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Interleukin-17 Family Cytokines in Metabolic Disorders and Cancer. Genes (Basel) 2022; 13:genes13091643. [PMID: 36140808 PMCID: PMC9498678 DOI: 10.3390/genes13091643] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 02/07/2023] Open
Abstract
Interleukin-17 (IL-17) family cytokines are potent drivers of inflammatory responses. Although IL-17 was originally identified as a cytokine that induces protective effects against bacterial and fungal infections, IL-17 can also promote chronic inflammation in a number of autoimmune diseases. Research in the last decade has also elucidated critical roles of IL-17 during cancer development and treatment. Intriguingly, IL-17 seems to play a role in the risk of cancers that are associated with metabolic disorders. In this review, we summarize our current knowledge on the biochemical basis of IL-17 signaling, IL-17′s involvement in cancers and metabolic disorders, and postulate how IL-17 family cytokines may serve as a bridge between these two types of diseases.
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Aslani MR, Sharghi A, Boskabady MH, Ghobadi H, Keyhanmanesh R, Alipour MR, Ahmadi M, Saadat S, Naghizadeh P. Altered gene expression levels of IL-17/TRAF6/MAPK/USP25 axis and pro-inflammatory cytokine levels in lung tissue of obese ovalbumin-sensitized rats. Life Sci 2022; 296:120425. [PMID: 35202642 DOI: 10.1016/j.lfs.2022.120425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/31/2022] [Accepted: 02/16/2022] [Indexed: 11/28/2022]
Abstract
AIMS The association between asthma and obesity has been shown but its accurate mechanism is unknown. In the current study, we sought to investigate the gene expression levels of IL-17/TRAF6/MAPK/USP25 axis and pro-inflammatory cytokine level (IL-6, IL-1β, and TNF-α) in obese Ovalbumin (OVA)-sensitized female and male Wistar rats lung tissue. MAIN METHODS Animals in both males and females were divided into eight groups (four groups in each sex) based on diet and OVA-sensitization: normal diet, a normal diet with OVA-sensitization, high-fat diet (HFD), and OVA-sensitization with an HFD. KEY FINDINGS In both sexes, obese OVA-sensitized rats, the methacholine concentration-response curve shifted to the left and EC50 methacholine decreased. Increased pro-inflammatory cytokines as well as elevated IL-17/TRAF6/MAPK axis genes and decreased USP25 gene expression were identified in obese OVA-sensitized groups. SIGNIFICANCE The results indicate that in obese OVA-sensitized rats, the IL-17 axis were involved in the pathogenesis of the disease and can be considered as a therapeutic target in subjects with obesity-related asthma.
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Affiliation(s)
- Mohammad Reza Aslani
- Department of Physiology, Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Afshan Sharghi
- Department of Community Medicine, Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Mohammad Hossein Boskabady
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hassan Ghobadi
- Internal Medicine Department, Pulmonary Division, Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Rana Keyhanmanesh
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mahdi Ahmadi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeideh Saadat
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Physiology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Parya Naghizadeh
- Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
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The Role of Airway Epithelial Cell Alarmins in Asthma. Cells 2022; 11:cells11071105. [PMID: 35406669 PMCID: PMC8997824 DOI: 10.3390/cells11071105] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 02/01/2023] Open
Abstract
The airway epithelium is the first line of defense for the lungs, detecting inhaled environmental threats through pattern recognition receptors expressed transmembrane or intracellularly. Activation of pattern recognition receptors triggers the release of alarmin cytokines IL-25, IL-33, and TSLP. These alarmins are important mediators of inflammation, with receptors widely expressed in structural cells as well as innate and adaptive immune cells. Many of the key effector cells in the allergic cascade also produce alarmins, thereby contributing to the airways disease by driving downstream type 2 inflammatory processes. Randomized controlled clinical trials have demonstrated benefit when blockade of TSLP and IL-33 were added to standard of care medications, suggesting these are important new targets for treatment of asthma. With genome-wide association studies demonstrating associations between single-nucleotide polymorphisms of the TSLP and IL-33 gene and risk of asthma, it will be important to understand which subsets of asthma patients will benefit most from anti-alarmin therapy.
