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Okamoto K, Araki Y, Aizaki Y, Tanaka S, Kadono Y, Mimura T. Regulation of cytokine and chemokine expression by histone lysine methyltransferase MLL1 in rheumatoid arthritis synovial fibroblasts. Sci Rep 2024; 14:10610. [PMID: 38719857 PMCID: PMC11078978 DOI: 10.1038/s41598-024-60860-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 04/29/2024] [Indexed: 05/12/2024] Open
Abstract
Histone lysine methylation is thought to play a role in the pathogenesis of rheumatoid arthritis (RA). We previously reported aberrant expression of the gene encoding mixed-lineage leukemia 1 (MLL1), which catalyzes methylation of histone H3 lysine 4 (H3K4), in RA synovial fibroblasts (SFs). The aim of this study was to elucidate the involvement of MLL1 in the activated phenotype of RASFs. SFs were isolated from synovial tissues obtained from patients with RA or osteoarthritis (OA) during total knee joint replacement. MLL1 mRNA and protein levels were determined after stimulation with tumor necrosis factor α (TNFα). We also examined changes in trimethylation of H3K4 (H3K4me3) levels in the promoters of RA-associated genes (matrix-degrading enzymes, cytokines, and chemokines) and the mRNA levels upon small interfering RNA-mediated depletion of MLL1 in RASFs. We then determined the levels of H3K4me3 and mRNAs following treatment with the WD repeat domain 5 (WDR5)/MLL1 inhibitor MM-102. H3K4me3 levels in the gene promoters were also compared between RASFs and OASFs. After TNFα stimulation, MLL1 mRNA and protein levels were higher in RASFs than OASFs. Silencing of MLL1 significantly reduced H3K4me3 levels in the promoters of several cytokine (interleukin-6 [IL-6], IL-15) and chemokine (C-C motif chemokine ligand 2 [CCL2], CCL5, C-X-C motif chemokine ligand 9 [CXCL9], CXCL10, CXCL11, and C-X3-C motif chemokine ligand 1 [CX3CL1]) genes in RASFs. Correspondingly, the mRNA levels of these genes were significantly decreased. MM-102 significantly reduced the promoter H3K4me3 and mRNA levels of the CCL5, CXCL9, CXCL10, and CXCL11 genes in RASFs. In addition, H3K4me3 levels in the promoters of the IL-6, IL-15, CCL2, CCL5, CXCL9, CXCL10, CXCL11, and CX3CL1 genes were significantly higher in RASFs than OASFs. Our findings suggest that MLL1 regulates the expression of particular cytokines and chemokines in RASFs and is associated with the pathogenesis of RA. These results could lead to new therapies for RA.
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Affiliation(s)
- Keita Okamoto
- Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan
| | - Yasuto Araki
- Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan.
| | - Yoshimi Aizaki
- Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan
| | - Shinya Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan
- Department of Orthopedic Surgery, Japan Community Health Care Organization Saitama Northern Medical Center, 1-851, Miyahara-cho, Kita-ku, Saitama-shi, Saitama, 331-8625, Japan
| | - Yuho Kadono
- Department of Orthopaedic Surgery, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan
| | - Toshihide Mimura
- Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-chou, Iruma-gun, Saitama, 350-0495, Japan
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Xu K, Qin X, Zhang Y, Yang M, Zheng H, Li Y, Yang X, Xu Q, Li Y, Xu P, Wang X. Lycium ruthenicum Murr. anthocyanins inhibit hyperproliferation of synovial fibroblasts from rheumatoid patients and the mechanism study powered by network pharmacology. Phytomedicine 2023; 118:154949. [PMID: 37418838 DOI: 10.1016/j.phymed.2023.154949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/01/2023] [Accepted: 07/01/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA), is a typical autoimmune disease affecting nearly 1% of the world's population. The dysfunctional hyperproliferation of synovial fibroblast (SF) in articular cartilage of RA patients is considered as the essential etiology. Traditional chemotherapeutic agents for RA treatment are imperfect for their high cost and unpredictable side-effects. L. ruthenicum anthocyanins (LRAC) is a natural product that of potential for therapeutic application against RA. METHODS LRAC was characterized by UPLC-MS/MS. Bioinformatics analyses based on network pharmacology were applied to predict the potential targets of LRAC, and to select DEGs (differentially expressed genes) caused by RA pathogenesis from GSE77298. Interactions between LRAC and the predicted targets were evaluated by molecular docking. Effects of LRAC on SFs from RA patients were examined by in vitro assays, which were analyzed by flow cytometry and western blotting (WB). RESULTS LRAC was able to inhibit the abnormal proliferation and aggressive invasion of SFs from RA patients. LRAC was mainly constituted by petunidin (82.7%), with small amount of delphinidin (12.9%) and malvidin (4.4%) in terms of anthocyanidin. Bioinformatics analyses showed that in 3738 RA-related DEGs, 58 of them were collectively targeted by delphinidin, malvidin and delphinidin. AR, CDK2, CHEK1, HIF1A, CXCR4, MMP2 and MMP9, the seven hub genes constructed a central network mediating the signal transduction. Molecular docking confirmed the high affinities between the LRAC ligands and the protein receptors encoded by the hub genes. The in vitro assays validated that LRAC repressed the growth of RASF by cell cycle arresting and cell invasion paralyzing (c-Myc/p21/CDK2), initiating cell apoptosis (HIF-1α/CXCR4/Bax/Bcl-2), and inducing pyroptosis via ROS-dependent pathway (NOX4/ROS/NLRP3/IL-1β/Caspase-1). CONCLUSION LRAC can selectively inhibit the proliferation of RASFs, without side-effecting immunosuppression that usually occurred for RA treatment using MTX (methotrexate). These findings demonstrate the potential application of LRAC as a phytomedicine for RA treatment, and provide a valid approach for exploring natural remedies against autoimmune diseases.
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Affiliation(s)
- Ke Xu
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Xinshu Qin
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Yi Zhang
- Department of Food Science, The Pennsylvania State University, University Park, PA 16802, USA
| | - Mingyi Yang
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Haishi Zheng
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Yinglei Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Xingbin Yang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Qin Xu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Ying Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Peng Xu
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China.
| | - Xingyu Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
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Cheung SK, Chen S, Wong YH, Wu KK, Ho CL. Diagnosis of Seronegative Rheumatoid Arthritis by 68 Ga-FAPI PET/CT. Nucl Med Mol Imaging 2023; 57:44-45. [PMID: 36643942 PMCID: PMC9832189 DOI: 10.1007/s13139-022-00779-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/18/2022] [Accepted: 09/22/2022] [Indexed: 01/18/2023] Open
Abstract
Early diagnosis of rheumatoid arthritis with the initiation of disease-modifying antirheumatic drugs is important to prevent future disability. Seronegative rheumatoid arthritis lacks the classical immunological markers, thus imposing clinical diagnostic difficulty. In this case, we reported 68 Ga-FAPI PET/CT findings of seronegative rheumatoid arthritis in a 60-year-old lady. This case illustrates how 68 Ga-FAPI PET/CT aids in the diagnosis of seronegative rheumatoid arthritis.
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Affiliation(s)
- Shing Kee Cheung
- Department of Nuclear Medicine & PET, Hong Kong Sanatorium & Hospital, 2 Village Road, Happy Valley, Hong Kong, China
| | - Sirong Chen
- Department of Nuclear Medicine & PET, Hong Kong Sanatorium & Hospital, 2 Village Road, Happy Valley, Hong Kong, China
- Research Department, Hong Kong Sanatorium & Hospital, Hong Kong, China
| | - Yuet Hung Wong
- Department of Nuclear Medicine & PET, Hong Kong Sanatorium & Hospital, 2 Village Road, Happy Valley, Hong Kong, China
| | - Kwan Kit Wu
- Department of Nuclear Medicine & PET, Hong Kong Sanatorium & Hospital, 2 Village Road, Happy Valley, Hong Kong, China
| | - Chi Lai Ho
- Department of Nuclear Medicine & PET, Hong Kong Sanatorium & Hospital, 2 Village Road, Happy Valley, Hong Kong, China
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Zhang S, Zhang T, Xu Y, Rong G, Jing J. Inhibition of NUCB2 suppresses the proliferation, migration, and invasion of rheumatoid arthritis synovial fibroblasts from patients with rheumatoid arthritis in vitro. J Orthop Surg Res 2022; 17:574. [PMID: 36585713 PMCID: PMC9801639 DOI: 10.1186/s13018-022-03453-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 12/15/2022] [Indexed: 12/31/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune polyarthritis in which synovial fibroblasts (SF) play a major role in cartilage and bone destruction through tumorlike proliferation, migration, and invasion. Nesfatin-1, an 82-amino-acid-long peptide discovered by Oh-I in 2006, is derived from the precursor protein nucleobindin-2 (NUCB2). NUCB2/nesfatin-1 promotes cell proliferation, migration, and invasion in various tumors. We have previously shown that increased nesfatin-1 levels in the synovium may be associated with disease severity in patients with RA. However, the effect of NUCB2 on the tumorlike transformation of RASF has not yet been reported. The expression of NUCB2 mRNA in the synovium of RA and non-RA patients was further confirmed using three individual datasets from the NCBI GEO database. Gene set enrichment analysis (GSEA) was employed to explore the association between NUCB2 mRNA and RA-related gene signatures or signaling pathways in the GSE77298 dataset. Cell proliferation, migration, and invasion abilities were determined using Cell Counting Kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine (EdU), wound healing, and transwell assays, respectively. The results showed that the levels of NUCB2 mRNA in the synovium were significantly elevated in patients with RA. Moreover, GSEA showed that high expression of NUCB2 mRNA was related to gene signatures, including those involved in the cell cycle, DNA replication, extracellular matrix-receptor interaction, and focal adhesion. Furthermore, the results of CCK-8 and EdU assays indicated that inhibition of NUCB2 markedly repressed RASF proliferation. Additionally, the results of wound healing and transwell assays demonstrated that inhibition of NUCB2 significantly suppressed the migratory and invasive abilities of RASFs. Our findings are the first to demonstrate that the inhibition of NUCB2 suppresses the proliferation, migration, and invasion of RASFs in vitro.
