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Zhao J, Liu Y, Shi X, Dang J, Liu Y, Li S, Cai W, Hou Y, Zeng D, Chen Y, Yuan J, Xiong Y, Wu W, Cai P, Chen J, Sun J, Shao Y, Brand DD, Zheng SG. Infusion of GMSCs relieves autoimmune arthritis by suppressing the externalization of neutrophil extracellular traps via PGE2-PKA-ERK axis. J Adv Res 2024; 58:79-91. [PMID: 37169220 PMCID: PMC10982864 DOI: 10.1016/j.jare.2023.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/21/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023] Open
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a systemic autoimmune disease with limited treatment success, characterized by chronic inflammation and progressive cartilage and bone destruction. Accumulating evidence has shown that neutrophil extracellular traps (NETs) released by activated neutrophils are important for initiating and perpetuating synovial inflammation and thereby could be a promising therapeutic target for RA. K/B × N serum transfer-induced arthritis (STIA) is a rapidly developed joint inflammatory model that somehow mimics the inflammatory response in patients with RA. Human gingival-derived mesenchymal stem cells (GMSCs) have been previously shown to possess immunosuppressive effects in arthritis and humanized animal models. However, it is unknown whether GMSCs can manage neutrophils in autoimmune arthritis. OBJECTIVES To evaluate whether infusion of GMSCs can alleviate RA by regulating neutrophils and NETs formation. If this is so, we will explore the underlying mechanism(s) in an animal model of inflammatory arthritis. METHODS The effects of GMSCs on RA were assessed by comparing the symptoms of the K/B × N serum transfer-induced arthritis (STIA) model administered either with GMSCs or with control cells. Phenotypes examined included clinical scores, rear ankle thickness, paw swelling, inflammation, synovial cell proliferation, and immune cell frequency. The regulation of GMSCs on NETs was examined through immunofluorescence and immunoblotting in GMSCs-infused STIA mice and in an in vitro co-culture system of neutrophils with GMSCs. The molecular mechanism(s) by which GMSCs regulate NETs was explored both in vitro and in vivo by silencing experiments. RESULTS We found in this study that adoptive transfer of GMSCs into STIA mice significantly ameliorated experimental arthritis and reduced neutrophil infiltration and NET formation. In vitro studies also showed that GMSCs inhibited the generation of NETs in neutrophils. Subsequent investigations revealed that GMSCs secreted prostaglandin E2 (PGE2) to activate protein kinase A (PKA), which ultimately inhibited the downstream extracellular signal-regulated kinase (ERK) pathway that is essential for NET formation. CONCLUSION Our results demonstrate that infusion of GMSCs can ameliorate inflammatory arthritis mainly by suppressing NET formation via the PGE2-PKA-ERK signaling pathway. These findings further support the notion that the manipulation of GMSCs is a promising stem cell-based therapy for patients with RA and other autoimmune and inflammatory diseases.
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Affiliation(s)
- Jun Zhao
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yan Liu
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Xiaoyi Shi
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Junlong Dang
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Yu Liu
- Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin 541000, China
| | - Siwen Li
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Wei Cai
- Department of Neurology, Mental and Neurological Disease Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yuluan Hou
- Division of Stomatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Donglan Zeng
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Ye Chen
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jia Yuan
- Division of Stomatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yiding Xiong
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Wenbin Wu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Peihong Cai
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jingrong Chen
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jianbo Sun
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China
| | - Yiming Shao
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China
| | - David D Brand
- The Lt. Col. Luke Weathers, Jr. VA Medical Center, Memphis, TN 38163, United States
| | - Song Guo Zheng
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China; The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China.
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Chen Y, Teng Y, Xu P, Wang S. The Role of Citrullination Modification in CD4 + T Cells in the Pathogenesis of Immune-Related Diseases. Biomolecules 2024; 14:400. [PMID: 38672418 PMCID: PMC11047979 DOI: 10.3390/biom14040400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/28/2024] Open
Abstract
The post-translational modifications (PTMs) of proteins play a crucial role in increasing the functional diversity of proteins and are associated with the pathogenesis of various diseases. This review focuses on a less explored PTM called citrullination, which involves the conversion of arginine to citrulline. This process is catalyzed by peptidyl arginine deiminases (PADs). Different members of the PAD family have distinct tissue distribution patterns and functions. Citrullination is a post-translational modification of native proteins that can alter their structure and convert them into autoantigens; thus, it mediates the occurrence of autoimmune diseases. CD4+ T cells, including Th1, Th2, and Th17 cells, are important immune cells involved in mediating autoimmune diseases, allergic reactions, and tumor immunity. PADs can induce citrullination in CD4+ T cells, suggesting a role for citrullination in CD4+ T cell subset differentiation and function. Understanding the role of citrullination in CD4+ T cells may provide insights into immune-related diseases and inflammatory processes.
