinne RW. In Vitro Analysis of Cartilage Regeneration Using a Collagen Type I Hydrogel (CaReS) in the Bovine Cartilage Punch Model. Cartilage 2019; 10:346-363. [PMID: 29463136 PMCID: PMC6585298 DOI: 10.1177/1947603518756985] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE Limitations of matrix-assisted autologous chondrocyte implantation to regenerate functional hyaline cartilage demand a better understanding of the underlying cellular/molecular processes. Thus, the regenerative capacity of a clinically approved hydrogel collagen type I implant was tested in a standardized bovine cartilage punch model. METHODS Cartilage rings (outer diameter 6 mm; inner defect diameter 2 mm) were prepared from the bovine trochlear groove. Collagen implants (± bovine chondrocytes) were placed inside the cartilage rings and cultured up to 12 weeks. Cartilage-implant constructs were analyzed by histology (hematoxylin/eosin; safranin O), immunohistology (aggrecan, collagens 1 and 2), and for protein content, RNA expression, and implant push-out force. RESULTS Cartilage-implant constructs revealed vital morphology, preserved matrix integrity throughout culture, progressive, but slight proteoglycan loss from the "host" cartilage or its surface and decreasing proteoglycan release into the culture supernatant. In contrast, collagen 2 and 1 content of cartilage and cartilage-implant interface was approximately constant over time. Cell-free and cell-loaded implants showed (1) cell migration onto/into the implant, (2) progressive deposition of aggrecan and constant levels of collagens 1 and 2, (3) progressively increased mRNA levels for aggrecan and collagen 2, and (4) significantly augmented push-out forces over time. Cell-loaded implants displayed a significantly earlier and more long-lasting deposition of aggrecan, as well as tendentially higher push-out forces. CONCLUSION Preserved tissue integrity and progressively increasing cartilage differentiation and push-out forces for up to 12 weeks of cultivation suggest initial cartilage regeneration and lateral bonding of the implant in this in vitro model for cartilage replacement materials.
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Affiliation(s)
- Victoria Horbert
- Experimental Rheumatology Unit,
Department of Orthopedics, Jena University Hospital, Waldkrankenhaus “Rudolf Elle”,
Eisenberg, Germany
| | - Long Xin
- Experimental Rheumatology Unit,
Department of Orthopedics, Jena University Hospital, Waldkrankenhaus “Rudolf Elle”,
Eisenberg, Germany,Department of Orthopedics, Tongde
Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Peter Foehr
- Biomechanics Laboratory, Department of
Orthopedics and Sportsorthopedics, Klinikum rechts der Isar, Technische Universität
München, Munich, Germany
| | - Olaf Brinkmann
- Chair of Orthopedics, Department of
Orthopedics, Jena University Hospital, Waldkrankenhaus “Rudolf Elle”, Eisenberg,
Germany
| | - Matthias Bungartz
- Chair of Orthopedics, Department of
Orthopedics, Jena University Hospital, Waldkrankenhaus “Rudolf Elle”, Eisenberg,
Germany
| | - Rainer H. Burgkart
- Biomechanics Laboratory, Department of
Orthopedics and Sportsorthopedics, Klinikum rechts der Isar, Technische Universität
München, Munich, Germany
| | | | - Raimund W. Kinne
- Experimental Rheumatology Unit,
Department of Orthopedics, Jena University Hospital, Waldkrankenhaus “Rudolf Elle”,
Eisenberg, Germany,Raimund W. Kinne, Experimental Rheumatology
Unit, Department of Orthopedics, Jena University Hospital, Waldkrankenhaus
“Rudolf Elle”, Klosterlausnitzer Straße 81, D-07607, Eisenberg, Germany.
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27
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Yodmuang S, Guo H, Brial C, Warren RF, Torzilli PA, Chen T, Maher SA. Effect of interface mechanical discontinuities on scaffold-cartilage integration. J Orthop Res 2019; 37:845-854. [PMID: 30690798 PMCID: PMC6957060 DOI: 10.1002/jor.24238] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/21/2019] [Indexed: 02/04/2023]
Abstract
A consistent lack of lateral integration between scaffolds and adjacent articular cartilage has been exhibited in vitro and in vivo. Given the mismatch in mechanical properties between scaffolds and articular cartilage, the mechanical discontinuity that occurs at the interface has been implicated as a key factor, but remains inadequately studied. Our objective was to investigate how the mechanical environment within a mechanically loaded scaffold-cartilage construct might affect integration. We hypothesized that the magnitude of the mechanical discontinuity at the scaffold-cartilage interface would be related to decreased integration. To test this hypothesis, chondrocyte seeded scaffolds were embedded into cartilage explants, pre-cultured for 14 days, and then mechanically loaded for 28 days at either 1N or 6N of applied load. Constructs were kept either peripherally confined or unconfined throughout the duration of the experiment. Stress, strain, fluid flow, and relative displacements at the cartilage-scaffold interface and within the scaffold were quantified using biphasic, inhomogeneous finite element models (bFEMs). The bFEMs indicated compressive and shear stress discontinuities occurred at the scaffold-cartilage interface for the confined and unconfined groups. The mechanical strength of the scaffold-cartilage interface and scaffold GAG content were higher in the radially confined 1N loaded groups. Multivariate regression analyses identified the strength of the interface prior to the commencement of loading and fluid flow within the scaffold as the main factors associated with scaffold-cartilage integration. Our study suggests a minimum level of scaffold-cartilage integration is needed prior to the commencement of loading, although the exact threshold has yet to be identified. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
- Supansa Yodmuang
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
| | - Hongqiang Guo
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
| | - Caroline Brial
- Department of Biomechanics, Hospital for Special Surgery, 535 East 70th Street, New York 10021 New York
| | - Russell F. Warren
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York
| | - Peter A. Torzilli
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
| | - Tony Chen
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York
| | - Suzanne A. Maher
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery, New York, New York,,Department of Biomechanics, Hospital for Special Surgery, 535 East 70th Street, New York 10021 New York
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28
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Kim YS, Majid M, Melchiorri AJ, Mikos AG. Applications of decellularized extracellular matrix in bone and cartilage tissue engineering. Bioeng Transl Med 2019; 4:83-95. [PMID: 30680321 PMCID: PMC6336671 DOI: 10.1002/btm2.10110] [Citation(s) in RCA: 159] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 12/12/2022] Open
Abstract
Regenerative therapies for bone and cartilage injuries are currently unable to replicate the complex microenvironment of native tissue. There are many tissue engineering approaches attempting to address this issue through the use of synthetic materials. Although synthetic materials can be modified to simulate the mechanical and biochemical properties of the cell microenvironment, they do not mimic in full the multitude of interactions that take place within tissue. Decellularized extracellular matrix (dECM) has been established as a biomaterial that preserves a tissue's native environment, promotes cell proliferation, and provides cues for cell differentiation. The potential of dECM as a therapeutic agent is rising, but there are many limitations of dECM restricting its use. This review discusses the recent progress in the utilization of bone and cartilage dECM through applications as scaffolds, particles, and supplementary factors in bone and cartilage tissue engineering.