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Affiliation(s)
- Shuo Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230032, Anhui, People's Republic of China
| | - Tao Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Yayun Xu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei, China
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Genxiang Rong
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Juehua Jing
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230032, Anhui, People's Republic of China.
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José Alcaraz M. New potential therapeutic approaches targeting synovial fibroblasts in rheumatoid arthritis. Biochem Pharmacol 2021; 194:114815. [PMID: 34715065 DOI: 10.1016/j.bcp.2021.114815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/18/2022]
Abstract
Synovial cells play a key role in joint destruction during chronic inflammation. In particular, activated synovial fibroblasts (SFs) undergo intrinsic alterations leading to an aggressive phenotype mediating cartilage destruction and bone erosion in rheumatoid arthritis (RA). Recent research has revealed a number of targets to control arthritogenic changes in SFs. Therefore, identification of SF phenotypes, control of epigenetic changes, modulation of cellular functions, or regulation of the activity of cation channels and different signaling pathways has been investigated. Although many of these approaches have shown efficacy in vitro and in animal models of RA, further research is needed to select the most relevant targets for drug development. This review is focused on the role of SFs as a potential strategy to discover novel therapeutic targets in RA aimed at preserving joint architecture and function.
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Affiliation(s)
- María José Alcaraz
- Department of Pharmacology, University of Valencia, and Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), Polytechnic University of Valencia, University of Valencia, Av. Vicent A. Estellés s/n, 46100 Burjasot, Valencia, Spain.
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Dorst DN, Rijpkema M, Buitinga M, Walgreen B, Helsen MMA, Brennan E, Klein C, Laverman P, Ramming A, Schmidkonz C, Kuwert T, Schett G, van der Kraan PM, Gotthardt M, Koenders MI. Targeting of fibroblast activation protein in rheumatoid arthritis patients: imaging and ex vivo photodynamic therapy. Rheumatology (Oxford) 2021; 61:2999-3009. [PMID: 34450633 PMCID: PMC9258553 DOI: 10.1093/rheumatology/keab664] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/20/2021] [Indexed: 12/21/2022] Open
Abstract
Objective Activated synovial fibroblasts are key effector cells in RA. Selectively depleting these based upon their expression of fibroblast activation protein (FAP) is an attractive therapeutic approach. Here we introduce FAP imaging of inflamed joints using 68Ga-FAPI-04 in a RA patient, and aim to assess feasibility of anti-FAP targeted photodynamic therapy (FAP-tPDT) ex vivo using 28H1-IRDye700DX on RA synovial explants. Methods Remnant synovial tissue from RA patients was processed into 6 mm biopsies and, from several patients, into primary fibroblast cell cultures. Both were treated using FAP-tPDT. Cell viability was measured in fibroblast cultures and biopsies were evaluated for histological markers of cell damage. Selectivity of the effect of FAP-tPDT was assessed using flow cytometry on primary fibroblasts and co-cultured macrophages. Additionally, one RA patient intravenously received 68Ga-FAPI-04 and was scanned using PET/CT imaging. Results In the RA patient, FAPI-04 PET imaging showed high accumulation of the tracer in arthritic joints with very low background signal. In vitro, FAP-tPDT induced cell death in primary RA synovial fibroblasts in a light dose-dependent manner. An upregulation of cell damage markers was observed in the synovial biopsies after FAP-tPDT. No significant effects of FAP-tPDT were noted on macrophages after FAP-tPDT of neighbouring fibroblasts. Conclusion In this study the feasibility of selective FAP-tPDT in synovium of rheumatoid arthritis patients ex vivo is demonstrated. Furthermore, this study provides the first indication that FAP-targeted PET/CT can be used to image arthritic joints, an important step towards application of FAP-tPDT as a targeted locoregional therapy for RA.
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Affiliation(s)
- Daphne N Dorst
- Department of medical imaging: Nuclear medicine, Radboudumc, Nijmegen, The Netherlands.,Department of Experimental Rheumatology, Radboudumc, Nijmegen, The Netherlands
| | - Mark Rijpkema
- Department of medical imaging: Nuclear medicine, Radboudumc, Nijmegen, The Netherlands
| | - Mijke Buitinga
- Department of Nutrition and Movement Sciences, Maastricht University, Maastricht, The Netherlands.,Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Birgitte Walgreen
- Department of Experimental Rheumatology, Radboudumc, Nijmegen, The Netherlands
| | - Monique M A Helsen
- Department of Experimental Rheumatology, Radboudumc, Nijmegen, The Netherlands
| | - Evan Brennan
- Department of Experimental Rheumatology, Radboudumc, Nijmegen, The Netherlands
| | - Christian Klein
- Roche Pharmaceutical Research and Early Development, Innovation Center Zurich, Schlieren, Switzerland
| | - Peter Laverman
- Department of medical imaging: Nuclear medicine, Radboudumc, Nijmegen, The Netherlands
| | - Andreas Ramming
- Department of medicine 3, Friedrich Alexander University Erlangen-Nürnberg and Universtitätsklinikum Erlangen, Germany.,Deutsches Zentrum für Immuntherapie, Erlangen, Germany
| | | | - Torsten Kuwert
- Clinic of Nuclear Medicine, University Hospital Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of medicine 3, Friedrich Alexander University Erlangen-Nürnberg and Universtitätsklinikum Erlangen, Germany.,Deutsches Zentrum für Immuntherapie, Erlangen, Germany
| | | | - Martin Gotthardt
- Department of medical imaging: Nuclear medicine, Radboudumc, Nijmegen, The Netherlands
| | - Marije I Koenders
- Department of Experimental Rheumatology, Radboudumc, Nijmegen, The Netherlands
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Krošel M, Gabathuler M, Maciukiewicz M, Moser L, Lee GI, Marks M, Tomšič M, Distler O, Ospelt C, Klein K. Individual functions of the histone acetyl transferases CBP and p300 in regulating the inflammatory response of synovial fibroblasts. J Autoimmun 2021; 123:102709. [PMID: 34304080 DOI: 10.1016/j.jaut.2021.102709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/14/2021] [Accepted: 07/14/2021] [Indexed: 11/28/2022]
Abstract
Chromatin remodeling, and a persistent histone 3 lysine 27 acetylation (H3K27ac) in particular, are associated with a sustained inflammatory response of synovial fibroblasts (SF) in rheumatoid arthritis (RA). Here we investigated individual functions of the writers of H3K27ac marks, the homologues histone acetyl transferases (HAT) CBP and p300, in controlling the constitutive and inflammatory gene expression in RA SF. We applied a silencing strategy, followed by RNA-sequencing and pathway analysis, complemented with the treatment of SF with inhibitors targeting the HAT (C646) or bromo domains (I-CBP) of CBP and p300. We showed that CBP and p300 undertook overlapping and, in particular at gene levels, distinct regulatory functions in SF. p300 is the major HAT for H3K27ac in SF and regulated more diverse pathways than CBP. Whereas both factors regulated genes associated with extracellular matrix remodeling, adhesion and proliferation, p300 specifically controlled developmental genes associated with limb development. Silencing of CBP specifically down regulated the TNF-induced expression of interferon-signature genes. In contrast, silencing of p300 resulted in anti- and pro-inflammatory effects. Integration of data sets derived from RNA-sequencing and chromatin immunoprecipitation sequencing for H3K27ac revealed that changes in gene expression after CBP or p300 silencing could be only partially explained by changes in levels of H3K27ac. Inhibition of CBP/p300 using HAT and bromo domain inhibitors strongly mirrored effects obtained by silencing of p300, including anti- and pro-inflammatory effects, indicating that such inhibitors are not sufficient to be used as anti-inflammatory drugs.
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Affiliation(s)
- Monika Krošel
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland; Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | - Marcel Gabathuler
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | - Malgorzata Maciukiewicz
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | - Larissa Moser
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | - Gideon Isaac Lee
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | | | - Matija Tomšič
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | - Oliver Distler
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | - Caroline Ospelt
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland.
| | - Kerstin Klein
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland; Department of BioMedical Research, University of Bern, Bern, Switzerland; Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland.
