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Jeljeli MM, Adamopoulos IE. Innate immune memory in inflammatory arthritis. Nat Rev Rheumatol 2023; 19:627-639. [PMID: 37674048 PMCID: PMC10721491 DOI: 10.1038/s41584-023-01009-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2023] [Indexed: 09/08/2023]
Abstract
The concept of immunological memory was demonstrated in antiquity when protection against re-exposure to pathogens was observed during the plague of Athens. Immunological memory has been linked with the adaptive features of T and B cells; however, in the past decade, evidence has demonstrated that innate immune cells can exhibit memory, a phenomenon called 'innate immune memory' or 'trained immunity'. Innate immune memory is currently being defined and is transforming our understanding of chronic inflammation and autoimmunity. In this Review, we provide an up-to-date overview of the memory-like features of innate immune cells in inflammatory arthritis and the crosstalk between chronic inflammatory milieu and cell reprogramming. Aberrant pro-inflammatory signalling, including cytokines, regulates the metabolic and epigenetic reprogramming of haematopoietic progenitors, leading to exacerbated inflammatory responses and osteoclast differentiation, in turn leading to bone destruction. Moreover, imprinted memory on mature cells including terminally differentiated osteoclasts alters responsiveness to therapies and modifies disease outcomes, commonly manifested by persistent inflammatory flares and relapse following medication withdrawal.
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Affiliation(s)
- Maxime M Jeljeli
- Department of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Iannis E Adamopoulos
- Department of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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2
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Wei Q, Sun L. Monogenic autoinflammatory disease-associated cardiac damage. Inflamm Res 2023; 72:1689-1693. [PMID: 37563333 DOI: 10.1007/s00011-023-01771-7] [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: 09/30/2022] [Revised: 09/30/2022] [Accepted: 07/10/2023] [Indexed: 08/12/2023] Open
Abstract
INTRODUCTION Autoinflammatory diseases (AIDs) constitute several disorders that are characterized by the presence of recurrent episodes of unprovoked inflammation due to dysregulated innate immune system in the absence of autoantibodies or infections. Most of them have a strong genetic background, with mutations in single genes involved in inflammation referred to monogenic AIDs. In this article, we will review the cardiac manifestations in various monogenic AIDs. AREAS COVERED Various cardiac manifestations can be seen in various monogenic AIDs, including pericarditis, valvular diseases, coronary diseases, cardiomyopathies, and pulmonary hypertension, especially in Familial Mediterranean fever (FMF). EXPERT COMMENTARY Monogenic AIDs can manifest a variety of cardiac lesions, the most common of which is pericardial effusion, which may be local pericardial inflammation secondary to systemic inflammatory responses. While, the pathogenesis and incidence are still unclear. More research is still needed to explore the relationship between monogenic AIDs and cardiac damage for better understanding these diseases.
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Affiliation(s)
- Qijiao Wei
- Department of Rheumatology, Children's Hospital of Fudan University, Shanghai, China
| | - Li Sun
- Department of Rheumatology, Children's Hospital of Fudan University, Shanghai, China.
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3
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Sundaresan B, Shirafkan F, Ripperger K, Rattay K. The Role of Viral Infections in the Onset of Autoimmune Diseases. Viruses 2023; 15:v15030782. [PMID: 36992490 PMCID: PMC10051805 DOI: 10.3390/v15030782] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/31/2023] Open
Abstract
Autoimmune diseases (AIDs) are the consequence of a breach in immune tolerance, leading to the inability to sufficiently differentiate between self and non-self. Immune reactions that are targeted towards self-antigens can ultimately lead to the destruction of the host's cells and the development of autoimmune diseases. Although autoimmune disorders are comparatively rare, the worldwide incidence and prevalence is increasing, and they have major adverse implications for mortality and morbidity. Genetic and environmental factors are thought to be the major factors contributing to the development of autoimmunity. Viral infections are one of the environmental triggers that can lead to autoimmunity. Current research suggests that several mechanisms, such as molecular mimicry, epitope spreading, and bystander activation, can cause viral-induced autoimmunity. Here we describe the latest insights into the pathomechanisms of viral-induced autoimmune diseases and discuss recent findings on COVID-19 infections and the development of AIDs.
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Affiliation(s)
- Bhargavi Sundaresan
- Institute of Pharmacology, Biochemical Pharmacological Center, University of Marburg, 35043 Marburg, Germany
| | - Fatemeh Shirafkan
- Institute of Pharmacology, Biochemical Pharmacological Center, University of Marburg, 35043 Marburg, Germany
| | - Kevin Ripperger
- Institute of Pharmacology, Biochemical Pharmacological Center, University of Marburg, 35043 Marburg, Germany
| | - Kristin Rattay
- Institute of Pharmacology, Biochemical Pharmacological Center, University of Marburg, 35043 Marburg, Germany
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4
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Wenzel D, Haddadi N, Afshari K, Richmond JM, Rashighi M. Upcoming treatments for morphea. Immun Inflamm Dis 2021; 9:1101-1145. [PMID: 34272836 PMCID: PMC8589364 DOI: 10.1002/iid3.475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 05/29/2021] [Indexed: 11/25/2022] Open
Abstract
Morphea (localized scleroderma) is a rare autoimmune connective tissue disease with variable clinical presentations, with an annual incidence of 0.4-2.7 cases per 100,000. Morphea occurs most frequently in children aged 2-14 years, and the disease exhibits a female predominance. Insights into morphea pathogenesis are often extrapolated from studies of systemic sclerosis due to their similar skin histopathologic features; however, clinically they are two distinct diseases as evidenced by different demographics, clinical features, disease course and prognosis. An interplay between genetic factors, epigenetic modifications, immune and vascular dysfunction, along with environmental hits are considered as the main contributors to morphea pathogenesis. In this review, we describe potential new therapies for morphea based on both preclinical evidence and ongoing clinical trials. We focus on different classes of therapeutics, including antifibrotic, anti-inflammatory, cellular and gene therapy, and antisenolytic approaches, and how these target different aspects of disease pathogenesis.
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Affiliation(s)
- Dan Wenzel
- Department of DermatologyUniversity of Massachusetts Medical SchoolWorcesterMassachusettsUSA
| | - Nazgol‐Sadat Haddadi
- Department of DermatologyUniversity of Massachusetts Medical SchoolWorcesterMassachusettsUSA
| | - Khashayar Afshari
- Department of DermatologyUniversity of Massachusetts Medical SchoolWorcesterMassachusettsUSA
| | - Jillian M. Richmond
- Department of DermatologyUniversity of Massachusetts Medical SchoolWorcesterMassachusettsUSA
| | - Mehdi Rashighi
- Department of DermatologyUniversity of Massachusetts Medical SchoolWorcesterMassachusettsUSA
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5
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Murphy DM, Mills KHG, Basdeo SA. The Effects of Trained Innate Immunity on T Cell Responses; Clinical Implications and Knowledge Gaps for Future Research. Front Immunol 2021; 12:706583. [PMID: 34489958 PMCID: PMC8417102 DOI: 10.3389/fimmu.2021.706583] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/30/2021] [Indexed: 12/16/2022] Open
Abstract
The burgeoning field of innate immune training, also called trained immunity, has given immunologists new insights into the role of innate responses in protection against infection and in modulating inflammation. Moreover, it has led to a paradigm shift in the way we think about immune memory and the interplay between innate and adaptive immune systems in conferring immunity against pathogens. Trained immunity is the term used to describe the medium-term epigenetic and metabolic reprogramming of innate immune cells in peripheral tissues or in the bone marrow stem cell niche. It is elicited by an initial challenge, followed by a significant period of rest that results in an altered response to a subsequent, unrelated challenge. Trained immunity can be associated with increased production of proinflammatory mediators, such as IL-1β, TNF and IL-6, and increased expression of markers on innate immune cells associated with antigen presentation to T cells. The microenvironment created by trained innate immune cells during the secondary challenge may have profound effects on T cell responses, such as altering the differentiation, polarisation and function of T cell subtypes, including Th17 cells. In addition, the Th1 cytokine IFN-γ plays a critical role in establishing trained immunity. In this review, we discuss the evidence that trained immunity impacts on or can be impacted by T cells. Understanding the interplay between innate immune training and how it effects adaptive immunity will give insights into how this phenomenon may affect the development or progression of disease and how it could be exploited for therapeutic interventions or to enhance vaccine efficacy.
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Affiliation(s)
- Dearbhla M Murphy
- Human and Translational Immunology Group, Department of Clinical Medicine, Trinity Translational Medicine Institute, St James's Hospital, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Kingston H G Mills
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Sharee A Basdeo
- Human and Translational Immunology Group, Department of Clinical Medicine, Trinity Translational Medicine Institute, St James's Hospital, Trinity College Dublin, The University of Dublin, Dublin, Ireland
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6
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Lundberg M, Zhong X, Konrad A, Olsen RA, Råberg L. Balancing selection in Pattern Recognition Receptor signalling pathways is associated with gene function and pleiotropy in a wild rodent. Mol Ecol 2020; 29:1990-2003. [PMID: 32374503 DOI: 10.1111/mec.15459] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 04/20/2020] [Accepted: 04/28/2020] [Indexed: 12/13/2022]
Abstract
Pathogen-mediated balancing selection is commonly considered to play an important role in the maintenance of genetic diversity, in particular in immune genes. However, the factors that may influence which immune genes are the targets of such selection are largely unknown. To address this, here we focus on Pattern Recognition Receptor (PRR) signalling pathways, which play a key role in innate immunity. We used whole-genome resequencing data from a population of bank voles (Myodes glareolus) to test for associations between balancing selection, pleiotropy and gene function in a set of 123 PRR signalling pathway genes. To investigate the effect of gene function, we compared genes encoding (a) receptors for microbial ligands versus downstream signalling proteins, and (b) receptors recognizing components of microbial cell walls, flagella and capsids versus receptors recognizing features of microbial nucleic acids. Analyses based on the nucleotide diversity of full coding sequences showed that balancing selection primarily targeted receptor genes with a low degree of pleiotropy. Moreover, genes encoding receptors recognizing components of microbial cell walls etc. were more important targets of balancing selection than receptors recognizing nucleic acids. Tests for localized signatures of balancing selection in coding and noncoding sequences showed that such signatures were mostly located in introns, and more evenly distributed among different functional categories of PRR pathway genes. The finding that signatures of balancing selection in full coding sequences primarily occur in receptor genes, in particular those encoding receptors for components of microbial cell walls etc., is consistent with the idea that coevolution between hosts and pathogens is an important cause of balancing selection on immune genes.
