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Tiberio L, Laffranchi M, Zucchi G, Salvi V, Schioppa T, Sozzani S, Del Prete A, Bosisio D. Inhibitory receptors of plasmacytoid dendritic cells as possible targets for checkpoint blockade in cancer. Front Immunol 2024; 15:1360291. [PMID: 38504978 PMCID: PMC10948453 DOI: 10.3389/fimmu.2024.1360291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/22/2024] [Indexed: 03/21/2024] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are the major producers of type I interferons (IFNs), which are essential to mount antiviral and antitumoral immune responses. To avoid exaggerated levels of type I IFNs, which pave the way to immune dysregulation and autoimmunity, pDC activation is strictly regulated by a variety of inhibitory receptors (IRs). In tumors, pDCs display an exhausted phenotype and correlate with an unfavorable prognosis, which largely depends on the accumulation of immunosuppressive cytokines and oncometabolites. This review explores the hypothesis that tumor microenvironment may reduce the release of type I IFNs also by a more pDC-specific mechanism, namely the engagement of IRs. Literature shows that many cancer types express de novo, or overexpress, IR ligands (such as BST2, PCNA, CAECAM-1 and modified surface carbohydrates) which often represent a strong predictor of poor outcome and metastasis. In line with this, tumor cells expressing ligands engaging IRs such as BDCA-2, ILT7, TIM3 and CD44 block pDC activation, while this blocking is prevented when IR engagement or signaling is inhibited. Based on this evidence, we propose that the regulation of IFN secretion by IRs may be regarded as an "innate checkpoint", reminiscent of the function of "classical" adaptive immune checkpoints, like PD1 expressed in CD8+ T cells, which restrain autoimmunity and immunopathology but favor chronic infections and tumors. However, we also point out that further work is needed to fully unravel the biology of tumor-associated pDCs, the neat contribution of pDC exhaustion in tumor growth following the engagement of IRs, especially those expressed also by other leukocytes, and their therapeutic potential as targets of combined immune checkpoint blockade in cancer immunotherapy.
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Affiliation(s)
- Laura Tiberio
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Mattia Laffranchi
- Department of Molecular Medicine, Laboratory Affiliated to Institute Pasteur-Italia, Sapienza University of Rome, Rome, Italy
| | - Giovanni Zucchi
- Department of Molecular Medicine, Laboratory Affiliated to Institute Pasteur-Italia, Sapienza University of Rome, Rome, Italy
| | - Valentina Salvi
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Tiziana Schioppa
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- IRCCS Humanitas Research Hospital, Milan, Italy
| | - Silvano Sozzani
- Department of Molecular Medicine, Laboratory Affiliated to Institute Pasteur-Italia, Sapienza University of Rome, Rome, Italy
- IRCCS Neuromed, Pozzilli, IS, Italy
| | - Annalisa Del Prete
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- IRCCS Humanitas Research Hospital, Milan, Italy
| | - Daniela Bosisio
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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2
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Lu J, Lu Y. Paradoxical psoriasis: The flip side of idiopathic psoriasis or an autocephalous reversible drug reaction? J Transl Autoimmun 2023; 7:100211. [PMID: 37731549 PMCID: PMC10507642 DOI: 10.1016/j.jtauto.2023.100211] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/21/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023] Open
Abstract
Psoriasis is a common, chronic skin disease that results mainly from the complex interplay between T cells, dendritic cells, and inflammatory cytokines including TNF-α, IL-17, IL-12, and IL-23. Successful therapy with anti-cytokine antibodies has proved the importance of these key cytokines, especially TNF-α. During the anti-TNF-α treatment of classical idiopathic psoriasis, a small portion of patients develop new psoriasiform lesions. This contradictory phenomenon was named paradoxical psoriasis which resembles idiopathic psoriasis clinically but presents overlapped histological patterns and distinct immunological processes. In this review, we discuss the differences between idiopathic psoriasis and paradoxical psoriasis with an emphasis on their innate immunity, as it is predominant in paradoxical psoriasis which exhibits type I IFN-mediated immunity without the activation of autoreactive T cells and memory T cells. We also put up an instructive algorithm for the management of paradoxical psoriasis. The decision on drug discontinuation or switching of biologics should be made based on the condition of underlying diseases and the severity of lesions.
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Affiliation(s)
- Jiawei Lu
- Department of Dermatology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, PR China
| | - Yan Lu
- Department of Dermatology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, PR China
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3
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Ebrahimi Chaharom F, Ebrahimi AA, Feghhi Koochebagh F, Babalou Z, Ghojazadeh M, Aghebati Maleki L, Nader ND. Association of IL-17 serum levels with clinical findings and systemic lupus erythematosus disease activity index. Immunol Med 2023; 46:175-181. [PMID: 37073815 DOI: 10.1080/25785826.2023.2202050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/08/2023] [Indexed: 04/20/2023] Open
Abstract
The current study aims to investigate the relationship betweSen serum IL-17 (IL-17) levels and systemic lupus erythematosus disease activity index (SLE-DAEI) in systemic lupus erythematosus (SLE) patients. In this case-control study, 36 patients with SLE and 40 healthy individuals matched for age and sex were included as the control group. The study measured serum IL-17 in both groups. The correlation between serum IL-17 with disease activity (as per SLE-DAI) and organ involvement in SLE patients. The case group in this study consisted of 4 males and 32 females with a mean age of 35 (17-54) years old, and the control group included six males and 34 females with a mean age of 37 (25-53) years old (p = .35). Serum IL-17 was higher in the cases than in the controls (536 pg/mL vs. 110 pg/mL; p < .001). There was a positive correlation between the serum levels of IL-17 and disease activity index (p < .001, rho = 0.93) among cases. Additionally, the serum levels of IL-17 were higher in patients with renal (p = .003) or central nervous system involvement (p < .001) than in patients without such involvement. Serum Il-17 is associated with SLE, and its serum levels correlate positively with the disease activity and renal and nervous system involvement.
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Affiliation(s)
- Faegheh Ebrahimi Chaharom
- Department of Anesthesiology, University at Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - Ali Asghar Ebrahimi
- Department of Internal Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Zohreh Babalou
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Morteza Ghojazadeh
- Research Development and Coordination Center (RDCC), Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Nader D Nader
- Department of Anesthesiology, University at Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
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4
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Spinelli FR, Berti R, Farina G, Ceccarelli F, Conti F, Crescioli C. Exercise-induced modulation of Interferon-signature: a therapeutic route toward management of Systemic Lupus Erythematosus. Autoimmun Rev 2023; 22:103412. [PMID: 37597604 DOI: 10.1016/j.autrev.2023.103412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
Systemic Lupus Erythematosus (SLE) is a multisystemic autoimmune disorder characterized by flares-ups/remissions with a complex clinical picture related to disease severity and organ/tissue injury, which, if left untreated, may result in permanent damage. Enhanced fatigue and pain perception, worsened quality of life (QoL) and outcome are constant, albeit symptoms may differ. An aberrant SLE immunoprofiling, note as "interferon (IFN)α-signature", is acknowledged to break immunotolerance. Recently, a deregulated "IFNγ-signature" is suggested to silently precede/trigger IFNα profile before clinical manifestations. IFNα- and IFNγ-over-signaling merge in cytokine/chemokine overexpression exacerbating autoimmunity. Remission achievement and QoL improvement are the main goals. The current therapy (i.e., corticosteroids, immunosuppressants) aims to downregulate immune over-response. Exercise could be a safe treatment due to its ever-emerging ability to shape and re-balance immune system without harmful side-effects; in addition, it improves cardiorespiratory capacity and musculoskeletal strength/power, usually impaired in SLE. Nevertheless, exercise is not yet included in SLE care plans. Furthermore, due to the fear to worsening pain/fatigue, SLE subjects experience kinesiophobia and sedentary lifestyle, worsening physical health. Training SLE patients to exercise is mandatory to fight inactive behavior and ameliorate health. This review aims to focus the attention on the role of exercise as a non-pharmacological therapy in SLE, considering its ability to mitigate IFN-signature and rebalance (auto)immune response. To this purpose, the significance of IFNα- and IFNγ-signaling in SLE etiopathogenesis will be addressed first and discussed thereafter as biotarget of exercise. Comments are addressed on the need to make aware all SLE care professional figures to promote exercise for health patients.
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Affiliation(s)
- Francesca Romana Spinelli
- Sapienza Università di Roma, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari-Reumatologia, Roma, Italy
| | - Riccardo Berti
- University of Rome Foro Italico, Department of Movement, Human and Health Sciences, Rome, Italy
| | - Gabriele Farina
- University of Rome Foro Italico, Department of Movement, Human and Health Sciences, Rome, Italy
| | - Fulvia Ceccarelli
- Sapienza Università di Roma, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari-Reumatologia, Roma, Italy
| | - Fabrizio Conti
- Sapienza Università di Roma, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari-Reumatologia, Roma, Italy
| | - Clara Crescioli
- University of Rome Foro Italico, Department of Movement, Human and Health Sciences, Rome, Italy.
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5
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Guo X, He C, Xin S, Gao H, Wang B, Liu X, Zhang S, Gong F, Yu X, Pan L, Sun F, Xu J. Current perspective on biological properties of plasmacytoid dendritic cells and dysfunction in gut. Immun Inflamm Dis 2023; 11:e1005. [PMID: 37773693 PMCID: PMC10510335 DOI: 10.1002/iid3.1005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/27/2023] [Accepted: 08/30/2023] [Indexed: 10/01/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs), a subtype of DC, possess unique developmental, morphological, and functional traits that have sparked much debate over the years whether they should be categorized as DCs. The digestive system has the greatest mucosal tissue overall, and the pDC therein is responsible for shaping the adaptive and innate immunity of the gastrointestinal tract, resisting pathogen invasion through generating type I interferons, presenting antigens, and participating in immunological responses. Therefore, its alleged importance in the gut has received a lot of attention in recent years, and a fresh functional overview is still required. Here, we summarize the current understanding of mouse and human pDCs, ranging from their formation and different qualities compared with related cell types to their functional characteristics in intestinal disorders, including colon cancer, infections, autoimmune diseases, and intestinal graft-versus-host disease. The purpose of this review is to convey our insights, demonstrate the limits of existing research, and lay a theoretical foundation for the rational development and use of pDCs in future clinical practice.