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Hu P, Dong ZS, Zheng S, Guan X, Zhang L, Li L, Liu Z. The effects of miR-26b-5p on fibroblast-like synovial cells in rheumatoid arthritis (RA-FLS) via targeting EZH2. Tissue Cell 2021; 72:101591. [PMID: 34325277 DOI: 10.1016/j.tice.2021.101591] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/17/2021] [Accepted: 07/07/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To study the possible effects of miR-26b-5p on fibroblast-like synovial cells in rheumatoid arthritis (RA-FLS) through targeting enhancer of zeste homolog 2 (EZH2). METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect miR-26b-5p and EZH2 expressions in synovial tissues of RA patients and healthy controls. Dual luciferase reporter assay was adopted to verify the targeting relationship between miR-26b-5p and EZH2. RA-FLS was divided into Blank, mimics NC, mimics, NC siRNA, EZH2 siRNA and inhibitors + EZH2 siRNA groups, followed by the assessment of proliferation, apoptosis, migration and invasion. The expression of genes and proteins in RA-FLS was tested by qRT-PCR and western blotting, respectively. RESULTS MiR-26b-5p expression was lower, while EZH2 expression was higher in synovial tissue of RA patients than healthy controls; and miR-26b-5p was negatively correlated with the EZH2 in synovial tissue of RA patients, which were both related with disease activities. MiR-26b-5p can target EZH2 in RA-FLS. In vitro, miR-26b-5p mimics down-regulated EZH2 expression in RA-FLS. Compared with EZH2 siRNA group, the miR-26b-5p expression in inhibitors + EZH2 siRNA group was reduced, but EZH2 expression was increased. EZH2 siRNA inhibited the proliferation, invasion and migration of RA-FLS, promoted cell apoptosis, and inhibited the expression of TNF-α, IL-1β, IL-6, IL-17, MMP-2, MMP-9, which were reversed by miR-26b-5p inhibitor. CONCLUSION MiR-26b-5p may affect the biological characteristics of RA-FLS via targeting EZH2, including proliferation, apoptosis, invasion and migration, as well as the secretion of cytokines, thus playing a potential therapeutic role in RA.
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Affiliation(s)
- Pei Hu
- Department of Ultrasound, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Zheng-Sen Dong
- Department of Ultrasound, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Shuang Zheng
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Xin Guan
- Department of Ultrasound, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Lei Zhang
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Lin Li
- Department of Ultrasound, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China.
| | - Zhen Liu
- Department of Ultrasound, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China.
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Jiang C, Wu X, Li X, Li M, Zhang W, Tao P, Xu J, Ren X, Mo L, Guo Y, Wang S, Geng M, Zhang F, Tian J, Zhu W, Meng L, Lu S. Loss of microRNA-147 function alleviates synovial inflammation through ZNF148 in rheumatoid and experimental arthritis. Eur J Immunol 2021; 51:2062-2073. [PMID: 33864383 DOI: 10.1002/eji.202048850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 03/13/2021] [Accepted: 04/15/2021] [Indexed: 11/06/2022]
Abstract
MicroRNA-147 (miR-147) had been previously found induced in synoviocytes by inflammatory stimuli derived from T cells in experimental arthritis. This study was designed to verify whether loss of its function might alleviate inflammatory events in joints of experimental and rheumatoid arthritis (RA). Dark Agouti (DA) rats were injected intradermally with pristane to induce arthritis, and rno-miR-147 antagomir was locally administrated into individual ankle compared with negative control or rno-miR-155-5p antagomir (potential positive control). Arthritis onset, macroscopic severity, and pathological changes were monitored. While in vitro, gain or loss function of hsa-miR-147b-3p/hsa-miR-155-5p and ZNF148 was achieved in human synovial fibroblast cell line SW982 and RA synovial fibroblasts (RASF). The expression of miRNAs and mRNAs was detected by using RT-quantitative PCR, and protein expression was detected by using Western blotting. Anti-miR-147 therapy could alleviate the severity, especially for the synovitis and joint destruction in experimental arthritis. Gain of hsa-miR-147b-3p/hsa-miR-155-5p function in TNF-α stimulated SW982 and RASF cells could upregulate, in contrast, loss of hsa-miR-147b-3p/hsa-miR-155-5p function could downregulate the gene expression of TNF-α, IL-6, MMP3, and MMP13. Hence, such alteration could participate in synovial inflammation and joint destruction. RNAi of ZNF148, a miR-147's target, increased gene expression of TNF-α, IL-6, MMP3, and MMP13 in SW982 and RASF cells. Also, mRNA sequencing data showed that hsa-miR-147b-3p mimic and ZNF148 siRNA commonly regulated the gene expression of CCL3 and DEPTOR as well as some arthritis and inflammation-related pathways. Taken together, miR-147b-3p contributes to synovial inflammation through repressing ZNF148 in RA and experimental arthritis.
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Affiliation(s)
- Congshan Jiang
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Xiaoying Wu
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Xiaowei Li
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Mengyao Li
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Wentao Zhang
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Pei Tao
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Jing Xu
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Xiaoyu Ren
- Department of Joint Surgery, Xi'an Hong Hui Hospital, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China
| | - Lingfei Mo
- Department of Rheumatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China
| | - Yuanxu Guo
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Si Wang
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Manman Geng
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Fujun Zhang
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Juan Tian
- Department of Rheumatology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China
| | - Wenhua Zhu
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Liesu Meng
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, Institute of Molecular and Translational Medicine (IMTM), School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, P. R. China.,Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, P. R. China
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10
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Saeki N, Imai Y. Reprogramming of synovial macrophage metabolism by synovial fibroblasts under inflammatory conditions. Cell Commun Signal 2020; 18:188. [PMID: 33256735 PMCID: PMC7708128 DOI: 10.1186/s12964-020-00678-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022] Open
Abstract
Background Macrophages adapt to microenvironments, and change metabolic status and functions to regulate inflammation and/or maintain homeostasis. In joint cavities, synovial macrophages (SM) and synovial fibroblasts (SF) maintain homeostasis. However, under inflammatory conditions such as rheumatoid arthritis (RA), crosstalk between SM and SF remains largely unclear. Methods Immunofluorescent staining was performed to identify localization of SM and SF in synovium of collagen antibody induced arthritis (CAIA) model mice and normal mice. Murine arthritis tissue-derived SM (ADSM), arthritis tissue-derived SF (ADSF) and normal tissue-derived SF (NDSF) were isolated and the purity of isolated cells was examined by RT-qPCR and flow cytometry analysis. RNA-seq was conducted to reveal gene expression profile in ADSM, NDSF and ADSF. Cellular metabolic status and expression levels of metabolic genes and inflammatory genes were analyzed in ADSM treated with ADSM-conditioned medium (ADSM-CM), NDSF-CM and ADSF-CM.
Results SM and SF were dispersed in murine hyperplastic synovium. Isolations of ADSM, NDSF and ADSF to analyze the crosstalk were successful with high purity. From gene expression profiles by RNA-seq, we focused on secretory factors in ADSF-CM, which can affect metabolism and inflammatory activity of ADSM. ADSM exposed to ADSF-CM showed significantly upregulated glycolysis and mitochondrial respiration as well as glucose and glutamine uptake relative to ADSM exposed to ADSM-CM and NDSF-CM. Furthermore, mRNA expression levels of metabolic genes, such as Slc2a1, Slc1a5, CD36, Pfkfb1, Pfkfb3 and Irg1, were significantly upregulated in ADSM treated with ADSF-CM. Inflammation marker genes, including Nos2, Tnf, Il-1b and CD86, and the anti-inflammatory marker gene, Il-10, were also substantially upregulated by ADSF-CM. On the other hand, NDSF-CM did not affect metabolism and gene expression in ADSM. Conclusions These findings suggest that crosstalk between SM and SF under inflammatory conditions can induce metabolic reprogramming and extend SM viability that together can contribute to chronic inflammation in RA. Video Abstract
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Affiliation(s)
- Noritaka Saeki
- Division of Laboratory Animal Research, Advanced Research Support Center, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - Yuuki Imai
- Division of Laboratory Animal Research, Advanced Research Support Center, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Department of Pathophysiology, Graduate School of Medicine, Ehime University, Ehime, Japan.
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11
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Valin A, Del Rey MJ, Municio C, Usategui A, Romero M, Fernández-Felipe J, Cañete JD, Blanco FJ, Ruano Y, Criado G, Pablos JL. IL6/sIL6R regulates TNFα-inflammatory response in synovial fibroblasts through modulation of transcriptional and post-transcriptional mechanisms. BMC Mol Cell Biol 2020; 21:74. [PMID: 33126846 PMCID: PMC7596982 DOI: 10.1186/s12860-020-00317-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/14/2020] [Indexed: 01/01/2023] Open
Abstract
Introduction The clinical efficacy of specific interleukin-6 inhibitors has confirmed the central role of IL6 in rheumatoid arthritis (RA). However the local role of IL6, in particular in synovial fibroblasts (SF) as a direct cellular target to IL6/sIL6R signal is not well characterized. The purpose of the study was to characterize the crosstalk between TNFα and IL6/sIL6R signaling to the effector pro-inflammatory response of SF. Methods SF lines were stimulated with either TNFα, IL6/sIL6R, or both together, for the time and dose indicated for each experiment, and where indicated, cells were treated with inhibitors actinomycin D, adalimumab, ruxolitinib and cycloheximide. mRNA expression of cytokines, chemokines and matrix metalloproteases (MMPs) were analyzed by quantitative RT-PCR. Level of IL8/CXCL8 and CCL8 in culture supernatants was measured by ELISA. Mononuclear and polymorphonuclear cells migration assays were assessed by transwell using conditioned medium from SF cultures. Statistical analyses were performed as indicated in the corresponding figure legends and a p-value < 0.05 was considered statistically significant. Results The stimulation of SF with IL6/sIL6R and TNFα, cooperatively promotes the expression of mono- and lymphocytic chemokines such as IL6, CCL8 and CCL2, as well as matrix degrading enzymes such as MMP1, while inhibiting the induction of central neutrophil chemokines such as IL8/CXCL8. These changes in the pattern of chemokines expression resulted in reduced polymorphonuclear (PMN) and increased mononuclear cells (MNC) chemoattraction by SF. Mechanistic analyses of the temporal expression of genes demonstrated that the cooperative regulation mediated by these two factors is mostly induced through de novo transcriptional mechanisms activated by IL6/sIL6R. Furthermore, we also demonstrate that TNFα and IL6/sIL6R cooperation is partially mediated by the expression of secondary factors signaling through JAK/STAT pathways. Conclusions These results point out to a highly orchestrated response to IL6 in TNFα-induced SF and provide additional insights into the role of IL6/sIL6R in the context of RA, highlighting the contribution of IL6/sIL6R to the interplay of SF with other inflammatory cells. Supplementary information Supplementary information accompanies this paper at 10.1186/s12860-020-00317-7.
