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Xu L, Ma J, Zhou C, Shen Z, Zhu K, Wu X, Chen Y, Chen T, Lin X. Identification of key hub genes in knee osteoarthritis through integrated bioinformatics analysis. Sci Rep 2024; 14:22437. [PMID: 39341952 PMCID: PMC11439059 DOI: 10.1038/s41598-024-73188-z] [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: 05/16/2024] [Accepted: 09/16/2024] [Indexed: 10/01/2024] Open
Abstract
Knee osteoarthritis (KOA) is a common chronic joint disease globally. Synovial inflammation plays a pivotal role in its pathogenesis, preceding cartilage damage. Identifying biomarkers in osteoarthritic synovial tissues holds promise for early diagnosis and targeted interventions. Gene expression profiles were obtained from the Gene Expression Omnibus database. Subsequent analyses included differential expression gene (DEG) analysis and weighted gene co-expression network analysis (WGCNA) on the combined datasets. We performed functional enrichment analysis on the overlapping genes between DEGs and module genes and constructed a protein-protein interaction network. Using Cytoscape software, we identified hub genes related to the disease and conducted gene set enrichment analysis on these hub genes. The CIBERSORT algorithm was employed to evaluate the correlation between hub genes and the abundance of immune cells within tissues. Finally, Mendelian randomization analysis was utilized to assess the potential of these hub genes as biomarkers. We identified 46 differentially expressed genes (DEGs), comprising 20 upregulated and 26 downregulated genes. Using WGCNA, we constructed a gene co-expression network and selected the most relevant modules, resulting in 24 intersecting genes with the DEGs. KEGG enrichment analysis of the intersecting genes identified the IL-17 signaling pathway, associated with inflammation, as the most significant pathway. Cytoscape software was utilized to rank the candidate genes, with JUN, ATF3, FOSB, NR4A2, and IL6 emerging as the top five based on the Degree algorithm. A nomogram model incorporating these five genes, supported by ROC curve analysis, validated their diagnostic efficacy. Immune infiltration and correlation analysis revealed that macrophages were significantly associated with JUN (p < 0.01), FOSB (p < 0.01), and NR4A2 (p < 0.05). Additionally, T follicular helper cells showed significant associations with ATF3 (p < 0.05), FOSB (p < 0.05), and JUN (p < 0.05). Mendelian randomization analysis provided strong evidence linking JUN (IVW: OR = 0.910, p = 0.005) and IL6 (IVW: OR = 1.024, p = 0.026) with KOA. Through the utilization of various bioinformatics analysis methods, we have pinpointed key hub genes relevant to knee osteoarthritis. These findings hold promise for advancing pre-symptomatic diagnostic strategies and enhancing our understanding of the biological underpinnings behind knee osteoarthritis susceptibility genes.
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Affiliation(s)
- Lilei Xu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jiaqi Ma
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chuanlong Zhou
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Acupuncture, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhe Shen
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kean Zhu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xuewen Wu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yang Chen
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ting Chen
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xianming Lin
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China.
- Department of Acupuncture, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.
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Li HZ, Zhang JL, Yuan DL, Xie WQ, Ladel CH, Mobasheri A, Li YS. Role of signaling pathways in age-related orthopedic diseases: focus on the fibroblast growth factor family. Mil Med Res 2024; 11:40. [PMID: 38902808 PMCID: PMC11191355 DOI: 10.1186/s40779-024-00544-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 06/12/2024] [Indexed: 06/22/2024] Open
Abstract
Fibroblast growth factor (FGF) signaling encompasses a multitude of functions, including regulation of cell proliferation, differentiation, morphogenesis, and patterning. FGFs and their receptors (FGFR) are crucial for adult tissue repair processes. Aberrant FGF signal transduction is associated with various pathological conditions such as cartilage damage, bone loss, muscle reduction, and other core pathological changes observed in orthopedic degenerative diseases like osteoarthritis (OA), intervertebral disc degeneration (IVDD), osteoporosis (OP), and sarcopenia. In OA and IVDD pathologies specifically, FGF1, FGF2, FGF8, FGF9, FGF18, FGF21, and FGF23 regulate the synthesis, catabolism, and ossification of cartilage tissue. Additionally, the dysregulation of FGFR expression (FGFR1 and FGFR3) promotes the pathological process of cartilage degradation. In OP and sarcopenia, endocrine-derived FGFs (FGF19, FGF21, and FGF23) modulate bone mineral synthesis and decomposition as well as muscle tissues. FGF2 and other FGFs also exert regulatory roles. A growing body of research has focused on understanding the implications of FGF signaling in orthopedic degeneration. Moreover, an increasing number of potential targets within the FGF signaling have been identified, such as FGF9, FGF18, and FGF23. However, it should be noted that most of these discoveries are still in the experimental stage, and further studies are needed before clinical application can be considered. Presently, this review aims to document the association between the FGF signaling pathway and the development and progression of orthopedic diseases. Besides, current therapeutic strategies targeting the FGF signaling pathway to prevent and treat orthopedic degeneration will be evaluated.
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Affiliation(s)
- Heng-Zhen Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Jing-Lve Zhang
- Department of Plastic and Cosmetic Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
- Xiangya School of Medicine Central, South University, Changsha, 410083, China
| | - Dong-Liang Yuan
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, China
- Xiangya School of Medicine Central, South University, Changsha, 410083, China
| | - Wen-Qing Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
| | | | - Ali Mobasheri
- Faculty of Medicine, Research Unit of Health Sciences and Technology, University of Oulu, 90014, Oulu, Finland.
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, 08406, Vilnius, Lithuania.
- Department of Rheumatology and Clinical Immunology, Universitair Medisch Centrum Utrecht, Utrecht, 3508, GA, the Netherlands.
- Department of Joint Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
- World Health Organization Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Université de Liège, B-4000, Liège, Belgium.
| | - Yu-Sheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China.
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Trippel SB. Harnessing Growth Factor Interactions to Optimize Articular Cartilage Repair. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1402:135-143. [PMID: 37052852 DOI: 10.1007/978-3-031-25588-5_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The failure of cartilage healing is a major impediment to recovery from joint disease or trauma. Growth factors play a central role in cell function and have been proposed as potential therapeutic agents to promote cartilage repair. Decades of investigation have identified many growth factors that promote the formation of cartilage in vitro and in vivo. However, very few of these have progressed to human trials. A growth factor that robustly augments articular cartilage healing remains elusive. This is not surprising. Articular cartilage repair involves multiple cellular processes and it is unlikely that any single agent will be able to optimally regulate all of them. It is more likely that multiple regulatory molecules may be required to optimize the maintenance and restoration of articular cartilage. If this is the case, then interactions among growth factors may be expected to play a key role in determining their therapeutic value. This review explores the hypothesis that growth factor interactions could help optimize articular cartilage healing.
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Affiliation(s)
- Stephen B Trippel
- Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA.
- Department of Biomedical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USA.
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Glutamine exerts a protective effect on osteoarthritis development by inhibiting the Jun N-terminal kinase and nuclear factor kappa-B signaling pathways. Sci Rep 2022; 12:11957. [PMID: 35831464 PMCID: PMC9279466 DOI: 10.1038/s41598-022-16093-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 07/04/2022] [Indexed: 11/08/2022] Open
Abstract
Strategies for treating osteoarthritis (OA) have become a research focus because an effective treatment for OA is unavailable. The objective of this study was to explore the effects and underlying mechanisms of glutamine (Gln) in OA. First, the chondrocytes were identified and a standard IL-1β-induced OA model was established. After treatment with Gln or saline, the viability and apoptosis of chondrocytes were evaluated using a CCK-8 assay and flow cytometry analysis, which revealed that Gln can improve the IL-1β-induced OA cells. Meanwhile, Gln can enhance the expression of aggrecan and collagen II, which are protective proteins for articular cartilage. Instead, Gln inhibited the expression of matrix metalloproteinase-1 (MMP-1) and matrix metalloproteinase-13 (MMP-13), which can degrade cartilage. To better understand the underlying mechanisms of Gln in IL-1β-induced chondrocytes, the classical OA pathways of JNK and NF-κB were examined at the protein and mRNA levels using western blot and qRT-PCR analyses. We found that JNK and NF-κB were downregulated gradually depending on the Gln dose and protective and destructive factors changed based on changes of JNK and NF-κB. The effects of high-dose Gln were more effective than low-dose. Moreover, Gln was applied to the animal OA model to check the effects in vivo. The results showed that Gln attenuated cartilage degeneration and decreased OARSI scores, which demonstrated that Gln can improve OA. The experiments showed that Gln can benefit mice with OA by inhibiting the JNK and NF-κB signaling pathways.
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Application of Alginate Hydrogels for Next-Generation Articular Cartilage Regeneration. Int J Mol Sci 2022; 23:ijms23031147. [PMID: 35163071 PMCID: PMC8835677 DOI: 10.3390/ijms23031147] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/28/2022] Open
Abstract
The articular cartilage has insufficient intrinsic healing abilities, and articular cartilage injuries often progress to osteoarthritis. Alginate-based scaffolds are attractive biomaterials for cartilage repair and regeneration, allowing for the delivery of cells and therapeutic drugs and gene sequences. In light of the heterogeneity of findings reporting the benefits of using alginate for cartilage regeneration, a better understanding of alginate-based systems is needed in order to improve the approaches aiming to enhance cartilage regeneration with this compound. This review provides an in-depth evaluation of the literature, focusing on the manipulation of alginate as a tool to support the processes involved in cartilage healing in order to demonstrate how such a material, used as a direct compound or combined with cell and gene therapy and with scaffold-guided gene transfer procedures, may assist cartilage regeneration in an optimal manner for future applications in patients.
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Iwan A, Moskalewski S, Hyc A. Growth factor profile in calcified cartilage from the metaphysis of a calf costochondral junction, the site of initial bone formation. Biomed Rep 2021; 14:54. [PMID: 33884197 PMCID: PMC8056382 DOI: 10.3892/br.2021.1430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/11/2021] [Indexed: 12/25/2022] Open
Abstract
Endochondral bone formation is orchestrated by growth factors produced by chondrocytes and deposited in the cartilage matrix. Whilst some of these factors have been identified, the complete list and their relationship remains unknown. In the present study, the growth factors were isolated from non-calcified and calcified cartilage of costochondral junctions. Cartilage dissected from the ribs of 6-20-week-old calves was purchased from a local butcher within 24 h of the death of the animal. The isolation involved hyaluronidase digestion, guanidinium hydrochloride (GuHCl) extraction, HCl decalcification and GuHCl extraction of the decalcified matrix. Growth factors were purified by heparin chromatography and their quantities were estimated using ELISA. Decalcified cartilage was also used for protein sequence analysis (data are available via ProteomeXchange; ID, PXD021781). Bone morphogenetic protein-7 (BMP-7), growth/differentiation factor-5 (GDF-5) and NEL-like protein-1 (NELL-1), all known growth factors that stimulate bone formation, quantitatively accounted for the majority of the material obtained in all steps of isolation. Thus, cartilage serves as a store for growth factors. During initial bone formation septoclasts release osteoclastogenesis-stimulating factors deposited in non-calcified cartilage. Osteoclasts dissolve calcified cartilage and transport the released factors required for the stimulation of osteoprogenitor cells to deposit osteoid. High concentrations of BMP-7, GDF-5 and NELL-1 at the site of initial bone formation may suggest that their synergistic action favours osteogenesis.
