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Hong J, Luo F, Du X, Xian F, Li X. The immune cells in modulating osteoclast formation and bone metabolism. Int Immunopharmacol 2024; 133:112151. [PMID: 38685175 DOI: 10.1016/j.intimp.2024.112151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/10/2024] [Accepted: 04/22/2024] [Indexed: 05/02/2024]
Abstract
Osteoclasts are pivotal in regulating bone metabolism, with immune cells significantly influencing both physiological and pathological processes by modulating osteoclast functions. This is particularly evident in conditions of inflammatory bone resorption, such as rheumatoid arthritis and periodontitis. This review summarizes and comprehensively analyzes the research progress on the regulation of osteoclast formation by immune cells, aiming to unveil the underlying mechanisms and pathways through which diseases, such as rheumatoid arthritis and periodontitis, impact bone metabolism.
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Affiliation(s)
- Jiale Hong
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Fang Luo
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Xingyue Du
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Fa Xian
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Xinyi Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China.
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Lems W, Miceli-Richard C, Haschka J, Giusti A, Chistensen GL, Kocijan R, Rosine N, Jørgensen NR, Bianchi G, Roux C. Bone Involvement in Patients with Spondyloarthropathies. Calcif Tissue Int 2022; 110:393-420. [PMID: 35066596 DOI: 10.1007/s00223-021-00933-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/24/2021] [Indexed: 11/02/2022]
Abstract
Spondyloarthropathies (SpA) are common systemic inflammatory rheumatic diseases, in which, as in other rheumatic diseases, levels of markers of bone resorption are elevated, leading to bone loss and elevated risk of vertebral fractures. However, the diseases are also associated with new bone formation in the spine, the so-called syndesmophytes. We tried to unravel the pathogenesis of formation and growth of syndesmophytes and evaluated new diagnostic and treatment options. After a successful meeting of the Working Group on Rheumatic Diseases at the ECTS 2020, we (WL and CR) were excited about the quality of the speakers (CM, JH, AG, and GL) and their complimentary lectures. Given the relative lack of reviews on spondyloarthropathies and bone, we decided to work together on a comprehensive review that might be interesting for basic scientists and clinically relevant for clinicians. Radiographic progression in axSpA is linked to several risk factors, like male sex, smoking, HLA-B-27, increased levels of CRP, presence of syndesmophytes, and marked inflammation on MRI. The potential role of mechanical stress in the context of physically demanding jobs has been also suggested to promote structural damages. Different treatment options from NSAIDs to biologic agents like TNF inhibitors (TNFi) or IL-17inhibitors (IL-17i) result in a reduction of inflammation and symptoms. However, all these different treatment options failed to show clear and reproducible results on inhibition on syndesmophyte formation. The majority of data are available on TNFi, and some studies suggested an effect in subgroups of patients with ankylosing spondylitis. Less information is available on NSAIDs and IL-17i. Since IL-17i have been introduced quite recently, more studies are expected. IL-17 inhibitors (Il-17i) potently reduce signs and symptoms, but serum level of IL-17 is not elevated, therefore, IL-17 probably has mainly a local effect. The failure of anti-IL-23 in axSpA suggests that IL-17A production could be independent from IL-23. It may be upregulated by TNFα, resulting in lower expression of DKK1 and RANKL and an increase in osteogenesis. In active AS markers of bone resorption are increased, while bone formation markers can be increased or decreased. Bone Turnover markers and additional markers related to Wnt such as DKK1, sclerostin, and RANKL are valuable for elucidating bone metabolism on a group level and they are not (yet) able to predict individual patient outcomes. The gold standard for detection of structural lesions in clinical practice is the use of conventional radiographics. However, the resolution is low compared to the change over time and the interval for detecting changes are 2 years or more. Modern techniques offer substantial advantages such as the early detection of bone marrow edema with MRI, the fivefold increased detection rate of new or growing syndesmophytes with low-dose CT, and the decrease in 18F-fluoride uptake during treatment with TNFα-inhibitors (TNFi) in a pilot study in 12 AS patients. Detection of bone involvement by new techniques, such as low-dose CT, MRI and 18-Fluoride PET-scans, and bone turnover markers, in combination with focusing on high-risk groups such as patients with early disease, elevated CRP, syndesmophytes at baseline, male patients and patients with HLA-B27 + are promising options for the near future. However, for optimal prevention of formation of syndesmophytes we need more detailed insight in the pathogenesis of bone formation in axSpA and probably more targeted therapies.