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Affiliation(s)
- Alvaro Valin
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain. .,Present Address: Springer Healthcare Iberica SL, Madrid, Spain.
| | - Manuel J Del Rey
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Cristina Municio
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Alicia Usategui
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Marina Romero
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Jesús Fernández-Felipe
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Juan D Cañete
- Unitat d'Artritis, Servei de Reumatologia, Hospital Clínic de Barcelona and Institut d'Investigacions Biomèdiques August Pí i Sunyer, Barcelona, Spain
| | - Francisco J Blanco
- Laboratorio de Investigación Osteoarticular y del Envejecimiento, Instituto de Investigación Biomédica de A Coruña, INIBIC, A Coruña, Spain
| | - Yolanda Ruano
- Servicio de Anatomía Patológica, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Gabriel Criado
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - José L Pablos
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain. .,Servicio de Reumatología, Hospital 12 de Octubre, Universidad Complutense de Madrid, 28041, Madrid, Spain.
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12
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Xu J, Yang J, Chen J, Zhang X, Wu Y, Hart A, Nyga A, Shelton JC. Activation of synovial fibroblasts from patients at revision of their metal-on-metal total hip arthroplasty. Part Fibre Toxicol 2020; 17:42. [PMID: 32854727 PMCID: PMC7450933 DOI: 10.1186/s12989-020-00374-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/12/2020] [Indexed: 12/20/2022] Open
Abstract
Background The toxicity of released metallic particles generated in metal-on-metal (MoM) total hip arthroplasty (THA) using cobalt chromium (CoCr) has raised concerns regarding their safety amongst both surgeons and the public. Soft tissue changes such as pseudotumours and metallosis have been widely observed following the use of these implants, which release metallic by-products due to both wear and corrosion. Although activated fibroblasts, the dominant cell type in soft tissues, have been linked to many diseases, the role of synovial fibroblasts in the adverse reactions caused by CoCr implants remains unknown. To investigate the influence of implants manufactured from CoCr, the periprosthetic synovial tissues and synovial fibroblasts from patients with failed MoM THA, undergoing a revision operation, were analysed and compared with samples from patients undergoing a primary hip replacement, in order to elucidate histological and cellular changes. Results Periprosthetic tissue from patients with MoM implants was characterized by marked fibrotic changes, notably an increase in collagen content from less than 20% to 45–55%, an increase in α-smooth muscle actin positive cells from 4 to 9% as well as immune cells infiltration. Primary cell culture results demonstrated that MoM synovial fibroblasts have a decreased apoptosis rate from 14 to 6% compared to control synovial fibroblasts. In addition, synovial fibroblasts from MoM patients retained higher contractility and increased responsiveness to chemotaxis in matrix contraction. Their mechanical properties at a single cell level increased as observed by a 60% increase in contraction force and higher cell stiffness (3.3 kPa in MoM vs 2.18 kPa in control), as measured by traction force microscopy and atomic force microscopy. Further, fibroblasts from MoM patients promoted immune cell invasion by secreting monocyte chemoattractant protein 1 (MCP-1, CCL2) and induced monocyte differentiation, which could also be associated with excess accumulation of synovial macrophages. Conclusion Synovial fibroblasts exposed in vivo to MoM THA implants that release CoCr wear debris displayed dramatic phenotypic alteration and functional changes. These findings unravelled an unexpected effect of the CoCr alloy and demonstrated an important role of synovial fibroblasts in the undesired tissue reactions caused by MoM THAs.
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Affiliation(s)
- Jing Xu
- Department of Paediatric Orthopaedics, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China.,Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Junyao Yang
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK.,Cardiovascular Division, Faculty of Life Science and Medicine, King's College London, London, SE5 9NU, UK
| | - Jian Chen
- Department of Spine Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Xiaoli Zhang
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Yuanhao Wu
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Alister Hart
- Institute of Orthopaedics & Musculoskeletal Science, Royal National Orthopaedic Hospital, University College London, Stanmore, HA7 4AP, UK
| | - Agata Nyga
- Research Department of Surgical Biotechnology, Division of Surgery and Interventional Sciences, University College London, London, NW3 2QG, UK. .,Current affiliation: MRC LMB, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
| | - Julia C Shelton
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK.
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13
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Chu Y, Wang J, Zhou X. Mast cell chymase in synovial fluid of collagen-induced-arthritis rats regulates gelatinase release and promotes synovial fibroblasts proliferation via FAK/p21 signaling pathway. Biochem Biophys Res Commun 2019; 514:336-343. [PMID: 31036322 DOI: 10.1016/j.bbrc.2019.04.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 04/16/2019] [Indexed: 10/26/2022]
Abstract
Mast cells (MCs) were accumulated in synovial tissue of rheumatoid arthritis (RA) patients. MC activation releases numerous mediators including MC-chymase. Synovial fibroblast shows a dramatic hyperplasia in RA articular cavity, but the effects of MC-chymase on synovial fibroblast are unknown. In this study, the collagen-induced-arthritis (CIA) rat model was employed to evaluate the dynamic changes of MC-chymase activity and other inflammatory factors during CIA development in-vivo. The fresh primary synovial fibroblasts from normal or CIA rats were extracted to compare the differences of these two cell-types, and to investigate the effects of MC-chymase on both-types of synovial fibroblast. The data showed that the dynamic changes in chymase activity in synovial fluids of CIA rats before and after immunizations were companied with the changes of tryptase, MMP-2/-9, TNF-α, IL-6, Co-II IgG, total protein, paw-thickness and body weight in-vivo. The baseline differences in cell grow rates, expression levels of p21, FAK, MMP-9 between normal and CIA-SFB have been seen. Compared to the normal synovial fibroblasts, CIA-SFB increased the percentage of the cells transferred to S or G2/M phases in cell cycle in-vivo; CIA-SFB become more proliferative with high-expression MMP-2/9 during CIA development. MC-chymase in-vitro promoted both types of synovial fibroblast proliferation and induced cell cycle changes, but CIA-synovial fibroblasts exhibited much stronger responses to MC-chymase stimulation by increased expression levels of p21, FAK, MMP-9 which associated with cell adhesion and migration. This study might give a new insight that the activated mast cell can be an important target cell for RA treatment and suggest that MC-chymase needs well attention for therapeutic aims.
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Affiliation(s)
- Yi Chu
- The School of Pharmaceutical Engineering and Life Science, Changzhou University, Jiangsu, 213164, China
| | - Jingjing Wang
- The School of Pharmaceutical Engineering and Life Science, Changzhou University, Jiangsu, 213164, China
| | - Xiaoying Zhou
- The School of Pharmaceutical Engineering and Life Science, Changzhou University, Jiangsu, 213164, China.
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14
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Tanner MR, Pennington MW, Chauhan SS, Laragione T, Gulko PS, Beeton C. KCa1.1 and Kv1.3 channels regulate the interactions between fibroblast-like synoviocytes and T lymphocytes during rheumatoid arthritis. Arthritis Res Ther 2019; 21:6. [PMID: 30612588 PMCID: PMC6322314 DOI: 10.1186/s13075-018-1783-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/29/2018] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Fibroblast-like synoviocytes (FLS) and CCR7- effector memory T (TEM) cells are two of the major cell types implicated in the progression of rheumatoid arthritis (RA). In particular, FLS become highly invasive, whereas TEM cells proliferate and secrete proinflammatory cytokines, during RA. FLS and T cells may also interact and influence each other's phenotypes. Inhibition of the pathogenic phenotypes of both FLS and TEM cells can be accomplished by selectively blocking the predominant potassium channels that they upregulate during RA: KCa1.1 (BK, Slo1, MaxiK, KCNMA1) upregulated by FLS and Kv1.3 (KCNA3) upregulated by activated TEM cells. In this study, we investigated the roles of KCa1.1 and Kv1.3 in regulating the interactions between FLS and TEM cells and determined if combination therapies of KCa1.1- and Kv1.3-selective blockers are more efficacious than monotherapies in ameliorating disease in rat models of RA. METHODS We used in vitro functional assays to assess the effects of selective KCa1.1 and Kv1.3 channel inhibitors on the interactions of FLS isolated from rats with collagen-induced arthritis (CIA) with syngeneic TEM cells. We also used flow cytometric analyses to determine the effects of KCa1.1 blockers on the expression of proteins used for antigen presentation on CIA-FLS. Finally, we used the CIA and pristane-induced arthritis models to determine the efficacy of combinatorial therapies of KCa1.1 and Kv1.3 blockers in reducing disease severity compared with monotherapies. RESULTS We show that the interactions of FLS from rats with CIA and of rat TEM cells are regulated by KCa1.1 and Kv1.3. Inhibiting KCa1.1 on FLS reduces the ability of FLS to stimulate TEM cell proliferation and migration, and inhibiting Kv1.3 on TEM cells reduces TEM cells' ability to enhance FLS expression of KCa1.1 and major histocompatibility complex class II protein, as well as stimulates their invasion. Furthermore, we show that combination therapies of selective KCa1.1 and Kv1.3 blockers are more efficacious than monotherapies at reducing signs of disease in two rat models of RA. CONCLUSIONS Our results demonstrate the importance of KCa1.1 and Kv1.3 in regulating FLS and TEM cells during RA, as well as the value of combined therapies targeting both of these cell types to treat RA.