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Affiliation(s)
- Anna Iwan
- Department of Histology and Embryology, Medical University of Warsaw, Warsaw PL02004, Poland
| | - Stanisław Moskalewski
- Department of Histology and Embryology, Medical University of Warsaw, Warsaw PL02004, Poland
| | - Anna Hyc
- Department of Histology and Embryology, Medical University of Warsaw, Warsaw PL02004, Poland
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Xu Y, Gu Y, Ji W, Dong Q. Activation of the extracellular-signal-regulated kinase (ERK)/c-Jun N-terminal kinase (JNK) signal pathway and osteogenic factors in subchondral bone of patients with knee osteoarthritis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:663. [PMID: 33987361 PMCID: PMC8106020 DOI: 10.21037/atm-21-1215] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 04/22/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND The objectives of this study was to explore the activation of the extracellular-signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) signaling pathway and osteogenesis-related factors in the subchondral bone of patients with knee osteoarthritis (OA). METHODS Ten patients with primary OA who underwent total knee arthroplasty in the Department of Arthritis Surgery of our hospital were enrolled, and subchondral bone tissue samples were obtained during the operation. He staining and saffron staining were used to observe the arrangement of chondrocytes in the patient tissues. The protein expression levels of JNK, p-JNK, ERK, p-ERK, Runx2 and OMD in subchondral bone were detected by Western Blot. Knee osteoarthritis mice were established. He staining was used to observe the arrangement of subchondral bone cells in the knee joint of mice. Cellular mineralized nodules were determined by alizarin red staining. RESULTS Firstly, in general and staining, it was observed that the subchondral bone lesions of knee OA participants were obvious. Compared with normal knee joints, the levels of phosphorylation-c-Jun N-terminal kinase (P-JNK) and phosphorylation-extracellular-signal-regulated kinase (P-ERK) in the subchondral bone of knee arthritis participants were significantly increased (P<0.05). The level of osteomodulin (OMD) was significantly reduced (P<0.05). Secondly, compared with normal mice, the levels of JNK, P-JNK, OMD, ERK, and P-ERK in the model group were significantly different (P<0.05). At 2-8 weeks, the JNK and P-JNK levels in the mice model group increased significantly over time (P<0.05), and the OMD level decreased significantly over time (P<0.05). The levels of ERK and P-ERK fluctuated over time. Thirdly, osteoblasts were treated with different concentrations of anisomycin, and stained with alizarin red after continuous culture for 24 and 48 h, respectively. It was found that all the cells were stained with orange-red mineralized nodules. As the concentration of anisomycin was increased, the number of cell mineralization nodules was significantly larger, and the positive rate of chemical nodules increased. Different concentrations of anisomycin were given to interfere with the osteoblasts of mice. When anisomycin was administered at a dose of 25 ng, the OMD level reached the highest level. When the concentration of anisomycin was increased, the osteocalcin (OCN) level also showed an upward trend. CONCLUSIONS The process by which the JNK signaling pathway regulates OMD may be closely related to the pathological changes of subchondral bone in patients with knee OA, and is involved in the occurrence and development of knee arthritis.
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Affiliation(s)
- Yaofeng Xu
- Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou, China
- Department of Orthopedics, Suzhou Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Suzhou, China
| | - Yuguo Gu
- Department of Orthopedics, Suzhou Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Suzhou, China
| | - Wanbo Ji
- Department of Orthopedics, Suzhou Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Suzhou, China
| | - Qirong Dong
- Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou, China
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Rorick CB, Mitchell JA, Bledsoe RH, Floren ML, Wilkins RM. Cryopreserved, Thin, Laser-Etched Osteochondral Allograft maintains the functional components of articular cartilage after 2 years of storage. J Orthop Surg Res 2020; 15:521. [PMID: 33176819 PMCID: PMC7659100 DOI: 10.1186/s13018-020-02049-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/28/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Despite improvements in treatment options and techniques, articular cartilage repair continues to be a challenge for orthopedic surgeons. This study provides data to support that the 2-year Cryopreserved, Thin, Laser-Etched Osteochondral Allograft (T-LE Allograft) embodies the necessary viable cells, protein signaling, and extracellular matrix (ECM) scaffold found in fresh cartilage in order to facilitate a positive clinical outcome for cartilage defect replacement and repair. METHODS Viability testing was performed by digestion of the graft, and cells were counted using a trypan blue assay. Growth factor and ECM protein content was quantified using biochemical assays. A fixation model was introduced to assess tissue outgrowth capability and cellular metabolic activity in vitro. Histological and immunofluorescence staining were employed to confirm tissue architecture, cellular outgrowth, and presence of ECM. The effects of the T-LE Allograft to signal bone marrow-derived mesenchymal stem cell (BM-MSC) migration and chondrogenic differentiation were evaluated using in vitro co-culture assays. Immunogenicity testing was completed using flow cytometry analysis of cells obtained from digested T-LE Allografts and fresh articular cartilage. RESULTS Average viability of the T-LE Allograft post-thaw was found to be 94.97 ± 3.38%, compared to 98.83 ± 0.43% for fresh articular cartilage. Explant studies from the in vitro fixation model confirmed the long-term viability and proliferative capacity of these chondrocytes. Growth factor and ECM proteins were quantified for the T-LE Allograft revealing similar profiles to fresh articular cartilage. Cellular signaling of the T-LE Allograft and fresh articular cartilage both exhibited similar outcomes in co-culture for migration and differentiation of BM-MSCs. Flow cytometry testing confirmed the T-LE Allograft is immune-privileged as it is negative for immunogenic markers and positive for chondrogenic markers. CONCLUSIONS Using our novel, proprietary cryopreservation method, the T-LE Allograft, retains excellent cellular viability, with native-like growth factor and ECM composition of healthy cartilage after 2 years of storage at - 80 °C. The successful cryopreservation of the T-LE Allograft alleviates the limited availably of conventionally used fresh osteochondral allograft (OCA), by providing a readily available and simple to use allograft solution. The results presented in this paper supports clinical data that the T-LE Allograft can be a successful option for repairing chondral defects.
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Affiliation(s)
- Carolyn B Rorick
- Innovation Department, AlloSource, 6278 S Troy Circle, Centennial, CO, 80111, USA.
| | - Jordyn A Mitchell
- Innovation Department, AlloSource, 6278 S Troy Circle, Centennial, CO, 80111, USA
| | - Ruth H Bledsoe
- Innovation Department, AlloSource, 6278 S Troy Circle, Centennial, CO, 80111, USA
| | - Michael L Floren
- Innovation Department, AlloSource, 6278 S Troy Circle, Centennial, CO, 80111, USA
| | - Ross M Wilkins
- Innovation Department, AlloSource, 6278 S Troy Circle, Centennial, CO, 80111, USA
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High-Throughput Identification of MiR-145 Targets in Human Articular Chondrocytes. Life (Basel) 2020; 10:life10050058. [PMID: 32403239 PMCID: PMC7281014 DOI: 10.3390/life10050058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/30/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) play key roles in cartilage development and homeostasis and are dysregulated in osteoarthritis. MiR-145 modulation induces profound changes in the human articular chondrocyte (HAC) phenotype, partially through direct repression of SOX9. Since miRNAs can simultaneously silence multiple targets, we aimed to identify the whole targetome of miR-145 in HACs, critical if miR-145 is to be considered a target for cartilage repair. We performed RIP-seq (RNA-immunoprecipitation and high-throughput sequencing) of miRISC (miRNA-induced silencing complex) in HACs overexpressing miR-145 to identify miR-145 direct targets and used cWords to assess enrichment of miR-145 seed matches in the identified targets. Further validations were performed by RT-qPCR, Western immunoblot, and luciferase assays. MiR-145 affects the expression of over 350 genes and directly targets more than 50 mRNAs through the 3′UTR or, more commonly, the coding region. MiR-145 targets DUSP6, involved in cartilage organization and development, at the translational level. DUSP6 depletion leads to MMP13 upregulation, suggesting a contribution towards the effect of miR-145 on MMP13 expression. In conclusion, miR-145 directly targets several genes involved in the expression of the extracellular matrix and inflammation in primary chondrocytes. Thus, we propose miR-145 as an important regulator of chondrocyte function and a new target for cartilage repair.
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Chiang ER, Ma HL, Wang JP, Chang MC, Liu CL, Chen TH, Hung SC. Use of Allogeneic Hypoxic Mesenchymal Stem Cells For Treating Disc Degeneration in Rabbits. J Orthop Res 2019; 37:1440-1450. [PMID: 31062869 DOI: 10.1002/jor.24342] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 04/09/2019] [Indexed: 02/04/2023]
Abstract
Intervertebral discs (IVDs) are important biomechanical components of the spine. Once degenerated, mesenchymal stem cell (MSC)-based therapies may aid in the repair of these discs. Although hypoxic preconditioning enhances the chondrogenic potential of MSCs, it is unknown whether bone marrow MSCs expanded under hypoxic conditions (1% O2 , here referred to as hypoxic MSCs) are better than bone marrow MSCs expanded under normoxic conditions (air, here referred to as normoxic MSCs) with regards to disc regeneration capacity. The purpose of this study was to compare the therapeutic effects of hypoxic and normoxic MSCs in a rabbit needle puncture degenerated disc model after intra-disc injection. Six weeks after needle puncture, MSCs were injected into the IVD. A vehicle-treated group and an un-punctured sham-control group were included as controls. The tissues were analyzed by histological and immunohistochemical methods 6 and 12 weeks post-injection. At 6 and 12 weeks, less disc space narrowing was evident in the hypoxic MSC-treated group compared to the normoxic MSC-treated group. Significantly better histological scores were observed in the hypoxic MSC group. Discs treated with hypoxic MSCs also demonstrated significantly better extracellular matrix deposition in type II and XI collagen. Increased CD105 and BMP-7 expression were also observed upon injection of hypoxic MSCs. In conclusion, hypoxic MSC injection was more effective than normoxic MSC injection for reducing IVD degeneration progression in vivo. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1440-1450, 2019.
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Affiliation(s)
- En-Rung Chiang
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Hsiao-Li Ma
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Jung-Pan Wang
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Ming-Chau Chang
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Chien-Lin Liu
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Tain-Hsiung Chen
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Shih-Chieh Hung
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, 112, Taiwan.,Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, 112, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, 115, Taiwan.,Integrative Stem Cell Center, China Medical University Hospital, Taichung, 404, Taiwan.,Institute of New Drug Development, China Medical University, Taichung, 404, Taiwan
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Onset and Progression of Human Osteoarthritis-Can Growth Factors, Inflammatory Cytokines, or Differential miRNA Expression Concomitantly Induce Proliferation, ECM Degradation, and Inflammation in Articular Cartilage? Int J Mol Sci 2018; 19:ijms19082282. [PMID: 30081513 PMCID: PMC6121276 DOI: 10.3390/ijms19082282] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 07/22/2018] [Accepted: 08/01/2018] [Indexed: 12/30/2022] Open
Abstract
Osteoarthritis (OA) is a degenerative whole joint disease, for which no preventative or therapeutic biological interventions are available. This is likely due to the fact that OA pathogenesis includes several signaling pathways, whose interactions remain unclear, especially at disease onset. Early OA is characterized by three key events: a rarely considered early phase of proliferation of cartilage-resident cells, in contrast to well-established increased synthesis, and degradation of extracellular matrix components and inflammation, associated with OA progression. We focused on the question, which of these key events are regulated by growth factors, inflammatory cytokines, and/or miRNA abundance. Collectively, we elucidated a specific sequence of the OA key events that are described best as a very early phase of proliferation of human articular cartilage (AC) cells and concomitant anabolic/catabolic effects that are accompanied by incipient pro-inflammatory effects. Many of the reviewed factors appeared able to induce one or two key events. Only one factor, fibroblast growth factor 2 (FGF2), is capable of concomitantly inducing all key events. Moreover, AC cell proliferation cannot be induced and, in fact, is suppressed by inflammatory signaling, suggesting that inflammatory signaling cannot be the sole inductor of all early OA key events, especially at disease onset.
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Ge HX, Zou FM, Li Y, Liu AM, Tu M. JNK pathway in osteoarthritis: pathological and therapeutic aspects. J Recept Signal Transduct Res 2018; 37:431-436. [PMID: 28812968 DOI: 10.1080/10799893.2017.1360353] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
CONTEXT Osteoarthritis (OA) is a common chronic degenerative joint disease resulting in physical disability and reduced quality of life. Different biochemical signaling pathways are involved in the progression of OA, including the c-Jun NH2-terminal kinase (JNK) signal transduction pathway. OBJECTIVE In this study, we have reviewed the recent updates on the association of JNK pathway with OA. METHODS In this review, we have explored the databases like PubMed, Google Scholar, Medline, Scopus, etc., and collected the most relevant papers of JNK signaling pathway involved in the pathogenesis and therapeutics of OA Results: JNK has been shown by scientific studies to be activated (phosphorylated) in OA that can play a key role in the cartilage destruction. Activation of JNK causes the phosphorylation of c-Jun that causes decreased proteoglycan synthesis and enhanced production of matrix metalloproteinase 13 (MMP-13). Overproduction of MMP-13 by chondrocytes plays a central role in cartilage degeneration in OA. Thus, targeting JNK pathway might be a promising therapeutic application for the prevention and treatment of OA. A number of JNK-inhibitors have been used in vitro and in vivo studies; however, not yet been translated into human use. CONCLUSIONS This review study indicates that JNK pathway plays an important role in development and progression of OA, and targeting the JNK pathway might be a potential approach for the treatment of OA in future.