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Affiliation(s)
- Xueran Guo
- Department of Clinical Medicine, Beijing An Zhen HospitalCapital Medical UniversityBeijingChina
| | - Chengwei He
- Department of Physiology and Pathophysiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Shuzi Xin
- Department of Physiology and Pathophysiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Han Gao
- Department of Physiology and Pathophysiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
- Department of Clinical Laboratory, Aerospace Center HospitalPeking UniversityBeijingChina
| | - Boya Wang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing)Peking University Cancer Hospital & InstituteBeijingChina
| | - Xiaohui Liu
- Department of Physiology and Pathophysiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Sitian Zhang
- Department of Clinical Medicine, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Fengrong Gong
- Department of Clinical Medicine, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Xinyi Yu
- Department of Clinical Medicine, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Luming Pan
- Department of Clinical Medicine, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Fangling Sun
- Department of Laboratory Animal Research, Xuan Wu HospitalCapital Medical UniversityBeijingChina
| | - Jingdong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
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6
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Pan Y, Yang W, Tang B, Wang X, Zhang Q, Li W, Li L. The protective and pathogenic role of Th17 cell plasticity and function in the tumor microenvironment. Front Immunol 2023; 14:1192303. [PMID: 37457739 PMCID: PMC10339829 DOI: 10.3389/fimmu.2023.1192303] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023] Open
Abstract
At the turn of the century, researchers discovered a unique subtype of T helper cells that secretes IL-17 and defined it as Th17. The latest study found that Th17 cells play both positive and negative definitive roles in the regulation of antitumor immune responses. Although the function of Th17 in the tumor microenvironment remains poorly understood, more and more studies have shown that this paradoxical dual role is closely related to the plasticity of Th17 cells in recent decades. Further understanding of the characteristics of Th17 cells in the tumor microenvironment could yield novel and useful therapeutic approaches to treat cancer. In this review, we further present the high plasticity of Th17 cells and the function of Th17-producing IL-17 in tumor immunity.
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7
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Sutanto H, Yuliasih Y. Disentangling the Pathogenesis of Systemic Lupus Erythematosus: Close Ties between Immunological, Genetic and Environmental Factors. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1033. [PMID: 37374237 DOI: 10.3390/medicina59061033] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023]
Abstract
Systemic Lupus Erythematosus (SLE) is a systemic autoimmune disease that attacks various organ systems with a variety of clinical implications, ranging from mild skin and mucosal manifestations to severe central nervous system manifestations and death. Cases of SLE have been documented nearly two centuries ago when scholars used the terms 'erythema centrifugum' and 'seborrhea congestiva' to describe the discoid skin lesions and the butterfly or malar rash in SLE. Since then, knowledge about this disease has developed rapidly, especially knowledge related to the underlying pathogenesis of SLE. To date, it is known that immune system dysregulation, supported by genetic and environmental predisposition, can trigger the occurrence of SLE in a group of susceptible individuals. Various inflammatory mediators, cytokines and chemokines, as well as intra- and intercellular signaling pathways, are involved in the pathogenesis of SLE. In this review, we will discuss the molecular and cellular aspects of SLE pathogenesis, with a focus on how the immune system, genetics and the environment interact and trigger the various clinical manifestations of SLE.
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Affiliation(s)
- Henry Sutanto
- Department of Internal Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
- Department of Internal Medicine, Dr. Soetomo General Academic Hospital, Surabaya 60286, Indonesia
| | - Yuliasih Yuliasih
- Department of Internal Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
- Department of Internal Medicine, Dr. Soetomo General Academic Hospital, Surabaya 60286, Indonesia
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
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8
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Bradford HF, Haljasmägi L, Menon M, McDonnell TCR, Särekannu K, Vanker M, Peterson P, Wincup C, Abida R, Gonzalez RF, Bondet V, Duffy D, Isenberg DA, Kisand K, Mauri C. Inactive disease in patients with lupus is linked to autoantibodies to type I interferons that normalize blood IFNα and B cell subsets. Cell Rep Med 2023; 4:100894. [PMID: 36652906 PMCID: PMC9873953 DOI: 10.1016/j.xcrm.2022.100894] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/28/2022] [Accepted: 12/13/2022] [Indexed: 01/18/2023]
Abstract
Systemic lupus erythematosus (SLE) is characterized by increased expression of type I interferon (IFN)-regulated genes in 50%-75% of patients. We report that out of 501 patients with SLE analyzed, 73 (14%) present autoantibodies against IFNα (anti-IFN-Abs). The presence of neutralizing-anti-IFN-Abs in 4.2% of patients inversely correlates with low circulating IFNα protein levels, inhibition of IFN-I downstream gene signatures, and inactive global disease score. Hallmarks of SLE pathogenesis, including increased immature, double-negative plasmablast B cell populations and reduction in regulatory B cell (Breg) frequencies, were normalized in patients with neutralizing anti-IFN-Abs compared with other patient groups. Immunoglobulin G (IgG) purified from sera of patients with SLE with neutralizing anti-IFN-Abs impedes CpGC-driven IFNα-dependent differentiation of B cells into immature B cells and plasmablasts, thus recapitulating the neutralizing effect of anti-IFN-Abs on B cell differentiation in vitro. Our findings highlight a role for neutralizing anti-IFN-Abs in controlling SLE pathogenesis and support the use of IFN-targeting therapies in patients with SLE lacking neutralizing-anti-IFN-Abs.
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Affiliation(s)
- Hannah F Bradford
- Division of Infection and Immunity and Institute of Immunity and Transplantation, Royal Free Hospital, University College London, London NW3 2PP, UK; Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK.
| | - Liis Haljasmägi
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Madhvi Menon
- Lydia Becker Institute of Immunology and Inflammation, Division of Infection, Immunity & Respiratory Medicine, School of Biological Sciences, University of Manchester, Manchester M13 9PL, UK.
| | - Thomas C R McDonnell
- Department of Biochemical Engineering, University College London, London WC1E 6BT, UK
| | - Karita Särekannu
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Martti Vanker
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Pärt Peterson
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Chris Wincup
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK
| | - Rym Abida
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK
| | | | - Vincent Bondet
- Translational Immunology Unit, Institut Pasteur, Université Paris Cité, Paris, France
| | - Darragh Duffy
- Translational Immunology Unit, Institut Pasteur, Université Paris Cité, Paris, France
| | - David A Isenberg
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK
| | - Kai Kisand
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia.
| | - Claudia Mauri
- Division of Infection and Immunity and Institute of Immunity and Transplantation, Royal Free Hospital, University College London, London NW3 2PP, UK; Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK.
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9
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Liang H, Kong X, Wang H, Ren Y, Liu E, Sun F, Qi J, Zhang Q, Zhou Y. Elucidating the Heterogeneity of Serum Metabolism in Patients with Myelodysplastic Syndrome and Acute Myeloid Leukemia by Raman Spectroscopy. ACS OMEGA 2022; 7:47056-47069. [PMID: 36570283 PMCID: PMC9773805 DOI: 10.1021/acsomega.2c06170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Myelodysplastic syndrome (MDS) is difficult to diagnose and classify because it has the potential to evolve into acute myeloid leukemia (AML). Raman spectroscopy and orthogonal partial least squares discrimination analysis (OPLS-DA) are used to systematically analyze peripheral blood serum samples from 33 patients with MDS, 25 patients with AML, and 29 control volunteers to gain insight into the heterogeneity of serum metabolism in patients with MDS and AML. AML patients show unique serum spectral data compared to MDS patients with considerably greater peak intensities of collagen (859 and 1345 cm-1) and carbohydrate (920 and 1123 cm-1) compared to MDS patients. Screening and bioinformatics analysis of MDS- and AML-related genes based on the Gene Expression Omnibus (GEO) database shows that 1459 genes are differentially expressed, and the main signaling pathways are related to Th17 cell differentiation, pertussis, and cytokine receptor interaction. Statistical analysis of serological indexes related to glucose and lipid metabolism shows that patients with AML have increased serum triglyceride (TG) levels and decreased total protein levels. This study provides a spectral basis for the relationship between the massive serological data of patients and the typing of MDS and AML and provides important information for the rapid and early identification of MDS and AML.
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Affiliation(s)
- Haoyue Liang
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Xiaodong Kong
- Department
of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Haoyu Wang
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Yansong Ren
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Ertao Liu
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Fanfan Sun
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Jianwei Qi
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Qiang Zhang
- Department
of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yuan Zhou
- State
Key Laboratory of Experimental Hematology, National Clinical Research
Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute
of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
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10
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Stergioti EM, Manolakou T, Boumpas DT, Banos A. Antiviral Innate Immune Responses in Autoimmunity: Receptors, Pathways, and Therapeutic Targeting. Biomedicines 2022; 10:2820. [PMID: 36359340 PMCID: PMC9687478 DOI: 10.3390/biomedicines10112820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 09/28/2023] Open
Abstract
Innate immune receptors sense nucleic acids derived from viral pathogens or self-constituents and initiate an immune response, which involves, among other things, the secretion of cytokines including interferon (IFN) and the activation of IFN-stimulated genes (ISGs). This robust and well-coordinated immune response is mediated by the innate immune cells and is critical to preserving and restoring homeostasis. Like an antiviral response, during an autoimmune disease, aberrations of immune tolerance promote inflammatory responses to self-components, such as nucleic acids and immune complexes (ICs), leading to the secretion of cytokines, inflammation, and tissue damage. The aberrant immune response within the inflammatory milieu of the autoimmune diseases may lead to defective viral responses, predispose to autoimmunity, or precipitate a flare of an existing autoimmune disease. Herein, we review the literature on the crosstalk between innate antiviral immune responses and autoimmune responses and discuss the pitfalls and challenges regarding the therapeutic targeting of the mechanisms involved.
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Affiliation(s)
- Eirini Maria Stergioti
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- School of Medicine, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Theodora Manolakou
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- School of Medicine, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Dimitrios T. Boumpas
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- 4th Department of Internal Medicine, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, 124 62 Athens, Greece
| | - Aggelos Banos
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
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11
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Saulescu I, Ionescu R, Opris-Belinski D. Interferon in systemic lupus erythematosus—A halfway between monogenic autoinflammatory and autoimmune disease. Heliyon 2022; 8:e11741. [DOI: 10.1016/j.heliyon.2022.e11741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/20/2022] [Accepted: 11/10/2022] [Indexed: 11/25/2022] Open
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12
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Bencze D, Fekete T, Pfliegler W, Szöőr Á, Csoma E, Szántó A, Tarr T, Bácsi A, Kemény L, Veréb Z, Pázmándi K. Interactions between the NLRP3-Dependent IL-1β and the Type I Interferon Pathways in Human Plasmacytoid Dendritic Cells. Int J Mol Sci 2022; 23:ijms232012154. [PMID: 36293012 PMCID: PMC9602791 DOI: 10.3390/ijms232012154] [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: 09/06/2022] [Revised: 09/29/2022] [Accepted: 10/04/2022] [Indexed: 11/16/2022] Open
Abstract
Generally, a reciprocal antagonistic interaction exists between the antiviral type I interferon (IFN) and the antibacterial nucleotide-binding oligomerization domain (NOD)-like receptor pyrin domain containing 3 (NLRP3)-dependent IL-1β pathways that can significantly shape immune responses. Plasmacytoid dendritic cells (pDCs), as professional type I IFN-producing cells, are the major coordinators of antiviral immunity; however, their NLRP3-dependent IL-1β secretory pathway is poorly studied. Our aim was to determine the functional activity of the IL-1β pathway and its possible interaction with the type I IFN pathway in pDCs. We found that potent nuclear factor-kappa B (NF-κB) inducers promote higher levels of pro-IL-1β during priming compared to those activation signals, which mainly trigger interferon regulatory factor (IRF)-mediated type I IFN production. The generation of cleaved IL-1β requires certain secondary signals in pDCs and IFN-α or type I IFN-inducing viruses inhibit IL-1β production of pDCs, presumably by promoting the expression of various NLRP3 pathway inhibitors. In line with that, we detected significantly lower IL-1β production in pDCs of psoriasis patients with elevated IFN-α levels. Collectively, our results show that the NLRP3-dependent IL-1β secretory pathway is inducible in pDCs; however, it may only prevail under inflammatory conditions, in which the type I IFN pathway is not dominant.