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Affiliation(s)
- Mark R. Tanner
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
- Interdepartmental Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX USA
| | - Michael W. Pennington
- Peptides International, Inc., Louisville, KY USA
- Present address: Ambiopharm, Inc., North Augusta, SC USA
| | | | - Teresina Laragione
- Division of Rheumatology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Pércio S. Gulko
- Division of Rheumatology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Christine Beeton
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
- Biology of Inflammation Center, Center for Drug Discovery, Cardiovascular Research Institute, and Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX USA
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15
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Frey O, Hückel M, Gajda M, Petrow PK, Bräuer R. Induction of chronic destructive arthritis in SCID mice by arthritogenic fibroblast-like synoviocytes derived from mice with antigen-induced arthritis. Arthritis Res Ther 2018; 20:261. [PMID: 30466479 PMCID: PMC6251107 DOI: 10.1186/s13075-018-1720-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 09/11/2018] [Indexed: 01/15/2023] Open
Abstract
Background Fibroblast-like synoviocytes (FLSs) from patients with rheumatoid arthritis (RA) are autonomously activated to maintain inflammation and joint destruction in co-transplantation models. To elucidate inducing mechanisms involved in this altered behavior, the arthritogenic potential of FLSs from murine antigen-induced arthritis (AIA) were investigated in a transfer model. Methods FLSs were isolated, expanded in vitro, and transferred into knee joint cavities of severe combined immunodeficient (SCID) mice. Their arthritogenic capacity was assessed by monitoring joint swelling and evaluation of histological parameters 70 to 100 days after transfer. Results FLSs from AIA mice were able to transfer arthritis into recipient SCID mice. FLS transfer induced a chronic arthritis with recruitment of inflammatory cells and marked cartilage destruction. Long-lasting inflammation was not required for imprinting of arthritogenicity in FLSs since cells isolated from acute arthritic joints were fully competent to transfer arthritis. We also observed arthritogenic potential in FLSs isolated from contralateral non-arthritic joints in our monoarticular arthritis model. Conclusions We show that the transformation of FLSs into arthritogenic cells occurs early in arthritis development. This challenges current hypotheses on the role of these cells in arthritis pathogenesis and opens up the way for further mechanistic studies.
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Affiliation(s)
- Oliver Frey
- Institute of Pathology, University Hospital, Jena, Germany. .,Institute of Clinical Chemistry and Laboratory Medicine, University Hospital, Am Klinikum 1, D-07743, Jena, Germany. .,Present address: Institute of Medical Diagnostics, Berlin, Germany.
| | - Marion Hückel
- Institute of Pathology, University Hospital, Jena, Germany
| | | | - Peter K Petrow
- Institute of Pathology, University Hospital, Jena, Germany
| | - Rolf Bräuer
- Institute of Pathology, University Hospital, Jena, Germany
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16
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Wang S, Wang L, Wu C, Sun S, Pan JH. E2F2 directly regulates the STAT1 and PI3K/AKT/NF-κB pathways to exacerbate the inflammatory phenotype in rheumatoid arthritis synovial fibroblasts and mouse embryonic fibroblasts. Arthritis Res Ther 2018; 20:225. [PMID: 30286793 PMCID: PMC6235203 DOI: 10.1186/s13075-018-1713-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/04/2018] [Indexed: 11/30/2022] Open
Abstract
Background Expression of E2F transcription factor 2 (E2F2), a transcription factor related to the cell cycle, is abnormally high in rheumatoid arthritis synovial fibroblasts (RASFs). Deregulated expression of E2F2 leads to abnormal production of proinflammatory cytokines, such as interleukin (IL)-1α, IL-1β, and tumor necrosis factor (TNF)-α in RASFs. However, the underlying mechanism by which E2F2 regulates expression of IL-1α, IL-1β, and TNF-α has not been fully elucidated. This study aimed to elucidate this mechanism and confirm the pathological roles of E2F2 in rheumatoid arthritis (RA). Methods E2f2 knockout (KO) and wild-type (WT) mice were injected with collagen to induce RA. Cytokine production was assessed by quantitative real-time polymerase chain reaction (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA). Western blot and qRT-PCR were performed to evaluate the effect of E2F2 on signaling pathway activity. Chromatin immunoprecipitation (ChIP)-PCR and luciferase assays were used to detect the transcriptional activity of target genes of E2F2. Nuclear translocation of STAT1 and p65 were assayed by Western blot, co-immunoprecipitation (co-IP), and immunofluorescence experiments. Results The occurrence and severity of collagen-induced arthritis were decreased in E2f2-KO mice compared with WT mice. The expression of IL-1α, IL-1β, and TNF-α was also suppressed in mouse embryonic fibroblasts (MEFs) from E2f2-KO mice and RASFs with E2F2 knocked down. Mechanistically, we found that E2F2 can upregulate the expression of STAT1 and MyD88 through direct binding to their promoters, facilitate the formation of STAT1/MyD88 complexes, and consequently activate AKT. However, silencing STAT1/MyD88 or inactivating AKT significantly attenuated the induction of IL-1α, IL-1β, and TNF-α caused by the introduction of E2F2. Conclusions This study confirms the pathological role of E2F2 in RA and found that the E2F2-STAT1/MyD88-Akt axis is closely related with the inflammatory phenotype in RASFs.
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Affiliation(s)
- Shiguan Wang
- Medical and Life Science College, University of Jinan, Jinan, 250062, Shandong, China.,Shandong Medicinal Biotechnology Centre, Jingshi Road, Jinan, 250000, Shandong, China.,Key Lab for Biotechnology Drugs of Ministry of Health, Jinan, 250000, Shandong, China
| | - Lin Wang
- Shandong Medicinal Biotechnology Centre, Jingshi Road, Jinan, 250000, Shandong, China.,Key Lab for Biotechnology Drugs of Ministry of Health, Jinan, 250000, Shandong, China.,Key Lab for Rare & Uncommon Diseases, Jinan, 250000, Shandong, China
| | - Changshun Wu
- Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250000, Shandong, China
| | - Shui Sun
- Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250000, Shandong, China
| | - Ji-Hong Pan
- Shandong Medicinal Biotechnology Centre, Jingshi Road, Jinan, 250000, Shandong, China. .,Key Lab for Biotechnology Drugs of Ministry of Health, Jinan, 250000, Shandong, China. .,Key Lab for Rare & Uncommon Diseases, Jinan, 250000, Shandong, China.
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17
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Afzali MF, Popichak KA, Burton LH, Klochak AL, Wilson WJ, Safe S, Tjalkens RB, Legare ME. A novel diindolylmethane analog, 1,1-bis(3'-indolyl)-1-(p-chlorophenyl) methane, inhibits the tumor necrosis factor-induced inflammatory response in primary murine synovial fibroblasts through a Nurr1-dependent mechanism. Mol Immunol 2018; 101:46-54. [PMID: 29870816 DOI: 10.1016/j.molimm.2018.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/10/2018] [Accepted: 05/25/2018] [Indexed: 12/15/2022]
Abstract
The progression of rheumatoid arthritis involves the thickening of the synovial lining due to the proliferation of fibroblast-like synoviocytes (FLS) and infiltration by inflammatory cells. Tumor necrosis factor alpha (TNFα) is a pro-inflammatory cytokine involved in progression of the disease. Under rheumatoid conditions, FLS express the tumor necrosis factor (TNF)-recognition complex (TNFR1, TNFR2, VCAM-1 and ICAM-1), which induces local macrophage activation and leads to downstream nuclear factor κB (NF-κB) signaling. The NF-κB-regulated inflammatory gene, cyclooxygenase (COX), increases synthesis of prostaglandins that contribute to the propagation of inflammatory damage within the joint. Because the nuclear orphan receptor, NR4A2 (Nurr1), can negatively regulate NF-κB-dependent inflammatory gene expression in macrophages, we postulated that activation of this receptor by the Nurr1 ligand 1,1-bis(3'-indolyl)-1-(p-chlorophenyl) methane (C-DIM12) would modulate inflammatory gene expression in synovial fibroblasts by inhibiting NF-κB. Treatment with C-DIM12 suppressed TNFα-induced expression of adhesion molecules and NF-κB regulated genes in primary synovial fibroblasts including vascular adhesion molecule 1 (VCAM-1), PGE2 and COX-2. Immunofluorescence studies indicated that C-DIM12 did not prevent translocation of p65 and stabilized nuclear localization of Nurr1 in synovial fibroblasts. Knockdown of Nurr1 expression by RNA interference prevented the inhibitory effects of C-DIM12 on inflammatory gene expression, indicating that the anti-inflammatory effects of this compound are Nurr1-dependent. Collectively, these data suggest that this receptor may be a viable therapeutic target in RA.
