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Davis EER, Manzoni TJ, Bianchi VJ, Weber JF, Wu PH, Regmi SC, Waldman SD, Schmidt TA, Su AW, Kandel RA, Parreno J. Passaged Articular Chondrocytes From the Superficial Zone and Deep Zone Can Regain Zone-Specific Properties After Redifferentiation. Am J Sports Med 2024; 52:1075-1087. [PMID: 38419462 DOI: 10.1177/03635465241230031] [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: 03/02/2024]
Abstract
BACKGROUND Bioengineered cartilage is a developing therapeutic to repair cartilage defects. The matrix must be rich in collagen type II and aggrecan and mechanically competent, withstanding compressive and shearing loads. Biomechanical properties in native articular cartilage depend on the zonal architecture consisting of 3 zones: superficial, middle, and deep. The superficial zone chondrocytes produce lubricating proteoglycan-4, whereas the deep zone chondrocytes produce collagen type X, which allows for integration into the subchondral bone. Zonal and chondrogenic expression is lost after cell number expansion. Current cell-based therapies have limited capacity to regenerate the zonal structure of native cartilage. HYPOTHESIS Both passaged superficial and deep zone chondrocytes at high density can form bioengineered cartilage that is rich in collagen type II and aggrecan; however, only passaged superficial zone-derived chondrocytes will express superficial zone-specific proteoglycan-4, and only passaged deep zone-derived chondrocytes will express deep zone-specific collagen type X. STUDY DESIGN Controlled laboratory study. METHODS Superficial and deep zone chondrocytes were isolated from bovine joints, and zonal subpopulations were separately expanded in 2-dimensional culture. At passage 2, superficial and deep zone chondrocytes were seeded, separately, in scaffold-free 3-dimensional culture within agarose wells and cultured in redifferentiation media. RESULTS Monolayer expansion resulted in loss of expression for proteoglycan-4 and collagen type X in passaged superficial and deep zone chondrocytes, respectively. By passage 2, superficial and deep zone chondrocytes had similar expression for dedifferentiated molecules collagen type I and tenascin C. Redifferentiation of both superficial and deep zone chondrocytes led to the expression of collagen type II and aggrecan in both passaged chondrocyte populations. However, only redifferentiated deep zone chondrocytes expressed collagen type X, and only redifferentiated superficial zone chondrocytes expressed and secreted proteoglycan-4. Additionally, redifferentiated deep zone chondrocytes produced a thicker and more robust tissue compared with superficial zone chondrocytes. CONCLUSION The recapitulation of the primary phenotype from passaged zonal chondrocytes introduces a novel method of functional bioengineering of cartilage that resembles the zone-specific biological properties of native cartilage. CLINICAL RELEVANCE The recapitulation of the primary phenotype in zonal chondrocytes could be a possible method to tailor bioengineered cartilage to have zone-specific expression.
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Affiliation(s)
- Elizabeth E R Davis
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Thomas J Manzoni
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
| | - Vanessa J Bianchi
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Joanna F Weber
- Department of Mechanical and Materials Engineering, Queen's University, Kingston, Ontario, Canada
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Po Han Wu
- Department of Human Biology, University of Toronto, Toronto, Ontario, Canada
| | - Suresh C Regmi
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Stephen D Waldman
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
- Department of Chemical Engineering, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Tannin A Schmidt
- Biomedical Engineering Department, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Alvin W Su
- Nemours Sports Medicine, Department of Orthopaedic Surgery, Nemours Children's Hospital, Wilmington, Delaware, USA
| | - Rita A Kandel
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Justin Parreno
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, USA
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Tee CA, Han J, Hui JHP, Lee EH, Yang Z. Perspective in Achieving Stratified Articular Cartilage Repair Using Zonal Chondrocytes. TISSUE ENGINEERING. PART B, REVIEWS 2023. [PMID: 36416231 DOI: 10.1089/ten.teb.2022.0142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Articular cartilage is composed of superficial, medial, and deep zones, which endow the tissue with biphasic mechanical properties to withstand shearing force and compressional loading. The tissue has very limited self-healing capacity once it is damaged due to its avascular nature. To prevent the early onset of osteoarthritis, surgical intervention is often needed to repair the injured cartilage. Current noncell-based and cell-based treatments focus on the regeneration of homogeneous cartilage to achieve bulk compressional properties without recapitulating the zonal matrix and mechanical properties, and often oversight in aiding cartilage integration between host and repair cartilage. It is hypothesized that achieving zonal architecture in articular cartilage tissue repair could improve the structural and mechanical integrity and thus the life span of the regenerated tissue. Engineering stratified cartilage constructs using zonal chondrocytes have been hypothesized to