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De Visscher A, Vandeput M, Vandenhaute J, Malengier-Devlies B, Bernaerts E, Ahmadzadeh K, Filtjens J, Mitera T, Berghmans N, Van den Steen PE, Friedrich C, Gasteiger G, Wouters C, Matthys P. Liver type 1 innate lymphoid cells undergo apoptosis in murine models of macrophage activation syndrome and are dispensable for disease. Eur J Immunol 2024:e2451043. [PMID: 39348088 DOI: 10.1002/eji.202451043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 09/03/2024] [Accepted: 09/14/2024] [Indexed: 10/01/2024]
Abstract
Macrophage activation syndrome (MAS) exemplifies a severe cytokine storm disorder with liver inflammation. In the liver, classical natural killer (cNK) cells and liver-resident type 1 innate lymphoid cells (ILC1s) dominate the ILC population. Thus far, research has primarily focused on the corresponding role of cNK cells. Considering the liver inflammation and cytokine storm in MAS, liver-resident ILC1s represent an interesting population to explore due to their rapid cytokine production upon environmental triggers. By utilizing a Toll-like receptor (TLR)9- and TLR3:4-triggered MAS model, we showed that ILC1s highly produce IFN-γ and TNF-α. However, activated ILC1s undergo apoptosis and are strongly reduced in numbers, while cNK cells resist inflammation-induced apoptosis. Signs of mitochondrial stress suggest that this ILC1 apoptosis may be driven by inflammation-induced mitochondrial impairment. To study whether early induction of highly cytokine-producing ILC1s influences MAS development, we used Hobit KO mice due to their paucity of liver ILC1s but unaffected cNK cell numbers. Nevertheless, neither the severity of MAS features nor the total inflammatory cytokine levels were affected in these Hobit KO mice, indicating that ILC1s are dispensable for MAS pathogenesis. Collectively, our data demonstrate that ILC1s undergo apoptosis during TLR-triggering and are dispensable for MAS pathogenesis.
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Affiliation(s)
- Amber De Visscher
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Marte Vandeput
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Jessica Vandenhaute
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Bert Malengier-Devlies
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
- Centre for Reproductive Health and Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - Eline Bernaerts
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Jessica Filtjens
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Tania Mitera
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Nele Berghmans
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Philippe E Van den Steen
- Laboratory of Immunoparasitology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Christin Friedrich
- Würzburg Institute and Max Planck Research Group for Systems Immunology, Würzburg, Germany
| | - Georg Gasteiger
- Würzburg Institute and Max Planck Research Group for Systems Immunology, Würzburg, Germany
| | - Carine Wouters
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
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2
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Ruscitti P, Cantarini L, Nigrovic PA, McGonagle D, Giacomelli R. Recent advances and evolving concepts in Still's disease. Nat Rev Rheumatol 2024; 20:116-132. [PMID: 38212542 DOI: 10.1038/s41584-023-01065-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2023] [Indexed: 01/13/2024]
Abstract
Still's disease is a rare inflammatory syndrome that encompasses systemic juvenile idiopathic arthritis and adult-onset Still's disease, both of which can exhibit life-threatening complications, including macrophage activation syndrome (MAS), a secondary form of haemophagocytic lymphohistiocytosis. Genetic insights into Still's disease involve both HLA and non-HLA susceptibility genes, suggesting the involvement of adaptive immune cell-mediated immunity. At the same time, phenotypic evidence indicates the involvement of autoinflammatory processes. Evidence also implicates the type I interferon signature, mechanistic target of rapamycin complex 1 signalling and ferritin in the pathogenesis of Still's disease and MAS. Pathological entities associated with Still's disease include lung disease that could be associated with biologic DMARDs and with the occurrence of MAS. Historically, monophasic, recurrent and persistent Still's disease courses were recognized. Newer proposals of alternative Still's disease clusters could enable better dissection of clinical heterogeneity on the basis of immune cell profiles that could represent diverse endotypes or phases of disease activity. Therapeutically, data on IL-1 and IL-6 antagonism and Janus kinase inhibition suggest the importance of early administration in Still's disease. Furthermore, there is evidence that patients who develop MAS can be treated with IFNγ antagonism. Despite these developments, unmet needs remain that can form the basis for the design of future studies leading to improvement of disease management.
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Affiliation(s)
- Piero Ruscitti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
| | - Luca Cantarini
- Department of Medical Sciences, Surgery and Neurosciences, Research Center of Systemic Autoinflammatory Diseases and Behçet's Disease Clinic, University of Siena, Siena, Italy
| | - Peter A Nigrovic
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK
- National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), Leeds Teaching Hospitals, Leeds, UK
| | - Roberto Giacomelli
- Clinical and research section of Rheumatology and Clinical Immunology, Fondazione Policlinico Campus Bio-Medico, Rome, Italy
- Rheumatology and Clinical Immunology, Department of Medicine, University of Rome "Campus Biomedico", School of Medicine, Rome, Italy
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3
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Canna SW. Autoinflammatory Contributors to Cytokine Storm. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:385-397. [PMID: 39117828 DOI: 10.1007/978-3-031-59815-9_26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Cytokine Storm is a complex and heterogeneous state of life-threatening systemic inflammation and immunopathology. Autoinflammation is a mechanistic category of immune dysregulation wherein immunopathology originates due to poor regulation of innate immunity. The growing family of monogenic Systemic Autoinflammatory Diseases (SAIDs) has been a wellspring for pathogenic insights and proof-of-principle targeted therapeutic interventions. There is surprisingly little overlap between SAID and Cytokine Storm Syndromes, and there is a great deal to be inferred from those SAID that do, and do not, consistently lead to Cytokine Storm. This chapter will summarize how illustrations of the autoinflammatory paradigm have advanced the understanding of human inflammation, including the role of autoinflammation in familial HLH. Next, it will draw from monogenic SAID, both those with strong associations with cytokine storm and those without, to illustrate how the cytokine IL-18 links innate immune dysregulation and cytokine storm.
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Affiliation(s)
- Scott W Canna
- Perelman School of Medicine, University of Pennsylvania, Pediatric Rheumatology and Immune Dysregulation, The Childrens Hospital of Philadelphia, Philadelphia, PA, USA.
- Division of Rheumatology and Immune Dysregulation Program, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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4
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Vastert SJ, Canny SP, Canna SW, Schneider R, Mellins ED. Cytokine Storm Syndrome Associated with Systemic Juvenile Idiopathic Arthritis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:323-353. [PMID: 39117825 DOI: 10.1007/978-3-031-59815-9_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
The cytokine storm syndrome (CSS) associated with systemic juvenile idiopathic arthritis (sJIA) has widely been referred to as macrophage activation syndrome (MAS). In this chapter, we use the term sJIA-associated CSS (sJIA-CSS) when referring to this syndrome and use the term MAS when referencing publications that specifically report on sJIA-associated MAS.
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Affiliation(s)
- Sebastiaan J Vastert
- Department of Paediatric Rheumatology & Immunology and Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Susan P Canny
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Scott W Canna
- Department of Pediatrics and Institute for Immunology, University of Pennsylvania, Philadelphia, PA, USA
| | - Rayfel Schneider
- Department of Paediatrics, University of Toronto and The Hospital for Sick Children, Toronto, ON, Canada
| | - Elizabeth D Mellins
- Divisions of Human Gene Therapy and Allergy, Immunology & Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA.
- Stanford Program in Immunology, Stanford University School of Medicine, Stanford, CA, USA.
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5
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Behrens EM. Cytokines in Cytokine Storm Syndrome. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:173-183. [PMID: 39117815 DOI: 10.1007/978-3-031-59815-9_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
As the eponymous mediators of the cytokine storm syndrome, cytokines are a pleomorphic and diverse set of soluble molecules that activate or suppress immune functions in a wide variety of ways. The relevant cytokines for each CSS are likely a result of differing combinations of environmental triggers and host susceptibilities. Because cytokines or their receptors may be specifically targeted by biologic therapeutics, understanding which cytokines are relevant for disease initiation and propagation for each unique CSS is of major clinical importance. This chapter will review what is known about the role of cytokines across the spectrum of CSS.
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Affiliation(s)
- Edward M Behrens
- Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA, USA.
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6
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Tsoukas P, Yeung RSM. Kawasaki Disease-Associated Cytokine Storm Syndrome. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:365-383. [PMID: 39117827 DOI: 10.1007/978-3-031-59815-9_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Kawasaki disease (KD) is a hyperinflammatory syndrome manifesting as an acute systemic vasculitis characterized by fever, nonsuppurative conjunctival injection, rash, oral mucositis, extremity changes, and cervical lymphadenopathy. KD predominantly affects young children and shares clinical features and immunobiology with other hyperinflammation syndromes including systemic juvenile idiopathic arthritis (sJIA) and multisystem inflammatory syndrome in children (MIS-C). Cytokine storm syndrome (CSS) is an acute complication in ~2% of KD patients; however, the incidence is likely underestimated as many clinical and laboratory features of both diseases overlap. CSS should be entertained when a child with KD is unresponsive to IVIG therapy with recalcitrant fever. Early recognition and prompt institution of immunomodulatory treatment can substantially reduce the mortality and morbidity of CSS in KD. Given the known pathogenetic role of IL-1β in both syndromes, the early use of IL-1 blockers in refractory KD with CSS deserves consideration.
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Affiliation(s)
- Paul Tsoukas
- Division of Rheumatology, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Paediatrics, Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Rae S M Yeung
- Division of Rheumatology, The Hospital for Sick Children, Toronto, ON, Canada.
- Department of Paediatrics, Institute of Medical Science, University of Toronto, Toronto, ON, Canada.
- Department of Immunology, University of Toronto, Toronto, ON, Canada.
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7
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Schulert GS, Kessel C. Molecular Pathways in the Pathogenesis of Systemic Juvenile Idiopathic Arthritis. Rheum Dis Clin North Am 2023; 49:895-911. [PMID: 37821202 DOI: 10.1016/j.rdc.2023.06.007] [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] [Indexed: 10/13/2023]
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a rare childhood chronic inflammatory disorder with risk for life-threatening complications including macrophage activation syndrome and lung disease. At onset, sJIA pathogenesis resembles that of the autoinflammatory periodic fever syndromes with marked innate immune activation, expansion of neutrophils and monocytes, and high levels of interleukin-18. Here, we review the current conceptual understanding of sJIA pathogenesis with a focus on both innate and adaptive immune pathways. Finally, we consider how recent progress toward understanding the immunologic basis of sJIA may support new therapies for refractory disease courses.
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Affiliation(s)
- Grant S Schulert
- Division of Rheumatology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, 3333 Burnet Avenue, MLC 4010, Cincinnati, OH 45229, USA.
| | - Christoph Kessel
- Department of Pediatric Rheumatology and Immunology, Translational Inflammation Research, University Children's Hospital, Muenster, Germany
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8
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Nijhuis L, Swart JF, Prakken BJ, van Loosdregt J, Vastert SJ. The clinical and experimental treatment of Juvenile Idiopathic Arthritis. Clin Exp Immunol 2023; 213:276-287. [PMID: 37074076 PMCID: PMC10571000 DOI: 10.1093/cei/uxad045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 03/02/2023] [Accepted: 04/18/2023] [Indexed: 04/20/2023] Open
Abstract
Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in children and comprises of multiple subtypes. The most relevant disease subtypes, grouped upon current insight in disease mechanisms, are nonsystemic (oligo- and polyarticular) JIA and systemic JIA (sJIA). In this review, we summarize some of the main proposed mechanisms of disease in both nonsystemic and sJIA and discuss how current therapeutic modalities target some of the pathogenic immune pathways. Chronic inflammation in nonsystemic JIA is the result of a complex interplay between effector and regulatory immune cell subsets, with adaptive immune cells, specifically T-cell subsets and antigen-presenting cells, in a central role. There is, however, also innate immune cell contribution. SJIA is nowadays recognized as an acquired chronic inflammatory disorder with striking autoinflammatory features in the first phase of the disease. Some sJIA patients develop a refractory disease course, with indications for involvement of adaptive immune pathways as well. Currently, therapeutic strategies are directed at suppressing effector mechanisms in both non-systemic and sJIA. These strategies are often not yet optimally tuned nor timed to the known active mechanisms of disease in individual patients in both non-systemic and sJIA. We discuss current treatment strategies in JIA, specifically the 'Step-up' and 'Treat to Target approach' and explore how increased insight into the biology of disease may translate into future more targeted strategies for this chronic inflammatory disease at relevant time points: preclinical disease, active disease, and clinically inactive disease.