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Affiliation(s)
- Yu Seon Kim
- Dept. of BioengineeringRice UniversityHoustonTX 77005
| | - Marjan Majid
- Dept. of BioengineeringRice UniversityHoustonTX 77005
| | | | - Antonios G. Mikos
- Dept. of BioengineeringRice UniversityHoustonTX 77005
- Biomaterials LabRice UniversityHoustonTX 77005
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29
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Critchley S, Cunniffe G, O'Reilly A, Diaz-Payno P, Schipani R, McAlinden A, Withers D, Shin J, Alsberg E, Kelly DJ. Regeneration of Osteochondral Defects Using Developmentally Inspired Cartilaginous Templates. Tissue Eng Part A 2018; 25:159-171. [PMID: 30358516 DOI: 10.1089/ten.tea.2018.0046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
IMPACT STATEMENT Successfully treating osteochondral defects involves regenerating both the damaged articular cartilage and the underlying subchondral bone, in addition to the complex interface that separates these tissues. In this study, we demonstrate that a cartilage template, engineered using bone marrow-derived mesenchymal stem cells, can enhance the regeneration of such defects and promote the development of a more mechanically functional repair tissue. We also use a computational mechanobiological model to understand how joint-specific environmental factors, specifically oxygen levels and tissue strains, regulate the conversion of the engineered template into cartilage and bone in vivo.
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Affiliation(s)
- Susan Critchley
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
| | - Gráinne Cunniffe
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
| | - Adam O'Reilly
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
| | - Pedro Diaz-Payno
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
| | - Rossana Schipani
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
| | - Aidan McAlinden
- 3 Section of Veterinary Clinical Studies, School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | | | - Jungyoun Shin
- 5 Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Eben Alsberg
- 5 Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio.,6 Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, Ohio.,7 National Centre for Regenerative Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Daniel J Kelly
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland.,8 Advanced Materials and Bioengineering Research Centre, Trinity College Dublin and Royal College of Surgeons in Ireland, Dublin, Ireland.,9 Department of Anatomy, Royal College of Surgeons in Ireland, Dublin, Ireland
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30
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Kunisch E, Knauf AK, Hesse E, Freudenberg U, Werner C, Bothe F, Diederichs S, Richter W. StarPEG/heparin-hydrogel based in vivo engineering of stable bizonal cartilage with a calcified bottom layer. Biofabrication 2018; 11:015001. [PMID: 30376451 DOI: 10.1088/1758-5090/aae75a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Repaired cartilage tissue lacks the typical zonal structure of healthy native cartilage needed for appropriate function. Current grafts for treatment of full thickness cartilage defects focus primarily on a nonzonal design and this may be a reason why inferior nonzonal regeneration tissue developed in vivo. No biomaterial-based solutions have been developed so far to induce a proper zonal architecture into a non-mineralized and a calcified cartilage layer. The objective was to grow bizonal cartilage with a calcified cartilage bottom zone wherein main tissue development is occurring in vivo. We hypothesized that starPEG/heparin-hydrogel owing to the glycosaminoglycan heparin contained as a building-block would prevent mineralization of the upper cartilage zone and be beneficial in inhibiting long-term progression of calcified cartilage into bone. MSCs were pre-cultured as self-assembling non-mineralized cell discs before a chondrocyte-seeded fibrin- or starPEG/heparin-hydrogel layer was cast on top directly before ectopic implantation. Bizonal cartilage with a calcified bottom-layer developed in vivo showing stronger mineralization compared to in vitro samples, but the hydrogel strongly determined outcome. Zonal fibrin-constructs lost volume and allowed non-organized expansion of collagen type X, ALP-activity and mineralization from the bottom-layer into upper regions, whereas zonal starPEG/heparin-constructs were of stable architecture. While non-zonal MSCs-derived discs formed bone over 12 weeks, the starPEG/heparin-chondrocyte layer prevented further progression of calcified cartilage into bone tissue. Conclusively, starPEG/heparin-hydrogel-controlled and cell-type mediated spatiotemporal regulation allowed in vivo growth of bizonal cartilage with a stable calcified cartilage layer. Altogether our work is an important milestone encouraging direct in vivo growth of organized cartilage after biofabrication.
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Affiliation(s)
- Elke Kunisch
- Research Centre for Experimental Orthopaedics, Heidelberg University Hospital, Heidelberg, Germany
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31
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Sennett ML, Meloni GR, Farran AJE, Guehring H, Mauck RL, Dodge GR. Sprifermin treatment enhances cartilage integration in an in vitro repair model. J Orthop Res 2018; 36:2648-2656. [PMID: 29761549 PMCID: PMC7241943 DOI: 10.1002/jor.24048] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/27/2018] [Indexed: 02/04/2023]
Abstract
Cartilage integration remains a clinical challenge for treatment of focal articular defects. Cartilage exhibits limited healing capacity that declines with tissue maturation. Many approaches have been investigated for their ability to stimulate healing of mature cartilage or integration of repair tissue or tissue-engineered constructs with native cartilage. Growth factors present in immature tissue may enhance chondrogenesis and promote integrative repair of cartilage defects. In this study, we assessed the role of one such factor, fibroblast growth factor 18 (FGF18). Studies using FGF18 have shown a variety of positive effects on cartilage, including stimulation of chondrocyte proliferation, matrix biosynthesis, and suppression of proteinase activity. To explore the role of FGF18 on cartilage defect repair, we hypothesized that treatment with recombinant human FGF18 (sprifermin) would increase matrix synthesis in a defect model, thus improving integration strength. To test this hypothesis, 6 mm cartilage cylinders were harvested from juvenile bovine knees. A central 3 mm defect was created in each explant, and this core was removed and replaced. Resulting constructs were cultured in control or sprifermin-containing medium (weekly 24-h exposure of 100 ng/ml sprifermin) for 4 weeks. Mechanical testing, biochemical analysis, micro-CT, scanning electron microscopy, and histology were used to assess matrix production, adhesive strength, and structural properties of the cartilage-cartilage interface. Results showed greater adhesive strength, increased collagen content, and larger contact areas between core and annular cartilage in the sprifermin-treated group. These findings present a novel treatment for cartilage injuries that have potential to enhance defect healing and lateral cartilage-cartilage integration. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2648-2656, 2018.