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Silvagni E, Missiroli S, Perrone M, Patergnani S, Boncompagni C, Bortoluzzi A, Govoni M, Giorgi C, Alivernini S, Pinton P, Scirè CA. From Bed to Bench and Back: TNF-α, IL-23/IL-17A, and JAK-Dependent Inflammation in the Pathogenesis of Psoriatic Synovitis. Front Pharmacol 2021; 12:672515. [PMID: 34211394 PMCID: PMC8241099 DOI: 10.3389/fphar.2021.672515] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/18/2021] [Indexed: 12/18/2022] Open
Abstract
Psoriatic arthritis (PsA) is a chronic inflammatory immune-mediated disease with a burdensome impact on quality of life and substantial healthcare costs. To date, pharmacological interventions with different mechanisms of action, including conventional synthetic (cs), biological (b), and targeted synthetic (ts) disease-modifying antirheumatic drugs (DMARDs), have been proven efficacious, despite a relevant proportion of failures. The current approach in clinical practice and research is typically "predictive": the expected response is based on stratification according to clinical, imaging, and laboratory data, with a "heuristic" approach based on "trial and error". Several available therapeutic options target the TNF-α pathway, while others are directed against the IL-23/IL-17A axis. Janus kinase inhibitors (JAKis), instead, simultaneously block different pathways, endowing these drugs with a potentially "broad-spectrum" mechanism of action. It is not clear, however, whether targeting a specific pathway (e.g., TNF-α or the IL-23/IL-17 axis) could result in discordant effects over other approaches. In particular, in the case of "refractory to a treatment" patients, other pathways might be hyperactivated, with opposing, synergistic, or redundant biological significance. On the contrary, refractory states could be purely resistant to treatment as a whole. Since chronic synovitis is one of the primary targets of inflammation in PsA, synovial biomarkers could be useful in depicting specific biological characteristics of the inflammatory burden at the single-patient level, and despite not yet being implemented in clinical practice, these biomarkers might help in selecting the proper treatment. In this narrative review, we will provide an up-to-date overview of the knowledge in the field of psoriatic synovitis regarding studies investigating the relationships among different activated proinflammatory processes suitable for targeting by different available drugs. The final objective is to clarify the state of the art in the field of personalized medicine for psoriatic disease, aiming at moving beyond the current treatment schedules toward a patient-centered approach.
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Affiliation(s)
- Ettore Silvagni
- Rheumatology Unit, Department of Medical Sciences, Università degli Studi di Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona, Italy
| | - Sonia Missiroli
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Mariasole Perrone
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Simone Patergnani
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Caterina Boncompagni
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Alessandra Bortoluzzi
- Rheumatology Unit, Department of Medical Sciences, Università degli Studi di Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona, Italy
| | - Marcello Govoni
- Rheumatology Unit, Department of Medical Sciences, Università degli Studi di Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona, Italy
| | - Carlotta Giorgi
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Stefano Alivernini
- Rheumatology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Paolo Pinton
- Department of Medical Sciences, Section of Experimental Medicine, Laboratory for Technologies of Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Carlo Alberto Scirè
- Rheumatology Unit, Department of Medical Sciences, Università degli Studi di Ferrara and Azienda Ospedaliero-Universitaria S. Anna, Cona, Italy
- Epidemiology Research Unit, Italian Society for Rheumatology, Milan, Italy
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5
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Dual interleukin-17A/F deficiency protects against acute and chronic response to cigarette smoke exposure in mice. Sci Rep 2021; 11:11508. [PMID: 34075087 PMCID: PMC8169846 DOI: 10.1038/s41598-021-90853-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/18/2021] [Indexed: 12/19/2022] Open
Abstract
IL-17A and IL-17F are both involved in the pathogenesis of neutrophilic inflammation observed in COPD and severe asthma. To explore this, mice deficient in both Il17a and Il17f and wild type (WT) mice were exposed to cigarette smoke or environmental air for 5 to 28 days and changes in inflammatory cells in bronchoalveolar lavage (BAL) fluid were determined. We also measured the mRNA expression of keratinocyte derived chemokine (Kc), macrophage inflammatory protein-2 (Mip2), granulocyte–macrophage colony stimulating factor (Gmcsf) and matrix metalloproteinase-9 (Mmp9 ) in lung tissue after 8 days, and lung morphometric changes after 24 weeks of exposure to cigarette smoke compared to air-exposed control animals. Macrophage counts in BAL fluid initially peaked at day 8 and again on day 28, while neutrophil counts peaked between day 8 and 12 in WT mice. Mice dual deficient with Il17a and 1l17f showed similar kinetics with macrophages and neutrophils, but cell numbers at day 8 and mRNA expression of Kc, Gmcsf and Mmp9 were significantly reduced. Furthermore, airspaces in WT mice became larger after cigarette smoke exposure for 24 weeks, whereas this was not seen dual Il17a and 1l17f deficient mice. Combined Il17a and Il17f deficiency resulted in significant attenuation of neutrophilic inflammatory response and protection against structural lung changes after long term cigarette smoke exposure compared with WT mice. Dual IL-17A/F signalling plays an important role in pro-inflammatory responses associated with histological changes induced by cigarette smoke exposure.