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Affiliation(s)
- Yuhang Chen
- Department of Laboratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China;
- Jiangsu Key Laboratory of Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Yi Teng
- Jiangsu Key Laboratory of Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Ping Xu
- Department of Laboratory Medicine, The Fifth People’s Hospital of Suzhou, Suzhou 215505, China
| | - Shengjun Wang
- Department of Laboratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China;
- Jiangsu Key Laboratory of Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, China
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Thirugnanasambandham I, Radhakrishnan A, Kuppusamy G, Kumar Singh S, Dua K. PEPTIDYLARGININE DEIMINASE-4: MEDICO-FORMULATIVE STRATEGY TOWARDS MANAGEMENT OF RHEUMATOID ARTHRITIS. Biochem Pharmacol 2022; 200:115040. [DOI: 10.1016/j.bcp.2022.115040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 12/15/2022]
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Impact of Posttranslational Modification in Pathogenesis of Rheumatoid Arthritis: Focusing on Citrullination, Carbamylation, and Acetylation. Int J Mol Sci 2021; 22:ijms221910576. [PMID: 34638916 PMCID: PMC8508717 DOI: 10.3390/ijms221910576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 12/24/2022] Open
Abstract
Rheumatoid arthritis (RA) is caused by prolonged periodic interactions between genetic, environmental, and immunologic factors. Posttranslational modifications (PTMs) such as citrullination, carbamylation, and acetylation are correlated with the pathogenesis of RA. PTM and cell death mechanisms such as apoptosis, autophagy, NETosis, leukotoxic hypercitrullination (LTH), and necrosis are related to each other and induce autoantigenicity. Certain microbial infections, such as those caused by Porphyromonasgingivalis, Aggregatibacter actinomycetemcomitans, and Prevotella copri, can induce autoantigens in RA. Anti-modified protein antibodies (AMPA) containing anti-citrullinated protein/peptide antibodies (ACPAs), anti-carbamylated protein (anti-CarP) antibodies, and anti-acetylated protein antibodies (AAPAs) play a role in pathogenesis as well as in prediction, diagnosis, and prognosis. Interestingly, smoking is correlated with both PTMs and AMPAs in the development of RA. However, there is lack of evidence that smoking induces the generation of AMPAs.
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Liu X, Arfman T, Wichapong K, Reutelingsperger CPM, Voorberg J, Nicolaes GAF. PAD4 takes charge during neutrophil activation: Impact of PAD4 mediated NET formation on immune-mediated disease. J Thromb Haemost 2021; 19:1607-1617. [PMID: 33773016 PMCID: PMC8360066 DOI: 10.1111/jth.15313] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Peptidyl arginine deiminase 4 (PAD4) is an enzyme that converts arginine into citrulline. PAD4 is expressed in neutrophils that, when activated, can drive the formation of neutrophil extracellular traps (NETs). Uncontrolled activation of PAD4 and subsequent citrullination of proteins is increasingly recognized as a driver of (auto)immune diseases. Currently, our understanding of PAD4 structure-function relationships and activity control in vivo is incomplete. AIMS To provide the current state-of-the-art on PAD4 structure-activity relationships and involvement of PAD4 in autoimmune disorders as well as in thrombo-inflammatory disease. MATERIALS & METHODS Literature review and molecular modelling Results: In this review, we used molecular modelling to generate a three-dimensional structure of the complete PAD4 molecule. Using our model, we discuss the catalytic conversion of the arginine substrate to citrulline. Besides mechanistic insight into PAD4 function, we give an overview of biological functions of PAD4 and mechanisms that influence its activation. In addition, we discuss the crucial role of PAD4-mediated citrullination of histones during the formation of NETs. Subsequently, we focus on the role of PAD4-mediated NET formation and its role in pathogenesis of rheumatoid arthritis, sepsis and (immune-)thrombosis. Finally, we summarize current efforts to design different classes of PAD4 inhibitors that are being developed for improved treatment of autoimmune disorders as well as thrombo-inflammatory disease. DISCUSSION Advances in PAD4 structure-function are still necessary to gain a complete insight in mechanisms that control PAD4 activity in vivo. The involvement of PAD4 in several diseases signifies the need for a PAD4 inhibitor. Although progress has been made to produce an isotype specific and potent PAD4 inhibitor, currently no PAD4 inhibitor is ready for clinical use. CONCLUSION More research into PAD4 structure and function and into the regulation of its activity is required for the development of PAD4 specific inhibitors that may prove vital to combat and prevent autoimmune disorders and (thrombo)inflammatory disease.