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Affiliation(s)
- L Nijhuis
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of pediatric rheumatology & immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - J F Swart
- Department of pediatric rheumatology & immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- University of Utrecht, Utrecht, The Netherlands
| | - B J Prakken
- Department of pediatric rheumatology & immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- University of Utrecht, Utrecht, The Netherlands
| | - J van Loosdregt
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- University of Utrecht, Utrecht, The Netherlands
| | - S J Vastert
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of pediatric rheumatology & immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- University of Utrecht, Utrecht, The Netherlands
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9
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La Bella S, Rinaldi M, Di Ludovico A, Di Donato G, Di Donato G, Salpietro V, Chiarelli F, Breda L. Genetic Background and Molecular Mechanisms of Juvenile Idiopathic Arthritis. Int J Mol Sci 2023; 24:ijms24031846. [PMID: 36768167 PMCID: PMC9916312 DOI: 10.3390/ijms24031846] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/07/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023] Open
Abstract
Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in the paediatric population. JIA comprises a heterogeneous group of disorders with different onset patterns and clinical presentations with the only element in common being chronic joint inflammation. This review sought to evaluate the most relevant and up-to-date evidence on current knowledge regarding the pathogenesis of JIA subtypes to provide a better understanding of these disorders. Despite significant improvements over the past decade, the aetiology and molecular mechanisms of JIA remain unclear. It has been suggested that the immunopathogenesis is characterised by complex interactions between genetic background and environmental factors that may differ between JIA subtypes. Human leukocyte antigen (HLA) haplotypes and non-HLA genes play a crucial role in the abnormal activation of both innate and adaptive immune cells that cooperate in causing the inflammatory process. This results in the involvement of proinflammatory cytokines, including tumour necrosis factor (TNF)α, interleukin (IL)-1, IL-6, IL-10, IL-17, IL-21, IL-23, and others. These mediators, interacting with the surrounding tissue, cause cartilage stress and bone damage, including irreversible erosions. The purpose of this review is to provide a comprehensive overview of the genetic background and molecular mechanisms of JIA.
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Affiliation(s)
- Saverio La Bella
- Paediatric Department, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy
| | - Marta Rinaldi
- Paediatric Department, Buckinghamshire Healthcare NHS Trust, Aylesbury-Thames Valley Deanery, Aylesbury HP21 8AL, UK
| | - Armando Di Ludovico
- Paediatric Department, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy
| | - Giulia Di Donato
- Paediatric Department, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy
| | - Giulio Di Donato
- Paediatric Department, University of L’Aquila, 67100 L’Aquila, Italy
| | | | - Francesco Chiarelli
- Paediatric Department, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy
| | - Luciana Breda
- Paediatric Department, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy
- Correspondence: ; Tel.: +39-0871-357377
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10
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Ailioaie LM, Ailioaie C, Litscher G. Biomarkers in Systemic Juvenile Idiopathic Arthritis, Macrophage Activation Syndrome and Their Importance in COVID Era. Int J Mol Sci 2022; 23:12757. [PMID: 36361547 PMCID: PMC9655921 DOI: 10.3390/ijms232112757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 08/30/2023] Open
Abstract
Systemic juvenile idiopathic arthritis (sJIA) and its complication, macrophage activation syndrome (sJIA-MAS), are rare but sometimes very serious or even critical diseases of childhood that can occasionally be characterized by nonspecific clinical signs and symptoms at onset-such as non-remitting high fever, headache, rash, or arthralgia-and are biologically accompanied by an increase in acute-phase reactants. For a correct positive diagnosis, it is necessary to rule out bacterial or viral infections, neoplasia, and other immune-mediated inflammatory diseases. Delays in diagnosis will result in late initiation of targeted therapy. A set of biomarkers is useful to distinguish sJIA or sJIA-MAS from similar clinical entities, especially when arthritis is absent. Biomarkers should be accessible to many patients, with convenient production and acquisition prices for pediatric medical laboratories, as well as being easy to determine, having high sensitivity and specificity, and correlating with pathophysiological disease pathways. The aim of this review was to identify the newest and most powerful biomarkers and their synergistic interaction for easy and accurate recognition of sJIA and sJIA-MAS, so as to immediately guide clinicians in correct diagnosis and in predicting disease outcomes, the response to treatment, and the risk of relapses. Biomarkers constitute an exciting field of research, especially due to the heterogeneous nature of cytokine storm syndromes (CSSs) in the COVID era. They must be selected with utmost care-a fact supported by the increasingly improved genetic and pathophysiological comprehension of sJIA, but also of CSS-so that new classification systems may soon be developed to define homogeneous groups of patients, although each with a distinct disease.
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Affiliation(s)
- Laura Marinela Ailioaie
- Department of Medical Physics, Alexandru Ioan Cuza University, 11 Carol I Boulevard, 700506 Iasi, Romania
| | - Constantin Ailioaie
- Department of Medical Physics, Alexandru Ioan Cuza University, 11 Carol I Boulevard, 700506 Iasi, Romania
| | - Gerhard Litscher
- Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine, Research Unit for Complementary and Integrative Laser Medicine, Traditional Chinese Medicine (TCM) Research Center Graz, Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 39, 8036 Graz, Austria
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11
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Malengier-Devlies B, Filtjens J, Ahmadzadeh K, Boeckx B, Vandenhaute J, De Visscher A, Bernaerts E, Mitera T, Jacobs C, Vanderbeke L, Van Mol P, Van Herck Y, Hermans G, Meersseman P, Wilmer A, Gouwy M, Garg AD, Humblet-Baron S, De Smet F, Martinod K, Wauters E, Proost P, Wouters C, Leclercq G, Lambrechts D, Wauters J, Matthys P. Severe COVID-19 patients display hyper-activated NK cells and NK cell-platelet aggregates. Front Immunol 2022; 13:861251. [PMID: 36275702 PMCID: PMC9581751 DOI: 10.3389/fimmu.2022.861251] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 08/15/2022] [Indexed: 01/08/2023] Open
Abstract
COVID-19 is characterised by a broad spectrum of clinical and pathological features. Natural killer (NK) cells play an important role in innate immune responses to viral infections. Here, we analysed the phenotype and activity of NK cells in the blood of COVID-19 patients using flow cytometry, single-cell RNA-sequencing (scRNA-seq), and a cytotoxic killing assay. In the plasma of patients, we quantified the main cytokines and chemokines. Our cohort comprises COVID-19 patients hospitalised in a low-care ward unit (WARD), patients with severe COVID-19 disease symptoms hospitalised in intensive care units (ICU), and post-COVID-19 patients, who were discharged from hospital six weeks earlier. NK cells from hospitalised COVID-19 patients displayed an activated phenotype with substantial differences between WARD and ICU patients and the timing when samples were taken post-onset of symptoms. While NK cells from COVID-19 patients at an early stage of infection showed increased expression of the cytotoxic molecules perforin and granzyme A and B, NK cells from patients at later stages of COVID-19 presented enhanced levels of IFN-γ and TNF-α which were measured ex vivo in the absence of usual in vitro stimulation. These activated NK cells were phenotyped as CD49a+CD69a+CD107a+ cells, and their emergence in patients correlated to the number of neutrophils, and plasma IL-15, a key cytokine in NK cell activation. Despite lower amounts of cytotoxic molecules in NK cells of patients with severe symptoms, majority of COVID-19 patients displayed a normal cytotoxic killing of Raji tumour target cells. In vitro stimulation of patients blood cells by IL-12+IL-18 revealed a defective IFN-γ production in NK cells of ICU patients only, indicative of an exhausted phenotype. ScRNA-seq revealed, predominantly in patients with severe COVID-19 disease symptoms, the emergence of an NK cell subset with a platelet gene signature that we identified by flow and imaging cytometry as aggregates of NK cells with CD42a+CD62P+ activated platelets. Post-COVID-19 patients show slow recovery of NK cell frequencies and phenotype. Our study points to substantial changes in NK cell phenotype during COVID-19 disease and forms a basis to explore the contribution of platelet-NK cell aggregates to antiviral immunity against SARS-CoV-2 and disease pathology.
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Affiliation(s)
- Bert Malengier-Devlies
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Jessica Filtjens
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Bram Boeckx
- Laboratory of Translational Genetics, Department of Human Genetics, VIB-KU Leuven, Leuven, Belgium
| | - Jessica Vandenhaute
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Amber De Visscher
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Eline Bernaerts
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Tania Mitera
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Cato Jacobs
- Laboratory for Clinical Infectious and Inflammatory Disorders, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Lore Vanderbeke
- Laboratory of Clinical Bacteriology and Mycology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Pierre Van Mol
- Laboratory of Translational Genetics, Department of Human Genetics, VIB-KU Leuven, Leuven, Belgium
| | - Yannick Van Herck
- Laboratory of Experimental Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Greet Hermans
- Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Philippe Meersseman
- Laboratory for Clinical Infectious and Inflammatory Disorders, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Alexander Wilmer
- Laboratory for Clinical Infectious and Inflammatory Disorders, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Abhishek D. Garg
- Laboratory for Cell Stress & Immunity (CSI), Department of Cellular and Molecular Medicine (CMM), KU Leuven, Leuven, Belgium
| | - Stephanie Humblet-Baron
- Adaptive Immunology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Frederik De Smet
- Laboratory for Precision Cancer Medicine, Translational Cell and Tissue Research, Department of Imaging & Pathology, KU Leuven, Leuven, Belgium
| | - Kimberly Martinod
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Els Wauters
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Carine Wouters
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Georges Leclercq
- Laboratory of Experimental Immunology, Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Diether Lambrechts
- Laboratory of Translational Genetics, Department of Human Genetics, VIB-KU Leuven, Leuven, Belgium
| | - Joost Wauters
- Laboratory for Clinical Infectious and Inflammatory Disorders, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
- *Correspondence: Patrick Matthys,
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12
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Miyazawa H, Wada T. Immune-mediated inflammatory diseases with chronic excess of serum interleukin-18. Front Immunol 2022; 13:930141. [PMID: 35958573 PMCID: PMC9358977 DOI: 10.3389/fimmu.2022.930141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/01/2022] [Indexed: 11/25/2022] Open
Abstract
Review: Interleukin-18 (IL-18) is a proinflammatory cytokine that promotes various innate immune processes related to infection, inflammation, and autoimmunity. Patients with systemic juvenile idiopathic arthritis and adult-onset Still’s disease exhibit chronic excess of serum IL-18, which is associated with a high incidence of macrophage activation syndrome (MAS), although the mechanisms of IL-18 regulation in such diseases remain largely unknown. Similar elevation of serum IL-18 and susceptibility to MAS/hemophagocytic lymphohistiocytosis (HLH) have been reported in monogenic diseases such as X-linked inhibitor of apoptosis deficiency (i.e., X-linked lymphoproliferative syndrome type 2) and NLRC4-associated autoinflammatory disease. Recent advances in molecular and cellular biology allow the identification of other genetic defects such as defects in CDC42, PSTPIP1, and WDR1 that result in high serum IL-18 levels and hyperinflammation. Among these diseases, chronic excess of serum IL-18 appears to be linked with severe hyperinflammation and/or predisposition to MAS/HLH. In this review, we focus on recent findings in inflammatory diseases associated with and probably attributable to chronic excess of serum IL-18 and describe the clinical and therapeutical relevance of understanding the pathology of this group of diseases.