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Affiliation(s)
- Max Lundberg
- Department of Biology, Lund University, Lund, Sweden
| | - Xiuqin Zhong
- Department of Biology, Lund University, Lund, Sweden
| | - Anna Konrad
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden
| | - Remi-André Olsen
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Solna, Sweden
| | - Lars Råberg
- Department of Biology, Lund University, Lund, Sweden
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7
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Sesti-Costa R, Cervantes-Barragan L, Swiecki MK, Fachi JL, Cella M, Gilfillan S, Silva JS, Colonna M. Leukemia Inhibitory Factor Inhibits Plasmacytoid Dendritic Cell Function and Development. THE JOURNAL OF IMMUNOLOGY 2020; 204:2257-2268. [PMID: 32169845 DOI: 10.4049/jimmunol.1900604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 02/13/2020] [Indexed: 12/11/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) produce abundant type I IFNs (IFN-I) in response to viral nucleic acids. Generation of pDCs from bone marrow dendritic cell (DC) progenitors and their maintenance is driven by the transcription factor E2-2 and inhibited by its repressor Id2. In this study, we find that mouse pDCs selectively express the receptor for LIF that signals through STAT3. Stimulation of pDCs with LIF inhibited IFN-I, TNF, and IL-6 responses to CpG and induced expression of the STAT3 targets SOCS3 and Bcl3, which inhibit IFN-I and NF-κB signaling. Moreover, although STAT3 has been also reported to induce E2-2, LIF paradoxically induced its repressor Id2. A late-stage bone marrow DC progenitor expressed low amounts of LIFR and developed into pDCs less efficiently after being exposed to LIF, consistent with the induction of Id2. Conversely, pDC development and serum IFN-I responses to lymphocytic choriomeningitis virus infection were augmented in newly generated mice lacking LIFR in either CD11c+ or hematopoietic cells. Thus, an LIF-driven STAT3 pathway induces SOCS3, Bcl3, and Id2, which render pDCs and late DC progenitors refractory to physiological stimuli controlling pDC functions and development. This pathway can be potentially exploited to prevent inappropriate secretion of IFN-I in autoimmune diseases or promote IFN-I secretion during viral infections.
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Affiliation(s)
- Renata Sesti-Costa
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil 14049-900
| | - Luisa Cervantes-Barragan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Melissa K Swiecki
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - José Luís Fachi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Marina Cella
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Susan Gilfillan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil 14049-900
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
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8
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Frasca L, Lande R. Toll-like receptors in mediating pathogenesis in systemic sclerosis. Clin Exp Immunol 2020; 201:14-24. [PMID: 32048277 DOI: 10.1111/cei.13426] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2020] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) are evolutionarily conserved receptors essential for the host defence against pathogens. Both immune and non-immune cells can express TLRs, although at different levels. Systemic sclerosis (SSc) is a chronic disease in which autoimmunity, dysregulated profibrotic mediator release and activation of fibroblasts lead to dysregulated collagen deposition and fibrosis. There is now increasing knowledge that the innate immune system and, in particular, TLRs take a part in SSc pathogenesis. The list of endogenous ligands that can stimulate TLRs in SSc is growing: these ligands represent specific danger-associated molecular patterns (DAMPs), involved either in the initiation or the perpetuation of inflammation, and in the release of factors that sustain the fibrotic process or directly stimulate the cells that produce collagen and the endothelial cells. This review reports evidences concerning TLR signalling involvement in SSc. We report the new DAMPs, as well as the TLR-linked pathways involved in disease, with emphasis on type I interferon signature in SSc, the role of plasmacytoid dendritic cells (pDCs) and platelets. The dissection of the contribution of all these pathways to disease, and their correlation with the disease status, as well as their values as prognostic tools, can help to plan timely intervention and design new drugs for more appropriate therapeutic strategies.
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Affiliation(s)
- L Frasca
- National Centre for Drug Research and Evaluation, Pharmacological Research and Experimental Therapy Unit, Istituto Superiore di Sanità, Rome, Italy
| | - R Lande
- National Centre for Drug Research and Evaluation, Pharmacological Research and Experimental Therapy Unit, Istituto Superiore di Sanità, Rome, Italy
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9
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Wang JQ, Liu YR, Xia Q, Chen RN, Liang J, Xia QR, Li J. Emerging Roles for NLRC5 in Immune Diseases. Front Pharmacol 2019; 10:1352. [PMID: 31824312 PMCID: PMC6880621 DOI: 10.3389/fphar.2019.01352] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/25/2019] [Indexed: 12/15/2022] Open
Abstract
Innate immunity activates the corresponding immune response relying on multiple pattern recognition receptors (PRRs) that includes pattern recognition receptors (PRRs), like NOD-like receptors (NLRs), RIG-I-like receptors (RLRs), and C-type lectin receptors (CLRs), which could accurately recognize invasive pathogens. In particular, NLRs belong to a large protein family of pattern recognition receptors in the cytoplasm, where they are highly correlated with activation of inflammatory response system followed by rapid clearance of invasive pathogens. Among the NLRs family, NLRC5, also known as NOD4 or NOD27, accounts for a large proportion and involves in immune responses far and wide. Notably, in the above response case of inflammation, the expression of NLRC5 remarkably increased in immune cells and immune-related tissues. However, the evidence for higher expression of NLRC5 in immune disease still remains controversial. It is noted that the growing evidence further accounts for the participation of NLRC5 in the innate immune response and inflammatory diseases. Moreover, NLRC5 has also been confirmed to exert a critical role in the control of regulatory diverse signaling pathways. Together with its broad participation in the occurrence and development of immune diseases, NLRC5 can be consequently treated as a potential therapeutic target. Nevertheless, the paucity of absolute understanding of intrinsic characteristics and underlying mechanisms of NLRC5 still make it hard to develop targeting drugs. Therefore, current summary about NLRC5 information is indispensable. Herein, current knowledge of NLRC5 is summarized, and research advances in terms of NLRC5 in characteristics, biological function, and regulatory mechanisms are reviewed.
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Affiliation(s)
- Jie-Quan Wang
- Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, China.,Department of Pharmacy, Anhui Mental Health Center, Hefei, China.,Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China.,School of Pharmacy, Anhui Medical University, Ministry of Education, Hefei, China
| | - Ya-Ru Liu
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Quan Xia
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ruo-Nan Chen
- School of Pharmacy, Anhui Medical University, Ministry of Education, Hefei, China.,Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jun Liang
- Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, China.,Department of Pharmacy, Anhui Mental Health Center, Hefei, China.,Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Qing-Rong Xia
- Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, China.,Department of Pharmacy, Anhui Mental Health Center, Hefei, China.,Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Ministry of Education, Hefei, China
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10
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Vampertzi O, Papadopoulou-Legbelou K, Triantafyllou A, Douma S, Papadopoulou-Alataki E. Familial Mediterranean fever and atherosclerosis in childhood and adolescence. Rheumatol Int 2019; 40:1-8. [PMID: 31705200 DOI: 10.1007/s00296-019-04457-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/26/2019] [Indexed: 12/17/2022]
Abstract
Familial Mediterranean fever is a chronic inflammatory disease characterized by periodic and self-limited episodes of fever and aseptic polyserositis. Although colchicine treatment has altered the course of the disease, it is believed that subclinical inflammation is still present, leading to endothelial dysfunction and atherosclerosis in the course of time. In this review, following the published recommendations, we queried online databases such as MEDLINE Pubmed, Scopus, and Web of science for peer-reviewed studies and reviews written in English language, using the following keywords: familial Mediterranean fever, children, endothelial dysfunction, atherosclerosis, cardiovascular disease. The objective of this review is to highlight the correlation between familial Mediterranean fever and atherosclerosis, and moreover to describe new serum inflammatory markers and non-invasive methods of endothelial dysfunction, to detect the atherosclerosis process early starting from childhood.
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Affiliation(s)
- Olga Vampertzi
- 4th Department of Pediatrics, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | | | - Areti Triantafyllou
- 3rd Department of Internal Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stella Douma
- 3rd Department of Internal Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Efimia Papadopoulou-Alataki
- 4th Department of Pediatrics, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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11
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Toll-Like Receptors-2 and -4 in Graves' Disease-Key Players or Bystanders? Int J Mol Sci 2019; 20:ijms20194732. [PMID: 31554206 PMCID: PMC6801632 DOI: 10.3390/ijms20194732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/20/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
Graves’ disease (GD) is an autoimmune disease that affects the thyroid. The development of autoimmunity is associated with innate immune responses where the prominent role plays Toll-like receptors (TLRs). The aim of our study was to assess the relationship between the expression levels of TLR-2 and TLR-4 on CD4+ and CD8+ T as well as CD19+ B lymphocytes in patients with GD and selected clinical parameters. The study group consisted of 32 women with GD, the control group consisted of 20 healthy women. Immunophenotyping was performed using the flow cytometry and cytokines concentrations were assessed using ELISA assay. The mean percentage of CD4+/TLR-2+ and CD8+/TLR-2+ T cells in patients with GD was higher than in the control group (p < 0.0001). After obtaining euthyroidism, the mean percentage of CD4+/TLR-2+ T cells in patients with GD decreased (p < 0.0001). The expression level of TLR-2 on CD4+ T lymphocytes correlated with serum FT3 concentration in patients with GD (r = 0.47, p = 0.007). The mean percentage of CD8+/TLR-2+ T cells in patients with GD before treatment compared to patients with GD after obtaining euthyroidism was higher (p = 0.0163). Similar findings were found for TLR-4. Thus the TLR-2 and TLR-4 can be a prognostic marker for Graves’ disease.