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Affiliation(s)
- Hong-Xing Ge
- a Department of Orthopaedics , Second People's Hospital of Jingmen , Jingmen , China
| | - Fu-Man Zou
- a Department of Orthopaedics , Second People's Hospital of Jingmen , Jingmen , China
| | - Yan Li
- b Department of General Medicine , Second People's Hospital of Jingmen , Jingmen , China
| | - An-Min Liu
- a Department of Orthopaedics , Second People's Hospital of Jingmen , Jingmen , China
| | - Min Tu
- a Department of Orthopaedics , Second People's Hospital of Jingmen , Jingmen , China
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13
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Chen M, Guo W, Gao S, Hao C, Shen S, Zhang Z, Wang Z, Wang Z, Li X, Jing X, Zhang X, Yuan Z, Wang M, Zhang Y, Peng J, Wang A, Wang Y, Sui X, Liu S, Guo Q. Biochemical Stimulus-Based Strategies for Meniscus Tissue Engineering and Regeneration. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8472309. [PMID: 29581987 PMCID: PMC5822894 DOI: 10.1155/2018/8472309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/19/2017] [Indexed: 12/18/2022]
Abstract
Meniscus injuries are very common and still pose a challenge for the orthopedic surgeon. Meniscus injuries in the inner two-thirds of the meniscus remain incurable. Tissue-engineered meniscus strategies seem to offer a new approach for treating meniscus injuries with a combination of seed cells, scaffolds, and biochemical or biomechanical stimulation. Cell- or scaffold-based strategies play a pivotal role in meniscus regeneration. Similarly, biochemical and biomechanical stimulation are also important. Seed cells and scaffolds can be used to construct a tissue-engineered tissue; however, stimulation to enhance tissue maturation and remodeling is still needed. Such stimulation can be biomechanical or biochemical, but this review focuses only on biochemical stimulation. Growth factors (GFs) are one of the most important forms of biochemical stimulation. Frequently used GFs always play a critical role in normal limb development and growth. Further understanding of the functional mechanism of GFs will help scientists to design the best therapy strategies. In this review, we summarize some of the most important GFs in tissue-engineered menisci, as well as other types of biological stimulation.
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Affiliation(s)
- Mingxue Chen
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Weimin Guo
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Shunag Gao
- Center for Biomaterial and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, No. 5 Yiheyuan Road, Haidian District, Peking University, Beijing 100871, China
| | - Chunxiang Hao
- Institute of Anesthesiology, Chinese PLA General Hospital, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Shi Shen
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- Department of Bone and Joint Surgery, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Road, Luzhou 646000, China
| | - Zengzeng Zhang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- First Department of Orthopedics, First Affiliated Hospital of Jiamusi University, No. 348 Dexiang Road, Xiangyang District, Jiamusi 154002, China
| | - Zhenyong Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- First Department of Orthopedics, First Affiliated Hospital of Jiamusi University, No. 348 Dexiang Road, Xiangyang District, Jiamusi 154002, China
| | - Zehao Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Xu Li
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Xiaoguang Jing
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- First Department of Orthopedics, First Affiliated Hospital of Jiamusi University, No. 348 Dexiang Road, Xiangyang District, Jiamusi 154002, China
| | - Xueliang Zhang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
- Shanxi Traditional Chinese Hospital, No. 46 Binzhou West Street, Yingze District, Taiyuan 030001, China
| | - Zhiguo Yuan
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Mingjie Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Yu Zhang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Jiang Peng
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Aiyuan Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Yu Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Xiang Sui
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Shuyun Liu
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | - Quanyi Guo
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries, PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
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Abstract
Osteoarthritis is characterized by a chronic, progressive and irreversible degradation of the articular cartilage associated with joint inflammation and a reparative bone response. More than 100 million people are affected by this condition worldwide with significant health and welfare costs. Our available treatment options in osteoarthritis are extremely limited. Chondral or osteochondral grafts have shown some promising results but joint replacement surgery is by far the most common therapeutic approach. The difficulty lies on the limited regeneration capacity of the articular cartilage, poor blood supply and the paucity of resident progenitor stem cells. In addition, our poor understanding of the molecular signalling pathways involved in the senescence and apoptosis of chondrocytes is a major factor restricting further progress in the area. This review focuses on molecules and approaches that can be implemented to delay or even rescue chondrocyte apoptosis. Ways of modulating the physiologic response to trauma preventing chondrocyte death are proposed. The use of several cytokines, growth factors and advances made in altering several of the degenerative genetic pathways involved in chondrocyte apoptosis and degradation are also presented. The suggested approaches can help clinicians to improve cartilage tissue regeneration.
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Affiliation(s)
- Ippokratis Pountos
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK.
| | - Peter V Giannoudis
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK; NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, UK.
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15
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Kc R, Li X, Kroin JS, Liu Z, Chen D, Xiao G, Levine B, Li J, Hamilton JL, van Wijnen AJ, Piel M, Shelly DA, Brass D, Kolb E, Im HJ. PKCδ null mutations in a mouse model of osteoarthritis alter osteoarthritic pain independently of joint pathology by augmenting NGF/TrkA-induced axonal outgrowth. Ann Rheum Dis 2016; 75:2133-2141. [PMID: 26783110 PMCID: PMC5136703 DOI: 10.1136/annrheumdis-2015-208444] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/10/2015] [Accepted: 12/14/2015] [Indexed: 01/23/2023]
Abstract
OBJECTIVES A key clinical paradox in osteoarthritis (OA), a prevalent age-related joint disorder characterised by cartilage degeneration and debilitating pain, is that the severity of joint pain does not strictly correlate with radiographic and histological defects in joint tissues. Here, we determined whether protein kinase Cδ (PKCδ), a key mediator of cartilage degeneration, is critical to the mechanism by which OA develops from an asymptomatic joint-degenerative condition to a painful disease. METHODS OA was induced in 10-week-old PKCδ null (PKCδ-/-) and wild-type mice by destabilisation of the medial meniscus (DMM) followed by comprehensive examination of the histology, molecular pathways and knee-pain-related-behaviours in mice, and comparisons with human biopsies. RESULTS In the DMM model, the loss of PKCδ expression prevented cartilage degeneration but exacerbated OA-associated hyperalgesia. Cartilage preservation corresponded with reduced levels of inflammatory cytokines and of cartilage-degrading enzymes in the joints of PKCδ-deficient DMM mice. Hyperalgesia was associated with stimulation of nerve growth factor (NGF) by fibroblast-like synovial cells and with increased synovial angiogenesis. Results from tissue specimens of patients with symptomatic OA strikingly resembled our findings from the OA animal model. In PKCδ null mice, increases in sensory neuron distribution in knee OA synovium and activation of the NGF-tropomyosin receptor kinase (TrkA) axis in innervating dorsal root ganglia were highly correlated with knee OA hyperalgesia. CONCLUSIONS Increased distribution of synovial sensory neurons in the joints, and augmentation of NGF/TrkA signalling, causes OA hyperalgesia independently of cartilage preservation.
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Affiliation(s)
- Ranjan Kc
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Xin Li
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Jeffrey S Kroin
- Department of Anesthesiology, Rush University Medical Center, Chicago, Illinois, USA
| | - Zhiqiang Liu
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Di Chen
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Guozhi Xiao
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
- Department of Biology and Shenzhen Key Laboratory of Cell Microenvironment, South University of Science and Technology of China, Shenzhen, China
| | - Brett Levine
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Jinyuan Li
- Department of Anesthesiology, Rush University Medical Center, Chicago, Illinois, USA
| | - John L Hamilton
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Andre J van Wijnen
- Departments of Orthopedic Surgery & Biochemistry & Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Margaret Piel
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | | | | | - Ela Kolb
- Alomone Labs Ltd, Jerusalem, Israel
| | - Hee-Jeong Im
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
- Department of Internal Medicine (Section of Rheumatology), Rush University Medical Center, Chicago, Illinois, USA
- Department of Bioengineering, University of Illinois at Chicago, Illinois, USA
- Jesse Brown Veterans Affairs Medical Center at Chicago, Illinois, USA
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16
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Hyc A, Moskalewski S, Osiecka-Iwan A. Influence of cartilage interstitial fluid on the mRNA levels of matrix proteins, cytokines, metalloproteases and their inhibitors in synovial membrane. Int J Mol Med 2016; 38:937-42. [PMID: 27430724 DOI: 10.3892/ijmm.2016.2684] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 06/16/2016] [Indexed: 11/06/2022] Open
Abstract
Articular cartilage and the synovial membrane both ensure the smooth action of synovial joints; however, the influence of chondrocytes on synovial metabolism remains unclear. The secretory activity of chondrocytes is usually studied in cell cultures and may differ from that in intact cartilage. According to McCutchen's theory of 'weeping' joint lubrication, loading of the articular cartilage during motion squeezes the fluid with lubricating properties from the cartilage. The purpose of the study was to obtain cartilage interstitial fluid (CIF) from intact cartilage and to evaluate its influence on gene expression in the synovial membrane cells. CIF was rinsed out from the cartilage of newborn rats at a pressure of three bar. The chondrocytes survived rinsing and grew in culture. Cytokines in CIF were detected using the enzyme-linked immunosorbent assay (ELISA). The influence of CIF and CIF-like cocktail (all cytokines found in CIF) on gene expression in the synovial membrane cells was studied after a 4 h-incubation, by real-time PCR. Data were analyzed using the Wilcoxon matched-pair test or by the Mann‑Whitney U test. CIF contained basic fibroblast growth factor (bFGF), insulin-like growth factor (IGF)‑1, transforming growth factor β1 (TGFβ1), bone morphogenetic protein 7 (BMP7), macrophage (M)-colony-stimulating factor (CSF), granulocyte (G)-CSF and leukemia inhibitory factor (LIF). CIF stimulated the expression of hyaluronan synthase (HAS)1 and 2, lubricin, collagen I, versican, aggrecan, matrix metalloproteinases (MMPs)2 and 3, tissue inhibitors of metalloproteinases (TIMPs) 1-3, interleukin (IL)-6 and TGFβ1, and decreased the expression of tumor necrosis factor (TNF) and IL-1β. Incubation of the synovial membrane with CIF-like cocktail partially imitated the effects of CIF. Analysis of CIF composition may help to characterize the secretory activity of chondrocytes in their natural environment under various physiological and pathological conditions and to understand the interactions between articular cartilage and the synovial membrane.
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Affiliation(s)
- Anna Hyc
- Department of Histology and Embryology, Medical University of Warsaw, PL-02004 Warsaw, Poland
| | - Stanislaw Moskalewski
- Department of Histology and Embryology, Medical University of Warsaw, PL-02004 Warsaw, Poland
| | - Anna Osiecka-Iwan
- Department of Histology and Embryology, Medical University of Warsaw, PL-02004 Warsaw, Poland
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17
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Xu W, Xie Y, Wang Q, Wang X, Luo F, Zhou S, Wang Z, Huang J, Tan Q, Jin M, Qi H, Tang J, Chen L, Du X, Zhao C, Liang G, Chen L. A novel fibroblast growth factor receptor 1 inhibitor protects against cartilage degradation in a murine model of osteoarthritis. Sci Rep 2016; 6:24042. [PMID: 27041213 PMCID: PMC4819196 DOI: 10.1038/srep24042] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 03/21/2016] [Indexed: 12/22/2022] Open
Abstract
The attenuated degradation of articular cartilage by cartilage-specific deletion of fibroblast growth factor receptor 1 (FGFR1) in adult mice suggests that FGFR1 is a potential target for treating osteoarthritis (OA). The goal of the current study was to investigate the effect of a novel non-ATP-competitive FGFR1 inhibitor, G141, on the catabolic events in human articular chondrocytes and cartilage explants and on the progression of cartilage degradation in a murine model of OA. G141 was screened and identified via cell-free kinase-inhibition assay. In the in vitro study, G141 decreased the mRNA levels of catabolic markers ADAMTS-5 and MMP-13, the phosphorylation of Erk1/2, JNK and p38 MAPK, and the protein level of MMP-13 in human articular chondrocytes. In the ex vivo study, proteoglycan loss was markedly reduced in G141 treated human cartilage explants. For the in vivo study, intra-articular injection of G141 attenuated the surgical destabilization of the medial meniscus (DMM) induced cartilage destruction and chondrocyte hypertrophy and apoptosis in mice. Our data suggest that pharmacologically antagonize FGFR1 using G141 protects articular cartilage from osteoarthritic changes, and intra-articular injection of G141 is potentially an effective therapy to alleviate OA progression.