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Affiliation(s)
- Mackenzie L. Sennett
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA,Translational Musculoskeletal Research Center, Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA
| | - Gregory R. Meloni
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA,Translational Musculoskeletal Research Center, Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA
| | - Alexandra J. E. Farran
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA
| | | | - Robert L. Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA,Translational Musculoskeletal Research Center, Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA,Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
| | - George R. Dodge
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA,Translational Musculoskeletal Research Center, Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA,Department of Otorhinolaryngology, University of Pennsylvania, Philadelphia, PA,Address for Correspondence: George R. Dodge, Ph.D., McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 36 Street and Hamilton Walk, Philadelphia, PA 19104, Phone: (215) 573-1514, Fax: (215) 573-2133,
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32
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Arvayo AL, Wong IJ, Dragoo JL, Levenston ME. Enhancing integration of articular cartilage grafts via photochemical bonding. J Orthop Res 2018; 36:2406-2415. [PMID: 29575046 DOI: 10.1002/jor.23898] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 03/09/2018] [Indexed: 02/04/2023]
Abstract
The integration of osteochondral grafts to native articular cartilage is critical as the lack of graft integration may lead to continued tissue degradation, poor load transfer and inadequate nutrient transport. Photochemical bonding promotes graft integration by activating a photosensitizer at the interface via a light source and avoids negative effects associated with other bonding techniques. We hypothesized that the bond strength depends on photosensitizer type and concentration in addition to light exposure. Photochemical bonding was evaluated using methylene blue (MB), a cationic phenothiazine photosensitizer, and two phthalocyanine photosensitizers, Al(III) phthalocyanine chloride tetrasulfonic acid (CASPc) and aluminum phthalocyanine chloride (AlPc). Exposure was altered by varying irradiation time for a fixed irradiance or by varying irradiance with a fixed irradiation time. MB was ineffective at producing bonding at the range of concentrations tested while CASPc produced a peak twofold bond strength increase over controls. AlPc produced substantial bonding at all concentrations with a peak 3.9-fold bond strength increase over controls. Parametric tests revealed that bond strength depended primarily on the total energy delivered to the bonding site rather than the rate of light delivery or light irradiance. Bond strength persisted for 1 week of in-vitro culture, which warrants further exploration for clinical applications. These studies indicate that photochemical bonding is a viable strategy for enhancing articular cartilage graft integration. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2406-2415, 2018.
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Affiliation(s)
- Alberto L Arvayo
- Department of Mechanical Engineering, Stanford University, Building 520 Rm 225, Stanford, California 94305-4038
| | - Ivan J Wong
- Department of Mechanical Engineering, Stanford University, Building 520 Rm 225, Stanford, California 94305-4038
| | - Jason L Dragoo
- Department of Orthopaedic Surgery, Stanford University, Stanford, California 94305-4038
| | - Marc E Levenston
- Department of Mechanical Engineering, Stanford University, Building 520 Rm 225, Stanford, California 94305-4038
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33
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Yousefi F, Kim M, Nahri SY, Mauck RL, Pleshko N. Near-Infrared Spectroscopy Predicts Compositional and Mechanical Properties of Hyaluronic Acid-Based Engineered Cartilage Constructs. Tissue Eng Part A 2018; 24:106-116. [PMID: 28398127 PMCID: PMC5770116 DOI: 10.1089/ten.tea.2017.0035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/03/2017] [Indexed: 11/12/2022] Open
Abstract
Hyaluronic acid (HA) has been widely used for cartilage tissue engineering applications. However, the optimal time point to harvest HA-based engineered constructs for cartilage repair is still under investigation. In this study, we investigated the ability of a nondestructive modality, near-infrared spectroscopic (NIR) analysis, to predict compositional and mechanical properties of HA-based engineered cartilage constructs. NIR spectral data were collected from control, unseeded constructs, and twice per week by fiber optic from constructs seeded with chondrocytes during their development over an 8-week period. Constructs were harvested at 2, 4, 6, and 8 weeks, collagen and sulfated glycosaminoglycan content measured using biochemical assays, and the mechanical properties of the constructs evaluated using unconfined compression tests. NIR absorbances associated with the scaffold material, water, and engineered cartilage matrix, were identified. The NIR-determined matrix absorbance plateaued after 4 weeks of culture, which was in agreement with the biochemical assay results. Similarly, the mechanical properties of the constructs also plateaued at 4 weeks. A multivariate partial least square model based on NIR spectral input was developed to predict the moduli of the constructs, which resulted in a prediction error of 10% and R value of 0.88 for predicted versus actual values of dynamic modulus. Furthermore, the maximum increase in moduli was calculated from the first derivative of the curve fit of NIR-predicted and actual moduli values over time, and both occurred at ∼2 weeks. Collectively, these data suggest that NIR spectral data analysis could be an alternative to destructive biochemical and mechanical methods for evaluation of HA-based engineered cartilage construct properties.
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Affiliation(s)
- Farzad Yousefi
- Tissue Imaging and Spectroscopy Lab, Department of Bioengineering, Temple University, Philadelphia, Pennsylvania
| | - Minwook Kim
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Syeda Yusra Nahri
- Tissue Imaging and Spectroscopy Lab, Department of Bioengineering, Temple University, Philadelphia, Pennsylvania
| | - Robert L. Mauck
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nancy Pleshko
- Tissue Imaging and Spectroscopy Lab, Department of Bioengineering, Temple University, Philadelphia, Pennsylvania
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34
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Abstract
Osteoarthritis (OA) is a degenerative joint condition characterized by painful cartilage lesions that impair joint mobility. Current treatments such as lavage, microfracture, and osteochondral implantation fail to integrate newly formed tissue with host tissues and establish a stable transition to subchondral bone. Similarly, tissue-engineered grafts that facilitate cartilage and bone regeneration are challenged by how to integrate the graft seamlessly with surrounding host cartilage and/or bone. This review centers on current approaches to promote cartilage graft integration. It begins with an overview of articular cartilage structure and function, as well as degenerative changes to this relationship attributed to aging, disease, and trauma. A discussion of the current progress in integrative cartilage repair follows, focusing on graft or scaffold design strategies targeting cartilage-cartilage and/or cartilage-bone integration. It is emphasized that integrative repair is required to ensure long-term success of the cartilage graft and preserve the integrity of the newly engineered articular cartilage. Studies involving the use of enzymes, choice of cell source, biomaterial selection, growth factor incorporation, and stratified versus gradient scaffolds are therefore highlighted. Moreover, models that accurately evaluate the ability of cartilage grafts to enhance tissue integrity and prevent ectopic calcification are also discussed. A summary and future directions section concludes the review.