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13
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Wu L, Wang R, Zhou Y, Zhao D, Chen F, Wu X, Chen X, Chen S, Li J, Zhu J. Natural Killer Cells Infiltration in the Joints Exacerbates Collagen-Induced Arthritis. Front Immunol 2022; 13:860761. [PMID: 35432322 PMCID: PMC9005809 DOI: 10.3389/fimmu.2022.860761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction The role of natural killer (NK) cells in rheumatoid arthritis remains controversial. We aimed to assess the role of NK cells in the pathogenesis of rheumatoid arthritis. Materials and Methods The percentage of NK cells in the peripheral blood, spleen, lymph nodes and inflamed paws from collagen-induced arthritis mice were examined through the disease progression. Correlation between the proportion of NK cells and subsets with arthritis score, histopathological changes, and bone destruction were evaluated. Adoptive cell transfer was performed to determine the effect of NKp46+NK cells on arthritis development, and the role of receptor NKp46 was explored with NKp46 knockout mice. Results The percentage of NK cells in peripheral blood decreased at the late stage of the disease and negatively correlated with arthritis score. NK cells increased in the inflamed paws during arthritis development and were positively associated with arthritis score, histopathological change, and bone destruction. Adoptive transfer of NKp46+NK cells before disease onset resulted in increased NK cells infiltration in the joints, higher incidence of arthritis, more severe clinical symptoms, and more pronounced joint inflammation and bone damage. NKp46 deficiency had no significant influence on the incidence and severity of arthritis in collagen-induced arthritis mice. Conclusions NK cell infiltration in the joints positively correlates with arthritis progression, inflammation, and bone destruction. The pathogenic role of NK cells in rheumatoid arthritis may be independent of the receptor NKp46.
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Affiliation(s)
- Lisheng Wu
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Ran Wang
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yi Zhou
- Department of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, China
| | - Di Zhao
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Feilong Chen
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xianghui Wu
- Laboratory Animal Research Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoguang Chen
- Department of Pathogen Biology, Key Laboratory of Tropical Disease Research of Guangdong Province, School of Public Health, Southern Medical University, Guangzhou, China
| | - Shixian Chen
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Juan Li
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Junqing Zhu
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
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14
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Rossano M, Rogani G, D’Errico MM, Cucchetti M, Baldo F, Torreggiani S, Beretta G, Lanni S, Petaccia A, Agostoni C, Filocamo G, Minoia F. Infection-Triggered Hyperinflammatory Syndromes in Children. CHILDREN 2022; 9:children9040564. [PMID: 35455608 PMCID: PMC9025340 DOI: 10.3390/children9040564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 12/02/2022]
Abstract
An association between infectious diseases and macrophage activation syndrome (MAS) has been reported, yet the exact role of infection in MAS development is still unclear. Here, a retrospective analysis of the clinical records of patients with rheumatic diseases complicated with MAS who were treated in a pediatric tertiary care center between 2011 and 2020 was performed. Any infection documented within the 30 days preceding the onset of MAS was reported. Out of 125 children in follow-up for systemic rheumatic diseases, 12 developed MAS, with a total of 14 episodes. One patient experienced three episodes of MAS. Clinical and/or laboratory evidence of infection preceded the onset of MAS in 12 events. Clinical features, therapeutic strategies, and patient outcomes were described. The aim of this study was to evaluate the possible role of infection as a relevant trigger for MAS development in children with rheumatic conditions. The pathogenetic pathways involved in the cross-talk between uncontrolled inflammatory activity and the immune response to infection deserve further investigation.
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Affiliation(s)
- Martina Rossano
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Greta Rogani
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Maria Maddalena D’Errico
- Department of Medical Sciences, IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy;
| | - Martina Cucchetti
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Francesco Baldo
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Sofia Torreggiani
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Gisella Beretta
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Stefano Lanni
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Antonella Petaccia
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Carlo Agostoni
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
| | - Giovanni Filocamo
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
- Correspondence:
| | - Francesca Minoia
- Pediatric Rheumatology, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano IT and University of Milan, 20122 Milan, Italy; (M.R.); (G.R.); (M.C.); (F.B.); (S.T.); (G.B.); (S.L.); (A.P.); (C.A.); (F.M.)
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15
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Ailioaie LM, Ailioaie C, Litscher G. Implications of SARS-CoV-2 Infection in Systemic Juvenile Idiopathic Arthritis. Int J Mol Sci 2022; 23:ijms23084268. [PMID: 35457086 PMCID: PMC9029451 DOI: 10.3390/ijms23084268] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/30/2022] [Accepted: 04/10/2022] [Indexed: 12/15/2022] Open
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a serious multifactorial autoinflammatory disease with a significant mortality rate due to macrophage activation syndrome (MAS). Recent research has deepened the knowledge about the pathophysiological mechanisms of sJIA-MAS, facilitating new targeted treatments, and biological disease-modifying antirheumatic drugs (bDMARDs), which significantly changed the course of the disease and prognosis. This review highlights that children are less likely to suffer severe COVID-19 infection, but at approximately 2–4 weeks, some cases of multisystem inflammatory syndrome in children (MIS-C) have been reported, with a fulminant course. Previous established treatments for cytokine storm syndrome (CSS) have guided COVID-19 therapeutics. sJIA-MAS is different from severe cases of COVID-19, a unique immune process in which a huge release of cytokines will especially flood the lungs. In this context, MIS-C should be reinterpreted as a special MAS, and long-term protection against SARS-CoV-2 infection can only be provided by the vaccine, but we do not yet have sufficient data. COVID-19 does not appear to have a substantial impact on rheumatic and musculoskeletal diseases (RMDs) activity in children treated with bDMARDs, but the clinical features, severity and outcome in these patients under various drugs are not yet easy to predict. Multicenter randomized controlled trials are still needed to determine when and by what means immunoregulatory products should be administered to patients with sJIA-MAS with a negative corticosteroid response or contraindications, to optimize their health and safety in the COVID era.
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Affiliation(s)
- Laura Marinela Ailioaie
- Department of Medical Physics, Alexandru Ioan Cuza University, 11 Carol I Boulevard, 700506 Iasi, Romania; (L.M.A.); (C.A.)
| | - Constantin Ailioaie
- Department of Medical Physics, Alexandru Ioan Cuza University, 11 Carol I Boulevard, 700506 Iasi, Romania; (L.M.A.); (C.A.)
| | - Gerhard Litscher
- Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine, Research Unit for Complementary and Integrative Laser Medicine, Traditional Chinese Medicine (TCM) Research Center Graz, Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 39, 8036 Graz, Austria
- Correspondence: ; Tel.: +43-316-385-83907
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16
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Ohya T, Nishimura K, Murase A, Hattori S, Ohara A, Nozawa T, Hara R, Ito S. Impaired Interleukin-18 Signaling in Natural Killer Cells From Patients With Systemic Juvenile Idiopathic Arthritis. ACR Open Rheumatol 2022; 4:503-510. [PMID: 35275436 PMCID: PMC9190221 DOI: 10.1002/acr2.11426] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 01/07/2022] [Accepted: 02/01/2022] [Indexed: 12/03/2022] Open
Abstract
Objective Systemic juvenile idiopathic arthritis (sJIA) is characterized by fever, arthritis, rash, hepatosplenomegaly, and macrophage activation syndrome; however, its pathogenesis is still unclear. Elevated serum interleukin (IL)‐18 concentrations and decreased natural killer (NK) cell activity are characteristic of active disease; thus, we examined IL‐18 signaling in NK cells from sJIA. Methods We analyzed mitogen‐activated protein kinase (MAPK) p38 and nuclear factor κ light chain enhancer of activated B cells (NFκB) p65 phosphorylation in NK cells after in vitro recombinant IL‐18 (rIL‐18) stimulation in 31 patients with sJIA. Associations between clinical features, serum IL‐18, and phosphorylation intensity were analyzed. Furthermore, we investigated the effects of high IL‐18 concentrations on phosphorylation in NK cells. Results Patients were divided according to their disease activity: systemic features (n = 8), chronic arthritis (n = 7), remission on medication (n = 10), and remission off medication (n = 6). MAPK p38 and NFκB p65 phosphorylation intensity were the highest in healthy controls, followed by remission off medication, remission on medication (vs. control; MAPK p38, P < 0.01; NFκB p65, P < 0.05), chronic arthritis (P < 0.001, P < 0.001), and systemic features (P < 0.001, P < 0.001). The systemic features group showed a complete defect in phosphorylation. Serum IL‐18 was the highest in the systemic features group followed by chronic arthritis, remission on medication (P < 0.01), remission off medication (P < 0.01), and healthy controls (P < 0.01). Phosphorylation intensity was negatively correlated with serum IL‐18 (MAPK p38, r2 = 0.42; NFκB p65, r2 = 0.54). Furthermore, healthy control NK cells were cultured with rIL‐18; impaired phosphorylation was reproduced in vitro. Conclusion Impaired IL‐18 signaling in NK cells correlated with disease activity in sJIA. High serum IL‐18 exposure induces impaired MAPK and NFκB phosphorylation in NK cells.
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Affiliation(s)
- Takashi Ohya
- Yokohama City University, Yokohama, Kanagawa, Japan
| | | | - Ayako Murase
- Yokohama City University, Yokohama, Kanagawa, Japan
| | | | - Asami Ohara
- Yokohama City University, Yokohama, Kanagawa and Aichi Children's Health and Medical Center, Obu, Aichi, Japan
| | - Tomo Nozawa
- Yokohama City University, Yokohama, Kanagawa, Japan
| | - Ryoki Hara
- Yokohama City University and National Hospital Organization Yokohama Medical Center, Yokohama, Kanagawa, Japan
| | - Shuichi Ito
- Yokohama City University, Yokohama, Kanagawa, Japan
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17
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Malengier-Devlies B, Bernaerts E, Ahmadzadeh K, Filtjens J, Vandenhaute J, Boeckx B, Burton O, De Visscher A, Mitera T, Berghmans N, Verbeke G, Liston A, Lambrechts D, Proost P, Wouters C, Matthys P. Role for Granulocyte Colony-Stimulating Factor in Neutrophilic Extramedullary Myelopoiesis in a Murine Model of Systemic Juvenile Idiopathic Arthritis. Arthritis Rheumatol 2022; 74:1257-1270. [PMID: 35243819 DOI: 10.1002/art.42104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 02/04/2022] [Accepted: 02/27/2022] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Systemic juvenile idiopathic arthritis (JIA) is a systemic inflammatory disease with childhood onset. Systemic JIA is associated with neutrophilia, including immature granulocytes, potentially driven by the growth factor granulocyte-colony stimulating factor (G-CSF). This study was undertaken to investigate the role of G-CSF in the pathology of systemic JIA. METHODS Injection of Freund's complete adjuvant (CFA) in BALB/c mice induces mild inflammation and neutrophilia in wild-type (WT) mice and a more pronounced disease, reminiscent to that of JIA patients, in interferon-γ-knockout (IFNγ-KO) mice. Extramedullary myelopoiesis was studied in CFA-immunized mice by single-cell RNA sequencing, and the effect of G-CSF receptor (G-CSFR) blockage on neutrophil development and systemic JIA pathology was evaluated. Additionally, plasma G-CSF levels were measured in patients. RESULTS Both in systemic JIA patients and in a corresponding mouse model, plasma G-CSF levels were increased. In the mouse model, we demonstrated that G-CSF is responsible for the observed neutrophilia and extramedullary myelopoiesis and the induction of immature neutrophils and myeloid-derived suppressor-like cells. Administration of a G-CSFR antagonizing antibody blocked the maturation and differentiation of neutrophils in CFA-immunized mice. In IFNγ-KO mice, treatment was associated with almost complete inhibition of arthritis due to reduced neutrophilia and osteoclast formation. Disease symptoms were ameliorated, but slight increases in interleukin-6 (IL-6), tumor necrosis factor, and IL-17 were detected upon G-CSFR inhibition in the IFNγ-KO mice, and were associated with mild increases in weight loss, tail damage, and immature red blood cells. CONCLUSION We describe the role of G-CSF in a mouse model of systemic JIA and suggest an important role for G-CSF-induced myelopoiesis and neutrophilia in regulating the development of arthritis.