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He R, Wu S, Gao R, Chen J, Peng Q, Hu H, Zhu L, Du Y, Sun W, Ma X, Zhang H, Cui Z, Wang H, Martin BN, Wang Y, Zhang CJ, Wang C. Identification of a Long Noncoding RNA TRAF3IP2-AS1 as Key Regulator of IL-17 Signaling through the SRSF10-IRF1-Act1 Axis in Autoimmune Diseases. THE JOURNAL OF IMMUNOLOGY 2021; 206:2353-2365. [PMID: 33941656 DOI: 10.4049/jimmunol.2001223] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 03/16/2021] [Indexed: 01/25/2023]
Abstract
IL-17A plays an essential role in the pathogenesis of many autoimmune diseases, including psoriasis and multiple sclerosis. Act1 is a critical adaptor in the IL-17A signaling pathway. In this study, we report that an anti-sense long noncoding RNA, TRAF3IP2-AS1, regulates Act1 expression and IL-17A signaling by recruiting SRSF10, which downregulates the expression of IRF1, a transcriptional factor of Act1. Interestingly, we found that a psoriasis-susceptible variant of TRAF3IP2-AS1 A4165G (rs13210247) is a gain-of-function mutant. Furthermore, we identified a mouse gene E130307A14-Rik that is homologous to TRAF3IP2-AS1 and has a similar ability to regulate Act1 expression and IL-17A signaling. Importantly, treatment with lentiviruses expressing E130307A14-Rik or SRSF10 yielded therapeutic effects in mouse models of psoriasis and experimental autoimmune encephalomyelitis. These findings suggest that TRAF3IP2-AS1 and/or SRSF10 may represent attractive therapeutic targets in the treatment of IL-17-related autoimmune diseases, such as psoriasis and multiple sclerosis.
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Affiliation(s)
- Ruirui He
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Songfang Wu
- Shanghai Xuhui Central Hospital/Zhongshan-Xuhui Hospital, Fudan University, Shanghai, People's Republic of China.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Ru Gao
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jianwen Chen
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Qianwen Peng
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Huijun Hu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Liwen Zhu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, National Research Center for Translational Medicine at Shanghai, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yanyun Du
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Wanwei Sun
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaojian Ma
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Huazhi Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Zhihui Cui
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Heping Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Bradley N Martin
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Yueying Wang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, National Research Center for Translational Medicine at Shanghai, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Cun-Jin Zhang
- Department of Neurology of Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, China
| | - Chenhui Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China .,Wuhan Institute of Biotechnology, Wuhan, China
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7
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Borowczyk J, Shutova M, Brembilla NC, Boehncke WH. IL-25 (IL-17E) in epithelial immunology and pathophysiology. J Allergy Clin Immunol 2021; 148:40-52. [PMID: 33485651 DOI: 10.1016/j.jaci.2020.12.628] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023]
Abstract
IL-25, also known as IL-17E, is a unique cytokine of the IL-17 family. Indeed, IL-25 exclusively was shown to strongly induce expression of the cytokines associated with type 2 immunity. Although produced by several types of immune cells, such as T cells, dendritic cells, or group 2 innate lymphoid cells, a vast amount of IL-25 derives from epithelial cells. The functions of IL-25 have been actively studied in the context of physiology and pathology of various organs including skin, airways and lungs, gastrointestinal tract, and thymus. Accumulating evidence suggests that IL-25 is a "barrier surface" cytokine whose expression depends on extrinsic environmental factors and when upregulated may lead to inflammatory disorders such as atopic dermatitis, psoriasis, or asthma. This review summarizes the progress of the recent years regarding the effects of IL-25 on the regulation of immune response and the balance between its homeostatic and pathogenic role in various epithelia. We revisit IL-25's general and tissue-specific mechanisms of action, mediated signaling pathways, and transcription factors activated in immune and resident cells. Finally, we discuss perspectives of the IL-25-based therapies for inflammatory disorders and compare them with the mainstream ones that target IL-17A.
