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Liu K, Zhang B, Zhang X. Promoting Articular Cartilage Regeneration through Microenvironmental Regulation. J Immunol Res 2024; 2024:4751168. [PMID: 39104594 PMCID: PMC11300091 DOI: 10.1155/2024/4751168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 06/21/2024] [Accepted: 07/02/2024] [Indexed: 08/07/2024] Open
Abstract
In recent years, as the aging population continues to grow, osteoarthritis (OA) has emerged as a leading cause of disability, with its incidence rising annually. Current treatments of OA include exercise and medications in the early stages and total joint replacement in the late stages. These approaches only relieve pain and reduce inflammation; however, they have significant side effects and high costs. Therefore, there is an urgent need to identify effective treatment methods that can delay the pathological progression of this condition. The changes in the articular cartilage microenvironment, which are complex and diverse, can aggravate the pathological progression into a vicious cycle, inhibiting the repair and regeneration of articular cartilage. Understanding these intricate changes in the microenvironment is crucial for devising effective treatment modalities. By searching relevant research articles and clinical trials in PubMed according to the keywords of articular cartilage, microenvironment, OA, mechanical force, hypoxia, cytokine, and cell senescence. This study first summarizes the factors affecting articular cartilage regeneration, then proposes corresponding treatment strategies, and finally points out the future research direction. We find that regulating the opening of mechanosensitive ion channels, regulating the expression of HIF-1, delivering growth factors, and clearing senescent cells can promote the formation of articular cartilage regeneration microenvironment. This study provides a new idea for the treatment of OA in the future, which can promote the regeneration of articular cartilage through the regulation of the microenvironment so as to achieve the purpose of treating OA.
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Affiliation(s)
- Kai Liu
- Department of Orthopedic SurgeryXin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-constructed by the Province and MinistryGuangxi Medical University, Nanning, Guangxi 530021, China
| | - Bingjun Zhang
- Department of Orthopedic SurgeryXin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Xiaoling Zhang
- Department of Orthopedic SurgeryXin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-constructed by the Province and MinistryGuangxi Medical University, Nanning, Guangxi 530021, China
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Fan Y, Bian X, Meng X, Li L, Fu L, Zhang Y, Wang L, Zhang Y, Gao D, Guo X, Lammi MJ, Peng G, Sun S. Unveiling inflammatory and prehypertrophic cell populations as key contributors to knee cartilage degeneration in osteoarthritis using multi-omics data integration. Ann Rheum Dis 2024; 83:926-944. [PMID: 38325908 PMCID: PMC11187367 DOI: 10.1136/ard-2023-224420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 01/23/2024] [Indexed: 02/09/2024]
Abstract
OBJECTIVES Single-cell and spatial transcriptomics analysis of human knee articular cartilage tissue to present a comprehensive transcriptome landscape and osteoarthritis (OA)-critical cell populations. METHODS Single-cell RNA sequencing and spatially resolved transcriptomic technology have been applied to characterise the cellular heterogeneity of human knee articular cartilage which were collected from 8 OA donors, and 3 non-OA control donors, and a total of 19 samples. The novel chondrocyte population and marker genes of interest were validated by immunohistochemistry staining, quantitative real-time PCR, etc. The OA-critical cell populations were validated through integrative analyses of publicly available bulk RNA sequencing data and large-scale genome-wide association studies. RESULTS We identified 33 cell population-specific marker genes that define 11 chondrocyte populations, including 9 known populations and 2 new populations, that is, pre-inflammatory chondrocyte population (preInfC) and inflammatory chondrocyte population (InfC). The novel findings that make this an important addition to the literature include: (1) the novel InfC activates the mediator MIF-CD74; (2) the prehypertrophic chondrocyte (preHTC) and hypertrophic chondrocyte (HTC) are potentially OA-critical cell populations; (3) most OA-associated differentially expressed genes reside in the articular surface and superficial zone; (4) the prefibrocartilage chondrocyte (preFC) population is a major contributor to the stratification of patients with OA, resulting in both an inflammatory-related subtype and a non-inflammatory-related subtype. CONCLUSIONS Our results highlight InfC, preHTC, preFC and HTC as potential cell populations to target for therapy. Also, we conclude that profiling of those cell populations in patients might be used to stratify patient populations for defining cohorts for clinical trials and precision medicine.
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Affiliation(s)
- Yue Fan
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
- Collaborative Innovation Center of Endemic Diseases and Health Promotion in Silk Road Region, Shaanxi Province; Key Laboratory of Trace Elements and Endemic Diseases, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education; Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xuzhao Bian
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Xiaogao Meng
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
- Center for Cell Lineage and Development, CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China
| | - Lei Li
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Laiyi Fu
- School of Automation Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yanan Zhang
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Long Wang
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
- Center for Evidence-Based Medicine and Clinical Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Yan Zhang
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
- Department of Orthopaedics, Honghui Hospital, Xi'an, Shaanxi, China
| | - Dalong Gao
- Department of Orthopaedics, The Central Hospital of Xianyang, Xianyang, China
| | - Xiong Guo
- Collaborative Innovation Center of Endemic Diseases and Health Promotion in Silk Road Region, Shaanxi Province; Key Laboratory of Trace Elements and Endemic Diseases, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Mikko Juhani Lammi
- Department of Integrative Medical Biology, University of Umeå, Umeå, Sweden
| | - Guangdun Peng
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Center for Cell Lineage and Development, CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shiquan Sun
- Center for Single-Cell Omics and Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
- Collaborative Innovation Center of Endemic Diseases and Health Promotion in Silk Road Region, Shaanxi Province; Key Laboratory of Trace Elements and Endemic Diseases, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education; Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Ignatyeva N, Gavrilov N, Timashev PS, Medvedeva EV. Prg4-Expressing Chondroprogenitor Cells in the Superficial Zone of Articular Cartilage. Int J Mol Sci 2024; 25:5605. [PMID: 38891793 PMCID: PMC11171992 DOI: 10.3390/ijms25115605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/12/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
Joint-resident chondrogenic precursor cells have become a significant therapeutic option due to the lack of regenerative capacity in articular cartilage. Progenitor cells are located in the superficial zone of the articular cartilage, producing lubricin/Prg4 to decrease friction of cartilage surfaces during joint movement. Prg4-positive progenitors are crucial in maintaining the joint's structure and functionality. The disappearance of progenitor cells leads to changes in articular hyaline cartilage over time, subchondral bone abnormalities, and the formation of ectopic ossification. Genetic labeling cell technology has been the main tool used to characterize Prg4-expressing progenitor cells of articular cartilage in vivo through drug injection at different time points. This technology allows for the determination of the origin of progenitor cells and the tracking of their progeny during joint development and cartilage damage. We endeavored to highlight the currently known information about the Prg4-producing cell population in the joint to underline the significance of the role of these cells in the development of articular cartilage and its homeostasis. This review focuses on superficial progenitors in the joint, how they contribute to postnatal articular cartilage formation, their capacity for regeneration, and the consequences of Prg4 deficiency in these cells. We have accumulated information about the Prg4+ cell population of articular cartilage obtained through various elegantly designed experiments using transgenic technologies to identify potential opportunities for further research.
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Affiliation(s)
- Nadezda Ignatyeva
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119048, Russia; (N.G.); (P.S.T.); (E.V.M.)
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Zhang L, Wang X, Xia G, Huang J, Wen Z, Liang C, Cao X, Zhou Y, Wu S. YAP maintains cartilage stem/progenitor cell homeostasis in osteoarthritis. J Orthop Translat 2024; 46:79-90. [PMID: 38817242 PMCID: PMC11137389 DOI: 10.1016/j.jot.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 02/28/2024] [Accepted: 03/03/2024] [Indexed: 06/01/2024] Open
Abstract
Background The cartilage stem/progenitor cells (CSPC) play a critical role in maintaining cartilage homeostasis. However, the effects of phenotypic fluctuations of CSPC on cartilage degeneration and the role of CSPC in the pathogenesis of OA is largely unknown. Methods The cartilage samples of 3 non-OA and 10 OA patients were collected. Human CSPC (hCSPC) derived from these patients were isolated, identified, and evaluated for cellular functions. Additionally, chondrocytes derived from OA patients were isolated. The effect of Yes-associated protein (YAP) expression on hCSPC was investigated in vitro. The OA rat model was established by Hulth's method. Lentivirus-mediated YAP (Lv-YAP) or lentivirus-mediated YAP RNAi (Lv-YAP-RNAi) was injected intra-articularly to modulate YAP expression in rat joints. In addition, allogeneic rat CSPC (rCSPC) overexpressing or silencing YAP were transplanted by intra-articularly injection. We also evaluated the functions of rCSPC and the OA-related cartilage phenotype in the rat model. Finally, the transcriptome of OA rCSPC overexpressing YAP was examined to explore the potential downstream targets of YAP in rCSPC. Results hCSPC derived from OA patients exhibited differential chondrogenesis capacity. Among them, a subset of hCSPC showed pronounced dysfunction, including impaired chondrogenic differentiation, inhibition of proliferation and migration, and downregulation of lubricin. Additionally, YAP was lowly expressed in quiescent non-OA hCSPC, upregulated in activated OA hCSPC, but significantly downregulated in dysfunctional OA hCSPC. Notably, the overexpression of YAP in OA hCSPC improved the proliferation, lubricin production, cell migration, and senescence, while silencing YAP had the opposite effect. In vivo, upregulation of YAP in the joint delayed OA progression and improved the cartilage regeneration capacity of rCSPC. Using transcriptomic analysis, we found that YAP may regulate rCSPC function by upregulating Baculoviral IAP repeat-containing 2 (BIRC2). Importantly, the knockdown of BIRC2 partly blocked the regulation of YAP on the CSPC function. Conclusion Dysfunction of CSPC compromises the intrinsic repair capacity of cartilage and impairs cartilage homeostasis in OA. Notably, the transcriptional co-activator YAP plays a critical role in maintaining CSPC function through potential target gene BIRC2. The Translational Potential of this Article In this study, we observed targeting the YAP-BIRC2 axis improved the CSPC function and restored the cartilage homeostasis in OA. This study provides a potential stem cell-modifying OA therapy.
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Affiliation(s)
- Lina Zhang
- Department of Orthopaedics, Hunan Provincial People's Hospital, Hunan Normal University, Changsha, 410005, China
| | - Xinxing Wang
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Guang Xia
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Junjie Huang
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Zi Wen
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Chi Liang
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Xu Cao
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Yong Zhou
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Song Wu
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
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Zhou H, Zhang Z, Mu Y, Yao H, Zhang Y, Wang DA. Harnessing Nanomedicine for Cartilage Repair: Design Considerations and Recent Advances in Biomaterials. ACS NANO 2024; 18:10667-10687. [PMID: 38592060 DOI: 10.1021/acsnano.4c00780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Cartilage injuries are escalating worldwide, particularly in aging society. Given its limited self-healing ability, the repair and regeneration of damaged articular cartilage remain formidable challenges. To address this issue, nanomaterials are leveraged to achieve desirable repair outcomes by enhancing mechanical properties, optimizing drug loading and bioavailability, enabling site-specific and targeted delivery, and orchestrating cell activities at the nanoscale. This review presents a comprehensive survey of recent research in nanomedicine for cartilage repair, with a primary focus on biomaterial design considerations and recent advances. The review commences with an introductory overview of the intricate cartilage microenvironment and further delves into key biomaterial design parameters crucial for treating cartilage damage, including microstructure, surface charge, and active targeting. The focal point of this review lies in recent advances in nano drug delivery systems and nanotechnology-enabled 3D matrices for cartilage repair. We discuss the compositions and properties of these nanomaterials and elucidate how these materials impact the regeneration of damaged cartilage. This review underscores the pivotal role of nanotechnology in improving the efficacy of biomaterials utilized for the treatment of cartilage damage.
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Affiliation(s)
- Huiqun Zhou
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Zhen Zhang
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Yulei Mu
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Hang Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Yi Zhang
- School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Dong-An Wang
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
- Center for Neuromusculoskeletal Restorative Medicine, InnoHK, HKSTP, Sha Tin, Hong Kong SAR 999077, China
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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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Zhang C, Wang H, Hong SH, Olmer M, Swahn H, Lotz MK, Maye P, Rowe D, Shin DG. vSPACE: Exploring Virtual Spatial Representation of Articular Chondrocytes at the Single-Cell Level. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.07.577817. [PMID: 38370845 PMCID: PMC10871300 DOI: 10.1101/2024.02.07.577817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Single cell RNA sequencing technology has been dramatically changing how gene expression studies are performed. However, its use has been limited to identifying subtypes of cells by comparing cells' gene expression levels in an unbiased manner to produce a 2D plot (e.g., UMAP/tSNE). We developed a new method of placing cells in 2D space. This system, called vSPACE, shows a virtual spatial representation of scRNAseq data obtained from human articular cartilage by emulating the concept of spatial transcriptomics technology, but virtually. This virtual 2D plot presentation of human articular cartage cells generates several zonal distribution patterns, in one or multiple genes at a time, reveling patterns that scientists can appreciate as imputed spatial distribution patterns along the zonal axis. The discovered patterns are explainable and remarkably consistent across all six healthy doners despite their respectively different clinical variables (age and sex), suggesting the confidence of the discovered patterns.