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Affiliation(s)
- Xiaosong Liu
- Department of BiochemistryCardiovascular Research Institute Maastricht (CARIM), Maastricht UniversityMaastrichtThe Netherlands
| | - Tom Arfman
- Department of Molecular and Cellular HaemostasisSanquin Research and Landsteiner LaboratoryAmsterdamThe Netherlands
| | - Kanin Wichapong
- Department of BiochemistryCardiovascular Research Institute Maastricht (CARIM), Maastricht UniversityMaastrichtThe Netherlands
| | - Chris P. M. Reutelingsperger
- Department of BiochemistryCardiovascular Research Institute Maastricht (CARIM), Maastricht UniversityMaastrichtThe Netherlands
| | - Jan Voorberg
- Department of Molecular and Cellular HaemostasisSanquin Research and Landsteiner LaboratoryAmsterdamThe Netherlands
| | - Gerry A. F. Nicolaes
- Department of BiochemistryCardiovascular Research Institute Maastricht (CARIM), Maastricht UniversityMaastrichtThe Netherlands
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Tani K, Kanamori M, Nagase Y, Okura Y, Kawaminami S, Kawahito K, Inaba K, Inaba K, Miyatake A, Kondo K, Tabata R, Suzuki Y, Yamaguchi H. Past infections are associated with low levels of anti-citrullinated protein autoantibodies in rheumatoid arthritis. THE JOURNAL OF MEDICAL INVESTIGATION 2021; 67:182-188. [PMID: 32378604 DOI: 10.2152/jmi.67.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Background : Rheumatoid arthritis (RA), an autoimmune disease of unknown etiology, is believed to occur as the result of actions of genetic and environmental factors. In this study, we examined the relation of past histories about infectious diseases with the levels anti-citrullinated protein autoantibodies (ACPA) in RA. Methods : Results of a questionnaire about histories of infectious diseases were obtained from 85 patients with RA, and were analyzed. Results : Significantly lower level of ACPA was detected in patients with the history of tonsillitis, otitis media or urinary cystitis than in those without it. There was no difference in the level of ACPA in RA patients between with and without cold / influenza, rubella, chickenpox, herpes labialis or herpes zoster. When RA patients were divided into two groups, high-level and low-level ACPA, multiple logistic regression analysis revealed that the history of otitis media was a significantly independent factor for the low level of ACPA. There was no significant relation between the level of rheumatoid factor and histories of infectious diseases. Conclusion : This study clarified that the past history of otitis media is associated with the low level of ACPA in RA. J. Med. Invest. 67 : 182-188, February, 2020.