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Affiliation(s)
- Dóra Bencze
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, 4032 Debrecen, Hungary
| | - Tünde Fekete
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Walter Pfliegler
- Department of Molecular Biotechnology and Microbiology, Faculty of Science and Technology, University of Debrecen, 4032 Debrecen, Hungary
| | - Árpád Szöőr
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Eszter Csoma
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Antónia Szántó
- Division of Clinical Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Tünde Tarr
- Division of Clinical Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Attila Bácsi
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Lajos Kemény
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
| | - Zoltán Veréb
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary
| | - Kitti Pázmándi
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- Correspondence: ; Tel./Fax: +36-52-417-159
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13
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Ryan L, Mills KHG. Sex differences regulate immune responses in experimental autoimmune encephalomyelitis and multiple sclerosis. Eur J Immunol 2021; 52:24-33. [PMID: 34727577 DOI: 10.1002/eji.202149589] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/30/2021] [Accepted: 10/29/2021] [Indexed: 12/26/2022]
Abstract
MS is an autoimmune disease of the CNS that afflicts over 2.5 million people worldwide. There are striking sex differences in the susceptibility to and progression of this disease in humans. Females are twice as likely to develop MS than males, whereas disease progression and disability is more rapid in males compared with females; however, the latter is still controversial. There is growing evidence, mainly from animal models, that innate and adaptive immune responses are different in males and females, and that this can influence the outcome of a range of diseases including infection, cancer, and autoimmunity. Since MS is an immune-mediated disease, sex differences in pathogenic immune responses may account for some of the differences in susceptibility to and progression seen in men versus women. Indeed, data from the mouse model of MS, EAE, have already provided some evidence that female mice have earlier disease onset associated with stronger Th17 responses. This review will discuss the possible immunological basis of sex differences in susceptibility and disease outcome in EAE and MS and how a better understanding of sex differences in the responses to disease-modifying therapies may lead to improved patient treatment.
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Affiliation(s)
- Lucy Ryan
- School of Biochemistry and Immunology, Trinity Biomedical Science Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Kingston H G Mills
- School of Biochemistry and Immunology, Trinity Biomedical Science Institute, Trinity College Dublin, Dublin 2, Ireland
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14
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IgG-Complexed Adenoviruses Induce Human Plasmacytoid Dendritic Cell Activation and Apoptosis. Viruses 2021; 13:v13091699. [PMID: 34578281 PMCID: PMC8472521 DOI: 10.3390/v13091699] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/16/2021] [Accepted: 08/25/2021] [Indexed: 11/16/2022] Open
Abstract
Following repeat exposure to many human adenoviruses (HAdVs), most adults harbour long-lived B- and T-cell responses. Combined, this response typically protects us for years from re-infection by the same HAdV type. In spite of these immune responses, some HAdV types are associated with persistent infections that constitute a life-threatening risk when an individual’s T-cell response is compromised. By contrast, patients with B-cell deficiencies do not appear to be at a greater risk of HAdV disease. This dichotomy begs the question of the secondary role of anti-HAdV antibodies during host defence. In this study, we explored IgG-complexed (IC)-HAdV5 and primary human plasmacytoid dendritic cell (pDC) interactions. We found that IC-HAdV5 are efficiently internalized in pDCs, stimulate their activation through TLR9 signalling, and cause apoptosis. These data may help reconcile the enigma of robust immune response to HAdVs, while concurrently allowing persistence.
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15
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Oner F, Alvarez C, Yaghmoor W, Stephens D, Hasturk H, Firatli E, Kantarci A. Resolvin E1 Regulates Th17 Function and T Cell Activation. Front Immunol 2021; 12:637983. [PMID: 33815391 PMCID: PMC8009993 DOI: 10.3389/fimmu.2021.637983] [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: 12/04/2020] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
Resolvin E1 (RvE1) is a specialized pro-resolving lipid mediator derived from eicosapentaenoic acid and plays a critical role in resolving inflammation and tissue homeostasis. Th17 cells are a distinct group of T helper (Th) cells with tissue-destructive functions in autoimmune and chronic inflammatory diseases via the secretion of IL-17. Dendritic cell (DC)-mediated antigen presentation regulates the Th17-induced progression of inflammation and tissue destruction. In this study, we hypothesized that the RvE1 would restore homeostatic balance and inflammation by targeting the Th17 function. We designed three experiments to investigate the impact of RvE1 on different phases of Th17 response and the potential role of DCs: First CD4+ T cells were induced by IL-6/TGFβ to measure the effect of RvE1 on Th17 differentiation in an inflammatory milieu. Second, we measured the impact of RvE1 on DC-stimulated Th17 differentiation in a co-culture model. Third, we measured the effect of RvE1 on DC maturation. RvE1 blocked the CD25, CCR6 and IL-17 expression; IL-17, IL-21, IL-10, and IL-2 production, suggesting inhibition of T cell activation, Th17 stimulation and chemoattraction. RvE1 also suppressed the activation of DCs by limiting their pro-inflammatory cytokine production. Our findings collectively demonstrated that the RvE1 targeted the Th17 activation and the DC function as a potential mechanism for inflammatory resolution and acquired immune response.
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Affiliation(s)
- Fatma Oner
- The Forsyth Institute, Cambridge, MA, United States.,Department of Periodontology, School of Dentistry, Istanbul University, Istanbul, Turkey
| | - Carla Alvarez
- The Forsyth Institute, Cambridge, MA, United States.,Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Wael Yaghmoor
- The Forsyth Institute, Cambridge, MA, United States.,Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | | | - Erhan Firatli
- Department of Periodontology, School of Dentistry, Istanbul University, Istanbul, Turkey
| | - Alpdogan Kantarci
- The Forsyth Institute, Cambridge, MA, United States.,School of Dental Medicine, Harvard University, Boston, MA, United States
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16
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Psarras A, Antanaviciute A, Alase A, Carr I, Wittmann M, Emery P, Tsokos GC, Vital EM. TNF-α Regulates Human Plasmacytoid Dendritic Cells by Suppressing IFN-α Production and Enhancing T Cell Activation. THE JOURNAL OF IMMUNOLOGY 2021; 206:785-796. [PMID: 33441439 PMCID: PMC7851743 DOI: 10.4049/jimmunol.1901358] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 11/25/2020] [Indexed: 12/29/2022]
Abstract
TNF downregulates IFN-α and TNF production by human pDCs. TNF downregulates IRF7 and NF-κB pathways and upregulates Ag processing in pDCs. TNF enhances Ag presentation and T cell activation properties in pDCs.
Human plasmacytoid dendritic cells (pDCs) play a vital role in modulating immune responses. They can produce massive amounts of type I IFNs in response to nucleic acids via TLRs, but they are also known to possess weak Ag-presenting properties inducing CD4+ T cell activation. Previous studies showed a cross-regulation between TNF-α and IFN-α, but many questions remain about the effect of TNF-α in regulating human pDCs. In this study, we showed that TNF-α significantly inhibited the secretion of IFN-α and TNF-α of TLR-stimulated pDCs. Instead, exogenous TNF-α promoted pDC maturation by upregulating costimulatory molecules and chemokine receptors such as CD80, CD86, HLA-DR, and CCR7. Additionally, RNA sequencing analysis showed that TNF-α inhibited IFN-α and TNF-α production by downregulating IRF7 and NF-κB pathways, while it promoted Ag processing and presentation pathways as well as T cell activation and differentiation. Indeed, TNF-α–treated pDCs induced in vitro higher CD4+ T cell proliferation and activation, enhancing the production of Th1 and Th17 cytokines. In conclusion, TNF-α favors pDC maturation by switching their main role as IFN-α–producing cells to a more conventional dendritic cell phenotype. The functional status of pDCs might therefore be strongly influenced by their overall inflammatory environment, and TNF-α might regulate IFN-α–mediated aspects of a range of autoimmune and inflammatory diseases.
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Affiliation(s)
- Antonios Psarras
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom.,National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, United Kingdom.,Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215; and
| | - Agne Antanaviciute
- Leeds Institute for Data Analytics, University of Leeds, Leeds LS9 7TF, United Kingdom
| | - Adewonuola Alase
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom.,National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, United Kingdom
| | - Ian Carr
- Leeds Institute for Data Analytics, University of Leeds, Leeds LS9 7TF, United Kingdom
| | - Miriam Wittmann
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom.,National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, United Kingdom
| | - Paul Emery
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom.,National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, United Kingdom
| | - George C Tsokos
- Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215; and
| | - Edward M Vital
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds LS7 4SA, United Kingdom; .,National Institute for Health Research Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds LS7 4SA, United Kingdom
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17
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Mousavi MJ, Mahmoudi M, Ghotloo S. Escape from X chromosome inactivation and female bias of autoimmune diseases. Mol Med 2020; 26:127. [PMID: 33297945 PMCID: PMC7727198 DOI: 10.1186/s10020-020-00256-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 12/02/2020] [Indexed: 12/13/2022] Open
Abstract
Generally, autoimmune diseases are more prevalent in females than males. Various predisposing factors, including female sex hormones, X chromosome genes, and the microbiome have been implicated in the female bias of autoimmune diseases. During embryogenesis, one of the X chromosomes in the females is transcriptionally inactivated, in a process called X chromosome inactivation (XCI). This equalizes the impact of two X chromosomes in the females. However, some genes escape from XCI, providing a basis for the dual expression dosage of the given gene in the females. In the present review, the contribution of the escape genes to the female bias of autoimmune diseases will be discussed.