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Gonzalez-Nolde S, Schweiger CJ, Davis EER, Manzoni TJ, Hussein SMI, Schmidt TA, Cone SG, Jay GD, Parreno J. The Actin Cytoskeleton as a Regulator of Proteoglycan 4. Cartilage 2024:19476035231223455. [PMID: 38183234 DOI: 10.1177/19476035231223455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2024] Open
Abstract
OBJECTIVE The superficial zone (SZ) of articular cartilage is responsible for distributing shear forces for optimal cartilage loading and contributes to joint lubrication through the production of proteoglycan 4 (PRG4). PRG4 plays a critical role in joint homeostasis and is chondroprotective. Normal PRG4 production is affected by inflammation and irregular mechanical loading in post-traumatic osteoarthritis (PTOA). THe SZ chondrocyte (SZC) phenotype, including PRG4 expression, is regulated by the actin cytoskeleton in vitro. There remains a limited understanding of the regulation of PRG4 by the actin cytoskeleton in native articular chondrocytes. The filamentous (F)-actin cytoskeleton is a potential node in crosstalk between mechanical stimulation and cytokine activation and the regulation of PRG4 in SZCs, therefore developing insights in the regulation of PRG4 by actin may identify molecular targets for novel PTOA therapies. MATERIALS AND METHODS A comprehensive literature search on PRG4 and the regulation of the SZC phenotype by actin organization was performed. RESULTS PRG4 is strongly regulated by the actin cytoskeleton in isolated SZCs in vitro. Biochemical and mechanical stimuli have been characterized to regulate PRG4 and may converge upon actin cytoskeleton signaling. CONCLUSION Actin-based regulation of PRG4 in native SZCs is not fully understood and requires further elucidation. Understanding the regulation of PRG4 by actin in SZCs requires an in vivo context to further potential of leveraging actin arrangement to arthritic therapeutics.
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Baldwin M, Buckley CD, Guilak F, Hulley P, Cribbs AP, Snelling S. A roadmap for delivering a human musculoskeletal cell atlas. Nat Rev Rheumatol 2023; 19:738-752. [PMID: 37798481 DOI: 10.1038/s41584-023-01031-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2023] [Indexed: 10/07/2023]
Abstract
Advances in single-cell technologies have transformed the ability to identify the individual cell types present within tissues and organs. The musculoskeletal bionetwork, part of the wider Human Cell Atlas project, aims to create a detailed map of the healthy musculoskeletal system at a single-cell resolution throughout tissue development and across the human lifespan, with complementary generation of data from diseased tissues. Given the prevalence of musculoskeletal disorders, this detailed reference dataset will be critical to understanding normal musculoskeletal function in growth, homeostasis and ageing. The endeavour will also help to identify the cellular basis for disease and lay the foundations for novel therapeutic approaches to treating diseases of the joints, soft tissues and bone. Here, we present a Roadmap delineating the critical steps required to construct the first draft of a human musculoskeletal cell atlas. We describe the key challenges involved in mapping the extracellular matrix-rich, but cell-poor, tissues of the musculoskeletal system, outline early milestones that have been achieved and describe the vision and directions for a comprehensive musculoskeletal cell atlas. By embracing cutting-edge technologies, integrating diverse datasets and fostering international collaborations, this endeavour has the potential to drive transformative changes in musculoskeletal medicine.
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Affiliation(s)
- Mathew Baldwin
- The Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK
| | - Christopher D Buckley
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA
- Shriners Hospitals for Children, St. Louis, MO, USA
| | - Philippa Hulley
- The Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK
| | - Adam P Cribbs
- The Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK
| | - Sarah Snelling
- The Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK.
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Yu L, Cavelier S, Hannon B, Wei M. Recent development in multizonal scaffolds for osteochondral regeneration. Bioact Mater 2023; 25:122-159. [PMID: 36817819 PMCID: PMC9931622 DOI: 10.1016/j.bioactmat.2023.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/30/2022] [Accepted: 01/14/2023] [Indexed: 02/05/2023] Open
Abstract
Osteochondral (OC) repair is an extremely challenging topic due to the complex biphasic structure and poor intrinsic regenerative capability of natural osteochondral tissue. In contrast to the current surgical approaches which yield only short-term relief of symptoms, tissue engineering strategy has been shown more promising outcomes in treating OC defects since its emergence in the 1990s. In particular, the use of multizonal scaffolds (MZSs) that mimic the gradient transitions, from cartilage surface to the subchondral bone with either continuous or discontinuous compositions, structures, and properties of natural OC tissue, has been gaining momentum in recent years. Scrutinizing the latest developments in the field, this review offers a comprehensive summary of recent advances, current hurdles, and future perspectives of OC repair, particularly the use of MZSs including bilayered, trilayered, multilayered, and gradient scaffolds, by bringing together onerous demands of architecture designs, material selections, manufacturing techniques as well as the choices of growth factors and cells, each of which possesses its unique challenges and opportunities.
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Affiliation(s)
- Le Yu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, 45701, USA
| | - Sacha Cavelier
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, 45701, USA
| | - Brett Hannon
- Biomedical Engineering Program, Ohio University, Athens, OH, 45701, USA
| | - Mei Wei
- Biomedical Engineering Program, Ohio University, Athens, OH, 45701, USA
- Department of Mechanical Engineering, Ohio University, Athens, OH, 45701, USA
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McNeill K, Reyes N, Choe S, Peterson D, Bryant D, Sonnadara RR. A History of Musculoskeletal Medicine and Its Place and Progress in Undergraduate Medical Education. MEDICAL SCIENCE EDUCATOR 2023; 33:777-790. [PMID: 37501799 PMCID: PMC10368607 DOI: 10.1007/s40670-023-01782-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/23/2023] [Indexed: 07/29/2023]
Abstract
Musculoskeletal diseases are responsible for some of the most prevalent conditions affecting population health in the world. Despite the prevalence of these conditions, musculoskeletal medicine has a fraught history within the world of undergraduate medical education. We review the origins of musculoskeletal medicine, its evolution in undergraduate medical education, and progress that has been made over the last decade as a result of global initiatives such as the Bone and Joint Decade. Understanding the history of musculoskeletal medicine is essential to contextualizing the problems that exist today and creating comprehensive solutions to fill the gaps that persist in musculoskeletal curricula.
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Affiliation(s)
- Kestrel McNeill
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
| | - Natasha Reyes
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
| | - Stella Choe
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
| | - Devin Peterson
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
| | - Dianne Bryant
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
- Department of Surgery, Western University, 1151 Richmond St, London, ON N6A 3K7 Canada
| | - Ranil R. Sonnadara
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada
- Department of Surgery, University of Toronto, 27 King’s College Cir, Toronto, ON M5S 1A1 Canada
- Compute Ontario, Toronto, ON Canada
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12
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Zhang C, Wang G, Lin H, Shang Y, Liu N, Zhen Y, An Y. Cartilage 3D bioprinting for rhinoplasty using adipose-derived stem cells as seed cells: Review and recent advances. Cell Prolif 2023; 56:e13417. [PMID: 36775884 PMCID: PMC10068946 DOI: 10.1111/cpr.13417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 01/10/2023] [Accepted: 01/18/2023] [Indexed: 02/14/2023] Open
Abstract
Nasal deformities due to various causes affect the aesthetics and use of the nose, in which case rhinoplasty is necessary. However, the lack of cartilage for grafting has been a major problem and tissue engineering seems to be a promising solution. 3D bioprinting has become one of the most advanced tissue engineering methods. To construct ideal cartilage, bio-ink, seed cells, growth factors and other methods to promote chondrogenesis should be considered and weighed carefully. With continuous progress in the field, bio-ink choices are becoming increasingly abundant, from a single hydrogel to a combination of hydrogels with various characteristics, and more 3D bioprinting methods are also emerging. Adipose-derived stem cells (ADSCs) have become one of the most popular seed cells in cartilage 3D bioprinting, owing to their abundance, excellent proliferative potential, minimal morbidity during harvest and lack of ethical considerations limitations. In addition, the co-culture of ADSCs and chondrocytes is commonly used to achieve better chondrogenesis. To promote chondrogenic differentiation of ADSCs and construct ideal highly bionic tissue-engineered cartilage, researchers have used a variety of methods, including adding appropriate growth factors, applying biomechanical stimuli and reducing oxygen tension. According to the process and sequence of cartilage 3D bioprinting, this review summarizes and discusses the selection of hydrogel and seed cells (centered on ADSCs), the design of printing, and methods for inducing the chondrogenesis of ADSCs.
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Affiliation(s)
- Chong Zhang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Guanhuier Wang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Hongying Lin
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Yujia Shang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China.,Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Na Liu
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China.,Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Yonghuan Zhen
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Yang An
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
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13
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Dehghan-Baniani D, Mehrjou B, Chu PK, Lee WYW, Wu H. Recent Advances in "Functional Engineering of Articular Cartilage Zones by Polymeric Biomaterials Mediated with Physical, Mechanical, and Biological/Chemical Cues". Adv Healthc Mater 2022; 12:e2202581. [PMID: 36571465 DOI: 10.1002/adhm.202202581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/19/2022] [Indexed: 12/27/2022]
Abstract
Articular cartilage (AC) plays an unquestionable role in joint movements but unfortunately the healing capacity is restricted due to its avascular and acellular nature. While cartilage tissue engineering has been lifesaving, it is very challenging to remodel the complex cartilage composition and architecture with gradient physio-mechanical properties vital to proper tissue functions. To address these issues, a better understanding of the intrinsic AC properties and how cells respond to stimuli from the external microenvironment must be better understood. This is essential in order to take one step closer to producing functional cartilaginous constructs for clinical use. Recently, biopolymers have aroused much attention due to their versatility, processability, and flexibility because the properties can be tailored to match the requirements of AC. This review highlights polymeric scaffolds developed in the past decade for reconstruction of zonal AC layers including the superficial zone, middle zone, and deep zone by means of exogenous stimuli such as physical, mechanical, and biological/chemical signals. The mimicked properties are reviewed in terms of the biochemical composition and organization, cell fate (morphology, orientation, and differentiation), as well as mechanical properties and finally, the challenges and potential ways to tackle them are discussed.
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Affiliation(s)
- Dorsa Dehghan-Baniani
- Department of Chemical and Biological Engineering Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.,Musculoskeletal Research Laboratory, SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Babak Mehrjou
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Wayne Yuk Wai Lee
- Musculoskeletal Research Laboratory, SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China.,Joint Scoliosis Research Centre of the Chinese University of Hong Kong and Nanjing University, The Chinese University of Hong Kong, Hong Kong SAR, China.,Center for Neuromusculoskeletal Restorative Medicine, CUHK InnoHK Centres, Hong Kong Science Park, Hong Kong SAR, China
| | - Hongkai Wu
- Department of Chemical and Biological Engineering Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.,Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong SAR, China
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14
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Kawata M, Teramura T, Ordoukhanian P, Head SR, Natarajan P, Sundaresan A, Olmer M, Asahara H, Lotz MK. Krüppel-like factor-4 and Krüppel-like factor-2 are important regulators of joint tissue cells and protect against tissue destruction and inflammation in osteoarthritis. Ann Rheum Dis 2022; 81:annrheumdis-2021-221867. [PMID: 35534137 PMCID: PMC9643672 DOI: 10.1136/annrheumdis-2021-221867] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/24/2022] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Analysing expression patterns of Krüppel-like factor (KLF) transcription factors in normal and osteoarthritis (OA) human cartilage, and determining functions and mechanisms of KLF4 and KLF2 in joint homoeostasis and OA pathogenesis. METHODS Experimental approaches included human joint tissues cells, transgenic mice and mouse OA model with viral KLF4 gene delivery to demonstrate therapeutic benefit in structure and pain improvement. Mechanistic studies applied global gene expression analysis and chromatin immunoprecipitation sequencing (ChIP-seq). RESULTS Several KLF genes were significantly decreased in OA cartilage. Among them, KLF4 and KLF2 were strong inducers of cartilage collagen genes and Proteoglycan-4. Cartilage-specific deletion of Klf2 in mature mice aggravated severity of experimental OA. Transduction of human chondrocytes with Adenovirus (Ad) expressing KLF4 or KLF2 enhanced expression of major cartilage extracellular matrix (ECM) genes and SRY-box transcription factor-9, and suppressed mediators of inflammation and ECM-degrading enzymes. Ad-KLF4 and Ad-KLF2 enhanced similar protective functions in meniscus cells and synoviocytes, and promoted chondrocytic differentiation of human mesenchymal stem cells. Viral KLF4 delivery into mouse knees reduced severity of OA-associated changes in cartilage, meniscus and synovium, and improved pain behaviours. ChIP-seq analysis suggested that KLF4 directly bound cartilage signature genes. Ras-related protein-1 signalling was the most enriched pathway in KLF4-transduced cells, and its signalling axis was involved in upregulating cartilage ECM genes by KLF4 and KLF2. CONCLUSIONS KLF4 and KLF2 may be central transcription factors that increase protective and regenerative functions in joint tissue cells, suggesting that KLF gene transfer or molecules upregulating KLFs are therapeutic candidates for OA.