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Affiliation(s)
- Willem Lems
- Amsterdam University Medical Center, Location VUmc, Amsterdam, the Netherlands.
| | - Corinne Miceli-Richard
- INSERM U 1153, Université de Paris-APHP.Centre, Service de Rhumatologie, Hopital Cochin, Paris, France
- Immunoregulation Unit, Department of Immunology, Institut Pasteur, Paris, France
| | - Judith Haschka
- I Medical Department, Ludwig Boltzmann Institute of Osteology, Hanusch Hospital of OEGK & Hanusch Hospital Vienna, Heinrich-Collin-Straße 30, 1140, Vienna, Austria
- Karl Landsteiner Institute for Rheumatology and Gastroenterology, Rheuma-Zentrum Wien-Oberlaa, 1100, Vienna, Austria
| | - Andrea Giusti
- Rheumatology Unit, Department of Medical Specialties, Local Health Trust 3, Via Missolungi 14, 16147, Genoa, Italy
| | | | - Roland Kocijan
- Medical Faculty of Bone Diseases, Sigmund Freud University Vienna, Freudplatz 1, 1020, Vienna, Austria
| | - Nicolas Rosine
- INSERM U 1153, Université de Paris-APHP.Centre, Service de Rhumatologie, Hopital Cochin, Paris, France
- Sorbonne Université, Service de Rhumatologie Hôpital Pitié Salpêtrière, APHP, Paris, France
| | | | - Gerolamo Bianchi
- Rheumatology Unit, Department of Medical Specialties, Local Health Trust 3, Via Missolungi 14, 16147, Genoa, Italy
| | - Christian Roux
- INSERM U 1153, Université de Paris-APHP.Centre, Service de Rhumatologie, Hopital Cochin, Paris, France
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Gulino GR, Van Mechelen M, Lories R. Cellular and molecular diversity in spondyloarthritis. Semin Immunol 2021; 58:101521. [PMID: 34763975 DOI: 10.1016/j.smim.2021.101521] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/03/2021] [Indexed: 12/14/2022]
Abstract
The spondyloarthritides are a cluster of inflammatory rheumatic diseases characterized by different diagnostic entities with heterogeneous phenotypes. The current classification system groups spondyloarthritis patients in two main categories, axial and peripheral spondyloarthritis, providing a framework wherein the clinical picture guides the treatment. However, the heterogeneity of the clinical manifestations of the pathologies, even when residing in the same group, highlights the importance of analyzing the smallest features of each entity to understand how different cellular subsets evolve, what the underlying mechanisms are and what biological markers can be identified and validated to evaluate the stage of disease and the corresponding efficacy of treatments. In this review, we will focus mostly on axial spondyloarthritis, report current knowledge concerning the cellular populations involved in its pathophysiology, and their molecular diversity. We will discuss the implications of such a diversity, and their meaning in terms of patients' stratification.
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Affiliation(s)
- G R Gulino
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, Laboratory of Tissue Homeostasis and Disease, KU Leuven, Belgium
| | - M Van Mechelen
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, Laboratory of Tissue Homeostasis and Disease, KU Leuven, Belgium; Division of Rheumatology, University Hospitals Leuven, Belgium
| | - R Lories
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, Laboratory of Tissue Homeostasis and Disease, KU Leuven, Belgium; Division of Rheumatology, University Hospitals Leuven, Belgium.
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Liu L, Yuan Y, Zhang S, Xu J, Zou J. Osteoimmunological insights into the pathogenesis of ankylosing spondylitis. J Cell Physiol 2021; 236:6090-6100. [PMID: 33559242 DOI: 10.1002/jcp.30313] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 01/10/2021] [Accepted: 01/25/2021] [Indexed: 12/12/2022]
Abstract
Ankylosing spondylitis (AS) is inflammatory arthritis predominantly affecting the spine, which is involved in the disorders of both immune and skeletal systems. The exact pathogenesis of AS is not fully understood. Osteoimmunology is a new subject of study in inflammatory arthritis, in particular the pathogenic events involved in the cross-regulation of both skeletal and immune systems. In this review, we discuss osteoimmunological and pathological changes of AS in the spine that are characterized by altered osteogenesis and osteolytic bone destruction, accompanied by the changes of the immune system. It was revealed that bone cells like mesenchymal stem cells, osteoblast, and osteoclast in crossing talking with immune cells such as T cells, B cells coregulate to the pathogenesis of AS. Further, an array of cytokines and molecules expressed by both skeletal and immune systems contribute to these complex interplays. Understanding the cellular and molecular mechanisms underlying the pathogenesis of AS will lay a foundation for the exploration of the potential new treatment to AS.