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Affiliation(s)
- Mohammad Javad Mousavi
- Department of Hematology, Faculty of Allied Medicine, Bushehr University of Medical Sciences, Bushehr, Iran.,Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Mahmoudi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Somayeh Ghotloo
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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18
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Psarras A, Alase A, Antanaviciute A, Carr IM, Md Yusof MY, Wittmann M, Emery P, Tsokos GC, Vital EM. Functionally impaired plasmacytoid dendritic cells and non-haematopoietic sources of type I interferon characterize human autoimmunity. Nat Commun 2020; 11:6149. [PMID: 33262343 PMCID: PMC7708979 DOI: 10.1038/s41467-020-19918-z] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 10/28/2020] [Indexed: 12/23/2022] Open
Abstract
Autoimmune connective tissue diseases arise in a stepwise fashion from asymptomatic preclinical autoimmunity. Type I interferons have a crucial role in the progression to established autoimmune diseases. The cellular source and regulation in disease initiation of these cytokines is not clear, but plasmacytoid dendritic cells have been thought to contribute to excessive type I interferon production. Here, we show that in preclinical autoimmunity and established systemic lupus erythematosus, plasmacytoid dendritic cells are not effector cells, have lost capacity for Toll-like-receptor-mediated cytokine production and do not induce T cell activation, independent of disease activity and the blood interferon signature. In addition, plasmacytoid dendritic cells have a transcriptional signature indicative of cellular stress and senescence accompanied by increased telomere erosion. In preclinical autoimmunity, we show a marked enrichment of an interferon signature in the skin without infiltrating immune cells, but with interferon-κ production by keratinocytes. In conclusion, non-hematopoietic cellular sources, rather than plasmacytoid dendritic cells, are responsible for interferon production prior to clinical autoimmunity.
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Affiliation(s)
- Antonios Psarras
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
- National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Adewonuola Alase
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | | | - Ian M Carr
- Leeds Institute for Data Analytics, University of Leeds, Leeds, UK
| | - Md Yuzaiful Md Yusof
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
- National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Miriam Wittmann
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
- National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Paul Emery
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
- National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - George C Tsokos
- Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Edward M Vital
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.
- National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
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19
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Ishikawa M, Mori T, Yamamoto T. Neonatal lupus erythematosus exacerbated by vaccination. J Dermatol 2020; 47:1450-1453. [PMID: 32881039 DOI: 10.1111/1346-8138.15588] [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] [Received: 06/10/2020] [Accepted: 08/05/2020] [Indexed: 01/09/2023]
Abstract
Neonatal lupus erythematosus (LE) is a rare immune-mediated disease caused by placental transport of maternal anti-SSA/Ro, anti-SSB/La and/or anti-U1RNP antibodies. Here, we demonstrate two cases of neonatal LE, in both of which cutaneous LE was exacerbated by inoculation. To our knowledge, cases worsening neonatal LE after administration of vaccines have not been reported. In case 1, not only exacerbation of pre-existing annular erythema but also spreading of new erythematous lesions to the trunk and extremities were induced following vaccination. Of interest, all of the lesions simultaneously improved. By contrast, in case 2, pre-existing facial erythema became prominent without spreading to other sites. The mother of case 1 had Sjögren's syndrome, whereas in case 2, the mother was diagnosed with Sjögren's syndrome on this occasion for the first time. Immunohistochemistry in case 1 revealed interleukin (IL)-17-positive cells infiltrating into the papillary dermis, and CD123-positive plasmacytoid dendritic cells in the papillary dermis and the deep reticular dermis. Both innate immune response and IL-17 mediated inflammation following vaccination are speculated as a possible mechanism of the deterioration of LE lesions in our juvenile cases. Caution is necessary since neonatal LE can be worsened following vaccination.
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Affiliation(s)
- Masato Ishikawa
- Department of Dermatology, Fukushima Medical University, Fukushima, Japan
| | - Tatsuhiko Mori
- Department of Dermatology, Fukushima Medical University, Fukushima, Japan
| | - Toshiyuki Yamamoto
- Department of Dermatology, Fukushima Medical University, Fukushima, Japan
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20
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Ye Y, Gaugler B, Mohty M, Malard F. Plasmacytoid dendritic cell biology and its role in immune-mediated diseases. Clin Transl Immunology 2020; 9:e1139. [PMID: 32489664 PMCID: PMC7248678 DOI: 10.1002/cti2.1139] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 12/26/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique subset of dendritic cells specialised in secreting high levels of type I interferons. pDCs play a crucial role in antiviral immunity and have been implicated in the initiation and development of many autoimmune and inflammatory diseases. This review summarises the latest advances in recent years in several aspects of pDC biology, with special focus on pDC heterogeneity, pDC development via the lymphoid pathway, and newly identified proteins/pathways involved in pDC trafficking, nucleic acid sensing and interferon production. Finally, we also highlight the current understanding of pDC involvement in autoimmunity and alloreactivity, and opportunities for pDC‐targeting therapies in these diseases. These new insights have contributed to answers to several fundamental questions remaining in pDC biology and may pave the way to successful pDC‐targeting therapy in the future.
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Affiliation(s)
- Yishan Ye
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Bone Marrow Transplantation Center The First Affiliated Hospital School of Medicine Zhejiang University Hangzhou China
| | - Béatrice Gaugler
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France
| | - Mohamad Mohty
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Service d'Hématologie Clinique et Thérapie Cellulaire AP-HP, Hôpital Saint-Antoine Sorbonne Université Paris France
| | - Florent Malard
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Service d'Hématologie Clinique et Thérapie Cellulaire AP-HP, Hôpital Saint-Antoine Sorbonne Université Paris France
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21
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The epigenetic face of lupus: Focus on antigen-presenting cells. Int Immunopharmacol 2020; 81:106262. [PMID: 32045873 DOI: 10.1016/j.intimp.2020.106262] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 12/19/2022]
Abstract
In recent years, epigenetic mechanisms became widely known due to their ability to regulate and maintain physiological processes such as cell growth, development, differentiation and genomic stability. When dysregulated, epigenetic mechanisms, may introduce gene expression changes and disturbance in immune homeostasis leading to autoimmune diseases. Systemic lupus erythematosus (SLE), the most extensively studied autoimmune disorder, has already been correlated with epigenetic modifications, especially in T cells. Since these cell rely on antigen presentation, it may be assumed that erroneous activity of antigen-presenting cells (APCs), culminates in T cell abnormalities. In this review we summarize and discuss the epigenetic modifications in SLE affected APCs, with the focus on dendritic cells (DCs), B cells and monocytes. Unravelling this aspect of SLE pathogenesis, might result in identification of new disease biomarkers and putative therapeutic approaches.
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22
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Parent-of-origin differences in DNA methylation of X chromosome genes in T lymphocytes. Proc Natl Acad Sci U S A 2019; 116:26779-26787. [PMID: 31822606 PMCID: PMC6936674 DOI: 10.1073/pnas.1910072116] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Sex differences are naturally occurring disease modifiers that, if understood, could lead to novel targets for drug development. Autoimmune diseases are more prevalent in women than in men, and sex differences in immune responses have been shown in humans and mice. Here, we discover a global parent-of-origin difference in DNA methylation on the X chromosome that affects gene expression in activated CD4+ T lymphocytes. The paternal X has more methylation than the maternal X, with higher expression of X genes in XY cells since they only express from the maternal X. Thus, parent-of-origin differences in DNA methylation of X genes can play a role in sex differences in immune responses. Many autoimmune diseases are more frequent in females than in males in humans and their mouse models, and sex differences in immune responses have been shown. Despite extensive studies of sex hormones, mechanisms underlying these sex differences remain unclear. Here, we focused on sex chromosomes using the “four core genotypes” model in C57BL/6 mice and discovered that the transcriptomes of both autoantigen and anti-CD3/CD28 stimulated CD4+ T lymphocytes showed higher expression of a cluster of 5 X genes when derived from XY as compared to XX mice. We next determined if higher expression of an X gene in XY compared to XX could be due to parent-of-origin differences in DNA methylation of the X chromosome. We found a global increase in DNA methylation on the X chromosome of paternal as compared to maternal origin. Since DNA methylation usually suppresses gene expression, this result was consistent with higher expression of X genes in XY cells because XY cells always express from the maternal X chromosome. In addition, gene expression analysis of F1 hybrid mice from CAST × FVB reciprocal crosses showed preferential gene expression from the maternal X compared to paternal X chromosome, revealing that these parent-of-origin effects are not strain-specific. SJL mice also showed a parent-of-origin effect on DNA methylation and X gene expression; however, which X genes were affected differed from those in C57BL/6. Together, this demonstrates how parent-of-origin differences in DNA methylation of the X chromosome can lead to sex differences in gene expression during immune responses.
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23
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Enrichment of Polyfunctional IL-17-Producing T Cells in Paradoxical Psoriasis Skin Lesions. J Invest Dermatol 2019; 140:1094-1097. [PMID: 31682840 DOI: 10.1016/j.jid.2019.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/18/2019] [Accepted: 10/22/2019] [Indexed: 11/21/2022]
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24
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de Marcken M, Dhaliwal K, Danielsen AC, Gautron AS, Dominguez-Villar M. TLR7 and TLR8 activate distinct pathways in monocytes during RNA virus infection. Sci Signal 2019; 12:12/605/eaaw1347. [DOI: 10.1126/scisignal.aaw1347] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Human blood CD14+monocytes are bone marrow–derived white blood cells that sense and respond to pathogens. Although innate immune activation by RNA viruses preferentially occurs through intracellular RIG-I–like receptors, other nucleic acid recognition receptors, such as Toll-like receptors (TLRs), play a role in finely programming the final outcome of virus infection. Here, we dissected how human monocytes respond to infection with either Coxsackie (CV), encephalomyocarditis (EMCV), influenza A (IAV), measles (MV), Sendai (SV), or vesicular stomatitis (VSV) virus. We found that in monocytes, type I interferon (IFN) and cytokine responses to infection were RNA virus specific and differentially involved TLR7 and TLR8, which sense single-stranded RNA. These TLRs activated distinct signaling cascades in monocytes, which correlated with differences in the production of cytokines involved in the polarization of CD4+T helper cells. Furthermore, we found that TLR7 signaling specifically increased expression of the transcription factor FOSL1, which reduced IL-27 and TNFα production by monocytes. TLR7, but not TLR8, activation of monocytes also stimulated Ca2+flux that prevented type I IFN responses. Our work demonstrates that in human monocytes, TLR7 and TLR8 triggered different signaling pathways that contribute to distinct phenotypes during RNA virus infection. In addition, we defined individual targets within these pathways that promoted specific T helper and antiviral responses.
