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Ou Y, Wu J, Zhu Y, Qi X, Lou Y, Liu G, Jia J. Application of superb microvascular imaging technology in clinical disease activity of rheumatoid arthritis. Clin Rheumatol 2024; 43:3293-3300. [PMID: 39264374 DOI: 10.1007/s10067-024-07119-8] [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: 03/16/2024] [Revised: 07/24/2024] [Accepted: 08/04/2024] [Indexed: 09/13/2024]
Abstract
OBJECTIVES Detection of synovitis is essential for assessing the activity and predicting the prognosis of rheumatoid arthritis (RA). The aim of this study was to investigate the diagnostic performance of superb microvascular imaging (SMI) in RA patients with high, moderate, and low activity. METHODS One hundred four patients with active RA were selected from the hospital between May 2022 and August 2023. The study observed the correlation between bone erosion of the carpal joint, joint cavity effusion, thickness of synovial hyperplasia of the carpal joint, positivity rate of synovial blood vessels, and their semiquantitative scores with the clinical disease activity of RA using SMI examination. RESULTS The detection of synovial hyperplasia thickness and joint effusion in the high-activity group was higher than that in the low-activity group, and the difference was statistically significant (P < 0.05). The quantitative SMI test demonstrated that the synovial blood flow grading and semiquantitative grade increased gradually with activity level (P<0.05). During the high, moderate, and low-activity groups, the vascular index (VI) value of the hyperplastic synovial membrane decreased gradually, showing statistical significance both between and within the groups (P<0.05). CONCLUSION SMI technology exhibited high sensitivity and accuracy in assessing disease activity in RA. It holds significant clinical application value as a reliable auxiliary tool for assessing disease activity in RA and treatment. Key Points • Super micro-vascular imaging (SMI) demonstrated higher detection rates of microvessels in RA patients with high disease activity compared to those with low activity, showing statistical significance. • The quantitative SMI test revealed a clear correlation between synovial blood flow grading and disease activity levels in RA patients, highlighting the potential of SMI as a valuable tool for disease activity and treatment of rheumatoid arthritis.
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Affiliation(s)
- Yiwen Ou
- The First Clinical Medical School of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jiayu Wu
- The First Clinical Medical School of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yufei Zhu
- The First Clinical Medical School of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiangjun Qi
- The First Clinical Medical School of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yabing Lou
- Beijing Rehabilitation Hospital, Capital Medical University Gongliao Road, Shijingshan District, Beijing, 100144, China
| | - Guanghui Liu
- Department of Ultrasound, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
| | - Jie Jia
- Department of Ultrasound, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 16, Airport Road, Baiyun District, Guangzhou, 510405, Guangdong, China.
- Guangdong Clinical Research Academy of Chinese Medicine, Guangzhou, 510405, Guangdong, China.
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2
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Wang H, Kim SJ, Lei Y, Wang S, Wang H, Huang H, Zhang H, Tsung A. Neutrophil extracellular traps in homeostasis and disease. Signal Transduct Target Ther 2024; 9:235. [PMID: 39300084 DOI: 10.1038/s41392-024-01933-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 06/25/2024] [Accepted: 07/16/2024] [Indexed: 09/22/2024] Open
Abstract
Neutrophil extracellular traps (NETs), crucial in immune defense mechanisms, are renowned for their propensity to expel decondensed chromatin embedded with inflammatory proteins. Our comprehension of NETs in pathogen clearance, immune regulation and disease pathogenesis, has grown significantly in recent years. NETs are not only pivotal in the context of infections but also exhibit significant involvement in sterile inflammation. Evidence suggests that excessive accumulation of NETs can result in vessel occlusion, tissue damage, and prolonged inflammatory responses, thereby contributing to the progression and exacerbation of various pathological states. Nevertheless, NETs exhibit dual functionalities in certain pathological contexts. While NETs may act as autoantigens, aggregated NET complexes can function as inflammatory mediators by degrading proinflammatory cytokines and chemokines. The delineation of molecules and signaling pathways governing NET formation aids in refining our appreciation of NETs' role in immune homeostasis, inflammation, autoimmune diseases, metabolic dysregulation, and cancer. In this comprehensive review, we delve into the multifaceted roles of NETs in both homeostasis and disease, whilst discussing their potential as therapeutic targets. Our aim is to enhance the understanding of the intricate functions of NETs across the spectrum from physiology to pathology.
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Affiliation(s)
- Han Wang
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Susan J Kim
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Yu Lei
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuhui Wang
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Wang
- Department of Medical Genetics, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hai Huang
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Hongji Zhang
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA.
| | - Allan Tsung
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA.
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3
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Long D, Mao C, Xu Y, Zhu Y. The emerging role of neutrophil extracellular traps in ulcerative colitis. Front Immunol 2024; 15:1425251. [PMID: 39170617 PMCID: PMC11335521 DOI: 10.3389/fimmu.2024.1425251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/22/2024] [Indexed: 08/23/2024] Open
Abstract
Ulcerative colitis (UC) is characterized by chronic non-recessive inflammation of the intestinal mucosa involving both innate and adaptive immune responses. Currently, new targeted therapies are urgently needed for UC, and neutrophil extracellular traps (NETs) are new therapeutic options. NETs are DNA-based networks released from neutrophils into the extracellular space after stimulation, in which a variety of granule proteins, proteolytic enzymes, antibacterial peptides, histones, and other network structures are embedded. With the deepening of the studies on NETs, their regulatory role in the development of autoimmune and autoinflammatory diseases has received extensive attention in recent years. Increasing evidence indicates that excess NETs exacerbate the inflammatory response in UC, disrupting the structure and function of the intestinal mucosal barrier and increasing the risk of thrombosis. Although NETs are usually assigned a deleterious role in promoting the pathological process of UC, they also appear to have a protective role in some models. Despite such progress, comprehensive reviews describing the therapeutic promise of NETs in UC remain limited. In this review, we discuss the latest evidence for the formation and degradation of NETs, focusing on their double-edged role in UC. Finally, the potential implications of NETs as therapeutic targets for UC will be discussed. This review aims to provide novel insights into the pathogenesis and therapeutic options for UC.
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Affiliation(s)
- Dan Long
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Chenhan Mao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yin Xu
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Ying Zhu
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
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4
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Raposo B, Klareskog L, Robinson WH, Malmström V, Grönwall C. The peculiar features, diversity and impact of citrulline-reactive autoantibodies. Nat Rev Rheumatol 2024; 20:399-416. [PMID: 38858604 DOI: 10.1038/s41584-024-01124-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2024] [Indexed: 06/12/2024]
Abstract
Since entering the stage 25 years ago as a highly specific serological biomarker for rheumatoid arthritis, anti-citrullinated protein antibodies (ACPAs) have been a topic of extensive research. This hallmark B cell response arises years before disease onset, displays interpatient autoantigen variability, and is associated with poor clinical outcomes. Technological and scientific advances have revealed broad clonal diversity and intriguing features including high levels of somatic hypermutation, variable-domain N-linked glycosylation, hapten-like peptide interactions, and clone-specific multireactivity to citrullinated, carbamylated and acetylated epitopes. ACPAs have been found in different isotypes and subclasses, in both circulation and tissue, and are secreted by both plasmablasts and long-lived plasma cells. Notably, although some disease-promoting features have been reported, results now demonstrate that certain monoclonal ACPAs therapeutically block arthritis and inflammation in mouse models. A wealth of functional studies using patient-derived polyclonal and monoclonal antibodies have provided evidence for pathogenic and protective effects of ACPAs in the context of arthritis. To understand the roles of ACPAs, one needs to consider their immunological properties by incorporating different facets such as rheumatoid arthritis B cell biology, environmental triggers and chronic antigen exposure. The emerging picture points to a complex role of citrulline-reactive autoantibodies, in which the diversity and dynamics of antibody clones could determine clinical progression and manifestations.
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Affiliation(s)
- Bruno Raposo
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Klareskog
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - William H Robinson
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Vivianne Malmström
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
| | - Caroline Grönwall
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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5
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Dunlap G, Wagner A, Meednu N, Wang R, Zhang F, Ekabe JC, Jonsson AH, Wei K, Sakaue S, Nathan A, Bykerk VP, Donlin LT, Goodman SM, Firestein GS, Boyle DL, Holers VM, Moreland LW, Tabechian D, Pitzalis C, Filer A, Raychaudhuri S, Brenner MB, Thakar J, McDavid A, Rao DA, Anolik JH. Clonal associations between lymphocyte subsets and functional states in rheumatoid arthritis synovium. Nat Commun 2024; 15:4991. [PMID: 38862501 PMCID: PMC11167034 DOI: 10.1038/s41467-024-49186-0] [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: 06/04/2023] [Accepted: 05/20/2024] [Indexed: 06/13/2024] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease involving antigen-specific T and B cells. Here, we perform single-cell RNA and repertoire sequencing on paired synovial tissue and blood samples from 12 seropositive RA patients. We identify clonally expanded CD4 + T cells, including CCL5+ cells and T peripheral helper (Tph) cells, which show a prominent transcriptomic signature of recent activation and effector function. CD8 + T cells show higher oligoclonality than CD4 + T cells, with the largest synovial clones enriched in GZMK+ cells. CD8 + T cells with possibly virus-reactive TCRs are distributed across transcriptomic clusters. In the B cell compartment, NR4A1+ activated B cells, and plasma cells are enriched in the synovium and demonstrate substantial clonal expansion. We identify synovial plasma cells that share BCRs with synovial ABC, memory, and activated B cells. Receptor-ligand analysis predicted IFNG and TNFRSF members as mediators of synovial Tph-B cell interactions. Together, these results reveal clonal relationships between functionally distinct lymphocyte populations that infiltrate the synovium of patients with RA.
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Grants
- UH2 AR067685 NIAMS NIH HHS
- R01 AI175212 NIAID NIH HHS
- UM2 AR067678 NIAMS NIH HHS
- UH2 AR067681 NIAMS NIH HHS
- UH2 AR067688 NIAMS NIH HHS
- UH2 AR067689 NIAMS NIH HHS
- UC2 AR081025 NIAMS NIH HHS
- UH2 AR067690 NIAMS NIH HHS
- UH2 AR067677 NIAMS NIH HHS
- UH2 AR067694 NIAMS NIH HHS
- UH2 AR067679 NIAMS NIH HHS
- R21 AR071670 NIAMS NIH HHS
- K08 AR081412 NIAMS NIH HHS
- UH2 AR067676 NIAMS NIH HHS
- UH2 AR067691 NIAMS NIH HHS
- Funding for AMP RA/SLE work was provided through grants from the National Institutes of Health (UH2-AR067676, UH2-AR067677, UH2-AR067679, UH2-AR067681, UH2-AR067685, UH2-AR067688, UH2-AR067689, UH2-AR067690, UH2-AR067691, UH2-AR067694, and UM2-AR067678).
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Affiliation(s)
- Garrett Dunlap
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Aaron Wagner
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Nida Meednu
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, USA
| | - Ruoqiao Wang
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Fan Zhang
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Rheumatology and the Center for Health Artificial Intelligence, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jabea Cyril Ekabe
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, USA
| | - Anna Helena Jonsson
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Kevin Wei
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Saori Sakaue
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Aparna Nathan
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Vivian P Bykerk
- Hospital for Special Surgery, New York, NY, USA
- Weill Cornell Medicine, New York, NY, USA
| | - Laura T Donlin
- Hospital for Special Surgery, New York, NY, USA
- Weill Cornell Medicine, New York, NY, USA
| | - Susan M Goodman
- Hospital for Special Surgery, New York, NY, USA
- Weill Cornell Medicine, New York, NY, USA
| | - Gary S Firestein
- Division of Rheumatology, Allergy and Immunology, University of California, San Diego;, La Jolla, CA, USA
| | - David L Boyle
- Division of Rheumatology, Allergy and Immunology, University of California, San Diego;, La Jolla, CA, USA
| | - V Michael Holers
- Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Larry W Moreland
- Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, USA
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Darren Tabechian
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, USA
| | - Costantino Pitzalis
- Centre for Experimental Medicine & Rheumatology, EULAR Centre of Excellence, William Harvey Research Institute, Queen Mary University of London, London, UK
- Barts Health NHS Trust, Barts Biomedical Research Centre (BRC), National Institute for Health and Care Research (NIHR), London, UK
- Department of Biomedical Sciences, Humanitas University and Humanitas Research Hospital, Milan, Italy
| | - Andrew Filer
- Rheumatology Research Group, Institute for Inflammation and Ageing, University of Birmingham, NIHR Birmingham Biomedical Research Center and Clinical Research Facility, University of Birmingham, Queen Elizabeth Hospital, Birmingham, UK
- Birmingham Tissue Analytics, Institute of Translational Medicine, University of Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Center and Clinical Research Facility, University of Birmingham, Queen Elizabeth Hospital, Birmingham, UK
| | - Soumya Raychaudhuri
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Michael B Brenner
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Juilee Thakar
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Andrew McDavid
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Deepak A Rao
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
| | - Jennifer H Anolik
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, USA.