improve the functionality and life span of the regenerated tissues. However, stratified articular cartilage repair has yet to be realized to date due to the lack of an efficient zonal chondrocyte isolation method and an expansion platform that would allow both cell propagation and phenotype maintenance. Various attempts and challenges in achieving stratified articular cartilage repair in a clinical setting are evaluated. In this review, different perspectives on achieving stratified articular cartilage repair using zonal chondrocytes are described. The effectiveness of different zonal chondrocyte isolation and zonal chondrocyte phenotype maintenance methodologies during expansion are compared, with the focus on recent advancements in zonal chondrocyte isolation and expansion that could present a possible strategy to overcome the limitation of applying zonal chondrocytes to facilitate zonal architecture development in articular cartilage regeneration. Impact Statement The zonal properties of articular cartilage contribute to the biphasic mechanical properties of the tissues. Recapitulation of the zonal architecture in regenerated articular cartilage has been hypothesized to improve the mechanical integrity and life span of the regenerated tissue. This review provides a comprehensive discussion on the current state of research relevant to achieving stratified articular cartilage repair using zonal chondrocytes from different perspectives. This review further elaborates on a zonal chondrocyte production pipeline that can potentially overcome the current clinical challenges and future work needed to realize stratified zonal chondrocyte implantation in a clinical setting.
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Affiliation(s)
- Ching Ann Tee
- Critical Analytics for Manufacturing Personalised-Medicine Interdisciplinary Research Group, Singapore-MIT Alliance in Research and Technology, Singapore, Singapore.,Department of Orthopaedic Surgery, National University of Singapore, Singapore, Singapore
| | - Jongyoon Han
- Critical Analytics for Manufacturing Personalised-Medicine Interdisciplinary Research Group, Singapore-MIT Alliance in Research and Technology, Singapore, Singapore.,Department of Electrical Engineering and Computer Science, Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - James Hoi Po Hui
- Department of Orthopaedic Surgery, National University of Singapore, Singapore, Singapore.,NUS Tissue Engineering Program, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Eng Hin Lee
- Critical Analytics for Manufacturing Personalised-Medicine Interdisciplinary Research Group, Singapore-MIT Alliance in Research and Technology, Singapore, Singapore.,Department of Orthopaedic Surgery, National University of Singapore, Singapore, Singapore.,NUS Tissue Engineering Program, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Zheng Yang
- Critical Analytics for Manufacturing Personalised-Medicine Interdisciplinary Research Group, Singapore-MIT Alliance in Research and Technology, Singapore, Singapore.,Department of Orthopaedic Surgery, National University of Singapore, Singapore, Singapore.,NUS Tissue Engineering Program, Life Sciences Institute, National University of Singapore, Singapore, Singapore
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Tee CA, Yang Z, Wu Y, Ren X, Baranski M, Lin DJ, Hassan A, Han J, Lee EH. A Pre-Clinical Animal Study for Zonal Articular Cartilage Regeneration Using Stratified Implantation of Microcarrier Expanded Zonal Chondrocytes. Cartilage 2022; 13:19476035221093063. [PMID: 35446156 PMCID: PMC9152227 DOI: 10.1177/19476035221093063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE The zonal properties of articular cartilage critically contribute to the mechanical support and lubrication of the tissue. Current treatments for articular cartilage have yet to regenerate this zonal architecture, thus compromising the functional efficacy of the repaired tissue and leading to tissue degeneration in the long term. In this study, the efficacy of zonal cartilage regeneration through bilayered implantation of expanded autologous zonal chondrocytes was investigated in a porcine chondral defect model. DESIGN Autologous chondrocytes extracted from articular cartilage in the non-weight bearing trochlea region of the knee were subjected to an expansion-sorting strategy, integrating dynamic microcarrier (dMC) culture, and spiral microchannel size-based zonal chondrocyte separation. Zonal chondrocytes were then implanted as bilayered fibrin hydrogel construct in a porcine knee chondral defect model. Repair efficacy was compared with implantation with cell-free fibrin hydrogel and full thickness (FT) cartilage-derived heterogenous chondrocytes. Cartilage repair was evaluated 6 months after implantation. RESULTS Sufficient numbers of zonal chondrocytes for implantation were generated from the non-weight bearing cartilage. Six-month repair outcomes showed that bilayered implantation of dMC-expanded zonal chondrocytes resulted in substantial recapitulation of zonal architecture, including chondrocyte arrangement, specific Proteoglycan 4 distribution, and collagen alignment, that was accompanied by healthier underlying subchondral bone. CONCLUSION These results demonstrate that with appropriate expansion and isolation of zonal chondrocytes, the strategy of stratified zonal chondrocyte implantation represents a significant advancement to Autologous Chondrocyte Implantation-based cartilage regeneration, with the potential to improve the long-term integrity of the regenerated tissues.