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Affiliation(s)
- Manabu Kawata
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
| | - Takeshi Teramura
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kindai University, Osaka-Sayama, Osaka, Japan
| | - Philip Ordoukhanian
- Center for Computational Biology & Bioinformatics and Genomics Core, Scripps Research, La Jolla, California, USA
| | - Steven R Head
- Center for Computational Biology & Bioinformatics and Genomics Core, Scripps Research, La Jolla, California, USA
| | - Padmaja Natarajan
- Center for Computational Biology & Bioinformatics and Genomics Core, Scripps Research, La Jolla, California, USA
| | - Aishwarya Sundaresan
- Center for Computational Biology & Bioinformatics and Genomics Core, Scripps Research, La Jolla, California, USA
| | - Merissa Olmer
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
| | - Hiroshi Asahara
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
| | - Martin K Lotz
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
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15
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Dual functions of microRNA-17 in maintaining cartilage homeostasis and protection against osteoarthritis. Nat Commun 2022; 13:2447. [PMID: 35508470 PMCID: PMC9068604 DOI: 10.1038/s41467-022-30119-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 04/14/2022] [Indexed: 12/16/2022] Open
Abstract
Damaged hyaline cartilage has no capacity for self-healing, making osteoarthritis (OA) "difficult-to-treat". Cartilage destruction is central to OA patho-etiology and is mediated by matrix degrading enzymes. Here we report decreased expression of miR-17 in osteoarthritic chondrocytes and its deficiency contributes to OA progression. Supplementation of exogenous miR-17 or its endogenous induction by growth differentiation factor 5, effectively prevented OA by simultaneously targeting pathological catabolic factors including matrix metallopeptidase-3/13 (MMP3/13), aggrecanase-2 (ADAMTS5), and nitric oxide synthase-2 (NOS2). Single-cell RNA sequencing of hyaline cartilage revealed two distinct superficial chondrocyte populations (C1/C2). C1 expressed physiological catabolic factors including MMP2, and C2 carries synovial features, together with C3 in the middle zone. MiR-17 is highly expressed in both superficial and middle chondrocytes under physiological conditions, and maintains the physiological catabolic and anabolic balance potentially by restricting HIF-1α signaling. Together, this study identified dual functions of miR-17 in maintaining cartilage homeostasis and prevention of OA.
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16
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Identifying Novel Osteoarthritis-Associated Genes in Human Cartilage Using a Systematic Meta-Analysis and a Multi-Source Integrated Network. Int J Mol Sci 2022; 23:ijms23084395. [PMID: 35457215 PMCID: PMC9030814 DOI: 10.3390/ijms23084395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 11/16/2022] Open
Abstract
Osteoarthritis, the most common joint disorder, is characterised by deterioration of the articular cartilage. Many studies have identified potential therapeutic targets, yet no effective treatment has been determined. The aim of this study was to identify and rank osteoarthritis-associated genes and micro-RNAs to prioritise those most integral to the disease. A systematic meta-analysis of differentially expressed mRNA and micro-RNAs in human osteoarthritic cartilage was conducted. Ingenuity pathway analysis identified cellular senescence as an enriched pathway, confirmed by a significant overlap (p < 0.01) with cellular senescence drivers (CellAge Database). A co-expression network was built using genes from the meta-analysis as seed nodes and combined with micro-RNA targets and SNP datasets to construct a multi-source information network. This accumulated and connected 1689 genes which were ranked based on node and edge aggregated scores. These bioinformatic analyses were confirmed at the protein level by mass spectrometry of the different zones of human osteoarthritic cartilage (superficial, middle, and deep) compared to normal controls. This analysis, and subsequent experimental confirmation, revealed five novel osteoarthritis-associated proteins (PPIB, ASS1, LHDB, TPI1, and ARPC4-TTLL3). Focusing future studies on these novel targets may lead to new therapies for osteoarthritis.
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17
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Shiromoto Y, Niki Y, Kikuchi T, Yoshihara Y, Oguma T, Nemoto K, Chiba K, Kanaji A, Matsumoto M, Nakamura M. Increased migratory activity and cartilage regeneration by superficial-zone chondrocytes in enzymatically treated cartilage explants. BMC Musculoskelet Disord 2022; 23:256. [PMID: 35296296 PMCID: PMC8925221 DOI: 10.1186/s12891-022-05210-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/07/2022] [Indexed: 12/02/2022] Open
Abstract
Background Limited chondrocyte migration and impaired cartilage-to-cartilage healing is a barrier in cartilage regenerative therapy. Collagenase treatment and delivery of a chemotactic agent may play a positive role in chondrocyte repopulation at the site of cartilage damage. This study evaluated chondrocyte migratory activity after enzymatic treatment in cultured cartilage explant. Differential effects of platelet-derived growth factor (PDGF) dimeric isoforms on the migratory activity were investigated to define major chemotactic factors for cartilage. Methods Full-thickness cartilage (4-mm3 blocks) were harvested from porcine femoral condyles and subjected to explant culture. After 15 min or 60 min of actinase and collagenase treatments, chondrocyte migration and infiltration into a 0.5-mm cartilage gap was investigated. Cell morphology and lubricin, keratan sulfate, and chondroitin 4 sulfate expression in superficial- and deep-zone chondrocytes were assessed. The chemotactic activities of PDGF-AA, −AB, and -BB were measured in each zone of chondrocytes, using a modified Boyden chamber assay. The protein and mRNA expression and histological localization of PDGF-β were analyzed by western blot analysis, real-time reverse transcription polymerase chain reaction (RT-PCR), and immunohistochemistry, and results in each cartilage zone were compared. Results Superficial-zone chondrocytes had higher migratory activity than deep-zone chondrocytes and actively bridged the cartilage gap, while metachromatic staining by toluidine blue and immunoreactivities of keratan sulfate and chondroitin 4 sulfate were detected around the cells migrating from the superficial zone. These superficial-zone cells with weak immunoreactivity for lubricin tended to enter the cartilage gap and possessed higher migratory activity, while the deep-zone chondrocytes remained in the lacuna and exhibited less migratory activity. Among PDGF isoforms, PDGF-AB maximized the degree of chemotactic activity of superficial zone chondrocytes. Increased expression of PDGF receptor-β was associated with higher migratory activity of the superficial-zone chondrocytes. Conclusions In enzymatically treated cartilage explant culture, chondrocyte migration and infiltration into the cartilage gap was higher in the superficial zone than in the deep zone. Preferential expression of PDGF receptor-β combined with the PDGF-AB dimeric isoform may explain the increased migratory activity of the superficial-zone chondrocytes. Cells migrating from superficial zone may contribute to cartilage regeneration. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-022-05210-2.
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Affiliation(s)
- Yuichiro Shiromoto
- Department of Orthopedic Surgery, School of Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Department of Orthopedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama, 359-8513, Japan
| | - Yasuo Niki
- Department of Orthopedic Surgery, School of Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Toshiyuki Kikuchi
- Department of Orthopedic Surgery, National Hospital Organization, Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama City, Tokyo, 208-0011, Japan
| | - Yasuo Yoshihara
- Department of Orthopedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama, 359-8513, Japan.,Department of Orthopedic Surgery, National Hospital Organization, Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama City, Tokyo, 208-0011, Japan
| | - Takemi Oguma
- Department of Orthopedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama, 359-8513, Japan
| | - Koichi Nemoto
- Department of Orthopedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama, 359-8513, Japan
| | - Kazuhiro Chiba
- Department of Orthopedic Surgery, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama, 359-8513, Japan
| | - Arihiko Kanaji
- Department of Orthopedic Surgery, School of Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Morio Matsumoto
- Department of Orthopedic Surgery, School of Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Masaya Nakamura
- Department of Orthopedic Surgery, School of Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
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18
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Karlsen TA, Sundaram AYM, Brinchmann JE. Single-Cell RNA Sequencing of In Vitro Expanded Chondrocytes: MSC-Like Cells With No Evidence of Distinct Subsets. Cartilage 2021; 13:774S-784S. [PMID: 31072202 PMCID: PMC8804791 DOI: 10.1177/1947603519847746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To investigate the heterogeneity of in vitro expanded chondrocytes used for autologous chondrocyte implantation. METHODS Human articular chondrocytes were expanded in vitro for 14 days, sorted into 86 single cells using fluorescence-activated cell sorting and subjected to single-cell RNA sequencing. Principal component, Cross R2 hierarchical clustering, and differential gene expression analyses were used for data evaluation. Flow cytometry and single-cell RT-qPCR (reverse transcriptase quantitative polymerase chain reaction) was used to validate the results of the RNA sequencing data Polyclonal chondrocyte populations from the same donor were differentiated in vitro toward the osteogenic and adipogenic lineages. RESULTS There was considerable variation in gene expression between individual cells, but we found no evidence for separate cell subpopulations based on principal component, hierarchical clustering, and differential gene expression analysis. Most of the cells expressed all the markers defining mesenchymal stem cells, and as polyclonal chondrocyte populations from the same donor were shown to differentiate into osteocytes and adipocytes in vitro, these cells formally qualify as mesenchymal stem cells. CONCLUSIONS In vitro expanded chondrocytes consist of one single population of cells with heterogeneity in gene expression between the cells. Dedifferentiated chondrocytes qualify as mesenchymal stem cells as they fulfill all the criteria suggested by the International Society for Cellular Therapy.
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Affiliation(s)
- Tommy A. Karlsen
- Norwegian Center for Stem Cell
Research, Department of Immunology, Oslo University Hospital Rikshospitalet,
Oslo, Norway,Tommy A. Karlsen, Department of
Immunology, Oslo University Hospital Rikshospitalet, PO Box 4950
Nydalen, Oslo 0424, Norway.
| | - Arvind Y. M. Sundaram
- Norwegian Sequencing Centre,
Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Jan E. Brinchmann
- Norwegian Center for Stem Cell
Research, Department of Immunology, Oslo University Hospital Rikshospitalet,
Oslo, Norway,Department of Molecular Medicine,
Faculty of Medicine, University of Oslo, Oslo, Norway
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19
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Singh P, Wang M, Mukherjee P, Lessard SG, Pannellini T, Carballo CB, Rodeo SA, Goldring MB, Otero M. Transcriptomic and epigenomic analyses uncovered Lrrc15 as a contributing factor to cartilage damage in osteoarthritis. Sci Rep 2021; 11:21107. [PMID: 34702854 PMCID: PMC8548547 DOI: 10.1038/s41598-021-00269-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/05/2021] [Indexed: 01/03/2023] Open
Abstract
In osteoarthritis (OA), articular chondrocytes display phenotypic and functional changes associated with epigenomic alterations. These changes contribute to the disease progression, which is characterized by dysregulated reparative processes and abnormal extracellular matrix remodeling leading to cartilage degradation. Recent studies using a murine model of posttraumatic OA highlighted the contribution of changes in DNA hydroxymethylation (5hmC) to OA progression. Here, we integrated transcriptomic and epigenomic analyses in cartilage after induction of OA to show that the structural progression of OA is accompanied by early transcriptomic and pronounced DNA methylation (5mC) changes in chondrocytes. These changes accumulate over time and are associated with recapitulation of developmental processes, including cartilage development, chondrocyte hypertrophy, and ossification. Our integrative analyses also uncovered that Lrrc15 is differentially methylated and expressed in OA cartilage, and that it may contribute to the functional and phenotypic alterations of chondrocytes, likely coordinating stress responses and dysregulated extracellular matrix remodeling.
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Affiliation(s)
- Purva Singh
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA
| | - Mengying Wang
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA.,School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | | | - Samantha G Lessard
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA
| | - Tania Pannellini
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA
| | - Camila B Carballo
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA
| | - Scott A Rodeo
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA.,Weill Cornell Medicine, New York, NY, 10021, USA
| | - Mary B Goldring
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA.,Weill Cornell Medicine, New York, NY, 10021, USA
| | - Miguel Otero
- Hospital for Special Surgery, HSS Research Institute, New York, NY, 10021, USA. .,Weill Cornell Medicine, New York, NY, 10021, USA. .,Hospital for Special Surgery, Orthopedic Soft Tissue Research Program, HSS Research Institute, Room 603, 535 East 70th Street, New York, NY, 10021, USA.