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
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6
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Sue T, Ichikawa T, Hattori S, Otani H, Fujimura S, Higuchi T, Okumura N, Higuchi Y. Quantitative evaluation of citrullinated fibrinogen for detection of neutrophil extracellular traps. Immunol Res 2024; 72:409-417. [PMID: 38087184 DOI: 10.1007/s12026-023-09446-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/28/2023] [Indexed: 07/03/2024]
Abstract
Activated neutrophils release neutrophil extracellular traps (NETs) composed of chromatin filaments containing bactericidal proteins and enzymes. This process, known as NETosis, is an innate host defense mechanism. However, NET accumulation can lead to uncontrolled inflammation and organ damage. Therefore, NET detection provides clinically important information for the assessment of inflammatory conditions. We investigated whether quantification of citrullinated fibrinogen (C-Fbg), which is catalyzed by peptidylarginine deiminase (PAD) released during NETosis, can be used to detect NETs. Human neutrophils were stimulated with fibrinogen using phorbol 12-myristate 13-acetate (PMA). The myeloperoxidase (MPO)-DNA complex and C-Fbg concentrations in the culture supernatants were quantified using an enzyme-linked immunosorbent assay. The protein levels of peptidylarginine deiminase 2 and 4 in culture supernatants and mRNA levels in PMA-stimulated neutrophils were also assessed. The levels of the MPO-DNA complex in the supernatants of PMA-stimulated neutrophils increased, indicating NETosis. C-Fbg level also increased, which was suppressed by both NETosis and PAD inhibitors. PAD2 was detected in the culture supernatant; however, PAD4, but not PAD2, mRNA levels increased in PMA-stimulated neutrophils. This study quantitatively demonstrates that fibrinogen is citrullinated by PAD derived from PMA-stimulated neutrophils upon NETosis. Although further studies are needed for clinical application, quantification of C-Fbg in blood may help detect the presence of NETs.
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Affiliation(s)
- Tsubasa Sue
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Tomoki Ichikawa
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Shu Hattori
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Hikaru Otani
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Satoshi Fujimura
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Tsukasa Higuchi
- Department of General Pediatrics, Nagano Children's Hospital, Azumino, Japan
- Life Science Research Center, Nagano Children's Hospital, Azumino, Japan
| | - Nobuo Okumura
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yumiko Higuchi
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan.
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7
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Aslanian-Kalkhoran L, Mehdizadeh A, Aghebati-Maleki L, Danaii S, Shahmohammadi-Farid S, Yousefi M. The role of neutrophils and neutrophil extracellular traps (NETs) in stages, outcomes and pregnancy complications. J Reprod Immunol 2024; 163:104237. [PMID: 38503075 DOI: 10.1016/j.jri.2024.104237] [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: 08/28/2023] [Revised: 01/23/2024] [Accepted: 03/07/2024] [Indexed: 03/21/2024]
Abstract
Neutrophils are the main components of innate immunity to eliminate infectious pathogens. Neutrophils play a role in several stages of the reproductive cycle, and their presence in the female reproductive system is highly regulated, so their function may change during pregnancy. Emerging evidence suggests that neutrophils are important at all stages of pregnancy, from implantation, placentation, and connective tissue regeneration to birth, as well as birth itself. Neutrophil extracellular traps (NETs) are defined as extracellular strands of unfolded DNA together with histone complexes and neutrophil granule proteins. NET formation is a new mechanism of these cells for their defense function. These strands containing DNA and antimicrobial peptides were initially recognized as one of the defense mechanisms of neutrophils, but later it was explained that they are involved in a variety of non-infectious diseases. Since the source of inflammation and tissue damage is the irregular activity of neutrophils, it is not surprising that NETosis are associated with a number of inflammatory conditions and diseases. The overexpression of NET components or non-principled NET clearance is associated with the risk of production and activation of autoantibodies, which results in participation in autoinflammatory and autoimmune disorders (SLE, RA), fibrosis, sepsis and other disorders such as vascular diseases, for example, thrombosis and atherosclerosis. Recent published articles have shown the role of neutrophils and extracellular traps (NETs) in pregnancy, childbirth and pregnancy-related diseases. The aim of this study was to identify and investigate the role of neutrophils and neutrophil extracellular traps (NETs) in the stages of pregnancy, as well as the complications caused by these cells.
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Affiliation(s)
- Lida Aslanian-Kalkhoran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mehdizadeh
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Shahla Danaii
- Gynecology Department, Eastern Azerbaijan ACECR ART Centre, Eastern Azerbaijan Branch of ACECR, Tabriz, Iran
| | | | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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8
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Roghani SA, Dastbaz M, Lotfi R, Shamsi A, Abdan Z, Rostampour R, Soleymani B, Zamanian MH, Soufivand P, Pournazari M, Taghadosi M. The development of anticyclic citrullinated peptide (anti-CCP) antibody following severe COVID-19. Immun Inflamm Dis 2024; 12:e1276. [PMID: 38780036 PMCID: PMC11112627 DOI: 10.1002/iid3.1276] [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: 01/16/2024] [Revised: 04/10/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
OBJECTIVES The dysregulated immune response is one of the cardinal features of severe coronavirus disease 2019 (COVID-19). This study was conducted to clarify the occurrence of autoantibodies (AABs) associated with systemic autoimmune rheumatic diseases (SARDs) in hospitalized patients with a moderate, severe, and critical form of COVID-19. METHODS The serum samples obtained from 176 hospitalized COVID-19 patients were investigated in this study, including patients with moderate (N = 90), severe (N = 50), and critical (N = 36) forms of COVID-19. Also, the serum samples collected from healthy subjects before the COVID-19 pandemic were used as controls (N = 176). The antinuclear antibodies (ANAs), antidouble-stranded DNA (anti-dsDNA), cytoplasmic-anti neutrophil cytoplasmic antibody (c-ANCA), perinuclear ANCA (p-ANCA), antiphospholipid antibodies (aPLs), and anticyclic citrullinated peptide (anti-CCP) occurrence was evaluated using a solid-phase enzyme-linked immunosorbent assay (ELISA). RESULTS The results showed that the occurrence of ANAs, anti-dsDNA, anti-CCP, c-ANCA, and p-ANCA was significantly higher in the COVID-19 patients compared to serum obtained from healthy subjects (p < .0001, p < .0001, p < .0001, p < .05, and p < .001, respectively). The positive number of anti-CCP tests increased significantly in severe COVID-19 compared to the moderate group (p < .01). CONCLUSION Our study further supports the development of autoantibodies related to systemic autoimmune rheumatologic diseases. To the best of our knowledge, this is the first study with a large sample size that reported the occurrence of anti-CCP in a severe form of COVID-19.
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Affiliation(s)
- Seyed Askar Roghani
- Immunology Department, Faculty of MedicineKermanshah University of Medical SciencesKermanshahIran
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
- Medical Biology Research Center, Health Technology InstituteKermanshah University of Medical SciencesKermanshahIran
| | - Mohammad Dastbaz
- Immunology Department, Faculty of MedicineKermanshah University of Medical SciencesKermanshahIran
| | - Ramin Lotfi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion MedicineKurdistan Regional Blood Transfusion CenterSanandajIran
- Clinical Research Development Center, Tohid HospitalKurdistan University of Medical SciencesSanandajIran
| | - Afsaneh Shamsi
- Immunology Department, Faculty of MedicineKermanshah University of Medical SciencesKermanshahIran
| | - Zahra Abdan
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
| | - Rezvan Rostampour
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
- Department of Clinical Biochemistry, Medical SchoolKermanshah University of Medical SciencesKermanshahIran
| | - Bijan Soleymani
- Medical Biology Research Center, Health Technology InstituteKermanshah University of Medical SciencesKermanshahIran
| | - Mohammad Hossein Zamanian
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
| | - Parviz Soufivand
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
| | - Mehran Pournazari
- Clinical Research Development Center, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
| | - Mahdi Taghadosi
- Immunology Department, Faculty of MedicineKermanshah University of Medical SciencesKermanshahIran
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9
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Corsiero E, Caliste M, Jagemann L, Fossati-Jimack L, Goldmann K, Cubuk C, Ghirardi GM, Prediletto E, Rivellese F, Alessandri C, Hopkinson M, Javaheri B, Pitsillides AA, Lewis MJ, Pitzalis C, Bombardieri M. Autoimmunity to stromal-derived autoantigens in rheumatoid ectopic germinal centers exacerbates arthritis and affects clinical response. J Clin Invest 2024; 134:e169754. [PMID: 38950333 PMCID: PMC11178537 DOI: 10.1172/jci169754] [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: 02/14/2023] [Accepted: 04/23/2024] [Indexed: 07/03/2024] Open
Abstract
Ectopic lymphoid structures (ELSs) in the rheumatoid synovial joints sustain autoreactivity against locally expressed autoantigens. We recently identified recombinant monoclonal antibodies (RA-rmAbs) derived from single, locally differentiated rheumatoid arthritis (RA) synovial B cells, which specifically recognize fibroblast-like synoviocytes (FLSs). Here, we aimed to identify the specificity of FLS-derived autoantigens fueling local autoimmunity and the functional role of anti-FLS antibodies in promoting chronic inflammation. A subset of anti-FLS RA-rmAbs reacting with a 60 kDa band from FLS extracts demonstrated specificity for HSP60 and partial cross-reactivity to other stromal autoantigens (i.e., calreticulin/vimentin) but not to citrullinated fibrinogen. Anti-FLS RA-rmAbs, but not anti-neutrophil extracellular traps rmAbs, exhibited pathogenic properties in a mouse model of collagen-induced arthritis. In patients, anti-HSP60 antibodies were preferentially detected in RA versus osteoarthritis (OA) synovial fluid. Synovial HSPD1 and CALR gene expression analyzed using bulk RNA-Seq and GeoMx-DSP closely correlated with the lympho-myeloid RA pathotype, and HSP60 protein expression was predominantly observed around ELS. Moreover, we observed a significant reduction in synovial HSP60 gene expression followed B cell depletion with rituximab that was strongly associated with the treatment response. Overall, we report that synovial stromal-derived autoantigens are targeted by pathogenic autoantibodies and are associated with specific RA pathotypes, with potential value for patient stratification and as predictors of the response to B cell-depleting therapies.
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Affiliation(s)
- Elisa Corsiero
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Mattia Caliste
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Lucas Jagemann
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Liliane Fossati-Jimack
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Katriona Goldmann
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Cankut Cubuk
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Giulia M. Ghirardi
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Edoardo Prediletto
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Felice Rivellese
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Cristiano Alessandri
- Arthritis Center, Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - Mark Hopkinson
- Comparative Biomedical Sciences Centre, Royal Veterinary College, London, United Kingdom
| | - Behzad Javaheri
- Comparative Biomedical Sciences Centre, Royal Veterinary College, London, United Kingdom
| | - Andrew A. Pitsillides
- Comparative Biomedical Sciences Centre, Royal Veterinary College, London, United Kingdom
| | - Myles J. Lewis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
| | - Costantino Pitzalis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
- IRCCS Istituto Clinico Humanitas Via Manzoni, Rozzano (Milano), Italy
| | - Michele Bombardieri
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
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10
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Budair F, Kambe N, Kogame T, Hirata M, Takimoto-Ito R, Mostafa A, Nomura T, Kabashima K. Presence of immunoglobulin E-expressing antibody-secreting cells in the dermis close to bullous pemphigoid lesions. Exp Dermatol 2024; 33:e15058. [PMID: 38590080 DOI: 10.1111/exd.15058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 04/10/2024]
Abstract
Antibody-secreting cells (ASCs) produce immunoglobulin (Ig) G and IgE autoantibodies in secondary lymphoid organs. Evidence also suggests their existence in the skin in various chronic inflammatory conditions, and in association with CXCL12 and CXCL13, they regulate the recruitment/survival of ASCs and germinal center formation to generate ASCs, respectively. However, the presence of IgG and IgE in bullous pemphigoid (BP) lesions needs to be addressed. Here, we aimed to analyse BP skin for the presence of IgG and IgE and the factors contributing to their generation, recruitment, and persistence. Skin samples from 30 patients with BP were stained to identify ASCs and the immunoglobulin type they expressed. The presence of tertiary lymphoid organ (TLO) elements, which generate ASCs in non-lymphoid tissues, and the chemokines CXCL12 and CXCL13, which regulate the migration/persistence of ASCs in lymphoid tissues and formation of TLOs, respectively, were evaluated in BP skin. BP skin harboured ASCs expressing the two types of antibodies IgG and IgE. ASCs were found in high-grade cellular aggregates containing TLO elements: T cells, B cells, CXCL12+ cells, CXCL13+ cells and high endothelial venules. IgG+ ASCs were detected among these aggregates, whereas IgE+ ASCs were dispersed throughout the dermis. CXCL12+ fibroblast-like cells were located close to ASCs. The inflammatory microenvironment of BP lesions may contribute to the antibody load characteristic of the skin of patients with BP by providing a site for the presence of ASCs. CXCL13 and CXCL12 expression may contribute to the generation and recruitment/survival of ASCs, respectively.