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Affiliation(s)
- Ching Ann Tee
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,Critical Analytics for Manufacturing Personalised-Medicine, Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore
| | - Zheng Yang
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore
| | - Yingnan Wu
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore
| | - Xiafei Ren
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore
| | - Maciej Baranski
- Critical Analytics for Manufacturing Personalised-Medicine, Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore
| | - Daryl Jimian Lin
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore
| | - Afizah Hassan
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore
| | - Jongyoon Han
- Critical Analytics for Manufacturing Personalised-Medicine, Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore,Department of Electrical Engineering and Computer Science, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Eng Hin Lee
- Department of Orthopaedic Surgery, National University of Singapore, Singapore,Critical Analytics for Manufacturing Personalised-Medicine, Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore,NUS Tissue Engineering Program, Life Science Institute, National University of Singapore, Singapore,Eng Hin Lee, Department of Orthopaedic Surgery, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block 11, 119288 Singapore.
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Zonal-Layered Chondrocyte Sheets for Repairment of Full-Thickness Articular Cartilage Defect: A Mini-Pig Model. Biomedicines 2021; 9:biomedicines9121806. [PMID: 34944622 PMCID: PMC8698967 DOI: 10.3390/biomedicines9121806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
The cell sheet technique is a promising approach for tissue engineering, and the present study is aimed to determine a better configuration of cell sheets for cartilage repair. For stratified chondrocyte sheets (S-CS), articular chondrocytes isolated from superficial, middle, and deep zones were stacked accordingly. Heterogeneous chondrocyte sheets (H-CS) were obtained by mixing zonal chondrocytes. The expressions of chondrocytes, cytokine markers, and glycosaminoglycan (GAG) production were assessed in an in vitro assay. The curative effect was investigated in an in vivo porcine osteochondral defect model. The S-CS showed a higher cell viability, proliferation rate, expression of chondrogenic markers, secretion of tissue inhibitor of metalloproteinase, and GAG production level than the H-CS group. The expressions of ECM destruction enzyme and proinflammatory cytokines were lower in the S-CS group. In the mini-pigs articular cartilage defect model, the S-CS group had a higher International Cartilage Repair Society (ICRS) macroscopic score and displayed a zonal structure that more closely resembled the native cartilage than those implanted with the H-CS. Our study demonstrated that the application of the S-CS increased the hyaline cartilage formation and improved the surgical outcome of chondrocyte implication, offering a better tissue engineering strategy for treating articular cartilage defects.