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12
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Atas N, Armagan B, Bodakci E, Satis H, Sari A, Bilge NSY, Salman RB, Yardımcı GK, Babaoglu H, Guler AA, Karadeniz H, Kilic L, Ozturk MA, Goker B, Haznedaroglu S, Kalyoncu U, Kasifoglu T, Tufan A. Familial Mediterranean fever is associated with a wide spectrum of inflammatory disorders: results from a large cohort study. Rheumatol Int 2019; 40:41-48. [PMID: 31392498 DOI: 10.1007/s00296-019-04412-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 07/31/2019] [Indexed: 12/28/2022]
Abstract
Familial Mediterranean fever (FMF) is characterized by recurrent short-lived/self-limiting inflammatory attacks. Besides these, a substantial number of patients with FMF present with a variety of other inflammatory diseases; however, this issue has not been systematically studied previously. Hence, we aimed to investigate the frequency of inflammatory comorbid diseases in a large FMF cohort. All patients were recruited from "FMF in Central Anatolia (FiCA) Cohort", comprising 971 (mean age 35.3 ± 12 years, 61.5% female) adult subjects. All patients fulfilled Tel Hashomer criteria. Demographic data, FMF disease characteristics, MEFV gene mutations, and comorbid inflammatory diseases were meticulously questioned, and laboratory features and genotype data were retrieved from hospital records. There were comorbid inflammatory diseases in 205 (21.1%) patients. The most common inflammatory disease was spondyloarthritis (12.9%). Other remarkable inflammatory disorders were psoriasis, immunoglobulin A vasculitis/Henoch-Schönlein purpura, Behçet's disease and inflammatory bowel diseases. Cryptogenic organizing pneumonia is a newly defined entity in our cohort which is seemed to be associated with FMF (0.3%). Number of patients with persistent inflammation was higher in those with comorbid diseases (p < 0.001). Our results suggest that FMF is commonly associated with other inflammatory diseases. Therefore, clinicians should be cautious about comorbid inflammatory diseases in FMF patients, particularly in those with persistent inflammation. Identification of pathogenic pathways linking FMF to these diseases warrants further investigations.
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Affiliation(s)
- Nuh Atas
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey.
| | - Berkan Armagan
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Erdal Bodakci
- Division of Rheumatology, Department of Internal Medicine, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey
| | - Hasan Satis
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Alper Sari
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Nazife Sule Yasar Bilge
- Division of Rheumatology, Department of Internal Medicine, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey
| | - Reyhan Bilici Salman
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Gozde Kubra Yardımcı
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Hakan Babaoglu
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Aslihan Avanoglu Guler
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Hazan Karadeniz
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Levent Kilic
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Mehmet Akif Ozturk
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Berna Goker
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Seminur Haznedaroglu
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
| | - Umut Kalyoncu
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Timucin Kasifoglu
- Division of Rheumatology, Department of Internal Medicine, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey
| | - Abdurrahman Tufan
- Division of Rheumatology, Department of Internal Medicine, Gazi University Faculty of Medicine, 06100, Ankara, Turkey
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13
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BANK1 interacts with TRAF6 and MyD88 in innate immune signaling in B cells. Cell Mol Immunol 2019; 17:954-965. [PMID: 31243359 PMCID: PMC7608278 DOI: 10.1038/s41423-019-0254-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 05/31/2019] [Indexed: 12/13/2022] Open
Abstract
Evidence supports a possible role of BANK1 in innate immune signaling in B cells. In the present study, we investigated the interaction of BANK1 with two key mediators in interferon and inflammatory cytokine production, TRAF6 and MyD88. We revealed by coimmunoprecipitation (CoIP) analyses the binding of BANK1 with TRAF6 and MyD88, which were mediated by the BANK1 Toll/interleukin-1 receptor (TIR) domain. In addition, the natural BANK1–40C variant showed increased binding to MyD88. Next, we demonstrated in mouse splenic B cells that BANK1 colocalized with Toll-like receptor (TLR) 7 and TLR9 and that after stimulation with TLR7 and TLR9 agonists, the number of double-positive BANK1–TLR7, –TLR9, –TRAF6, and –MyD88 cells increased. Furthermore, we identified five TRAF6-binding motifs (BMs) in BANK1 and confirmed by point mutations and decoy peptide experiments that the C-terminal domain of BANK1-full-length (-FL) and the N-terminal domain of BANK1–Delta2 (-D2) are necessary for this binding. Functionally, we determined that the absence of the TIR domain in BANK1–D2 is important for its lysine (K)63-linked polyubiquitination and its ability to produce interleukin (IL)-8. Overall, our study describes a specific function of BANK1 in MyD88–TRAF6 innate immune signaling in B cells, clarifies functional differences between the two BANK1 isoforms and explains for the first time a functional link between autoimmune phenotypes including SLE and the naturally occurring BANK1–40C variant.
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14
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Wang C, Keliher E, Zeller MWG, Wojtkiewicz GR, Aguirre AD, Buckbinder L, Kim HY, Chen J, Maresca K, Ahmed MS, Motlagh NJ, Nahrendorf M, Chen JW. An activatable PET imaging radioprobe is a dynamic reporter of myeloperoxidase activity in vivo. Proc Natl Acad Sci U S A 2019; 116:11966-11971. [PMID: 31123149 PMCID: PMC6575581 DOI: 10.1073/pnas.1818434116] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Myeloperoxidase (MPO) is a critical proinflammatory enzyme implicated in cardiovascular, neurological, and rheumatological diseases. Emerging therapies targeting inflammation have raised interest in tracking MPO activity in patients. We describe 18F-MAPP, an activatable MPO activity radioprobe for positron emission tomography (PET) imaging. The activated radioprobe binds to proteins and accumulates at sites of MPO activity. The radioprobe 18F-MAPP has a short blood half-life, remains stable in plasma, does not demonstrate cytotoxicity, and crosses the intact blood-brain barrier. The 18F-MAPP imaging detected sites of elevated MPO activity in living mice embedded with human MPO and in mice induced with chemical inflammation or myocardial infarction. The 18F-MAPP PET imaging noninvasively differentiated varying amounts of MPO activity, competitive inhibition, and MPO deficiency in living animals, confirming specificity and showing that the radioprobe can quantify changes in in vivo MPO activity. The radiosynthesis has been optimized and automated, an important step in translation. These data indicate that 18F-MAPP is a promising translational candidate to noninvasively monitor MPO activity and inflammation in patients.
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Affiliation(s)
- Cuihua Wang
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Edmund Keliher
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Matthias W G Zeller
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Gregory R Wojtkiewicz
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Aaron D Aguirre
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
- Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | | | - Hye-Yeong Kim
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Jianqing Chen
- Pfizer World Wide Research and Development, Cambridge, MA 02139
| | - Kevin Maresca
- Pfizer World Wide Research and Development, Cambridge, MA 02139
| | - Maaz S Ahmed
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Negin Jalali Motlagh
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - John W Chen
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114;
- Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114
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15
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Kawano M, Miyoshi M, Miyazaki T. Lactobacillus helveticus SBT2171 Induces A20 Expression via Toll-Like Receptor 2 Signaling and Inhibits the Lipopolysaccharide-Induced Activation of Nuclear Factor-kappa B and Mitogen-Activated Protein Kinases in Peritoneal Macrophages. Front Immunol 2019; 10:845. [PMID: 31057558 PMCID: PMC6478895 DOI: 10.3389/fimmu.2019.00845] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/01/2019] [Indexed: 01/07/2023] Open
Abstract
Lactobacillus helveticus SBT2171 (LH2171) has been reported to ameliorate the development of autoimmune diseases, such as collagen-induced arthritis and experimental autoimmune encephalitis in mice and inhibit interleukin (IL)-6 production in antigen-presenting cells in vitro. Regulation of cytokine production by antigen-presenting cells might be critical for the anti-inflammatory function of LH2171 in autoimmune diseases. However, the mechanism and contributing components of LH2171-mediated inhibition of IL-6 production are unclear. Here, we examined the anti-inflammatory effects of LH2171 in lipopolysaccharide (LPS)-stimulated peritoneal macrophages, as a model of antigen-presenting cells, necessary for the pathogenesis of autoimmune diseases. LH2171 significantly reduced LPS-induced expression and secretion of IL-6 and IL-1β cytokines. It also inhibited activation of nuclear factor-kappa B and mitogen-activated protein kinases (NF-κB/MAPKs). Moreover, LH2171 induced gene expression of several negative regulators of NF-κB/MAPKs. Among these regulators, A20 was strongly up-regulated at the mRNA and protein levels upon LH2171 treatment. The cell wall fraction of LH2171 also demonstrated a similar increase in A20 gene expression and exerted an anti-inflammatory effect. These results suggest that the cell wall may be one of the anti-inflammatory components of LH2171. Since cell wall components of Gram-positive bacteria are recognized by toll-like receptor 2 (TLR2), we investigated whether the anti-inflammatory effect of LH2171 was mediated by TLR2 signaling. Specifically, LH2171-mediated IL-6 suppression and A20 upregulation in wild-type macrophages were reversed and significantly reduced in TLR2 knock-out macrophages. These results suggest that LH2171 induces A20 expression via TLR2 signaling, inhibiting the activation of NF-κB/MAPKs and cytokine production in antigen-presenting cells. This might contribute to the anti-inflammatory activity of LH2171 on autoimmune diseases.
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Affiliation(s)
- Michio Kawano
- Milk Science Research Institute, Megmilk Snow Brand Co. Ltd., Saitama, Japan
| | - Masaya Miyoshi
- Milk Science Research Institute, Megmilk Snow Brand Co. Ltd., Saitama, Japan
| | - Tadaaki Miyazaki
- Department of Probiotics Immunology, Institute for Genetic Medicine, Hokkaido University, Hokkaido, Japan
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16
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Caso F, Costa L, Nucera V, Barilaro G, Masala IF, Talotta R, Caso P, Scarpa R, Sarzi-Puttini P, Atzeni F. From autoinflammation to autoimmunity: old and recent findings. Clin Rheumatol 2018; 37:2305-2321. [PMID: 30014358 DOI: 10.1007/s10067-018-4209-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 12/13/2022]
Abstract
Autoimmune diseases and autoinflammatory diseases have a number of similar etiopathogenetic and clinical characteristics, including genetic predisposition and recurrent systemic inflammatory flares. The first phase of ADs involves innate immunity: by means of TLRs, autoantigen presentation, B and T cell recruitment and autoantibody synthesis. The second phase involves adaptive immunity, a self-sustaining process in which immune complexes containing nucleic acids and autoantibodies activate self-directed inflammation. The link between autoimmunity and autoinflammation is IL-1ß, which is crucial in connecting the innate immune response due to NLR activation and the adaptive immune responses of T and B cells. In conclusion, although ADs are still considered adaptive immunity-mediated disorders, there is increasing evidence that innate immunity and inflammasomes are also involved. The aim of this review is to highlight the link between the innate and adaptive immune mechanisms involved in autoimmune diseases.