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Affiliation(s)
- Fatimah Budair
- Department of Dermatology, King Fahd University Hospital, Alkhobar, College of Medicine, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Naotomo Kambe
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Toshiaki Kogame
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masahiro Hirata
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Riko Takimoto-Ito
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Alshimaa Mostafa
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Drug Development for Intractable Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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11
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Li X, Hu L, Naeem A, Xiao S, Yang M, Shang H, Zhang J. Neutrophil Extracellular Traps in Tumors and Potential Use of Traditional Herbal Medicine Formulations for Its Regulation. Int J Nanomedicine 2024; 19:2851-2877. [PMID: 38529365 PMCID: PMC10961241 DOI: 10.2147/ijn.s449181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/28/2024] [Indexed: 03/27/2024] Open
Abstract
Neutrophil extracellular traps (NETs) are extracellular fibers composed of deoxyribonucleic acid (DNA) and decorated proteins produced by neutrophils. Recently, NETs have been associated with the development of many diseases, including tumors. Herein, we reviewed the correlation between NETs and tumors. In addition, we detailed active compounds from traditional herbal medicine formulations that inhibit NETs, related nanodrug delivery systems, and antibodies that serve as "guiding moieties" to ensure targeted delivery to NETs. Furthermore, we discussed the strategies used by pathogenic microorganisms to evade NETs.
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Affiliation(s)
- Xiang Li
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Lei Hu
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Abid Naeem
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330004, People’s Republic of China
- School of Life Science, Advanced Research Institute of Multidisciplinary Science, School of Medical Technology, Key Laboratory of Molecular Medicine and Biotherapy, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Beijing Institute of Technology, Beijing, 100081, People’s Republic of China
| | - Shanghua Xiao
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330004, People’s Republic of China
| | - Ming Yang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330004, People’s Republic of China
| | - Hongming Shang
- Department of Biochemistry & Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - Jing Zhang
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330006, People’s Republic of China
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, 330004, People’s Republic of China
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12
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Yamada S, Nagafuchi Y, Fujio K. Pathophysiology and stratification of treatment-resistant rheumatoid arthritis. Immunol Med 2024; 47:12-23. [PMID: 37462450 DOI: 10.1080/25785826.2023.2235734] [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: 04/23/2023] [Accepted: 07/09/2023] [Indexed: 02/23/2024] Open
Abstract
Early diagnosis and timely therapeutic intervention are clinical challenges of rheumatoid arthritis (RA), especially for treatment-resistant or difficult-to-treat patients. Little is known about the immunological mechanisms involved in refractory RA. In this review, we summarize previous research findings on the immunological mechanisms of treatment-resistant RA. Genetic prediction of treatment-resistant RA is challenging. Patients with and without anti-cyclic citrullinated peptide autoantibodies are considered part of distinct subgroups, especially regarding long-term clinical prognosis and treatment responses. B cells, T cells and other immune cells and fibroblasts are of pathophysiological importance and are associated with treatment responses. Finally, we propose a new hypothesis that stratifies patients with RA into two subgroups with distinct immunological pathologies based on our recent immunomics analysis of RA. One RA subgroup with a favorable prognosis is characterized by increased interferon signaling. Another subgroup with a worse prognosis is characterized by enhanced acquired immune responses. Increases in dendritic cell precursors and diversified autoreactive anti-modified protein antibodies may have pathophysiological roles, especially in the latter subgroup. These findings that improve treatment response predictions might contribute to future precision medicine for RA.
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Affiliation(s)
- Saeko Yamada
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuo Nagafuchi
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keishi Fujio
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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13
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Gomez AM, Brewer RC, Moon JS, Acharya S, Kongpachith S, Wang Q, Jahanbani S, Wong HH, Lanz TV, Love ZZ, Min-Oo G, Niedziela-Majka A, Robinson WH. Anti-Citrullinated Protein Antibodies With Multiple Specificities Ameliorate Collagen Antibody-Induced Arthritis in a Time-Dependent Manner. Arthritis Rheumatol 2024; 76:181-191. [PMID: 37610274 DOI: 10.1002/art.42679] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/23/2023] [Accepted: 08/17/2023] [Indexed: 08/24/2023]
Abstract
OBJECTIVE Anti-citrullinated protein antibodies (ACPAs) are highly specific for rheumatoid arthritis (RA) and have long been regarded as pathogenic. Despite substantial in vitro evidence supporting this claim, reports investigating the proinflammatory effects of ACPAs in animal models of arthritis are rare and include mixed results. Here, we sequenced the plasmablast antibody repertoire of a patient with RA and functionally characterized the encoded ACPAs. METHODS We expressed ACPAs from the antibody repertoire of a patient with RA and characterized their autoantigen specificities on antigen arrays and enzyme-linked immunosorbent assays. Binding affinities were estimated by bio-layer interferometry. Select ACPAs (n = 9) were tested in the collagen antibody-induced arthritis (CAIA) mouse model to evaluate their effects on joint inflammation. RESULTS Recombinant ACPAs bound preferentially and with high affinity (nanomolar range) to citrullinated (cit) autoantigens (primarily histones and fibrinogen) and to auto-cit peptidylarginine deiminase 4 (PAD4). ACPAs were grouped for in vivo testing based on their predominant cit-antigen specificities. Unexpectedly, injections of recombinant ACPAs significantly reduced paw thickness and arthritis severity in CAIA mice as compared with isotype-matched control antibodies (P ≤ 0.001). Bone erosion, synovitis, and cartilage damage were also significantly reduced (P ≤ 0.01). This amelioration of CAIA was observed for all the ACPAs tested and was independent of cit-PAD4 and cit-fibrinogen specificities. Furthermore, disease amelioration was more prominent when ACPAs were injected at earlier stages of CAIA than at later phases of the model. CONCLUSION Recombinant patient-derived ACPAs ameliorated CAIA. Their antiinflammatory effects were more preventive than therapeutic. This study highlights a potential protective role for ACPAs in arthritis.
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Affiliation(s)
- Alejandro M Gomez
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - R Camille Brewer
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Jae-Seung Moon
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Suman Acharya
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Sarah Kongpachith
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Qian Wang
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Shaghayegh Jahanbani
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Heidi H Wong
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Tobias V Lanz
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | - Zelda Z Love
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
| | | | | | - William H Robinson
- Stanford University School of Medicine, Stanford, and VA Palo Alto Health Care System, Palo Alto, California
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14
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Li Y, Wu Y, Huang J, Cao X, An Q, Peng Y, Zhao Y, Luo Y. A variety of death modes of neutrophils and their role in the etiology of autoimmune diseases. Immunol Rev 2024; 321:280-299. [PMID: 37850797 DOI: 10.1111/imr.13284] [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] [Indexed: 10/19/2023]
Abstract
Neutrophils are important in the context of innate immunity and actively contribute to the progression of diverse autoimmune disorders. Distinct death mechanisms of neutrophils may exhibit specific and pivotal roles in autoimmune diseases and disease pathogenesis through the orchestration of immune homeostasis, the facilitation of autoantibody production, the induction of tissue and organ damage, and the incitement of pathological alterations. In recent years, more studies have provided in-depth examination of various neutrophil death modes, revealing nuances that challenge conventional understanding and underscoring their potential clinical utility in diagnosis and treatment. This review explores the multifaceted processes and characteristics of neutrophil death, with a focus on tailored investigations within various autoimmune diseases. It also highlights the potential interplay between neutrophil death and the landscape of autoimmune disorders. The review encapsulates the pertinent pathways implicated in various neutrophil death mechanisms across diverse autoimmune diseases while also charts possible avenues for future research.
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Affiliation(s)
- Yanhong Li
- Department of Rheumatology & Immunology, Laboratory of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yinlan Wu
- Department of Rheumatology & Immunology, Laboratory of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jingang Huang
- Medical Research Center, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xue Cao
- Department of Rheumatology and Immunology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, Henan, China
| | - Qiyuan An
- School of Inspection and Biotechnology, Southern Medical University, Guangzhou, China
| | - Yun Peng
- Department of Rheumatology and Clinical Immunology, School of Medicine, The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, Fujian, China
| | - Yi Zhao
- Department of Rheumatology & Immunology, Laboratory of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yubin Luo
- Department of Rheumatology & Immunology, Laboratory of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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15
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Raposo B, Grönwall C. The diversity of anti-citrulline reactivity and ACPA-associated phenotypes. Joint Bone Spine 2023; 90:105617. [PMID: 37482175 DOI: 10.1016/j.jbspin.2023.105617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/25/2023]
Affiliation(s)
- Bruno Raposo
- Department of Medicine, Division of Rheumatology, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden.
| | - Caroline Grönwall
- Department of Medicine, Division of Rheumatology, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
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16
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Melbouci D, Haidar Ahmad A, Decker P. Neutrophil extracellular traps (NET): not only antimicrobial but also modulators of innate and adaptive immunities in inflammatory autoimmune diseases. RMD Open 2023; 9:e003104. [PMID: 37562857 PMCID: PMC10423839 DOI: 10.1136/rmdopen-2023-003104] [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: 02/24/2023] [Accepted: 05/14/2023] [Indexed: 08/12/2023] Open
Abstract
Polymorphonuclear neutrophils (PMN) represent one of the first lines of defence against invading pathogens and are the most abundant leucocytes in the circulation. Generally described as pro-inflammatory cells, recent data suggest that PMN also have immunomodulatory capacities. In response to certain stimuli, activated PMN expel neutrophil extracellular traps (NET), structures made of DNA and associated proteins. Although originally described as an innate immune mechanism fighting bacterial infection, NET formation (or probably rather an excess of NET together with impaired clearance of NET) may be deleterious. Indeed, NET have been implicated in the development of several inflammatory and autoimmune diseases as rheumatoid arthritis or systemic lupus erythematosus, as well as fibrosis or cancer. They have been suggested as a source of (neo)autoantigens or regulatory proteins like proteases or to act as a physical barrier. Different mechanisms of NET formation have been described, leading to PMN death or not, depending on the stimulus. Interestingly, NET may be both pro-inflammatory and anti-inflammatory and this probably partly depends on the mechanism, and thus the stimuli, triggering NET formation. Within this review, we will describe the pro-inflammatory and anti-inflammatory activities of NET and especially how NET may modulate immune responses.
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Affiliation(s)
- Dyhia Melbouci
- Inserm UMR 1125, Li2P, Université Sorbonne Paris Nord-Campus de Bobigny, Bobigny, Île-de-France, France
| | - Ahmad Haidar Ahmad
- Inserm UMR 1125, Li2P, Université Sorbonne Paris Nord-Campus de Bobigny, Bobigny, Île-de-France, France
| | - Patrice Decker
- Inserm UMR 1125, Li2P, Université Sorbonne Paris Nord-Campus de Bobigny, Bobigny, Île-de-France, France
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17
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Ma W, Zhu J, Bai L, Zhao P, Li F, Zhang S. The role of neutrophil extracellular traps and proinflammatory damage-associated molecular patterns in idiopathic inflammatory myopathies. Clin Exp Immunol 2023; 213:202-208. [PMID: 37289984 PMCID: PMC10361739 DOI: 10.1093/cei/uxad059] [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: 02/11/2023] [Revised: 04/13/2023] [Accepted: 05/25/2023] [Indexed: 06/10/2023] Open
Abstract
Idiopathic inflammatory myopathies (IIMs) are a group of systemic autoimmune diseases characterized by immune-mediated muscle injury. Abnormal neutrophil extracellular traps (NETs) can be used as a biomarker of IIM disease activity, but the mechanism of NET involvement in IIMs needs to be elucidated. Important components of NETs, including high-mobility group box 1, DNA, histones, extracellular matrix, serum amyloid A, and S100A8/A9, act as damage-associated molecular patterns (DAMPs) to promote inflammation in IIMs. NETs can act on different cells to release large amounts of cytokines and activate the inflammasome, which can subsequently aggravate the inflammatory response. Based on the idea that NETs may be proinflammatory DAMPs of IIMs, we describe the role of NETs, DAMPs, and their interaction in the pathogenesis of IIMs and discuss the possible targeted treatment strategies in IIMs.