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Affiliation(s)
- Julia Borowczyk
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Maria Shutova
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | | | - Wolf-Henning Boehncke
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland; Division of Dermatology and Venereology, University Hospitals of Geneva, Geneva, Switzerland.
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8
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Puerta-Arias JD, Mejía SP, González Á. The Role of the Interleukin-17 Axis and Neutrophils in the Pathogenesis of Endemic and Systemic Mycoses. Front Cell Infect Microbiol 2020; 10:595301. [PMID: 33425780 PMCID: PMC7793882 DOI: 10.3389/fcimb.2020.595301] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/13/2020] [Indexed: 01/08/2023] Open
Abstract
Systemic and endemic mycoses are considered life-threatening respiratory diseases which are caused by a group of dimorphic fungal pathogens belonging to the genera Histoplasma, Coccidioides, Blastomyces, Paracoccidioides, Talaromyces, and the newly described pathogen Emergomyces. T-cell mediated immunity, mainly T helper (Th)1 and Th17 responses, are essential for protection against these dimorphic fungi; thus, IL-17 production is associated with neutrophil and macrophage recruitment at the site of infection accompanied by chemokines and proinflammatory cytokines production, a mechanism that is mediated by some pattern recognition receptors (PRRs), including Dectin-1, Dectine-2, TLRs, Mannose receptor (MR), Galectin-3 and NLPR3, and the adaptor molecules caspase adaptor recruitment domain family member 9 (Card9), and myeloid differentiation factor 88 (MyD88). However, these PRRs play distinctly different roles for each pathogen. Furthermore, neutrophils have been confirmed as a source of IL-17, and different neutrophil subsets and neutrophil extracellular traps (NETs) have also been described as participating in the inflammatory process in these fungal infections. However, both the Th17/IL-17 axis and neutrophils appear to play different roles, being beneficial mediating fungal controls or detrimental promoting disease pathologies depending on the fungal agent. This review will focus on highlighting the role of the IL-17 axis and neutrophils in the main endemic and systemic mycoses: histoplasmosis, coccidioidomycosis, blastomycosis, and paracoccidioidomycosis.
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Affiliation(s)
- Juan David Puerta-Arias
- Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas (CIB), Universidad de Antioquia, Medellín, Colombia.,School of Health Sciences, Universidad Pontificia Bolivariana, Medellín, Colombia
| | - Susana P Mejía
- Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas (CIB), Universidad de Antioquia, Medellín, Colombia.,Max Planck Tandem Group in Nanobioengineering, Universidad de Antioquia, Medellin, Colombia
| | - Ángel González
- Basic and Applied Microbiology Research Group (MICROBA), School of Microbiology, Universidad de Antioquia, Medellin, Colombia
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Algood HMS. T Cell Cytokines Impact Epithelial Cell Responses during Helicobacter pylori Infection. THE JOURNAL OF IMMUNOLOGY 2020; 204:1421-1428. [PMID: 32152211 DOI: 10.4049/jimmunol.1901307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/08/2019] [Indexed: 12/24/2022]
Abstract
The goal of this Brief Review is to highlight literature that demonstrates how cytokines made by T lymphocytes impact the gastric epithelium, especially during Helicobacter pylori infection. These cytokines effect many of the diverse functions of the epithelium and the epithelium's interactions with H. pylori The focal point of this Brief Review will be on how T cell cytokines impact antimicrobial function and barrier function and how T cell cytokines influence the development and progression of cancer. Furthermore, the modulation of epithelial-derived chemokines by H. pylori infection will be discussed.