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Affiliation(s)
- Kenji Tani
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Minaho Kanamori
- Student Lab, The University of Tokushima Faculty of Medicine, Tokushima, Japan.,Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yutaro Nagase
- Student Lab, The University of Tokushima Faculty of Medicine, Tokushima, Japan.,Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yoshihiro Okura
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Shingo Kawaminami
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | | | | | - Kaori Inaba
- Yoshinogawa Medical Center, Tokushima, Japan.,Tokushima Prefectural Central Hospital, Tokushima, Japan
| | | | - Keisuke Kondo
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Ryo Tabata
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yoshihiro Suzuki
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
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7
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O'Neil LJ, Barrera-Vargas A, Sandoval-Heglund D, Merayo-Chalico J, Aguirre-Aguilar E, Aponte AM, Ruiz-Perdomo Y, Gucek M, El-Gabalawy H, Fox DA, Katz JD, Kaplan MJ, Carmona-Rivera C. Neutrophil-mediated carbamylation promotes articular damage in rheumatoid arthritis. SCIENCE ADVANCES 2020; 6:6/44/eabd2688. [PMID: 33115748 PMCID: PMC7608797 DOI: 10.1126/sciadv.abd2688] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/11/2020] [Indexed: 05/22/2023]
Abstract
Formation of autoantibodies to carbamylated proteins (anti-CarP) is considered detrimental in the prognosis of erosive rheumatoid arthritis (RA). The source of carbamylated antigens and the mechanisms by which anti-CarP antibodies promote bone erosion in RA remain unknown. Here, we find that neutrophil extracellular traps (NETs) externalize carbamylated proteins and that RA subjects develop autoantibodies against carbamylated NET (cNET) antigens that, in turn, correlate with levels of anti-CarP. Transgenic mice expressing the human RA shared epitope (HLADRB1* 04:01) immunized with cNETs develop antibodies to citrullinated and carbamylated proteins. Furthermore, anti-carbamylated histone antibodies correlate with radiographic bone erosion in RA subjects. Moreover, anti-carbamylated histone-immunoglobulin G immune complexes promote osteoclast differentiation and potentiate osteoclast-mediated matrix resorption. These results demonstrate that carbamylated proteins present in NETs enhance pathogenic immune responses and bone destruction, which may explain the association between anti-CarP and erosive arthritis in RA.
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Affiliation(s)
- Liam J O'Neil
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Ana Barrera-Vargas
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Medicas y de la Nutricion, Salvador Zubiran, Mexico City, Mexico
| | - Donavon Sandoval-Heglund
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Javier Merayo-Chalico
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Medicas y de la Nutricion, Salvador Zubiran, Mexico City, Mexico
| | - Eduardo Aguirre-Aguilar
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Medicas y de la Nutricion, Salvador Zubiran, Mexico City, Mexico
| | - Angel M Aponte
- Proteomic Core, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yanira Ruiz-Perdomo
- Office of the Clinical Director, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Marjan Gucek
- Proteomic Core, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Hani El-Gabalawy
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - David A Fox
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - James D Katz
- Office of the Clinical Director, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mariana J Kaplan
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Carmelo Carmona-Rivera
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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Sun Y, Deng W, Yao G, Chen W, Tang X, Feng X, Lu L, Sun L. Citrullinated fibrinogen impairs immunomodulatory function of bone marrow mesenchymal stem cells by triggering toll-like receptor. Clin Immunol 2018; 193:38-45. [PMID: 29373844 DOI: 10.1016/j.clim.2018.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/09/2018] [Accepted: 01/20/2018] [Indexed: 11/30/2022]
Abstract
Bone marrow mesenchymal stem cells (BMSC) have been shown to possess immunomodulatory activities, while its role in rheumatoid arthritis (RA) remains unknown. Citrullinated fibrinogen (cfb) has been considered as a specific autoantigen in RA pathogenesis. Our study aims to determine the role of cfb on immunomodulatory function of BMSC. We demonstrated the specific role of toll-like receptor 4 (TLR4)-NFκB pathway in the pro-inflammatory response of BMSC to cfb with increased production of interleukin (IL)-6, IL-8 and chemokine CC motif ligand 2 (CCL2). Moreover, cfb impaired BMSC-mediated suppression of peripheral blood mononuclear cells (PBMC) proliferation and reduced the production of the key immunomodulatory molecule indoleamine 2,3-dioxygenase (IDO) in BMSC. We have uncovered a previously unrecognized role of cfb in interfering BMSC-mediated immunoregulation in RA. Cfb could act as a damage-associated molecule pattern (DAMP) for BMSC and thereby contribute to the propagation of inflammation in RA.
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Affiliation(s)
- Yue Sun
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Wei Deng
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Genhong Yao
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Weiwei Chen
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Xiaojun Tang
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Xuebing Feng
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Liwei Lu
- Department of Pathology, Center of Infection and Immunology, University of Hong Kong, Hong Kong 999077, China
| | - Lingyun Sun
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China.