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Affiliation(s)
- Wenlan Ma
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Jiarui Zhu
- Department of Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, China
| | - Ling Bai
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Peipei Zhao
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Feifei Li
- The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Sigong Zhang
- Department of Rheumatology, Lanzhou University Second Hospital, Lanzhou, China
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18
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Mantel I, Fein MR, Donlin LT. Emerging synovial cell states in rheumatoid arthritis as potential therapeutic targets. Curr Opin Rheumatol 2023; 35:249-254. [PMID: 37040654 PMCID: PMC10219846 DOI: 10.1097/bor.0000000000000940] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
PURPOSE OF REVIEW To summarize recently discovered novel cell states in rheumatoid arthritis (RA) synovium that could have important implications for disease treatment. RECENT FINDINGS The use of multiomic technologies, including single-cell and spatial transcriptomics and mass cytometry, has led to the discovery of several novel cell states, which could have important implications for the treatment of RA. These cells can be found in patient blood, synovial fluid, or synovial tissue and span several immune cell subsets as well as stromal cell types. These diverse cell states may represent the targets of current or future therapeutics, while their fluctuations may inform the ideal timing for therapy. Future efforts are needed to implicate how each cell state functions in the pathophysiologic network within affected joints and how medications perturb each cell state and ultimately the tissue. SUMMARY Multiomic molecular technologies have afforded the discovery of numerous novel cellular states in RA synovium; the next challenge will be to link these states to pathophysiology and treatment response.
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Affiliation(s)
- Ian Mantel
- Weill Cornell Medicine Graduate School
- Hospital for Special Surgery Research Institute, New York, New York, USA
| | - Miriam R Fein
- Hospital for Special Surgery Research Institute, New York, New York, USA
| | - Laura T Donlin
- Weill Cornell Medicine Graduate School
- Hospital for Special Surgery Research Institute, New York, New York, USA
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19
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Trier NH, Houen G. Anti-citrullinated protein antibodies as biomarkers in rheumatoid arthritis. Expert Rev Mol Diagn 2023; 23:895-911. [PMID: 37578277 DOI: 10.1080/14737159.2023.2247986] [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: 03/29/2023] [Revised: 07/15/2023] [Accepted: 08/10/2023] [Indexed: 08/15/2023]
Abstract
INTRODUCTION The serological biomarker anti-citrullinated protein antibodies (ACPAs) may have several functions but is especially important for the diagnosis of rheumatoid arthritis (RA) along with clinical symptoms. AREAS COVERED This review provides an overview of ACPAs, which are useful in RA diagnostics and may improve our understanding of disease etiology. PubMed was searched with combinations of words related to antibodies recognizing epitopes containing the post-translationally modified amino acid citrulline in combination with rheumatoid arthritis; cyclic citrullinated peptide, CCP, anti-CCP, anti-citrullinated protein antibodies, ACPA, citrullination, peptide/protein arginine deiminase, PAD, filaggrin, vimentin, keratin, collagen, perinuclear factor, EBNA1, EBNA2, and others. From this search, we made a qualitative extract of publications relevant to the discovery, characterization, and clinical use of these antibodies in relation to RA. We highlight significant findings and identify areas for improvement. EXPERT OPINION ACPAs have high diagnostic sensitivity and specificity for RA and recognize citrullinated epitopes from several proteins. The best-performing single epitope originates from Epstein-Barr Virus nuclear antigen 2 and contains a central Cit-Gly motif, which is recognized by ACPAS when located in a flexible peptide structure. In addition, ACPAs may also have prognostic value, especially in relation to early treatment, although ACPAs' main function is to aid in the diagnosis of RA.
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Affiliation(s)
| | - Gunnar Houen
- Department of Neurology, Rigshospitalet Glostrup, Glostrup, Denmark
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
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20
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Huang Y, Ba X, Han L, Wang H, Lin W, Chen Z, Tu S. T peripheral helper cells in autoimmune diseases: What do we know? Front Immunol 2023; 14:1145573. [PMID: 37077922 PMCID: PMC10106688 DOI: 10.3389/fimmu.2023.1145573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/17/2023] [Indexed: 04/05/2023] Open
Abstract
The interactions between T cells and B cells are essential for antibody responses and the development of autoimmune diseases. Recently, a distinct subset of T cells capable of helping B cells was established in synovial fluid, and they were termed peripheral helper T (Tph) cells. PD-1hiCXCR5−CD4+ Tph cells express high levels of CXCL13, which drives the formation of lymphoid aggregates and tertiary lymphoid structures, ultimately facilitating the local production of pathogenic autoantibodies. Tph and T follicular helper cells share some key features but can be distinguished by their surface markers, transcriptional regulation, and migration capability. We summarize recent findings on Tph cells in this review and provide a perspective on their potential roles in a range of autoimmune diseases. More clinical and in-depth mechanistic investigations of Tph cells may help to improve the understanding of pathogenesis and further provide novel therapeutic targets in autoimmune diseases.
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Affiliation(s)
- Yao Huang
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medcal College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Ba
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liang Han
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Wang
- Rehabilitation & Sports Medicine Research Institute of Zhejiang, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Weiji Lin
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe Chen
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medcal College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Zhe Chen, ; Shenghao Tu,
| | - Shenghao Tu
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medcal College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Zhe Chen, ; Shenghao Tu,
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21
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Cîrciumaru A, Afonso MG, Wähämaa H, Krishnamurthy A, Hansson M, Mathsson-Alm L, Keszei M, Stålesen R, Ottosson L, de Vries C, Shelef MA, Malmström V, Klareskog L, Catrina AI, Grönwall C, Hensvold A, Réthi B. Anti-Citrullinated Protein Antibody Reactivity towards Neutrophil-Derived Antigens: Clonal Diversity and Inter-Individual Variation. Biomolecules 2023; 13:biom13040630. [PMID: 37189377 DOI: 10.3390/biom13040630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Background: Why the adaptive immune system turns against citrullinated antigens in rheumatoid arthritis (RA) and whether anti-citrullinated protein antibodies (ACPAs) contribute to pathogenesis are questions that have triggered intense research, but still are not fully answered. Neutrophils may be crucial in this context, both as sources of citrullinated antigens and also as targets of ACPAs. To better understand how ACPAs and neutrophils contribute to RA, we studied the reactivity of a broad spectrum of RA patient-derived ACPA clones to activated or resting neutrophils, and we also compared neutrophil binding using polyclonal ACPAs from different patients. Methods: Neutrophils were activated by Ca2+ ionophore, PMA, nigericin, zymosan or IL-8, and ACPA binding was studied using flow cytometry and confocal microscopy. The roles of PAD2 and PAD4 were studied using PAD-deficient mice or the PAD4 inhibitor BMS-P5. Results: ACPAs broadly targeted NET-like structures, but did not bind to intact cells or influence NETosis. We observed high clonal diversity in ACPA binding to neutrophil-derived antigens. PAD2 was dispensable, but most ACPA clones required PAD4 for neutrophil binding. Using ACPA preparations from different patients, we observed high patient-to-patient variability in targeting neutrophil-derived antigens and similarly in another cellular effect of ACPAs, the stimulation of osteoclast differentiation. Conclusions: Neutrophils can be important sources of citrullinated antigens under conditions that lead to PAD4 activation, NETosis and the extrusion of intracellular material. A substantial clonal diversity in targeting neutrophils and a high variability among individuals in neutrophil binding and osteoclast stimulation suggest that ACPAs may influence RA-related symptoms with high patient-to-patient variability.
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22
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Dunlap G, Wagner A, Meednu N, Zhang F, Jonsson AH, Wei K, Sakaue S, Nathan A, Bykerk VP, Donlin LT, Goodman SM, Firestein GS, Boyle DL, Holers VM, Moreland LW, Tabechian D, Pitzalis C, Filer A, Raychaudhuri S, Brenner MB, McDavid A, Rao DA, Anolik JH. Clonal associations of lymphocyte subsets and functional states revealed by single cell antigen receptor profiling of T and B cells in rheumatoid arthritis synovium. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.18.533282. [PMID: 36993527 PMCID: PMC10055242 DOI: 10.1101/2023.03.18.533282] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease initiated by antigen-specific T cells and B cells, which promote synovial inflammation through a complex set of interactions with innate immune and stromal cells. To better understand the phenotypes and clonal relationships of synovial T and B cells, we performed single-cell RNA and repertoire sequencing on paired synovial tissue and peripheral blood samples from 12 donors with seropositive RA ranging from early to chronic disease. Paired transcriptomic-repertoire analyses highlighted 3 clonally distinct CD4 T cells populations that were enriched in RA synovium: T peripheral helper (Tph) and T follicular helper (Tfh) cells, CCL5+ T cells, and T regulatory cells (Tregs). Among these cells, Tph cells showed a unique transcriptomic signature of recent T cell receptor (TCR) activation, and clonally expanded Tph cells expressed an elevated transcriptomic effector signature compared to non-expanded Tph cells. CD8 T cells showed higher oligoclonality than CD4 T cells, and the largest CD8 T cell clones in synovium were highly enriched in GZMK+ cells. TCR analyses revealed CD8 T cells with likely viral-reactive TCRs distributed across transcriptomic clusters and definitively identified MAIT cells in synovium, which showed transcriptomic features of TCR activation. Among B cells, non-naive B cells including age-associated B cells (ABC), NR4A1+ activated B cells, and plasma cells, were enriched in synovium and had higher somatic hypermutation rates compared to blood B cells. Synovial B cells demonstrated substantial clonal expansion, with ABC, memory, and activated B cells clonally linked to synovial plasma cells. Together, these results reveal clonal relationships between functionally distinct lymphocyte populations that infiltrate RA synovium.