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Affiliation(s)
- Margaret K Boushell
- a Biomaterials and Interface Tissue Engineering Laboratory, Department of Biomedical Engineering , Columbia University , New York , NY , USA
| | - Clark T Hung
- b Cellular Engineering Laboratory , Department of Biomedical Engineering Columbia University , New York , NY , USA
| | - Ernst B Hunziker
- c Department of Orthopaedic Surgery & Department of Clinical Research, Center of Regenerative Medicine for Skeletal Tissues , University of Bern , Bern , Switzerland
| | - Eric J Strauss
- d Department of Orthopaedic Surgery, Langone Medical Center , New York University , New York , NY , USA
| | - Helen H Lu
- a Biomaterials and Interface Tissue Engineering Laboratory, Department of Biomedical Engineering , Columbia University , New York , NY , USA
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35
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Yuan X, Wei Y, Villasante A, Ng JJD, Arkonac DE, Chao PHG, Vunjak-Novakovic G. Stem cell delivery in tissue-specific hydrogel enabled meniscal repair in an orthotopic rat model. Biomaterials 2017; 132:59-71. [PMID: 28407495 DOI: 10.1016/j.biomaterials.2017.04.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/28/2017] [Accepted: 04/03/2017] [Indexed: 01/21/2023]
Abstract
Interest in non-invasive injectable therapies has rapidly risen due to their excellent safety profile and ease of use in clinical settings. Injectable hydrogels can be derived from the extracellular matrix (ECM) of specific tissues to provide a biomimetic environment for cell delivery and enable seamless regeneration of tissue defects. We investigated the in situ delivery of human mesenchymal stem cells (hMSCs) in decellularized meniscus ECM hydrogel to a meniscal defect in a nude rat model. First, decellularized meniscus ECM hydrogel retained tissue-specific proteoglycans and collagens, and significantly upregulated expression of fibrochondrogenic markers by hMSCs versus collagen hydrogel alone in vitro. The meniscus ECM hydrogel in turn supported delivery of hMSCs for integrative repair of a full-thickness defect model in meniscal explants after in vitro culture and in vivo subcutaneous implantation. When applied to an orthotopic model of meniscal injury in nude rat, hMSCs in meniscus ECM hydrogel were retained out to eight weeks post-injection, contributing to tissue regeneration and protection from joint space narrowing, pathologic mineralization, and osteoarthritis development, as evidenced by macroscopic and microscopic image analysis. Based on these findings, we propose the use of tissue-specific meniscus ECM-derived hydrogel for the delivery of therapeutic hMSCs to treat meniscal injury.
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Affiliation(s)
- Xiaoning Yuan
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Yiyong Wei
- Department of Biomedical Engineering, Columbia University, New York, NY, USA; Department of Orthopaedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Aránzazu Villasante
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Johnathan J D Ng
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Derya E Arkonac
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Pen-Hsiu Grace Chao
- Institute of Biomedical Engineering, School of Medicine and School of Engineering, National Taiwan University, Taipei, Taiwan
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36
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Schagemann JC, Rudert N, Taylor ME, Sim S, Quenneville E, Garon M, Klinger M, Buschmann MD, Mittelstaedt H. Bilayer Implants: Electromechanical Assessment of Regenerated Articular Cartilage in a Sheep Model. Cartilage 2016; 7:346-60. [PMID: 27688843 PMCID: PMC5029563 DOI: 10.1177/1947603515623992] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To compare the regenerative capacity of 2 distinct bilayer implants for the restoration of osteochondral defects in a preliminary sheep model. METHODS Critical sized osteochondral defects were treated with a novel biomimetic poly-ε-caprolactone (PCL) implant (Treatment No. 2; n = 6) or a combination of Chondro-Gide and Orthoss (Treatment No. 1; n = 6). At 19 months postoperation, repair tissue (n = 5 each) was analyzed for histology and biochemistry. Electromechanical mappings (Arthro-BST) were performed ex vivo. RESULTS Histological scores, electromechanical quantitative parameter values, dsDNA and sGAG contents measured at the repair sites were statistically lower than those obtained from the contralateral surfaces. Electromechanical mappings and higher dsDNA and sGAG/weight levels indicated better regeneration for Treatment No. 1. However, these differences were not significant. For both treatments, Arthro-BST revealed early signs of degeneration of the cartilage surrounding the repair site. The International Cartilage Repair Society II histological scores of the repair tissue were significantly higher for Treatment No. 1 (10.3 ± 0.38 SE) compared to Treatment No. 2 (8.7 ± 0.45 SE). The parameters cell morphology and vascularization scored highest whereas tidemark formation scored the lowest. CONCLUSION There was cell infiltration and regeneration of bone and cartilage. However, repair was incomplete and fibrocartilaginous. There were no significant differences in the quality of regeneration between the treatments except in some histological scoring categories. The results from Arthro-BST measurements were comparable to traditional invasive/destructive methods of measuring quality of cartilage repair.
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Affiliation(s)
- Jan C. Schagemann
- University Medical Center Schleswig-Holstein Campus Lübeck, Clinic for Orthopedics and Trauma Surgery, Lübeck, Germany,Mayo Clinic, Orthopedic Surgery, Rochester, MN, USA,Jan C. Schagemann, University Medical Center Schleswig Holstein Campus Lübeck, Clinic for Orthopedics and Trauma Surgery, Ratzeburger Allee 160, 23538 Lübeck, Germany. Email
| | - Nicola Rudert
- University Medical Center Schleswig-Holstein Campus Lübeck, Clinic for Orthopedics and Trauma Surgery, Lübeck, Germany
| | | | - Sotcheadt Sim
- Biomedical and Chemical Engineering, Polytechnique Montreal, Montreal, Canada,Biomomentum Inc., Laval, Quebec, Canada
| | | | | | | | | | - Hagen Mittelstaedt
- University Medical Center Schleswig-Holstein Campus Lübeck, Clinic for Orthopedics and Trauma Surgery, Lübeck, Germany
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Gittens J, Haleem AM, Grenier S, Smyth NA, Hannon CP, Ross KA, Torzilli PA, Kennedy JG. Use of novel chitosan hydrogels for chemical tissue bonding of autologous chondral transplants. J Orthop Res 2016; 34:1139-46. [PMID: 26698186 DOI: 10.1002/jor.23142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 12/08/2015] [Indexed: 02/04/2023]
Abstract
The objective of this study was to evaluate the effect of chemical tissue bonding (CTB) on adhesion strength, fluid permeability, and cell viability across a cartilaginous graft-host interface in an in vitro autologous chondral transplant (ACT) model. Chitosan-based cross-linkers; Chitosan-Rose Bengal [Chi-RB (Ch-ABC)], Chitosan-Genipin [Chi-GP (Ch-ABC)], and Chitosan-Rose Bengal-Genipin [Chi-RB-GP (Ch-ABC)] were applied to bovine immature cartilage explants after pre-treatment with surface degrading enzyme, Chondroitinase-ABC (Ch-ABC). Adhesion strength, fluid permeability and cell viability were assessed via mechanical push-out shear testing, fluid transport and live/dead cell staining, respectively. All three chitosan-based cross-linkers significantly increased the adhesion strength at the graft-host interface, however, only a statistically significant decrease in fluid permeability was noted in Chi-GP (Ch-ABC) specimen compared to untreated controls. Cell viability was maintained for 7 days of culture across all three treatment groups. These results show the potential clinical relevance of novel chitosan-based hydrogels in enhancing tissue integration and reducing synovial fluid penetration after ACT procedures in diarthoidal joints such as the knee and ankle. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1139-1146, 2016.