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Affiliation(s)
- Holly M Scott Algood
- Veterans Affairs Tennessee Valley Healthcare Services, Nashville, TN 37212; Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37212; and Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37212
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10
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McGowan J, Peter C, Kim J, Popli S, Veerman B, Saul-McBeth J, Conti H, Pruett-Miller SM, Chattopadhyay S, Chakravarti R. 14-3-3ζ-TRAF5 axis governs interleukin-17A signaling. Proc Natl Acad Sci U S A 2020; 117:25008-25017. [PMID: 32968020 PMCID: PMC7547158 DOI: 10.1073/pnas.2008214117] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
IL-17A is a therapeutic target in many autoimmune diseases. Most nonhematopoietic cells express IL-17A receptors and respond to extracellular IL-17A by inducing proinflammatory cytokines. The IL-17A signal transduction triggers two broad, TRAF6- and TRAF5-dependent, intracellular signaling pathways to produce representative cytokines (IL-6) and chemokines (CXCL-1), respectively. Our limited understanding of the cross-talk between these two branches has generated a crucial gap of knowledge, leading to therapeutics indiscriminately blocking IL-17A and global inhibition of its target genes. In previous work, we discovered an elevated expression of 14-3-3 proteins in inflammatory aortic disease, a rare human autoimmune disorder with increased levels of IL-17A. Here we report that 14-3-3ζ is essential for IL-17 signaling by differentially regulating the signal-induced IL-6 and CXCL-1. Using genetically manipulated human and mouse cells, and ex vivo and in vivo rat models, we uncovered a function of 14-3-3ζ. As a part of the molecular mechanism, we show that 14-3-3ζ interacts with several TRAF proteins; in particular, its interaction with TRAF5 and TRAF6 is increased in the presence of IL-17A. In contrast to TRAF6, we found TRAF5 to be an endogenous suppressor of IL-17A-induced IL-6 production, an effect countered by 14-3-3ζ. Furthermore, we observed that 14-3-3ζ interaction with TRAF proteins is required for the IL-17A-induced IL-6 levels. Together, our results show that 14-3-3ζ is an essential component of IL-17A signaling and IL-6 production, an effect that is suppressed by TRAF5. To the best of our knowledge, this report of the 14-3-3ζ-TRAF5 axis, which differentially regulates IL-17A-induced IL-6 and CXCL-1 production, is unique.
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Affiliation(s)
- Jenna McGowan
- Department of Physiology & Pharmacology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Cara Peter
- Department of Physiology & Pharmacology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Joshua Kim
- Department of Physiology & Pharmacology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Sonam Popli
- Department of Medical Microbiology & Immunology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Brent Veerman
- Department of Physiology & Pharmacology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Jessica Saul-McBeth
- Department of Biological Sciences, College of Natural Sciences & Mathematics, University of Toledo, Toledo, OH 43614
| | - Heather Conti
- Department of Biological Sciences, College of Natural Sciences & Mathematics, University of Toledo, Toledo, OH 43614
| | - Shondra M Pruett-Miller
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38105
| | - Saurabh Chattopadhyay
- Department of Medical Microbiology & Immunology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614
| | - Ritu Chakravarti
- Department of Physiology & Pharmacology, College of Medicine & Life Sciences, University of Toledo, Toledo, OH 43614;
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Bai W, Wang Q, Deng Z, Li T, Xiao H, Wu Z. TRAF1 suppresses antifungal immunity through CXCL1-mediated neutrophil recruitment during Candida albicans intradermal infection. Cell Commun Signal 2020; 18:30. [PMID: 32093731 PMCID: PMC7038620 DOI: 10.1186/s12964-020-00532-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 02/13/2020] [Indexed: 02/07/2023] Open
Abstract
Background Candida albicans is the most common opportunistic human fungal pathogen. The chemokine ligand CXCL1 plays a protective role in fungal infection through the recruitment of neutrophils. TRAF1 (tumor necrosis factor-associated factor 1) can be highly induced by proinflammatory stimuli such as LPS and TNF and has been implicated in septic shock. However, the role of TRAF1 in infection, especially fungal infection, remains elusive. Herein, we reveal that TRAF1 suppresses the antifungal immune response to Candida albicans intradermal infection through the regulation of CXCL1 induction and neutrophil recruitment. Methods A mouse model of C. albicans intradermal infection was established. The Traf1−/− mice and Traf1−/− immortalized human keratinocytes were generated. The p65 inhibitor triptolide, STAT1 inhibitor fludarabine, neutrophil-depletion antibody Ly6G, and neutralizing