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Affiliation(s)
- Garrett Dunlap
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
| | - Aaron Wagner
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry; Rochester, NY, USA
| | - Nida Meednu
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center; Rochester, NY, USA
| | - Fan Zhang
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital; Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital; Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School; Boston, MA, USA
- Broad Institute of MIT and Harvard; Cambridge, MA, USA
- Division of Rheumatology and the Center for Health Artificial Intelligence, University of Colorado School of Medicine; Aurora, CO, USA
| | - A Helena Jonsson
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
| | - Kevin Wei
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
| | - Saori Sakaue
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital; Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital; Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School; Boston, MA, USA
- Broad Institute of MIT and Harvard; Cambridge, MA, USA
| | - Aparna Nathan
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital; Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital; Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School; Boston, MA, USA
- Broad Institute of MIT and Harvard; Cambridge, MA, USA
| | - Vivian P Bykerk
- Hospital for Special Surgery; New York, NY, USA
- Weill Cornell Medicine; New York, NY, USA
| | - Laura T Donlin
- Hospital for Special Surgery; New York, NY, USA
- Weill Cornell Medicine; New York, NY, USA
| | - Susan M Goodman
- Hospital for Special Surgery; New York, NY, USA
- Weill Cornell Medicine; New York, NY, USA
| | - Gary S Firestein
- Division of Rheumatology, Allergy, and Immunology, University of California, San Diego; La Jolla, CA, USA
| | - David L Boyle
- Division of Rheumatology, Allergy, and Immunology, University of California, San Diego; La Jolla, CA, USA
| | - V Michael Holers
- Division of Rheumatology, University of Colorado School of Medicine; Aurora, CO, USA
| | - Larry W Moreland
- Division of Rheumatology, University of Colorado School of Medicine; Aurora, CO, USA
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine; Pittsburgh, PA, USA
| | - Darren Tabechian
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center; Rochester, NY, USA
| | - Costantino Pitzalis
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute, Queen Mary University of London; London, UK
| | - Andrew Filer
- Rheumatology Research Group, Institute for Inflammation and Ageing, University of Birmingham, NIHR Birmingham Biomedical Research Center and Clinical Research Facility, University of Birmingham, Queen Elizabeth Hospital; Birmingham, UK
| | - Soumya Raychaudhuri
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
- Center for Data Sciences, Brigham and Women's Hospital; Boston, MA, USA
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital; Boston, MA, USA
- Department of Biomedical Informatics, Harvard Medical School; Boston, MA, USA
- Broad Institute of MIT and Harvard; Cambridge, MA, USA
- Versus Arthritis Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, The University of Manchester; Manchester, UK
| | - Michael B Brenner
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
| | - Andrew McDavid
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry; Rochester, NY, USA
| | - Deepak A Rao
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School; Boston, MA, USA
| | - Jennifer H Anolik
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center; Rochester, NY, USA
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23
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Molecular Mechanisms of Neutrophil Extracellular Trap (NETs) Degradation. Int J Mol Sci 2023; 24:ijms24054896. [PMID: 36902325 PMCID: PMC10002918 DOI: 10.3390/ijms24054896] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Although many studies have been exploring the mechanisms driving NETs formation, much less attention has been paid to the degradation and elimination of these structures. The NETs clearance and the effective removal of extracellular DNA, enzymatic proteins (neutrophil elastase, proteinase 3, myeloperoxidase) or histones are necessary to maintain tissue homeostasis, to prevent inflammation and to avoid the presentation of self-antigens. The persistence and overabundance of DNA fibers in the circulation and tissues may have dramatic consequences for a host leading to the development of various systemic and local damage. NETs are cleaved by a concerted action of extracellular and secreted deoxyribonucleases (DNases) followed by intracellular degradation by macrophages. NETs accumulation depends on the ability of DNase I and DNAse II to hydrolyze DNA. Furthermore, the macrophages actively engulf NETs and this event is facilitated by the preprocessing of NETs by DNase I. The purpose of this review is to present and discuss the current knowledge about the mechanisms of NETs degradation and its role in the pathogenesis of thrombosis, autoimmune diseases, cancer and severe infections, as well as to discuss the possibilities for potential therapeutic interventions. Several anti-NETs approaches had therapeutic effects in animal models of cancer and autoimmune diseases; nevertheless, the development of new drugs for patients needs further study for an effective development of clinical compounds that are able to target NETs.
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24
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Sadeghi M, Dehnavi S, Jamialahmadi T, Johnston TP, Sahebkar A. Neutrophil extracellular trap: A key player in the pathogenesis of autoimmune diseases. Int Immunopharmacol 2023; 116:109843. [PMID: 36764274 DOI: 10.1016/j.intimp.2023.109843] [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: 01/05/2023] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/11/2023]
Abstract
Numerous studies suggest that neutrophils might have a crucial role in the pathogenesis of systemic autoimmune diseases through neutrophil extracellular trap (NET) formation, production of pro-inflammatory cytokines, and organ destruction. NET components that are released into extracellular spaces can be considered autoantigens, which contribute to causing a break in self-tolerance. Subsequently, this leads to the development of autoimmune responses in predisposed individuals. Additionally, an imbalance between NET formation and NET degradation may prolong immune system contact with these modified autoantigens and enhance NET-induced tissue damage. In this review, we discuss the generation and clearance of the NET, as well as the role of NETosis in the pathogenesis of autoimmune disorders, including rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV), multiple sclerosis (MS), psoriasis, antiphospholipid syndrome (APS), and Type-1 diabetes mellitus (T1DM).
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Affiliation(s)
- Mahvash Sadeghi
- Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sajad Dehnavi
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Tannaz Jamialahmadi
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Thomas P Johnston
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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25
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Affiliation(s)
- Ellen M Gravallese
- From the Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston (E.M.G.); and the Division of Rheumatology, Allergy, and Immunology, University of California at San Diego School of Medicine, La Jolla (G.S.F.)
| | - Gary S Firestein
- From the Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston (E.M.G.); and the Division of Rheumatology, Allergy, and Immunology, University of California at San Diego School of Medicine, La Jolla (G.S.F.)
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26
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Chriswell ME, Lefferts AR, Clay MR, Hsu AR, Seifert J, Feser ML, Rims C, Bloom MS, Bemis EA, Liu S, Maerz MD, Frank DN, Demoruelle MK, Deane KD, James EA, Buckner JH, Robinson WH, Holers VM, Kuhn KA. Clonal IgA and IgG autoantibodies from individuals at risk for rheumatoid arthritis identify an arthritogenic strain of Subdoligranulum. Sci Transl Med 2022; 14. [PMID: 36288282 PMCID: PMC9804515 DOI: 10.1126/scitranslmed.abn5166 10.1126/scitranslmed.abn5166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The mucosal origins hypothesis of rheumatoid arthritis (RA) proposes a central role for mucosal immune responses in the initiation or perpetuation of the systemic autoimmunity that occurs with disease. However, the connection between the mucosa and systemic autoimmunity in RA remains unclear. Using dual immunoglobulin A (IgA) and IgG family plasmablast-derived monoclonal autoantibodies obtained from peripheral blood of individuals at risk for RA, we identified cross-reactivity between RA-relevant autoantigens and bacterial taxa in the closely related families Lachnospiraceae and Ruminococcaceae. After generating bacterial isolates within the Lachnospiraceae/Ruminococcaceae genus Subdoligranulum from the feces of an individual, we confirmed monoclonal antibody binding and CD4+ T cell activation in individuals with RA compared to control individuals. In addition, when Subdoligranulum isolate 7 but not isolate 1 colonized germ-free mice, it stimulated TH17 cell expansion, serum RA-relevant IgG autoantibodies, and joint swelling reminiscent of early RA, with histopathology characterized by antibody deposition and complement activation. Systemic immune responses were likely due to mucosal invasion along with the generation of colon-isolated lymphoid follicles driving increased fecal and serum IgA by isolate 7, because B and CD4+ T cell depletion not only halted intestinal immune responses but also eliminated detectable clinical disease. In aggregate, these findings demonstrate a mechanism of RA pathogenesis through which a specific intestinal strain of bacteria can drive systemic autoantibody generation and joint-centered antibody deposition and immune activation.
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Affiliation(s)
- Meagan E. Chriswell
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Adam R. Lefferts
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Michael R. Clay
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Alex Ren Hsu
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - Jennifer Seifert
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Marie L. Feser
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Cliff Rims
- Benaroya Research Institute, Seattle, WA 98101
| | - Michelle S. Bloom
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - Elizabeth A. Bemis
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Sucai Liu
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | | | - Daniel N. Frank
- Division of Infectious Disease, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - M. Kristen Demoruelle
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kevin D. Deane
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | | | | | - William H. Robinson
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - V. Michael Holers
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kristine A. Kuhn
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045,Corresponding Author:
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27
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Chriswell ME, Lefferts AR, Clay MR, Hsu AR, Seifert J, Feser ML, Rims C, Bloom MS, Bemis EA, Liu S, Maerz MD, Frank DN, Demoruelle MK, Deane KD, James EA, Buckner JH, Robinson WH, Holers VM, Kuhn KA. Clonal IgA and IgG autoantibodies from individuals at risk for rheumatoid arthritis identify an arthritogenic strain of Subdoligranulum. Sci Transl Med 2022; 14:eabn5166. [PMID: 36288282 PMCID: PMC9804515 DOI: 10.1126/scitranslmed.abn5166] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The mucosal origins hypothesis of rheumatoid arthritis (RA) proposes a central role for mucosal immune responses in the initiation or perpetuation of the systemic autoimmunity that occurs with disease. However, the connection between the mucosa and systemic autoimmunity in RA remains unclear. Using dual immunoglobulin A (IgA) and IgG family plasmablast-derived monoclonal autoantibodies obtained from peripheral blood of individuals at risk for RA, we identified cross-reactivity between RA-relevant autoantigens and bacterial taxa in the closely related families Lachnospiraceae and Ruminococcaceae. After generating bacterial isolates within the Lachnospiraceae/Ruminococcaceae genus Subdoligranulum from the feces of an individual, we confirmed monoclonal antibody binding and CD4+ T cell activation in individuals with RA compared to control individuals. In addition, when Subdoligranulum isolate 7 but not isolate 1 colonized germ-free mice, it stimulated TH17 cell expansion, serum RA-relevant IgG autoantibodies, and joint swelling reminiscent of early RA, with histopathology characterized by antibody deposition and complement activation. Systemic immune responses were likely due to mucosal invasion along with the generation of colon-isolated lymphoid follicles driving increased fecal and serum IgA by isolate 7, because B and CD4+ T cell depletion not only halted intestinal immune responses but also eliminated detectable clinical disease. In aggregate, these findings demonstrate a mechanism of RA pathogenesis through which a specific intestinal strain of bacteria can drive systemic autoantibody generation and joint-centered antibody deposition and immune activation.
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Affiliation(s)
- Meagan E. Chriswell
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Adam R. Lefferts
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Michael R. Clay
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Alex Ren Hsu
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - Jennifer Seifert
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Marie L. Feser
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Cliff Rims
- Benaroya Research Institute, Seattle, WA 98101
| | - Michelle S. Bloom
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - Elizabeth A. Bemis
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Sucai Liu
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | | | - Daniel N. Frank
- Division of Infectious Disease, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - M. Kristen Demoruelle
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kevin D. Deane
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | | | | | - William H. Robinson
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305
| | - V. Michael Holers
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kristine A. Kuhn
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045,Corresponding Author:
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28
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Citrullination: A modification important in the pathogenesis of autoimmune diseases. Clin Immunol 2022; 245:109134. [DOI: 10.1016/j.clim.2022.109134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022]
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29
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Lactic Acid Regulation: A Potential Therapeutic Option in Rheumatoid Arthritis. J Immunol Res 2022; 2022:2280973. [PMID: 36061305 PMCID: PMC9433259 DOI: 10.1155/2022/2280973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, persistent autoimmune disease that causes severe joint tissue damage and irreversible disability. Cumulative evidence suggests that patients suffering from RA for long durations are at risk of functional damage to cardiovascular, kidney, lung, and other tissues. This seriously affects the quality of work and life of patients. To date, no clear etiology of RA has been found. Recent studies have revealed that the massive proliferation of synoviocytes and immune cells requires a large amount of energy supply. Rapid energy supply depends on the anaerobic glucose metabolic pathway in both RA animal models and clinical patients. Anaerobic glycolysis can increase intracellular lactic acid (LA) content. LA induces the overexpression of monocarboxylate transporters (MCTs) in cell membranes. MCTs rapidly transport LA from the intracellular to the intercellular or articular cavity. Hence, a relatively high accumulation of LA could be formed in the intercellular and articular cavities of inflammatory joints. Moreover, LA contributes to the migration and activation of immune cells. Immune cells proliferate and secrete interleukins (IL) including IL-1, IL-2, IL-13, IL-17, and other inflammatory factors. These inflammatory factors enhance the immune inflammatory response of the body and aggravate the condition of RA patients. In this paper, the effects of LA on RA pathogenesis will be summarized from the perspective of the production, transport, and metabolism of synoviocytes and immune cells. Additionally, the drugs involved in the production, transport, and metabolism of LA are highlighted.
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30
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Romão VC, Fonseca JE. Disease mechanisms in preclinical rheumatoid arthritis: A narrative review. Front Med (Lausanne) 2022; 9:689711. [PMID: 36059838 PMCID: PMC9437632 DOI: 10.3389/fmed.2022.689711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/04/2022] [Indexed: 11/20/2022] Open
Abstract
In the last decades, the concept of preclinical rheumatoid arthritis (RA) has become established. In fact, the discovery that disease mechanisms start years before the onset of clinical RA has been one of the major recent insights in the understanding of RA pathogenesis. In accordance with the complex nature of the disease, preclinical events extend over several sequential phases. In a genetically predisposed host, environmental factors will further increase susceptibility for incident RA. In the initial steps of preclinical disease, immune disturbance mechanisms take place outside the joint compartment, namely in mucosal surfaces, such as the lung, gums or gut. Herein, the persistent immunologic response to altered antigens will lead to breach of tolerance and trigger autoimmunity. In a second phase, the immune response matures and is amplified at a systemic level, with epitope spreading and widening of the autoantibody repertoire. Finally, the synovial and bone compartment are targeted by specific autoantibodies against modified antigens, initiating a local inflammatory response that will eventually culminate in clinically evident synovitis. In this review, we discuss the elaborate disease mechanisms in place during preclinical RA, providing a broad perspective in the light of current evidence.