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Hurtig M, Zaghoul I, Sheardown H, Schmidt TA, Liu L, Zhang L, Elsaid KA, Jay GD. Two compartment pharmacokinetic model describes the intra-articular delivery and retention of rhprg4 following ACL transection in the Yucatan mini pig. J Orthop Res 2019; 37:386-396. [PMID: 30488470 PMCID: PMC7201402 DOI: 10.1002/jor.24191] [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: 12/13/2017] [Accepted: 10/03/2018] [Indexed: 02/04/2023]
Abstract
Treatment of the injured joint with rhPRG4 is based on recent observations that inflammation diminishes expression of native PRG4. Re-establishing lubrication between pressurized and sliding cartilage surfaces during locomotion promotes the nascent expression of PRG4 and thus intra-articular (IA) treatment strategies should be supported by pharmacokinetic evidence establishing the residence time of rhPRG4. A total of 21 Yucatan minipigs weighing ∼55 kg each received 4 mg of 131 I-rhPRG4 delivered by IA injection 5 days following surgical ACL transection. Animals were sequentially euthanized following IA rhPRG4 at 10 min (time zero), 24, 72 h, 6, 13 and 20 days later. The decay of the 131 I-rhPRG4 was measured relative to a non-injected aliquot and normalized to the weight of cartilage samples, menisci and synovium, and known cartilage volumes from each compartment surface obtained from representative Yucatan minipig knees. Decay of 131 I-rhPRG4 from joint tissues best fit a two-compartment model with an α half-life (t1/2α ) of 11.28 h and β half-life (t1/2β ) of 4.81 days. The tibial and femoral cartilage, meniscii, and synovium retained 7.7% of dose at 24 h. High concentrations of rhPRG4 were found in synovial fluid (SF) that was non-aspiratable and resided on the articular surfaces, removable by irrigation, at 10 min following 131 I-rhPRG4 injection. Synovial fluid K21 exceeded K12 and SF t1/2β was 28 days indicating SF is the reservoir for rhPRG4 following IA injection. Clinical Significance: rhPRG4 following IA delivery in a traumatized joint populates articular surfaces for a considerable period and may promote the native expression of PRG4. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:386-396, 2019.
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Affiliation(s)
- Mark Hurtig
- Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Iman Zaghoul
- Department of Pharmaceutical Sciences, Massachusetts College of Pharmacy and Health Sciences, Boston, Massachusetts
| | - Heather Sheardown
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Tannin A. Schmidt
- School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut,,Biomedical Engineering Department, University of Connecticut Health Center, Farmington, Connecticut
| | - Lina Liu
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Ling Zhang
- Department of Emergency Medicine, Warren Alpert Medical School, Brown University, 1 Hoppin Street, Coro West Suite 112, Providence, Rhode Island 02903
| | - Khaled A. Elsaid
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, California
| | - Gregory D. Jay
- Department of Emergency Medicine, Warren Alpert Medical School, Brown University, 1 Hoppin Street, Coro West Suite 112, Providence, Rhode Island 02903,,Division of Biomedical Engineering, School of Engineering at Brown University, Providence, Rhode Island
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Parreno J, Bianchi VJ, Sermer C, Regmi SC, Backstein D, Schmidt TA, Kandel RA. Adherent agarose mold cultures: An in vitro platform for multi-factorial assessment of passaged chondrocyte redifferentiation. J Orthop Res 2018; 36:2392-2405. [PMID: 29575101 DOI: 10.1002/jor.23896] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 03/14/2018] [Indexed: 02/04/2023]
Abstract
Generating the best possible bioengineered cartilage from passaged chondrocytes requires culture condition optimization. In this study, the use of adherent agarose mold (adAM) cultures to support redifferentiation of passaged twice (P2) chondrocytes and serve as a scalable platform to assess the effect of growth factor combinations on proteoglycan accumulation by cells was examined. By 2 days in adAM culture, bovine P2 cells were partially redifferentiated as demonstrated by regression of actin-based dedifferentiation signalling and fibroblast matrix and contractile gene expression. By day 10, aggrecan and type II collagen gene expression were significantly increased in adAM cultured cells. At day 20, a continuous layer of cartilage tissue was observed. There was no evidence of tissue contraction by P2 cells in adAM cultures. The matrix properties of the resultant tissue as well as proteoglycan 4 (PRG4) secreted by the cells were dependent on the initial cell seeding density. AdAM cultures were scalable and culture within small 3 mm diameter adAM allowed for multi-factorial assessment of growth factors on proteoglycan accumulation by human P2 chondrocytes. Although there was a patient specific response in proteoglycan accumulation to the various cocktail combinations, the cocktail consisting of 2 ng/ml TGFβ1, 10 ng/ml FGF2, and 250 ng/ml FGF18 resulted in a consistent increase in alcian blue tissue staining. Additional studies will be required to identify the optimal conditions to bioengineer articular cartilage tissue for clinical use. However, the results to date suggest that adAM cultures may be suitable to use for high throughput assessment. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2392-2405, 2018.