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Affiliation(s)
| | | | | | | | | | - Bram Boeckx
- KU Leuven and Vlaams Instituut voor Biotechnolgie-KU Leuven, Leuven, Belgium
| | - Oliver Burton
- KU Leuven and Vlaams Instituut voor Biotechnolgie-KU Leuven, Leuven, Belgium, and the Babraham Institute, Cambridge, UK
| | | | - Tania Mitera
- Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | | | - Geert Verbeke
- Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Adrian Liston
- KU Leuven and Vlaams Instituut voor Biotechnolgie-KU Leuven, Leuven, Belgium, and the Babraham Institute, Cambridge, UK
| | - Diether Lambrechts
- KU Leuven and Vlaams Instituut voor Biotechnolgie-KU Leuven, Leuven, Belgium
| | - Paul Proost
- Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Carine Wouters
- KU Leuven, University Hospitals Leuven, and European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases at University Hospital Leuven, Leuven, Belgium
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18
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Harel M, Fauteux-Daniel S, Girard-Guyonvarc'h C, Gabay C. Balance between Interleukin-18 and Interleukin-18 binding protein in auto-inflammatory diseases. Cytokine 2022; 150:155781. [DOI: 10.1016/j.cyto.2021.155781] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 12/03/2021] [Indexed: 02/07/2023]
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19
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Malengier-Devlies B, Metzemaekers M, Wouters C, Proost P, Matthys P. Neutrophil Homeostasis and Emergency Granulopoiesis: The Example of Systemic Juvenile Idiopathic Arthritis. Front Immunol 2021; 12:766620. [PMID: 34966386 PMCID: PMC8710701 DOI: 10.3389/fimmu.2021.766620] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 11/23/2021] [Indexed: 12/21/2022] Open
Abstract
Neutrophils are key pathogen exterminators of the innate immune system endowed with oxidative and non-oxidative defense mechanisms. More recently, a more complex role for neutrophils as decision shaping cells that instruct other leukocytes to fine-tune innate and adaptive immune responses has come into view. Under homeostatic conditions, neutrophils are short-lived cells that are continuously released from the bone marrow. Their development starts with undifferentiated hematopoietic stem cells that pass through different immature subtypes to eventually become fully equipped, mature neutrophils capable of launching fast and robust immune responses. During severe (systemic) inflammation, there is an increased need for neutrophils. The hematopoietic system rapidly adapts to this increased demand by switching from steady-state blood cell production to emergency granulopoiesis. During emergency granulopoiesis, the de novo production of neutrophils by the bone marrow and at extramedullary sites is augmented, while additional mature neutrophils are rapidly released from the marginated pools. Although neutrophils are indispensable for host protection against microorganisms, excessive activation causes tissue damage in neutrophil-rich diseases. Therefore, tight regulation of neutrophil homeostasis is imperative. In this review, we discuss the kinetics of neutrophil ontogenesis in homeostatic conditions and during emergency myelopoiesis and provide an overview of the different molecular players involved in this regulation. We substantiate this review with the example of an autoinflammatory disease, i.e. systemic juvenile idiopathic arthritis.
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Affiliation(s)
- Bert Malengier-Devlies
- Department of Microbiology, Immunology and Transplantation, Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Mieke Metzemaekers
- Department of Microbiology, Immunology and Transplantation, Laboratory of Molecular Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Carine Wouters
- Department of Microbiology, Immunology and Transplantation, Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.,Division of Pediatric Rheumatology, University Hospitals Leuven, Leuven, Belgium.,European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at University Hospital Leuven, Leuven, Belgium
| | - Paul Proost
- Department of Microbiology, Immunology and Transplantation, Laboratory of Molecular Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Patrick Matthys
- Department of Microbiology, Immunology and Transplantation, Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
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20
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Targeting interferon-γ in hyperinflammation: opportunities and challenges. Nat Rev Rheumatol 2021; 17:678-691. [PMID: 34611329 DOI: 10.1038/s41584-021-00694-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2021] [Indexed: 02/08/2023]
Abstract
Interferon-γ (IFNγ) is a pleiotropic cytokine with multiple effects on the inflammatory response and on innate and adaptive immunity. Overproduction of IFNγ underlies several, potentially fatal, hyperinflammatory or immune-mediated diseases. Several data from animal models and/or from translational research in patients point to a role of IFNγ in hyperinflammatory diseases, such as primary haemophagocytic lymphohistiocytosis, various forms of secondary haemophagocytic lymphohistiocytosis, including macrophage activation syndrome, and cytokine release syndrome, all of which are often managed by rheumatologists or in consultation with rheumatologists. Given the effects of IFNγ on B cells and T follicular helper cells, a role for IFNγ in systemic lupus erythematosus pathogenesis is emerging. To improve our understanding of the role of IFNγ in human disease, IFNγ-related biomarkers that are relevant for the management of hyperinflammatory diseases are progressively being identified and studied, especially because circulating levels of IFNγ do not always reflect its overproduction in tissue. These biomarkers include STAT1 (specifically the phosphorylated form), neopterin and the chemokine CXCL9. IFNγ-neutralizing agents have shown efficacy in the treatment of primary haemophagocytic lymphohistiocytosis in clinical trials and initial promising results have been obtained in various forms of secondary haemophagocytic lymphohistiocytosis, including macrophage activation syndrome. In clinical practice, there is a growing body of evidence supporting the usefulness of circulating CXCL9 levels as a biomarker reflecting IFNγ production.
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21
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Verweyen EL, Schulert GS. Interfering with interferons: targeting the JAK-STAT pathway in complications of systemic juvenile idiopathic arthritis (SJIA). Rheumatology (Oxford) 2021; 61:926-935. [PMID: 34459891 PMCID: PMC9123899 DOI: 10.1093/rheumatology/keab673] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/27/2021] [Accepted: 08/23/2021] [Indexed: 02/06/2023] Open
Abstract
Systemic JIA (SJIA) is distinguished from other forms of JIA by the prevalence of the severe, life-threatening complications macrophage activation syndrome (SJIA-MAS) and lung disease (SJIA-LD). Alternative therapeutics are urgently needed, as disease pathogenesis diverges from what is observed in SJIA, and currently available biologics are insufficient. SJIA-MAS, defined by a cytokine storm and dysregulated proliferation of T-lymphocytes, and SJIA-LD which presents with lymphocytic interstitial inflammation and pulmonary alveolar proteinosis, are both thought to be driven by IFNs, in particular the type II IFN-γ. Involvement of IFNs and a possible crosstalk of type I IFNs with existing biologics indicate a distinct role for the JAK-STAT signalling pathway in the pathogenesis of SJIA-MAS and SJIA-LD. Here, we review this role of JAK-STATs and IFNs in SJIA complications and discuss how new insights of ongoing research are shaping future therapeutic advances in the form of JAK inhibitors and antibodies targeting IFNs.
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Affiliation(s)
- Emely L Verweyen
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center
| | - Grant S Schulert
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Correspondence to: Grant Schulert, Division of Rheumatology, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, MLC 4010, 3333 Burnet Avenue, Cincinnati, OH 45208, USA.
E-mail:
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Application of Weighted Gene Coexpression Network Analysis to Identify Key Modules and Hub Genes in Systemic Juvenile Idiopathic Arthritis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9957569. [PMID: 34435051 PMCID: PMC8382540 DOI: 10.1155/2021/9957569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/22/2021] [Indexed: 12/14/2022]
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a severe autoinflammatory disorder with a still not clearly defined molecular mechanism. To better understand the disease, we used scattered datasets from public domains and performed a weighted gene coexpression network analysis (WGCNA) to identify key modules and hub genes underlying sJIA pathogenesis. Two gene expression datasets, GSE7753 and GSE13501, were used to construct the WGCNA. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were applied to the genes and hub genes in the sJIA modules. Cytoscape was used to screen and visualize the hub genes. We further compared the hub genes with the genome-wide association study (GWAS) genes and used a consensus WGCNA to verify that our conclusions were conservative and reproducible across multiple independent datasets. A total of 5,414 genes were obtained for WGCNA, from which highly correlated genes were divided into 17 modules. The red module demonstrated the highest correlation with the sJIA module (r = 0.8, p = 3e−29), whereas the green-yellow module was found to be closely related to the non-sJIA module (r = 0.62, p = 1e−14). Functional enrichment analysis demonstrated that the red module was mostly enriched in the activation of immune responses, infection, nucleosomes, and erythrocytes, and the green-yellow module was mostly enriched in immune responses and inflammation. Additionally, the hub genes in the red module were highly enriched in erythrocyte differentiation, including ALAS2, AHSP, TRIM10, TRIM58, and KLF1. The hub genes from the green-yellow module were mainly associated with immune responses, as exemplified by the genes KLRB1, KLRF1, CD160, and KIRs. We identified sJIA-related modules and several hub genes that might be associated with the development of sJIA. Particularly, the modules may help understand the mechanisms of sJIA, and the hub genes may become biomarkers and therapeutic targets of sJIA in the future.
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Zandstra J, Jongerius I, Kuijpers TW. Future Biomarkers for Infection and Inflammation in Febrile Children. Front Immunol 2021; 12:631308. [PMID: 34079538 PMCID: PMC8165271 DOI: 10.3389/fimmu.2021.631308] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/12/2021] [Indexed: 01/08/2023] Open
Abstract
Febrile patients, suffering from an infection, inflammatory disease or autoimmunity may present with similar or overlapping clinical symptoms, which makes early diagnosis difficult. Therefore, biomarkers are needed to help physicians form a correct diagnosis and initiate the right treatment to improve patient outcomes following first presentation or admittance to hospital. Here, we review the landscape of novel biomarkers and approaches of biomarker discovery. We first discuss the use of current plasma parameters and whole blood biomarkers, including results obtained by RNA profiling and mass spectrometry, to discriminate between bacterial and viral infections. Next we expand upon the use of biomarkers to distinguish between infectious and non-infectious disease. Finally, we discuss the strengths as well as the potential pitfalls of current developments. We conclude that the use of combination tests, using either protein markers or transcriptomic analysis, have advanced considerably and should be further explored to improve current diagnostics regarding febrile infections and inflammation. If proven effective when combined, these biomarker signatures will greatly accelerate early and tailored treatment decisions.