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Affiliation(s)
- Francesco Caso
- Rheumatology Unit, Department of Clinical Medicine and Surgery, University Federico II, Via Sergio Pansini, 5, Naples, Italy
| | - Luisa Costa
- Rheumatology Unit, Department of Clinical Medicine and Surgery, University Federico II, Via Sergio Pansini, 5, Naples, Italy
| | - Valeria Nucera
- Rheumatology Unit, University of Messina, Messina, Italy
| | - Giuseppe Barilaro
- Department of Internal Medicine, IRCCS San Raffaele Pisana, Rome, Italy
| | | | - Rossella Talotta
- Rheumatology Unit, ASST Fatebenefratelli Sacco Buzzi, Milan, Italy
| | - Paolo Caso
- Geriatric Unit, Faculty of Medicine and Psychology, S. Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Raffaele Scarpa
- Rheumatology Unit, Department of Clinical Medicine and Surgery, University Federico II, Via Sergio Pansini, 5, Naples, Italy.
| | | | - Fabiola Atzeni
- Rheumatology Unit, University of Messina, Messina, Italy
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17
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Novel insights into the role of inflammasomes in autoimmune and metabolic rheumatic diseases. Rheumatol Int 2018; 38:1345-1354. [DOI: 10.1007/s00296-018-4074-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 05/29/2018] [Indexed: 12/12/2022]
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18
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Arts RJW, Joosten LAB, Netea MG. The Potential Role of Trained Immunity in Autoimmune and Autoinflammatory Disorders. Front Immunol 2018. [PMID: 29515591 PMCID: PMC5826224 DOI: 10.3389/fimmu.2018.00298] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
During induction of trained immunity, monocytes and macrophages undergo a functional and transcriptional reprogramming toward increased activation. Important rewiring of cellular metabolism of the myeloid cells takes place during induction of trained immunity, including a shift toward glycolysis induced through the mTOR pathway, as well as glutaminolysis and cholesterol synthesis. Subsequently, this leads to modulation of the function of epigenetic enzymes, resulting in important changes in chromatin architecture that enables increased gene transcription. However, in addition to the beneficial effects of trained immunity as a host defense mechanism, we hypothesize that trained immunity also plays a deleterious role in the induction and/or maintenance of autoimmune and autoinflammatory diseases if inappropriately activated.
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Affiliation(s)
- Rob J W Arts
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands
| | - Leo A B Joosten
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.,Department of Medical Genetics, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihai G Netea
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.,Department for Genomics and Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
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19
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Pollard KM, Escalante GM, Huang H, Haraldsson KM, Hultman P, Christy JM, Pawar RD, Mayeux JM, Gonzalez-Quintial R, Baccala R, Beutler B, Theofilopoulos AN, Kono DH. Induction of Systemic Autoimmunity by a Xenobiotic Requires Endosomal TLR Trafficking and Signaling from the Late Endosome and Endolysosome but Not Type I IFN. THE JOURNAL OF IMMUNOLOGY 2017; 199:3739-3747. [PMID: 29055005 DOI: 10.4049/jimmunol.1700332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 09/25/2017] [Indexed: 12/17/2022]
Abstract
Type I IFN and nucleic acid-sensing TLRs are both strongly implicated in the pathogenesis of lupus, with most patients expressing IFN-induced genes in peripheral blood cells and with TLRs promoting type I IFNs and autoreactive B cells. About a third of systemic lupus erythematosus patients, however, lack the IFN signature, suggesting the possibility of type I IFN-independent mechanisms. In this study, we examined the role of type I IFN and TLR trafficking and signaling in xenobiotic systemic mercury-induced autoimmunity (HgIA). Strikingly, autoantibody production in HgIA was not dependent on the type I IFN receptor even in NZB mice that require type I IFN signaling for spontaneous disease, but was dependent on the endosomal TLR transporter UNC93B1 and the endosomal proton transporter, solute carrier family 15, member 4. HgIA also required the adaptor protein-3 complex, which transports TLRs from the early endosome to the late endolysosomal compartments. Examination of TLR signaling pathways implicated the canonical NF-κB pathway and the proinflammatory cytokine IL-6 in autoantibody production, but not IFN regulatory factor 7. These findings identify HgIA as a novel type I IFN-independent model of systemic autoimmunity and implicate TLR-mediated NF-κB proinflammatory signaling from the late endocytic pathway compartments in autoantibody generation.
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Affiliation(s)
- K Michael Pollard
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037;
| | - Gabriela M Escalante
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037
| | - Hua Huang
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Katarina M Haraldsson
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Per Hultman
- Department of Experimental and Clinical Medicine, Linköping University, Linköping 58183, Sweden; and
| | - Joseph M Christy
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037
| | - Rahul D Pawar
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037
| | - Jessica M Mayeux
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037
| | | | - Roberto Baccala
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
| | - Bruce Beutler
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | - Dwight H Kono
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037
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20
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Association Between Major Histocompatibility Complex Class I Chain-Related Gene Polymorphisms and Susceptibility of Systemic Lupus Erythematosus. Am J Med Sci 2017; 354:430-435. [DOI: 10.1016/j.amjms.2017.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/04/2017] [Accepted: 06/10/2017] [Indexed: 01/06/2023]
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21
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Beil M, Sviri S, de la Guardia V, Stav I, Ben-Chetrit E, van Heerden PV. Prognosis of patients with rheumatic diseases admitted to intensive care. Anaesth Intensive Care 2017; 45:67-72. [PMID: 28072937 DOI: 10.1177/0310057x1704500110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Variable mortality rates have been reported for patients with rheumatic diseases admitted to an intensive care unit (ICU). Due to the absence of appropriate control groups in previous studies, it is not known whether the presence of a rheumatic disease constitutes a risk factor. Moreover, the accuracy of the Acute Physiology and Chronic Health Evaluation II (APACHE II) score for predicting outcome in this group of patients has been questioned. The primary goal of this study was to compare outcome of patients with rheumatic diseases admitted to a medical ICU to those of controls. The records of all patients admitted between 1 April 2003 and 30 June 2014 (n=4020) were screened for the presence of a rheumatic disease during admission (n=138). The diagnosis of a rheumatic disease was by standard criteria for these conditions. An age- and gender-matched control group of patients without a rheumatic disease was extracted from the patient population in the database during the same period (n=831). Mortality in ICU, in hospital and after 180 days did not differ significantly between patients with and without rheumatic diseases. There was no difference in the performance of the APACHE II score for predicting outcome in patients with rheumatic diseases and controls. This score, as well as a requirement for the use of inotropes or vasopressors, accurately predicted hospital mortality in the group of patients with rheumatic diseases. In conclusion, patients with a rheumatic condition admitted to intensive care do not do significantly worse than patients without such a disease.
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Affiliation(s)
- M Beil
- Visiting Professor, Medical Intensive Care Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel, University of Ulm, Germany
| | - S Sviri
- Director, Medical Intensive Care Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel
| | - V de la Guardia
- Fellow, Medical Intensive Care Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel
| | - I Stav
- Data Analyst, Medical Intensive Care Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel
| | - E Ben-Chetrit
- Professor, Rheumatology Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel
| | - P V van Heerden
- Professor of Anesthesiology, General Intensive Care Unit, Hadassah University Hospital, En Kerem, Jerusalem, Israel
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22
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Moulton VR, Suarez-Fueyo A, Meidan E, Li H, Mizui M, Tsokos GC. Pathogenesis of Human Systemic Lupus Erythematosus: A Cellular Perspective. Trends Mol Med 2017. [PMID: 28623084 DOI: 10.1016/j.molmed.2017.05.006] [Citation(s) in RCA: 276] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease affecting multiple organs. A complex interaction of genetics, environment, and hormones leads to immune dysregulation and breakdown of tolerance to self-antigens, resulting in autoantibody production, inflammation, and destruction of end-organs. Emerging evidence on the role of these factors has increased our knowledge of this complex disease, guiding therapeutic strategies and identifying putative biomarkers. Recent findings include the characterization of genetic/epigenetic factors linked to SLE, as well as cellular effectors. Novel observations have provided an improved understanding of the contribution of tissue-specific factors and associated damage, T and B lymphocytes, as well as innate immune cell subsets and their corresponding abnormalities. The intricate web of involved factors and pathways dictates the adoption of tailored therapeutic approaches to conquer this disease.
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Affiliation(s)
- Vaishali R Moulton
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.
| | - Abel Suarez-Fueyo
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Esra Meidan
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA; Department of Rheumatology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Hao Li
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Masayuki Mizui
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - George C Tsokos
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.
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23
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Takagi M, Takakubo Y, Pajarinen J, Naganuma Y, Oki H, Maruyama M, Goodman SB. Danger of frustrated sensors: Role of Toll-like receptors and NOD-like receptors in aseptic and septic inflammations around total hip replacements. J Orthop Translat 2017; 10:68-85. [PMID: 29130033 PMCID: PMC5676564 DOI: 10.1016/j.jot.2017.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The innate immune sensors, Toll-like receptors (TLRs) and nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs), can recognize not only exogenous pathogen-associated molecular patterns (PAMPs), but also endogenous molecules created upon tissue injury, sterile inflammation, and degeneration. Endogenous ligands are called damage-associated molecular patterns (DAMPs), and include endogenous molecules released from activated and necrotic cells as well as damaged extracellular matrix. TLRs and NLRs can interact with various ligands derived from PAMPs and DAMPs, leading to activation and/or modulation of intracellular signalling pathways. Intensive research on the innate immune sensors, TLRs and NLRs, has brought new insights into the pathogenesis of not only various infectious and rheumatic diseases, but also aseptic foreign body granuloma and septic inflammation of failed total hip replacements (THRs). In this review, recent knowledge is summarized on the innate immune system, including TLRs and NLRs and their danger signals, with special reference to their possible role in the adverse local host response to THRs. Translational potential of this article: A clear understanding of the roles of Toll-like receptors and NOD-like receptors in aseptic and septic loosening of joint replacements will facilitate potential strategies to mitigate these events, thereby extending the longevity of implants in humans.