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Affiliation(s)
- Justin Parreno
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
| | - Vanessa J Bianchi
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Corey Sermer
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Suresh C Regmi
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - David Backstein
- Division of Orthopaedics, Mount Sinai Hospital, Toronto, ON, Canada
| | - Tannin A Schmidt
- Biomedical Engineering Department, University of Connecticut Health Center, Farmington, Connecticut
| | - Rita A Kandel
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
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Delve E, Parreno J, Co V, Wu PH, Chong J, Di Scipio M, Kandel RA. CDC42 regulates the expression of superficial zone molecules in part through the actin cytoskeleton and myocardin-related transcription factor-A. J Orthop Res 2018. [PMID: 29537109 DOI: 10.1002/jor.23892] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is a degenerative disease that initially manifests as loss of the superficial zone (SZ) of articular cartilage. SZ chondrocytes (SZC) differ in morphology from other chondrocytes as they are elongated and oriented parallel to the tissue surface. Proteoglycan 4 (PRG4) and tenascin C (TNC) are molecules expressed by SZC, which have been shown to be chondroprotective. Identification of the signalling pathway(s) regulating expression of SZ molecules may lead to a therapeutic target that can be used to delay or prevent the onset of OA. The hypothesis of this study is that expression of SZ molecules are regulated in part, by the CDC42-actin-myocardin-related transcription factor-A (MRTF-A) signaling pathway. SZC from bovine metacarpal-phalangeal joints were isolated and grown in monolayer culture. Each target in the CDC42-actin-MRTF-A pathway was inhibited and the effect on cell shape, actin cytoskeleton status, and expression of PRG4 and TNC were determined. Treatment with the CDC42 inhibitor ML141 decreased PRG4 and TNC expression, and correlated with increased cell circularity and G-/F-actin ratio. PRG4 and TNC expression were differentially regulated by actin depolymerizing agents, latrunculin B and cytochalasin D. Chemical inhibition of MRTF-A resulted in decreased expression of both PRG4 and TNC; however, specific knockdown by small interfering RNA only decreased expression of TNC indicating that TNC, but not PRG4, is regulated by MRTF-A. Although PRG4 and TNC expression are both regulated by CDC42 and actin, it appears to occur through different downstream signaling pathways. Further study is required to elucidate the pathway regulating PRG4. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2421-2430, 2018.
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Affiliation(s)
- Elizabeth Delve
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario
| | - Justin Parreno
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
| | - Vivian Co
- University of Ontario Institute of Technology, Oshawa, Ontario
| | - Po-Han Wu
- The Department of Human Biology, University of Toronto, Toronto, Ontario
| | - Jasmine Chong
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario
| | - Matteo Di Scipio
- Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario
| | - Rita A Kandel
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario.,Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario
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8
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Characterization and application of size-sorted zonal chondrocytes for articular cartilage regeneration. Biomaterials 2018. [DOI: 10.1016/j.biomaterials.2018.02.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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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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Schrobback K, Malda J, Crawford RW, Upton Z, Leavesley DI, Klein TJ. Effects of oxygen on zonal marker expression in human articular chondrocytes. Tissue Eng Part A 2012; 18:920-33. [PMID: 22097912 DOI: 10.1089/ten.tea.2011.0088] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Articular cartilage is organized in depth zones with phenotypically distinct subpopulations of chondrocytes that are exposed to different oxygen tensions. Despite growing evidence of the critical role for oxygen in chondrogenesis, little is known about its effect on chondrocytes from different zones. This study evaluates zonal marker expression of human articular chondrocytes from different zones under various oxygen tensions. Chondrocytes isolated from full-thickness, superficial, and middle/deep cartilage from knee replacement surgeries were expanded and redifferentiated under hypoxic (5% O(2)) or normoxic (20% O(2)) conditions. Differentiation under hypoxia increased expression of hypoxia-inducible factors 1alpha and 2alpha and accumulation of extracellular matrix, particularly in middle/deep chondrocytes, and favored re-expression of proteoglycan 4 by superficial chondrocytes compared with middle/deep cells. Zone-dependent expression of clusterin varied with culture duration. These results demonstrate that zonal chondrocytes retain important phenotypic differences during in vitro cultivation, and that these characteristics can be improved by altering the oxygen environment. However, transcript levels for pleiotrophin, cartilage intermediate layer protein, and collagen type X were similar between zones, challenging their reliability as zonal markers for tissue-engineered cartilage from osteoarthritis patients. Key factors including oxygen tension and cell source should be considered to prescribe zone-specific properties to tissue-engineered cartilage.