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Affiliation(s)
- Maryam F Afzali
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA
| | - Katriana A Popichak
- Cell & Molecular Biology Program, Colorado State University, Fort Collins, CO, USA
| | - Lindsey H Burton
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA
| | - Anna L Klochak
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA
| | - William J Wilson
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA
| | - Stephen Safe
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, USA
| | - Ronald B Tjalkens
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA
| | - Marie E Legare
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA; Center for Environmental Medicine, Colorado State University, Fort Collins, CO, USA.
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18
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Abstract
The extracellular matrix molecule tenascin-C (TNC) has received a lot of attention since its discovery 30 years ago because of its multiple roles in tissue repair, and in pathologies such as chronic inflammation, fibrosis, and cancer. Mouse models with high or no TNC expression have enabled the validation of key roles for TNC in immunity and angiogenesis. In parallel, many approaches including primary cell or organ cultures have shed light on the cellular and molecular mechanisms by which TNC exerts its multiple actions in vivo. Here, we will describe assays that investigate its antiadhesive properties and that measure the effect of TNC on the actin cytoskeleton, cell survival, proliferation, and migration. We will also describe assays to assess the impact of TNC on endothelial and immune cells in cell and organ culture, and to compare the responses of fibroblasts from normal and diseased tissues.
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Affiliation(s)
- Devadarssen Murdamoothoo
- Inserm U1109, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy (MNT3) Team, Strasbourg, France; Université de Strasbourg, LabEx Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Anja Schwenzer
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Jessica Kant
- Inserm U1109, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy (MNT3) Team, Strasbourg, France; Université de Strasbourg, LabEx Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Tristan Rupp
- Inserm U1109, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy (MNT3) Team, Strasbourg, France; Université de Strasbourg, LabEx Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Anna Marzeda
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Kim Midwood
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom.
| | - Gertraud Orend
- Inserm U1109, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy (MNT3) Team, Strasbourg, France; Université de Strasbourg, LabEx Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.
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19
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Klein K, Frank-Bertoncelj M, Karouzakis E, Gay RE, Kolling C, Ciurea A, Bostanci N, Belibasakis GN, Lin LL, Distler O, Gay S, Ospelt C. The epigenetic architecture at gene promoters determines cell type-specific LPS tolerance. J Autoimmun 2017; 83:122-133. [PMID: 28701277 DOI: 10.1016/j.jaut.2017.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/27/2017] [Accepted: 07/01/2017] [Indexed: 01/11/2023]
Abstract
Synovial fibroblasts (SF) drive inflammation and joint destruction in chronic arthritis. Here we show that SF possess a distinct type of LPS tolerance compared to macrophages and other types of fibroblasts. In SF and dermal fibroblasts, genes that were non-tolerizable after repeated LPS stimulation included pro-inflammatory cytokines, chemokines and matrix metalloproteinases, whereas anti-viral genes were tolerizable. In macrophages, all measured genes were tolerizable, whereas in gingival and foreskin fibroblasts these genes were non-tolerizable. Repeated stimulation of SF with LPS resulted in loss of activating histone marks only in promoters of tolerizable genes. The epigenetic landscape at promoters of tolerizable genes was similar in unstimulated SF and monocytes, whereas the basal configuration of histone marks profoundly differed in genes that were non-tolerizable in SF only. Our data suggest that the epigenetic configuration at gene promoters regulates cell-specific LPS-induced responses and primes SF to sustain their inflammatory response in chronic arthritis.
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Affiliation(s)
- Kerstin Klein
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Mojca Frank-Bertoncelj
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Emmanuel Karouzakis
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Renate E Gay
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | | | - Adrian Ciurea
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Nagihan Bostanci
- Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden; Center of Dental Medicine, University of Zurich, Switzerland.
| | - Georgios N Belibasakis
- Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden; Center of Dental Medicine, University of Zurich, Switzerland.
| | - Lih-Ling Lin
- Inflammation and Immunology Research Unit, Pfizer, Cambridge, MA, USA.
| | - Oliver Distler
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Steffen Gay
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
| | - Caroline Ospelt
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Switzerland.
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20
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Xu J, Liu Y, Deng M, Li J, Cai H, Meng Q, Fang W, Long X, Ke J. MicroRNA221-3p modulates Ets-1 expression in synovial fibroblasts from patients with osteoarthritis of temporomandibular joint. Osteoarthritis Cartilage 2016; 24:2003-2011. [PMID: 27349463 DOI: 10.1016/j.joca.2016.06.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 06/09/2016] [Accepted: 06/13/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study aimed to screen differential expression of microRNAs (miRNAs), and investigate function of the specifically selected miRNA in synovial fibroblasts from patients suffering osteoarthritis of temporomandibular joint (TMJOA). METHODS MiRNA microarray was used to select differentially expressed miRNAs between TMJOA and normal synovial fibroblasts. The expression of screened miRNA221-3p was quantified using real-time PCR, and its specific target gene was predicted by bioinformatics. After transfection of miRNA221-3p mimics or inhibitor into synovial fibroblasts, the expression of v-Ets avian erythroblastosis virus E26 oncogene homolog 1 (Ets-1) was detected by immunohistochemistry, real-time PCR and Western blot, respectively. Dual luciferase activity was performed to identify the direct regulation of miRNA221-3p on Ets-1. Interlukin-1β (IL-1β) mimics an inflammatory situation. RESULTS In TMJOA synovial fibroblasts, eight miRNAs were up-regulated and six miRNAs were down-regulated. MiRNA221-3p was the most down-expressed. A sequence in the 3'-untranslated (3'-UTR) of Ets-1 complementary to the seed sequence of miRNA221-3p. Elevated expression of Ets-1 associated with attenuation of miRNA221-3p. Over-expression of miRNA221-3p suppressed the activity of a reporter construct containing the 3'-UTR of Ets-1 transcript and inhibited the expression of Ets-1 as well as its downstream molecules, matrix metalloproteinase 1 (MMP1) and MMP9 in TMJOA synovial fibroblasts. IL-1β suppressed the expression of miRNA221-3p in both a dose-dependent and time-dependent manner. CONCLUSION The reduction of miRNA221-3p in synovial fibroblasts, attributed from abundance of IL-1β in inflamed circumstance, induces Ets-1 up-regulation and then, initiates MMP1 and MMP9 secretion, thereby leading to continuously pathological development in TMJOA.
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Affiliation(s)
- J Xu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - Y Liu
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei Province, China
| | - M Deng
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - J Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - H Cai
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - Q Meng
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - W Fang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
| | - X Long
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.
| | - J Ke
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.
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21
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Kunanusornchai W, Witoonpanich B, Tawonsawatruk T, Pichyangkura R, Chatsudthipong V, Muanprasat C. Chitosan oligosaccharide suppresses synovial inflammation via AMPK activation: An in vitro and in vivo study. Pharmacol Res 2016; 113:458-467. [PMID: 27650754 DOI: 10.1016/j.phrs.2016.09.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/11/2016] [Accepted: 09/14/2016] [Indexed: 12/12/2022]
Abstract
Synovial inflammation plays an important role in the early pathogenesis of osteoarthritis (OA). Chitosan oligosaccharide (COS) has been shown to activate AMPK and suppress inflammatory responses in intestinal epithelial cells. This study aimed to investigate the effect of COS on AMPK activation and synovial inflammation using both primary cultures of synoviocytes and a rabbit model of anterior cruciate ligament (ACL) transection-induced OA. COS induced AMPK activation in both rabbit and human synoviocytes. The mechanism of COS-induced AMPK activation involves an increase in the ADP/ATP ratio but not calcium/calmodulin-dependent protein kinase kinase beta (CaMKKβ). Interestingly, COS suppressed the TNFα-induced iNOS and COX-2 expression via an AMPK-dependent mechanism in both rabbit and human synoviocytes. Importantly, oral administration of COS (10mg/kg/day) induced AMPK activation and alleviated signs of inflammation including COX-2 expression in the synovium of a rabbit ACL transection model. Taken together, our results indicate that COS suppresses synovial inflammation in vitro and in vivo via AMPK activation. COS may be useful in the prevention of OA.
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Affiliation(s)
- Wanlop Kunanusornchai
- Department of Physiology, Faculty of Science, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand
| | - Bhee Witoonpanich
- Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand
| | - Tulyapruek Tawonsawatruk
- Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand
| | - Rath Pichyangkura
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Phayathai, Bangkok 10330, Thailand
| | - Varanuj Chatsudthipong
- Department of Physiology, Faculty of Science, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand
| | - Chatchai Muanprasat
- Department of Physiology, Faculty of Science, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand; Excellent Center for Drug Discovery (ECDD), Faculty of Science, Mahidol University, Rama VI Road, Rajathevi, Bangkok 10400, Thailand.