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Affiliation(s)
- Jamila Gittens
- Laboratory for Soft Tissue Research, Hospital for Special Surgery, New York, New York
| | - Amgad M Haleem
- Department of Orthopedic Surgery, Oklahoma University Health Sciences Center, Oklahoma City, Oklahoma.,Department of Orthopedic Surgery, Cairo University School of Medicine, Cairo, Egypt
| | - Stephanie Grenier
- Laboratory for Soft Tissue Research, Hospital for Special Surgery, New York, New York
| | - Niall A Smyth
- Laboratory for Soft Tissue Research, Hospital for Special Surgery, New York, New York
| | - Charles P Hannon
- Department of Foot and Ankle Surgery, Hospital for Special Surgery, New York, New York
| | - Keir A Ross
- Department of Foot and Ankle Surgery, Hospital for Special Surgery, New York, New York
| | - Peter A Torzilli
- Laboratory for Soft Tissue Research, Hospital for Special Surgery, New York, New York
| | - John G Kennedy
- Department of Foot and Ankle Surgery, Hospital for Special Surgery, New York, New York
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Liebesny PH, Byun S, Hung HH, Pancoast JR, Mroszczyk KA, Young WT, Lee RT, Frisbie DD, Kisiday JD, Grodzinsky AJ. Growth Factor-Mediated Migration of Bone Marrow Progenitor Cells for Accelerated Scaffold Recruitment. Tissue Eng Part A 2016; 22:917-27. [PMID: 27268956 DOI: 10.1089/ten.tea.2015.0524] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Tissue engineering approaches using growth factor-functionalized acellular scaffolds to support and guide repair driven by endogenous cells are thought to require a careful balance between cell recruitment and growth factor release kinetics. The objective of this study was to identify a growth factor combination that accelerates progenitor cell migration into self-assembling peptide hydrogels in the context of cartilage defect repair. A novel 3D gel-to-gel migration assay enabled quantification of the chemotactic impact of platelet-derived growth factor-BB (PDGF-BB), heparin-binding insulin-like growth factor-1 (HB-IGF-1), and transforming growth factor-β1 (TGF-β1) on progenitor cells derived from subchondral bovine trabecular bone (bone-marrow progenitor cells, BM-PCs) encapsulated in the peptide hydrogel [KLDL]3. Only the combination of PDGF-BB and TGF-β1 stimulated significant migration of BM-PCs over a 4-day period, measured by confocal microscopy. Both PDGF-BB and TGF-β1 were slowly released from the gel, as measured using their (125)I-labeled forms, and they remained significantly present in the gel at 4 days. In the context of augmenting microfracture surgery for cartilage repair, our strategy of delivering chemotactic and proanabolic growth factors in KLD may provide the necessary local stimulus to help increase defect cellularity, providing more cells to generate repair tissue.
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Affiliation(s)
- Paul H Liebesny
- 1 Department of Biological Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | - Sangwon Byun
- 1 Department of Biological Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | - Han-Hwa Hung
- 1 Department of Biological Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | | | - Keri A Mroszczyk
- 3 Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | - Whitney T Young
- 3 Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | - Richard T Lee
- 2 Brigham and Women's Hospital , Boston, Massachusetts
| | - David D Frisbie
- 4 Colorado State University , Orthopaedic Research Center, Fort Collins, Colorado
| | - John D Kisiday
- 4 Colorado State University , Orthopaedic Research Center, Fort Collins, Colorado
| | - Alan J Grodzinsky
- 1 Department of Biological Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts.,3 Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts.,5 Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts
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Zhao X, Papadopoulos A, Ibusuki S, Bichara DA, Saris DB, Malda J, Anseth KS, Gill TJ, Randolph MA. Articular cartilage generation applying PEG-LA-DM/PEGDM copolymer hydrogels. BMC Musculoskelet Disord 2016; 17:245. [PMID: 27255078 PMCID: PMC4891826 DOI: 10.1186/s12891-016-1100-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 05/26/2016] [Indexed: 12/04/2022] Open
Abstract
Background Injuries to the human native cartilage tissue are particularly problematic because cartilage has little to no ability to heal or regenerate itself. Employing a tissue engineering strategy that combines suitable cell sources and biomimetic hydrogels could be a promising alternative to achieve cartilage regeneration. However, the weak mechanical properties may be the major drawback to use fully degradable hydrogels. Besides, most of the fully degradable hydrogels degrade too fast to permit enough extracellular matrix (ECM) production for neocartilage formation. In this study, we demonstrated the feasibility of neocartilage regeneration using swine articular chondrocytes photoencapsualted into poly (ethylene glycol) dimethacrylate (PEGDM) copolymer hydrogels composed of different degradation profiles: degradable (PEG-LA-DM) and nondegradable (PEGDM) macromers in molar ratios of 50/50, 60/40, 70/30, 80/20, and 90/10. Methods Articular chondrocytes were isolated enzymatically from juvenile Yorkshire swine cartilage. 6 × 107 cells cells were added to each milliliter of macromer/photoinitiator (I2959) solution. Nonpolymerized gel containing the cells (100 μL) was placed in cylindrical molds (4.5 mm diameter × 6.5 mm in height). The macromer/photoinitiator/chondrocyte solutions were polymerized using ultraviolet (365 nm) light at 10 mW/cm2 for 10 mins. Also, an articular cartilaginous ring model was used to examine the capacity of the engineered cartilage to integrate with native cartilage. Samples in the pilot study were collected at 6 weeks. Samples in the long-term experimental groups (60/40 and 70/30) were implanted into nude mice subcutaneously and harvested at 6, 12 and 18 weeks. Additionally, cylindrical constructs that were not implanted used as time zero controls. All of the harvested specimens were examined grossly and analyzed histologically and biochemically. Results Histologically, the neocartilage formed in the photochemically crosslinked gels resembled native articular cartilage with chondrocytes in lacunae and surrounded by new ECM. Increases in total DNA, glycosaminoglycan, and hydroxyproline were observed over the time periods studied. The neocartilage integrated with existing native cartilage. Conclusions Articular cartilage generation was achieved using swine articular chondrocytes photoencapsulated in copolymer PEGDM hydrogels, and the neocartilage tissue had the ability to integrate with existing adjacent native cartilage.
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Affiliation(s)
- Xing Zhao
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Division of Plastic Surgery, Massachusetts General Hospital, Harvard Medical School, WACC 435, 15 Parkman Street, Boston, MA, 02114, USA.,Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Anestis Papadopoulos
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shinichi Ibusuki
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - David A Bichara
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Division of Plastic Surgery, Massachusetts General Hospital, Harvard Medical School, WACC 435, 15 Parkman Street, Boston, MA, 02114, USA
| | - Daniel B Saris
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands.,MIRA Institute for Biotechnology and Technical Medicine, University Twente, Enschede, The Netherlands
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Equine Science, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
| | - Thomas J Gill
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mark A Randolph
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. .,Division of Plastic Surgery, Massachusetts General Hospital, Harvard Medical School, WACC 435, 15 Parkman Street, Boston, MA, 02114, USA.