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Affiliation(s)
- Marine de Marcken
- Department of Neurology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Khushwant Dhaliwal
- Department of Neurology, Yale School of Medicine, New Haven, CT 06520, USA
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25
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Rönnblom L, Leonard D. Interferon pathway in SLE: one key to unlocking the mystery of the disease. Lupus Sci Med 2019; 6:e000270. [PMID: 31497305 PMCID: PMC6703304 DOI: 10.1136/lupus-2018-000270] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/19/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022]
Abstract
SLE is characterised by an activation of the interferon (IFN) system, which leads to an increased expression of IFN-regulated genes. The reasons behind the IFN signature in SLE are (1) the existence of endogenous IFN inducers, (2) activation of several IFN-producing cell types, (3) production of many different IFNs, (4) a genetic setup promoting IFN production and (5) deficient negative feedback mechanisms. The consequences for the immune system is a continuous stimulation to an immune response, and for the patient a number of different organ manifestations leading to typical symptoms for SLE. In the current review, we will present the existing knowledge of the IFN system and pathway activation in SLE. We will also discuss how this information can contribute to our understanding of both the aetiopathogenesis and some organ manifestations of the disease. We will put forward some issues that are unresolved and should be clarified in order to make a proper stratification of patients with SLE, which seems important when selecting a therapy aiming to downregulate the IFN system.
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Affiliation(s)
- Lars Rönnblom
- Department of Medical Sciences, Rheumatology, Uppsala University, Uppsala, Sweden
| | - Dag Leonard
- Department of Medical Sciences, Rheumatology, Uppsala University, Uppsala, Sweden
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26
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Zhou ZJ, Xin HY, Li J, Hu ZQ, Luo CB, Zhou SL. Intratumoral plasmacytoid dendritic cells as a poor prognostic factor for hepatocellular carcinoma following curative resection. Cancer Immunol Immunother 2019; 68:1223-1233. [PMID: 31201473 PMCID: PMC11028119 DOI: 10.1007/s00262-019-02355-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 06/05/2019] [Indexed: 01/11/2023]
Abstract
Plasmacytoid dendritic cells (pDCs) are present in various primary and metastatic human neoplasms; however, their clinical significance in hepatocellular carcinoma (HCC) is unclear. In this study, we investigated the distribution, prognostic value, and potential function of pDCs in HCC patients undergoing curative resection. We performed immunohistochemical analyses of whole tumor sections from 224 patients to assess the expression of BDCA2, CD3, CD4, CD8, Foxp3, granzyme B, IL-17, and CD34. The findings were validated using tissue microarrays from another two independent cohorts totaling 841 HCC patients undergoing curative resection. Our results demonstrated that high numbers of BDCA2+ pDCs within tumors correlated with high alpha-fetoprotein levels, greater vascular invasion, advanced tumor-node-metastasis stage, shorter overall survival, and a higher recurrence rate. However, patient outcomes were not associated with pDCs in peritumoral stromal or nontumor tissues. Furthermore, an increase in intratumoral pDCs was associated with increased intratumoral infiltration of Foxp3+ regulatory T cells and IL-17-producing cells and correlated with tumor vascular density. Univariate and multivariate analyses revealed that the presence of intratumoral pDCs alone or in combination with regulatory T and/or IL-17-producing cells was an independent predictor of time to recurrence and overall survival. In conclusion, our study demonstrated that intratumoral infiltration by pDCs is a novel indicator for poor prognosis in patients with HCC, possibly through the induction of an immune tolerogenic and inflammatory tumor microenvironment comprising regulatory T and IL-17-producing cells. An assessment of the combination of these cells represents a superior predictor of patient outcome.
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Affiliation(s)
- Zheng-Jun Zhou
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China
- Institute of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Hao-Yang Xin
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China
| | - Jia Li
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China
| | - Zhi-Qiang Hu
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China
| | - Chu-Bin Luo
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China
| | - Shao-Lai Zhou
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai, 200032, China.
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, 200032, China.
- Institute of Biomedical Sciences, Fudan University, Shanghai, 200032, China.
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27
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Sharma J, Larkin J. Therapeutic Implication of SOCS1 Modulation in the Treatment of Autoimmunity and Cancer. Front Pharmacol 2019; 10:324. [PMID: 31105556 PMCID: PMC6499178 DOI: 10.3389/fphar.2019.00324] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/18/2019] [Indexed: 12/14/2022] Open
Abstract
The suppressor of cytokine signaling (SOCS) family of intracellular proteins has a vital role in the regulation of the immune system and resolution of inflammatory cascades. SOCS1, also called STAT-induced STAT inhibitor (SSI) or JAK-binding protein (JAB), is a member of the SOCS family with actions ranging from immune modulation to cell cycle regulation. Knockout of SOCS1 leads to perinatal lethality in mice and increased vulnerability to cancer, while several SNPs associated with the SOCS1 gene have been implicated in human inflammation-mediated diseases. In this review, we describe the mechanism of action of SOCS1 and its potential therapeutic role in the prevention and treatment of autoimmunity and cancer. We also provide a brief outline of the other JAK inhibitors, both FDA-approved and under investigation.
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Affiliation(s)
- Jatin Sharma
- Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
| | - Joseph Larkin
- Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
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28
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Won HY, Lee JY, Ryu D, Kim HT, Chang SY. The Role of Plasmacytoid Dendritic Cells in Gut Health. Immune Netw 2019; 19:e6. [PMID: 30838161 PMCID: PMC6399095 DOI: 10.4110/in.2019.19.e6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/09/2018] [Accepted: 12/19/2018] [Indexed: 02/08/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique subset of cells with different functional characteristics compared to classical dendritic cells. The pDCs are critical for the production of type I IFN in response to microbial and self-nucleic acids. They have an important role for host defense against viral pathogen infections. In addition, pDCs have been well studied as a critical player for breaking tolerance to self-nucleic acids that induce autoimmune disorders such as systemic lupus erythematosus. However, pDCs have an immunoregulatory role in inducing the immune tolerance by generating Tregs and various regulatory mechanisms in mucosal tissues. Here, we summarize the recent studies of pDCs that focused on the functional characteristics of gut pDCs, including interactions with other immune cells in the gut. Furthermore, the dynamic role of gut pDCs will be investigated with respect to disease status including gut infection, inflammatory bowel disease, and cancers.
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Affiliation(s)
- Hye-Yeon Won
- Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University College of Pharmacy, Suwon, 16499, Korea
| | - Ju-Young Lee
- Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University College of Pharmacy, Suwon, 16499, Korea
| | - Dahye Ryu
- Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University College of Pharmacy, Suwon, 16499, Korea
| | - Hyung-Taek Kim
- Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University College of Pharmacy, Suwon, 16499, Korea
| | - Sun-Young Chang
- Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University College of Pharmacy, Suwon, 16499, Korea
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29
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Kupriyanov SV, Sinitskii AI. Pleiotropic functions of plasmacytoid dendritic cells in the pathogenesis of the rheumatoid arthritis. Med Hypotheses 2018; 122:26-30. [PMID: 30593416 DOI: 10.1016/j.mehy.2018.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 10/08/2018] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
Abstract
Rheumatoid arthritis is a chronic autoimmune inflammatory disease with an unclear etiology. The disease is characterized by infiltration of synovial tissue with immune cells, among which there are dendritic cells that play multifaceted roles in the pathogenesis of the disease. Here we shall assume that plasmacytoid dendritic cells are able to change their phenotype under the influence of various stimuli, thereby modulating the course of the disease, contributing to both the development of exacerbations and the induction of remissions depending on the phenotype they have acquired. This property can be used to develop new methods of immunotherapy.
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Affiliation(s)
- Semyon V Kupriyanov
- Department of Biochemistry, South-Ural State Medical University, Vorovskogo St., 64, Chelyabinsk 454092, Russia.
| | - Anton I Sinitskii
- Department of Biochemistry, South-Ural State Medical University, Vorovskogo St., 64, Chelyabinsk 454092, Russia
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30
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Yu CF, Peng WM, Schlee M, Barchet W, Eis-Hübinger AM, Kolanus W, Geyer M, Schmitt S, Steinhagen F, Oldenburg J, Novak N. SOCS1 and SOCS3 Target IRF7 Degradation To Suppress TLR7-Mediated Type I IFN Production of Human Plasmacytoid Dendritic Cells. THE JOURNAL OF IMMUNOLOGY 2018; 200:4024-4035. [PMID: 29712772 DOI: 10.4049/jimmunol.1700510] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 04/10/2018] [Indexed: 01/15/2023]
Abstract
Type I IFN production of plasmacytoid dendritic cells (pDCs) triggered by TLR-signaling is an essential part of antiviral responses and autoimmune reactions. Although it was well-documented that members of the cytokine signaling (SOCS) family regulate TLR-signaling, the mechanism of how SOCS proteins regulate TLR7-mediated type I IFN production has not been elucidated yet. In this article, we show that TLR7 activation in human pDCs induced the expression of SOCS1 and SOCS3. SOCS1 and SOCS3 strongly suppressed TLR7-mediated type I IFN production. Furthermore, we demonstrated that SOCS1- and SOCS3-bound IFN regulatory factor 7, a pivotal transcription factor of the TLR7 pathway, through the SH2 domain to promote its proteasomal degradation by lysine 48-linked polyubiquitination. Together, our results demonstrate that SOCS1/3-mediated degradation of IFN regulatory factor 7 directly regulates TLR7 signaling and type I IFN production in pDCs. This mechanism might be targeted by therapeutic approaches to either enhance type I IFN production in antiviral treatment or decrease type I IFN production in the treatment of autoimmune diseases.