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22
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Frederick ED, Hausburg MA, Thomas GW, Rael LT, Brody E, Bar-Or D. The low molecular weight fraction of human serum albumin upregulates COX2, prostaglandin E2, and prostaglandin D2 under inflammatory conditions in osteoarthritic knee synovial fibroblasts. Biochem Biophys Rep 2016; 8:68-74. [PMID: 28955943 PMCID: PMC5613771 DOI: 10.1016/j.bbrep.2016.08.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/10/2016] [Accepted: 08/10/2016] [Indexed: 11/24/2022] Open
Abstract
Background The ability to decrease inflammation and promote healing is important in the intervention and management of a variety of disease states, including osteoarthritis of the knee (OAK). Even though cyclooxygenase 2 (COX2) has an established pro-inflammatory role, evidence suggests it is also critical to the resolution that occurs after the initial activation phase of the immune response. In this study, we investigated the effects of the low molecular weight fraction of 5% human serum albumin (LMWF-5A), an agent that has proven to decrease pain and improve function in OAK patients after intra-articular injection, on the expression of COX2 and its downstream products, prostaglandins (PGs). Methods Fibroblast-like synoviocytes from the synovial membrane of OAK patients were treated with LMWF-5A or saline as a control with or without the addition of interleukin-1β (IL-1β) or tumor necrosis factor α (TNFα) to elicit an inflammatory response. Cells were harvested for RNA and protein at 2, 4, 8, 12, and 24 h, and media was collected at 24 h for analysis of secreted products. COX2 mRNA expression was determined by qPCR, and COX2 protein expression was determined by western blot analysis. Levels of prostaglandin E2 (PGE2) and prostaglandin D2 (PGD2) in the media were quantified by competitive ELISA. Results In the presence of either IL-1β or TNFα, LMWF-5A increased the expression of both COX2 mRNA and protein, and this increase was significant compared to that observed with IL-1β- or TNFα-stimulated, saline-treated cells. Downstream of COX2, the levels of PGE2 were increased only in TNFα-stimulated, LMWF-5A-treated cells; however, in both IL-1β- and TNFα-stimulated cells, LMWF-5A increased the release of the anti-inflammatory prostaglandin PGD2. Conclusion LMWF-5A appears to trigger increased anti-inflammatory PG signaling, and this may be a primary component of its therapeutic mode of action in the treatment of OAK. Proposed mechanism of action for biologic drug to treat osteoarthritis of the knee. LMWF-5A affects the COX2 pathway in primary synoviocytes from osteoarthritic knees. LMWF-5A may promote resolution of inflammation, healing, and cartilage regeneration.
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Key Words
- 15d-PGJ2, 15-deoxy-Δ12,14-prostaglandin J2
- COX, cyclooxygenase
- Cyclooxygenase 2
- DMEM/F12, Dulbecco’s Modified Eagle Medium/Nutrient Mixture F-12
- ELISA, enzyme-linked immunosorbent assay
- FBS, fetal bovine serum
- HSA, human serum albumin
- HSF-OAs, human synovial fibroblasts from patients with osteoarthritis
- Human serum albumin
- IL, interleukin
- IgG, immunoglobulin G
- Inflammation
- LMWF-5A, molecular weight fraction of human serum albumin under 5000 Da
- LOD, limit of detection
- NF-κB, nuclear factor-κB
- NSAIDs, non-steroidal anti-inflammatory drugs
- OA, osteoarthritis
- OAK, osteoarthritis of the knee
- Osteoarthritis
- PBMCs, peripheral blood mononuclear cells
- PG, prostaglandin
- PGD2, prostaglandin D2
- PGE2, prostaglandin E2
- PGH2, prostaglandin H2
- PPARγ, peroxisome proliferator-activated receptor γ
- PVDF, polyvinylidene fluoride
- Prostaglandin
- SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis
- SEM, standard error of the mean
- Synovial fibroblast
- TNF, tumor necrosis factor
- hMSCs, human mesenchymal stem cells
- qPCR, quantitative real-time polymerase chain reaction
- ΔΔCT, comparative threshold cycle
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Affiliation(s)
- Elizabeth D Frederick
- Swedish Medical Center, 501 E. Hampden Ave, Englewood, CO 80113, USA.,Ampio Pharmaceuticals Inc., 373 Inverness Pkwy, Englewood, CO 80112, USA
| | - Melissa A Hausburg
- Swedish Medical Center, 501 E. Hampden Ave, Englewood, CO 80113, USA.,Ampio Pharmaceuticals Inc., 373 Inverness Pkwy, Englewood, CO 80112, USA
| | - Gregory W Thomas
- Swedish Medical Center, 501 E. Hampden Ave, Englewood, CO 80113, USA.,Ampio Pharmaceuticals Inc., 373 Inverness Pkwy, Englewood, CO 80112, USA
| | - Leonard T Rael
- Swedish Medical Center, 501 E. Hampden Ave, Englewood, CO 80113, USA.,Ampio Pharmaceuticals Inc., 373 Inverness Pkwy, Englewood, CO 80112, USA
| | - Edward Brody
- SomaLogic Inc., 2945 Wilderness Place, Boulder, CO 80301, USA
| | - David Bar-Or
- Swedish Medical Center, 501 E. Hampden Ave, Englewood, CO 80113, USA.,Ampio Pharmaceuticals Inc., 373 Inverness Pkwy, Englewood, CO 80112, USA.,St. Anthony Hospital, Trauma Research Department, 11600 W. 2nd Pl, Lakewood, CO 80228, USA.,Medical Center of Plano, Trauma Research Department, 3901 W. 15th St., Plano, TX 75075, USA.,Rocky Vista University, 8401 S. Chambers Rd., Parker, CO 80134, USA.,Penrose Hospital, 2417 Cascade Ave, Colorado Springs, CO 80907, USA
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23
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Pethő Z, Tanner MR, Tajhya RB, Huq R, Laragione T, Panyi G, Gulko PS, Beeton C. Different expression of β subunits of the KCa1.1 channel by invasive and non-invasive human fibroblast-like synoviocytes. Arthritis Res Ther 2016; 18:103. [PMID: 27165430 PMCID: PMC4863321 DOI: 10.1186/s13075-016-1003-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 04/26/2016] [Indexed: 12/20/2022] Open
Abstract
Background Fibroblast-like synoviocytes (FLS) in rheumatoid arthritis (RA-FLS) contribute to joint inflammation and damage characteristic of the disease. RA-FLS express KCa1.1 (BK, Slo1, MaxiK, KCNMA1) as their major plasma membrane potassium channel. Blocking KCa1.1 reduces the invasive phenotype of RA-FLS and attenuates disease severity in animal models of RA. This channel has therefore emerged as a promising therapeutic target in RA. However, the pore-forming α subunit of KCa1.1 is widely distributed in the body, and blocking it induces severe side effects, thus limiting its value as a therapeutic target. On the other hand, KCa1.1 channels can also contain different accessory subunits with restricted tissue distribution that regulate channel kinetics and pharmacology. Identification of the regulatory subunits of KCa1.1 expressed by RA-FLS may therefore provide the opportunity for generating a selective target for RA treatment. Methods Highly invasive RA-FLS were isolated from patients with RA, and FLS from patients with osteoarthritis (OA) were used as minimally invasive controls. The β subunit expression by FLS was assessed by quantitative reverse transcription polymerase chain reactions, Western blotting, and patch-clamp electrophysiology combined with pharmacological agents. FLS were sorted by flow cytometry on the basis of their CD44 expression level for comparison of their invasiveness and with their expression of KCa1.1 α and β subunits. β1 and β3 subunit expression was reduced with small interfering RNA (siRNA) to assess their specific role in KCa1.1α expression and function and in FLS invasiveness. Results We identified functional β1 and β3b regulatory subunits in RA-FLS. KCa1.1 β3b subunits were expressed by 70 % of the cells and were associated with highly invasive CD44high RA-FLS, whereas minimally invasive CD44low RA-FLS and OA-FLS expressed either β1 subunit. Furthermore, we found that silencing the β3 but not the β1 subunit with siRNA reduced KCa1.1 channel density at the plasma membrane of RA-FLS and inhibited RA-FLS invasiveness. Conclusions Our findings suggest the KCa1.1 channel composed of α and β3b subunits as an attractive target for the therapy of RA.
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Affiliation(s)
- Zoltán Pethő
- Department of Molecular Physiology and Biophysics, Mail Stop BCM335, Room S409A, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Mark R Tanner
- Department of Molecular Physiology and Biophysics, Mail Stop BCM335, Room S409A, Baylor College of Medicine, Houston, TX, 77030, USA.,Interdepartmental Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Rajeev B Tajhya
- Department of Molecular Physiology and Biophysics, Mail Stop BCM335, Room S409A, Baylor College of Medicine, Houston, TX, 77030, USA.,Graduate Program in Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Redwan Huq
- Department of Molecular Physiology and Biophysics, Mail Stop BCM335, Room S409A, Baylor College of Medicine, Houston, TX, 77030, USA.,Graduate Program in Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Teresina Laragione
- Division of Rheumatology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Pércio S Gulko
- Division of Rheumatology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Christine Beeton
- Department of Molecular Physiology and Biophysics, Mail Stop BCM335, Room S409A, Baylor College of Medicine, Houston, TX, 77030, USA. .,Biology of Inflammation Center, Baylor College of Medicine, Houston, TX, 77030, USA. .,Center for Drug Discovery, Baylor College of Medicine, Houston, TX, 77030, USA.