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Affiliation(s)
- Vasco C. Romão
- Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisbon Academic Medical Centre and European Reference Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ERN-ReCONNET), Lisbon, Portugal
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Lisbon, Portugal
| | - João Eurico Fonseca
- Rheumatology Research Unit, Faculdade de Medicina, Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Lisbon, Portugal
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31
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Maggi J, Carrascal M, Soto L, Neira O, Cuéllar MC, Aravena O, James EA, Abian J, Jaraquemada D, Catalan D, Aguillón JC. Isolation of HLA-DR-naturally presented peptides identifies T-cell epitopes for rheumatoid arthritis. Ann Rheum Dis 2022; 81:1096-1105. [PMID: 35459695 DOI: 10.1136/annrheumdis-2021-220371] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/08/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) immunopathogenesis revolves around the presentation of poorly characterised self-peptides by human leucocyte antigen (HLA)-class II molecules on the surface of antigen-presenting cells to autoreactive CD4 +T cells. Here, we analysed the HLA-DR-associated peptidome of synovial tissue (ST) and of dendritic cells (DCs) pulsed with synovial fluid (SF) or ST, to identify potential T-cell epitopes for RA. METHODS HLA-DR/peptide complexes were isolated from RA ST samples (n=3) and monocyte-derived DCs, generated from healthy donors carrying RA-associated shared epitope positive HLA-DR molecules and pulsed with RA SF (n=7) or ST (n=2). Peptide sequencing was performed by high-resolution mass spectrometry. The immunostimulatory capacity of selected peptides was evaluated on peripheral blood mononuclear cells from patients with RA (n=29) and healthy subjects (n=12) by flow cytometry. RESULTS We identified between 103 and 888 HLA-DR-naturally presented peptides per sample. We selected 37 native and six citrullinated (cit)-peptides for stimulation assays. Six of these peptides increased the expression of CD40L on CD4 +T cells patients with RA, and specifically triggered IFN-γ expression on RA CD4 +T cells compared with healthy subjects. Finally, the frequency of IFN-γ-producing CD4 +T cells specific for a myeloperoxidase-derived peptide showed a positive correlation with disease activity. CONCLUSIONS We significantly expanded the peptide repertoire presented by HLA-DR molecules in a physiologically relevant context, identifying six new epitopes recognised by CD4 +T cells from patients with RA. This information is important for a better understanding of the disease immunopathology, as well as for designing tolerising antigen-specific immunotherapies.
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Affiliation(s)
- Jaxaira Maggi
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile Facultad de Medicina, Santiago, Chile
| | - Montserrat Carrascal
- Biological and Environmental Proteomics Group, IIBB-CSIC, IDIBAPS, Barcelona, Spain
| | - Lilian Soto
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile Facultad de Medicina, Santiago, Chile
- Departamento de Medicina, Unidad del Dolor, Hospital Clinico de la Universidad de Chile Jose Joaquin Aguirre, Santiago, Chile
| | - Oscar Neira
- Servicio de Reumatología, Hospital del Salvador, Universidad de Chile, Santiago, Chile
| | - María C Cuéllar
- Servicio de Reumatología, Hospital del Salvador, Universidad de Chile, Santiago, Chile
| | - Octavio Aravena
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile Facultad de Medicina, Santiago, Chile
| | - Eddie A James
- Translational Research Program, Benaroya Research Institute, Seattle, Washington, USA
| | - Joaquin Abian
- Biological and Environmental Proteomics Group, IIBB-CSIC, IDIBAPS, Barcelona, Spain
| | - Dolores Jaraquemada
- Immunology Unit, Cell Biology, Physiology and Immunology Department, Institut de Biotecnologia i Biomedicina, Universitat de Barcelona, Barcelona, Spain
| | - Diego Catalan
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile Facultad de Medicina, Santiago, Chile
| | - Juan C Aguillón
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile Facultad de Medicina, Santiago, Chile
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32
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Pfister H. Neutrophil Extracellular Traps and Neutrophil-Derived Extracellular Vesicles: Common Players in Neutrophil Effector Functions. Diagnostics (Basel) 2022; 12:diagnostics12071715. [PMID: 35885618 PMCID: PMC9323717 DOI: 10.3390/diagnostics12071715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 02/06/2023] Open
Abstract
Neutrophil granulocytes are a central component of the innate immune system. In recent years, they have gained considerable attention due to newly discovered biological effector functions and their involvement in various pathological conditions. They have been shown to trigger mechanisms that can either promote or inhibit the development of autoimmunity, thrombosis, and cancer. One mechanism for their modulatory effect is the release of extracellular vesicles (EVs), that trigger appropriate signaling pathways in immune cells and other target cells. In addition, activated neutrophils can release bactericidal DNA fibers decorated with proteins from neutrophil granules (neutrophil extracellular traps, NETs). While NETs are very effective in limiting pathogens, they can also cause severe damage if released in excess or cleared inefficiently. Since NETs and EVs share a variety of neutrophil molecules and initially act in the same microenvironment, differential biochemical and functional analysis is particularly challenging. This review focuses on the biochemical and functional parallels and the extent to which the overlapping spectrum of effector molecules has an impact on biological and pathological effects.
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Affiliation(s)
- Heiko Pfister
- Munich Biomarker Research Center, Institute of Laboratory Medicine, German Heart Center Munich, Technical University Munich, D-80636 Munich, Germany
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33
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Wang X, Fan D, Cao X, Ye Q, Wang Q, Zhang M, Xiao C. The Role of Reactive Oxygen Species in the Rheumatoid Arthritis-Associated Synovial Microenvironment. Antioxidants (Basel) 2022; 11:antiox11061153. [PMID: 35740050 PMCID: PMC9220354 DOI: 10.3390/antiox11061153] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 12/21/2022] Open
Abstract
Rheumatoid arthritis (RA) is an inflammatory disease that begins with a loss of tolerance to modified self-antigens and immune system abnormalities, eventually leading to synovitis and bone and cartilage degradation. Reactive oxygen species (ROS) are commonly used as destructive or modifying agents of cellular components or they act as signaling molecules in the immune system. During the development of RA, a hypoxic and inflammatory situation in the synovium maintains ROS generation, which can be sustained by increased DNA damage and malfunctioning mitochondria in a feedback loop. Oxidative stress caused by abundant ROS production has also been shown to be associated with synovitis in RA. The goal of this review is to examine the functions of ROS and related molecular mechanisms in diverse cells in the synovial microenvironment of RA. The strategies relying on regulating ROS to treat RA are also reviewed.
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Affiliation(s)
- Xing Wang
- School of Clinical Medicine, China-Japan Friendship Hospital, Beijing University of Chinese Medicine, Beijing 100029, China; (X.W.); (Q.Y.); (Q.W.)
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
| | - Danping Fan
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Xiaoxue Cao
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Qinbin Ye
- School of Clinical Medicine, China-Japan Friendship Hospital, Beijing University of Chinese Medicine, Beijing 100029, China; (X.W.); (Q.Y.); (Q.W.)
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
| | - Qiong Wang
- School of Clinical Medicine, China-Japan Friendship Hospital, Beijing University of Chinese Medicine, Beijing 100029, China; (X.W.); (Q.Y.); (Q.W.)
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
| | - Mengxiao Zhang
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
| | - Cheng Xiao
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China; (D.F.); (X.C.); (M.Z.)
- Department of Emergency, China-Japan Friendship Hospital, Beijing 100029, China
- Correspondence: or
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34
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Role of tertiary lymphoid organs in the regulation of immune responses in the periphery. Cell Mol Life Sci 2022; 79:359. [PMID: 35689679 PMCID: PMC9188279 DOI: 10.1007/s00018-022-04388-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/28/2022] [Accepted: 05/20/2022] [Indexed: 12/12/2022]
Abstract
Tertiary lymphoid organs (TLOs) are collections of immune cells resembling secondary lymphoid organs (SLOs) that form in peripheral, non-lymphoid tissues in response to local chronic inflammation. While their formation mimics embryologic lymphoid organogenesis, TLOs form after birth at ectopic sites in response to local inflammation resulting in their ability to mount diverse immune responses. The structure of TLOs can vary from clusters of B and T lymphocytes to highly organized structures with B and T lymphocyte compartments, germinal centers, and lymphatic vessels (LVs) and high endothelial venules (HEVs), allowing them to generate robust immune responses at sites of tissue injury. Although our understanding of the formation and function of these structures has improved greatly over the last 30 years, their role as mediators of protective or pathologic immune responses in certain chronic inflammatory diseases remains enigmatic and may differ based on the local tissue microenvironment in which they form. In this review, we highlight the role of TLOs in the regulation of immune responses in chronic infection, chronic inflammatory and autoimmune diseases, cancer, and solid organ transplantation.
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35
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Koziel J, Potempa J. Pros and cons of causative association between periodontitis and rheumatoid arthritis. Periodontol 2000 2022; 89:83-98. [PMID: 35262966 PMCID: PMC9935644 DOI: 10.1111/prd.12432] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 06/28/2021] [Accepted: 07/03/2021] [Indexed: 02/05/2023]
Abstract
Research in recent decades has brought significant advancements in understanding of the molecular basis of the etiology of autoimmune diseases, including rheumatoid arthritis, a common systemic disease in which an inappropriate or inadequate immune response to environmental challenges leads to joint destruction. Recent studies have indicated that the classical viewpoint of the immunological processes underpinning the pathobiology of rheumatoid arthritis is restricted and needs to be expanded to include a more holistic and interdisciplinary approach incorporating bacteria-induced inflammatory reactions as an important pathway in rheumatoid arthritis etiology. Here, we discuss in detail data showing the clinical and molecular association of rheumatoid arthritis development with periodontal diseases. We also describe the unique role of periopathogens, which have been proposed to be crucial in the initiation and progression of this autoimmune pathological disorder.
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Affiliation(s)
- Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland.,Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, Louisville, Kentucky, USA
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36
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From risk to chronicity: evolution of autoreactive B cell and antibody responses in rheumatoid arthritis. Nat Rev Rheumatol 2022; 18:371-383. [PMID: 35606567 DOI: 10.1038/s41584-022-00786-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2022] [Indexed: 02/07/2023]
Abstract
The presence of disease-specific autoantibody responses and the efficacy of B cell-targeting therapies in rheumatoid arthritis (RA) indicate a pivotal role for B cells in disease pathogenesis. Important advances have shaped our understanding of the involvement of autoantibodies and autoreactive B cells in the disease process. In RA, autoantibodies target antigens with a variety of post-translational modifications such as carbamylation, acetylation and citrullination. B cell responses against citrullinated antigens generate anti-citrullinated protein antibodies (ACPAs), which are themselves modified in the variable domains by abundant N-linked glycans. Insights into the induction of autoreactive B cells against antigens with post-translational modifications and the development of autoantibody features such as isotype usage, epitope recognition, avidity and glycosylation reveal their relationship to particular RA risk factors and clinical phenotypes. Glycosylation of the ACPA variable domain, for example, seems to predict RA onset in ACPA+ healthy individuals, possibly because it affects B cell receptor signalling. Moreover, ACPA-expressing B cells show dynamic phenotypic changes and develop a continuously proliferative and activated phenotype that can persist in patients who are in drug-induced clinical remission. Together, these findings can be integrated into a conceptual framework of immunological autoreactivity in RA, delineating how it develops and persists and why disease activity recurs when therapy is tapered or stopped.
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37
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Meednu N, Rangel-Moreno J, Zhang F, Escalera-Rivera K, Corsiero E, Prediletto E, DiCarlo E, Goodman S, Donlin LT, Raychauduri S, Bombardieri M, Pitzalis C, Orange DE, McDavid A, Anolik JH. Dynamic spectrum of ectopic lymphoid B cell activation and hypermutation in the RA synovium characterized by NR4A nuclear receptor expression. Cell Rep 2022; 39:110766. [PMID: 35508128 PMCID: PMC9234997 DOI: 10.1016/j.celrep.2022.110766] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/13/2022] [Accepted: 04/11/2022] [Indexed: 11/20/2022] Open
Abstract
Ectopic lymphoid structures (ELS) can develop in rheumatoid arthritis (RA) synovial tissue, but the precise pathways of B cell activation and selection are not well understood. Here, we identify a synovial B cell population characterized by co-expression of a family of orphan nuclear receptors (NR4A1-3), which is highly enriched in RA synovial tissue. A transcriptomic profile of NR4A synovial B cells significantly overlaps with germinal center light zone B cells and an accrual of somatic hypermutation that correlates with loss of naive B cell state. NR4A B cells co-express lymphotoxins α and β and IL-6, supporting functions in ELS promotion. Expanded and shared clones between synovial NR4A B cells and plasma cells and the rapid upregulation with BCR stimulation point to in situ differentiation. Together, we identify a dynamic progression of B cell activation in RA synovial ELS, with NR4A transcription factors having an important role in local adaptive immune responses.