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20
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Camacho P, Behre A, Fainor M, Seims KB, Chow LW. Spatial organization of biochemical cues in 3D-printed scaffolds to guide osteochondral tissue engineering. Biomater Sci 2021; 9:6813-6829. [PMID: 34473149 DOI: 10.1039/d1bm00859e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Functional repair of osteochondral (OC) tissue remains challenging because the transition from bone to cartilage presents gradients in biochemical and physical properties necessary for joint function. Osteochondral regeneration requires strategies that restore the spatial composition and organization found in the native tissue. Several biomaterial approaches have been developed to guide chondrogenic and osteogenic differentiation of human mesenchymal stem cells (hMSCs). These strategies can be combined with 3D printing, which has emerged as a useful tool to produce tunable, continuous scaffolds functionalized with bioactive cues. However, functionalization often includes one or more post-fabrication processing steps, which can lead to unwanted side effects and often produce biomaterials with homogeneously distributed chemistries. To address these challenges, surface functionalization can be achieved in a single step by solvent-cast 3D printing peptide-functionalized polymers. Peptide-poly(caprolactone) (PCL) conjugates were synthesized bearing hyaluronic acid (HA)-binding (HAbind-PCL) or mineralizing (E3-PCL) peptides, which have been shown to promote hMSC chondrogenesis or osteogenesis, respectively. This 3D printing strategy enables unprecedented control of surface peptide presentation and spatial organization within a continuous construct. Scaffolds presenting both cartilage-promoting and bone-promoting peptides had a synergistic effect that enhanced hMSC chondrogenic and osteogenic differentiation in the absence of differentiation factors compared to scaffolds without peptides or only one peptide. Furthermore, multi-peptide organization significantly influenced hMSC response. Scaffolds presenting HAbind and E3 peptides in discrete opposing zones promoted hMSC osteogenic behavior. In contrast, presenting both peptides homogeneously throughout the scaffolds drove hMSC differentiation towards a mixed population of articular and hypertrophic chondrocytes. These significant results indicated that hMSC behavior was driven by dual-peptide presentation and organization. The downstream potential of this platform is the ability to fabricate biomaterials with spatially controlled biochemical cues to guide functional tissue regeneration without the need for differentiation factors.
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Affiliation(s)
- Paula Camacho
- Department of Bioengineering, Lehigh University, Bethlehem, PA, USA
| | - Anne Behre
- Department of Bioengineering, Lehigh University, Bethlehem, PA, USA
| | - Matthew Fainor
- Integrated Degree in Engineering, Arts, and Sciences Program, Lehigh University, Bethlehem, PA, USA
| | - Kelly B Seims
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA, USA.
| | - Lesley W Chow
- Department of Bioengineering, Lehigh University, Bethlehem, PA, USA.,Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA, USA.
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21
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Basudan AM, Aziz MA, Yang Y. Implications of zonal architecture on differential gene expression profiling and altered pathway expressions in mandibular condylar cartilage. Sci Rep 2021; 11:16915. [PMID: 34413358 PMCID: PMC8376865 DOI: 10.1038/s41598-021-96071-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 08/04/2021] [Indexed: 11/09/2022] Open
Abstract
Mandibular condylar cartilage (MCC) is a multi-zonal heterogeneous fibrocartilage containing different types of cells, but the factors/mechanisms governing the phenotypic transition across the zones have not been fully understood. The reliability of molecular studies heavily rely on the procurement of pure cell populations from the heterogeneous tissue. We used a combined laser-capture microdissection and microarray analysis approach which allowed identification of differential zone-specific gene expression profiling and altered pathways in the MCC of 5-week-old rats. The bioinformatics analysis demonstrated that the MCC cells clearly exhibited distinguishable phenotypes from the articular chondrocytes. Additionally, a set of genes has been determined as potential markers to identify each MCC zone individually; Crab1 gene showed the highest enrichment while Clec3a was the most downregulated gene at the superficial layer, which consists of fibrous (FZ) and proliferative zones (PZ). Ingenuity Pathway Analysis revealed numerous altered signaling pathways; Leukocyte extravasation signaling pathway was predicted to be activated at all MCC zones, in particular mature and hypertrophic chondrocytes zones (MZ&HZ), when compared with femoral condylar cartilage (FCC). Whereas Superpathway of Cholesterol Biosynthesis showed predicted activation in both FZ and PZ as compared with deep MCC zones and FCC. Determining novel zone-specific differences of large group of potential genes, upstream regulators and pathways in healthy MCC would improve our understanding of molecular mechanisms on regional (zonal) basis, and provide new insights for future therapeutic strategies.
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Affiliation(s)
- Aisha M Basudan
- Division of Orthodontics, Dental Services Department, KAMC/KAIMRC/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard-Health Affairs (MNGHA), Riyadh, 11426, Saudi Arabia.
| | - Mohammad Azhar Aziz
- King Abdullah International Medical Research Center (KAIMRC)/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Colorectal Cancer Research Program, MNGHA, Riyadh, 11426, Saudi Arabia
| | - Yanqi Yang
- Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong, SAR, China
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22
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Sun Y, Wu Q, Zhang Y, Dai K, Wei Y. 3D-bioprinted gradient-structured scaffold generates anisotropic cartilage with vascularization by pore-size-dependent activation of HIF1α/FAK signaling axis. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 37:102426. [PMID: 34175454 DOI: 10.1016/j.nano.2021.102426] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/06/2021] [Accepted: 06/01/2021] [Indexed: 02/06/2023]
Abstract
Articular cartilage injury is one of the most common diseases in orthopedics, which seriously affects patients' life quality, the development of a biomimetic scaffold that mimics the multi-layered gradient structure of native cartilage is a new cartilage repair strategy. It has been shown that scaffold topography affects cell attachment, proliferation, and differentiation; the underlying molecular mechanism of cell-scaffold interaction is still unclear. In the present study, we construct an anisotropic gradient-structured cartilage scaffold by three-dimensional (3D) bioprinting, in which bone marrow stromal cell (BMSC)-laden anisotropic hydrogels micropatterns were used for heterogeneous chondrogenic differentiation and physically gradient synthetic poly (ε-caprolactone) (PCL) to impart mechanical strength. In vitro and in vivo, we demonstrated that gradient-structured cartilage scaffold displayed better cartilage repair effect. The heterogeneous cartilage tissue maturation and blood vessel ingrowth were mediated by a pore-size-dependent mechanism and HIF1α/FAK axis activation. In summary, our results provided a theoretical basis for employing 3D bioprinting gradient-structured constructs for anisotropic cartilage regeneration and revealed HIF1α/FAK axis as a crucial regulator for cell-material interactions, so as to provide a new perspective for cartilage regeneration and repair.
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Affiliation(s)
- Ye Sun
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, China.
| | - Qiang Wu
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuxin Zhang
- Department of Rehabilitation Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Huangpu District, Shanghai, People's Republic of China
| | - Kerong Dai
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yongzhong Wei
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Jiangsu, China
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23
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Lee KI, Gamini R, Olmer M, Ikuta Y, Hasei J, Baek J, Alvarez-Garcia O, Grogan SP, D'Lima DD, Asahara H, Su AI, Lotz MK. Mohawk is a transcription factor that promotes meniscus cell phenotype and tissue repair and reduces osteoarthritis severity. Sci Transl Med 2021; 12:12/567/eaan7967. [PMID: 33115953 DOI: 10.1126/scitranslmed.aan7967] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 02/06/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022]
Abstract
Meniscus tears are common knee injuries and a major osteoarthritis (OA) risk factor. Knowledge gaps that limit the development of therapies for meniscus injury and degeneration concern transcription factors that control the meniscus cell phenotype. Analysis of RNA sequencing data from 37 human tissues in the Genotype-Tissue Expression database and RNA sequencing data from meniscus and articular cartilage showed that transcription factor Mohawk (MKX) is highly enriched in meniscus. In human meniscus cells, MKX regulates the expression of meniscus marker genes, OA-related genes, and other transcription factors, including Scleraxis (SCX), SRY Box 5 (SOX5), and Runt domain-related transcription factor 2 (RUNX2). In mesenchymal stem cells (MSCs), the combination of adenoviral MKX (Ad-MKX) and transforming growth factor-β3 (TGF-β3) induced a meniscus cell phenotype. When Ad-MKX-transduced MSCs were seeded on TGF-β3-conjugated decellularized meniscus scaffold (DMS) and inserted into experimental tears in meniscus explants, they increased glycosaminoglycan content, extracellular matrix interconnectivity, cell infiltration into the DMS, and improved biomechanical properties. Ad-MKX injection into mouse knee joints with experimental OA induced by surgical destabilization of the meniscus suppressed meniscus and cartilage damage, reducing OA severity. Ad-MKX injection into human OA meniscus tissue explants corrected pathogenic gene expression. These results identify MKX as a previously unidentified key transcription factor that regulates the meniscus cell phenotype. The combination of Ad-MKX with TGF-β3 is effective for differentiation of MSCs to a meniscus cell phenotype and useful for meniscus repair. MKX is a promising therapeutic target for meniscus tissue engineering, repair, and prevention of OA.
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Affiliation(s)
- Kwang Il Lee
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Ramya Gamini
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Merissa Olmer
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Yasunari Ikuta
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Joe Hasei
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Jihye Baek
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA.,Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, CA 92037, USA
| | | | - Shawn P Grogan
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA.,Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, CA 92037, USA
| | - Darryl D D'Lima
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA.,Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, CA 92037, USA
| | - Hiroshi Asahara
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA
| | - Andrew I Su
- Department of Integrative, Structural and Computational Biology, Scripps Research, La Jolla, CA 92037, USA
| | - Martin K Lotz
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA.
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24
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Stone RN, Frahs SM, Hardy MJ, Fujimoto A, Pu X, Keller-Peck C, Oxford JT. Decellularized Porcine Cartilage Scaffold; Validation of Decellularization and Evaluation of Biomarkers of Chondrogenesis. Int J Mol Sci 2021; 22:6241. [PMID: 34207917 PMCID: PMC8230108 DOI: 10.3390/ijms22126241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 12/21/2022] Open
Abstract
Osteoarthritis is a major concern in the United States and worldwide. Current non-surgical and surgical approaches alleviate pain but show little evidence of cartilage restoration. Cell-based treatments may hold promise for the regeneration of hyaline cartilage-like tissue at the site of injury or wear. Cell-cell and cell-matrix interactions have been shown to drive cell differentiation pathways. Biomaterials for clinically relevant applications can be generated from decellularized porcine auricular cartilage. This material may represent a suitable scaffold on which to seed and grow chondrocytes to create new cartilage. In this study, we used decellularization techniques to create an extracellular matrix scaffold that supports chondrocyte cell attachment and growth in tissue culture conditions. Results presented here evaluate the decellularization process histologically and molecularly. We identified new and novel biomarker profiles that may aid future cartilage decellularization efforts. Additionally, the resulting scaffold was characterized using scanning electron microscopy, fluorescence microscopy, and proteomics. Cellular response to the decellularized scaffold was evaluated by quantitative real-time PCR for gene expression analysis.
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Affiliation(s)
- Roxanne N. Stone
- Interdisciplinary Studies Program, Boise State University, Boise, ID 83725, USA;
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
| | - Stephanie M. Frahs
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
- Biomolecular Sciences Graduate Programs, Boise State University, Boise, ID 83725, USA
| | - Makenna J. Hardy
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
- Biomolecular Sciences Graduate Programs, Boise State University, Boise, ID 83725, USA
| | - Akina Fujimoto
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
| | - Xinzhu Pu
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
- Biomolecular Sciences Graduate Programs, Boise State University, Boise, ID 83725, USA
| | - Cynthia Keller-Peck
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
| | - Julia Thom Oxford
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA; (S.M.F.); (M.J.H.); (A.F.); (X.P.); (C.K.-P.)
- Center of Biomedical Research Excellence in Matrix Biology, Boise State University, Boise, ID 83725, USA
- Biomolecular Sciences Graduate Programs, Boise State University, Boise, ID 83725, USA
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA
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25
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Fan X, Wu X, Crawford R, Xiao Y, Prasadam I. Macro, Micro, and Molecular. Changes of the Osteochondral Interface in Osteoarthritis Development. Front Cell Dev Biol 2021; 9:659654. [PMID: 34041240 PMCID: PMC8142862 DOI: 10.3389/fcell.2021.659654] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/12/2021] [Indexed: 01/05/2023] Open
Abstract
Osteoarthritis (OA) is a long-term condition that causes joint pain and reduced movement. Notably, the same pathways governing cell growth, death, and differentiation during the growth and development of the body are also common drivers of OA. The osteochondral interface is a vital structure located between hyaline cartilage and subchondral bone. It plays a critical role in maintaining the physical and biological function, conveying joint mechanical stress, maintaining chondral microenvironment, as well as crosstalk and substance exchange through the osteochondral unit. In this review, we summarized the progress in research concerning the area of osteochondral junction, including its pathophysiological changes, molecular interactions, and signaling pathways that are related to the ultrastructure change. Multiple potential treatment options were also discussed in this review. A thorough understanding of these biological changes and molecular mechanisms in the pathologic process will advance our understanding of OA progression, and inform the development of effective therapeutics targeting OA.