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Theodoropoulos JS, DeCroos AJN, Petrera M, Park S, Kandel RA. Mechanical stimulation enhances integration in an in vitro model of cartilage repair. Knee Surg Sports Traumatol Arthrosc 2016; 24:2055-64. [PMID: 25173505 DOI: 10.1007/s00167-014-3250-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 08/15/2014] [Indexed: 12/18/2022]
Abstract
PURPOSE (1) To characterize the effects of mechanical stimulation on the integration of a tissue-engineered construct in terms of histology, biochemistry and biomechanical properties; (2) to identify whether cells of the implant or host tissue were critical to implant integration; and (3) to study cells believed to be involved in lateral integration of tissue-engineered cartilage to host cartilage. We hypothesized that mechanical stimulation would enhance the integration of the repair implant with host cartilage in an in vitro integration model. METHODS Articular cartilage was harvested from 6- to 9-month-old bovine metacarpal-phalangeal joints. Constructs composed of tissue-engineered cartilage implanted into host cartilage were placed in spinner bioreactors and maintained on a magnetic stir plate at either 0 (static control) or 90 (experimental) rotations per minute (RPM). The constructs from both the static and spinner bioreactors were harvested after either 2 or 4 weeks of culture and evaluated histologically, biochemically, biomechanically and for gene expression. RESULTS The extent and strength of integration between tissue-engineered cartilage and native cartilage improved significantly with both time and mechanical stimulation. Integration did not occur if the implant was not viable. The presence of stimulation led to a significant increase in collagen content in the integration zone between host and implant at 2 weeks. The gene profile of cells in the integration zone differs from host cartilage demonstrating an increase in the expression of membrane type 1 matrix metalloproteinase (MT1-MMP), aggrecan and type II collagen. CONCLUSIONS This study shows that the integration of in vitro tissue-engineered implants with host tissue improves with mechanical stimulation. The findings of this study suggests that consideration should be given to implementing early loading (mechanical stimulation) into future in vivo studies investigating the long-term viability and integration of tissue-engineered cartilage for the treatment of cartilage injuries. This could simply be done through the use of continuous passive motion (CPM) in the post-operative period or through a more complex and structured rehabilitation program with a gradual increase in forces across the joint over time.
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Affiliation(s)
- John S Theodoropoulos
- University of Toronto Orthopaedic Sports Medicine Program, Mount Sinai Hospital and Women's College Hospital, Room 476C, 600 University Ave, Toronto, ON, M5G 1X5, Canada.
| | - Amritha J N DeCroos
- Bioengineering of Skeletal Tissues Team, Division of Pathology and Laboratory Medicine, Mount Sinai Hospital, 600 University Ave, Toronto, ON, M5G 1X5, Canada
| | - Massimo Petrera
- University of Toronto Orthopaedic Sports Medicine Program, Mount Sinai Hospital and Women's College Hospital, Room 476C, 600 University Ave, Toronto, ON, M5G 1X5, Canada
| | - Sam Park
- University of Toronto Orthopaedic Sports Medicine Program, Mount Sinai Hospital and Women's College Hospital, Room 476C, 600 University Ave, Toronto, ON, M5G 1X5, Canada
| | - Rita A Kandel
- Bioengineering of Skeletal Tissues Team, Division of Pathology and Laboratory Medicine, Mount Sinai Hospital, 600 University Ave, Toronto, ON, M5G 1X5, Canada
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Fisher MB, Belkin NS, Milby AH, Henning EA, Söegaard N, Kim M, Pfeifer C, Saxena V, Dodge GR, Burdick JA, Schaer TP, Steinberg DR, Mauck RL. Effects of Mesenchymal Stem Cell and Growth Factor Delivery on Cartilage Repair in a Mini-Pig Model. Cartilage 2016; 7:174-84. [PMID: 27047640 PMCID: PMC4797244 DOI: 10.1177/1947603515623030] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE We have recently shown that mesenchymal stem cells (MSCs) embedded in a hyaluronic acid (HA) hydrogel and exposed to chondrogenic factors (transforming growth factor-β3 [TGF-β3]) produce a cartilage-like tissue in vitro. The current objective was to determine if these same factors could be combined immediately prior to implantation to induce a superior healing response in vivo relative to the hydrogel alone. DESIGN Trochlear chondral defects were created in Yucatan mini-pigs (6 months old). Treatment groups included an HA hydrogel alone and hydrogels containing allogeneic MSCs, TGF-β3, or both. Six weeks after surgery, micro-computed tomography was used to quantitatively assess defect fill and subchondral bone remodeling. The quality of cartilage repair was assessed using the ICRS-II histological scoring system and immunohistochemistry for type II collagen. RESULTS Treatment with TGF-β3 led to a marked increase in positive staining for collagen type II within defects (P < 0.05), while delivery of MSCs did not (P > 0.05). Neither condition had an impact on other histological semiquantitative scores (P > 0.05), and inclusion of MSCs led to significantly less defect fill (P < 0.05). For all measurements, no synergistic interaction was found between TGF-β3 and MSC treatment when they were delivered together (P > 0.05). CONCLUSIONS At this early healing time point, treatment with TGF-β3 promoted the formation of collagen type II within the defect, while allogeneic MSCs had little benefit. Combination of TGF-β3 and MSCs at the time of surgery did not produce a synergistic effect. An in vitro precultured construct made of these components may be required to enhance in vivo repair in this model system.
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Affiliation(s)
- Matthew B. Fisher
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA,Department of Biomedical Engineering, University of North Carolina, Chapel Hill, NC, USA,North Carolina State University, Raleigh, NC, USA
| | - Nicole S. Belkin
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Andrew H. Milby
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Elizabeth A. Henning
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Nicole Söegaard
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Minwook Kim
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Christian Pfeifer
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA,Department of Trauma Surgery, Regensburg University Medical Center, Regensburg, Germany
| | - Vishal Saxena
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - George R. Dodge
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Jason A. Burdick
- Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA,Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Thomas P. Schaer
- Comparative Orthopaedic Research Laboratory, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - David R. Steinberg
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Robert L. Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA,Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA,Robert L. Mauck, Departments of Orthopaedic Surgery and Bioengineering, Perelman School of Medicine, University of Pennsylvania, 424 Stemmler Hall, 36th Street and Hamilton Walk, Philadelphia, PA 19104, USA.
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Kwon H, Paschos NK, Hu JC, Athanasiou K. Articular cartilage tissue engineering: the role of signaling molecules. Cell Mol Life Sci 2016; 73:1173-94. [PMID: 26811234 PMCID: PMC5435375 DOI: 10.1007/s00018-015-2115-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/23/2015] [Accepted: 12/10/2015] [Indexed: 02/08/2023]
Abstract
Effective early disease modifying options for osteoarthritis remain lacking. Tissue engineering approach to generate cartilage in vitro has emerged as a promising option for articular cartilage repair and regeneration. Signaling molecules and matrix modifying agents, derived from knowledge of cartilage development and homeostasis, have been used as biochemical stimuli toward cartilage tissue engineering and have led to improvements in the functionality of engineered cartilage. Clinical translation of neocartilage faces challenges, such as phenotypic instability of the engineered cartilage, poor integration, inflammation, and catabolic factors in the arthritic environment; these can all contribute to failure of implanted neocartilage. A comprehensive understanding of signaling molecules involved in osteoarthritis pathogenesis and their actions on engineered cartilage will be crucial. Thus, while it is important to continue deriving inspiration from cartilage development and homeostasis, it has become increasingly necessary to incorporate knowledge from osteoarthritis pathogenesis into cartilage tissue engineering.