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Affiliation(s)
- Chun-Feng Yu
- Department of Dermatology and Allergy, University of Bonn, 53127 Bonn, Germany
| | - Wen-Ming Peng
- Department of Dermatology and Allergy, University of Bonn, 53127 Bonn, Germany
| | - Martin Schlee
- Institute of Clinical Chemistry and Pharmacology, University of Bonn, 53127 Bonn, Germany
| | - Winfried Barchet
- Institute of Clinical Chemistry and Pharmacology, University of Bonn, 53127 Bonn, Germany
| | | | - Waldemar Kolanus
- Department of Molecular Immune and Cell Biology, Life and Medical Sciences Institute, University of Bonn, 53127 Bonn, Germany
| | - Matthias Geyer
- Institute of Innate Immunity, Department of Structural Immunology, University of Bonn, 53127 Bonn, Germany
| | - Sebastian Schmitt
- Institute of Innate Immunity, Department of Structural Immunology, University of Bonn, 53127 Bonn, Germany
| | - Folkert Steinhagen
- Department of Anesthesiology and Intensive Care Medicine, University of Bonn, 53127 Bonn, Germany; and
| | - Johannes Oldenburg
- Institute of Experimental Hematology and Transfusion Medicine, University of Bonn, 53127 Bonn, Germany
| | - Natalija Novak
- Department of Dermatology and Allergy, University of Bonn, 53127 Bonn, Germany;
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31
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Preite NW, Feriotti C, Souza de Lima D, da Silva BB, Condino-Neto A, Pontillo A, Calich VLG, Loures FV. The Syk-Coupled C-Type Lectin Receptors Dectin-2 and Dectin-3 Are Involved in Paracoccidioides brasiliensis Recognition by Human Plasmacytoid Dendritic Cells. Front Immunol 2018; 9:464. [PMID: 29616019 PMCID: PMC5869931 DOI: 10.3389/fimmu.2018.00464] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 02/21/2018] [Indexed: 01/22/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs), which have been extensively studied in the context of the immune response to viruses, have recently been implicated in host defense mechanisms against fungal infections. Nevertheless, the involvement of human pDCs during paracoccidioidomycosis (PCM), a fungal infection endemic to Latin America, has been scarcely studied. However, pDCs were found in the cutaneous lesions of PCM patients, and in pulmonary model of murine PCM these cells were shown to control disease severity. These findings led us to investigate the role of human pDCs in the innate phase of PCM. Moreover, considering our previous data on the engagement of diverse Toll-like receptors and C-type lectin receptors receptors in Paracoccidioides brasiliensis recognition, we decided to characterize the innate immune receptors involved in the interaction between human pDCs and yeast cells. Purified pDCs were obtained from peripheral blood mononuclear cells from healthy donors and they were stimulated with P. brasiliensis with or without blocking antibodies to innate immune receptors. Here we demonstrated that P. brasiliensis stimulation activates human pDCs that inhibit fungal growth and secrete pro-inflammatory cytokines and type I IFNs. Surprisingly, P. brasiliensis-stimulated pDCs produce mature IL-1β and activate caspase 1, possibly via inflammasome activation, which is a phenomenon not yet described during pDC engagement by microorganisms. Importantly, we also demonstrate that dectin-2 and dectin-3 are expressed on pDCs and appear to be involved (via Syk signaling) in the pDC-P. brasiliensis interaction. Moreover, P. brasiliensis-stimulated pDCs exhibited an efficient antigen presentation and were able to effectively activate CD4+ and CD8+ T cells. In conclusion, our study demonstrated for the first time that human pDCs are involved in P. brasiliensis recognition and may play an important role in the innate and adaptive immunity against this fungal pathogen.
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Affiliation(s)
- Nycolas Willian Preite
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Claudia Feriotti
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Dhêmerson Souza de Lima
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Bruno Borges da Silva
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Antônio Condino-Neto
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Alessandra Pontillo
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Vera Lúcia Garcia Calich
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Flávio Vieira Loures
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
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32
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Lo Presti E, Caccamo N, Orlando V, Dieli F, Meraviglia S. Activation and selective IL-17 response of human Vγ9Vδ2 T lymphocytes by TLR-activated plasmacytoid dendritic cells. Oncotarget 2018; 7:60896-60905. [PMID: 27590513 PMCID: PMC5308624 DOI: 10.18632/oncotarget.11755] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 08/02/2016] [Indexed: 11/25/2022] Open
Abstract
Vγ9Vδ2 T cells and plasmacytoid dendritic cells (pDCs) are two distinct cell types of innate immunity that participate in early phases of immune response. We investigated whether a close functional relationship exists between these two cell populations using an in vitro co-culture in a human system. pDCs that had been activated by IL-3 and the TLR9 ligand CpG induced substantial activation of Vγ9Vδ2 T cells upon co-culture, which was cell-to-cell contact dependent, as demonstrated in transwell experiments, but that did not involve any of the costimulatory molecules potentially expressed by pDCs or Vγ9V2 T cells, such as ICOS-L, OX40 and CD40L. Activated pDCs selectively induced IL-17, but not IFN-γ, responses of Vγ9Vδ2T cells, which was dominant over the antigen-induced response, and this was associated with the expansion of memory (both central and effector memory) subsets of Vγ9Vδ2 T cells. Overall, our results provide a further piece of information on the complex relationship between these two populations of cells with innate immunity features during inflammatory responses.
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Affiliation(s)
- Elena Lo Presti
- Central Laboratory of Advanced Diagnosis and Biomedical Research (CLADIBIOR), University of Palermo, Palermo, Italy.,Department of Biopathology and Medical Biotechnologies (DIBIMED), University of Palermo, Palermo, Italy
| | - Nadia Caccamo
- Central Laboratory of Advanced Diagnosis and Biomedical Research (CLADIBIOR), University of Palermo, Palermo, Italy.,Department of Biopathology and Medical Biotechnologies (DIBIMED), University of Palermo, Palermo, Italy
| | - Valentina Orlando
- Central Laboratory of Advanced Diagnosis and Biomedical Research (CLADIBIOR), University of Palermo, Palermo, Italy.,Department of Biopathology and Medical Biotechnologies (DIBIMED), University of Palermo, Palermo, Italy
| | - Francesco Dieli
- Central Laboratory of Advanced Diagnosis and Biomedical Research (CLADIBIOR), University of Palermo, Palermo, Italy.,Department of Biopathology and Medical Biotechnologies (DIBIMED), University of Palermo, Palermo, Italy
| | - Serena Meraviglia
- Central Laboratory of Advanced Diagnosis and Biomedical Research (CLADIBIOR), University of Palermo, Palermo, Italy.,Department of Biopathology and Medical Biotechnologies (DIBIMED), University of Palermo, Palermo, Italy
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33
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The Biology of Monocytes and Dendritic Cells: Contribution to HIV Pathogenesis. Viruses 2018; 10:v10020065. [PMID: 29415518 PMCID: PMC5850372 DOI: 10.3390/v10020065] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/01/2018] [Accepted: 02/03/2018] [Indexed: 02/07/2023] Open
Abstract
Myeloid cells such as monocytes, dendritic cells (DC) and macrophages (MΦ) are key components of the innate immune system contributing to the maintenance of tissue homeostasis and the development/resolution of immune responses to pathogens. Monocytes and DC, circulating in the blood or infiltrating various lymphoid and non-lymphoid tissues, are derived from distinct bone marrow precursors and are typically short lived. Conversely, recent studies revealed that subsets of tissue resident MΦ are long-lived as they originate from embryonic/fetal precursors that have the ability to self-renew during the life of an individual. Pathogens such as the human immunodeficiency virus type 1 (HIV-1) highjack the functions of myeloid cells for viral replication (e.g., MΦ) or distal dissemination and cell-to-cell transmission (e.g., DC). Although the long-term persistence of HIV reservoirs in CD4+ T-cells during viral suppressive antiretroviral therapy (ART) is well documented, the ability of myeloid cells to harbor replication competent viral reservoirs is still a matter of debate. This review summarizes the current knowledge on the biology of monocytes and DC during homeostasis and in the context of HIV-1 infection and highlights the importance of future studies on long-lived resident MΦ to HIV persistence in ART-treated patients.
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34
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Proteomics of Human Dendritic Cell Subsets Reveals Subset-Specific Surface Markers and Differential Inflammasome Function. Cell Rep 2017; 16:2953-2966. [PMID: 27626665 PMCID: PMC5039226 DOI: 10.1016/j.celrep.2016.08.023] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/25/2016] [Accepted: 08/05/2016] [Indexed: 01/01/2023] Open
Abstract
Dendritic cells (DCs) play a key role in orchestrating adaptive immune responses. In human blood, three distinct subsets exist: plasmacytoid DCs (pDCs) and BDCA3+ and CD1c+ myeloid DCs. In addition, a DC-like CD16+ monocyte has been reported. Although RNA-expression profiles have been previously compared, protein expression data may provide a different picture. Here, we exploited label-free quantitative mass spectrometry to compare and identify differences in primary human DC subset proteins. Moreover, we integrated these proteomic data with existing mRNA data to derive robust cell-specific expression signatures with more than 400 differentially expressed proteins between subsets, forming a solid basis for investigation of subset-specific functions. We illustrated this by extracting subset identification markers and by demonstrating that pDCs lack caspase-1 and only express low levels of other inflammasome-related proteins. In accordance, pDCs were incapable of interleukin (IL)-1β secretion in response to ATP. We present a comprehensive quantitative proteome comparison of primary human DC subsets Proteome comparison reveals many expression differences between DC subsets We provide a resource to derive markers and examine subset functional specialization pDCs lack caspase-1 and have a decreased inflammasome response
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35
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Ye J, Wang Y, Liu X, Li L, Opejin A, Hsueh EC, Luo H, Wang T, Hawiger D, Peng G. TLR7 Signaling Regulates Th17 Cells and Autoimmunity: Novel Potential for Autoimmune Therapy. THE JOURNAL OF IMMUNOLOGY 2017; 199:941-954. [PMID: 28652396 DOI: 10.4049/jimmunol.1601890] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 05/26/2017] [Indexed: 01/20/2023]
Abstract
Innate regulation through TLR signaling has been shown to be important for promoting T cell subset development and function. However, limited information is known about whether differential TLR signaling can selectively inhibit Th17 and/or Th1 cells, which are important for controlling excessive inflammation and autoimmune responses. In this article, we demonstrate that activation of TLR7 signaling in T cells can inhibit Th17 cell differentiation from naive T cells and IL-17 production in established Th17 cells. We further report that downregulation of STAT3 signaling is responsible for TLR7-mediated inhibition of Th17 cells due to induction of suppressor of cytokine signaling 3 and 5. TLR7-mediated suppression of Th17 cells does not require dendritic cell involvement. In addition, we show that TLR7 signaling can suppress Th1 cell development and function through a mechanism different from Th17 cell suppression. Importantly, our complementary in vivo studies demonstrate that treatment with the TLR7 ligand imiquimod can inhibit Th1 and Th17 cells, resulting in the prevention of, and an immunotherapeutic reduction in, experimental autoimmune encephalomyelitis. These studies identify a new strategy to manipulate Th17/Th1 cells through TLR7 signaling, with important implications for successful immunotherapy against autoimmune and inflammatory diseases.