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Affiliation(s)
- Michiaki Takagi
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata City, Yamagata, Japan
| | - Yuya Takakubo
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata City, Yamagata, Japan
| | - Jukka Pajarinen
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Yasushi Naganuma
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata City, Yamagata, Japan
| | - Hiroharu Oki
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata City, Yamagata, Japan
| | - Masahiro Maruyama
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata City, Yamagata, Japan.,Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Stuart B Goodman
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
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24
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Hsieh CW, Chen YM, Lin CC, Tang KT, Chen HH, Hung WT, Lai KL, Chen DY. Elevated Expression of the NLRP3 Inflammasome and Its Correlation with Disease Activity in Adult-onset Still Disease. J Rheumatol 2017; 44:1142-1150. [PMID: 28507179 DOI: 10.3899/jrheum.161354] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/07/2017] [Indexed: 01/02/2023]
Abstract
OBJECTIVE The dysregulation of the NLRP3 (NLR containing a pyrin domain) inflammasome is involved in autoinflammatory diseases. Adult-onset Still disease (AOSD) is regarded as an autoinflammatory disease. However, the pathogenic involvement of NLRP3 inflammasome in AOSD remains unclear and NLRP3 activators in AOSD are currently unknown. METHODS The mRNA expression of NLRP3 inflammasome signaling in peripheral blood mononuclear cells (PBMC) from 34 patients with AOSD and 14 healthy subjects was determined using quantitative-PCR (qPCR). The changes in mRNA and protein levels of NLRP3 inflammasome signaling in PBMC treated with the potential activator [imiquimod (IMQ)] or inhibitor of NLRP3 were evaluated using qPCR and immunoblotting, respectively. The supernatant levels of interleukin (IL)-1β and IL-18 were determined by ELISA. RESULTS Significantly higher mRNA levels of NLRP3 inflammasome signaling were observed in patients with AOSD compared with healthy controls. NLRP3 expressions were positively correlated with disease activity in patients with AOSD. IMQ (an effective Toll-like receptor 7 ligand; 10 µg/ml and 25 µg/ml) stimulation of PBMC from patients with AOSD induced dose-dependent increases of mRNA expression of NLRP3 (mean ± standard error of the mean, 2.06 ± 0.46 and 6.05 ± 1.84, respectively), caspase-1 (1.81 ± 0.23 and 4.25 ± 0.48), IL-1β (5.68 ± 1.51 and 12.13 ± 3.71), and IL-18 (2.32 ± 0.37 and 4.81 ± 0.51) compared with controls (all p < 0.005). IMQ stimulation of PBMC from patients similarly induced greater increases in protein expressions of NLRP3 inflammasome compared with controls. The protein expressions of NLRP3, IL-1β, and IL-18 on PBMC significantly decreased after treatment with NLRP3 inhibitor in patients with AOSD. CONCLUSION Increased expression of NLRP3 inflammasome and its positive correlation with disease activity in AOSD suggest its involvement in disease pathogenesis. IMQ upregulated expressions of NLRP3 inflammasome signaling, and IMQ might be an activator of NLRP3 inflammasome in AOSD.
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Affiliation(s)
- Chia-Wei Hsieh
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Yi-Ming Chen
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Chi-Chen Lin
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Kuo-Tung Tang
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Hsin-Hua Chen
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Wei-Ting Hung
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Kuo-Lung Lai
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan.,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work
| | - Der-Yuan Chen
- From the Division of Allergy, Immunology and Rheumatology, and the Department of Medical Education and Research, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung; Faculty of Medicine, National Yang Ming University, Taipei, Taiwan. .,C.W. Hsieh, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; Y.M. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University; C.C. Lin, PhD, PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; K.T. Tang, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and PhD Program in Translational Medicine, National Chung Hsing University; H.H. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University; W.T. Hung, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital; K.L. Lai, MD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University; D.Y. Chen, MD, PhD, Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, and Department of Medical Education and Research, Taichung Veterans General Hospital, and Faculty of Medicine, National Yang Ming University, and PhD Program in Translational Medicine, National Chung Hsing University, and Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University. Dr. Y.M. Chen and C.C. Lin contributed equally to this work.
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25
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Stanton MG, Murphy-Benenato KE. Messenger RNA as a Novel Therapeutic Approach. TOPICS IN MEDICINAL CHEMISTRY 2017. [DOI: 10.1007/7355_2016_30] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Doedens JR, Jones WD, Hill K, Mason MJ, Gersuk VH, Mease PJ, Dall'Era M, Aranow C, Martin RW, Cohen SB, Fleischmann RM, Kivitz AJ, Burge DJ, Chaussabel D, Elkon KB, Posada JA. Blood-Borne RNA Correlates with Disease Activity and IFN-Stimulated Gene Expression in Systemic Lupus Erythematosus. THE JOURNAL OF IMMUNOLOGY 2016; 197:2854-63. [PMID: 27534558 DOI: 10.4049/jimmunol.1601142] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/26/2016] [Indexed: 12/27/2022]
Abstract
The loss of tolerance and the presence of circulating autoantibodies directed against nuclear Ags is the hallmark of systemic lupus erythematosus (SLE). Many of these Ags are complexed with short, noncoding RNAs, such as U1 and Y1. The amount of U1 and Y1 RNA complexed with SLE patient Abs and immune complexes was measured in a cross-section of 228 SLE patients to evaluate the role of these RNA molecules within the known biochemical framework of SLE. The study revealed that SLE patients had significantly elevated levels of circulating U1 and/or Y1 RNA compared with healthy volunteers. In addition, the blood-borne RNA molecules were correlated with SLE disease activity and increased expression of IFN-inducible genes. To our knowledge, this study provides the first systematic examination of the role of circulating RNA in a large group of SLE patients and provides an important link with IFN dysregulation.
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Affiliation(s)
| | | | - Kay Hill
- PlasmaLab International, Everett, WA 98201
| | | | | | - Philip J Mease
- Swedish Medical Center and University of Washington, Seattle, WA 98122
| | - Maria Dall'Era
- University of California, San Francisco, San Francisco, CA 94143
| | - Cynthia Aranow
- The Feinstein Institute for Medical Research, Manhasset, NY 11030
| | - Richard W Martin
- College of Human Medicine, Michigan State University, East Lansing, MI 48824
| | | | | | - Alan J Kivitz
- Altoona Center for Clinical Research, Duncansville, PA 16635
| | | | - Damien Chaussabel
- Benaroya Research Institute, Seattle, WA 98101; Sidra Medical and Research Center, Doha, Qatar; and
| | - Keith B Elkon
- Department of Rheumatology, University of Washington, Seattle, WA 98109
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Yang Z, Cao J, Yu C, Yang Q, Zhang Y, Han L. Caspase-1 mediated interleukin-18 activation in neutrophils promotes the activity of rheumatoid arthritis in a NLRP3 inflammasome independent manner. Joint Bone Spine 2016; 83:282-9. [DOI: 10.1016/j.jbspin.2015.07.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 07/16/2015] [Indexed: 12/31/2022]
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Anaya JM, Ramirez-Santana C, Alzate MA, Molano-Gonzalez N, Rojas-Villarraga A. The Autoimmune Ecology. Front Immunol 2016; 7:139. [PMID: 27199979 PMCID: PMC4844615 DOI: 10.3389/fimmu.2016.00139] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/29/2016] [Indexed: 12/21/2022] Open
Abstract
Autoimmune diseases (ADs) represent a heterogeneous group of disorders that affect specific target organs or multiple organ systems. These conditions share common immunopathogenic mechanisms (i.e., the autoimmune tautology), which explain the clinical similarities they have among them as well as their familial clustering (i.e., coaggregation). As part of the autoimmune tautology, the influence of environmental exposure on the risk of developing ADs is paramount (i.e., the autoimmune ecology). In fact, environment, more than genetics, shapes immune system. Autoimmune ecology is akin to exposome, that is all the exposures - internal and external - across the lifespan, interacting with hereditary factors (both genetics and epigenetics) to favor or protect against autoimmunity and its outcomes. Herein, we provide an overview of the autoimmune ecology, focusing on the immune response to environmental agents in general, and microbiota, cigarette smoking, alcohol and coffee consumption, socioeconomic status (SES), gender and sex hormones, vitamin D, organic solvents, and vaccines in particular. Inclusion of the autoimmune ecology in disease etiology and health will improve the way personalized medicine is currently conceived and applied.
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Affiliation(s)
- Juan-Manuel Anaya
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , Colombia
| | - Carolina Ramirez-Santana
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , Colombia
| | - Maria A Alzate
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , Colombia
| | - Nicolas Molano-Gonzalez
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , Colombia
| | - Adriana Rojas-Villarraga
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , Colombia
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Pacheco GV, Novelo Noh IB, Velasco Cárdenas RMH, Angulo Ramírez AV, López Villanueva RF, Quintal Ortiz IG, Alonso Salomón LG, Ruz NP, Rivero Cárdenas NA. Expression of TLR-7, MyD88, NF-kB, and INF-α in B Lymphocytes of Mayan Women with Systemic Lupus Erythematosus in Mexico. Front Immunol 2016; 7:22. [PMID: 26870038 PMCID: PMC4735402 DOI: 10.3389/fimmu.2016.00022] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/15/2016] [Indexed: 01/06/2023] Open
Abstract
Background Systemic lupus erythematosus (SLE) is a chronic inflammatory autoimmune disease involving multiple organs. It is currently accepted that several genetic, environmental, and hormonal factors are contributing to its development. Innate immunity may have a great influence in autoimmunity through Toll-like receptors. TLR-7 recognizing single-strand RNA has been involved in SLE. Its activation induces intracellular signal with attraction of MyD88 and NF-kBp65, leading to IFN-α synthesis which correlate with disease activity. Objective To assess the expression of TLR-7, MyD88, and NF-kBp65 in B lymphocytes of Mayan women with SLE. Methods One hundred patients with SLE and 100 healthy controls, all of them Mayan women, were included. TLR-7 was analyzed on B and T lymphocytes, and MyD88 and NF-kB only in B lymphocytes. Serum INF-α level was evaluated by ELISA. Results Significant expression (p < 0.0001) of TLR-7 in B and T lymphocytes and serum IFN-α increased (p = 0.034) was observed in patients. MyD88 and NF-kBp65 were also increased in B lymphocytes of patients. TLR-7 and NF-kBp65 expression correlated, but no correlation with INF-α and disease activity was detected. Conclusion Data support the role of TLR-7 and signal proteins in the pathogenesis of SLE in the Mayan population of Yucatán.