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Affiliation(s)
- Wei Xu
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Yangli Xie
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Quan Wang
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Xiaofeng Wang
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Fengtao Luo
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Siru Zhou
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Zuqiang Wang
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Junlan Huang
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Qiaoyan Tan
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Min Jin
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Huabing Qi
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Junzhou Tang
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Liang Chen
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Xiaolan Du
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Chengguang Zhao
- Institute of Biological and Natural Medicine, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325035, China
| | - Guang Liang
- Institute of Biological and Natural Medicine, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325035, China
| | - Lin Chen
- Department of Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
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18
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Kwon H, Paschos NK, Hu JC, Athanasiou K. Articular cartilage tissue engineering: the role of signaling molecules. Cell Mol Life Sci 2016; 73:1173-94. [PMID: 26811234 PMCID: PMC5435375 DOI: 10.1007/s00018-015-2115-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/23/2015] [Accepted: 12/10/2015] [Indexed: 02/08/2023]
Abstract
Effective early disease modifying options for osteoarthritis remain lacking. Tissue engineering approach to generate cartilage in vitro has emerged as a promising option for articular cartilage repair and regeneration. Signaling molecules and matrix modifying agents, derived from knowledge of cartilage development and homeostasis, have been used as biochemical stimuli toward cartilage tissue engineering and have led to improvements in the functionality of engineered cartilage. Clinical translation of neocartilage faces challenges, such as phenotypic instability of the engineered cartilage, poor integration, inflammation, and catabolic factors in the arthritic environment; these can all contribute to failure of implanted neocartilage. A comprehensive understanding of signaling molecules involved in osteoarthritis pathogenesis and their actions on engineered cartilage will be crucial. Thus, while it is important to continue deriving inspiration from cartilage development and homeostasis, it has become increasingly necessary to incorporate knowledge from osteoarthritis pathogenesis into cartilage tissue engineering.
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Affiliation(s)
- Heenam Kwon
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Nikolaos K Paschos
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Jerry C Hu
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Kyriacos Athanasiou
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.
- Department of Orthopaedic Surgery, University of California Davis Medical Center, Sacramento, CA, USA.
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19
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Nummenmaa E, Hämäläinen M, Moilanen T, Vuolteenaho K, Moilanen E. Effects of FGF-2 and FGF receptor antagonists on MMP enzymes, aggrecan, and type II collagen in primary human OA chondrocytes. Scand J Rheumatol 2015; 44:321-30. [PMID: 25743336 DOI: 10.3109/03009742.2014.1000372] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Fibroblast growth factor (FGF)-2 is a member of the FGF family and is found in the synovial fluid of patients with osteoarthritis (OA). The aim of this study was to investigate the effects of FGF-2 on human OA cartilage/chondrocytes by examining the association between FGF-2 and the cartilage degrading enzymes matrix metalloproteinase (MMP)-1 and MMP-13 and the major cartilage matrix components aggrecan and collagen II. METHOD Cartilage samples were obtained from 97 OA patients undergoing total knee replacement surgery. Cartilage tissue cultures were conducted and levels of FGF-2, MMP-1, and MMP-13 released into the culture medium were measured by immunoassay. The effects of FGF-2 on the expression of MMP-1, MMP-13, aggrecan, and collagen II were further investigated in cultures of primary human OA chondrocytes. RESULTS FGF-2, MMP-1, and MMP-13 were released into the culture medium from cartilage samples obtained from patients with OA. FGF-2 concentrations correlated positively with the concentrations of MMP-1 (r = 0.414, p < 0.001) and MMP-13 (r = 0.362, p < 0.001). FGF-2 also up-regulated the production of MMP-1 and MMP-13, and down-regulated the expression of aggrecan and collagen II, in human OA chondrocyte cultures. Furthermore, FGF receptor antagonists AZD4547 and NVP-BGJ398 down-regulated the expression of MMP-1 and MMP-13 and up-regulated aggrecan and collagen II both in the absence and in the presence of exogenous FGF-2. CONCLUSIONS Our results suggest that, in contrast to its growth factor-like effects in some other tissues, FGF-2 induces catabolic effects in human OA cartilage. Moreover, FGF receptor antagonists showed promising beneficial effects on the balance of catabolic and anabolic factors within OA cartilage.
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Affiliation(s)
- E Nummenmaa
- The Immunopharmacology Research Group, University of Tampere School of Medicine and Tampere University Hospital , Tampere , Finland
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20
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Schmal H, Pilz IH, Henkelmann R, Salzmann GM, Südkamp NP, Niemeyer P. Association between intraarticular cytokine levels and clinical parameters of osteochondritis dissecans in the ankle. BMC Musculoskelet Disord 2014; 15:169. [PMID: 24885831 PMCID: PMC4037745 DOI: 10.1186/1471-2474-15-169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 05/06/2014] [Indexed: 12/25/2022] Open
Abstract
Background Reliable data about in vivo regulation of cytokines in osteochondritis dissecans (OCD) of the ankle are still missing. Disease-specific regulation patterns were hypothesized. Methods 28 patients with a mean age of 30.7 ± 14.8 years undergoing an arthroscopy of the ankle because of OCD were prospectively included in a clinical trial. Lavage fluids were analyzed by ELISA for levels of aggrecan, BMP-2, BMP-7, IGF-1, IGF-1R, bFGF, endoglin, MMP-13, and IL-1β. Additionally, clinical parameters and scores (FFI, CFSS, AOFAS) were evaluated and supplemented by the Kellgren Lawrence Score (KLS) for conventional X-rays and the Ankle Osteoarthritis Scoring System (AOSS) for MRI. Results Grading of OCD lesions statistically significant increased with age and was higher in case of previously performed operations (p < 0.03). A worse clinical function reflected by low AOFAS and CFSS scores or high FFI was associated with high grading of cartilage damage or OCD (p < 0.03). Similarly, high radiological scores (KLS and AOSS) indicating progress of OA positively correlated with grading of cartilage damage and OCD. The concordance between the MRI and arthroscopic classification was overall moderate (κ = 0.52). Biochemically, only IGF/IGF-1R levels were consistently negatively associated with OCD grading, ICRS score, FFI and KLS (p < 0.05). Correlation data is supported by post hoc statistics. Conclusions Radiological and clinical parameters in association with synovial IGF-1/IGF-1R levels indicated an increasing joint degeneration with rising OCD stage. Trial registration German Clinical Trials Register
DRKS00000365, 11/03/2008.
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Affiliation(s)
- Hagen Schmal
- Department of Orthopaedic Surgery, University of Freiburg Medical Center, Hugstetter Str, 55, D-79106, Freiburg, Germany.
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Early intra-articular complement activation in ankle fractures. BIOMED RESEARCH INTERNATIONAL 2014; 2014:426893. [PMID: 24967368 PMCID: PMC4055461 DOI: 10.1155/2014/426893] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 04/29/2014] [Indexed: 01/13/2023]
Abstract
Cytokine regulation possibly influences long term outcome following ankle fractures, but little is known about synovial fracture biochemistry. Eight patients with an ankle dislocation fracture were included in a prospective case series and matched with patients suffering from grade 2 osteochondritis dissecans (OCD) of the ankle. All fractures needed external fixation during which joint effusions were collected. Fluid analysis was done by ELISA measuring aggrecan, bFGF, IL-1β, IGF-1, and the complement components C3a, C5a, and C5b-9. The time periods between occurrence of fracture and collection of effusion were only significantly associated with synovial aggrecan and C5b-9 levels (P < 0.001). Furthermore, synovial expressions of both proteins correlated with each other (P < 0.001). Although IL-1β expression was relatively low, intra-articular levels correlated with C5a (P < 0.01) and serological C-reactive protein concentrations 2 days after surgery (P < 0.05). Joint effusions were initially dominated by neutrophils, but the portion of monocytes constantly increased reaching 50% at day 6 after fracture (P < 0.02). Whereas aggrecan and IL-1β concentrations were not different in fracture and OCD patients, bFGF, IGF-1, and all complement components were significantly higher concentrated in ankle joints with fractures (P < 0.01). Complement activation and inflammatory cell infiltration characterize the joint biology following acute ankle fractures.
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22
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Signaling pathways in cartilage repair. Int J Mol Sci 2014; 15:8667-98. [PMID: 24837833 PMCID: PMC4057753 DOI: 10.3390/ijms15058667] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/28/2014] [Accepted: 05/04/2014] [Indexed: 12/29/2022] Open
Abstract
In adult healthy cartilage, chondrocytes are in a quiescent phase characterized by a fine balance between anabolic and catabolic activities. In ageing, degenerative joint diseases and traumatic injuries of cartilage, a loss of homeostatic conditions and an up-regulation of catabolic pathways occur. Since cartilage differentiation and maintenance of homeostasis are finely tuned by a complex network of signaling molecules and biophysical factors, shedding light on these mechanisms appears to be extremely relevant for both the identification of pathogenic key factors, as specific therapeutic targets, and the development of biological approaches for cartilage regeneration. This review will focus on the main signaling pathways that can activate cellular and molecular processes, regulating the functional behavior of cartilage in both physiological and pathological conditions. These networks may be relevant in the crosstalk among joint compartments and increased knowledge in this field may lead to the development of more effective strategies for inducing cartilage repair.
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Biochemical characterization of early osteoarthritis in the ankle. ScientificWorldJournal 2014; 2014:434802. [PMID: 24696644 PMCID: PMC3947760 DOI: 10.1155/2014/434802] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 01/06/2014] [Indexed: 01/18/2023] Open
Abstract
Purpose. Reliable data about in vivo regulation of cytokines in early ankle osteoarthritis (OA) are still missing. Methods. 49 patients with a mean age of 33 ± 14 years undergoing an arthroscopy of the ankle with different stages of chronic OA were prospectively included in a clinical trial. Lavage fluids were analyzed by ELISA. Additionally, clinical parameters and scores (FFI, CFSS, and AOFAS) were evaluated and supplemented by the Kellgren Lawrence Score (KLS) and the ankle osteoarthritis scoring system (AOSS). Results. ICRS grading of cartilage damage, previous operations, and duration of complains were strong indicators for OA progress and showed correlations to age, clinical scores, validated KLS, and AOSS (P < 0.04). Systemic and intraarticular inflammatory parameters were low in all patients. Biochemically, aggrecan and BMP-7 positively indicated OA with statistically significant associations with duration of symptoms, FFI, AOFAS, and KLS (P < 0.04). In contrast, BMP-2 levels showed statistically significant negative correlations to aggrecan or BMP-7 concentrations, which is in line with the negative association with ICRS score and KLS and the positive correlation with FFI (P < 0.03). Conclusions. We were able to identify different key markers of OA in the ankle as aggrecan, BMP-7, and BMP-2, offering starting points for new ways in diagnostics and interventional strategies.
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Loeser RF. Osteoarthritis year in review 2013: biology. Osteoarthritis Cartilage 2013; 21:1436-42. [PMID: 23774472 PMCID: PMC3779513 DOI: 10.1016/j.joca.2013.05.020] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/20/2013] [Accepted: 05/27/2013] [Indexed: 02/02/2023]
Abstract
The purpose of this review was to present highlights from the published literature on the topic of the biology of osteoarthritis (OA). A PubMed search was conducted in order to locate original research manuscripts published since the last OARSI meeting in 2012. From review of the published literature, common themes emerged as active areas of research over the past year including studies in the areas of epigenetics, Wnt signaling, the role of inflammatory pathways in OA, lubricin, fibroblast growth factor signaling, and studies on OA biology in bone. Key findings in these areas were summarized and implications for future therapies were discussed.
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Affiliation(s)
- R F Loeser
- Department of Internal Medicine, Section of Molecular Medicine and The Wake Forest Arthritis and Musculoskeletal Diseases Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USA.
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Ellman MB, Yan D, Ahmadinia K, Chen D, An HS, Im HJ. Fibroblast growth factor control of cartilage homeostasis. J Cell Biochem 2013; 114:735-42. [PMID: 23060229 DOI: 10.1002/jcb.24418] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 10/01/2012] [Indexed: 12/11/2022]
Abstract
Osteoarthritis (OA) and degenerative disc disease (DDD) are similar diseases involving the breakdown of cartilage tissue, and a better understanding of the underlying biochemical processes involved in cartilage degeneration may allow for the development of novel biologic therapies aimed at slowing the disease process. Three members of the fibroblast growth factor (FGF) family, FGF-2, FGF-18, and FGF-8, have been implicated as contributing factors in cartilage homeostasis. The role of FGF-2 is controversial in both articular and intervertebral disc (IVD) cartilage as it has been associated with species- and age-dependent anabolic or catabolic events. Recent evidence suggests that FGF-2 selectively activates FGF receptor 1 (FGFR1) to exert catabolic effects in human articular chondrocytes and IVD tissue via upregulation of matrix-degrading enzyme production, inhibition of extracellular matrix (ECM) accumulation and proteoglycan synthesis, and clustering of cells characteristic of arthritic states. FGF-18, on the other hand, most likely exerts anabolic effects in human articular chondrocytes by activating the FGFR3 pathway, inducing ECM formation and chondrogenic cell differentiation, and inhibiting cell proliferation. These changes result in dispersed chondrocytes or disc cells surrounded by abundant matrix. The role of FGF-8 has recently been identified as a catabolic mediator in rat and rabbit articular cartilage, but its precise biological impact on human adult articular cartilage or IVD tissue remains unknown. The available evidence reveals the promise of FGF-2/FGFR1 antagonists, FGF-18/FGFR3 agonists, and FGF-8 antagonists (i.e., anti-FGF-8 antibody) as potential therapies to prevent cartilage degeneration and/or promote cartilage regeneration and repair in the future.