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Affiliation(s)
- Nida Meednu
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Javier Rangel-Moreno
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Fan Zhang
- Center for Data Sciences, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biomedical Informatics, Harvard Medical School, Boston, MA 02115, USA; Program in Medical and Population Genetics, Broad Institute, Cambridge, MA 02142, USA; Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Katherine Escalera-Rivera
- Department of Pathology, University of Rochester Medical Center, Rochester, NY 14642, USA; Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Elisa Corsiero
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute, Queen Mary University of London, EC1M 6BQ, London, UK
| | - Edoardo Prediletto
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute, Queen Mary University of London, EC1M 6BQ, London, UK
| | - Edward DiCarlo
- Department of Pathology and Laboratory Medicine, Hospital for Special Surgery, New York, NY 10021, USA
| | - Susan Goodman
- Hospital for Special Surgery, New York, NY 10021, USA; Weill Cornell Medicine, New York, NY, USA
| | - Laura T Donlin
- Hospital for Special Surgery, New York, NY 10021, USA; Weill Cornell Medicine, New York, NY, USA
| | - Soumya Raychauduri
- Center for Data Sciences, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biomedical Informatics, Harvard Medical School, Boston, MA 02115, USA; Program in Medical and Population Genetics, Broad Institute, Cambridge, MA 02142, USA; Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA 02115, USA; Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
| | - Michele Bombardieri
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute, Queen Mary University of London, EC1M 6BQ, London, UK
| | - Costantino Pitzalis
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute, Queen Mary University of London, EC1M 6BQ, London, UK
| | - Dana E Orange
- Hospital for Special Surgery, New York, NY 10021, USA; Rockefeller University, New York, NY 10028, USA
| | - Andrew McDavid
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, USA
| | - Jennifer H Anolik
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA; Department of Pathology, University of Rochester Medical Center, Rochester, NY 14642, USA; Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY 14642, USA.
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38
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Tout I, Miossec P. The role of B cells and their interactions with stromal cells in the context of inflammatory autoimmune diseases. Clin Exp Rheumatol 2022; 21:103098. [PMID: 35417796 DOI: 10.1016/j.autrev.2022.103098] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/08/2022] [Indexed: 02/07/2023]
Abstract
Interactions between B cells and stromal cells have essential functions in immune cell development and responses. During chronic inflammation, the pro-inflammatory microenvironment leads to changes in stromal cells, which acquire a pathogenic phenotype specific to each organ and disease. B cells are recruited to the site of inflammation and interact with these pathogenic stromal cells contributing to the disease's severity. In addition to producing autoantibodies, B cells contribute to the pathogenesis of autoimmune inflammatory diseases by serving as professional antigen-presenting cells, producing cytokines, and through additional mechanisms. This review describes the role of B cells and their interactions with stromal cells in chronic inflammation, with a focus on human disease, using three selected autoimmune inflammatory diseases: rheumatoid arthritis, systemic lupus erythematosus and multiple sclerosis. Understanding B cells roles and their interaction with stromal cells will help develop new therapeutic options for the treatment of autoimmune diseases.
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Affiliation(s)
- Issam Tout
- Department of Clinical Immunology and Rheumatology, Immunogenomics and Inflammation Research Unit, University of Lyon, Hospices Civils de Lyon, Edouard Herriot Hospital, 5 Place d'Arsonval, 69437 Lyon, France
| | - Pierre Miossec
- Department of Clinical Immunology and Rheumatology, Immunogenomics and Inflammation Research Unit, University of Lyon, Hospices Civils de Lyon, Edouard Herriot Hospital, 5 Place d'Arsonval, 69437 Lyon, France.
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39
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Jang S, Kwon EJ, Lee JJ. Rheumatoid Arthritis: Pathogenic Roles of Diverse Immune Cells. Int J Mol Sci 2022; 23:ijms23020905. [PMID: 35055087 PMCID: PMC8780115 DOI: 10.3390/ijms23020905] [Citation(s) in RCA: 148] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 02/06/2023] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, systemic autoimmune disease associated with synovial tissue proliferation, pannus formation, cartilage destruction, and systemic complications. Currently, advanced understandings of the pathologic mechanisms of autoreactive CD4+ T cells, B cells, macrophages, inflammatory cytokines, chemokines, and autoantibodies that cause RA have been achieved, despite the fact that much remains to be elucidated. This review provides an updated pathogenesis of RA which will unveil novel therapeutic targets.
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Affiliation(s)
- Sunhee Jang
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea; (S.J.); (E.-J.K.)
- Yonsei Hangang Hospital, 25 Mapodaero, Mapogu, Seoul 04167, Korea
| | - Eui-Jong Kwon
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea; (S.J.); (E.-J.K.)
- Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Research Institute, Armed Forces CBRN Defense Command, Seoul 06591, Korea
| | - Jennifer Jooha Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea; (S.J.); (E.-J.K.)
- Correspondence: ; Tel.: +82-2-2258-6010; Fax: +82-2-2258-2022
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40
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Polymorphonuclear Neutrophils in Rheumatoid Arthritis and Systemic Lupus Erythematosus: More Complicated Than Anticipated. IMMUNO 2022. [DOI: 10.3390/immuno2010007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Polymorphonuclear neutrophils (PMN) are the most abundant leucocytes in the circulation in humans. They represent a heterogeneous population exerting diverse functions through several activities. Usually described as typical pro-inflammatory cells, immunomodulatory properties of PMNs have been reported. Among others, once activated and depending on the stimulus, PMNs expel neutrophil extracellular traps (NET) in the extracellular space. NETs are complexes made of DNA and granule proteins representing an innate immune mechanism fighting infections. Nevertheless, an excess of NET formation might be involved in the development of inflammatory or autoimmune responses. Systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) are two chronic, inflammatory, autoimmune diseases of unknown etiology and affecting mostly women. Several abnormal or non-classical functions of PMNs or PMN sub-populations have been described in SLE and RA. Particularly, NETs have been suggested to trigger pro-inflammatory responses by exposing pro-inflammatory mediators. Likewise, NETs may be the targets of autoantibodies or even might trigger the development of autoantibodies by exposing autoantigens. In the present review, we will summarize heterogeneous properties of human PMNs and we will discuss recent evidence linking PMNs and NETs to the pathogenesis of both SLE and RA.
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Chamardani TM, Amiritavassoli S. Inhibition of NETosis for treatment purposes: friend or foe? Mol Cell Biochem 2022; 477:673-688. [PMID: 34993747 PMCID: PMC8736330 DOI: 10.1007/s11010-021-04315-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/25/2021] [Indexed: 12/29/2022]
Abstract
Active neutrophils participate in innate and adaptive immune responses through various mechanisms, one of the most important of which is the formation and release of neutrophil extracellular traps (NETs). The NETs are composed of network-like structures made of histone proteins, DNA and other released antibacterial proteins by activated neutrophils, and evidence suggests that in addition to the innate defense against infections, NETosis plays an important role in the pathogenesis of several other non-infectious pathological states, such as autoimmune diseases and even cancer. Therefore, targeting NET has become one of the important therapeutic approaches and has been considered by researchers. NET inhibitors or other molecules involved in the NET formation, such as the protein arginine deiminase 4 (PAD4) enzyme, an arginine-to-citrulline converter, participate in chromatin condensation and NET formation, is the basis of this therapeutic approach. The important point is whether complete inhibition of NETosis can be helpful because by inhibiting this mechanism, the activity of neutrophils is suppressed. In this review, the biology of NETosis and its role in the pathogenesis of some important diseases have been summarized, and the consequences of treatment based on inhibition of NET formation have been discussed.
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42
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El Shikh MEM, El Sayed R, Aly NAR, Prediletto E, Hands R, Fossati-Jimack L, Bombardieri M, Lewis MJ, Pitzalis C. Follicular dendritic cell differentiation is associated with distinct synovial pathotype signatures in rheumatoid arthritis. Front Med (Lausanne) 2022; 9:1013660. [PMID: 36465908 PMCID: PMC9709129 DOI: 10.3389/fmed.2022.1013660] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/24/2022] [Indexed: 11/17/2022] Open
Abstract
Follicular dendritic cells (FDCs) fundamentally contribute to the formation of synovial ectopic lymphoid-like structures in rheumatoid arthritis (RA) which is associated with poor clinical prognosis. Despite this critical role, regulation of FDC development in the RA synovium and its correlation with synovial pathotype differentiation remained largely unknown. Here, we demonstrate that CNA.42+ FDCs distinctively express the pericyte/fibroblast-associated markers PDGFR-β, NG2, and Thy-1 in the synovial perivascular space but not in established follicles. In addition, synovial RNA-Seq analysis revealed that expression of the perivascular FDC markers was strongly correlated with PDGF-BB and fibroid synovitis, whereas TNF-α/LT-β was significantly associated with lymphoid synovitis and expression of CR1, CR2, and FcγRIIB characteristic of mature FDCs in lymphoid follicles. Moreover, PDGF-BB induced CNA.42+ FDC differentiation and CXCL13 secretion from NG2+ synovial pericytes, and together with TNF-α/LT-β conversely regulated early and late FDC differentiation genes in unsorted RA synovial fibroblasts (RASF) and this was confirmed in flow sorted stromal cell subsets. Furthermore, RASF TNF-αR expression was upregulated by TNF-α/LT-β and PDGF-BB; and TNF-α/LT-β-activated RASF retained ICs and induced B cell activation in in vitro germinal center reactions typical of FDCs. Additionally, FDCs trapped peptidyl citrulline, and strongly correlated with IL-6 expression, and plasma cell, B cell, and T cell infiltration of the RA synovium. Moreover, synovial FDCs were significantly associated with RA disease activity and radiographic features of tissue damage. To the best of our knowledge, this is the first report describing the reciprocal interaction between PDGF-BB and TNF-α/LT-β in synovial FDC development and evolution of RA histological pathotypes. Selective targeting of this interplay could inhibit FDC differentiation and potentially ameliorate RA in clinically severe and drug-resistant patients.
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43
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He J, Ju J, Wang X. The current status of anti-citrullinated protein antibodies and citrullinated protein-reactive B cells in the pathogenesis of rheumatoid arthritis. Mol Biol Rep 2021; 49:2475-2485. [PMID: 34855107 DOI: 10.1007/s11033-021-07034-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 11/26/2021] [Indexed: 11/26/2022]
Abstract
Anti-citrullinated protein antibodies are a hallmark of rheumatoid arthritis. It is widely acknowledged that the presence of ACPAs is the result of the interaction of genes, the environment and epigenetic modifications. The mechanism by which the factors, especially citrullination and ACPA glycosylation, affect ACPAs is still unclear. In this article, we review the presence of the ACPAs in RA and their relationship with clinical manifestations. The pathogenicity of ACPAs and B cells in RA was also summarized. A growing body of evidence has shown that ACPA-positive patients have more serious bone erosion and destruction and poor clinical prognosis than ACPA-negative patients. Recently, with the direct study of citrullinated protein-reactive B cells, their role in the development of rheumatoid arthritis has been further understood. It indicates that further understanding of the mechanism of ACPAs and CP-reactive B cells would beneficial in the prevention and treatment of RA.
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Affiliation(s)
- Jia He
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - JiYu Ju
- Department of Immunology, Weifang Medical University, Weifang, China
| | - XiaoDong Wang
- Department of Rheumatology and Immunology, Affiliated Hospital of Weifang Medical University, Weifang, China.
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44
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Abstract
Rheumatoid Arthritis (RA) is a chronic systemic autoimmune disease. RA mainly affects synovial joints, with inflammation of the synovial membrane (synovitis), characterised by neo-angiogenesis, hyperplasia of lining layer, and immune cell infiltration that drive local inflammation and, if untreated, can lead to joint destruction and disability. In parallel to the well-known clinical heterogeneity, the underlying synovitis can also be significantly heterogeneous, both at cellular and molecular level, which can at least in part explain why despite the availability of highly effective treatment options, a large proportion of patients are resistant to some individual treatments. The assimilation of recent high-throughput data from analysis at the single-cell level with rigorous and high-quality clinical outcomes obtained from large randomised clinical trials support the definition of disease and treatment response endotypes. Looking ahead, the integration of histological and molecular signatures from the diseased tissue into clinical algorithms may help decision making in the management of patients with Rheumatoid Arthritis in clinical practice.