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Affiliation(s)
- Judith Zandstra
- Division Research and Landsteiner Laboratory, Department of Immunopathology, Sanquin Blood Supply, Amsterdam University Medical Center (UMC), Amsterdam, Netherlands
- Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children’s Hospital, Amsterdam UMC, Amsterdam, Netherlands
| | - Ilse Jongerius
- Division Research and Landsteiner Laboratory, Department of Immunopathology, Sanquin Blood Supply, Amsterdam University Medical Center (UMC), Amsterdam, Netherlands
- Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children’s Hospital, Amsterdam UMC, Amsterdam, Netherlands
| | - Taco W. Kuijpers
- Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children’s Hospital, Amsterdam UMC, Amsterdam, Netherlands
- Division Research and Landsteiner Laboratory, Department of Blood Cell Research, Sanquin Blood Supply, Amsterdam UMC, Amsterdam, Netherlands
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Abstract
Macrophage activation syndrome (MAS) is a severe, potentially life-threatening complication of systemic juvenile idiopathic arthritis (s-JIA). An immunological feature is the excessive activation and proliferation of T lymphocytes and macrophages. Massive hypercytokinemia is strongly associated with its pathogenesis, particularly the overproduction of interleukin (IL)-1, IL-6 and IL-18; interferon (IFN)-γ; and tumor necrosis factor (TNF)-α. Furthermore, heterozygous mutations in causative genes for primary hemophagocytic lymphohistiocytosis and in vivo exposure to highly elevated levels of IL-6 and IL-18 might induce natural killer cell dysfunction and decrease their numbers, respectively. A proper diagnosis is important to begin appropriate therapeutic interventions and change an unfavorable prognosis. The 2016 ACR/EULAR classification criteria for MAS have a high diagnostic performance; however, the diagnostic sensitivity for onset is relatively low. Therefore, careful monitoring of laboratory values during the course of MAS is necessary to diagnose it early in s-JIA. Further studies on the diagnosis and monitoring of disease activity using serum cytokine profile and a targeted cytokine strategy are required.
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Affiliation(s)
- Masaki Shimizu
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Interleukin-18 and cytotoxic impairment are independent and synergistic causes of murine virus-induced hyperinflammation. Blood 2021; 136:2162-2174. [PMID: 32589707 DOI: 10.1182/blood.2019003846] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 06/02/2020] [Indexed: 11/20/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) and macrophage activation syndrome (MAS) are life-threatening hyperinflammatory syndromes typically associated with underlying hematologic and rheumatic diseases, respectively. Familial HLH is associated with genetic cytotoxic impairment and thereby to excessive antigen presentation. Extreme elevation of serum interleukin-18 (IL-18) has been observed specifically in patients with MAS, making it a promising therapeutic target, but how IL-18 promotes hyperinflammation remains unknown. In an adjuvant-induced MAS model, excess IL-18 promoted immunopathology, whereas perforin deficiency had no effect. To determine the effects of excess IL-18 on virus-induced immunopathology, we infected Il18-transgenic (Il18tg) mice with lymphocytic choriomeningitis virus (LCMV; strain Armstrong). LCMV infection is self-limited in wild-type mice, but Prf1-/- mice develop prolonged viremia and fatal HLH. LCMV-infected Il18-transgenic (Il18tg) mice developed cachexia and hyperinflammation comparable to Prf1-/- mice, albeit with minimal mortality. Like Prf1-/- mice, immunopathology was largely rescued by CD8 depletion or interferon-γ (IFNg) blockade. Unlike Prf1-/- mice, they showed normal target cell killing and normal clearance of viral RNA and antigens. Rather than impairing cytotoxicity, excess IL-18 acted on T lymphocytes to amplify their inflammatory responses. Surprisingly, combined perforin deficiency and transgenic IL-18 production caused spontaneous hyperinflammation specifically characterized by CD8 T-cell expansion and improved by IFNg blockade. Even Il18tg;Prf1-haplosufficient mice demonstrated hyperinflammatory features. Thus, excess IL-18 promotes hyperinflammation via an autoinflammatory mechanism distinct from, and synergistic with, cytotoxic impairment. These data establish IL-18 as a potent, independent, and modifiable driver of life-threatening innate and adaptive hyperinflammation and support the rationale for an IL-18-driven subclass of hyperinflammation.
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Functional and genetic testing in adults with HLH reveals an inflammatory profile rather than a cytotoxicity defect. Blood 2021; 136:542-552. [PMID: 32356861 DOI: 10.1182/blood.2019003664] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 03/23/2020] [Indexed: 12/23/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening hyperinflammatory condition. Primary HLH occurs early in life as a result of monogenic biallelic mutations affecting lymphocyte cytotoxicity. Secondary HLH occurs mostly in adults secondary to infection, lymphoma, or rheumatic disease. In this latter setting, lymphocyte cytotoxicity status is not known. We conducted a systematic evaluation of natural killer (NK) cell cytotoxicity in adult patients with secondary HLH. Adult patients with secondary HLH were prospectively studied ex vivo for total lymphocyte count and subtype, NK cell phenotype, perforin expression and degranulation, and natural or antibody-dependent cell cytotoxicity, in comparison with patients affected by the same underlying disease without HLH (disease controls [DCs]) and with healthy controls (HCs). Screening for variants of cytotoxity genes was systematically performed. 68 patients were included in the HLH group and 34 each in the DC and HC groups. In HLH patients, severe and transient lymphopenia, activated NK cell phenotype (eg, increased CD69, ICAM-1, HLADR, and CCR5 expression), and decreased capacity of interferon γ production were observed; mean perforin expression was normal; and degranulation tests and NK cell cytotoxicity were not different from those in DCs. A monoallelic variant of uncertain significance affecting a lymphocyte cytotoxicity gene or the perforin variant A91V was observed in almost 50% of the patients. We detected no major intrinsic cytotoxicity dysfunction in secondary HLH patients compared with DCs and no predicted pathogenic gene variant. The activated NK phenotype profile associated with decreased interferon γ production seems similar to those of other hyperinflammatory diseases such as sepsis or systemic juvenile idiopathic arthritis.
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Malengier-Devlies B, Decaesteker T, Dekoster K, Vanstapel A, Ahmadzadeh K, Poosti F, Mitera T, Seldeslachts L, Verbeken E, Wouters C, Vande Velde G, Vanoirbeek J, Matthys P. Lung Functioning and Inflammation in a Mouse Model of Systemic Juvenile Idiopathic Arthritis. Front Immunol 2021; 12:642778. [PMID: 33777039 PMCID: PMC7996094 DOI: 10.3389/fimmu.2021.642778] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/10/2021] [Indexed: 11/13/2022] Open
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is an immune disorder characterized by fever, skin rash, arthritis and splenomegaly. Recently, increasing number of sJIA patients were reported having lung disease. Here, we explored lung abnormalities in a mouse model for sJIA relying on injection of IFN-γ deficient (IFN-γ KO) mice with complete Freund's adjuvant (CFA). Monitoring of lung changes during development of sJIA using microcomputer tomography revealed a moderate enlargement of lungs, a decrease in aerated and increase in non-aerated lung density. When lung function and airway reactivity to methacholine was assessed, gender differences were seen. While male mice showed an increased tissue hysteresivity, female animals were characterized by an increased airway hyperactivity, mirroring ongoing inflammation. Histologically, lungs of sJIA-like mice showed subpleural and parenchymal cellular infiltrates and formation of small granulomas. Flow cytometric analysis identified immature and mature neutrophils, and activated macrophages as major cell infiltrates. Lung inflammation in sJIA-like mice was accompanied by augmented expression of IL-1β and IL-6, two target cytokines in the treatment of sJIA. The increased expression of granulocyte colony stimulating factor, a potent inducer of granulopoiesis, in lungs of mice was striking considering the observed neutrophilia in patients. We conclude that development of sJIA in a mouse model is associated with lung inflammation which is distinct to the lung manifestations seen in sJIA patients. Our observations however underscore the importance of monitoring lung disease during systemic inflammation and the model provides a tool to explore the underlying mechanism of lung pathology in an autoinflammatory disease context.
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Affiliation(s)
- Bert Malengier-Devlies
- Laboratory of Immunobiology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Tatjana Decaesteker
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Kaat Dekoster
- Biomedical MRI, Department of Imaging & Pathology, KU Leuven, Leuven, Belgium
| | - Arno Vanstapel
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Fariba Poosti
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Tania Mitera
- Laboratory of Immunobiology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Laura Seldeslachts
- Biomedical MRI, Department of Imaging & Pathology, KU Leuven, Leuven, Belgium
| | - Erik Verbeken
- Morphology and Molecular Pathology Section, University Hospitals Leuven, Leuven, Belgium
| | - Carine Wouters
- Laboratory of Immunobiology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Division of Pediatric Rheumatology, University Hospitals Leuven, Leuven, Belgium.,European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at University Hospital Leuven, Leuven, Belgium
| | - Greetje Vande Velde
- Biomedical MRI, Department of Imaging & Pathology, KU Leuven, Leuven, Belgium
| | - Jeroen Vanoirbeek
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
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Betrains A, Staels F, Schrijvers R, Meyts I, Humblet-Baron S, De Langhe E, Wouters C, Blockmans D, Vanderschueren S. Systemic autoinflammatory disease in adults. Autoimmun Rev 2021; 20:102774. [PMID: 33609798 DOI: 10.1016/j.autrev.2021.102774] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 12/17/2022]
Abstract
Systemic autoinflammatory disorders comprise an expanding group of rare conditions. They are mediated by dysfunction of the innate immune system and share a core of phenotypic manifestations including recurrent attacks of fever, cutaneous signs, chest or abdominal pain, lymphadenopathy, vasculopathy, and musculoskeletal symptoms. Diagnosis is often established in childhood, but a growing number of adult patients are being recognized with systemic autoinflammatory disorders, including adult-onset disease. In this review, we provide a concise update on the pathophysiology, clinical presentation, and diagnostic approach of systemic autoinflammatory disorders with an emphasis on the adult patient population. Despite the recent advances in genetic testing, the diagnosis of autoinflammatory disease in adult patients is often based on a thorough knowledge of the clinical phenotype. Becoming acquainted with the clinical features of these rare disorders may assist in developing a high index of suspicion for autoinflammatory disease in patients presenting with unexplained episodes of fever or inflammation.
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Affiliation(s)
- Albrecht Betrains
- Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology, and Transplantation, Laboratory of Clinical Infectious and Inflammatory Disorders, Leuven, Belgium.
| | - Frederik Staels
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Immunogenetics Research Group, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, Leuven, Belgium
| | - Rik Schrijvers
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Immunogenetics Research Group, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, Leuven, Belgium
| | - Isabelle Meyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory for Inborn Errors of Immunity, Leuven, Belgium
| | - Stephanie Humblet-Baron
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Immunogenetics Research Group, Leuven, Belgium
| | - Ellen De Langhe
- Department of Rheumatology, University Hospitals Leuven, Leuven, Belgium; KU Leuven, Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, Leuven, Belgium
| | - Carine Wouters
- Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology & Immunobiology, Leuven, Belgium
| | - Daniel Blockmans
- Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology, and Transplantation, Laboratory of Clinical Infectious and Inflammatory Disorders, Leuven, Belgium
| | - Steven Vanderschueren
- Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology, and Transplantation, Laboratory of Clinical Infectious and Inflammatory Disorders, Leuven, Belgium
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29
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Tomaras S, Goetzke CC, Kallinich T, Feist E. Adult-Onset Still's Disease: Clinical Aspects and Therapeutic Approach. J Clin Med 2021; 10:733. [PMID: 33673234 PMCID: PMC7918550 DOI: 10.3390/jcm10040733] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/27/2021] [Accepted: 02/07/2021] [Indexed: 12/22/2022] Open
Abstract
Adult-onset Still's disease (AoSD) is a rare systemic autoinflammatory disease characterized by arthritis, spiking fever, skin rash and elevated ferritin levels. The reason behind the nomenclature of this condition is that AoSD shares certain symptoms with Still's disease in children, currently named systemic-onset juvenile idiopathic arthritis. Immune dysregulation plays a central role in AoSD and is characterized by pathogenic involvement of both arms of the immune system. Furthermore, the past two decades have seen a large body of immunological research on cytokines, which has attributed to both a better understanding of AoSD and revolutionary advances in treatment. Additionally, recent studies have introduced a new approach by grouping patients with AoSD into only two phenotypes: one with predominantly systemic features and one with a chronic articular disease course. Diagnosis presupposes an extensive diagnostic workup to rule out infections and malignancies. The severe end of the spectrum of this disease is secondary haemophagocytic lymphohistiocytosis, better known as macrophage activation syndrome. In this review, we discuss current research conducted on the pathogenesis, diagnosis, classification, biomarkers and complications of AoSD, as well as the treatment strategy at each stage of the disease course. We also highlight the similarities and differences between AoSD and systemic-onset juvenile idiopathic arthritis. There is a considerable need for large multicentric prospective trials.