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Affiliation(s)
- M B Ellman
- Department of Biochemistry, Section of Rheumatology, Rush University Medical Center, Chicago, Illinois 60612, USA
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Lee A, Ellman MB, Yan D, Kroin JS, Cole BJ, van Wijnen AJ, Im HJ. A current review of molecular mechanisms regarding osteoarthritis and pain. Gene 2013; 527:440-7. [PMID: 23830938 PMCID: PMC3745800 DOI: 10.1016/j.gene.2013.05.069] [Citation(s) in RCA: 285] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 05/27/2013] [Indexed: 01/19/2023]
Abstract
Osteoarthritis afflicts millions of individuals across the world resulting in impaired quality of life and increased health costs. To understand this disease, physicians have been studying risk factors, such as genetic predisposition, aging, obesity, and joint malalignment; however have been unable to conclusively determine the direct etiology. Current treatment options are short-term or ineffective and fail to address pathophysiological and biochemical mechanisms involved with cartilage degeneration and the induction of pain in arthritic joints. OA pain involves a complex integration of sensory, affective, and cognitive processes that integrate a variety of abnormal cellular mechanisms at both peripheral and central (spinal and supraspinal) levels of the nervous system Through studies examined by investigators, the role of growth factors and cytokines has increasingly become more relevant in examining their effects on articular cartilage homeostasis and the development of osteoarthritis and osteoarthritis-associated pain. Catabolic factors involved in both cartilage degradation in vitro and nociceptive stimulation include IL-1, IL-6, TNF-α, PGE2, FGF-2 and PKCδ, and pharmacologic inhibitors to these mediators, as well as compounds such as RSV and LfcinB, may potentially be used as biological treatments in the future. This review explores several biochemical mediators involved in OA and pain, and provides a framework for the understanding of potential biologic therapies in the treatment of degenerative joint disease in the future.
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Affiliation(s)
- Andrew Lee
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
| | - Michael B Ellman
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
| | - Dongyao Yan
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Jeffrey S Kroin
- Department of Anesthesiology, Rush University Medical Center, Chicago, IL 60612
| | - Brian J Cole
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
| | - Andre J. van Wijnen
- Department of Orthopedic Surgery & Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN 55905
| | - Hee-Jeong Im
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
- Department of Internal Medicine, Section of Rheumatology, Rush University Medical Center, Chicago, IL 60612
- Department of Bioengineering, University of Illinois, Chicago, IL 60612
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Shi S, Mercer S, Eckert GJ, Trippel SB. Growth factor transgenes interactively regulate articular chondrocytes. J Cell Biochem 2013; 114:908-19. [PMID: 23097312 DOI: 10.1002/jcb.24430] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 10/15/2012] [Indexed: 12/26/2022]
Abstract
Adult articular chondrocytes lack an effective repair response to correct damage from injury or osteoarthritis. Polypeptide growth factors that stimulate articular chondrocyte proliferation and cartilage matrix synthesis may augment this response. Gene transfer is a promising approach to delivering such factors. Multiple growth factor genes regulate these cell functions, but multiple growth factor gene transfer remains unexplored. We tested the hypothesis that multiple growth factor gene transfer selectively modulates articular chondrocyte proliferation and matrix synthesis. We tested the hypothesis by delivering combinations of the transgenes encoding insulin-like growth factor I (IGF-I), fibroblast growth factor-2 (FGF-2), transforming growth factor beta1 (TGF-β1), bone morphogenetic protein-2 (BMP-2), and bone morphogenetic protien-7 (BMP-7) to articular chondrocytes and measured changes in the production of DNA, glycosaminoglycan, and collagen. The transgenes differentially regulated all these chondrocyte activities. In concert, the transgenes interacted to generate widely divergent responses from the cells. These interactions ranged from inhibitory to synergistic. The transgene pair encoding IGF-I and FGF-2 maximized cell proliferation. The three-transgene group encoding IGF-I, BMP-2, and BMP-7 maximized matrix production and also optimized the balance between cell proliferation and matrix production. These data demonstrate an approach to articular chondrocyte regulation that may be tailored to stimulate specific cell functions, and suggest that certain growth factor gene combinations have potential value for cell-based articular cartilage repair.
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Affiliation(s)
- Shuiliang Shi
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana 46202-5111
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Kim JS, Ellman MB, Yan D, An HS, Kc R, Li X, Chen D, Xiao G, Cs-Szabo G, Hoskin DW, Buechter DD, Van Wijnen AJ, Im HJ. Lactoferricin mediates anti-inflammatory and anti-catabolic effects via inhibition of IL-1 and LPS activity in the intervertebral disc. J Cell Physiol 2013; 228:1884-96. [PMID: 23460134 DOI: 10.1002/jcp.24350] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Accepted: 02/08/2013] [Indexed: 12/11/2022]
Abstract
The catabolic cytokine interleukin-1 (IL-1) and endotoxin lipopolysaccharide (LPS) are well-known inflammatory mediators involved in degenerative disc disease, and inhibitors of IL-1 and LPS may potentially be used to slow or prevent disc degeneration in vivo. Here, we elucidate the striking anti-catabolic and anti-inflammatory effects of bovine lactoferricin (LfcinB) in the intervertebral disc (IVD) via antagonism of both IL-1 and LPS-mediated catabolic activity using in vitro and ex vivo analyses. Specifically, we demonstrate the biological counteraction of LfcinB against IL-1 and LPS-mediated proteoglycan (PG) depletion, matrix-degrading enzyme production, and enzyme activity in long-term (alginate beads) and short-term (monolayer) culture models using bovine and human nucleus pulposus (NP) cells. LfcinB significantly attenuates the IL-1 and LPS-mediated suppression of PG production and synthesis, and thus restores PG accumulation and pericellular matrix formation. Simultaneously, LfcinB antagonizes catabolic factor mediated induction of multiple cartilage-degrading enzymes, including MMP-1, MMP-3, MMP-13, ADAMTS-4, and ADAMTS-5, in bovine NP cells at both mRNA and protein levels. LfcinB also suppresses the catabolic factor-induced stimulation of oxidative and inflammatory factors such as iNOS, IL-6, and toll-like receptor-2 (TLR-2) and TLR-4. Finally, the ability of LfcinB to antagonize IL-1 and LPS-mediated suppression of PG is upheld in an en bloc intradiscal microinjection model followed by ex vivo organ culture using both mouse and rabbit IVD tissue, suggesting a potential therapeutic benefit of LfcinB on degenerative disc disease in the future.
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Affiliation(s)
- Jae-Sung Kim
- Section of Rheumatology, Department of Biochemistry, Rush University Medical Center, Chicago, Illinois 60612, USA
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Garza-Veloz I, Romero-Diaz VJ, Martinez-Fierro ML, Marino-Martinez IA, Gonzalez-Rodriguez M, Martinez-Rodriguez HG, Espinoza-Juarez MA, Bernal-Garza DA, Ortiz-Lopez R, Rojas-Martinez A. Analyses of chondrogenic induction of adipose mesenchymal stem cells by combined co-stimulation mediated by adenoviral gene transfer. Arthritis Res Ther 2013; 15:R80. [PMID: 23899094 PMCID: PMC3978573 DOI: 10.1186/ar4260] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Accepted: 07/30/2013] [Indexed: 12/20/2022] Open
Abstract
Introduction Adipose-derived stem cells (ASCs) have the potential to differentiate into cartilage under stimulation with some reported growth and transcriptional factors, which may constitute an alternative for cartilage replacement approaches. In this study, we analyzed the in vitro chondrogenesis of ASCs transduced with adenoviral vectors encoding insulin-like growth factor-1 (IGF-1), transforming growth factor beta-1 (TGF-β1), fibroblast growth factor-2 (FGF-2), and sex-determining region Y-box 9 (SOX9) either alone or in combinations. Methods Aggregate cultures of characterized ovine ASCs were transduced with 100 multiplicity of infections of Ad.IGF-1, Ad.TGF-β1, Ad.FGF-2, and Ad.SOX9 alone or in combination. These were harvested at various time points for detection of cartilage-specific genes expression by quantitative real-time PCR or after 14 and 28 days for histologic and biochemical analyses detecting proteoglycans, collagens (II, I and X), and total sulfated glycosaminoglycan and collagen content, respectively. Results Expression analyses showed that co-expression of IGF-1 and FGF-2 resulted in higher significant expression levels of aggrecan, biglycan, cartilage matrix, proteoglycan, and collagen II (all P ≤0.001 at 28 days). Aggregates co-transduced with Ad.IGF-1/Ad.FGF-2 showed a selective expression of proteoglycans and collagen II, with limited expression of collagens I and × demonstrated by histological analyses, and had significantly greater glycosaminoglycan and collagen production than the positive control (P ≤0.001). Western blot analyses for this combination also demonstrated increased expression of collagen II, while expression of collagens I and × was undetectable and limited, respectively. Conclusion Combined overexpression of IGF-1/FGF-2 within ASCs enhances their chondrogenic differentiation inducing the expression of chondrogenic markers, suggesting that this combination is more beneficial than the other factors tested for the development of cell-based therapies for cartilage repair.
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Ellman MB, Kim J, An HS, Chen D, Kc R, Li X, Xiao G, Yan D, Suh J, van Wijnen AJ, Wang JHC, Kim SG, Im HJ. Lactoferricin enhances BMP7-stimulated anabolic pathways in intervertebral disc cells. Gene 2013; 524:282-91. [PMID: 23644135 PMCID: PMC3679319 DOI: 10.1016/j.gene.2013.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 04/01/2013] [Accepted: 04/03/2013] [Indexed: 01/07/2023]
Abstract
Bone-morphogenetic protein-7 (BMP7) is a well-known anabolic and anti-catabolic growth factor on intervertebral disc (IVD) matrix and cell homeostasis. Similarly, Lactoferricin B (LfcinB) has recently been shown to have pro-anabolic, anti-catabolic, anti-oxidative and/or anti-inflammatory effects in bovine disc cells in vitro. In this study, we investigated the potential benefits of using combined peptide therapy with LfcinB and BMP7 for intervertebral disc matrix repair and to understand cellular and signaling mechanisms controlled by these factors. We studied the effects of BMP7 and LfcinB as individual treatments and combined therapy on bovine nucleus pulposus (NP) cells by assessing proteoglycan (PG) accumulation and synthesis, and the gene expression of matrix protein aggrecan and transcription factor SOX-9. We also analyzed the role of Noggin, a BMP antagonist, in IVD tissue and examined its effect after stimulation with LfcinB. To understand the molecular mechanisms by which LfcinB synergizes with BMP7, we investigated the ERK-SP1 axis as a downstream intracellular signaling regulator involved in BMP7 and LfcinB-mediated activities. Treatment of bovine NP cells cultured in alginate with LfcinB plus BMP7 synergistically stimulates PG synthesis and accumulation in part by upregulation of aggrecan gene expression. The synergism results from LfcinB-mediated activation of Sp1 and SMAD signaling pathways by (i) phosphorylation of SMAD 1/5/8; (ii) downregulation of SMAD inhibitory factors [i.e., noggin and SMAD6 (inhibitory SMAD)]; and (iii) upregulation of SMAD4 (universal co-SMAD). These data indicate that LfcinB-suppression of Noggin may eliminate the negative feedback of BMP7, thereby maximizing biological activity of BMP7 and ultimately shifting homeostasis to a pro-anabolic state in disc cells. We propose that combination growth factor therapy using BMP7 and LfcinB may be beneficial for treatment of disc degeneration.