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Okada Y, Muramatsu T, Suita N, Kanai M, Kawakami E, Iotchkova V, Soranzo N, Inazawa J, Tanaka T. Significant impact of miRNA-target gene networks on genetics of human complex traits. Sci Rep 2016; 6:22223. [PMID: 26927695 PMCID: PMC4772006 DOI: 10.1038/srep22223] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 02/01/2016] [Indexed: 11/09/2022] Open
Abstract
The impact of microRNA (miRNA) on the genetics of human complex traits, especially in the context of miRNA-target gene networks, has not been fully assessed. Here, we developed a novel analytical method, MIGWAS, to comprehensively evaluate enrichment of genome-wide association study (GWAS) signals in miRNA–target gene networks. We applied the method to the GWAS results of the 18 human complex traits from >1.75 million subjects, and identified significant enrichment in rheumatoid arthritis (RA), kidney function, and adult height (P < 0.05/18 = 0.0028, most significant enrichment in RA with P = 1.7 × 10−4). Interestingly, these results were consistent with current literature-based knowledge of the traits on miRNA obtained through the NCBI PubMed database search (adjusted P = 0.024). Our method provided a list of miRNA and target gene pairs with excess genetic association signals, part of which included drug target genes. We identified a miRNA (miR-4728-5p) that downregulates PADI2, a novel RA risk gene considered as a promising therapeutic target (rs761426, adjusted P = 2.3 × 10−9). Our study indicated the significant impact of miRNA–target gene networks on the genetics of human complex traits, and provided resources which should contribute to drug discovery and nucleic acid medicine.
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Affiliation(s)
- Yukinori Okada
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.,Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Tomoki Muramatsu
- Department of Molecular Cytogenetics, Medical Research Institute and Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Naomasa Suita
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.,Advanced Medicinal Research Laboratories, Tsukuba Research Institute, Ono Pharmaceutical CO., LTD., Tsukuba 300-4247, Japan
| | - Masahiro Kanai
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Eiryo Kawakami
- Laboratory for Disease Systems Modeling, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Valentina Iotchkova
- Human Genetics, Wellcome Trust Sanger Institute, Genome Campus, Hinxton, CB10 1HH, UK.,Department of Haematology, University of Cambridge, Hills Rd, Cambridge CB2 0AH, UK
| | - Nicole Soranzo
- Human Genetics, Wellcome Trust Sanger Institute, Genome Campus, Hinxton, CB10 1HH, UK.,Department of Haematology, University of Cambridge, Hills Rd, Cambridge CB2 0AH, UK
| | - Johji Inazawa
- Department of Molecular Cytogenetics, Medical Research Institute and Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.,Bioresource Research Center, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Toshihiro Tanaka
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.,Bioresource Research Center, Tokyo Medical and Dental University, Tokyo 113-8510, Japan.,Laboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
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Sur Chowdhury C, Giaglis S, Walker UA, Buser A, Hahn S, Hasler P. Enhanced neutrophil extracellular trap generation in rheumatoid arthritis: analysis of underlying signal transduction pathways and potential diagnostic utility. Arthritis Res Ther 2014; 16:R122. [PMID: 24928093 PMCID: PMC4229860 DOI: 10.1186/ar4579] [Citation(s) in RCA: 245] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 05/21/2014] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Neutrophil extracellular traps (NETs) have recently been implicated in a number of autoimmune conditions, including rheumatoid arthritis (RA). We examined the underlying signaling pathways triggering enhanced NETosis in RA and ascertained whether the products of NETosis had diagnostic implications or usefulness. METHODS Neutrophils were isolated from RA patients with active disease and from controls. Spontaneous NET formation from RA and control neutrophils was assessed in vitro with microscopy and enzyme-linked immunosorbent assay (ELISA) for NETosis-derived products. The analysis of the signal-transduction cascade included reactive oxygen species (ROS) production, myeloperoxidase (MPO), neutrophil elastase (NE), peptidyl arginine deiminase 4 (PAD4), and citrullinated histone 3 (citH3). NET formation was studied in response to serum and synovial fluid and immunoglobulin G (IgG) depleted and reconstituted serum. Serum was analyzed for NETosis-derived products, for which receiver operator characteristic (ROC) curves were calculated. RESULTS Neutrophils from RA cases exhibited increased spontaneous NET formation in vitro, associated with elevated ROS production, enhanced NE and MPO expression, nuclear translocation of PAD4, PAD4-mediated citrullination of H3, and altered nuclear morphology. NET formation in both anti-citrullinated peptide antibody (ACPA)-positive and -negative RA was abolished by IgG depletion, but restored only with ACPA-positive IgG. NETosis-derived products in RA serum demonstrated diagnostic potential, the ROC area under the curve for cell-free nucleosomes being >97%, with a sensitivity of 91% and a specificity of 92%. No significant difference was observed between ACPA-positive and -negative cases. CONCLUSIONS Signaling elements associated with the extrusion of NETs are significantly enhanced to promote NETosis in RA compared with healthy controls. NETosis depended on the presence of ACPA in ACPA-positive RA serum. The quantitation of NETosis-derived products, such as cell-free nucleosomes in serum, may be a useful complementary tool to discriminate between healthy controls and RA cases.