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Affiliation(s)
- Stylianos Tomaras
- Department of Rheumatology, Helios Clinic Vogelsang-Gommern, 39245 Gommern, Germany;
| | - Carl Christoph Goetzke
- Department of Pediatrics, Division of Pulmonology, Immunology and Critical Care Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), 10117 Berlin, Germany; (C.C.G.); (T.K.)
- German Rheumatism Research Center (DRFZ), Leibniz Association, 10117 Berlin, Germany
- Berlin Institute of Health, 10178 Berlin, Germany
| | - Tilmann Kallinich
- Department of Pediatrics, Division of Pulmonology, Immunology and Critical Care Medicine, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), 10117 Berlin, Germany; (C.C.G.); (T.K.)
- German Rheumatism Research Center (DRFZ), Leibniz Association, 10117 Berlin, Germany
- Berlin Institute of Health, 10178 Berlin, Germany
| | - Eugen Feist
- Department of Rheumatology, Helios Clinic Vogelsang-Gommern, 39245 Gommern, Germany;
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30
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Kim D, Song J, Lee S, Jung J, Jang W. An Integrative Transcriptomic Analysis of Systemic Juvenile Idiopathic Arthritis for Identifying Potential Genetic Markers and Drug Candidates. Int J Mol Sci 2021; 22:ijms22020712. [PMID: 33445803 PMCID: PMC7828236 DOI: 10.3390/ijms22020712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/02/2021] [Accepted: 01/07/2021] [Indexed: 12/20/2022] Open
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a rare subtype of juvenile idiopathic arthritis, whose clinical features are systemic fever and rash accompanied by painful joints and inflammation. Even though sJIA has been reported to be an autoinflammatory disorder, its exact pathogenesis remains unclear. In this study, we integrated a meta-analysis with a weighted gene co-expression network analysis (WGCNA) using 5 microarray datasets and an RNA sequencing dataset to understand the interconnection of susceptibility genes for sJIA. Using the integrative analysis, we identified a robust sJIA signature that consisted of 2 co-expressed gene sets comprising 103 up-regulated genes and 25 down-regulated genes in sJIA patients compared with healthy controls. Among the 128 sJIA signature genes, we identified an up-regulated cluster of 11 genes and a down-regulated cluster of 4 genes, which may play key roles in the pathogenesis of sJIA. We then detected 10 bioactive molecules targeting the significant gene clusters as potential novel drug candidates for sJIA using an in silico drug repositioning analysis. These findings suggest that the gene clusters may be potential genetic markers of sJIA and 10 drug candidates can contribute to the development of new therapeutic options for sJIA.
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Föll D, Wittkowski H, Hinze C. [Still's disease as biphasic disorder : Current knowledge on pathogenesis and novel treatment approaches]. Z Rheumatol 2020; 79:639-648. [PMID: 32253510 DOI: 10.1007/s00393-020-00779-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Still's disease covers a range of disorders from systemic juvenile idiopathic arthritis (SJIA) up to adult onset Still's disease (AOSD). The overlapping clinical features suggest that SJIA and AOSD are different manifestations of a phenotypic continuum in different age stages. Still's disease is clinically characterized by fever, rash, joint involvement, lymphadenopathy and serositis. In this review the more recent pathogenetic model of a biphasic disease course is presented. The initial autoinflammation with predominant dysregulation of innate immunity is the basis of the "window of opportunity" hypothesis for the early use of a cytokine blockade. If the disease is not stopped in this phase, a phenotype change to a disease with destructive arthritis regularly occurs, in which dysregulation of the mechanisms of adaptive immunity plays a special role. The understanding of Still's disease as a biphasic disease enables the monitoring of molecular signatures. At the same time, this opens up perspectives for phase-specific targeted treatment using modern treat-to-target strategies.
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Affiliation(s)
- D Föll
- Klinik für Pädiatrische Rheumatologie und Immunologie, Universitätsklinikum Münster, Domagkstr. 3, 48149, Münster, Deutschland.
| | - H Wittkowski
- Klinik für Pädiatrische Rheumatologie und Immunologie, Universitätsklinikum Münster, Domagkstr. 3, 48149, Münster, Deutschland
| | - C Hinze
- Klinik für Pädiatrische Rheumatologie und Immunologie, Universitätsklinikum Münster, Domagkstr. 3, 48149, Münster, Deutschland
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32
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Canna SW, Cron RQ. Highways to hell: Mechanism-based management of cytokine storm syndromes. J Allergy Clin Immunol 2020; 146:949-959. [PMID: 33007328 PMCID: PMC7522622 DOI: 10.1016/j.jaci.2020.09.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 12/12/2022]
Abstract
Since the first textbook devoted to cytokine storm syndromes (CSSs) was published in 2019, the world has changed dramatically and the term’s visibility has broadened. Herein, we define CSSs broadly to include life/organ-threatening systemic inflammation and immunopathology regardless of the context in which it occurs, recognizing that the indistinct borders of such a definition limit its utility. Nevertheless, we are focused on the pathomechanisms leading to CSSs, including impairment of granule-mediated cytotoxicity, specific viral infections, excess IL-18, and chimeric antigen receptor T-cell therapy. These mechanisms are often reflected in distinct clinical features, functional tests, and/or biomarker assessments. Moreover, these mechanisms often indicate specific, definitive treatments. This mechanism-focused organization is vital to both advancing the field and understanding the complexities in individual patients. However, increasing evidence suggests that these mechanisms interact and overlap. Likewise, the utility of a broad term such as “cytokine storm” is that it reflects a convergence on a systemic inflammatory phenotype that, regardless of cause or context, may be amenable to “inflammo-stabilization.” CSS research must improve our appreciation of its various mechanisms and their interactions and treatments, but it must also identify the signs and interventions that may broadly prevent CSS-induced immunopathology.
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Affiliation(s)
- Scott W Canna
- University of Pittsburgh/UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pa.
| | - Randy Q Cron
- University of Alabama, Birmingham/Children's of Alabama, Birmingham, Ala
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Ailioaie LM, Litscher G. Molecular and Cellular Mechanisms of Arthritis in Children and Adults: New Perspectives on Applied Photobiomodulation. Int J Mol Sci 2020; 21:E6565. [PMID: 32911717 PMCID: PMC7554967 DOI: 10.3390/ijms21186565] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022] Open
Abstract
Juvenile idiopathic arthritis and adult rheumatoid arthritis are two major groups with chronic joint pain and inflammation, extra-articular manifestations, and high risk of comorbidities, which can cause physical and ocular disability, as well as create great socio-economic pressure worldwide. The pathogenesis of arthritis manifested in childhood and adulthood is multifactorial, unclear, and overly complex, in which immunity plays an important role. Although there are more and more biological agents with different mechanisms of action for the treatment of arthritis, the results are not as expected, because there are partial responses or non-responsive patients to these compounds, high therapeutic costs, side effects, and so on; therefore, we must turn our attention to other therapeutic modalities. Updating knowledge on molecular and cellular mechanisms in the comparative pathogenesis of chronic arthritis in both children and adults is necessary in the early and correct approach to treatment. Photobiomodulation (PBM) represents a good option, offering cost-effective advantages over drug therapy, with a quicker, more positive response to treatment and no side effects. The successful management of PBM in arthritis is based on the clinician's ability to evaluate correctly the inflammatory status of the patient, to seek the optimal solution, to choose the best technology with the best physical parameters, and to select the mode of action to target very precisely the immune system and the molecular signaling pathways at the molecular level with the exact amount of quantum light energy in order to obtain the desired immune modulation and the remission of the disease. Light is a very powerful tool in medicine because it can simultaneously target many cascades of immune system activation in comparison with drugs, so PBM can perform very delicate tasks inside our cells to modulate cellular dysfunctions, helping to initiate self-organization phenomena and finally, healing the disease. Interdisciplinary teams should work diligently to meet these needs by also using single-cell imaging devices for multispectral laser photobiomodulation on immune cells.
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Affiliation(s)
- Laura Marinela Ailioaie
- Department of Medical Physics, Alexandru Ioan Cuza University, 11 Carol I Boulevard, 700506 Iaşi, Romania;
- Ultramedical & Laser Clinic, 83 Arcu Street, 700135 Iaşi, Romania
| | - Gerhard Litscher
- Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine, Research Unit for Complementary and Integrative Laser Medicine, and Traditional Chinese Medicine (TCM) Research Center Graz, Medical University of Graz, Auenbruggerplatz 39, 8036 Graz, Austria
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34
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Prada-Medina CA, Peron JPS, Nakaya HI. Immature neutrophil signature associated with the sexual dimorphism of systemic juvenile idiopathic arthritis. J Leukoc Biol 2020; 108:1319-1327. [PMID: 32794262 DOI: 10.1002/jlb.6ma0720-015rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 07/08/2020] [Accepted: 01/13/2020] [Indexed: 12/30/2022] Open
Abstract
Juvenile idiopathic arthritis (JIA) is a group of inflammatory conditions of unknown etiology whose incidence is sex dependent. Although several studies have attempted to identify JIA-related gene signatures, none have systematically assessed the impact of sex on the whole blood transcriptomes of JIA patients. By analyzing over 400 unique pediatric gene expression profiles, we characterized the sexual differences in leukocyte composition of systemic JIA patients and identified sex-specific gene signatures that were related to immature neutrophils. Female systemic JIA patients presented higher activation of immature neutrophil-related genes compared to males, and these genes were associated with the response to IL-1 receptor blockade treatment. Also, we found that this immature neutrophil signature is sexually dimorphic across human lifespan and in adults with rheumatoid arthritis and asthma. These results suggest that neutrophil maturation is sexually dimorphic in rheumatic inflammation, and that this may impact disease progression and treatment.
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Affiliation(s)
- Cesar Augusto Prada-Medina
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Jean Pierre Schatzmann Peron
- Department of Immunology, University of São Paulo, São Paulo, Brazil.,Scientific Platform Pasteur-USP, University of São Paulo, São Paulo, Brazil
| | - Helder I Nakaya
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.,Scientific Platform Pasteur-USP, University of São Paulo, São Paulo, Brazil
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35
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Macrophage Activation Syndrome in Childhood Inflammatory Disorders: Diagnosis, Genetics, Pathophysiology, and Treatment. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2020. [DOI: 10.1007/s40674-020-00153-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Ter Haar NM, Jansen MHA, Frenkel JF, Vastert SJ. How autoinflammation may turn into autoimmune inflammation: Insights from monogenetic and complex IL-1 mediated auto-inflammatory diseases. Clin Immunol 2020; 219:108538. [PMID: 32681980 DOI: 10.1016/j.clim.2020.108538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 06/14/2020] [Accepted: 07/08/2020] [Indexed: 12/12/2022]
Abstract
IL-1 mediated auto-inflammatory diseases are characterised by episodes of unexplained fever, generalized and localized inflammation. The characteristic symptoms predominantly result from exaggerated activation of innate immune pathways. However, in some patients with typical IL-1 mediated diseases, chronic disease manifestations develop in the absence of acute inflammation, suggesting the involvement of adaptive immune pathways. We discuss clinical observations as well as novel insights in how chronic activation of innate immune pathways can lead to auto-immune disease features in patients with auto-inflammatory diseases and how we need to better understand these sequelae in order to improve treatment strategies.