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Affiliation(s)
- Michael B Ellman
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
| | - Jaesung Kim
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Howard S An
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
| | - Di Chen
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Ranjan Kc
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Xin Li
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Guozhi Xiao
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Dongyao Yan
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Joon Suh
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
| | - Andre J. van Wijnen
- Center of Regenerative Medicine and Departments of Orthopedic Surgery & Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN 55905
| | - James H-C Wang
- MechanoBiology Laboratory, Departments of Orthopedic Surgery and Bioengineering, University of Pittsburgh, PA 15213, USA
| | - Su-Gwan Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, GwangJu City, Republic of Korea, 501-759
| | - Hee-Jeong Im
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612
- Department of Internal Medicine, Section of Rheumatology, Rush University Medical Center, Chicago, IL 60612
- Department of Bioengineering, University of Illinois at Chicago, IL 60612
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Mori H, Kondo E, Kawaguchi Y, Kitamura N, Nagai N, Iida H, Yasuda K. Development of a salmon-derived crosslinked atelocollagen sponge disc containing osteogenic protein-1 for articular cartilage regeneration: in vivo evaluations with rabbits. BMC Musculoskelet Disord 2013; 14:174. [PMID: 23721417 PMCID: PMC3702415 DOI: 10.1186/1471-2474-14-174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 05/21/2013] [Indexed: 11/10/2022] Open
Abstract
Background We have developed crosslinked salmon-derived atelocollagen sponge, which has a denaturation temperature of 47 degrees Celsius. The purpose of this study is to evaluate the fundamental in vivo efficacy of the osteogenic protein (OP) -1 containing salmon-derived collagen sponge disc (SCS) on cartilage regeneration, using a rabbit model. Methods A total of 24 rabbits were used in this study. In each animal, a full-thickness osteochondral defect was created in each femoral trochlea. Then, each 12 rabbits were randomly divided into the two groups. In Group I, an OP1-SCS disc was implanted into the defect in the right knee. In Group II, a SCS disc without OP-1 was implanted into the defect in the right knee. A control group of 12 rabbits was assembled from randomly-selected left knees from among the first two groups. In Group-III, we applied no treatment for a defect in the left knee to obtain the untreated control. All rabbits were sacrificed at 12 weeks after surgery. In each group, 10 animals were used for histological and immunohistological evaluations, and the remaining 2 were used for real-time polymerase chain reaction (PCR) analyses. Results In Group I, a regenerated cartilage tissue rich in proteoglycan and type-2 collagen was found at 12 weeks, although the width was thicker than that of Group II. In Group II, the defect was filled with thick inhomogeneous tissues, including cartilage, fibrous, and bone tissues at 12 weeks. Concerning the gross observation and histological scores at 12 weeks, the ANOVA showed significant differences (p < 0.0001, and p < 0.0001, respectively). The post-hoc test indicated that the gross observation and histological scores of Group I was significantly greater than those of Groups II (p = 0.035, and p = 0.0104, respectively) and III (p < 0.0001, and p < 0.0001, respectively), while Group II was significantly greater than Group III (p = 0.0069, and p = 0.005, respectively). The real time PCR analysis showed that gene expression of type-2 collagen and aggrecan of Group I was greater than that of Group II. Conclusions The present study clearly demonstrated that the implantation of the OP1-SCS disc without any cultured cells may induce spontaneous hyaline-like cartilage regeneration to greater degrees than implantation of only the salmon-derived collagen sponge disc.
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Shi S, Mercer S, Eckert GJ, Trippel SB. Growth factor regulation of growth factor production by multiple gene transfer to chondrocytes. Growth Factors 2013; 31:32-8. [PMID: 23302100 PMCID: PMC3976180 DOI: 10.3109/08977194.2012.750652] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Of the many classes of molecules regulated by growth factors, growth factors themselves are not well investigated. We tested the hypothesis that combinations of endogenous growth factors interactively regulate the production of other growth factors. Growth factors have therapeutic potential for articular cartilage repair, and gene transfer is a promising approach to growth factor delivery. We tested the hypothesis using adult bovine articular chondrocytes treated with combinations of cDNAs encoding insulin-like growth factor I, bone morphogenetic protein-2 and protein-7, transforming growth factor β1, and fibroblast growth factor 2. We found that these growth factor transgenes regulated each other's growth factor production. This regulation ranged from stimulation to inhibition. Regulation by multiple transgenes was not predictable from the regulatory actions of the individual transgenes. Such interactions may be important for the selection of growth factor genes for cell-based therapies, including articular cartilage repair.
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Affiliation(s)
- Shuiliang Shi
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN 46202-5111, USA
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Pulsatelli L, Addimanda O, Brusi V, Pavloska B, Meliconi R. New findings in osteoarthritis pathogenesis: therapeutic implications. Ther Adv Chronic Dis 2013; 4:23-43. [PMID: 23342245 DOI: 10.1177/2040622312462734] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This review focuses on the new perspectives which can provide insight into the crucial pathways that drive cartilage-bone physiopathology. In particular, we discuss the critical signaling and effector molecules that can activate cellular and molecular processes in both cartilage and bone cells and which may be relevant in cross talk among joint compartments: growth factors (bone morphogenetic proteins and transforming growth factor), hypoxia-related factors, cell-matrix interactions [discoidin domain receptor 2 (DDR2) and syndecan 4], signaling molecules [WNT, Hedgehog (Hh)]. With the continuous progression of our knowledge on the molecular pathways involved in cartilage and bone changes in osteoarthritis (OA), an increasing number of potentially effective candidates for OA therapy are already under scrutiny in clinical trials to ascertain their possible safe use in an attempt to identify molecules active in slowing or halting OA progression and reducing joint pain. We then review the principal molecules currently under clinical investigation.
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Affiliation(s)
- Lia Pulsatelli
- Laboratory of Immunorheumatology and Tissue Regeneration/RAMSES, Rizzoli Orthopaedic Institute, Bologna, Italy
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Yan D, Chen D, Hawse JR, van Wijnen AJ, Im HJ. Bovine lactoferricin induces TIMP-3 via the ERK1/2-Sp1 axis in human articular chondrocytes. Gene 2013; 517:12-8. [PMID: 23313877 DOI: 10.1016/j.gene.2013.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/26/2012] [Accepted: 01/02/2013] [Indexed: 01/24/2023]
Abstract
Bovine lactoferricin (LfcinB) is a heparan sulfate-binding peptide with multiple bioactivities. In human articular cartilage, LfcinB antagonizes interleukin-1 β (IL-1β) and fibroblast growth factor 2 (FGF-2) in proteoglycan metabolism, catabolic protease expression, and induction of pro-inflammatory mediators. LfcinB specifically activates ERK1/2, p38 and Akt, but whether these signaling pathways control the expression of LfcinB target genes remained unknown. In this report, we characterized a novel aspect of LfcinB-mediated genetic response in human articular chondrocytes, tissue inhibitor of metalloproteinase 3 (TIMP-3) induction. Inhibition of individual signaling pathways revealed that ERK1/2 functions as the major pathway in TIMP-3 expression, whereas Akt plays a minor role. Further investigation identified Sp1 as a critical transcriptional activator in TIMP-3 regulation, and Sp1 activity is modulated by ERK1/2, not Akt. Comparative quantification indicates that significant downregulation of TIMP-3 occurs in OA chondrocytes, suggesting a beneficial role of LfcinB in OA pathogenesis. Our results collectively provide new insights into the mechanism of action of LfcinB, and support the candidacy of LfcinB as a chondroprotective agent.
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Affiliation(s)
- Dongyao Yan
- Department of Biochemistry, Section of Rheumatology, Rush University Medical Center, Chicago, IL 60612, USA
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Insulin is essential for in vitro chondrogenesis of mesenchymal progenitor cells and influences chondrogenesis in a dose-dependent manner. INTERNATIONAL ORTHOPAEDICS 2012; 37:153-8. [PMID: 23229799 DOI: 10.1007/s00264-012-1726-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 11/17/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE Insulin is a commonly used additive in chondrogenic media for differentiating mesenchymal stem cells (MSCs). The indispensability of other bioactive factors like TGF-β or dexamethasone in these medium formulations has been shown, but the role of insulin is unclear. The purpose of this study was to investigate whether insulin is essential for MSC chondrogenesis and if there is a dose-dependent effect of insulin on MSC chondrogenesis. METHODS We cultivated human MSCs in pellet culture in serum-free chondrogenic medium with insulin concentrations between 0 and 50 μg/ml and assessed the grade of chondrogenic differentiation by histological evaluation and determination of glycosaminoglycan (GAG), total collagen and DNA content. We further tested whether insulin can be delivered in an amount sufficient for MSC chondrogenesis via a drug delivery system in insulin-free medium. RESULTS Chondrogenesis was not induced by standard chondrogenic medium without insulin and the expression of cartilage differentiation markers was dose-dependent at insulin concentrations between 0 and 10 μg/ml. An insulin concentration of 50 μg/ml had no additional effect compared with 10 μg/ml. Insulin was delivered by a release system into the cell culture under insulin-free conditions in an amount sufficient to induce chondrogenesis. CONCLUSIONS Insulin is essential for MSC chondrogenesis in this system and chondrogenic differentiation is influenced by insulin in a dose-dependent manner. Insulin can be provided in a sufficient amount by a drug delivery system. Therefore, insulin is a suitable and inexpensive indicator substance for testing drug release systems in vitro.
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Yan D, Chen D, Im HJ. Fibroblast growth factor-2 promotes catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 axis that coordinates with the PKCδ pathway in human articular chondrocytes. J Cell Biochem 2012; 113:2856-65. [PMID: 22488450 DOI: 10.1002/jcb.24160] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Fibroblast growth factor 2 (FGF-2) has been found to play an anti-anabolic and/or a catabolic role in adult human articular cartilage via regulation of multiple signaling pathways. Upon FGF-2 stimulation, a molecular crosstalk between the mitogen activated protein kinase (MAPK) and protein kinase C δ (PKCδ) pathways are initiated, where PKCδ positively regulates downstream MAPK signaling. In this study, we explored the relationship between fibroblast growth factor receptor 1 (FGFR1), Ras, and PKCδ in FGF-2 signaling in human articular chondrocytes. Pathway-specific inhibition using both chemical inhibitors and siRNA targeting FGFR1 demonstrated that, upon FGF-2 stimulation, FGFR1 controlled both Ras and PKCδ activation, which converged on the Raf-MEK1/2-ERK1/2 axis. No crosstalk was observed between Ras and PKCδ. Quantitative PCR analyses revealed that both Ras and PKCδ contributed to FGF-2-mediated upregulation of MMP-13, ADAMTS5, and repression of aggrecan gene. Correspondingly, FGF-2-mediated proteoglycan loss was effectively reversed by individual pathway-specific inhibitor of Ras, PKCδ, and ERK1/2 in both 3-dimensional alginate bead culture and cartilage organ culture systems. Our findings suggest that FGFR1 interacts with FGF-2 and then activates Ras and PKCδ, which concertedly drive MAPK signaling to mediate biological effects of FGF-2. Such an integration of dual inputs constitutes a novel mechanism of FGF-2 signaling cascade in human articular chondrocytes.
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Affiliation(s)
- Dongyao Yan
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois 60612, USA
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Li X, Ellman MB, Kroin JS, Chen D, Yan D, Mikecz K, Ranjan KC, Xiao G, Stein GS, Kim SG, Cole B, van Wijnen AJ, Im HJ. Species-specific biological effects of FGF-2 in articular cartilage: implication for distinct roles within the FGF receptor family. J Cell Biochem 2012; 113:2532-42. [PMID: 22415882 DOI: 10.1002/jcb.24129] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Existing literature demonstrates that fibroblast growth factor-2 (FGF-2) exerts opposing, contradictory biological effects on cartilage homeostasis in different species. In human articular cartilage, FGF-2 plays a catabolic and anti-anabolic role in cartilage homeostasis, driving homeostasis toward degeneration and osteoarthritis (OA). In murine joints, however, FGF-2 has been identified as an anabolic mediator as ablation of the FGF-2 gene demonstrated increased susceptibility to OA. There have been no previous studies specifically addressing species-specific differences in FGF-2-mediated biological effects. In this study, we provide a mechanistic understanding by which FGF-2 exerts contradictory biological effects in human versus murine tissues. Using human articular cartilage (ex vivo) and a medial meniscal destabilization (DMM) animal model (in vivo), species-specific expression patterns of FGFR receptors (FGFRs) are elucidated between human and murine articular cartilage. In the murine OA model followed by intra-articular injection of FGF-2, we further correlate FGFR profiles to changes in behavioral pain perception, proteoglycan content in articular cartilage, and production of inflammatory (CD11b) and angiogenic (VEGF) mediators in synovium lining cells. Our results suggest that the fundamental differences in cellular responses between human and murine tissues may be secondary to distinctive expression patterns of FGFRs that eventually determine biological outcomes in the presence of FGF-2. The complex interplay of FGFRs and the downstream signaling cascades induced by FGF-2 in human cartilage should add caution to the use of this particular growth factor for biological therapy in the future.