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Surface α-enolase promotes extracellular matrix degradation and tumor metastasis and represents a new therapeutic target. PLoS One 2013; 8:e69354. [PMID: 23894455 PMCID: PMC3716638 DOI: 10.1371/journal.pone.0069354] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 06/07/2013] [Indexed: 12/21/2022] Open
Abstract
In previous research, we found α-enolase to be inversely correlated with progression-free and overall survival in lung cancer patients and detected α-enolase on the surface of lung cancer cells. Based on these findings, we hypothesized that surface α-enolase has a significant role in cancer metastasis and tested this hypothesis in the current study. We found that α-enolase was co-immunoprecipitated with urokinase-type plasminogen activator, urokinase-type plasminogen activator receptor, and plasminogen in lung cancer cells and interacted with these proteins in a cell-free dot blotting assay, which can be interrupted by α-enolase-specific antibody. α-Enolase in lung cancer cells co-localized with these proteins and was present at the site of pericellular degradation of extracellular matrix components. Treatment with antibody against α-enolase in vitro suppressed cell-associated plasminogen and matrix metalloproteinase activation, collagen and gelatin degradation, and cell invasion. Examination of the effect of treatment with shRNA plasmids revealed that down regulation of α-enolase decreases extracellular matrix degradation by and the invasion capacity of lung cancer cells. Adoptive transfer of α-enolase-specific antibody to mice resulted in accumulation of antibody in subcutaneous tumor and inhibited the formation of tumor metastasis in lung and bone. This study demonstrated that surface α-enolase promotes extracellular matrix degradation and invasion of cancer cells and that targeting surface α-enolase is a promising approach to suppress tumor metastasis.
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Vega B, Calle A, Sánchez A, Lechuga LM, Ortiz AM, Armelles G, Rodríguez-Frade JM, Mellado M. Real-time detection of the chemokine CXCL12 in urine samples by surface plasmon resonance. Talanta 2013; 109:209-15. [PMID: 23618162 DOI: 10.1016/j.talanta.2013.02.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 01/30/2013] [Accepted: 02/05/2013] [Indexed: 11/25/2022]
Abstract
Surface plasmon resonance (SPR)-based biosensors are established tools for measuring biomolecular interactions between unlabeled analytes in real time, and are thus an ideal method to evaluate G protein-coupled receptor (GPCR) binding interactions. Using as a vehicle lentiviral particles bearing the chemokine receptor CXCR4 in its native plasma membrane context, SPR analysis can be performed using the particles as specific receptors to monitor the CXCR4 interaction with its ligand, CXCL12. The method shows linear correlation in the 5-40 nM range, with low intra- and inter-assay variation, a relative standard deviation <10%, chip-to-chip variation <12%, with stability of the sensor response for more than 150 measurements in the same chip over a four-week period. Our objective was to develop a method for rapid detection and quantification of analytes such as CXCL12 in biological samples, with no need for pretreatment. As a proof of concept, we tested for CXCL12 in urine samples from rheumatoid arthritis patients, who have elevated levels of this chemokine in plasma and synovial fluid. The biosensor method allowed sensitive, reproducible CXCL12 detection in the physiological range, suggesting its value for the diagnosis of autoimmune disorders.
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Affiliation(s)
- Beatriz Vega
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB/CSIC), Campus de Cantoblanco, Madrid, Spain
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