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Affiliation(s)
- Jian Ye
- Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Yadan Wang
- Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Xia Liu
- Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Lingyun Li
- Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Adeleye Opejin
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Eddy C Hsueh
- Division of General Surgery, Department of Surgery, Saint Louis University School of Medicine, St. Louis, MO 63110; and
| | - Huanle Luo
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555
| | - Tian Wang
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555
| | - Daniel Hawiger
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Guangyong Peng
- Division of Infectious Diseases, Allergy, and Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, St. Louis, MO 63104; .,Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO 63104
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36
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de Araújo EF, Medeiros DH, Galdino NADL, Condino-Neto A, Calich VLG, Loures FV. Tolerogenic Plasmacytoid Dendritic Cells Control Paracoccidioides brasiliensis Infection by Inducting Regulatory T Cells in an IDO-Dependent Manner. PLoS Pathog 2016; 12:e1006115. [PMID: 27992577 PMCID: PMC5215616 DOI: 10.1371/journal.ppat.1006115] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 01/04/2017] [Accepted: 12/09/2016] [Indexed: 11/26/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs), considered critical for immunity against viruses, were recently associated with defense mechanisms against fungal infections. However, the immunomodulatory function of pDCs in pulmonary paracoccidiodomycosis (PCM), an endemic fungal infection of Latin America, has been poorly defined. Here, we investigated the role of pDCs in the pathogenesis of PCM caused by the infection of 129Sv mice with 1 x 106P. brasiliensis-yeasts. In vitro experiments showed that P. brasiliensis infection induces the maturation of pDCs and elevated synthesis of TNF-α and IFN-β. The in vivo infection caused a significant influx of pDCs to the lungs and increased levels of pulmonary type I IFN. Depletion of pDCs by a specific monoclonal antibody resulted in a less severe infection, reduced tissue pathology and increased survival time of infected mice. An increased influx of macrophages and neutrophils and elevated presence of CD4+ and CD8+ T lymphocytes expressing IFN-γ and IL-17 in the lungs of pDC-depleted mice were also observed. These findings were concomitant with decreased frequency of Treg cells and reduced levels of immunoregulatory cytokines such as IL-10, TGF-β, IL-27 and IL-35. Importantly, P. brasilienis infection increased the numbers of pulmonary pDCs expressing indoleamine 2,3-dioxygenase-1 (IDO), an enzyme with immunoregulatory properties, that were reduced following pDC depletion. In agreement, an increased immunogenic activity of infected pDCs was observed when IDO-deficient or IDO-inhibited pDCs were employed in co-cultures with lymphocytes Altogether, our results suggest that in pulmonary PCM pDCs exert a tolerogenic function by an IDO-mediated mechanism that increases Treg activity. The fungus Paracoccidioides brasiliensis causes paracoccidioidomycosis (PCM), the most relevant deep mycosis in Latin America. The plasmacytoid dendritic cells (pDCs) are important immune cells involved in protection against viral infections, but their role in fungal infections remains unclear. Here, we investigated the role of pDCs in the pathogenesis of pulmonary PCM using a monoclonal antibody to deplete this DC subset. pDCs depletion leads to a less severe PCM associated with increased T cell response mainly mediated by Th1 and Th17 cells. The lung homogenates of depleted mice showed diminished levels of type I IFN and anti-inflammatory cytokines. In addition, a reduced number of regulatory T cells (Treg) paralleled a diminished number pDCs expressing IDO, a potent immunoregulatory enzyme. In agreement, pDCs of IDO-/- mice or IDO-inhibited pDCs stimulated by P. brasiliensis yeasts expanded elevated numbers of T cells concomitant with a reduced expansion of Treg cells. Taken together, our results demonstrate a tolerogenic activity of pDCs that enhances the severity of a pulmonary mycosis mediated by the concerted action of IDO and Treg cells. These results reveal a new function for pDCs in primary fungal infections and open new perspectives for immunotherapeutic procedures of PCM involving the control of IDO and Treg activity.
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Affiliation(s)
- Eliseu Frank de Araújo
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Daniella Helena Medeiros
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Antônio Condino-Neto
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Vera Lúcia Garcia Calich
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Flávio Vieira Loures
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
- * E-mail:
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Keswani T, Sarkar S, Sengupta A, Bhattacharyya A. Role of TGF-β and IL-6 in dendritic cells, Treg and Th17 mediated immune response during experimental cerebral malaria. Cytokine 2016; 88:154-166. [DOI: 10.1016/j.cyto.2016.08.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 07/31/2016] [Accepted: 08/30/2016] [Indexed: 12/14/2022]
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Xiao Q, Li X, Sun D, Yi H, Lu X, Nian H. TLR7 Engagement on Dendritic Cells Enhances Autoreactive Th17 Responses via Activation of ERK. THE JOURNAL OF IMMUNOLOGY 2016; 197:3820-3830. [DOI: 10.4049/jimmunol.1600333] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 09/12/2016] [Indexed: 11/19/2022]
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Huang Z, Gan J, Long Z, Guo G, Shi X, Wang C, Zang Y, Ding Z, Chen J, Zhang J, Dong L. Targeted delivery of let-7b to reprogramme tumor-associated macrophages and tumor infiltrating dendritic cells for tumor rejection. Biomaterials 2016; 90:72-84. [PMID: 26994345 DOI: 10.1016/j.biomaterials.2016.03.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 02/28/2016] [Accepted: 03/06/2016] [Indexed: 02/04/2023]
Abstract
Both tumor associated macrophages (TAMs) and tumor infiltrating dendritic cells (TIDCs) are important components in the tumor microenvironment that mediate tumor immunosuppression and promote cancer progression. Targeting these cells and altering their phenotypes may become a new strategy to recover their anti-tumor activities and thereby restore the local immune surveillance against tumor. In this study, we constructed a nucleic acid delivery system for the delivery of let-7b, a synthetic microRNA mimic. Our carrier has an affinity for the mannose receptors on TAMs/TIDCs and is responsive to the low-pH tumor microenvironment. The delivery of let-7b could reactivate TAMs/TIDCs by acting as a TLR-7 agonist and suppressing IL-10 production in vitro. In a breast cancer mouse model, let-7b delivered by this system efficiently reprogrammed the functions of TAMs/TIDCs, reversed the suppressive tumor microenvironment, and inhibited tumor growth. Taken together, this strategy, designed based upon TAMs/TIDCs-targeting delivery and the dual biological functions of let-7b (TLR-7 ligand and IL-10 inhibitor), may provide a new approach for cancer immunotherapy.
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Affiliation(s)
- Zhen Huang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Jingjing Gan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Ziyan Long
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Guangxing Guo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Xiafei Shi
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
| | - Yuhui Zang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Zhi Ding
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Jiangning Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Junfeng Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China.
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China.
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Plasmacytoid dendritic cells in allogeneic hematopoietic cell transplantation: benefit or burden? Bone Marrow Transplant 2015; 51:333-43. [PMID: 26642333 DOI: 10.1038/bmt.2015.301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 10/25/2015] [Accepted: 10/27/2015] [Indexed: 11/09/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) bridge innate and adaptive immune responses and have important roles in hematopoietic engraftment, GvHD and graft-versus-leukemia responses following allogeneic hematopoietic cell transplantation (HCT). In addition, pDCs mediate antiviral immunity, particularly as they are the body's primary cellular source of type I interferon. Given their pleiotropic roles, pDCs have emerged as cells that critically impact transplant outcomes, including overall survival. In this article, we will review the pre-clinical and clinical literature, supporting the crucial roles that pDCs assume as key immune effector cells during HCT.
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Givi ME, Akbari P, Boon L, Puzovic VS, Bezemer GFG, Ricciardolo FLM, Folkerts G, Redegeld FA, Mortaz E. Dendritic cells inversely regulate airway inflammation in cigarette smoke-exposed mice. Am J Physiol Lung Cell Mol Physiol 2015; 310:L95-102. [PMID: 26475733 DOI: 10.1152/ajplung.00251.2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 10/08/2015] [Indexed: 12/31/2022] Open
Abstract
The recruitment and activation of inflammatory cells into the respiratory system is considered a crucial feature in the pathophysiology of chronic obstructive pulmonary disease (COPD). Because dendritic cells (DCs) have a pivotal role in the onset and regulation of immune responses, we investigated the effect of modulating DC subsets on airway inflammation by acute cigarette smoke (CS) exposure. CS-exposed mice (5 days) were treated with fms-like tyrosine kinase 3 ligand (Flt3L) and 120g8 antibody to increase total DC numbers and deplete plasmacytoid DCs (pDCs), respectively. Flt3L treatment decreased the number of inflammatory cells in the bronchoalveolar lavage (BALF) of the smoke-exposed mice and increased these in lung tissue. DC modulation reduced IL-17 and increased IL-10 levels, which may be responsible for the suppression of the BALF cells. Furthermore, depletion of pDCs led to increased infiltration of alveolar macrophages while restricting the presence of CD103(+) DCs. This study suggests that DC subsets may differentially and compartment-dependent influence the inflammation induced by CS. pDC may play a role in preventing the pathogenesis of CS by inhibiting the alveolar macrophage migration to lung and increasing CD103(+) DCs at inflammatory sites to avoid extensive lung tissue damage.
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Affiliation(s)
- Masoumeh Ezzati Givi
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands; Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Shahid Chamran University, Ahvaz, Iran
| | - Peyman Akbari
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | | | - Vladimir S Puzovic
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Gillina F G Bezemer
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Fabio L M Ricciardolo
- Division of Respiratory Disease, Department of Clinical and Biological Sciences, University of Torino, Orbassano (Torino), Italy; and
| | - Gert Folkerts
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Frank A Redegeld
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands;
| | - Esmaeil Mortaz
- Faculty of Science, Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands; Faculty of Medicine, Department of Immunology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mackern-Oberti JP, Llanos C, Riedel CA, Bueno SM, Kalergis AM. Contribution of dendritic cells to the autoimmune pathology of systemic lupus erythematosus. Immunology 2015; 146:497-507. [PMID: 26173489 DOI: 10.1111/imm.12504] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/23/2015] [Accepted: 07/03/2015] [Indexed: 12/16/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a heterogeneous disease in which excessive inflammation, autoantibodies and complement activation lead to multisystem tissue damage. The contribution of the individual genetic composition has been extensively studied, and several susceptibility genes related to immune pathways that participate in SLE pathogenesis have been identified. It has been proposed that SLE takes place when susceptibility factors interact with environmental stimuli leading to a deregulated immune response. Experimental evidence suggests that such events are related to the failure of T-cell and B-cell suppression mediated by defects in cell signalling, immune tolerance and apoptotic mechanism promoting autoimmunity. In addition, it has been reported that dendritic cells (DCs) from SLE patients, which are crucial in the modulation of peripheral tolerance to self-antigens, show an increased ratio of activating/inhibitory receptors on their surfaces. This phenotype and an augmented expression of co-stimulatory molecules is thought to be critical for disease pathogenesis. Accordingly, tolerogenic DCs can be a potential strategy for developing antigen-specific therapies to reduce detrimental inflammation without causing systemic immunosuppression. In this review article we discuss the most relevant data relative to the contribution of DCs to the triggering of SLE.