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Affiliation(s)
- Lifei Liu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China.,Department of Rehabilitation, The People's Hospital of Liaoning Province, Shenyang, China
| | - Yu Yuan
- School of Sport and Health, Guangzhou Sport University, Guangzhou, China
| | - Shihua Zhang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Jiake Xu
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Jun Zou
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
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Yao D, Huang L, Ke J, Zhang M, Xiao Q, Zhu X. Bone metabolism regulation: Implications for the treatment of bone diseases. Biomed Pharmacother 2020; 129:110494. [PMID: 32887023 DOI: 10.1016/j.biopha.2020.110494] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/24/2020] [Accepted: 06/30/2020] [Indexed: 12/17/2022] Open
Abstract
Bone cells in the human body are continuously engaged in cellular metabolism, including the interaction between bone cells, the interaction between the erythropoietic cells of the bone marrow and stromal cells, for the remodeling and reconstruction of bone. Osteoclasts and osteoblasts play an important role in bone metabolism. Diseases occur when bone metabolism is abnormal, but little is known about the signaling pathways that affect bone metabolism. The study of these signaling pathways will help us to use the relevant techniques to intervene, so as to improve the condition. The study of these signaling pathways will help us to use the relevant techniques to intervene, so as to improve the condition. I believe they will shine in the diagnosis and treatment of future clinical bone diseases.
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Affiliation(s)
- Danqi Yao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China
| | - Lianfang Huang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China
| | - Jianhao Ke
- College of Agriculture, South China Agricultural University, Guangzhou 510046, China
| | - Ming Zhang
- Department of Physical Medicine and Rehabilitation, Zibo Central Hospital, Shandong University, Zibo 255000, China.
| | - Qin Xiao
- Department of Blood Transfusion, Peking University Shenzhen Hospital, Shenzhen 518036, China.
| | - Xiao Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, 524023, China.
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Kwon OC, Choi B, Lee E, Park J, Lee E, Kim E, Kim S, Shin M, Kim T, Hong S, Lee C, Yoo B, Robinson WH, Kim Y, Chang E. Negative Regulation of Osteoclast Commitment by Intracellular Protein Phosphatase Magnesium‐Dependent 1A. Arthritis Rheumatol 2020; 72:750-760. [DOI: 10.1002/art.41180] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 11/21/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Oh Chan Kwon
- University of Ulsan College of MedicineAsan Medical Center, and Yonsei University College of Medicine Seoul Republic of Korea
| | - Bongkun Choi
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Eun‐Jin Lee
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Ji‐Eun Park
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Eun‐Ju Lee
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Eun‐Young Kim
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Sang‐Min Kim
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Min‐Kyung Shin
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Tae‐Hwan Kim
- Hanyang University Hospital for Rheumatic Diseases Seoul Republic of Korea
| | - Seokchan Hong
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Chang‐Keun Lee
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Bin Yoo
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | | | - Yong‐Gil Kim
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
| | - Eun‐Ju Chang
- University of Ulsan College of Medicine and Asan Medical Center Seoul Republic of Korea
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Caparbo VF, Saad CGS, Moraes JC, de Brum-Fernandes AJ, Pereira RMR. Monocytes from male patients with ankylosing spondylitis display decreased osteoclastogenesis and decreased RANKL/OPG ratio. Osteoporos Int 2018; 29:2565-2573. [PMID: 30006885 DOI: 10.1007/s00198-018-4629-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 07/02/2018] [Indexed: 11/25/2022]
Abstract
UNLABELLED The present study investigates the osteoclastogenic capacity of peripheral blood mononuclear cells (PBMCs) in male patients with ankylosing spondylitis (AS). We demonstrated that monocytes from these patients display a lower capacity to generate osteoclasts compared to cells from healthy controls, and osteoclastogenesis was negatively correlated with disease duration. INTRODUCTION Ankylosing spondylitis (AS) is a disease characterized by new bone growth that leads to syndesmophyte formation but AS patients frequently present with low bone mineral density/fractures. Osteoclastogenesis in AS patients is poorly studied and controversial. The aim of this study is to determine if the osteoclastogenic capacity of PBMCs is different in AS patients compared to controls and the relationship between osteoclastogenesis