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Affiliation(s)
- Karsten Schrobback
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia.
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Klein TJ, Malda J, Sah RL, Hutmacher DW. Tissue engineering of articular cartilage with biomimetic zones. TISSUE ENGINEERING PART B-REVIEWS 2010; 15:143-57. [PMID: 19203206 DOI: 10.1089/ten.teb.2008.0563] [Citation(s) in RCA: 205] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Articular cartilage damage is a persistent and increasing problem with the aging population, and treatments to achieve biological repair or restoration remain a challenge. Cartilage tissue engineering approaches have been investigated for over 20 years, but have yet to achieve the consistency and effectiveness for widespread clinical use. One of the potential reasons for this is that the engineered tissues do not have or establish the normal zonal organization of cells and extracellular matrix that appears critical for normal tissue function. A number of approaches are being taken currently to engineer tissue that more closely mimics the organization of native articular cartilage. This review focuses on the zonal organization of native articular cartilage, strategies being used to develop such organization, the reorganization that occurs after culture or implantation, and future prospects for the tissue engineering of articular cartilage with biomimetic zones.
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Affiliation(s)
- Travis J Klein
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
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Kuo YC, Tsai YT. Inverted Colloidal Crystal Scaffolds for Uniform Cartilage Regeneration. Biomacromolecules 2010; 11:731-9. [DOI: 10.1021/bm901312x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, Republic of China
| | - Yu-Tai Tsai
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, Republic of China
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Schuurman W, Gawlitta D, Klein TJ, ten Hoope W, van Rijen MHP, Dhert WJA, van Weeren PR, Malda J. Zonal chondrocyte subpopulations reacquire zone-specific characteristics during in vitro redifferentiation. Am J Sports Med 2009; 37 Suppl 1:97S-104S. [PMID: 19846691 DOI: 10.1177/0363546509350978] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND If chondrocytes from the superficial, middle, and deep zones of articular cartilage could maintain or regain their characteristic properties during in vitro culture, it would be feasible to create constructs comprising these distinctive zones. HYPOTHESIS Zone-specific characteristics of zonal cell populations will disappear during 2-dimensional expansion but will reappear after 3-dimensional redifferentiation, independent of the culture technique used (alginate beads versus pellet culture). STUDY DESIGN Controlled laboratory study. METHODS Equine articular chondrocytes from the 3 zones were expanded in monolayer culture (8 donors) and subsequently redifferentiated in pellet and alginate bead cultures for up to 4 weeks. Glycosaminoglycans and DNA were quantified, along with immunohistochemical assessment of the expression of various zonal markers, including cartilage oligomeric protein (marking cells from the deeper zones) and clusterin (specifically expressed by superficial chondrocytes). RESULTS Cell yield varied between zones, but proliferation rates did not show significant differences. Expression of all evaluated zonal markers was lost during expansion. Compared to the alginate bead cultures, pellet cultures showed a higher amount of glycosaminoglycans produced per DNA after redifferentiation. In contrast to cells in pellet cultures, cells in alginate beads regained zonal differences, as evidenced by zone-specific reappearance of cartilage oligomeric protein and clusterin, as well as significantly higher glycosaminoglycans production by cells from the deep zone compared to the superficial zone. CONCLUSION Chondrocytes isolated from the 3 zones of equine cartilage can restore their zone-specific matrix expression when cultured in alginate after in vitro expansion. CLINICAL RELEVANCE Appreciation of the zonal differences can lead to important advances in cartilage tissue engineering. Findings support the use of hydrogels such as alginate for engineering zonal cartilage constructs.