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Affiliation(s)
- Juan P Mackern-Oberti
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Institute of Medicine and Experimental Biology of Cuyo (IMBECU), Science and Technology Center (CCT) of Mendoza, National Council of Scientific and Technical Research (CONICET), Mendoza, Argentina.,Institute of Physiology, School of Medicine, National University of Cuyo, Mendoza, Argentina
| | - Carolina Llanos
- Millennium Institute on Immunology and Immunotherapy, Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia A Riedel
- Millennium Institute on Immunology and Immunotherapy, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas y Facultad de Medicina, Universidad Andrés Bello, Santiago, Chile.,INSERM U1064, Nantes, France
| | - Susan M Bueno
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,INSERM U1064, Nantes, France
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,INSERM U1064, Nantes, France
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Biswas PS, Aggarwal R, Levesque MC, Maers K, Ramani K. Type I interferon and T helper 17 cells co-exist and co-regulate disease pathogenesis in lupus patients. Int J Rheum Dis 2015; 18:646-53. [DOI: 10.1111/1756-185x.12636] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Partha S. Biswas
- Division of Rheumatology and Clinical Immunology; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Rohit Aggarwal
- Division of Rheumatology and Clinical Immunology; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Marc C. Levesque
- Division of Rheumatology and Clinical Immunology; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Kelly Maers
- Division of Rheumatology and Clinical Immunology; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
| | - Kritika Ramani
- Division of Rheumatology and Clinical Immunology; Department of Medicine; University of Pittsburgh; Pittsburgh PA USA
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Recognition of Aspergillus fumigatus hyphae by human plasmacytoid dendritic cells is mediated by dectin-2 and results in formation of extracellular traps. PLoS Pathog 2015; 11:e1004643. [PMID: 25659141 PMCID: PMC4450068 DOI: 10.1371/journal.ppat.1004643] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 12/23/2014] [Indexed: 01/12/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) were initially considered as critical for innate immunity to viruses. However, our group has shown that pDCs bind to and inhibit the growth of Aspergillus fumigatus hyphae and that depletion of pDCs renders mice hypersusceptible to experimental aspergillosis. In this study, we examined pDC receptors contributing to hyphal recognition and downstream events in pDCs stimulated by A. fumigatus hyphae. Our data show that Dectin-2, but not Dectin-1, participates in A. fumigatus hyphal recognition, TNF-α and IFN-α release, and antifungal activity. Moreover, Dectin-2 acts in cooperation with the FcRγ chain to trigger signaling responses. In addition, using confocal and electron microscopy we demonstrated that the interaction between pDCs and A. fumigatus induced the formation of pDC extracellular traps (pETs) containing DNA and citrullinated histone H3. These structures closely resembled those of neutrophil extracellular traps (NETs). The microarray analysis of the pDC transcriptome upon A. fumigatus infection also demonstrated up-regulated expression of genes associated with apoptosis as well as type I interferon-induced genes. Thus, human pDCs directly recognize A. fumigatus hyphae via Dectin-2; this interaction results in cytokine release and antifungal activity. Moreover, hyphal stimulation of pDCs triggers a distinct pattern of pDC gene expression and leads to pET formation.
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Role of dendritic cells in the initiation, progress and modulation of systemic autoimmune diseases. Autoimmun Rev 2015; 14:127-39. [DOI: 10.1016/j.autrev.2014.10.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 09/30/2014] [Indexed: 12/11/2022]
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46
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Guéry L, Dubrot J, Lippens C, Brighouse D, Malinge P, Irla M, Pot C, Reith W, Waldburger JM, Hugues S. Ag-presenting CpG-activated pDCs prime Th17 cells that induce tumor regression. Cancer Res 2014; 74:6430-40. [PMID: 25252912 DOI: 10.1158/0008-5472.can-14-1149] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Plasmacytoid dendritic cells (pDC) rapidly and massively produce type I IFN and other inflammatory cytokines in response to foreign nucleic acids, thereby indirectly influencing T-cell responses. Moreover, antigen (Ag)-presenting pDCs directly regulate T-cell differentiation. Depending on the immune environment, pDCs exhibit either tolerogenic or immunogenic properties. Here, we show that CpG-activated pDCs promote efficient Th17 differentiation. Indeed, Th17 responses are defective in mice selectively lacking MHCII on pDCs upon antigenic challenge. Importantly, in those mice, the frequency of Th17 cells infiltrating solid tumors is impaired. As a result, the recruitment of infiltrating leukocytes in tumors, including tumor-specific cytotoxic T lymphocytes (CTL), is altered and results in increased tumor growth. Importantly, following immunization with tumor Ag and CpG-B, MHCII-restricted Ag presentation by pDCs promotes the differentiation of antitumor Th17 cells that induce intratumor CTL recruitment and subsequent regression of established tumors. Our results highlight a new role for Ag presenting activated pDCs in promoting the development of Th17 cells and impacting on antitumor immunity.
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Affiliation(s)
- Leslie Guéry
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | - Juan Dubrot
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | - Carla Lippens
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | - Dale Brighouse
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | | | - Magali Irla
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland. Centre d'immunology de Marseille Luminy, Université de la Méditerranée, Marseille, France
| | - Caroline Pot
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland. Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland
| | - Walter Reith
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | - Jean-Marc Waldburger
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland
| | - Stéphanie Hugues
- Department of Pathology and Immunology, University of Geneva Medical School, Geneva, Switzerland.
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Martin JC, Baeten DL, Josien R. Emerging role of IL-17 and Th17 cells in systemic lupus erythematosus. Clin Immunol 2014; 154:1-12. [DOI: 10.1016/j.clim.2014.05.004] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/10/2014] [Accepted: 05/14/2014] [Indexed: 12/14/2022]
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48
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van der Waart AB, van der Velden WJ, Blijlevens NM, Dolstra H. Targeting the IL17 Pathway for the Prevention of Graft-Versus-Host Disease. Biol Blood Marrow Transplant 2014; 20:752-9. [DOI: 10.1016/j.bbmt.2014.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/10/2014] [Indexed: 11/26/2022]
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Chappell CP, Giltiay NV, Draves KE, Chen C, Hayden-Ledbetter MS, Shlomchik MJ, Kaplan DH, Clark EA. Targeting antigens through blood dendritic cell antigen 2 on plasmacytoid dendritic cells promotes immunologic tolerance. THE JOURNAL OF IMMUNOLOGY 2014; 192:5789-5801. [PMID: 24829416 DOI: 10.4049/jimmunol.1303259] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The C-type lectin receptor blood dendritic cell Ag 2 (BDCA2) is expressed exclusively on human plasmacytoid DCs (pDCs) and plays a role in Ag capture, internalization, and presentation to T cells. We used transgenic mice that express human BDCA2 and anti-BDCA2 mAbs to deliver Ags directly to BDCA2 on pDCs in vivo. Targeting Ag to pDCs in this manner resulted in significant suppression of Ag-specific CD4(+) T cell and Ab responses upon secondary exposure to Ag in the presence of adjuvant. Suppression of Ab responses required both a decrease in effector CD4(+) T cells and preservation of Foxp3(+) regulatory T cells (Tregs). Reduction in Treg numbers following Ag delivery to BDCA2 restored both CD4(+) T cell activation and Ab responses, demonstrating that Tregs were required for the observed tolerance. Our results demonstrate that Ag delivery to pDCs through BDCA2 is an effective method to induce immunological tolerance, which may be useful for treating autoimmune diseases or to inhibit unwanted Ab responses.
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Affiliation(s)
- Craig P Chappell
- Department of Immunology, School of Medicine, University of Washington, Seattle, WA, USA
| | - Natalia V Giltiay
- Department of Immunology, School of Medicine, University of Washington, Seattle, WA, USA
| | - Kevin E Draves
- Department of Immunology, School of Medicine, University of Washington, Seattle, WA, USA
| | | | | | - Mark J Shlomchik
- Department of Immunology, School of Medicine, University of Pittsburg, Pittsburg, PA, USA
| | - Daniel H Kaplan
- Department of Dermatology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Edward A Clark
- Department of Immunology, School of Medicine, University of Washington, Seattle, WA, USA.,Department of Microbiology, School of Medicine, University of Washington, Seattle, WA, USA
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50
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Brkic Z, Corneth OBJ, van Helden-Meeuwsen CG, Dolhain RJEM, Maria NI, Paulissen SMJ, Davelaar N, van Hamburg JP, van Daele PL, Dalm VA, van Hagen PM, Hazes JMW, Versnel MA, Lubberts E. T-helper 17 cell cytokines and interferon type I: partners in crime in systemic lupus erythematosus? Arthritis Res Ther 2014; 16:R62. [PMID: 24598455 PMCID: PMC4060204 DOI: 10.1186/ar4499] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 02/11/2014] [Indexed: 12/20/2022] Open
Abstract
Introduction A hallmark of systemic autoimmune diseases like systemic lupus erythematosus (SLE) is the increased expression of interferon (IFN) type I inducible genes, so-called IFN type I signature. Recently, T-helper 17 subset (Th17 cells), which produces IL-17A, IL-17F, IL-21, and IL-22, has been implicated in SLE. As CCR6 enriches for Th17 cells, we used this approach to investigate whether CCR6+ memory T-helper cells producing IL-17A, IL-17F, IL-21, and/or IL-22 are increased in SLE patients and whether this increase is related to the presence of IFN type I signature. Methods In total, 25 SLE patients and 15 healthy controls (HCs) were included. SLE patients were divided into IFN type I signature-positive (IFN+) (n = 16) and negative (IFN-) (n = 9) patients, as assessed by mRNA expression of IFN-inducible genes (IFIGs) in monocytes. Expression of IL-17A, IL-17F, IL-21, and IL-22 by CD4+CD45RO+CCR6+ T cells (CCR6+ cells) was measured with flow cytometry and compared between IFN+, IFN- patients and HCs. Results Increased percentages of IL-17A and IL-17A/IL-17F double-producing CCR6+ cells were observed in IFN+ patients compared with IFN- patients and HCs. IL-17A and IL-17F expression within CCR6+ cells correlated significantly with IFIG expression. In addition, we found significant correlation between B-cell activating factor of the tumor necrosis family (BAFF)–a factor strongly correlating with IFN type I - and IL-21 producing CCR6+ cells. Conclusions We show for the first time higher percentages of IL-17A and IL-17A/IL-17F double-producing CCR6+ memory T-helper cells in IFN+ SLE patients, supporting the hypothesis that IFN type I co-acts with Th17 cytokines in SLE pathogenesis.
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