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Affiliation(s)
- Heenam Kwon
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Nikolaos K Paschos
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Jerry C Hu
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Kyriacos Athanasiou
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.
- Department of Orthopaedic Surgery, University of California Davis Medical Center, Sacramento, CA, USA.
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Nondestructive Assessment of Engineered Cartilage Composition by Near Infrared Spectroscopy. Ann Biomed Eng 2016; 44:680-92. [PMID: 26817457 DOI: 10.1007/s10439-015-1536-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022]
Abstract
Tissue engineering presents a strategy to overcome the limitations of current tissue healing methods. Scaffolds, cells, external growth factors and mechanical input are combined in an effort to obtain constructs with properties that mimic native tissues. However, engineered constructs developed using similar culture environments can have very different matrix composition and biomechanical properties. Accordingly, a nondestructive technique to assess constructs during development such that appropriate compositional endpoints can be defined is desirable. Near infrared spectroscopy (NIRS) analysis is a modality being investigated to address the challenges associated with current evaluation techniques, which includes nondestructive compositional assessment. In the present study, cartilage tissue constructs were grown using chondrocytes seeded onto polyglycolic acid (PGA) scaffolds in similar environments in three separate tissue culture experiments and monitored using NIRS. Multivariate partial least squares (PLS) analysis models of NIR spectra were calculated and used to predict tissue composition, with biochemical assay information used as the reference data. Results showed that for combined data from all tissue culture experiments, PLS models were able to assess composition with significant correlations to reference values, including engineered cartilage water (at 5200 cm(-1), R = 0.68, p = 0.03), proteoglycan (at 4310 cm(-1), R = 0.82, p = 0.007), and collagen (at 4610 cm(-1), R = 0.84, p = 0.005). In addition, degradation of PGA was monitored using specific NIRS frequencies. These results demonstrate that NIR spectroscopy combined with multivariate analysis provides a nondestructive modality to assess engineered cartilage, which could provide information to determine the optimal time for tissue harvest for clinical applications.
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Spiller KL, Vunjak-Novakovic G. Clinical translation of controlled protein delivery systems for tissue engineering. Drug Deliv Transl Res 2016; 5:101-15. [PMID: 25787736 DOI: 10.1007/s13346-013-0135-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Strategies that utilize controlled release of drugs and proteins for tissue engineering have enormous potential to regenerate damaged organs and tissues. The multiple advantages of controlled release strategies merit overcoming the significant challenges to translation, including high costs and long, difficult regulatory pathways. This review highlights the potential of controlled release of proteins for tissue engineering and regenerative medicine. We specifically discuss treatment modalities that have reached preclinical and clinical trials, with emphasis on controlled release systems for bone tissue engineering, the most advanced application with several products already in clinic. Possible strategies to address translational and regulatory concerns are also discussed.
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Affiliation(s)
- Kara L Spiller
- Department of Biomedical Engineering, Columbia University, 622 West 168th Street Vanderbilt Clinic 12-234, New York, NY, 10032, USA
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45
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Yang SS, Choi WH, Song BR, Jin H, Lee SJ, Lee SH, Lee J, Kim YJ, Park SR, Park SH, Min BH. Fabrication of an osteochondral graft with using a solid freeform fabrication system. Tissue Eng Regen Med 2015. [DOI: 10.1007/s13770-015-0001-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Murphy MK, Arzi B, Prouty SM, Hu JC, Athanasiou KA. Neocartilage integration in temporomandibular joint discs: physical and enzymatic methods. J R Soc Interface 2015; 12:rsif.2014.1075. [PMID: 25519993 DOI: 10.1098/rsif.2014.1075] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Integration of engineered musculoskeletal tissues with adjacent native tissues presents a significant challenge to the field. Specifically, the avascularity and low cellularity of cartilage elicit the need for additional efforts in improving integration of neocartilage within native cartilage. Self-assembled neocartilage holds significant potential in replacing degenerated cartilage, though its stabilization and integration in native cartilage require further efforts. Physical and enzymatic stabilization methods were investigated in an in vitro model for temporomandibular joint (TMJ) disc degeneration. First, in phase 1, suture, glue and press-fit constructs were compared in TMJ disc intermediate zone defects. In phase 1, suturing enhanced interfacial shear stiffness and strength immediately; after four weeks, a 15-fold increase in stiffness and a ninefold increase in strength persisted over press-fit. Neither suture nor glue significantly altered neocartilage properties. In phase 2, the effects of the enzymatic stabilization regimen composed of lysyl oxidase, CuSO4 and hydroxylysine were investigated. A full factorial design was employed, carrying forward the best physical method from phase 1, suturing. Enzymatic stabilization significantly increased interfacial shear stiffness after eight weeks. Combined enzymatic stabilization and suturing led to a fourfold increase in shear stiffness and threefold increase in strength over press-fit. Histological analysis confirmed the presence of a collagen-rich interface. Enzymatic treatment additionally enhanced neocartilage mechanical properties, yielding a tensile modulus over 6 MPa and compressive instantaneous modulus over 1200 kPa at eight weeks. Suturing enhances stabilization of neocartilage, and enzymatic treatment enhances functional properties and integration of neocartilage in the TMJ disc. Methods developed here are applicable to other orthopaedic soft tissues, including knee meniscus and hyaline articular cartilage.
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Affiliation(s)
- Meghan K Murphy
- Department of Biomedical Engineering, University of California Davis, Davis, CA, USA
| | - Boaz Arzi
- Department of Surgical and Radiological Sciences, William R. Pritchard Veterinary Medical Teaching Hospital, University of California Davis, Davis, CA, USA
| | - Shannon M Prouty
- Department of Biomedical Engineering, University of California Davis, Davis, CA, USA
| | - Jerry C Hu
- Department of Biomedical Engineering, University of California Davis, Davis, CA, USA
| | - Kyriacos A Athanasiou
- Department of Biomedical Engineering, University of California Davis, Davis, CA, USA Department of Orthopaedic Surgery, University of California Davis, Davis, CA, USA
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Hopper N, Henson F, Brooks R, Ali E, Rushton N, Wardale J. Peripheral blood derived mononuclear cells enhance osteoarthritic human chondrocyte migration. Arthritis Res Ther 2015; 17:199. [PMID: 26249339 PMCID: PMC4528856 DOI: 10.1186/s13075-015-0709-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 07/07/2015] [Indexed: 12/18/2022] Open
Abstract
Introduction A major problem in cartilage repair is the lack of chondrogenic cells migrating from healthy tissue into defects. Cartilage is essentially avascular and therefore its healing is not considered to involve mononuclear cells. Peripheral blood derived mononuclear cells (PBMC) offer a readily available autologous cell source for clinical use and therefore this study was designed to evaluate the effects of PBMCs on chondrocytes and cartilage. Methods Human primary chondrocytes and cartilage tissue explants were taken from patients undergoing total knee replacement (n = 17). Peripheral blood samples were obtained from healthy volunteers (n = 12) and mononuclear cells were isolated by density-gradient centrifugation. Cell migration and chemokinetic potential were measured using a scratch assay, xCELLigence and CyQuant assay. PCR array and quantitative PCR was used to evaluate mRNA expression of 87 cell motility and/or chondrogenic genes. Results The chondrocyte migration rate was 2.6 times higher at 3 hour time point (p < 0.0001) and total number of migrating chondrocytes was 9.7 times higher (p < 0.0001) after three day indirect PBMC stimulus and 8.2 times higher (p < 0.0001) after three day direct co-culture with PBMCs. A cartilage explant model confirmed that PBMCs also exert a chemokinetic role on ex vivo tissue. PBMC stimulation was found to significantly upregulate the mRNA levels of 2 chondrogenic genes; collagen type II (COL2A1 600–fold, p < 0.0001) and SRY box 9 (SOX9 30–fold, p < 0.0001) and the mRNA levels of 7 genes central in cell motility and migration were differentially regulated by 24h PBMC stimulation. Conclusion The results support the concept that PBMC treatment enhances chondrocyte migration without suppressing the chondrogenic phenotype possibly via mechanistic pathways involving MMP9 and IGF1. In the future, peripheral blood mononuclear cells could be used as an autologous point-ofcare treatment to attract native chondrocytes from the diseased tissue to aid in cartilage repair.