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Affiliation(s)
- Xin Li
- Department of Biochemistry, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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Im HJ, Li X, Chen D, Yan D, Kim J, Ellman MB, Stein GS, Cole B, Kc R, Cs-Szabo G, van Wijnen AJ. Biological effects of the plant-derived polyphenol resveratrol in human articular cartilage and chondrosarcoma cells. J Cell Physiol 2012; 227:3488-97. [PMID: 22252971 DOI: 10.1002/jcp.24049] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The natural phytoestrogen resveratrol (RSV) may have therapeutic potential for arthritic conditions. RSV is chondroprotective for articular cartilage in rabbit models for arthritis, but its biological effects on human articular cartilage and chondrosarcoma cells are unknown. Effects of RSV on human articular cartilage homeostasis were studied by assessing production of matrix-degrading enzymes (MMP-13, ADAMTS4, and ADAMTS5), as well as proteoglycan production and synthesis. The counteractions of RSV against catabolic factors (e.g., FGF-2 or IL-1β) were examined by in vitro and ex vivo using monolayer, three-dimensional alginate beads and cartilage explants cultures, respectively. RSV improves cell viability of articular chondrocytes and effectively antagonizes cartilage-degrading protease production that was initiated by catabolic and/or anti-anabolic cytokines in human articular chondrocytes. RSV significantly also enhances BMP7-promoted proteoglycan synthesis as assessed by (35) S-sulfate incorporation. Protein-DNA interaction arrays suggest that RSV inhibits the activation of transcription factors involved in inflammation and cartilage catabolic signaling pathways, including direct downstream regulators of MAPK (e.g., AP-1, PEA3) and NFκB. RSV selectively compromises survival of human chondrosarcoma cells, but not primary articular chondrocytes, revealing cell-specific activity of RSV on non-tumorigenic versus tumor-derived cells. We propose that RSV exerts its chondroprotective functions, in part, by deactivating p53-induced apoptosis in human primary chondrocytes, but not human chondrosarcoma. Our findings suggest that RSV has potential as a unique biologic treatment for both prevention and treatment of cartilage degenerative diseases.
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Affiliation(s)
- Hee-Jeong Im
- Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA.
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JEONG HEEJEONG, YU SEONMI, JUNG JAECHANG, KIM SONGJA. Sulforaphane inhibits proliferation by causing cell cycle arrest at the G2/M phase in rabbit articular chondrocytes. Mol Med Rep 2012; 6:1199-203. [DOI: 10.3892/mmr.2012.1057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 08/20/2012] [Indexed: 11/05/2022] Open
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Kim JS, Ellman MB, An HS, Yan D, van Wijnen AJ, Murphy G, Hoskin DW, Im HJ. Lactoferricin mediates anabolic and anti-catabolic effects in the intervertebral disc. J Cell Physiol 2012; 227:1512-20. [PMID: 21678402 DOI: 10.1002/jcp.22867] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Lactoferricin (LfcinB) antagonizes biological effects mediated by angiogenic and catabolic growth factors, in addition to pro-inflammatory cytokines and chemokines in human endothelial cells and tumor cells. However, the effect of LfcinB on intervertebral disc (IVD) cell metabolism has not yet been investigated. Using bovine nucleus pulposus (NP) cells, we analyzed the effect of LfcinB on proteoglycan (PG) accumulation, PG synthesis, and anabolic gene expression. We assessed expression of genes for matrix-degrading enzymes such as matrix metalloproteases (MMPs) and a disintegrin-like and metalloprotease with thrombospondin motifs (ADAMTS family), as well as their endogenous inhibitors, tissue inhibitor of metalloproteases (TIMPs). In order to understand the specific molecular mechanisms by which LfcinB exerts its biological effects, we investigated intracellular signaling pathways in NP cells. LfcinB increased PG accumulation mainly via PG synthesis in a dose-dependent manner. Simultaneously, LfcinB dose-dependently downregulated catabolic enzymes. LfcinB's anti-catabolic effects were further demonstrated by a dose-dependent increase in multiple TIMP family members. Our results demonstrate that ERK and/or p38 mitogen-activated protein kinase pathways are the key signaling cascades that exert the biological effects of LfcinB in NP cells, regulating transcription of aggrecan, SOX-9, TIMP-1, TIMP-2, TIMP-3, and iNOS. Our results suggest that LfcinB has anabolic and potent anti-catabolic biological effects on bovine IVD cells that may have considerable promise in the treatment of disc degeneration in the future.
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Affiliation(s)
- Jae-Sung Kim
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois 60612, USA
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Saha AK, Kohles SS. A cell-matrix model of anabolic and catabolic dynamics during cartilage biomolecule regulation. ACTA ACUST UNITED AC 2012; 1:214-228. [PMID: 23795207 DOI: 10.1504/ijcih.2012.046995] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Physiologic regulation of extracellular matrix (ECM) in articular cartilage tissue is controlled by cellular and molecular mechanisms which are not fully understood. It has been observed that the synthesis of the ECM structural molecules, glycosaminoglycan and collagen are promoted by growth factors such as IGF-1 and TGF-β. Concomitant ECM degradation is promoted by a variety of cytokines such as IL-1. The clinical need for reparative therapies of articular cartilage is linked with its poor intrinsic healing capacity. The following modelling approach was applied to engineered cartilage as a platform for exploring cartilage biology and to introduce a predictive tool as a bioinformatic support system supporting regenerative therapies. Systems biology was adapted through a mathematical framework producing a computational intelligence paradigm to explore a controlled phasic regulatory influence of the inhibition and production of ECM biomolecules. Model outcomes describe a steady synthesis of ECM as a dependence on a cyclic influence of the catabolic action of proteases and anabolic action of growth factors. This relationship is shown quantitatively in a governing harmonic equation representing the simplified biological mechanisms of biomolecule homeostasis.
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Affiliation(s)
- Asit K Saha
- Center for Allaying Health Disparities through Research and Education (CADRE), Department of Mathematics and Computer Science, Central State University, Wilberforce, Ohio, 45384, USA
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Mueller MB, Tuan RS. Anabolic/Catabolic balance in pathogenesis of osteoarthritis: identifying molecular targets. PM R 2011; 3:S3-11. [PMID: 21703577 DOI: 10.1016/j.pmrj.2011.05.009] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 05/10/2011] [Indexed: 10/18/2022]
Abstract
Osteoarthritis is the most common degenerative musculoskeletal disease. In healthy cartilage, a low turnover of extracellular matrix molecules occurs. Proper balance of anabolic and catabolic activities is thus crucial for the maintenance of cartilage tissue integrity and for the repair of molecular damages sustained during daily usage. In persons with degenerative diseases such as osteoarthritis, this balance of anabolic and catabolic activities is compromised, and the extent of tissue degradation predominates over the capacity of tissue repair. This mismatch eventually results in cartilage loss in persons with osteoarthritis. Tissue homeostasis is controlled by coordinated actions and crosstalk among a number of proanabolic and antianabolic and procatabolic and anticatabolic factors. In osteoarthritis, an elevation of antianabolic and catabolic factors occurs. Interestingly, anabolic activity is also increased, but this response fails to repair the tissue because of both quantitative and qualitative insufficiency. This review presents an overview of the anabolic and catabolic activities involved in cartilage degeneration and the interplay among different signaling and metabolic factors. Understanding the basic molecular mechanisms responsible for tissue degeneration is critical to identifying and developing means to efficiently block or reverse the pathobiological symptoms of osteoarthritis.
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Affiliation(s)
- Michael B Mueller
- Department of Trauma Surgery, University of Regensburg Medical Center, Regensburg, Germany
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Orth P, Kaul G, Cucchiarini M, Zurakowski D, Menger MD, Kohn D, Madry H. Transplanted articular chondrocytes co-overexpressing IGF-I and FGF-2 stimulate cartilage repair in vivo. Knee Surg Sports Traumatol Arthrosc 2011; 19:2119-30. [PMID: 21350959 DOI: 10.1007/s00167-011-1448-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Accepted: 02/08/2011] [Indexed: 11/29/2022]
Abstract
PURPOSE The combination of chondrogenic factors might be necessary to adequately stimulate articular cartilage repair. In previous studies, enhanced repair was observed following transplantation of chondrocytes overexpressing human insulin-like growth factor I (IGF-I) or fibroblast growth factor 2 (FGF-2). Here, the hypothesis that co-overexpression of IGF-I and FGF-2 by transplanted articular chondrocytes enhances the early repair of cartilage defects in vivo and protects the neighbouring cartilage from degeneration was tested. METHODS Lapine articular chondrocytes were transfected with expression plasmid vectors containing the cDNA for the Escherichia coli lacZ gene or co-transfected with the IGF-I and FGF-2 gene, encapsulated in alginate and transplanted into osteochondral defects in the knee joints of rabbits in vivo. RESULTS After 3 weeks, co-overexpression of IGF-I/FGF-2 improved the macroscopic aspect of defects without affecting the synovial membrane. Immunoreactivity to type-I collagen, an indicator of fibrocartilage, was significantly lower in defects receiving IGF-I/FGF-2 implants. Importantly, combined IGF-I/FGF-2 overexpression significantly improved the histological repair score. Most remarkably, such enhanced cartilage repair was correlated with a 2.1-fold higher proteoglycan content of the repair tissue. Finally, there were less degenerative changes in the cartilage adjacent to the defects treated with IGF-I/FGF-2 implants. CONCLUSION The data demonstrate that combined gene delivery of therapeutic growth factors to cartilage defects may have value to promote cartilage repair. The results also suggest a protective effect of IGF-I/FGF-2 co-overexpression on the neighbouring articular cartilage. These findings support the concept of implementing gene transfer strategies for articular cartilage repair in a clinical setting.
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Affiliation(s)
- Patrick Orth
- Experimental Orthopaedics and Osteoarthritis Research, Saarland University, Kirrbergerstrasse, Building 37, 66421, Homburg, Germany
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Yan D, Chen D, Cool SM, van Wijnen AJ, Mikecz K, Murphy G, Im HJ. Fibroblast growth factor receptor 1 is principally responsible for fibroblast growth factor 2-induced catabolic activities in human articular chondrocytes. Arthritis Res Ther 2011; 13:R130. [PMID: 21835001 PMCID: PMC3239372 DOI: 10.1186/ar3441] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 06/06/2011] [Accepted: 08/11/2011] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION Cartilage degeneration driven by catabolic stimuli is a critical pathophysiological process in osteoarthritis (OA). We have defined fibroblast growth factor 2 (FGF-2) as a degenerative mediator in adult human articular chondrocytes. Biological effects mediated by FGF-2 include inhibition of proteoglycan production, up-regulation of matrix metalloproteinase-13 (MMP-13), and stimulation of other catabolic factors. In this study, we identified the specific receptor responsible for the catabolic functions of FGF-2, and established a pathophysiological connection between the FGF-2 receptor and OA. METHODS Primary human articular chondrocytes were cultured in monolayer (24 hours) or alginate beads (21 days), and stimulated with FGF-2 or FGF18, in the presence or absence of FGFR1 (FGF receptor 1) inhibitor. Proteoglycan accumulation and chondrocyte proliferation were assessed by dimethylmethylene blue (DMMB) assay and DNA assay, respectively. Expression of FGFRs (FGFR1 to FGFR4) was assessed by flow cytometry, immunoblotting, and quantitative real-time PCR (qPCR). The distinctive roles of FGFR1 and FGFR3 after stimulation with FGF-2 were evaluated using either pharmacological inhibitors or FGFR small interfering RNA (siRNA). Luciferase reporter gene assays were used to quantify the effects of FGF-2 and FGFR1 inhibitor on MMP-13 promoter activity. RESULTS Chondrocyte proliferation was significantly enhanced in the presence of FGF-2 stimulation, which was inhibited by the pharmacological inhibitor of FGFR1. Proteoglycan accumulation was reduced by 50% in the presence of FGF-2, and this reduction was successfully rescued by FGFR1 inhibitor. FGFR1 inhibitors also fully reversed the up-regulation of MMP-13 expression and promoter activity stimulated by FGF-2. Blockade of FGFR1 signaling by either chemical inhibitors or siRNA targeting FGFR1 rather than FGFR3 abrogated the up-regulation of matrix metalloproteinases 13 (MMP-13) and a disintegrin and metalloproteinase with a thrombospondin type 1 motif 5 (ADAMTS5), as well as down-regulation of aggrecan after FGF-2 stimulation. Flow cytometry, qPCR and immunoblotting analyses suggested that FGFR1 and FGFR3 were the major FGFR isoforms expressed in human articular chondrocytes. FGFR1 was activated more potently than FGFR3 upon FGF-2 stimulation. In osteoarthritic chondrocytes, FGFR3 was significantly down regulated (P < 0.05) with a concomitant increase in the FGFR1 to FGFR3 expression ratio (P < 0.05), compared to normal chondrocytes. Our results also demonstrate that FGFR3 was negatively regulated by FGF-2 at the transcriptional level through the FGFR1-ERK (extracellular signal-regulated kinase) signaling pathway in human articular chondrocytes. CONCLUSIONS FGFR1 is the major mediator with the degenerative potential in the presence of FGF-2 in human adult articular chondrocytes. FGFR1 activation by FGF-2 promotes catabolism and impedes anabolism. Disruption of the balance between FGFR1 and FGFR3 signaling ratio may contribute to the pathophysiology of OA.