and clinical/laboratory parameters. METHODS PBMCs from 85 male AS patients and 59 controls were tested for CD16+ cells and induced to differentiate into osteoclasts over 3 weeks in vitro. Serum levels of RANKL, osteoprotegerin (OPG), C-terminal telopeptide of type I collagen (CTX), and amino-terminal pro-peptide of type I collagen (P1NP) were also evaluated. RESULTS PBMCs from AS patients had fewer CD16+ cells and produced fewer osteoclasts compared to controls. Apoptosis occurred less frequently in osteoclasts obtained from AS patients than in osteoclasts from the controls. A lower RANKL/OPG and CTX/P1NP were observed in AS patients compared to controls. AS patients taking NSAIDs presented no difference regarding the number of OCs produced and the percentage of CD16+ cells compared to controls. However, patients taking TNF inhibitors (TNFi) presented lower OC numbers than controls. A negative correlation was demonstrated between the number of osteoclasts generated from PBMCs of AS patients and disease duration. CONCLUSION Monocytes from male AS patients display a lower capacity to generate osteoclasts in vitro compared to cells from controls. Osteoclastogenesis was negatively correlated with disease duration. This finding supports the idea that osteoclasts play a role in the physiopathology of bone disease in AS patients.
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Affiliation(s)
- V F Caparbo
- Bone Metabolism Laboratory, Rheumatology Division, Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, Av. Dr. Arnaldo, 455, 3° andar, sala 3193, São Paulo, SP, 01246-903, Brazil
| | - C G S Saad
- Bone Metabolism Laboratory, Rheumatology Division, Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, Av. Dr. Arnaldo, 455, 3° andar, sala 3193, São Paulo, SP, 01246-903, Brazil
| | - J C Moraes
- Bone Metabolism Laboratory, Rheumatology Division, Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, Av. Dr. Arnaldo, 455, 3° andar, sala 3193, São Paulo, SP, 01246-903, Brazil
| | - A J de Brum-Fernandes
- Département de médecine, Service de Rhumatologie, Faculté de médecine et des sciences de la santé Université de Sherbrooke, Sherbrooke, Canada
| | - R M R Pereira
- Bone Metabolism Laboratory, Rheumatology Division, Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, Av. Dr. Arnaldo, 455, 3° andar, sala 3193, São Paulo, SP, 01246-903, Brazil.
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Xu Z, Wang X, Zheng Y. Screening for key genes and transcription factors in ankylosing spondylitis by RNA-Seq. Exp Ther Med 2017; 15:1394-1402. [PMID: 29434723 PMCID: PMC5774495 DOI: 10.3892/etm.2017.5556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 07/07/2017] [Indexed: 12/14/2022] Open
Abstract
Ankylosing spondylitis (AS) is a chronic inflammatory arthritis and autoimmune disease, the etiology and pathogenesis of which remain largely unknown. In the present study, blood samples were harvested from patients with AS and from healthy volunteers as a normal control (NC) for RNA-sequencing. Differentially expressed genes (DEGs) in the AS group compared with the NC group were identified, and gene ontology (GO) term and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were subsequently performed. Protein-protein interaction (PPI) network and AS-specific transcriptional regulatory network construction was performed for the DEGs. A total of 503 DEGs, including 338 upregulated and 165 downregulated DEGs, were identified in patients with AS compared with the NC group. Three upregulated DEGs identified, interferon-induced protein with tetratricopeptide repeats (IFIT)1, IFIT3 and radical S-adenosyl methionine domain containing (RSAD)2, are interferon (IFN)-stimulated genes that serve a role in the IFN signaling pathway. The most significantly enriched GO term was response to other organisms. Osteoclast differentiation was a significantly enriched pathway for eight DEGs [High affinity immunoglobulin gamma Fc receptor (FCGR)1A, FCGR2B, four and a half LIM domains 2, integrin β3, signal transducer and activator of transcription 2 (STAT2), suppressor of cytokine signaling 3 (SOCS3), leukocyte immunoglobulin like receptor (LILR)A4 and LILRA6]. The six hub genes in the PPI network constructed were interferon-stimulated gene 15, heat shock protein β1, microtubule-associated proteins 1A/1B light chain 3A, IFIT1, IFIT3 and SOCS3. POU domain class 2 transcription factor 1 (1-Oct) and ecotropic virus integration site-1 (Evi-1) were identified as two important transcription factors (TFs) in AS according to the AS-specific transcriptional regulatory network constructed. In addition, IFIT1 and IFIT3 were identified as targets of 1-Oct. The results of the present study indicate that osteoclast differentiation, the IFN signaling pathway and genes associated with these two signaling pathways, particularly FCGR2B, STAT2, SOCS3, IFIT1 and IFIT3, may serve a role in AS. In addition, Evi-1 and 1-Oct may be two important TFs associated with AS. These results may provide a basis for elucidating the underlying mechanisms of and developing novel treatments for AS.