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Affiliation(s)
- Xiwei Fan
- Faculty of Science and Engineering, School of Mechanical, Medical and Process Engineering, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Xiaoxin Wu
- Faculty of Science and Engineering, School of Mechanical, Medical and Process Engineering, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Ross Crawford
- Faculty of Science and Engineering, School of Mechanical, Medical and Process Engineering, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,Orthopaedic Department, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Yin Xiao
- Faculty of Science and Engineering, School of Mechanical, Medical and Process Engineering, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, QLD, Australia
| | - Indira Prasadam
- Faculty of Science and Engineering, School of Mechanical, Medical and Process Engineering, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
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26
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Messaoudi O, Henrionnet C, Bourge K, Loeuille D, Gillet P, Pinzano A. Stem Cells and Extrusion 3D Printing for Hyaline Cartilage Engineering. Cells 2020; 10:cells10010002. [PMID: 33374921 PMCID: PMC7821921 DOI: 10.3390/cells10010002] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 02/07/2023] Open
Abstract
Hyaline cartilage is deficient in self-healing properties. The early treatment of focal cartilage lesions is a public health challenge to prevent long-term degradation and the occurrence of osteoarthritis. Cartilage tissue engineering represents a promising alternative to the current insufficient surgical solutions. 3D printing is a thriving technology and offers new possibilities for personalized regenerative medicine. Extrusion-based processes permit the deposition of cell-seeded bioinks, in a layer-by-layer manner, allowing mimicry of the native zonal organization of hyaline cartilage. Mesenchymal stem cells (MSCs) are a promising cell source for cartilage tissue engineering. Originally isolated from bone marrow, they can now be derived from many different cell sources (e.g., synovium, dental pulp, Wharton’s jelly). Their proliferation and differentiation potential are well characterized, and they possess good chondrogenic potential, making them appropriate candidates for cartilage reconstruction. This review summarizes the different sources, origins, and densities of MSCs used in extrusion-based bioprinting (EBB) processes, as alternatives to chondrocytes. The different bioink constituents and their advantages for producing substitutes mimicking healthy hyaline cartilage is also discussed.
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Affiliation(s)
- Océane Messaoudi
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
| | - Christel Henrionnet
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
| | - Kevin Bourge
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
| | - Damien Loeuille
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
- Service de Rhumatologie, CHRU de Nancy, Hôpitaux de Brabois, Bâtiment des Spécialités Médicales, 5 rue du Morvan, F54511 Vandœuvre-Lès-Nancy, France
| | - Pierre Gillet
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
- Laboratoire de Pharmacologie, Toxicologie et Pharmacovigilance, Bâtiment de Biologie Médicale et de Biopathologie, CHRU de Nancy-Brabois, 5 Rue du Morvan, F54511 Vandœuvre-Lès-Nancy, France
| | - Astrid Pinzano
- UMR 7365 CNRS-UL, IMoPA (Ingénierie Moléculaire et Physiopathologie Articulaire), Biopôle de l’Université de Lorraine, Campus Brabois-Santé, 9, Avenue de la Forêt de Haye, BP20199, 54505 Vandœuvre-Lès-Nancy, France; (O.M.); (C.H.); (K.B.); (D.L.); (P.G.)
- Contrat d’Interface, Service de Rhumatologie, Hôpital de Brabois, Bâtiment Spécialités Médicales, F54511 Vandœuvre Lès Nancy, France
- Correspondence: ; Tel.: +33-(0)372-746-565
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27
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Volova LT, Pugachev EI, Rossinskaya VV, Boltovskaya VV, Dolgushkin DA, Ossina N. Rheumatoid Arthritis: Applicability of Ready-to-Use Human Cartilaginous Cells for Screening of Compounds with TNF-Alpha Inhibitory Activity. Biomolecules 2020; 10:biom10111563. [PMID: 33212930 PMCID: PMC7698400 DOI: 10.3390/biom10111563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/29/2020] [Accepted: 11/10/2020] [Indexed: 11/16/2022] Open
Abstract
In the context of modern drug discovery, there is an obvious advantage to designing phenotypic bioassays based on human disease-relevant cells that express disease-relevant markers. The specific aim of the study was to develop a convenient and reliable method for screening compounds with Tumor Necrosis Factor-alpha (TNF-α) inhibitory activity. This assay was developed using cryopreserved ready-to-use cartilage-derived cells isolated from juvenile donors diagnosed with polydactyly. It has been demonstrated that all donor (10 donors) cells were able to respond to TNF-α treatment by increased secretion of pro-inflammatory cytokine IL-6 into subcultural medium. Inhibition of TNF-α using commercially available TNF-α inhibitor etanercept resulted in a dose-dependent decrease in IL-6 production which was measured by Enzyme-Linked Immunosorbent Assay (ELISA). TNF-α dependent IL-6 production was detected in the cells after both their prolonged cultivation in vitro (≥20 passages) and cryopreservation. This phenotypic bioassay based on ready-to-use primary human cells was developed for detection of novel TNF-α inhibitory compounds and profiling of biosimilar drugs.
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28
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Walsh SK, Shelley JC, Henak CR. Mechanobiology of Cartilage Impact Via Real-Time Metabolic Imaging. J Biomech Eng 2020; 142:100802. [PMID: 32542333 DOI: 10.1115/1.4047534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Indexed: 11/08/2022]
Abstract
Cartilage loading is important in both structural and biological contexts, with overloading known to cause osteoarthritis (OA). Cellular metabolism, which can be evaluated through the relative measures of glycolysis and oxidative phosphorylation, is important in disease processes across tissues. Details of structural damage coupled with cellular metabolism in cartilage have not been evaluated. Therefore, the aim of this study was to characterize the time- and location-dependent metabolic response to traumatic impact loading in articular cartilage. Cartilage samples from porcine femoral condyles underwent a single traumatic injury that created cracks in most samples. Before and up to 30 min after loading, samples underwent optical metabolic imaging. Optical metabolic imaging measures the fluorescent intensity of byproducts of the two metabolic pathways, flavin adenine dinucleotide for oxidative phosphorylation and nicotinamide adenine dinucleotide ± phosphate for glycolysis, as well as the redox ratio between them. Images were taken at varied distances from the center of the impact. Shortly after impact, fluorescence intensity in both channels decreased, while redox ratio was unchanged. The most dramatic metabolic response was measured closest to the impact center, with suppressed fluorescence in both channels relative to baseline. Redox ratio varied nonlinearly as a function of distance from the impact. Finally, both lower and higher magnitude loading reduced flavin adenine dinucleotide fluorescence, whereas reduced nicotinamide adenine dinucleotide ± phosphate fluorescence was associated only with low strain loads and high contact pressure loads, respectively. In conclusion, this study performed novel analysis of metabolic activity following induction of cartilage damage and demonstrated time-, distance-, and load-dependent response to traumatic impact loading.
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Affiliation(s)
- Shannon K Walsh
- Comparative Biomedical Sciences Program, University of Wisconsin-Madison, Madison, WI 53706
| | - Joshua C Shelley
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706
| | - Corinne R Henak
- Department of Mechanical Engineering, University of Wisconsin-Madison, 3031 Mechanical Engineering Building, 1513 University Ave. Madison, WI 53706; Department of Biomedical Engineering, University of Wisconsin-Madison, 3031 Mechanical Engineering Building, 1513 University Ave. Madison, WI 53706; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 3031 Mechanical Engineering Building, 1513 University Ave. Madison, WI 53705
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29
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Sun Y, You Y, Jiang W, Wang B, Wu Q, Dai K. 3D bioprinting dual-factor releasing and gradient-structured constructs ready to implant for anisotropic cartilage regeneration. SCIENCE ADVANCES 2020; 6:eaay1422. [PMID: 32917692 PMCID: PMC11206535 DOI: 10.1126/sciadv.aay1422] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Cartilage injury is extremely common and leads to joint dysfunction. Existing joint prostheses do not remodel with host joint tissue. However, developing large-scale biomimetic anisotropic constructs mimicking native cartilage with structural integrity is challenging. In the present study, we describe anisotropic cartilage regeneration by three-dimensional (3D) bioprinting dual-factor releasing and gradient-structured constructs. Dual-factor releasing mesenchymal stem cell (MSC)-laden hydrogels were used for anisotropic chondrogenic differentiation. Together with physically gradient synthetic biodegradable polymers that impart mechanical strength, the 3D bioprinted anisotropic cartilage constructs demonstrated whole-layer integrity, lubrication of superficial layers, and nutrient supply in deep layers. Evaluation of the cartilage tissue in vitro and in vivo showed tissue maturation and organization that may be sufficient for translation to patients. In conclusion, one-step 3D bioprinted dual-factor releasing and gradient-structured constructs were generated for anisotropic cartilage regeneration, integrating the feasibility of MSC- and 3D bioprinting-based therapy for injured or degenerative joints.
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Affiliation(s)
- Ye Sun
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Jiangsu 210029, China.
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yongqing You
- Department of Nephrology, Affiliated Hospital of Nanjing Medical University, North District of Suzhou Municipal Hospital, Suzhou, China.
| | - Wenbo Jiang
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Bo Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Qiang Wu
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Kerong Dai
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
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30
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Kurenkova AD, Medvedeva EV, Newton PT, Chagin AS. Niches for Skeletal Stem Cells of Mesenchymal Origin. Front Cell Dev Biol 2020; 8:592. [PMID: 32754592 PMCID: PMC7366157 DOI: 10.3389/fcell.2020.00592] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 06/17/2020] [Indexed: 12/16/2022] Open
Abstract
With very few exceptions, all adult tissues in mammals are maintained and can be renewed by stem cells that self-renew and generate the committed progeny required. These functions are regulated by a specific and in many ways unique microenvironment in stem cell niches. In most cases disruption of an adult stem cell niche leads to depletion of stem cells, followed by impairment of the ability of the tissue in question to maintain its functions. The presence of stem cells, often referred to as mesenchymal stem cells (MSCs) or multipotent bone marrow stromal cells (BMSCs), in the adult skeleton has long been realized. In recent years there has been exceptional progress in identifying and characterizing BMSCs in terms of their capacity to generate specific types of skeletal cells in vivo. Such BMSCs are often referred to as skeletal stem cells (SSCs) or skeletal stem and progenitor cells (SSPCs), with the latter term being used throughout this review. SSPCs have been detected in the bone marrow, periosteum, and growth plate and characterized in vivo on the basis of various genetic markers (i.e., Nestin, Leptin receptor, Gremlin1, Cathepsin-K, etc.). However, the niches in which these cells reside have received less attention. Here, we summarize the current scientific literature on stem cell niches for the SSPCs identified so far and discuss potential factors and environmental cues of importance in these niches in vivo. In this context we focus on (i) articular cartilage, (ii) growth plate cartilage, (iii) periosteum, (iv) the adult endosteal compartment, and (v) the developing endosteal compartment, in that order.
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Affiliation(s)
- Anastasiia D Kurenkova
- Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Ekaterina V Medvedeva
- Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Phillip T Newton
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Andrei S Chagin
- Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.,Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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Neves SC, Moroni L, Barrias CC, Granja PL. Leveling Up Hydrogels: Hybrid Systems in Tissue Engineering. Trends Biotechnol 2020; 38:292-315. [DOI: 10.1016/j.tibtech.2019.09.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 12/11/2022]
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Huynh RN, Pesante B, Nehmetallah G, Raub CB. Polarized reflectance from articular cartilage depends upon superficial zone collagen network microstructure. BIOMEDICAL OPTICS EXPRESS 2019; 10:5518-5534. [PMID: 31799028 PMCID: PMC6865123 DOI: 10.1364/boe.10.005518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 05/02/2023]
Abstract
Polarized reflectance from articular cartilage involves light scattering dependent on surface features, sub-surface optical properties, and collagen birefringence. To understand how surface roughness, zonal collagen microstructure, and chondrocyte organization contribute to polarized reflectance signals, experiments were conducted on bovine cartilage explants and osteochondral cores to compare polarized reflectance texture with split lines and relate these signals to cartilage zonal features and chondrocyte distribution. Texture parameter sensitivity to articular surface damage was determined from polarized reflectance maps and optimized to detect surface damage. Results indicate that polarized reflectance texture predominantly derives from the superficial zone collagen network, while the parameter average value also depends on surface roughness and total cartilage thickness.