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Affiliation(s)
- N M Ter Haar
- Department of Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands; Center for Translational Immunology (CTI), University Medical Center Utrecht, Utrecht, the Netherlands
| | - M H A Jansen
- Department of Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - J F Frenkel
- Department of Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - S J Vastert
- Department of Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands; Center for Translational Immunology (CTI), University Medical Center Utrecht, Utrecht, the Netherlands.
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37
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Jung JY, Kim HA. The Role of Natural Killer Cells in Inflammation in Active Adult-onset Still Disease. J Rheumatol 2020; 46:1253-1255. [PMID: 31575733 DOI: 10.3899/jrheum.190369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ju-Yang Jung
- Department of Rheumatology, Ajou University Medical School
| | - Hyoun-Ah Kim
- Department of Rheumatology, Ajou University Medical School, Suwon, Korea.
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38
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Griffin G, Shenoi S, Hughes GC. Hemophagocytic lymphohistiocytosis: An update on pathogenesis, diagnosis, and therapy. Best Pract Res Clin Rheumatol 2020; 34:101515. [PMID: 32387063 DOI: 10.1016/j.berh.2020.101515] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a rare, life-threatening state of immune hyperactivation that arises in the setting of genetic mutations and infectious, inflammatory, or neoplastic triggers. Sustained, aberrant activation of cytotoxic CD8+ T cells and resultant inflammatory cytokine release are core pathogenic mechanisms. Key clinical features include high persistent fever, hepatosplenomegaly, blood cytopenia, elevated aminotransferase and ferritin levels, and coagulopathy. HLH is likely under-recognized, and mortality remains high, especially in adults; thus, prompt diagnosis and treatment are essential. Familial forms of HLH are currently treated with chemotherapy as a bridge to hematopoietic stem cell transplantation. HLH occurring in rheumatic disease (macrophage activation syndrome) is treated with glucocorticoids, IL-1 blockade, or cyclosporine A. In other forms of HLH, addressing the underlying trigger is essential. There remains a pressing need for more sensitive, context-specific diagnostic tools. Safer, more effective therapies will arise with improved understanding of the cellular and molecular mechanisms of HLH.
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Affiliation(s)
- Georgia Griffin
- Division of Rheumatology, Seattle Children's Hospital, Seattle, WA, USA.
| | - Susan Shenoi
- Division of Rheumatology, Seattle Children's Hospital, Seattle, WA, USA
| | - Grant C Hughes
- Division of Rheumatology, University of Washington, Seattle, WA, USA
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39
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Shan L, Li S, Meeldijk J, Blijenberg B, Hendriks A, van Boxtel KJWM, van den Berg SPH, Groves IJ, Potts M, Svrlanska A, Stamminger T, Wills MR, Bovenschen N. Killer cell proteases can target viral immediate-early proteins to control human cytomegalovirus infection in a noncytotoxic manner. PLoS Pathog 2020; 16:e1008426. [PMID: 32282833 PMCID: PMC7179929 DOI: 10.1371/journal.ppat.1008426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 04/23/2020] [Accepted: 02/21/2020] [Indexed: 12/17/2022] Open
Abstract
Human cytomegalovirus (HCMV) is the most frequent viral cause of congenital defects and can trigger devastating disease in immune-suppressed patients. Cytotoxic lymphocytes (CD8+ T cells and NK cells) control HCMV infection by releasing interferon-γ and five granzymes (GrA, GrB, GrH, GrK, GrM), which are believed to kill infected host cells through cleavage of intracellular death substrates. However, it has recently been demonstrated that the in vivo killing capacity of cytotoxic T cells is limited and multiple T cell hits are required to kill a single virus-infected cell. This raises the question whether cytotoxic lymphocytes can use granzymes to control HCMV infection in a noncytotoxic manner. Here, we demonstrate that (primary) cytotoxic lymphocytes can block HCMV dissemination independent of host cell death, and interferon-α/β/γ. Prior to killing, cytotoxic lymphocytes induce the degradation of viral immediate-early (IE) proteins IE1 and IE2 in HCMV-infected cells. Intriguingly, both IE1 and/or IE2 are directly proteolyzed by all human granzymes, with GrB and GrM being most efficient. GrB and GrM cleave IE1 after Asp398 and Leu414, respectively, likely resulting in IE1 aberrant cellular localization, IE1 instability, and functional impairment of IE1 to interfere with the JAK-STAT signaling pathway. Furthermore, GrB and GrM cleave IE2 after Asp184 and Leu173, respectively, resulting in IE2 aberrant cellular localization and functional abolishment of IE2 to transactivate the HCMV UL112 early promoter. Taken together, our data indicate that cytotoxic lymphocytes can also employ noncytotoxic ways to control HCMV infection, which may be explained by granzyme-mediated targeting of indispensable viral proteins during lytic infection. Human cytomegalovirus (HCMV) is the leading viral cause of congenital defects, can trigger disease in immune-compromised patients, and plays roles in cancer development. Cytotoxic lymphocytes kill HCMV-infected cells via releasing a set of five cytotoxic serine proteases called granzymes. However, the killing capacity of cytotoxic cells is limited and multiple T cell hits are required to kill a single virus-infected cell. This raises the question whether cytotoxic lymphocytes can use granzymes to control HCMV infection in a noncytotoxic manner. Here, we show that cytotoxic lymphocytes can also use granzymes to inhibit HCMV replication in absence of cell death. All five granzymes cleave and inactivate both viral immediate-early (IE1/2) proteins, which are essential players for initiating HCMV infection. Our data support the model that cytotoxic cells employ granzymes to dampen HCMV replication prior to accumulation of sufficient hits to kill the infected cell.
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Affiliation(s)
- Liling Shan
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Shuang Li
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jan Meeldijk
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Bernadet Blijenberg
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Astrid Hendriks
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | - Ian J. Groves
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Martin Potts
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Adriana Svrlanska
- Institute of Clinical and Molecular Virology, University of Erlangen-Nuremberg, Erlangen, Germany
| | | | - Mark R. Wills
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Niels Bovenschen
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- * E-mail:
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40
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Vandenhaute J, Wouters CH, Matthys P. Natural Killer Cells in Systemic Autoinflammatory Diseases: A Focus on Systemic Juvenile Idiopathic Arthritis and Macrophage Activation Syndrome. Front Immunol 2020; 10:3089. [PMID: 32010140 PMCID: PMC6974473 DOI: 10.3389/fimmu.2019.03089] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
Natural killer (NK) cells are innate immune lymphocytes with potent cytolytic and immune-regulatory activities. NK cells are well-known for their ability to kill infected and malignant cells in a fast and non-specific way without prior sensitization. For this purpose, NK cells are equipped with a set of cytotoxic molecules such as perforin and apoptosis-inducing proteins. NK cells also have the capacity to produce large amounts of cytokines and chemokines that synergize with their cytotoxic function and that ensure interaction with other immune cells. A less known feature of NK cells is their capacity to kill non-infected autologous cells, such as immature dendritic cells and activated T cells and monocytes. Via the release of large amounts of TNF-α and IFN-γ, NK cells may contribute to disease pathology. Conversely they may exert a regulatory role through secretion of immuno-regulatory cytokines such as GM-CSF, IL-13, and IL-10. Thus, NK cells may be important target and effector cells in the pathogenesis of autoinflammatory diseases, in particular in those disorders associated with a cytokine storm or in conditions where immune cells are highly activated. Key examples of such diseases are systemic juvenile idiopathic arthritis (sJIA) and its well-associated complication, macrophage activation syndrome (MAS). sJIA is a chronic childhood immune disorder of unknown etiology, characterized by arthritis and systemic inflammation, including a daily spiking fever and evanescent rash. MAS is a potentially fatal complication of autoimmune and autoinflammatory diseases, and most prevalently associated with sJIA. MAS is considered as a subtype of hemophagocytic lymphohistiocytosis (HLH), a systemic hyperinflammatory disorder characterized by defective cytotoxic pathways of cytotoxic T and NK cells. In this review, we describe the established features of NK cells and provide the results of a literature survey on the reported NK cell abnormalities in monogenic and multifactorial autoinflammatory disorders. Finally, we discuss the role of NK cells in the pathogenesis of sJIA and MAS.
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Affiliation(s)
- Jessica Vandenhaute
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
| | - Carine H Wouters
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.,UZ Leuven, Leuven, Belgium.,European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at University Hospital Leuven, Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
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41
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Kessel C, Hedrich CM, Foell D. Innately Adaptive or Truly Autoimmune: Is There Something Unique About Systemic Juvenile Idiopathic Arthritis? Arthritis Rheumatol 2020; 72:210-219. [PMID: 31524322 DOI: 10.1002/art.41107] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 09/10/2019] [Indexed: 12/11/2022]
Abstract
Systemic juvenile idiopathic arthritis (JIA) is a form of arthritis in childhood that is initially dominated by innate immunity-driven systemic inflammation and is thus considered a polygenic autoinflammatory disease. However, systemic JIA can progress toward an adaptive immunity-driven afebrile arthritis. Based on this observation of biphasic disease progression, a "window of opportunity" for optimal, individualized and target-directed treatment has been proposed. This hypothesis requires testing, and in this review we summarize current evidence regarding molecular factors that may contribute to the progression from an initially predominantly autoinflammatory disease phenotype to autoimmune arthritis. We consider the involvement of innately adaptive γδ T cells and natural killer T cells that express γδ or αβ T cell receptors but cannot be classified as either purely innate or adaptive cells, versus classic B and T lymphocytes in this continuum. Finally, we discuss our understanding of how and why some primarily autoinflammatory conditions can progress toward autoimmune-mediated disorders over the disease course while others do not and how this knowledge may be used to offer individualized treatment.
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42
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Vandenhaute J, Avau A, Filtjens J, Malengier-Devlies B, Imbrechts M, Van den Berghe N, Ahmadzadeh K, Mitera T, Boon L, Leclercq G, Wouters C, Matthys P. Regulatory Role for NK Cells in a Mouse Model of Systemic Juvenile Idiopathic Arthritis. THE JOURNAL OF IMMUNOLOGY 2019; 203:3339-3348. [PMID: 31676671 DOI: 10.4049/jimmunol.1900510] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 10/04/2019] [Indexed: 12/14/2022]
Abstract
Mice deficient in IFN-γ (IFN-γ knockout [KO] mice) develop a systemic inflammatory syndrome in response to CFA, in contrast to CFA-challenged wild-type (WT) mice who only develop a mild inflammation. Symptoms in CFA-challenged IFN-γ KO resemble systemic juvenile idiopathic arthritis (sJIA), a childhood immune disorder of unknown cause. Dysregulation of innate immune cells is considered to be important in the disease pathogenesis. In this study, we used this murine model to investigate the role of NK cells in the pathogenesis of sJIA. NK cells of CFA-challenged IFN-γ KO mice displayed an aberrant balance of activating and inhibitory NK cell receptors, lower expression of cytotoxic proteins, and a defective NK cell cytotoxicity. Depletion of NK cells (via anti-IL-2Rβ and anti-Asialo-GM1 Abs) or blockade of the NK cell activating receptor NKG2D in CFA-challenged WT mice resulted in increased severity of systemic inflammation and appearance of sJIA-like symptoms. NK cells of CFA-challenged IFN-γ KO mice and from anti-NKG2D-treated mice showed defective degranulation capacities toward autologous activated immune cells, predominantly monocytes. This is in line with the increased numbers of activated inflammatory monocytes in these mice which was particularly reflected in the expression of CCR2, a chemokine receptor, and in the expression of Rae-1, a ligand for NKG2D. In conclusion, NK cells are defective in a mouse model of sJIA and impede disease development in CFA-challenged WT mice. Our findings point toward a regulatory role for NK cells in CFA-induced systemic inflammation via a NKG2D-dependent control of activated immune cells.