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Affiliation(s)
- Wouter Schuurman
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
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Anders JO, Mollenhauer J, Beberhold A, Kinne RW, Venbrocks RA. Gelatin-based haemostyptic Spongostan as a possible three-dimensional scaffold for a chondrocyte matrix? ACTA ACUST UNITED AC 2009; 91:409-16. [DOI: 10.1302/0301-620x.91b3.20869] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The gelatin-based haemostyptic compound Spongostan was tested as a three-dimensional (3D) chondrocyte matrix in an in vitro model for autologous chondrocyte transplantation using cells harvested from bovine knees. In a control experiment of monolayer cultures, the proliferation or de-differentiation of bovine chondrocytes was either not or only marginally influenced by the presence of Spongostan (0.3 mg/ml). In monolayers and 3-D Minusheet culture chambers, the cartilage-specific differentiation markers aggrecan and type-II collagen were ubiquitously present in a cell-associated fashion and in the pericellular matrix. The Minusheet cultures usually showed a markedly higher mRNA expression than monolayer cultures irrespective of whether Spongostan had been present or not during culture. Although the de-differentiation marker type-I collagen was also present, the ratio of type-I to type-II collagen or aggrecan to type-I collagen remained higher in Minusheet 3-D cultures than in monolayer cultures irrespective of whether Spongostan had been included in or excluded from the monolayer cultures. The concentration of GAG in Minusheet cultures reached its maximum after 14 days with a mean of 0.83 ± 0.8 μg/106 cells; mean ±, sem, but remained considerably lower than in monolayer cultures with/without Spongostan. Our results suggest that Spongostan is in principle suitable as a 3-D chondrocyte matrix, as demonstrated in Minusheet chambers, in particular for a culture period of 14 days. Clinically, differentiating effects on chondrocytes, simple handling and optimal formability may render Spongostan an attractive 3-D scaffold for autologous chondrocyte transplantation.
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Affiliation(s)
- J. O. Anders
- Rheumatology Unit, University Hospital Jena, Klosterlausnitzerstrasse 81, D-07607 Eisenberg, Germany
| | - J. Mollenhauer
- Natural and Medical Sciences Institute (NMI), University of Tuebingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany
| | - A. Beberhold
- Rheumatology Unit, University Hospital Jena, Klosterlausnitzerstrasse 81, D-07607 Eisenberg, Germany
| | - R. W. Kinne
- Rheumatology Unit, University Hospital Jena, Klosterlausnitzerstrasse 81, D-07607 Eisenberg, Germany
| | - R. A. Venbrocks
- Rheumatology Unit, University Hospital Jena, Klosterlausnitzerstrasse 81, D-07607 Eisenberg, Germany
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Smith MM, Cake MA, Ghosh P, Schiavinato A, Read RA, Little CB. Significant synovial pathology in a meniscectomy model of osteoarthritis: modification by intra-articular hyaluronan therapy. Rheumatology (Oxford) 2008; 47:1172-8. [PMID: 18565987 PMCID: PMC2468886 DOI: 10.1093/rheumatology/ken219] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Objective. IA therapy with hyaluronan (HA) is reported to provide symptomatic relief and disease modification in OA. This study assessed the pathological changes in the synovium of an ovine model of OA and evaluated the effects of two HA preparations on this pathology. Methods. Eighteen sheep had bilateral lateral meniscectomy to induce OA. Four months post-surgery animals received IA saline or HA (Hyalgan®) weekly for 5 weeks or three injections of an amide derivative of HA (HYADD®4-G) every 2 weeks (n = 6 per group). Six months after meniscectomy, sheep were killed, knee joint synovium processed, scored for pathological change and compared with synovium from non-operated animals. Sections of synovium from normal and treated joints were also immunostained for TNF-α, HSP-47, TGF-β, CD44, connective tissue growth factor (CTGF) or iNOS. HA synthesis by synovial fibroblasts isolated from each OA joint was quantified. Results. Aggregate scores of pathological change were higher in OA joint synovia compared with controls, with individual measures of subintimal fibrosis and vascularity predominantly affected. Depth of intimal fibrosis was also significantly higher in meniscectomized joints. IA treatment with Hyalgan® decreased aggregate score, vascularity and depth of fibrosis. HYADD®4-G treatment decreased vascularity, intimal hyperplasia and increased high-molecular weight HA synthesis by synovial fibroblasts. CD44, CTGF or iNOS expression was increased in the synovial lining of OA joints compared with normal, but there was no significant modulation of this increase by either HA preparation. Conclusion. Increased fibrosis and vascularity are hallmarks of pathological change in synovium in this meniscectomy model of OA. Both the IA HA and an amide derivative of HA reduced aspects of this pathology thus providing a potential mechanism for improving joint mobility and function in OA.
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Affiliation(s)
- M M Smith
- Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute of Medical Research, University of Sydney, Royal North Shore Hospital, St Leonards, NSW, Australia.
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