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Affiliation(s)
- Guillermo Valencia Pacheco
- Laboratorio de Hematología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán , Mérida , Mexico
| | | | | | | | | | - Irma G Quintal Ortiz
- Laboratorio de Hematología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán , Mérida , Mexico
| | - Ligia G Alonso Salomón
- Laboratorio de Hematología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán , Mérida , Mexico
| | - Norma Pavía Ruz
- Laboratorio de Hematología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán , Mérida , Mexico
| | - Nubia A Rivero Cárdenas
- Laboratorio de Hematología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán , Mérida , Mexico
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McDonald G, Cabal N, Vannier A, Umiker B, Yin RH, Orjalo AV, Johansson HE, Han JH, Imanishi-Kari T. Female Bias in Systemic Lupus Erythematosus is Associated with the Differential Expression of X-Linked Toll-Like Receptor 8. Front Immunol 2015; 6:457. [PMID: 26441962 PMCID: PMC4561825 DOI: 10.3389/fimmu.2015.00457] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 08/24/2015] [Indexed: 11/28/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by the production of anti-nuclear antibodies. SLE is one of many autoimmune disorders that have a strong gender bias, with 70–90% of SLE patients being female. Several explanations have been postulated to account for the severity of autoimmune diseases in females, including hormonal, microbiota, and gene dosage differences. X-linked toll-like receptors (TLRs) have recently been implicated in disease progression in females. Our previous studies using the 564Igi mouse model of SLE on a Tlr7 and Tlr9 double knockout background showed that the presence of Tlr8 on both X chromosomes was required for the production of IgG autoantibodies, Ifn-I expression and granulopoiesis in females. Here, we show the results of our investigation into the role of Tlr8 expression in SLE pathogenesis in 564Igi females. Female mice have an increase in serum pathogenic anti-RNA IgG2a and IgG2b autoantibodies. 564Igi mice have also been shown to have an increase in neutrophils in vivo, which are major contributors to Ifn-α expression. Here, we show that neutrophils from C57BL/6 mice express Ifn-α in response to 564 immune complexes and TLR8 activation. Bone marrow-derived macrophages from 564Igi females have a significant increase in Tlr8 expression compared to male-derived cells, and RNA fluorescence in situ hybridization data suggest that Tlr8 may escape X-inactivation in female-derived macrophages. These results propose a model by which females may be more susceptible to SLE pathogenesis due to inefficient inactivation of Tlr8.
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Affiliation(s)
- Gabrielle McDonald
- Department of Integrative Physiology and Pathobiology, Tufts University , Boston, MA , USA
| | - Nicholas Cabal
- Department of Integrative Physiology and Pathobiology, Tufts University , Boston, MA , USA
| | - Augustin Vannier
- Department of Integrative Physiology and Pathobiology, Tufts University , Boston, MA , USA
| | - Benjamin Umiker
- Department of Integrative Physiology and Pathobiology, Tufts University , Boston, MA , USA
| | | | | | | | - Jin-Hwan Han
- Merck Research Laboratories , Palo Alto, CA , USA
| | - Thereza Imanishi-Kari
- Department of Integrative Physiology and Pathobiology, Tufts University , Boston, MA , USA
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O'Gorman WE, Hsieh EWY, Savig ES, Gherardini PF, Hernandez JD, Hansmann L, Balboni IM, Utz PJ, Bendall SC, Fantl WJ, Lewis DB, Nolan GP, Davis MM. Single-cell systems-level analysis of human Toll-like receptor activation defines a chemokine signature in patients with systemic lupus erythematosus. J Allergy Clin Immunol 2015; 136:1326-36. [PMID: 26037552 DOI: 10.1016/j.jaci.2015.04.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/20/2015] [Accepted: 04/01/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND Activation of Toll-like receptors (TLRs) induces inflammatory responses involved in immunity to pathogens and autoimmune pathogenesis, such as in patients with systemic lupus erythematosus (SLE). Although TLRs are differentially expressed across the immune system, a comprehensive analysis of how multiple immune cell subsets respond in a system-wide manner has not been described. OBJECTIVE We sought to characterize TLR activation across multiple immune cell subsets and subjects, with the goal of establishing a reference framework against which to compare pathologic processes. METHODS Peripheral whole-blood samples were stimulated with TLR ligands and analyzed by means of mass cytometry simultaneously for surface marker expression, activation states of intracellular signaling proteins, and cytokine production. We developed a novel data visualization tool to provide an integrated view of TLR signaling networks with single-cell resolution. We studied 17 healthy volunteer donors and 8 patients with newly diagnosed and untreated SLE. RESULTS Our data revealed the diversity of TLR-induced responses within cell types, with TLR ligand specificity. Subsets of natural killer cells and T cells selectively induced nuclear factor κ light chain enhancer of activated B cells in response to TLR2 ligands. CD14(hi) monocytes exhibited the most polyfunctional cytokine expression patterns, with more than 80 distinct cytokine combinations. Monocytic TLR-induced cytokine patterns were shared among a group of healthy donors, with minimal intraindividual and interindividual variability. Furthermore, autoimmune disease altered baseline cytokine production; newly diagnosed untreated SLE patients shared a distinct monocytic chemokine signature, despite clinical heterogeneity. CONCLUSION Mass cytometry defined a systems-level reference framework for human TLR activation, which can be applied to study perturbations in patients with inflammatory diseases, such as SLE.
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Affiliation(s)
- William E O'Gorman
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif
| | - Elena W Y Hsieh
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif; Department of Pediatrics, Division of Allergy, Immunology and Rheumatology, Stanford University, Stanford, Calif
| | - Erica S Savig
- Cancer Biology Program, Stanford University, Stanford, Calif
| | | | - Joseph D Hernandez
- Department of Pediatrics, Division of Allergy, Immunology and Rheumatology, Stanford University, Stanford, Calif; Department of Pathology, Stanford University, Stanford, Calif
| | - Leo Hansmann
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif
| | - Imelda M Balboni
- Department of Pediatrics, Division of Allergy, Immunology and Rheumatology, Stanford University, Stanford, Calif
| | - Paul J Utz
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University, Stanford, Calif; Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, Calif
| | - Sean C Bendall
- Department of Pathology, Stanford University, Stanford, Calif
| | - Wendy J Fantl
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif; Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Stanford University, Stanford, Calif
| | - David B Lewis
- Department of Pediatrics, Division of Allergy, Immunology and Rheumatology, Stanford University, Stanford, Calif
| | - Garry P Nolan
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif; Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, Calif.
| | - Mark M Davis
- Department of Microbiology and Immunology, Stanford University, Stanford, Calif; Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, Calif; Howard Hughes Medical Institute, Stanford University, Stanford, Calif.
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Iwai A, Naniwa T, Tamechika S, Maeda S. Short-term add-on tocilizumab and intravenous cyclophosphamide exhibited a remission-inducing effect in a patient with systemic lupus erythematosus with refractory multiorgan involvements including massive pericarditis and glomerulonephritis. Mod Rheumatol 2014; 27:529-532. [PMID: 25437197 DOI: 10.3109/14397595.2014.990409] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report on a 41-year-old woman with refractory systemic lupus erythematosus with massive pericarditis, macrophage activation syndrome, and glomerulonephritis despite high-dose glucocorticoids and tacrolimus. Tocilizumab dramatically improved pericarditis, and glomerulonephritis was controlled after adding cyclophosphamide. We had to halt tocilizumab and cyclophosphamide due to possible pneumocystis infection after five and three infusions of tocilizumab and intravenous cyclophosphamide, respectively. Nevertheless, no lupus flare had been observed on glucocorticoid monotherapy and enabled further rapid tapering prednisolone.
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Affiliation(s)
- Atsuko Iwai
- a Division of Respiratory Medicine, Allergy and Rheumatology, Nagoya City University Hospital , Nagoya, Aichi , Japan.,c Department of Geriatric and Environmental Dermatology , Nagoya City University Graduate School of Medical Sciences , Nagoya, Aichi , Japan
| | - Taio Naniwa
- a Division of Respiratory Medicine, Allergy and Rheumatology, Nagoya City University Hospital , Nagoya, Aichi , Japan.,b Department of Respiratory Medicine , Allergy and Clinical Immunology , Nagoya, Aichi , Japan
| | - Shinya Tamechika
- a Division of Respiratory Medicine, Allergy and Rheumatology, Nagoya City University Hospital , Nagoya, Aichi , Japan.,b Department of Respiratory Medicine , Allergy and Clinical Immunology , Nagoya, Aichi , Japan
| | - Shinji Maeda
- a Division of Respiratory Medicine, Allergy and Rheumatology, Nagoya City University Hospital , Nagoya, Aichi , Japan.,b Department of Respiratory Medicine , Allergy and Clinical Immunology , Nagoya, Aichi , Japan
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Rowland SL, Riggs JM, Gilfillan S, Bugatti M, Vermi W, Kolbeck R, Unanue ER, Sanjuan MA, Colonna M. Early, transient depletion of plasmacytoid dendritic cells ameliorates autoimmunity in a lupus model. J Exp Med 2014; 211:1977-91. [PMID: 25180065 PMCID: PMC4172228 DOI: 10.1084/jem.20132620] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 07/25/2014] [Indexed: 01/30/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) have long been implicated in the pathogenesis of lupus. However, this conclusion has been largely based on a correlative link between the copious production of IFN-α/β by pDCs and the IFN-α/β "signature" often seen in human lupus patients. The specific contribution of pDCs to disease in vivo has not been investigated in detail. For this reason, we generated a strain of BXSB lupus-prone mice in which pDCs can be selectively depleted in vivo. Early, transient ablation of pDCs before disease initiation resulted in reduced splenomegaly and lymphadenopathy, impaired expansion and activation of T and B cells, reduced antibodies against nuclear autoantigens and improved kidney pathology. Amelioration of pathology coincided with decreased transcription of IFN-α/β-induced genes in tissues. PDC depletion had an immediate impact on the activation of immune cells, and importantly, the beneficial effects on pathology were sustained even though pDCs later recovered, indicating an early pDC contribution to disease. Together, our findings demonstrate a critical function for pDCs during the IFN-α/β-dependent initiation of autoimmune lupus and point to pDCs as an attractive therapeutic target for the treatment of SLE.
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Affiliation(s)
- Sarah L Rowland
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Jeffrey M Riggs
- Respiratory, Inflammation and Autoimmunity Research Department, MedImmune, Gaithersburg, MD 20878
| | - Susan Gilfillan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Mattia Bugatti
- Department of Pathology, University of Brescia, 25123 Brescia, Italy
| | - William Vermi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110 Department of Pathology, University of Brescia, 25123 Brescia, Italy
| | - Roland Kolbeck
- Respiratory, Inflammation and Autoimmunity Research Department, MedImmune, Gaithersburg, MD 20878
| | - Emil R Unanue
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Miguel A Sanjuan
- Respiratory, Inflammation and Autoimmunity Research Department, MedImmune, Gaithersburg, MD 20878
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
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Babazada H, Yamashita F, Hashida M. Suppression of experimental arthritis with self-assembling glycol-split heparin nanoparticles via inhibition of TLR4-NF-κB signaling. J Control Release 2014; 194:295-300. [PMID: 25242730 DOI: 10.1016/j.jconrel.2014.09.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/20/2014] [Accepted: 09/11/2014] [Indexed: 12/20/2022]
Abstract
It has been recently shown that Toll-like receptor4 mediated nuclear factor κB (TLR4-NF-κB) signaling plays a critical role in the pathogenesis of rheumatoid arthritis mediated by pro-inflammatory cytokines in arthritic synovium. Here we evaluate the therapeutic potential of glycol-split non-anticoagulant heparin/d-erythro-sphingosine nanoparticles (NAHNPs), which have shown strong inhibitory effect against TLR4 induced inflammation, in an experimental arthritis model. NAHNP significantly inhibited the production of pro-inflammatory cytokines such as TNF-α, IL-6 and IL-1β in lipopolysaccharide (LPS)-induced primary mouse macrophages and DC2.4 dendritic cell line. The nanoparticles were administered to type II collagen-induced arthritis (CIA) mice by intraarticular injections once per day starting from onset of the disease symptoms. Treatment with NAHNP had a potent suppressive effect in CIA mice, observed with a decrease in arthritis score and footpad swelling. The animals treated with NAHNP significantly reduced levels of IgG1 and IgG2a antibodies against bovine type II collagen. Levels of proinflammatory cytokines--e.g., TNF-α, IL-6 and IL-1β in knee joints and sera were significantly inhibited compared to control mice. Moreover, nuclear localization of RelA in knee joints was significantly inhibited in NAHNP treatment, indicating down-regulation of the NF-κB signaling pathway. In addition, histological examination revealed significant suppression of inflammatory cell infiltration, joint destruction and synovial proliferation in synovium compared with control mice. These results suggest that selective inhibition of TLR4-NF-κB signaling with lipid modified heparin derivatives composited to nanostructures provides an effective therapeutic approach to inhibit chronic inflammation in an animal model of rheumatoid arthritis.