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Affiliation(s)
- Jessica Vandenhaute
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Anneleen Avau
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Jessica Filtjens
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Bert Malengier-Devlies
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Maya Imbrechts
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Nathalie Van den Berghe
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Tania Mitera
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | | | - Georges Leclercq
- Department of Clinical Chemistry, Microbiology and Immunology, Ghent University, 9000 Ghent, Belgium; and
| | - Carine Wouters
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium.,Division of Pediatric Rheumatology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium;
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43
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Systemic juvenile idiopathic arthritis and macrophage activation syndrome: update on pathogenesis and treatment. Curr Opin Rheumatol 2019; 30:514-520. [PMID: 29870499 DOI: 10.1097/bor.0000000000000526] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE OF REVIEW The past decade has seen substantial progress in defining the cause and pathogenesis of the chronic childhood arthropathy systemic juvenile idiopathic arthritis (SJIA) and its related complication macrophage activation syndrome (MAS). The purpose of this review is to describe and synthesize advances in this field, particularly since 2016, with the potential to transform clinical practice. RECENT FINDINGS Newly developed MAS classification criteria have been further studied and validated in other diseases and populations, as well as a recently proposed score to distinguish MAS from familial hemophagocytic lymphohistiocytosis. There has also been substantial progress toward understanding the genetic underpinnings of SJIA and MAS, both through targeted study of specific genes and the results of a large genome-wide association study. The immunopathogenesis of SJIA has been further elucidated through several studies regarding the proinflammatory cytokines interleukin-18, interferon (IFN)γ, and how their interplay impacts emergence of MAS. Finally, big data studies integrating genomic information with immunophenotypes have potential to provide novel insights into disease mechanisms in SJIA. SUMMARY Collectively, these research advances have significant implications regarding the classification and diagnosis of SJIA and MAS, and support a next generation of biologic treatments including kinase inhibitors and targeted interleukin-18 or IFNγ blockade.
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44
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Tay SH, Yaung KN, Leong JY, Yeo JG, Arkachaisri T, Albani S. Immunomics in Pediatric Rheumatic Diseases. Front Med (Lausanne) 2019; 6:111. [PMID: 31231652 PMCID: PMC6558393 DOI: 10.3389/fmed.2019.00111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/03/2019] [Indexed: 02/04/2023] Open
Abstract
The inherent complexity in the immune landscape of pediatric rheumatic disease necessitates a holistic system approach. Uncertainty in the mechanistic workings and etiological driving forces presents difficulty in personalized treatments. The development and progression of immunomics are well suited to deal with this complexity. Immunomics encompasses a spectrum of biological processes that entail genomics, transcriptomics, epigenomics, proteomics, and cytomics. In this review, we will discuss how various high dimensional technologies in immunomics have helped to grow a wealth of data that provide salient clues and biological insights into the pathogenesis of autoimmunity. Interfaced with critical unresolved clinical questions and unmet medical needs, these platforms have helped to identify candidate immune targets, refine patient stratification, and understand treatment response or resistance. Yet the unprecedented growth in data has presented both opportunities and challenges. Researchers are now facing huge heterogeneous data sets from different origins that need to be integrated and exploited for further data mining. We believe that the utilization and integration of these platforms will help unravel the complexities and expedite both discovery and validation of clinical targets.
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Affiliation(s)
| | | | - Jing Yao Leong
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
| | - Joo Guan Yeo
- Duke-NUS Medical School, Singapore, Singapore.,Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore.,Rheumatology and Immunology Service, Department of Pediatric Subspecialties, KK Women's and Children's Hospital, Singapore, Singapore
| | - Thaschawee Arkachaisri
- Duke-NUS Medical School, Singapore, Singapore.,Rheumatology and Immunology Service, Department of Pediatric Subspecialties, KK Women's and Children's Hospital, Singapore, Singapore
| | - Salvatore Albani
- Duke-NUS Medical School, Singapore, Singapore.,Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore.,Rheumatology and Immunology Service, Department of Pediatric Subspecialties, KK Women's and Children's Hospital, Singapore, Singapore
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45
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Abstract
Hyperferritinemia and pronounced hemophagocytosis help distinguish a subset of patients with a particularly inflammatory and deadly systemic inflammatory response syndrome. Two clinically similar disorders typify these hyperferritinemic syndromes: hemophagocytic lymphohistiocytosis (HLH) and macrophage activation syndrome (MAS). HLH is canonically associated with a complete disturbance of perforin/granzyme-mediated cytotoxicity, whereas MAS occurs in the context of the related rheumatic diseases systemic juvenile idiopathic arthritis and adult-onset Still's disease, with associated IL-1 family cytokine activation. In practice, however, there are accumulating lines of evidence for innate immune dysregulation in HLH as well as partial impairments of cytotoxicity in MAS, and these mechanisms likely represent only a fraction of the host and environmental factors driving hyperferritinemic inflammation. Herein, we present new findings that highlight the pathogenic differences between HLH and MAS, two conditions that present with life-threatening hyperinflammation, hyperferritinemia and hemophagocytosis.
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Affiliation(s)
- Grant S Schulert
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Scott W Canna
- RK Mellon Institute for Pediatric Research, Pittsburgh, PA, USA
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46
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Behrens EM, Koretzky GA. Review: Cytokine Storm Syndrome: Looking Toward the Precision Medicine Era. Arthritis Rheumatol 2019; 69:1135-1143. [PMID: 28217930 DOI: 10.1002/art.40071] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 02/09/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Edward M Behrens
- Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia
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47
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Abstract
Juvenile idiopathic arthritis (JIA) is a chronic childhood arthritis. Its pathogenesis is very complicated, with the involvement of not only immune cells but various types of parenchymal cells, and is affected by both genetic and environmental predispositions. The clinical spectrum from inflammation to related conditions is largely mediated by cytokines including interleukin (IL)-6. Fluctuations in IL-6 and its related molecules can modulate the pathogenesis and the clinical presentation positively or negatively. The recent clinical impact of IL-6 blockade on JIA has begun a therapeutic paradigm shift. This review describes the characteristics of JIA, mainly focused on IL-6 with the current therapeutic perspective.
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Affiliation(s)
- Shinji Akioka
- a Department of Pediatrics , Kyoto Prefectural University of Medicine , Kyoto , Japan
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48
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Leong JY, Guan YJ, Albani S, Arkachaisri T. Recent advances in our understanding of the pathogenesis of juvenile idiopathic arthritis and their potential clinical implications. Expert Rev Clin Immunol 2018; 14:933-944. [PMID: 30269617 DOI: 10.1080/1744666x.2018.1529757] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Juvenile idiopathic arthritis (JIA) comprises systemic and non-systemic forms of chronic childhood arthritis diagnosed prior to age 16. Significant improvement in treatment outcomes has been witnessed since the introduction of biologics. In particular, advances in research in the area of multidimensional interrogation and network analysis have facilitated understanding of the complex cacophony of components orchestrating disease immunopathogenesis. Areas covered: In this review, we will examine the scientific advances that have augmented our understanding of JIA pathogenesis, focusing on the progress made in systemic, poly, and oligo JIA in four major aspects: (a) unraveling the pathogenic mechanisms, (b) disease classification, (c) therapeutic selection, and (d) decision for withdrawal of medications after achieving remission. Expert commentary: Dysregulation of innate immune cell physiology and function in sJIA will be highlighted. MicroRNAs contribute to monocyte/macrophage polarization with resulting consequences on macrophage activation syndrome development. The involvement of neutrophils, a major source of S100A8/9/12, in the active inflammatory phase of sJIA is compelling. In non-sJIA, circulating CD4 subsets in T effector and regulatory compartments possessing a strong synovial T-cell receptor coverage and disease activity correlation, acted as an accessible reservoir of pathogenic cells exploitable for clinical management.
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Affiliation(s)
- Jing Yao Leong
- a Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre , Singapore
| | - Yeo Joo Guan
- a Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre , Singapore.,b Rheumatology and Immunology Service, Department of Pediatric Subspecialties , KK Women's and Children's Hospital , Singapore.,c Duke-NUS Medical School , Singapore
| | - Salvatore Albani
- a Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre , Singapore.,b Rheumatology and Immunology Service, Department of Pediatric Subspecialties , KK Women's and Children's Hospital , Singapore.,c Duke-NUS Medical School , Singapore
| | - Thaschawee Arkachaisri
- b Rheumatology and Immunology Service, Department of Pediatric Subspecialties , KK Women's and Children's Hospital , Singapore.,c Duke-NUS Medical School , Singapore
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49
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Imbrechts M, Avau A, Vandenhaute J, Malengier-Devlies B, Put K, Mitera T, Berghmans N, Burton O, Junius S, Liston A, de Somer L, Wouters C, Matthys P. Insufficient IL-10 Production as a Mechanism Underlying the Pathogenesis of Systemic Juvenile Idiopathic Arthritis. THE JOURNAL OF IMMUNOLOGY 2018; 201:2654-2663. [PMID: 30266771 DOI: 10.4049/jimmunol.1800468] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 08/24/2018] [Indexed: 12/22/2022]
Abstract
Systemic juvenile idiopathic arthritis (sJIA) is a childhood-onset immune disorder of unknown cause. One of the concepts is that the disease results from an inappropriate control of immune responses to an initially harmless trigger. In the current study, we investigated whether sJIA may be caused by defects in IL-10, a key cytokine in controlling inflammation. We used a translational approach, with an sJIA-like mouse model and sJIA patient samples. The sJIA mouse model relies on injection of CFA in IFN-γ-deficient BALB/c mice; corresponding wild type (WT) mice only develop a subtle and transient inflammatory reaction. Diseased IFN-γ-deficient mice showed a defective IL-10 production in CD4+ regulatory T cells, CD19+ B cells, and CD3-CD122+CD49b+ NK cells, with B cells as the major source of IL-10. In addition, neutralization of IL-10 in WT mice resulted in a chronic immune inflammatory disorder clinically and hematologically reminiscent of sJIA. In sJIA patients, IL-10 plasma levels were strikingly low as compared with proinflammatory mediators. Furthermore, CD19+ B cells from sJIA patients showed a decreased IL-10 production, both ex vivo and after in vitro stimulation. In conclusion, IL-10 neutralization in CFA-challenged WT mice converts a transient inflammatory reaction into a chronic disease and represents an alternative model for sJIA in IFN-γ-competent mice. Cell-specific IL-10 defects were observed in sJIA mice and patients, together with an insufficient IL-10 production to counterbalance their proinflammatory cytokines. Our data indicate that a defective IL-10 production contributes to the pathogenesis of sJIA.
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Affiliation(s)
- Maya Imbrechts
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Anneleen Avau
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Jessica Vandenhaute
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Bert Malengier-Devlies
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Karen Put
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Tania Mitera
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Nele Berghmans
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium
| | - Oliver Burton
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Steffie Junius
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Adrian Liston
- KU Leuven, Laboratory of Genetics of Autoimmunity, VIB Center for Brain and Disease Research, 3000 Leuven, Belgium; and
| | - Lien de Somer
- University Hospital Leuven, Laboratory of Pediatric Immunology, 3000 Leuven, Belgium
| | - Carine Wouters
- University Hospital Leuven, Laboratory of Pediatric Immunology, 3000 Leuven, Belgium
| | - Patrick Matthys
- KU Leuven, Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium;
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Heremans J, Garcia-Perez JE, Turro E, Schlenner SM, Casteels I, Collin R, de Zegher F, Greene D, Humblet-Baron S, Lesage S, Matthys P, Penkett CJ, Put K, Stirrups K, Thys C, Van Geet C, Van Nieuwenhove E, Wouters C, Meyts I, Freson K, Liston A. Abnormal differentiation of B cells and megakaryocytes in patients with Roifman syndrome. J Allergy Clin Immunol 2018; 142:630-646. [DOI: 10.1016/j.jaci.2017.11.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 10/28/2017] [Accepted: 11/06/2017] [Indexed: 12/12/2022]
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