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Affiliation(s)
- Niina Hopper
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Addenbrooke's Hospital, Hills Road, BC2 0QQ, Cambridge, UK.
| | - Frances Henson
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK.
| | - Roger Brooks
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Addenbrooke's Hospital, Hills Road, BC2 0QQ, Cambridge, UK.
| | - Erden Ali
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Addenbrooke's Hospital, Hills Road, BC2 0QQ, Cambridge, UK.
| | - Neil Rushton
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Addenbrooke's Hospital, Hills Road, BC2 0QQ, Cambridge, UK.
| | - John Wardale
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Addenbrooke's Hospital, Hills Road, BC2 0QQ, Cambridge, UK.
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Otto IA, Melchels FPW, Zhao X, Randolph MA, Kon M, Breugem CC, Malda J. Auricular reconstruction using biofabrication-based tissue engineering strategies. Biofabrication 2015. [PMID: 26200941 DOI: 10.1088/1758-5090/7/3/032001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Auricular malformations, which impose a significant social and psychological burden, are currently treated using ear prostheses, synthetic implants or autologous implants derived from rib cartilage. Advances in the field of regenerative medicine and biofabrication provide the possibility to engineer functional cartilage with intricate architectures and complex shapes using patient-derived or donor cells. However, the development of a successful auricular cartilage implant still faces a number of challenges. These challenges include the generation of a functional biochemical matrix, the fabrication of a customized anatomical shape, and maintenance of that shape. Biofabrication technologies may have the potential to overcome these challenges due to their ability to reproducibly deposit multiple materials in complex geometries in a highly controllable manner. This topical review summarizes this potential of biofabrication technologies for the generation of implants for auricular reconstruction. In particular, it aims to discuss how biofabrication technologies, although still in pre-clinical phase, could overcome the challenges of generating and maintaining the desired auricular shapes. Finally, remaining bottlenecks and future directions are discussed.
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Affiliation(s)
- I A Otto
- Department of Orthopaedics, University Medical Center Utrecht, Heidelberglaan 100, 3508 GA Utrecht, The Netherlands. Department of Plastic, Reconstructive and Hand Surgery, University Medical Center Utrecht, Heidelberglaan 100, 3508 GA Utrecht, The Netherlands
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Yu Y, Brouillette MJ, Seol D, Zheng H, Buckwalter JA, Martin JA. Use of recombinant human stromal cell-derived factor 1α-loaded fibrin/hyaluronic acid hydrogel networks to achieve functional repair of full-thickness bovine articular cartilage via homing of chondrogenic progenitor cells. Arthritis Rheumatol 2015; 67:1274-85. [PMID: 25623441 DOI: 10.1002/art.39049] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 01/20/2015] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Articular cartilage damage after joint trauma seldom heals and often leads to osteoarthritis. We previously identified a migratory chondrogenic progenitor cell (CPC) population that responds chemotactically to cell death and rapidly repopulates the injured cartilage matrix, which suggests a potential approach for articular cartilage repair. This study was undertaken to determine whether recombinant human stromal cell-derived factor 1α (rhSDF-1α), a potent CPC chemoattractant, would improve the quality of cartilage regeneration, hypothesizing that increased recruitment of CPCs by rhSDF-1α would promote the formation of cartilage matrix upon chondrogenic induction. METHODS Full-thickness bovine chondral defects were filled with hydrogel, composed of fibrin and hyaluronic acid and containing rhSDF-1α. Cell migration was monitored, followed by chondrogenic induction. Regenerated tissue was evaluated by histology, immunohistochemistry, and scanning electron microscopy. Push-out tests and unconfined compression tests were performed to assess the strength of tissue integration and the mechanical properties of the regenerated cartilage. RESULTS Use of rhSDF-1α dramatically improved CPC recruitment to the chondral defects at 12 days. After 6 weeks under chondrogenic conditions, cell morphology, proteoglycan density, and the ultrastructure of the repair tissue were all similar to that found in native cartilage. Compared with empty controls, neocartilage generated in rhSDF-1α-containing defects showed significantly greater interfacial strength, and acquired mechanical properties comparable to those of native cartilage. CONCLUSION This study showed that stimulating local CPC recruitment prior to treatment with chondrogenic factors significantly improves the biochemical and mechanical properties of the cartilage tissue formed in chondral defects. This simple approach may be implemented in vivo as a one-step procedure by staging the release of chemokine and chondrogenic factors from within the hydrogel, which can be achieved using smart drug-delivery systems.
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Affiliation(s)
- Yin Yu
- University of Iowa, Iowa City
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Li KC, Hu YC. Cartilage tissue engineering: recent advances and perspectives from gene regulation/therapy. Adv Healthc Mater 2015; 4:948-68. [PMID: 25656682 DOI: 10.1002/adhm.201400773] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 01/10/2015] [Indexed: 12/16/2022]
Abstract
Diseases in articular cartilages affect millions of people. Despite the relatively simple biochemical and cellular composition of articular cartilages, the self-repair ability of cartilage is limited. Successful cartilage tissue engineering requires intricately coordinated interactions between matrerials, cells, biological factors, and phycial/mechanical factors, and still faces a multitude of challenges. This article presents an overview of the cartilage biology, current treatments, recent advances in the materials, biological factors, and cells used in cartilage tissue engineering/regeneration, with strong emphasis on the perspectives of gene regulation (e.g., microRNA) and gene therapy.
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Affiliation(s)
- Kuei-Chang Li
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu Taiwan 300
| | - Yu-Chen Hu
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu Taiwan 300
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