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Affiliation(s)
- Hasan Babazada
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Fumiyoshi Yamashita
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuru Hashida
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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Babazada H, Yamashita F, Yanamoto S, Hashida M. Self-assembling lipid modified glycol-split heparin nanoparticles suppress lipopolysaccharide-induced inflammation through TLR4-NF-κB signaling. J Control Release 2014; 194:332-40. [PMID: 25234820 DOI: 10.1016/j.jconrel.2014.09.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 08/15/2014] [Accepted: 09/08/2014] [Indexed: 01/23/2023]
Abstract
Self-assembling heparin nanoparticles have attracted much attention as promising drug carriers for various drugs, genes and imaging agents. In the present investigation, we found that heparin nanoparticles are selective Toll-like receptor 4 (TLR-4) antagonists and have a much greater anti-inflammatory effect than native heparin. More specifically, we developed self-assembling nanoparticles composed of glycol-split heparin/D-erythro-sphingosine conjugates (NAHNP), characterized their physicochemical properties and anti-inflammatory effect in vitro. Unlike native heparin, NAHNP significantly inhibited lipopolysaccharide-induced activation of MyD88-dependent NF-κB signaling pathway and production of pro-inflammatory cytokines such as TNF-alpha from mouse macrophages with IC50 = 0.019 mg/mL. Furthermore, we investigated the structure-activity relationship of the conjugates and identified the length of attached alkyl chains of d-erythro-sphingosine to be critical for anti-inflammatory effect. Decrease in alkyl chain length of NAHNP resulted in loss of inhibitory activity. In line with these findings, 6-O-sulfate groups of D-glucosamine residue were essential for effective inhibition, while removal of 2-O-sulfo and 3-O-sulfo groups as well as replacement of N-sulfo groups with N-acetyl did not alter anti-inflammatory activity. Therefore, NAHNP would be a promising candidate in acute and chronic inflammatory disorders, in addition to the nature of a drug carrier.
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Affiliation(s)
- Hasan Babazada
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Fumiyoshi Yamashita
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Yanamoto
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuru Hashida
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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Expression of toll-like receptors 3, 7, and 9 in peripheral blood mononuclear cells from patients with systemic lupus erythematosus. Mediators Inflamm 2014; 2014:381418. [PMID: 24692849 PMCID: PMC3955595 DOI: 10.1155/2014/381418] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 01/13/2014] [Indexed: 12/11/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease of unknown aetiology. The results of experimental studies point to the involvement of innate immunity receptors-toll-like receptors (TLR)-in the pathogenesis of the disease. The aim of the study was to assess the expression of TLR3, 7, and 9 in the population of peripheral blood mononuclear cells (PBMC) and in B lymphocytes (CD19(+)), T lymphocytes (CD4(+) and CD8(+)) using flow cytometry. The study group included 35 patients with SLE and 15 healthy controls. The patient group presented a significantly higher percentage of TLR3- and TLR9-positive cells among all PBMCs and their subpopulations (CD3(+), CD4(+), CD8(+), and CD19(+) lymphocytes) as well as TLR7 in CD19(+) B-lymphocytes, compared to the control group. There was no correlation between the expression of all studied TLRs and the disease activity according to the SLAM scale, and the degree of organ damage according to the SLICC/ACR Damage Index. However, a correlation was observed between the percentage of various TLR-positive cells and some clinical (joint lesions) and laboratory (lymphopenia, hypogammaglobulinemia, anaemia, and higher ESR) features and menopause in women. The results of the study suggest that TLR3, 7, and 9 play a role in the pathogenesis of SLE and have an impact on organ involvement in SLE.
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37
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TLR8 on dendritic cells and TLR9 on B cells restrain TLR7-mediated spontaneous autoimmunity in C57BL/6 mice. Proc Natl Acad Sci U S A 2014; 111:1497-502. [PMID: 24474776 DOI: 10.1073/pnas.1314121111] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a complex autoimmune disease with diverse clinical presentations characterized by the presence of autoantibodies to nuclear components. Toll-like receptor (TLR)7, TLR8, and TLR9 sense microbial or endogenous nucleic acids and are implicated in the development of SLE. In mice TLR7-deficiency ameliorates SLE, but TLR8- or TLR9-deficiency exacerbates the disease because of increased TLR7 response. Thus, both TLR8 and TLR9 control TLR7 function, but whether TLR8 and TLR9 act in parallel or in series in the same or different cell types in controlling TLR7-mediated lupus remains unknown. Here, we reveal that double TLR8/9-deficient (TLR8/9(-/-)) mice on the C57BL/6 background showed increased abnormalities characteristic of SLE, including splenomegaly, autoantibody production, frequencies of marginal zone and B1 B cells, and renal pathology compared with single TLR8(-/-) or TLR9(-/-) mice. On the cellular level, TLR8(-/-) and TLR8/9(-/-) dendritic cells were hyperesponsive to TLR7 ligand R848, but TLR9(-/-) cells responded normally. Moreover, B cells from TLR9(-/-) and TLR8/9(-/-) mice were hyperesponsive to R848, but TLR8(-/-) B cells were not. These results reveal that TLR8 and TLR9 have an additive effect on controlling TLR7 function and TLR7-mediated lupus; however, they act on different cell types. TLR8 controls TLR7 function on dendritic cells, and TLR9 restrains TLR7 response on B cells.
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Kanakoudi-Tsakalidou F, Farmaki E, Tzimouli V, Taparkou A, Paterakis G, Trachana M, Pratsidou-Gertsi P, Nalbanti P, Papachristou F. Simultaneous changes in serum HMGB1 and IFN-α levels and in LAIR-1 expression on plasmatoid dendritic cells of patients with juvenile SLE. New therapeutic options? Lupus 2014; 23:305-12. [PMID: 24399813 DOI: 10.1177/0961203313519157] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We investigated the simultaneous changes in serum levels of HMGB1 and IFN-α as well as in LAIR-1 expression on plasmatoid dendritic cells (pDCs) of juvenile systemic lupus erythematosus (jSLE) patients in order to explore their involvement in the disease pathogenesis and their correlation with disease activity and other characteristics. In total, 62 blood samples were studied from 26 jSLE patients (18 girls), aged 8-16 years. Twenty healthy subjects (16 girls) of comparable age were included as healthy controls (HCs). Concentrations of serum HMGB1 and IFN-α were assessed by ELISA and LAIR-1 expression on pDCs by five-color flow cytometry. The disease activity index was assessed by SLEDAI and ECLAM scores. It was found that mean serum levels both of HMGB1 and IFN-α were significantly increased in jSLE patients compared to HCs and in jSLE patients with active disease with or without active nephritis compared to those with inactive disease. Mean serum levels of HMGB1 were positively correlated with levels of IFN-α and both were positively correlated with the SLEDAI and ECLAM scores. The expression of LAIR -1 on pDCs of jSLE patients was significantly lower than that of HCs. In conclusion, our findings indicate that serum HMGB1 not only represents a potential marker of disease activity but together with the lack of LAIR-1 inhibitory function may contribute to the sustained inflammatory action of IFN-α in jSLE. In this regard, blocking the action of HMGB1 and its receptors or enhancing the expression/inhibitory function of LAIR-1 on pDCs should be included in future immune interventions for controlling jSLE.
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Affiliation(s)
- F Kanakoudi-Tsakalidou
- 1First Department of Pediatrics, Pediatric Immunology and Rheumatology Referral Centre, Aristotle University, "Hippokration" General Hospital, Thessaloniki, Greece
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Kono DH, Baccala R, Theofilopoulos AN. TLRs and interferons: a central paradigm in autoimmunity. Curr Opin Immunol 2013; 25:720-7. [PMID: 24246388 DOI: 10.1016/j.coi.2013.10.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 10/06/2013] [Indexed: 01/08/2023]
Abstract
Investigations into the pathogenesis of lupus have largely focused on abnormalities in components of the adaptive immune system. Despite important advances, however, the question about the origin of the pathogenic process, the primary disease trigger, and the dominance of autoantibodies against nuclear components, remained unanswered. Discoveries in the last decade have provided some resolution to these questions by elucidating the central role of nucleic acid-sensing TLRs and the attendant inflammatory response, particularly the production of type I interferons. These priming events are responsible for initiating the adaptive responses that ultimately mediate the pathogenic process.
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Affiliation(s)
- Dwight H Kono
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, United States.