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Affiliation(s)
- Zhongyang Xu
- Department of Orthopedics, Shandong University Qilu Hospital, Jinan, Shandong 250012, P.R. China.,Department of Orthopedics, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Xiuyu Wang
- Department of Anesthesia, Shandong University Qilu Hospital, Jinan, Shandong 250012, P.R. China
| | - Yanping Zheng
- Department of Orthopedics, Shandong University Qilu Hospital, Jinan, Shandong 250012, P.R. China
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Perpétuo IP, Caetano-Lopes J, Rodrigues AM, Campanilho-Marques R, Ponte C, Canhão H, Ainola M, Fonseca JE. Methotrexate and low-dose prednisolone downregulate osteoclast function by decreasing receptor activator of nuclear factor-κβ expression in monocytes from patients with early rheumatoid arthritis. RMD Open 2017; 3:e000365. [PMID: 28955481 PMCID: PMC5604603 DOI: 10.1136/rmdopen-2016-000365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 03/22/2017] [Accepted: 03/27/2017] [Indexed: 11/25/2022] Open
Abstract
Objective Rheumatoid arthritis (RA) is a systemic, immune-mediated inflammatory disease that ultimately leads to bone erosions and joint destruction. Methotrexate (MTX) slows bone damage but the mechanism by which it acts is still unknown. In this study, we aimed to assess the effect of MTX and low-dose prednisolone (PDN) on circulating osteoclast (OC) precursors and OC differentiation in patients with RA. Methods Patients with RA before and at least 6 months after MTX therapy were analysed and compared with healthy donors. A blood sample was collected in order to assess receptor activator of NF-κβ (RANK) ligand surface expression on circulating leucocytes and frequency and phenotype of monocyte subpopulations. Quantification of serum levels of bone turnover markers and cytokines and OC differentiation assays were performed. Results Classical activation markers of monocytes and RANK increased in patients with RA at baseline, compared with control healthy donors, and after MTX and low-dose PDN (MTX+PDN) exposure they decreased to control levels. Although the number of OC was not different between groups, the percentage of resorbed area and the resorbed area per pit reduced after treatment. Serum soluble receptor activator of nuclear factor-kappa (RANKL) levels increased at baseline compared with healthy donors and normalised after therapy. Conclusion Our results suggest that MTX+PDN play an important role in downregulating OC function, which we believe occurs through the decrease in RANK surface expression in monocytes.
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Affiliation(s)
- Inês Pedro Perpétuo
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Joana Caetano-Lopes
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Ana Maria Rodrigues
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Raquel Campanilho-Marques
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Department of Rheumatology, Centro Hospitalar de Lisboa Norte, EPE, Hospital de Santa Maria, Lisboa, Portugal
| | - Cristina Ponte
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Department of Rheumatology, Centro Hospitalar de Lisboa Norte, EPE, Hospital de Santa Maria, Lisboa, Portugal
| | - Helena Canhão
- EpiDoC Unit, CEDOC, NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Mari Ainola
- Department of Medicine, Clinicum, University of Helsinki, Helsinki, Finland
| | - João Eurico Fonseca
- Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Department of Rheumatology, Centro Hospitalar de Lisboa Norte, EPE, Hospital de Santa Maria, Lisboa, Portugal
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Szentpétery Á, Horváth Á, Gulyás K, Pethö Z, Bhattoa HP, Szántó S, Szücs G, FitzGerald O, Schett G, Szekanecz Z. Effects of targeted therapies on the bone in arthritides. Autoimmun Rev 2017; 16:313-320. [DOI: 10.1016/j.autrev.2017.01.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 12/07/2016] [Indexed: 12/17/2022]
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11
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Effect of Tumor Necrosis Factor Inhibitor Therapy on Osteoclasts Precursors in Rheumatoid Arthritis. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2690402. [PMID: 28286757 PMCID: PMC5327780 DOI: 10.1155/2017/2690402] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 01/04/2017] [Indexed: 12/23/2022]
Abstract