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Affiliation(s)
- Dongyao Yan
- Department of Biochemistry, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Di Chen
- Department of Biochemistry, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Simon M Cool
- Department of Stem Cells and Tissue Repair, Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, 138648 Singapore
- Division of Musculoskeletal Oncology, Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, 119074 Singapore
| | - Andre J van Wijnen
- Division of Musculoskeletal Oncology, Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, 119074 Singapore
- Department of Cell Biology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, USA
| | - Katalin Mikecz
- Orthopedic Surgery, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Gillian Murphy
- Department of Oncology, Cambridge University, Cancer Research Institute, Li Ka Shing Center, Robinson Way, Cambridge, CB2 ORE, UK
| | - Hee-Jeong Im
- Department of Biochemistry, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
- Department of Internal Medicine, Section of Rheumatology, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
- Orthopedic Surgery, Rush University Medical Center, 1735 W Harrison Street, Chicago, IL 60612, USA
- Department of Bioengineering, University of Illinois, 1304 West Springfield Avenue, Chicago, IL 60612, USA
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Saha AK, Liang Y, Kohles SS. Biokinetic Mechanisms Linked With Musculoskeletal Health Disparities: Stochastic Models Applying Tikhonov's Theorem to Biomolecule Homeostasis. J Nanotechnol Eng Med 2011; 2:21004-21012. [PMID: 21743831 DOI: 10.1115/1.4003876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Multiscale technology and advanced mathematical models have been developed to control and characterize physicochemical interactions, respectively, enhancing cellular and molecular engineering progress. Ongoing tissue engineering development studies have provided experimental input for biokinetic models examining the influence of static or dynamic mechanical stimuli (Saha, A. K., and Kohles, S. S., 2010, "A Distinct Catabolic to Anabolic Threshold Due to Single-Cell Nanomechanical Stimulation in a Cartilage Biokinetics Model," J. Nanotechnol. Eng. Med., 1(3) p. 031005; 2010, "Periodic Nanomechanical Stimulation in a Biokinetics Model Identifying Anabolic and Catabolic Pathways Associated With Cartilage Matrix Homeostasis," J. Nanotechnol. Eng. Med., 1(4), p. 041001). In the current study, molecular regulatory thresholds associated with specific disease disparities are further examined through applications of stochastic mechanical stimuli. The results indicate that chondrocyte bioregulation initiates the catabolic pathway as a secondary response to control anabolic processes. In addition, high magnitude loading produced as a result of stochastic input creates a destabilized balance in homeostasis. This latter modeled result may be reflective of an injurious state or disease progression. These mathematical constructs provide a framework for single-cell mechanotransduction and may characterize transitions between healthy and disease states.
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Affiliation(s)
- Asit K Saha
- Center for Allaying Health Disparities through Research and Education (CADRE), Department of Mathematics & Computer Science, Central State University, Wilberforce, OH 45384
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Osteoarthritic tissues modulate functional properties of sensory neurons associated with symptomatic OA pain. Mol Biol Rep 2011; 38:5335-9. [PMID: 21327824 DOI: 10.1007/s11033-011-0684-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 02/04/2011] [Indexed: 02/07/2023]
Abstract
Osteoarthritis (OA) is an age-related degenerative disease of cartilaginous tissues that is accompanied by hyperalgesia. Molecular cause and effect relationships between OA and pain remain to be elucidated. In this study, we have developed an experimental ex vivo organ co-culture system with dorsal root ganglia (DRGs) and knee synovial tissues from OA patients or unaffected human subjects. Our results suggest that tissues may generate symptomatic pain by altering the functional properties of sensory neurons. Specifically, we find that the expression levels of genes associated with neuronal pathways (e.g., SP, NK1, NK2, NPYR1, NPYR2, α2δ1) or inflammation (COX2/PTGS2 and IL6/interferon β2) are clearly elevated in DRG explants cultured in the presence of OA derived synovial tissues. These findings are consistent with a model in which cytokines and pain molecules produced by knee synovium sensitize nociceptive neurons in tissues peripheral to joint cartilage.
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Hayashi M, Muneta T, Takahashi T, Ju YJ, Tsuji K, Sekiya I. Intra-articular injections of bone morphogenetic protein-7 retard progression of existing cartilage degeneration. J Orthop Res 2010; 28:1502-6. [PMID: 20872588 DOI: 10.1002/jor.21165] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We investigated the effect of weekly intra-articular injections of bone morphogenetic protein-7 (BMP-7) on prevention of progression of existing cartilage degeneration in an osteoarthritis model in rabbits. An anterior cruciate ligament transection (ACLT) model was used to create a progressive osteoarthritis model. BMP-7 was intra-articular injected weekly into the right knee and PBS into the left knee from 4 weeks after ACLT. Both sides of the knees were compared macroscopically, histologically, immunohistochemically, and by micro CT. Macroscopically, fibrillation in the femoral condyle was observed 4 weeks after ACLT. In the control knees, cartilage degeneration further progressed throughout the 12-week period. In the BMP-7 treated knee, osteoarthritis progression was milder than in the control knees. Histologically, safranin-O staining was decreased in the surgical knees at 4 weeks. Obvious erosions in both medial and lateral condyles were revealed in the control knees at 12 weeks, while cartilage matrix was predominantly retained in the BMP-7 treated knees. The macroscopic and microscopic OA score in the BMP-7 treated knee was better than that in the control in each rabbit. Immunohistochemical analysis demonstrated that both type II collagen and BMP-7 were more expressed in cartilage treated with BMP-7. Micro CT analysis showed that osteophytes were smaller in the BMP-7 treated knee compared to that of the control. Weekly intra-articular injections of BMP-7 inhibited progression of existing cartilage degeneration.
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Affiliation(s)
- Masaya Hayashi
- Section of Orthopaedic Surgery, Graduate School of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
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Madry H, Orth P, Kaul G, Zurakowski D, Menger MD, Kohn D, Cucchiarini M. Acceleration of articular cartilage repair by combined gene transfer of human insulin-like growth factor I and fibroblast growth factor-2 in vivo. Arch Orthop Trauma Surg 2010; 130:1311-22. [PMID: 20532898 DOI: 10.1007/s00402-010-1130-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Improving the biochemical and structural qualities of the new tissue that fills deep osteochondral defects is critical to enhance articular cartilage repair. We developed a novel molecular therapy to increase articular cartilage repair based on a combined strategy to stimulate chondrogenesis by co-transfection of the human insulin-like growth factor I (IGF-I) and fibroblast growth factor 2 (FGF-2) in a xenogenic transplantation model. MATERIALS AND METHODS NIH 3T3 cells were transfected with expression plasmid vectors containing a cDNA for the E. coli lacZ gene (lacZ implants), the human IGF-I gene (IGF-I implants) or both the human IGF-I and FGF-2 genes (IGF-I/FGF-2 implants). The expression patterns of the transgenes were monitored in vitro for 21 days. LacZ, IGF-I and IGF-I/FGF-2 implants were transplanted into osteochondral defects in the trochlear groove of rabbits. At 3 weeks, the quality of articular cartilage repair was evaluated qualitatively and quantitatively. RESULTS Both IGF-I and IGF-I/FGF-2 implants secreted increased levels of the corresponding recombinant proteins in vitro. In vivo, transplantation of the co-transfected IGF-I/FGF-2 implants increased the DNA content of the repair tissue, accelerated the formation of the subchondral bone and improved articular cartilage repair in a magnitude that was larger than with IGF-I alone or when compared to lacZ implants. CONCLUSION These results suggest that gene delivery of a combination of IGF-I and FGF-2 to cartilage defects may be more beneficial than application of IGF-I alone.
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Affiliation(s)
- Henning Madry
- Institute for Experimental Orthopaedics and Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany.
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Schmal H, Niemeyer P, Zwingmann J, Stoffel F, Südkamp NP, Mehlhorn AT. Association between expression of the bone morphogenetic proteins 2 and 7 in the repair of circumscribed cartilage lesions with clinical outcome. BMC Musculoskelet Disord 2010; 11:170. [PMID: 20670444 PMCID: PMC2920860 DOI: 10.1186/1471-2474-11-170] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 07/29/2010] [Indexed: 12/02/2022] Open
Abstract
Background Although there is much known about the role of BMPs in cartilage metabolism reliable data about the in vivo regulation in natural and surgically induced cartilage repair are still missing. Methods Lavage fluids of knee joints of 47 patients were collected during surgical therapy. 5 patients had no cartilage lesion and served as a control group, the other 42 patients with circumscribed cartilage defects were treated by microfracturing (19) or by an Autologous Chondrocyte Implantation (23). The concentrations of BMP-2 and BMP-7 were determined by ELISA. The clinical status was evaluated using the IKDC Score prior to and 1 year following the operation. Results High level expression in the control group was found for BMP-2, concentrations of BMP-7 remained below detection levels. No statistical differences could be detected in concentrations of BMP-2 or BMP-7 in the lavage fluids of knees with cartilage lesions compared to the control group. Levels of BMP-7 did not change after surgical cartilage repair, whereas concentrations of BMP-2 statistically significant increased after the intervention (p < 0.001). The clinical outcome following cartilage regenerating surgery increased after 1 year by 29% (p < 0.001). The difference of the IKDC score after 1 year and prior to the operation was used to quantify the degree of improvement following surgery. This difference statistically significant correlated with initial BMP-2 (R = 0.554, p < 0.001) but not BMP-7 (R = 0.031, n.s.) levels in the knee joints. Conclusions BMP-2 seems to play an important role in surgically induced cartilage repair; synovial expression correlates with the clinical outcome.
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Affiliation(s)
- Hagen Schmal
- Department of Orthopedic Surgery, University of Freiburg Medical Center, Hugstetter Str 55, D-79106 Freiburg, Germany.
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Cucchiarini M, Terwilliger EF, Kohn D, Madry H. Remodelling of human osteoarthritic cartilage by FGF-2, alone or combined with Sox9 via rAAV gene transfer. J Cell Mol Med 2010; 13:2476-2488. [PMID: 18705695 DOI: 10.1111/j.1582-4934.2008.00474.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Compensating for the loss of extracellular cartilage matrix, as well as counteracting the alterations of the chondrocyte phenotype in osteoarthritis are of key importance to develop effective therapeutic strategies against this disorder. In the present study, we analysed the benefits of applying a potent gene combination to remodel human osteoarthritic (OA) cartilage. We employed the promising recombinant adeno-associated virus (rAAV) vector to deliver the mitogenic fibroblast growth factor 2 (FGF-2) factor, alone or simultaneously with the transcription factor Sox9 as a key activator of matrix synthesis, to human normal and OA articular chondrocytes. We evaluated the effects of single (FGF-2) or combined (FGF-2/SOX9) transgene expression upon the regenerative activities of chondrocytes in three dimensional cultures in vitro and in cartilage explants in situ. Single overexpression of FGF-2 enhanced the survival and proliferation of both normal and OA chondrocytes, without stimulating the matrix synthetic processes in the increased pools of cells. The mitogenic properties of FGF-2 were maintained when SOX9 was co-overexpressed and concomitant with an increase in the production of proteoglycans and type-II collagen, suggesting that the transcription factor was capable of counterbalancing the effects of FGF-2 on matrix accumulation. Also important, expression of type-X collagen, a marker of hypertrophy strongly decreased following treatment by the candidate vectors. Most remarkably, the levels of activities achieved in co-treated human OA cartilage were similar to or higher than those observed in normal cartilage. The present findings show that combined expression of candidate factors in OA cartilage can re-establish key features of normal cartilage and prevent the pathological shift of metabolic homeostasis. These data provide further motivation to develop coupled gene transfer approaches via rAAV for the treatment of human OA.
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Affiliation(s)
- Magali Cucchiarini
- Laboratory for Experimental Orthopaedics, Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany
| | - Ernest F Terwilliger
- Division of Experimental Medicine, Harvard Institutes of Medicine and Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Dieter Kohn
- Laboratory for Experimental Orthopaedics, Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany
| | - Henning Madry
- Laboratory for Experimental Orthopaedics, Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg, Germany
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