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40
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Ramsey JE, Fontes JD. The zinc finger transcription factor ZXDC activates CCL2 gene expression by opposing BCL6-mediated repression. Mol Immunol 2013; 56:768-80. [PMID: 23954399 DOI: 10.1016/j.molimm.2013.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 06/28/2013] [Accepted: 07/04/2013] [Indexed: 12/12/2022]
Abstract
The zinc finger X-linked duplicated (ZXD) family of transcription factors has been implicated in regulating transcription of major histocompatibility complex class II genes in antigen presenting cells; roles beyond this function are not yet known. The expression of one gene in this family, ZXD family zinc finger C (ZXDC), is enriched in myeloid lineages and therefore we hypothesized that ZXDC may regulate myeloid-specific gene expression. Here we demonstrate that ZXDC regulates genes involved in myeloid cell differentiation and inflammation. Overexpression of the larger isoform of ZXDC, ZXDC1, activates expression of monocyte-specific markers of differentiation and synergizes with phorbol 12-myristate 13-acetate (which causes differentiation) in the human leukemic monoblast cell line U937. To identify additional gene targets of ZXDC1, we performed gene expression profiling which revealed multiple inflammatory gene clusters regulated by ZXDC1. Using a combination of approaches we show that ZXDC1 activates transcription of a gene within one of the regulated clusters, chemokine (C-C motif) ligand 2 (CCL2; monocyte chemoattractant protein 1; MCP1) via a previously defined distal regulatory element. Further, ZXDC1-dependent up-regulation of the gene involves eviction of the transcriptional repressor B-cell CLL/lymphoma 6 (BCL6), a factor known to be important in resolving inflammatory responses, from this region of the promoter. Collectively, our data show that ZXDC1 is a regulator in the process of myeloid function and that ZXDC1 is responsible for Ccl2 gene de-repression by BCL6.
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Affiliation(s)
- Jon E Ramsey
- Department of Biochemistry and Molecular Biology, University of Kansas School of Medicine, 3901 Rainbow Boulevard, MS3030, Kansas City, KS 66160, USA.
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Abstract
Dry eye is a common ocular surface inflammatory disease that significantly affects quality of life. Dysfunction of the lacrimal function unit (LFU) alters tear composition and breaks ocular surface homeostasis, facilitating chronic inflammation and tissue damage. Accordingly, the most effective treatments to date are geared towards reducing inflammation and restoring normal tear film. The pathogenic role of CD4+ T cells is well known, and the field is rapidly realizing the complexity of other innate and adaptive immune factors involved in the development and progression of disease. The data support the hypothesis that dry eye is a localized autoimmune disease originating from an imbalance in the protective immunoregulatory and proinflammatory pathways of the ocular surface.
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Affiliation(s)
- Michael E Stern
- Biological Sciences, Inflammation Research Program, Allergan Inc., Irvine, CA 92612, USA. stern
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Abramovits W, Oquendo M. Introduction to Autoinflammatory Syndromes and Diseases. Dermatol Clin 2013; 31:363-85. [DOI: 10.1016/j.det.2013.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Pang L, Hayes CP, Buac K, Yoo DG, Rada B. Pseudogout-Associated Inflammatory Calcium Pyrophosphate Dihydrate Microcrystals Induce Formation of Neutrophil Extracellular Traps. THE JOURNAL OF IMMUNOLOGY 2013; 190:6488-500. [DOI: 10.4049/jimmunol.1203215] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Koh YT, Scatizzi JC, Gahan JD, Lawson BR, Baccala R, Pollard KM, Beutler BA, Theofilopoulos AN, Kono DH. Role of nucleic acid-sensing TLRs in diverse autoantibody specificities and anti-nuclear antibody-producing B cells. THE JOURNAL OF IMMUNOLOGY 2013; 190:4982-90. [PMID: 23589617 DOI: 10.4049/jimmunol.1202986] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nucleic acid (NA)-sensing TLRs (NA-TLRs) promote the induction of anti-nuclear Abs in systemic lupus erythematosus. However, the extent to which other nonnuclear pathogenic autoantibody specificities that occur in lupus and independently in other autoimmune diseases depend on NA-TLRs, and which immune cells require NA-TLRs in systemic autoimmunity, remains to be determined. Using Unc93b1(3d) lupus-prone mice that lack NA-TLR signaling, we found that all pathogenic nonnuclear autoantibody specificities examined, even anti-RBC, required NA-TLRs. Furthermore, we document that NA-TLRs in B cells were required for the development of antichromatin and rheumatoid factor. These findings support a unifying NA-TLR-mediated mechanism of autoantibody production that has both pathophysiological and therapeutic implications for systemic lupus erythematosus and several other humoral-mediated autoimmune diseases. In particular, our findings suggest that targeting of NA-TLR signaling in B cells alone would be sufficient to specifically block production of a broad diversity of autoantibodies.
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Affiliation(s)
- Yi Ting Koh
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
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Abstract
miRNAs have been shown to play essential regulatory roles in the innate immune system. They function at multiple levels to shape the innate immune response and maintain homeostasis by direct suppression of the expression of their target proteins, preferentially crucial signaling components and transcription factors. Studies in humans and in disease models have revealed that dysregulation of several miRNAs such as miR-146a and miR-155 in rheumatic diseases leads to aberrant production of and/or signaling by inflammatory cytokines and, thus, critically contributes to disease pathogenesis. In addition, the recent description of the role of certain extracellular miRNAs as innate immune agonist to induce inflammatory response would have direct relevance to rheumatic diseases.
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Pollard KM, Kono DH. Requirements for innate immune pathways in environmentally induced autoimmunity. BMC Med 2013; 11:100. [PMID: 23557436 PMCID: PMC3616845 DOI: 10.1186/1741-7015-11-100] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 03/07/2013] [Indexed: 02/06/2023] Open
Abstract
There is substantial evidence that environmental triggers in combination with genetic and stochastic factors play an important role in spontaneous autoimmune disease. Although the specific environmental agents and how they promote autoimmunity remain largely unknown, in part because of diverse etiologies, environmentally induced autoimmune models can provide insights into potential mechanisms. Studies of idiopathic and environmentally induced systemic autoimmunity show that they are mediated by common adaptive immune response genes. By contrast, although the innate immune system is indispensable for autoimmunity, there are clear differences in the molecular and cellular innate components that mediate specific systemic autoimmune diseases, suggesting distinct autoimmune-promoting pathways. Some of these differences may be related to the bifurcation of toll-like receptor signaling that distinguishes interferon regulatory factor 7-mediated type I interferon production from nuclear factor-κB-driven proinflammatory cytokine expression. Accordingly, idiopathic and pristane-induced systemic autoimmunity require both type I interferon and proinflammatory cytokines whereas the less aggressive mercury-induced autoimmunity, although dependent on nucleic acid-binding toll-like receptors, does not require type I interferon but needs proinflammatory cytokines. Scavenger receptors and the inflammasome may contribute to silica-induced autoimmunity. Greater understanding of the innate mechanisms responsible for idiopathic and environmentally induced autoimmunity should yield new information into the processes that instigate and drive systemic autoimmunity.
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Affiliation(s)
- Kenneth Michael Pollard
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
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Inflammatory immune cell responses and Toll-like receptor expression in synovial tissues in rheumatoid arthritis patients treated with biologics or DMARDs. Clin Rheumatol 2013; 32:853-61. [PMID: 23397147 DOI: 10.1007/s10067-013-2209-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 05/31/2012] [Accepted: 01/30/2013] [Indexed: 01/20/2023]
Abstract
Biologic antirheumatic drugs (BIO) have been reported to be potent therapeutic agents in the prevention of inflammatory joint destruction in rheumatoid arthritis (RA). The aim of this study was to investigate the immune-inflammatory cells, including Toll-like receptor (TLR)-equipped cells, in synovial tissue samples from RA patients on BIO compared to patients, who are only on conventional disease-modifying antirheumatic drug (DMARD). We analyzed immune-inflammatory cells in RA synovitis in patients of BIO group (n = 20) or DMARD group (n = 20). The grading scores of synovitis was 1.7 and 1.8 in each BIO and DMARD group and correlated best with the CD3(+) T (r = 0.71/0.70, p < 0.05) and CD20(+) B (r = 0.80/0.84, p < 0.05) cells in the both groups, but less well with the CD68(+) macrophages and S-100(+) dendritic cells (DCs). Interestingly, both T (116 vs. 242, p < 0.05) and B (80 vs. 142, p < 0.05) cell counts were lower in the BIO than in the DMARD group, whereas macrophage and DC counts did not differ. In contrast, the C-reactive protein (CRP) and disease activity score DAS28-CRP did not show clear-cut correlations with the inflammatory grade of the synovitis (r range, 0-0.35). Similar numbers of cells immunoreactive for TLR-1 to TLR-6 and TLR-9 were found in synovitis in both groups. Patients clinically responding to biologics might still have the potential of moderate/severe local joint inflammation, composed in particular of and possibly driven by the autoinflammatory TLR(+) cells.
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Doria A, Zen M, Bettio S, Gatto M, Bassi N, Nalotto L, Ghirardello A, Iaccarino L, Punzi L. Autoinflammation and autoimmunity: Bridging the divide. Autoimmun Rev 2012; 12:22-30. [DOI: 10.1016/j.autrev.2012.07.018] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Theofilopoulos AN. TLRs and IFNs: critical pieces of the autoimmunity puzzle. J Clin Invest 2012; 122:3464-6. [PMID: 23154274 DOI: 10.1172/jci63835] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Discoveries revealing the molecular basis of innate immune responses, particularly the identification of Toll-like receptors (TLRs) as the major recognition sensors for microbial and even self-molecules, have provided new insights into the pathogenesis of both systemic and organ-specific autoimmune diseases. These insights will permit the development of novel treatment modalities for these disorders.
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Affiliation(s)
- Argyrios N Theofilopoulos
- Department of Immunology and Microbial Science, Scripps Research Institute, La Jolla, California 92037, USA.
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Pone EJ, Xu Z, White CA, Zan H, Casali P. B cell TLRs and induction of immunoglobulin class-switch DNA recombination. Front Biosci (Landmark Ed) 2012; 17:2594-615. [PMID: 22652800 DOI: 10.2741/4073] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Toll-like receptors (TLRs) are a family of conserved pattern recognition receptors (PRRs). Engagement of B cell TLRs by microbe-associated molecular patterns (MAMPs) induces T-independent (TI) antibody responses and plays an important role in the early stages of T-dependent (TD) antibody responses before specific T cell help becomes available. The role of B cell TLRs in the antibody response is magnified by the synergy of B cell receptor (BCR) crosslinking and TLR engagement in inducing immunoglobulin (Ig) class switch DNA recombination (CSR), which crucially diversifies the antibody biological effector functions. Dual BCR/TLR engagement induces CSR to all Ig isotypes, as directed by cytokines, while TLR engagement alone induces marginal CSR. Integration of BCR and TLR signaling results in activation of the canonical and non-canonical NF-κB pathways, induction of activation-induced cytidine deaminase (AID) and germline transcription of IgH switch (S) regions. A critical role of B cell TLRs in CSR and the antibody response is emphasized by the emergence of several TLR ligands as integral components of vaccines that greatly boost humoral immunity in a B cell-intrinsic fashion.
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Affiliation(s)
- Egest J Pone
- Institute for Immunology, School of Medicine, University of California, Irvine, CA 92697-4120, USA
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