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Affiliation(s)
- R. N. Huynh
- Department of Biomedical Engineering, The Catholic University of America, 620 Michigan Ave NE., Washington, DC 20064, USA
| | - B. Pesante
- Department of Biomedical Engineering, The Catholic University of America, 620 Michigan Ave NE., Washington, DC 20064, USA
| | - G. Nehmetallah
- Department of Electrical Engineering and Computer Science, The Catholic University of America, 620 Michigan Ave NE., Washington, DC 20064, USA
| | - C. B. Raub
- Department of Biomedical Engineering, The Catholic University of America, 620 Michigan Ave NE., Washington, DC 20064, USA
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33
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Challenges for Natural Hydrogels in Tissue Engineering. Gels 2019; 5:gels5020030. [PMID: 31146448 PMCID: PMC6631000 DOI: 10.3390/gels5020030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/20/2019] [Accepted: 05/24/2019] [Indexed: 12/11/2022] Open
Abstract
Protein-based biopolymers derived from natural tissues possess a hierarchical structure in their native state. Strongly solvating, reducing and stabilizing agents, as well as heat, pressure, and enzymes are used to isolate protein-based biopolymers from their natural tissue, solubilize them in aqueous solution and convert them into injectable or preformed hydrogels for applications in tissue engineering and regenerative medicine. This review aims to highlight the need to investigate the nano-/micro-structure of hydrogels derived from the extracellular matrix proteins of natural tissues. Future work should focus on identifying the nature of secondary, tertiary, and higher order structure formation in protein-based hydrogels derived from natural tissues, quantifying their composition, and characterizing their binding pockets with cell surface receptors. These advances promise to lead to wide-spread use of protein-based hydrogels derived from natural tissues as injectable or preformed matrices for cell delivery in tissue engineering and regenerative medicine.
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Chen Y, Huang LF, Zhu JX. Dose-related histopathology and bone remodeling characteristics of the knee articular cartilage and subchondral bone induced by glucocorticoids in rats. Exp Ther Med 2019; 17:4492-4498. [PMID: 31105787 PMCID: PMC6507510 DOI: 10.3892/etm.2019.7508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 11/14/2018] [Indexed: 11/23/2022] Open
Abstract
The aim of the current study was to investigate histopathological changes and bone remodeling in the knee articular cartilage and subchondral bone in rats following treatment with glucocorticoids. A total of 30 3-month-old female Sprague-Dawley rats were randomly divided into either a vehicle control group or one of three experimental groups wherein dexamethasone (Dex) was administered at a dose of 1.0, 2.5 or 5.0 mg/kg (Dex1.0, Dex2.5 and Dex5.0, respectively), for 8 weeks. Articular cartilage and the epiphyseal subchondral bone of the proximal tibias were evaluated by histopathology or for bone remodeling using histomorphometry. No histological changes were identified in the knee articular cartilage but the bone formation rate of the subchondral bone was lower in the Dex1.0 group compared with that of the control group. Compared with the control and the Dex1.0 group, the width of the articular cartilage and the subchondral plate were larger, with abnormal morphology and increased apoptosis of chondrocytes, decreased cell/matrix volume ratio in the cartilage and fewer blood vessels in the subchondral plate in the Dex2.5 and Dex5.0 groups. A higher Dex dose resulted in more severe inhibition of bone formation, a greater number of apoptotic osteocytes and constrained bone resorption. All microstructure parameters indicated no significant changes in the Dex2.5 group but exhibited deterioration in the Dex5.0 group compared with the normal and Dex1.0 group. There were no significant differences in morphological changes, or in static and dynamic bone indices between the Dex2.5 and Dex5.0 groups. In conclusion, long-term glucocorticoid use induced dose-related histopathological changes in the knee articular cartilage, along with unbalanced bone remodeling and osteopenia in the subchondral bone. The degree of damage to the articular cartilage was milder and transformed from compensation to degeneration at higher doses.
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Affiliation(s)
- Yan Chen
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Lian-Fang Huang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Jue-Xin Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
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Tanaka N, Tashiro T, Katsuragawa Y, Sawabe M, Furukawa H, Fukui N. Expression of minor cartilage collagens and small leucine rich proteoglycans may be relatively reduced in osteoarthritic cartilage. BMC Musculoskelet Disord 2019; 20:232. [PMID: 31103042 PMCID: PMC6525975 DOI: 10.1186/s12891-019-2596-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/29/2019] [Indexed: 11/12/2022] Open
Abstract
Background In osteoarthritis (OA), cartilage matrix is lost despite vigorous chondrocyte anabolism. In this study, we attempted to determine whether altered matrix synthesis is involved in this paradox in disease progression through gene expression analysis and ultrastructural analysis of collagen fibrils within the cartilage matrix. Methods Cartilage tissues were obtained from 29 end-stage OA knees and 11 control knees. First, cDNA microarray analysis was performed and the expression of 9 genes involved in collagen fibrillogenesis was compared between OA and control cartilages. Then their expression was investigated in further detail by a quantitative polymerase chain reaction (qPCR) analysis combined with laser capture microdissection. Finally, collagen fibril formation was compared between OA and control cartilage by transmission electron microscopy. Results The result of the microarray analysis suggested that the expression of type IX and type XI collagens and fibrillogenesis-related small leucine-rich proteoglycans (SLRPs) may be reduced in OA cartilage relative to the type II collagen expression. The qPCR analysis confirmed these results and further indicated that the relative reduction in the minor collagen and SLRP expression may be more obvious in degenerated areas of OA cartilage. An ultrastructural analysis suggested that thicker collagen fibrils may be formed by OA chondrocytes possibly through reduction in the minor collagen and SLRP expression. Conclusions This may be the first study to report the possibility of altered collagen fibrillogenesis in OA cartilage. Disturbance in collagen fibril formation may be a previously unidentified mechanism underlying the loss of cartilage matrix in OA. Electronic supplementary material The online version of this article (10.1186/s12891-019-2596-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nobuho Tanaka
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, 18-1 Sakuradai, Sagamihara, Kanagawa, 252-0315, Japan
| | - Toshiyuki Tashiro
- Department of Orthopaedic Surgery, Tokyo Yamate Medical Center, 3-22-1 Hyakuninncyou, Shinjyuku-ku, Tokyo, 169-0073, Japan
| | - Yozo Katsuragawa
- Department of Orthopaedic Surgery, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjyuku-ku, Tokyo, 162-8655, Japan
| | - Motoji Sawabe
- Department of Molecular Pathology, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hiroshi Furukawa
- Laboratory for Molecular and Genetic Epidemiology, School of Medicine, The University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Naoshi Fukui
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, 18-1 Sakuradai, Sagamihara, Kanagawa, 252-0315, Japan. .,Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
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36
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Human Diseased Articular Cartilage Contains a Mesenchymal Stem Cell-Like Population of Chondroprogenitors with Strong Immunomodulatory Responses. J Clin Med 2019; 8:jcm8040423. [PMID: 30925656 PMCID: PMC6517884 DOI: 10.3390/jcm8040423] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/21/2019] [Accepted: 03/25/2019] [Indexed: 02/07/2023] Open
Abstract
Background: osteoarthritic human articular cartilage (AC)-derived cartilage cells (CCs) with same-donor bone marrow (BMSCs) and adipose tissue (ASCs)-derived mesenchymal stem cells were compared, in terms of stemness features, and secretory and immunomodulatory responses to inflammation. Methods: proteoglycan 4 (PRG4) presence was evaluated in AC and CCs. MSCs and CCs (n = 8) were cultured (P1 to P4) and characterized for clonogenicity, nanog homeobox (NANOG), and POU class 5 homeobox 1 (POU5F1) expression, immunotypification, and tri-lineage differentiation. Their basal and interleukin-1β (IL-1β)-stimulated expression of matrix metalloproteases (MMPs), tissue inhibitors (TIMPs), release of growth factors, and cytokines were analyzed, along with the immunomodulatory ability of CCs. Results: PRG4 was mainly expressed in the intact AC surface, whereas shifted to the intermediate zone in damaged cartilage and increased its expression in CCs upon culture. All cells exhibited a similar phenotype and stemness maintenance over passages. CCs showed highest chondrogenic ability, no adipogenic potential, a superior basal secretion of growth factors and cytokines, the latter further increased after inflammatory stimulation, and an immunomodulatory behavior. All stimulated cells shared an increased MMP expression without a corresponding TIMP production. Conclusion: based on the observed features, CCs obtained from pathological joints may constitute a potential tissue-specific therapeutic target or agent to improve damaged cartilage healing, especially damage caused by inflammatory/immune mediated conditions.
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Deng ZH, Li YS, Gao X, Lei GH, Huard J. Bone morphogenetic proteins for articular cartilage regeneration. Osteoarthritis Cartilage 2018; 26:1153-1161. [PMID: 29580979 DOI: 10.1016/j.joca.2018.03.007] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/18/2018] [Accepted: 03/19/2018] [Indexed: 02/02/2023]
Abstract
Degeneration of articular cartilage (AC) tissue is the most common cause of osteoarthritis (OA) and rheumatoid arthritis. Bone morphogenetic proteins (BMPs) play important roles in bone and cartilage formation. This article reviews the experimental and clinical applications of BMPs in cartilage regeneration. Experimental evidence indicates that BMPs play an important role in protection against cartilage damage caused by inflammation or trauma, by binding to different receptor combinations and, consequently, activating different intracellular signaling pathways. Loss of function of BMP-related receptors contributes to the decreased intrinsic repair capacity of damaged cartilage and, thus, the multifunctional effects of BMPs make them attractive tools for the treatment of cartilage damage in patients with degenerative diseases. However, the development of BMP therapy as a treatment modality for cartilage regeneration has been hampered by certain factors, such as the eligibility of participants in clinical trials, financial support, drug delivery carrier safety, availabilities of effective scaffolds, appropriate selection of optimal dose and timing of administration, and side effects. Further research is needed to overcome these issues for future routine clinical applications. Research and development leading to the successful application of BMPs can initiate a new era in the treatment of cartilage degenerative diseases like OA.
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Affiliation(s)
- Z H Deng
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China; Department of Orthopaedic Surgery, Center for Tissue Engineering and Aging Research, Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA; Department of Orthopedics, Shenzhen Second People's Hospital (The First Hospital Affiliated to Shenzhen University), Shenzhen, Guangdong Province, China
| | - Y S Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - X Gao
- Department of Orthopaedic Surgery, Center for Tissue Engineering and Aging Research, Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA; The Steadman Philippon Research Institute, Vail, CO, USA
| | - G H Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
| | - J Huard
- Department of Orthopaedic Surgery, Center for Tissue Engineering and Aging Research, Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA; The Steadman Philippon Research Institute, Vail, CO, USA.
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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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Kestilä I, Thevenot J, Finnilä M, Karhula S, Hadjab I, Kauppinen S, Garon M, Quenneville E, Haapea M, Rieppo L, Pritzker K, Buschmann M, Nieminen H, Saarakkala S. In vitro method for 3D morphometry of human articular cartilage chondrons based on micro-computed tomography. Osteoarthritis Cartilage 2018; 26:1118-1126. [PMID: 29802974 PMCID: PMC6058088 DOI: 10.1016/j.joca.2018.05.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 05/04/2018] [Accepted: 05/16/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The aims of this study were: to 1) develop a novel sample processing protocol to visualize human articular cartilage (AC) chondrons using micro-computed tomography (μCT), 2) develop and validate an algorithm to quantify the chondron morphology in 3D, and 3) compare the differences in chondron morphology between intact and osteoarthritic AC. METHOD The developed protocol is based on the dehydration of samples with hexamethyldisilazane (HMDS), followed by imaging with a desktop μCT. Chondron density and depth, as well as volume and sphericity, were calculated in 3D with a custom-made and validated algorithm employing semi-automatic chondron selection and segmentation. The quantitative parameters were analyzed at three AC depth zones (zone 1: 0-10%; zone 2: 10-40%; zone 3: 40-100%) and grouped by the OARSI histological grades (OARSI grades 0-1.0, n = 6; OARSI grades 3.0-3.5, n = 6). RESULTS After semi-automatic chondron selection and segmentation, 1510 chondrons were approved for 3D morphometric analyses. The chondrons especially in the deeper tissue (zones 2 and 3) were significantly larger (P < 0.001) and less spherical (P < 0.001), respectively, in the OARSI grade 3-3.5 group compared to the OARSI grade 0-1.0 group. No statistically significant difference in chondron density between the OARSI grade groups was observed at different depths. CONCLUSION We have developed a novel sample processing protocol for chondron imaging in 3D, as well as a high-throughput algorithm to semi-automatically quantify chondron/chondrocyte 3D morphology in AC. Our results also suggest that 3D chondron morphology is affected by the progression of osteoarthritis (OA).