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24
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Shimomura K, Kanamoto T, Kita K, Akamine Y, Nakamura N, Mae T, Yoshikawa H, Nakata K. Cyclic compressive loading on 3D tissue of human synovial fibroblasts upregulates prostaglandin E2 via COX-2 production without IL-1β and TNF-α. Bone Joint Res 2014; 3:280-8. [PMID: 25237168 PMCID: PMC4178306 DOI: 10.1302/2046-3758.39.2000287] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Objective Excessive mechanical stress on synovial joints causes osteoarthritis
(OA) and results in the production of prostaglandin E2 (PGE2), a
key molecule in arthritis, by synovial fibroblasts. However, the
relationship between arthritis-related molecules and mechanical
stress is still unclear. The purpose of this study was to examine
the synovial fibroblast response to cyclic mechanical stress using
an in vitro osteoarthritis model. Method Human synovial fibroblasts were cultured on collagen scaffolds
to produce three-dimensional constructs. A cyclic compressive loading
of 40 kPa at 0.5 Hz was applied to the constructs, with or without
the administration of a cyclooxygenase-2 (COX-2) selective inhibitor
or dexamethasone, and then the concentrations of PGE2, interleukin-1β (IL-1β),
tumour necrosis factor-α (TNF-α), IL-6, IL-8 and COX-2 were measured. Results The concentrations of PGE2, IL-6 and IL-8 in the loaded samples
were significantly higher than those of unloaded samples; however,
the concentrations of IL-1β and TNF-α were the same as the unloaded
samples. After the administration of a COX-2 selective inhibitor,
the increased concentration of PGE2 by cyclic compressive loading
was impeded, but the concentrations of IL-6 and IL-8 remained high.
With dexamethasone, upregulation of PGE2, IL-6 and IL-8 was suppressed. Conclusion These results could be useful in revealing the molecular mechanism
of mechanical stress in vivo for a better understanding
of the pathology and therapy of OA. Cite this article: Bone Joint Res 2014;3:280–8.
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Affiliation(s)
- K Shimomura
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - T Kanamoto
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - K Kita
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - Y Akamine
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - N Nakamura
- Osaka Health Science University, Department of Rehabilitation Science, 1-9-27 Tenma, Kita-ku, Osaka City, Osaka 530-0043, Japan
| | - T Mae
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - H Yoshikawa
- Osaka University Graduate School of Medicine, Department of Orthopaedics, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - K Nakata
- Osaka University Graduate School of Medicine, Department of Health and Sport Sciences, 1-17 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
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25
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Sfikakis PP, Christopoulos PF, Vaiopoulos AG, Fragiadaki K, Katsiari C, Kapsimali V, Lallas G, Panayiotidis P, Korkolopoulou P, Koutsilieris M. Cadherin-11 mRNA transcripts are frequently found in rheumatoid arthritis peripheral blood and correlate with established polyarthritis. Clin Immunol 2014; 155:33-41. [PMID: 25173800 DOI: 10.1016/j.clim.2014.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 08/04/2014] [Accepted: 08/19/2014] [Indexed: 01/08/2023]
Abstract
Rheumatoid arthritis (RA) synovial fibroblasts hyperexpress the mesenchymal cadherin-11, which is involved also in tumor invasion/metastasis, whereas anti-cadherin-11 therapeutics prevent and reduce experimental arthritis. To test the hypothesis that cadherin-11 is aberrantly expressed in RA peripheral blood, 100 patients (15 studied serially) and 70 healthy controls were analyzed by real-time reverse transcription-PCR. Cadherin-11 mRNA transcripts were detected in 69.2% of moderately/severely active RA, versus 31.8% of remaining patients (p=0.001), versus 17.1% of controls (p<0.0001). Notably, cadherin-11 positivity correlated significantly and independently only with established (>1year) polyarthritis (>4 swollen tender joints), by multivariate logistic regression analysis including various possible clinical/laboratory factors. Rare cells of undefined nature, detected by flow cytometry following CD45(-) enrichment, strongly expressed surface cadherin-11 (estimated 10-50cells/ml of blood) in 5/6 patients with polyarticular established disease versus 1/6 patients with early RA. Studies on the potential pathogenic role of circulating cells expressing cadherin-11 in RA are warranted.
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Affiliation(s)
- P P Sfikakis
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece.
| | - P F Christopoulos
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece; Department of Physiology, Athens University Medical School, Greece
| | - A G Vaiopoulos
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece; Department of Physiology, Athens University Medical School, Greece
| | - K Fragiadaki
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece
| | - C Katsiari
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece
| | - V Kapsimali
- Department of Microbiology, Athens University Medical School, Greece
| | - G Lallas
- Rheumatology Unit, First Department of Propaedeutic and Internal Medicine, Athens University Medical School, Greece
| | - P Panayiotidis
- Department of Microbiology, Athens University Medical School, Greece
| | - P Korkolopoulou
- Department of Pathology, Athens University Medical School, Greece
| | - M Koutsilieris
- Department of Physiology, Athens University Medical School, Greece
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26
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Moon SJ, Park MK, Oh HJ, Lee SY, Kwok SK, Cho ML, Ju JH, Park KS, Kim HY, Park SH. Engagement of toll-like receptor 3 induces vascular endothelial growth factor and interleukin-8 in human rheumatoid synovial fibroblasts. Korean J Intern Med 2010; 25:429-35. [PMID: 21179282 PMCID: PMC2997973 DOI: 10.3904/kjim.2010.25.4.429] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 03/29/2010] [Accepted: 08/04/2010] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS Angiogenesis, which is a critical step in the initiation and progression of rheumatoid arthritis (RA), involves pro-angiogenic factors, including interleukin (IL)-8 and vascular endothelial growth factor (VEGF). We investigated the role of Toll-like receptor 3 (TLR3) in the regulation of pro-angiogenic factors in RA fibroblast-like synoviocytes (FLS). METHODS FLS were isolated from RA synovial tissues and stimulated with the TLR3 ligand, poly (I:C). The levels of VEGF and IL-8 in the culture supernatants were measured using enzyme-linked immunosorbent assays, and the mRNA levels were assessed by semiquantitative reverse transcription-polymerase chain reaction. The expression patterns of VEGF and IL-8 in the RA synovium and osteoarthritis (OA) synovium were compared using immunohistochemistry. RESULTS The expression levels of TLR3, VEGF, and IL-8 were significantly higher in the RA synovium than in the OA synovium. VEGF and IL-8 production were increased in the culture supernatants of RA FLS stimulated with poly (I:C), and the genes for these proteins were up-regulated at the transcriptional level after poly (I:C) treatment. Treatment with inhibitors of nuclear factor-kappaB (NF-κB), i.e., pyrrolidine dithiocarbamate and parthenolide, abrogated the stimulatory effect of poly (I:C) on the production of VEGF and IL-8 in RA FLS. CONCLUSIONS Our results suggest that the activation of TLR3 in RA FLS promotes the production of proangiogenic factors, in a process that is mediated by the NF-κB signaling pathway. Therefore, targeting the TLR3 pathway may be a promising approach to preventing pathologic angiogenesis in RA.
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Affiliation(s)
- Su-Jin Moon
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Mi-Kyung Park
- Rheumatism Research Center, Catholic Institute of Medical Science, Seoul, Korea
| | - Hye-Jwa Oh
- Rheumatism Research Center, Catholic Institute of Medical Science, Seoul, Korea
| | - Seon-Yeong Lee
- Rheumatism Research Center, Catholic Institute of Medical Science, Seoul, Korea
| | - Seung-Ki Kwok
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Mi-La Cho
- Rheumatism Research Center, Catholic Institute of Medical Science, Seoul, Korea
| | - Ji Hyeon Ju
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Kyung-Su Park
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Ho-Youn Kim
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Sung-Hwan Park
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea
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27
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Kim HR, Park MK, Cho ML, Kim KW, Oh HJ, Park JS, Heo YM, Lee SH, Kim HY, Park SH. Induction of macrophage migration inhibitory factor in ConA-stimulated rheumatoid arthritis synovial fibroblasts through the P38 map kinase-dependent signaling pathway. Korean J Intern Med 2010; 25:317-26. [PMID: 20830230 PMCID: PMC2932946 DOI: 10.3904/kjim.2010.25.3.317] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Revised: 04/20/2010] [Accepted: 05/24/2010] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND/AIMS This study was undertaken to identify the intracellular signaling pathway involved in induction of macrophage migration inhibitory factor (MIF) in human rheumatoid arthritis (RA) synovial fibroblasts. METHODS Human RA synovial fibroblasts were treated with concanavalin A (ConA), various cytokines, and inhibitors of signal transduction molecules. The production of MIF by synovial fibroblasts was measured in culture supernatants by ELISA. The expression of MIF mRNA was determined using reverse transcriptase polymerase chain reaction (RT-PCR) and real-time PCR. Phosphorylation of p38 mitogen-activated protein (MAP) kinase in synovial fibroblasts was confirmed using Western blotting. The expression of MIF and p38 MAP kinase in RA synovium was determined using dual immunohistochemistry. RESULTS The production of MIF by RA synovial fibroblasts increased in a dose-dependent manner after ConA stimulation. MIF was also induced by interferon-γ, CD40 ligand, interleukin-15, interleukin-1β, tumor necrosis factor-α, and transforming growth factor-β. The production of MIF by RA synovial fibroblasts was significantly reduced after inhibition of p38 MAP kinase. The expression of MIF and p38 MAP kinase was upregulated in the RA synovium compared with the osteoarthritis synovium. CONCLUSIONS These results suggest that MIF production was induced through a p38 MAP-kinase-dependent pathway in RA synovial fibroblasts.
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Affiliation(s)
- Hae-Rim Kim
- Division of Rheumatology, Department of Internal Medicine, Konkuk University School of Medicine Seoul, Korea
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