Objective. Tumor necrosis factor (TNF) increases circulating osteoclast (OC) precursors numbers by promoting their proliferation and differentiation. The aim of this study was to assess the effect of TNF inhibitors (TNFi) on the differentiation and activity of OC in rheumatoid arthritis (RA) patients. Methods. Seventeen RA patients treated with TNFi were analyzed at baseline and after a minimum follow-up period of 6 months. Blood samples were collected to assess receptor activator of nuclear factor kappa-B ligand (RANKL) surface expression on circulating leukocytes and frequency and phenotype of monocyte subpopulations. Quantification of serum levels of bone turnover markers, in vitro OC differentiation assays, and qRT-PCR for OC specific genes was performed. Results. After TNFi therapy, patients had reduced RANKL surface expression in B-lymphocytes and the frequency of circulating classical CD14brightCD16− monocytes was decreased. Serum levels of sRANKL, sRANKL/OPG ratio, and CTX-I were reduced in RA patients after TNFi treatment. Moreover, after exposure to TNFi, osteoclast differentiation and activity were decreased, as well as the expression of TRAF6 and cathepsin K. Conclusion. We propose that TNFi arrests bone loss and erosion, through two pathways: direct reduction of osteoclast precursor numbers and inhibition of intracellular signaling pathways acting through TRAF6.
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Perpétuo IP, Caetano-Lopes J, Vieira-Sousa E, Campanilho-Marques R, Ponte C, Canhão H, Ainola M, Fonseca JE. Ankylosing Spondylitis Patients Have Impaired Osteoclast Gene Expression in Circulating Osteoclast Precursors. Front Med (Lausanne) 2017; 4:5. [PMID: 28191455 PMCID: PMC5269449 DOI: 10.3389/fmed.2017.00005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/09/2017] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Ankylosing spondylitis (AS) is typically characterized by focal bone overgrowth and also by systemic bone loss. We hypothesize that the increased osteoproliferation found in AS might be partially due to reduced ability of osteoclast precursors (OCPs) to differentiate into osteoclasts (OCs). Therefore, our aim was to characterize bone remodeling and pro-osteoclastogenesis inflammatory environment, monocytes' phenotype, and in vitro osteoclast differentiation in AS patients. METHODS Patients with active AS without any ongoing therapy and age- and gender-matched healthy donors were recruited. Receptor activator of nuclear factor-κβ (RANKL) surface expression on circulating leukocytes and frequency and phenotype of monocyte subpopulations were assessed. Quantification of serum levels of bone turnover markers and cytokines, in vitro OC differentiation assay and quantitative reverse transcription real-time PCR for OC-specific genes were performed. RESULTS Pro- and anti-inflammatory cytokine serum levels were higher in AS patients than in controls. RANKL neutrophil expression was higher in AS patients when compared to healthy donors, but CD51/CD61 expression was lower in the classical monocyte subpopulation. Concerning osteoclastogenesis, we found no differences in the in vitro osteoclast differentiating potential of these cells when compared to healthy donors. However, we observed low expression of CSF1R, RANK, and NFATc1 in AS OCPs. CONCLUSION Despite the high levels of pro-inflammatory cytokines present in AS patients, no differences in the number of OC or resorbed area were found between AS patients and healthy donors. Moreover, we observed that OCPs have low OC-specific gene expression. These findings support our hypothesis of an impaired response of OCPs to pro-osteoclastogenic stimuli in vivo in AS patients.
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Affiliation(s)
- Inês P Perpétuo
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| | - Joana Caetano-Lopes
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| | - Elsa Vieira-Sousa
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE, Lisbon Academic Medical Centre, Lisboa, Portugal
| | - Raquel Campanilho-Marques
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE, Lisbon Academic Medical Centre, Lisboa, Portugal
| | - Cristina Ponte
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE, Lisbon Academic Medical Centre, Lisboa, Portugal
| | - Helena Canhão
- EpiDoC Unit, Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa , Lisboa , Portugal
| | - Mari Ainola
- Musculoskeletal Diseases and Inflammation Research Group, Biomedicum Helsinki 1, Faculty of Medicine, Institute of Clinical Medicine, University of Helsinki , Helsinki , Finland
| | - João E Fonseca
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE, Lisbon Academic Medical Centre, Lisboa, Portugal
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