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Affiliation(s)
- I. Kestilä
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Address correspondence and reprint requests to: I. Kestilä, Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, POB 5000, FI-90014 Oulu, Finland.
| | - J. Thevenot
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Infotech Oulu, University of Oulu, Finland
| | - M.A. Finnilä
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Department of Applied Physics, University of Eastern Finland, Kuopio, Finland,Medical Research Center, University of Oulu, Oulu, Finland
| | - S.S. Karhula
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Infotech Oulu, University of Oulu, Finland
| | - I. Hadjab
- Institute of Biomedical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Quebec H3C 3A7, Canada,Biomomentum Inc., 970 Michelin St., Suite 200, Laval, Quebec H7L 5C1, Canada
| | - S. Kauppinen
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - M. Garon
- Biomomentum Inc., 970 Michelin St., Suite 200, Laval, Quebec H7L 5C1, Canada
| | - E. Quenneville
- Biomomentum Inc., 970 Michelin St., Suite 200, Laval, Quebec H7L 5C1, Canada
| | - M. Haapea
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Medical Research Center, University of Oulu, Oulu, Finland,Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
| | - L. Rieppo
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - K.P. Pritzker
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada,Mount Sinai Hospital, Toronto, Ontario, Canada
| | - M.D. Buschmann
- Institute of Biomedical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Quebec H3C 3A7, Canada,Groupe de Recherche en Sciences et Technologies Biomédicales, Polytechnique Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Quebec H3C 3A7, Canada
| | - H.J. Nieminen
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Department of Physics, University of Helsinki, Helsinki, Finland,Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland
| | - S. Saarakkala
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland,Medical Research Center, University of Oulu, Oulu, Finland,Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
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Mantripragada VP, Bova WA, Boehm C, Piuzzi NS, Obuchowski NA, Midura RJ, Muschler GF. Progenitor cells from different zones of human cartilage and their correlation with histopathological osteoarthritis progression. J Orthop Res 2018; 36:1728-1738. [PMID: 29240251 DOI: 10.1002/jor.23829] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 12/04/2017] [Indexed: 02/04/2023]
Abstract
Cell-based therapies development for the treatment of osteoarthritis (OA) requires an understanding of the disease progression and attributes of the cells resident in cartilage. This study focused on quantitative assessment of the concentration and biological potential of stem and progenitor cells resident in different zones of cartilage displaying macroscopic Outerbridge grade 1-2 OA, and their correlation with OA progression based on established histologic scoring system. Lateral femoral condyles were collected from 15 patients with idiopathic OA and varus knees undergoing total knee arthroplasty. Superficial(Csp , top ∼ 500 µm) and deep cartilage(Cdp ) was separated. Chondrogenic Connective Tissue Progenitors (CTP-C) were assayed by standardized Colony-Forming-Unit assay using automated image analysis (ColonyzeTM ) based on ASTM standard F-2944-12. Cell concentration (cells/mg) was significantly greater in Csp (median: 7,000; range: 3,440-17,600) than Cdp (median: 5,340; range: 3,393-9,660), p = 0.039. Prevalence (CTPs/million cells) was not different between Csp (median: 1,274; range: 0-3,898) and Cdp (median:1,365; range:0-6,330), p = 0.42. In vitro performance of CTP-C progeny varied widely within and between patients, manifest by variation in colony size and morphology. Mean histopathological Mankin score was 4.7 (SD = 1.2), representing mild to moderate OA. Tidemark breach by blood vessels was associated with lower Csp cell concentration (p = 0.02). Matrix degradation was associated with lower Cdp cell and CTP-C concentration (p = 0.015 and p = 0.095, respectively), independent of articular surface changes. These findings suggest that the initiation of OA may occur in either superficial or deep zones. The pathological changes affect CTP-Cs in Csp and Cdp cartilage zones differently. The heterogeneity among the available CTP-Cs in Csp and Cdp suggests performance-based selection to optimize cell-sourcing strategies for therapy. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1728-1738, 2018.
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Affiliation(s)
- Venkata P Mantripragada
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195
| | - Wesley A Bova
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195
| | - Cynthia Boehm
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195
| | - Nicolas S Piuzzi
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195.,Department of Orthopedic Surgery, Cleveland Clinic, Cleveland, Ohio, 44195.,Instituto Universitario del Hospital Italiano de Buenos Aires, Buenos Aires, 1182, Argentina
| | - Nancy A Obuchowski
- Department of Quantitative Health Science, Cleveland Clinic, Cleveland, Ohio, 44195
| | - Ronald J Midura
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195
| | - George F Muschler
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, Ohio, 44195.,Department of Orthopedic Surgery, Cleveland Clinic, Cleveland, Ohio, 44195
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Trevino RL, Pacione CA, Malfait AM, Chubinskaya S, Wimmer MA. Development of a Cartilage Shear-Damage Model to Investigate the Impact of Surface Injury on Chondrocytes and Extracellular Matrix Wear. Cartilage 2017; 8:444-455. [PMID: 28934882 PMCID: PMC5613899 DOI: 10.1177/1947603516681133] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background Many i n vitro damage models investigate progression of cartilage degradation after a supraphysiologic, compressive impact at the surface and do not model shear-induced damage processes. Models also neglect the response to uninterrupted tribological stress after damage. It was hypothesized that shear-induced removal of the superficial zone would accelerate matrix degradation when damage was followed by continued load and articulation. Methods Bovine cartilage underwent a 5-day test. Shear-damaged samples experienced 2 days of damage induction with articulation against polyethylene and then continued articulation against cartilage (CoC), articulation against metal (MoC), or rest as free-swelling control (FSC). Surface-intact samples were randomized to CoC, MoC, or FSC for the entire 5-day test. Samples were evaluated for chondrocyte viability, GAG (glycosaminoglycan) release (matrix wear surrogate), and histological integrity. Results Shear induction wore away the superficial zone. Damaged samples began continued articulation with collagen matrix disruption and increased cell death compared to intact samples. In spite of the damaged surface, these samples did not exhibit higher GAG release than intact samples articulating against the same counterface ( P = 0.782), contrary to our hypothesis. Differences in GAG release were found to be due to tribological testing against metal ( P = 0.003). Conclusion Shear-induced damage lowers chondrocyte viability and affects extracellular matrix integrity. Continued motion of either cartilage or metal against damaged surfaces did not increase wear compared with intact samples. We conjecture that favorable reorganization of the surface collagen fibers during articulation protected the underlying matrix. This finding suggests a potential window for clinical interventions to slow matrix degradation after traumatic incidents.
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Affiliation(s)
- Robert L. Trevino
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL, USA
| | - Carol A. Pacione
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Anne-Marie Malfait
- Department of Internal Medicine (Rheumatology), Rush University Medical Center, Chicago, IL, USA
| | - Susan Chubinskaya
- Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA
| | - Markus A. Wimmer
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
- Markus A. Wimmer, Department of Orthopedic Surgery, Rush University Medical Center, 1611 West Harrison Street, Chicago, IL 60612, USA.
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Hsueh MF, Kraus VB, Önnerfjord P. Cartilage matrix remodelling differs by disease state and joint type. Eur Cell Mater 2017; 34:70-82. [PMID: 28836259 PMCID: PMC5599932 DOI: 10.22203/ecm.v034a05] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Dramatic alterations in mechanical properties have been documented for osteoarthritic (OA) cartilage. However, the matrix composition underlying these changes has not been mapped and their aetiology is not entirely understood. We hypothesised that an understanding of the cartilage matrix heterogeneity could provide insights into the origin of these OA-related alterations. We generated serial transverse cryo sections for 7 different cartilage conditions: 2 joint sites (knee and hip), 2 disease states (healthy and OA) and 3 tissue depths (superficial, middle and deep). By laser capture microscopy, we acquired ~200 cartilage matrix specimens from territorial (T) and interterritorial (IT) regions for all 7 conditions. A standardised matrix area was collected for each condition for a total of 0.02 ± 0.001 mm3 (corresponding to 20 µg of tissue) from a total of 4800 specimens. Extracted proteins were analysed for abundance by targeted proteomics. For most proteins, a lower IT/T ratio was observed for the OA disease state and knee joint type. A major cause of the altered IT/T ratios was the decreased protein abundance in IT regions. The collagenase-derived type III collagen neo-epitope, indicative of collagen proteolysis, was significantly more abundant in OA cartilage. In addition, it was enriched on average of 1.45-fold in IT relative to T matrix. These results were consistent with an elevated proteolysis in IT regions of OA cartilage, due to degenerative influences originating from synovial tissue and/or produced locally by chondrocytes. In addition, they offered direct evidence for dynamic remodelling of cartilage and provided a cogent biochemical template for understanding the alterations of matrix mechanical properties.
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Affiliation(s)
- Ming-Feng Hsueh
- Duke Molecular Physiology Institute, Duke University School of Medicine, Duke University, Durham, NC 27701
| | - Virginia Byers Kraus
- Duke Molecular Physiology Institute, Duke University School of Medicine, Duke University, Durham, NC 27701,Department of Medicine, Duke University School of Medicine, Duke University, Durham, NC 27701
| | - Patrik Önnerfjord
- Department of Clinical Sciences Lund, Section of Rheumatology and Molecular Skeletal Biology Center of Excellence in Biological and Medical Mass Spectrometry, Lund University, Lund, Sweden
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Hasegawa A, Yonezawa T, Taniguchi N, Otabe K, Akasaki Y, Matsukawa T, Saito M, Neo M, Marmorstein LY, Lotz MK. Role of Fibulin 3 in Aging-Related Joint Changes and Osteoarthritis Pathogenesis in Human and Mouse Knee Cartilage. Arthritis Rheumatol 2017; 69:576-585. [PMID: 27780308 DOI: 10.1002/art.39963] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 10/13/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The EFEMP1 gene encoding fibulin 3 is specifically expressed in the superficial zone (SZ) of articular cartilage. The aims of this study were to examine the expression patterns of fibulin 3 in the knee joints during aging and during osteoarthritis (OA) and to determine the role of fibulin 3 in the pathogenesis of OA. METHODS Immunohistochemical analysis was performed on normal and OA knee cartilage samples from humans and mice. Experimental OA was induced in wild-type and fibulin 3-/- mice, and the severity of OA was evaluated by histologic scoring. To examine fibulin 3 function, human chondrocyte monolayer cultures were transfected with small interfering RNA (siRNA), followed by quantitative polymerase chain reaction and Western blot analyses. Human bone marrow-derived mesenchymal stem cells (BM-MSCs) were transduced with an EFEMP1 lentivirus and analyzed for markers of chondrogenesis. RESULTS Fibulin 3 was specifically expressed in the SZ of normal knee joint cartilage from humans and mice, and the expression levels declined with aging. Both aging-related OA and experimental OA were significantly more severe in fibulin 3-/- mice compared with wild-type mice. Fibulin 3 expression was high in undifferentiated human BM-MSCs and decreased during chondrogenesis. Suppression of fibulin 3 by siRNA significantly increased the expression of SOX9, type II collagen, and aggrecan in human articular chondrocytes, while overexpression of fibulin 3 inhibited chondrogenesis in BM-MSCs. CONCLUSION Fibulin 3 is specifically expressed in the SZ of articular cartilage and its expression is reduced in aging and OA. Fibulin 3 regulates differentiation of adult progenitor cells, and its aging-related decline is an early event in the pathogenesis of OA. Preventing aging-associated loss of fibulin 3 or restoring it to normal levels in SZ chondrocytes has the potential to delay or prevent the onset of OA.
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Affiliation(s)
- Akihiko Hasegawa
- The Scripps Research Institute, La Jolla, California, and Osaka Medical College, Osaka, Japan
| | - Tomo Yonezawa
- The Scripps Research Institute, La Jolla, California
| | | | - Koji Otabe
- The Scripps Research Institute, La Jolla, California
| | - Yukio Akasaki
- The Scripps Research Institute, La Jolla, California
| | | | | | | | | | - Martin K Lotz
- The Scripps Research Institute, La Jolla, California
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Cheng S, Pourteymoor S, Alarcon C, Mohan S. Conditional Deletion of the Phd2 Gene in Articular Chondrocytes Accelerates Differentiation and Reduces Articular Cartilage Thickness. Sci Rep 2017; 7:45408. [PMID: 28349987 PMCID: PMC5368651 DOI: 10.1038/srep45408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 02/23/2017] [Indexed: 12/16/2022] Open
Abstract
Based on our findings that PHD2 is a negative regulator of chondrocyte differentiation and that hypoxia signaling is implicated in the pathogenesis of osteoarthritis, we investigated the consequence of disruption of the Phd2 gene in chondrocytes on the articular cartilage phenotype in mice. Immunohistochemistry detected high expression of PHD2 in the superficial zone (SZ), while PHD3 and HIF-1α (target of PHD2) are mainly expressed in the middle-deep zone (MDZ). Conditional deletion of the Phd2 gene (cKO) in chondrocytes accelerated the transition of progenitors to hypertrophic (differentiating) chondrocytes as revealed by reduced SZ thickness, and increased MDZ thickness, as well as increased chondrocyte hypertrophy. Immunohistochemistry further revealed decreased levels of progenitor markers but increased levels of hypertrophy markers in the articular cartilage of the cKO mice. Treatment of primary articular chondrocytes, in vitro, with IOX2, a specific inhibitor of PHD2, promoted articular chondrocyte differentiation. Knockdown of Hif-1α expression in primary articular chondrocytes using lentiviral vectors containing Hif-1α shRNA resulted in reduced expression levels of Vegf, Glut1, Pgk1, and Col10 compared to control shRNA. We conclude that Phd2 is a key regulator of articular cartilage development that acts by inhibiting the differentiation of articular cartilage progenitors via modulating HIF-1α signaling.