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45
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Feng Q, Xia W, Wang S, Dai G, Jiao W, Guo N, Li H, Zhang G. Etodolac improves collagen induced rheumatoid arthritis in rats by inhibiting synovial inflammation, fibrosis and hyperplasia. MOLECULAR BIOMEDICINE 2021; 2:33. [PMID: 35006449 PMCID: PMC8607370 DOI: 10.1186/s43556-021-00052-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 08/04/2021] [Indexed: 12/14/2022] Open
Abstract
Synovial hyperplasia is the main cause of chronic rheumatoid arthritis (RA), but the mechanism of synovial hyperplasia is still unclear. Etodolac (ETD) is a selective COX-2 inhibitor for relieving pain and stiffness in RA, but the disease modifying effect is still lack of evidence. Proteomics method was used to study the differential proteome of synovial tissue in collagen induced arthritis (CIA) in rats. With the help of STRING analysis, the upregulated proteins enriched in the cluster of complement and coagulation cascades and platelet degranulation were highlighted, these proteins with fibrogenic factors Lum, CIV, CXI and Tgfbi participated in the synovial inflammation, fibrosis and hyperplasia in CIA. Based on KOG function class analysis, the proteins involved in the events of the central dogma was explored. They might be hyperplasia related proteins for most of them are related to the proliferation of cancer. ETD significantly attenuated synovial inflammation, fibrosis and hyperplasia in CIA rats by downregulating these proteins. Several proteins have not been observed in RA so far, such as Tmsb4x, Pura, Nfic, Ruvbl1, Snrpd3, U2af2, Srrm2, Srsf7, Elavl1, Hnrnph1, Wars, Yars, Bzw2, Mcts1, Eif4b, Ctsh, Lamp1, Dpp7, Ptges3, Cdc37 and Septin9, they might be potentials targets for RA. Blood biochemistry tests showed the safety of 7 months use of ETD on rats. In conclusion, present study displayed a comprehensive mechanism of synovial hyperplasia in CIA rats, on this basis, the clinical value of ETD in the treatment of RA was well confirmed.
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Affiliation(s)
- Qin Feng
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China.,National Engineering and Technology Research Center of Chirality Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Wenkai Xia
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Shenglan Wang
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Guoxin Dai
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Weimei Jiao
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Na Guo
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Honghua Li
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China.,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China
| | - Guimin Zhang
- Lunan Pharmaceutical Group Co., Ltd., Linyi, China. .,Center for New Drug Safety Evaluation of Lunan Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China. .,National Engineering and Technology Research Center of Chirality Pharmaceutical, Lunan Pharmaceutical Group Co. Ltd., Linyi, China.
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46
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Karmakar U, Vermeren S. Crosstalk between B cells and neutrophils in rheumatoid arthritis. Immunology 2021; 164:689-700. [PMID: 34478165 PMCID: PMC8561113 DOI: 10.1111/imm.13412] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/30/2021] [Indexed: 12/13/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, systemic autoimmune disease without known cure that primarily affects synovial joints. RA has a prevalence of approximately 1% of the population worldwide. A vicious circle between two critical immune cell types, B cells and neutrophils, develops and promotes disease. Pathogenic anti‐citrullinated protein antibodies (ACPA) directed against a range of citrullinated epitopes are abundant in both plasma and synovial fluid of RA patients. In addition to stimulating numerous cell types, ACPA and other autoantibodies, notably rheumatoid factor, form immune complexes (ICs) that potently activate neutrophils. Attracted to the synovium by abundant chemokines, neutrophils are locally stimulated by ICs. They generate cytokines and release cytotoxic compounds including neutrophil extracellular traps (NETs), strands of decondensed chromatin decorated with citrullinated histones and granule‐derived neutrophil proteins, which are particularly abundant in the synovial fluid. In this way, neutrophils generate citrullinated epitopes and release peptidylarginine deiminase (PAD) enzymes capable of citrullinating extracellular proteins in the rheumatic joint, contributing to renewed ACPA generation. This review article focusses on the central function of citrullination, a post‐translational modification of arginine residues in RA. The discussion includes ACPA and related autoantibodies, somatic hypermutation‐mediated escape from negative selection by autoreactive B cells, promotion of the dominance of citrullinated antigens by genetic and lifestyle susceptibility factors and the vicious circle between ACPA‐producing pathogenic B cells and NET‐producing neutrophils in RA.
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Affiliation(s)
- Utsa Karmakar
- Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK
| | - Sonja Vermeren
- Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK
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47
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Okamoto Y, Devoe S, Seto N, Minarchick V, Wilson T, Rothfuss HM, Mohning MP, Arbet J, Kroehl M, Visser A, August J, Thomas SM, Lenis Charry L, Fleischer C, Feser ML, Frazer-Abel AA, Norris JM, Cherrington BD, Janssen WJ, Kaplan MJ, Deane KD, Holers VM, Demoruelle MK. Sputum Neutrophil Extracellular Trap Subsets Associate with IgA Anti-Citrullinated Protein Antibodies in Subjects At-Risk for Rheumatoid Arthritis. Arthritis Rheumatol 2021; 74:38-48. [PMID: 34369110 PMCID: PMC8712364 DOI: 10.1002/art.41948] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 08/03/2021] [Indexed: 11/06/2022]
Abstract
Objective Mechanisms leading to anti–citrullinated protein antibody (ACPA) generation in rheumatoid arthritis (RA) are hypothesized to originate in the lung. We undertook this study to understand associations between neutrophil extracellular trap (NET) formation in the lung and local ACPA generation in subjects at risk of developing RA. Methods Induced sputum was collected from 49 subjects at risk of developing RA, 12 patients with RA, and 18 controls. Sputum neutrophils were tested for ex vivo NET formation, and sputum‐induced NET formation of control neutrophils was measured using immunofluorescence imaging. Sputum macrophages were tested for ex vivo endocytosis of apoptotic and opsonized cells. Levels of ACPA, NET remnants, and inflammatory proteins were quantified in sputum supernatant. Results Spontaneous citrullinated histone H3 (Cit‐H3)–expressing NET formation was higher in sputum neutrophils from at‐risk subjects and RA patients compared to controls (median 12%, 22%, and 0%, respectively; P < 0.01). In at‐risk subjects, sputum IgA ACPA correlated with the percentage of neutrophils that underwent Cit‐H3+ NET formation (r = 0.49, P = 0.002) and levels of Cit‐H3+ NET remnants (r = 0.70, P < 0.001). Reduced endocytic capacity of sputum macrophages was found in at‐risk subjects and RA patients compared to controls. Using a mediation model, we found that sputum inflammatory proteins were associated with sputum IgA ACPA through a pathway mediated by Cit‐H3+ NET remnants. Sputum‐induced Cit‐H3+ NET formation also correlated with sputum levels of interleukin‐1β (IL‐1β), IL‐6, and tumor necrosis factor in at‐risk subjects, suggesting a causal relationship. Conclusion These data support a potential mechanism for mucosal ACPA generation in subjects at risk of developing RA, whereby inflammation leads to increased citrullinated protein–expressing NETs that promote local ACPA generation.
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Affiliation(s)
- Yuko Okamoto
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA.,Tokyo Women's Medical University School of Medicine, Department of Rheumatology, Tokyo, Japan
| | - Stephanie Devoe
- University of Colorado Denver, Department of Immunology, Aurora, CO, USA
| | - Nickie Seto
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda
| | - Valerie Minarchick
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Timothy Wilson
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Heather M Rothfuss
- University of Wyoming, Department of Zoology and Physiology, Laramie, WY, USA
| | - Michael P Mohning
- National Jewish Health, Division of Pulmonary, Critical Care and Sleep Medicine, Denver, CO, USA
| | - Jaron Arbet
- University of Colorado Denver, Department of Biostatistics and Informatics, Aurora, CO, USA
| | - Miranda Kroehl
- University of Colorado Denver, Department of Biostatistics and Informatics, Aurora, CO, USA
| | - Ashley Visser
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Justin August
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Stacey M Thomas
- National Jewish Health, Division of Pulmonary, Critical Care and Sleep Medicine, Denver, CO, USA
| | - Laura Lenis Charry
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Chelsie Fleischer
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - Marie L Feser
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | | | - Jill M Norris
- Colorado School of Public Health, Department of Epidemiology, Aurora, CO, USA
| | - Brian D Cherrington
- University of Wyoming, Department of Zoology and Physiology, Laramie, WY, USA
| | - William J Janssen
- National Jewish Health, Division of Pulmonary, Critical Care and Sleep Medicine, Denver, CO, USA
| | - Mariana J Kaplan
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda
| | - Kevin D Deane
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
| | - V Michael Holers
- University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA
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48
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Hill DG, Ward A, Nicholson LB, Jones GW. Emerging roles for IL-6 family cytokines as positive and negative regulators of ectopic lymphoid structures. Cytokine 2021; 146:155650. [PMID: 34343865 DOI: 10.1016/j.cyto.2021.155650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/06/2021] [Accepted: 07/09/2021] [Indexed: 02/07/2023]
Abstract
IL-6 family cytokines display broad effects in haematopoietic and non-haematopoietic cells that regulate immune homeostasis, host defence, haematopoiesis, development, reproduction and wound healing. Dysregulation of these activities places this cytokine family as important mediators of autoimmunity, chronic inflammation and cancer. In this regard, ectopic lymphoid structures (ELS) are a pathological hallmark of many tissues affected by chronic disease. These inducible lymphoid aggregates form compartmentalised T cell and B cell zones, germinal centres, follicular dendritic cell networks and high endothelial venules, which are defining qualities of peripheral lymphoid organs. Accordingly, ELS can support local antigen-specific responses to self-antigens, alloantigens, pathogens and tumours. ELS often correlate with severe disease progression in autoimmune conditions, while tumour-associated ELS are associated with enhanced anti-tumour immunity and a favourable prognosis in cancer. Here, we discuss emerging roles for IL-6 family cytokines as regulators of ELS development, maintenance and activity and consider how modulation of these activities has the potential to aid the successful treatment of autoimmune conditions and cancers where ELS feature.
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Affiliation(s)
- David G Hill
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Amy Ward
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Lindsay B Nicholson
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Gareth W Jones
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
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49
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Abstract
The association between inflammation, infection, and venous thrombosis has long been recognized; yet, only in the last decades have we begun to understand the mechanisms through which the immune and coagulation systems interact and reciprocally regulate one another. These interconnected networks mount an effective response to injury and pathogen invasion, but if unregulated can result in pathological thrombosis and organ damage. Neutrophils, monocytes, and platelets interact with each other and the endothelium in host defense and also play critical roles in the formation of venous thromboembolism. This knowledge has advanced our understanding of both human physiology and pathophysiology, as well as identified mechanisms of anticoagulant resistance and novel therapeutic targets for the prevention and treatment of thrombosis. In this review, we discuss the contributions of inflammation and infection to venous thromboembolism.
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Affiliation(s)
- Meaghan E. Colling
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Benjamin E. Tourdot
- Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Yogendra Kanthi
- Laboratory of Vascular Thrombosis and Inflammation, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
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50
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Abstract
Adaptive immunity plays central roles in the pathogenesis of rheumatoid arthritis (RA), as it is regarded as an autoimmune disease. Clinical investigations revealed infiltrations of B cells in the synovium, especially those with ectopic lymphoid neogenesis, associate with disease severity. While some B cells in the synovium differentiate into plasma cells producing autoantibodies such as anti-citrullinated protein antibody, others differentiate into effector B cells producing proinflammatory cytokines and expressing RANKL. Synovial B cells might also be important as antigen-presenting cells. Synovial T cells are implicated in the induction of antibody production as well as local inflammation. In the former, a recently identified CD4 T cell subset, peripheral helper T (Tph), which is characterized by the expression of PD-1 and production of CXCL13 and IL-21, is implicated, while the latter might be mediated by Th1-like CD4 T cell subsets that can produce multiple proinflammatory cytokines, including IFN-γ, TNF-α, and GM-CSF, and express cytotoxic molecules, such as perforin, granzymes and granulysin. CD8 T cells in the synovium are able to produce large amount of IFN-γ. However, the involvement of those lymphocytes in the pathogenesis of RA still awaits verification. Their antigen-specificity also needs to be clarified.
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Affiliation(s)
- Hisakata Yamada
- Department of Arthritis and Immunology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
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