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Affiliation(s)
- Shaohong Cheng
- Musculoskeletal Disease Center, Veterans Affairs Loma Linda Healthcare System, 11201 Benton Street, Loma Linda, CA 92357, USA
| | - Sheila Pourteymoor
- Musculoskeletal Disease Center, Veterans Affairs Loma Linda Healthcare System, 11201 Benton Street, Loma Linda, CA 92357, USA
| | - Catrina Alarcon
- Musculoskeletal Disease Center, Veterans Affairs Loma Linda Healthcare System, 11201 Benton Street, Loma Linda, CA 92357, USA
| | - Subburaman Mohan
- Musculoskeletal Disease Center, Veterans Affairs Loma Linda Healthcare System, 11201 Benton Street, Loma Linda, CA 92357, USA.,Department of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
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45
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Zhang Y, Fukui N, Yahata M, Katsuragawa Y, Tashiro T, Ikegawa S, Lee MTM. Genome-wide DNA methylation profile implicates potential cartilage regeneration at the late stage of knee osteoarthritis. Osteoarthritis Cartilage 2016; 24:835-43. [PMID: 26746145 DOI: 10.1016/j.joca.2015.12.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/01/2015] [Accepted: 12/16/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The aim of this work was to characterize the genome-wide DNA methylation profile of cartilage from three regions of tibial plateau isolated from patients with primary knee osteoarthritis (OA), providing the first DNA methylation study that reflects OA progression. METHODS The unique model system was used to section three regions of tibial plateau: the outer lateral tibial plateau (oLT), the inner lateral tibial plateau (iLT) and the inner medial tibial plateau (iMT) regions which represented the early, intermediate and late stages of OA, respectively. Genome-wide DNA methylation profile was examined using Illumina Infinium HumanMethylation450 BeadChip array. Comparisons of the iLT/oLT and iMT/oLT groups were carried out to identify differentially methylated (DM) probes (DMPs) associated with OA progression. DM genes were analyzed to identify the gene ontologies (GO), pathways, upstream regulators and networks. RESULTS No significant DMPs were identified in iLT/oLT group, while 519 DMPs were identified in iMT/oLT group. Over half of them (68.2%) were hypo-methylated and enriched in enhancers and OpenSea. Upstream regulator analysis identified many microRNAs. DM genes were enriched in transcription factors, especially homeobox genes and in Wnt/β-catenin signaling pathway. These genes also showed changes in expression when analyzed with expression profiles generated from previous studies. CONCLUSION Our data suggested the changes in DNA methylation occurred at the late stage of OA. Pathways and networks enriched in identified DM genes highlighted potential etiologic mechanism and implicated the potential cartilage regeneration in the late stage of knee OA.
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Affiliation(s)
- Y Zhang
- Laboratory for International Alliance on Genomic Research, Center for Integrative Medical Sciences, RIKEN, Yokohama, Japan
| | - N Fukui
- Department of Life Sciences, Graduate School of Art and Sciences, the University of Tokyo, and Clinical Research Center, National Hospital Organization Sagamihara Hospital, Kanagawa, Japan
| | - M Yahata
- Laboratory for International Alliance on Genomic Research, Center for Integrative Medical Sciences, RIKEN, Yokohama, Japan; Laboratory for Pharmacogenomics, Center for Integrative Medical Sciences, RIKEN, Yokohama, Japan
| | - Y Katsuragawa
- Department of Orthopaedic Surgery, Center Hospital of the National Center for Global Health and Medicine Center Hospital, Tokyo, Japan
| | - T Tashiro
- Department of Orthopaedic Surgery, Tokyo Yamate Medical Center, Tokyo, Japan
| | - S Ikegawa
- Laboratory for Bone and Joint Diseases, Center for Integrative Medical Sciences, RIKEN, Tokyo, Japan
| | - M T Michael Lee
- Laboratory for International Alliance on Genomic Research, Center for Integrative Medical Sciences, RIKEN, Yokohama, Japan; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC.
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Moeinzadeh S, Pajoum Shariati SR, Jabbari E. Comparative effect of physicomechanical and biomolecular cues on zone-specific chondrogenic differentiation of mesenchymal stem cells. Biomaterials 2016; 92:57-70. [PMID: 27038568 DOI: 10.1016/j.biomaterials.2016.03.034] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 02/29/2016] [Accepted: 03/22/2016] [Indexed: 01/20/2023]
Abstract
Current tissue engineering approaches to regeneration of articular cartilage rarely restore the tissue to its normal state because the generated tissue lacks the intricate zonal organization of the native cartilage. Zonal regeneration of articular cartilage is hampered by the lack of knowledge for the relation between physical, mechanical, and biomolecular cues and zone-specific chondrogenic differentiation of progenitor cells. This work investigated in 3D the effect of TGF-β1, zone-specific growth factors, optimum matrix stiffness, and adding nanofibers on the expression of chondrogenic markers specific to the superficial, middle, and calcified zones of articular cartilage by the differentiating human mesenchymal stem cells (hMSCs). Growth factors included BMP-7, IGF-1, and hydroxyapatite (HA) for the superficial, middle, and calcified zones, respectively; optimum matrix stiffness was 80 kPa, 2.1 MPa, and 320 MPa; and nanofibers were aligned horizontal, random, and perpendicular to the gel surface. hMSCs with zone-specific cell densities were encapsulated in engineered hydrogels and cultured with or without TGF-β1, zone-specific growth factor, optimum matrix modulus, and fiber addition and cultured in basic chondrogenic medium. The expression of encapsulated cells was measured by mRNA, protein, and biochemical analysis. Results indicated that zone-specific matrix stiffness had a dominating effect on chondrogenic differentiation of hMSCs to the superficial and calcified zone phenotypes. Addition of aligned nanofibers parallel to the direction of gel surface significantly enhanced expression of Col II in the superficial zone chondrogenic differentiation of hMSCs. Conversely, biomolecular factor IGF-1 in combination with TGF-β1 had a dominating effect on the middle zone chondrogenic differentiation of hMSCs. Results of this work could potentially lead to the development of multilayer grafts mimicking the zonal organization of articular cartilage.
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Affiliation(s)
- Seyedsina Moeinzadeh
- Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA
| | - Seyed Ramin Pajoum Shariati
- Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA
| | - Esmaiel Jabbari
- Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA.
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Di Luca A, Longoni A, Criscenti G, Lorenzo-Moldero I, Klein-Gunnewiek M, Vancso J, van Blitterswijk C, Mota C, Moroni L. Surface energy and stiffness discrete gradients in additive manufactured scaffolds for osteochondral regeneration. Biofabrication 2016; 8:015014. [DOI: 10.1088/1758-5090/8/1/015014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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48
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Guzzo RM, Alaee F, Paglia D, Gibson JD, Spicer D, Drissi H. Aberrant expression of Twist1 in diseased articular cartilage and a potential role in the modulation of osteoarthritis severity. Genes Dis 2016; 3:88-99. [PMID: 30258877 PMCID: PMC6146614 DOI: 10.1016/j.gendis.2015.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 12/29/2015] [Indexed: 12/21/2022] Open
Abstract
The bHLH transcription factor Twist1 has emerged as a negative regulator of chondrogenesis in skeletal progenitor cells and as an inhibitor of maturation in growth plate chondrocytes. However, its role in articular cartilage remains obscure. Here we examine Twist1 expression during re-differentiation of expanded human articular chondrocytes, the distribution of Twist1 proteins in normal versus OA human articular cartilage, and its role in modulating OA development in mice. High levels of Twist1 transcripts were detected by qPCR analyses of expanded de-differentiated human articular chondrocytes that had acquired mesenchymal-like features. The induction of hallmark cartilage genes by Bmp-2 mediated chondrogenic differentiation was paralleled by the dramatic suppression of Twist1 in vitro. In normal human articular cartilage, Twist1-expressing chondrocytes were most abundant in the superficial zone with little to no expression in the middle and deep zones. However, our analyses revealed a higher proportion of deep zone articular chondrocytes expressing Twist1 in human OA cartilage as compared to normal articular cartilage. Moreover, Twist1 expression was prominent within proliferative cell clusters near fissure sites in more severely affected OA samples. To assess the role of Twist1 in OA pathophysiology, we subjected wild type mice and transgenic mice with gain of Twist1 function in cartilage to surgical destabilization of the medial meniscus. At 12 weeks post-surgery, micro-CT and histological analyses revealed attenuation of the OA phenotype in Twist1 transgenic mice compared to wild type mice. Collectively, the data reveal a role for Twist in articular cartilage maintenance and the attenuation of cartilage degeneration.
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Affiliation(s)
- Rosa M Guzzo
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA.,Stem Cell Institute, UConn Health, Farmington, CT, USA
| | - Farhang Alaee
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
| | - David Paglia
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
| | - Jason D Gibson
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
| | - Douglas Spicer
- Center for Molecular Medicine, Maine Medical Center Research Institute, Scarborough, ME, USA
| | - Hicham Drissi
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA.,Stem Cell Institute, UConn Health, Farmington, CT, USA
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Karimi T, Barati D, Karaman O, Moeinzadeh S, Jabbari E. A developmentally inspired combined mechanical and biochemical signaling approach on zonal lineage commitment of mesenchymal stem cells in articular cartilage regeneration. Integr Biol (Camb) 2015; 7:112-27. [PMID: 25387395 DOI: 10.1039/c4ib00197d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Articular cartilage is organized into multiple zones including superficial, middle and calcified zones with distinct cellular and extracellular components to impart lubrication, compressive strength, and rigidity for load transmission to bone, respectively. During native cartilage tissue development, changes in biochemical, mechanical, and cellular factors direct the formation of stratified structure of articular cartilage. The objective of this work was to investigate the effect of combined gradients in cell density, matrix stiffness, and zone-specific growth factors on the zonal organization of articular cartilage. Human mesenchymal stem cells (hMSCs) were encapsulated in acrylate-functionalized lactide-chain-extended polyethylene glycol (SPELA) gels simulating cell density and stiffness of the superficial, middle and calcified zones. The cell-encapsulated gels were cultivated in a medium supplemented with growth factors specific to each zone and the expression of zone-specific markers was measured with incubation time. Encapsulation of 60 × 10(6) cells per mL hMSCs in a soft gel (80 kPa modulus) and cultivation with a combination of TGF-β1 (3 ng mL(-1)) and BMP-7 (100 ng mL(-1)) led to the expression of markers for the superficial zone. Conversely, encapsulation of 15 × 10(6) cells per mL hMSCs in a stiff gel (320 MPa modulus) and cultivation with a combination of TGF-β1 (30 ng mL(-1)) and hydroxyapatite (3%) led to the expression of markers for the calcified zone. Further, encapsulation of 20 × 10(6) cells per mL hMSCs in a gel with 2.1 MPa modulus and cultivation with a combination of TGF-β1 (30 ng mL(-1)) and IGF-1 (100 ng mL(-1)) led to up-regulation of the middle zone markers. Results demonstrate that a developmental approach with gradients in cell density, matrix stiffness, and zone-specific growth factors can potentially regenerate zonal structure of the articular cartilage.
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Affiliation(s)
- Tahereh Karimi
- Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Swearingen Engineering Center, Rm 2C11, Columbia, SC 29208, USA.
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Tiku ML, Sabaawy HE. Cartilage regeneration for treatment of osteoarthritis: a paradigm for nonsurgical intervention. Ther Adv Musculoskelet Dis 2015; 7:76-87. [PMID: 26029269 DOI: 10.1177/1759720x15576866] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA) is associated with articular cartilage abnormalities and affects people of older age: preventative or therapeutic treatment measures for OA and related articular cartilage disorders remain challenging. In this perspective review, we have integrated multiple biological, morphological, developmental, stem cell and homeostasis concepts of articular cartilage to develop a paradigm for cartilage regeneration. OA is conceptually defined as an injury of cartilage that initiates chondrocyte activation, expression of proteases and growth factor release from the matrix. This regenerative process results in the local activation of inflammatory response genes in cartilage without migration of inflammatory cells or angiogenesis. The end results are catabolic and anabolic responses, and it is the balance between these two outcomes that controls remodelling of the matrix and regeneration. A tantalizing clinical clue for cartilage regrowth in OA joints has been observed in surgically created joint distraction. We hypothesize that cartilage growth in these distracted joints may have a biological connection with the size of organs and regeneration. Therefore we propose a novel, practical and nonsurgical intervention to validate the role of distraction in cartilage regeneration in OA. The approach permits normal wake-up activity while during sleep; the index knee is subjected to distraction with a pull traction device. Comparison of follow-up magnetic resonance imaging (MRI) at 3 and 6 months of therapy to those taken before therapy will provide much-needed objective evidence for the use of this mode of therapy for OA. We suggest that the paradigm presented here merits investigation for treatment of OA in knee joints.
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Affiliation(s)
- Moti L Tiku
- Department of Medicine, Robert Wood Johnson Medical School, New Brunswick, NJ 08903-2681, USA
| | - Hatem E Sabaawy
- Rutgers Cancer Institute of New Jersey, Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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