antibody for CXCL1 were utilized. The expression of proinflammatory cytokines and chemokines was assessed by real-time PCR and ELISA, and the activation of signaling molecules was analyzed by Western blotting. Hematoxylin and eosin staining and periodic acid Schiff staining were used for histology or fungal detection, respectively. The immunofluorescence and flow cytometry analyses were employed in the assessment of immune cell infiltration. Bone marrow transplantation and adoptive transfer experiments were conducted to establish a role for TRAF1 in the macrophage compartment in fungal skin infection. Results TRAF1-deficient mice demonstrated improved control of Candida albicans intradermal infection, and concomitant increase in neutrophil recruitment and reduction in fungal burden. The chemokine CXCL1 was upregulated in the TRAF1-deficient macrophages treated with heat-killed C. albicans. Mechanistically, TRAF1-deficient macrophages showed increased activation of transcription factor NFκB p65. The human CXCL8 was also highly induced in the TRAF1-deficient human keratinocytes upon TNF stimulation through decreasing the activation of transcription factor STAT1. TRAF1-deficient macrophages played a critical role in containing the C. albicans skin infection in vivo. Conclusion TRAF1-deficient mice can better control fungal infection in the skin, a process attributable to the CXCL-neutrophil axis. Mechanistically, TRAF1 likely regulates CXCL1 expression in both macrophages and keratinocytes through the transcriptional factor NFκB and STAT1, respectively. Our finding offers new insight into the understanding of the immune regulatory mechanisms in host defense against C. albicans infection. Graphical abstract ![]()
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Affiliation(s)
- Wenjuan Bai
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center,
- Guangzhou Medical University, 9 Jinsui Road, Guangzhou, Guangdong, 510120, People's Republic of China.,Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, People's Republic of China
| | - Qingqing Wang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, People's Republic of China
| | - Zihou Deng
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, People's Republic of China
| | - Tiantian Li
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, People's Republic of China
| | - Hui Xiao
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, People's Republic of China
| | - Zhiyuan Wu
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center,
- Guangzhou Medical University, 9 Jinsui Road, Guangzhou, Guangdong, 510120, People's Republic of China.
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12
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Swaidani S, Liu C, Zhao J, Bulek K, Li X. TRAF Regulation of IL-17 Cytokine Signaling. Front Immunol 2019; 10:1293. [PMID: 31316496 PMCID: PMC6610456 DOI: 10.3389/fimmu.2019.01293] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/21/2019] [Indexed: 01/23/2023] Open
Abstract
Tumor necrosis factor receptor (TNFR)-associated factors or (TRAFs) are important mediators of Interleukin-17 (IL-17) cytokine signaling and contribute to driving tissue responses that are crucial for protective immunity but are often implicated in immunopathology. By amplifying tissue immune activity, IL-17 cytokine pathways contribute to maintaining barrier function as well as activation of innate and adaptive immunity necessary for host defense. IL-17 receptors signaling is orchestrated in part, by the engagement of TRAFs and the subsequent unlocking of downstream cellular machinery that can promote pathogen clearance or contribute to immune dysregulation, chronic inflammation, and disease. Originally identified as signaling adaptors for TNFR superfamily, TRAF proteins can mediate the signaling of a variety of intercellular and extracellular stimuli and have been shown to regulate the downstream activity of many cytokine receptors including receptors for IL-1β, IL-2, IL-6, IL-17, IL-18, IL-33, type I IFNs, type III IFNs, GM-CSF, M-CSF, and TGF-β Toll-like receptors (TLRs), NOD-like receptors (NLRs), RIG-I- like receptors, and C-type lectin receptors. This review will focus on discussing studies that reveal our current understanding of how TRAFs mediate and regulate biochemical activities downstream of the IL-17 cytokines signaling.
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Affiliation(s)
- Shadi Swaidani
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States.,Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Caini Liu
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Junjie Zhao
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Katarzyna Bulek
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Xiaoxia Li
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
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13
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Qi Y, Zhao X, Chen J, Pradipta AR, Wei J, Ruan H, Zhou L, Hsung RP, Tanaka K. In vitro and in vivo cancer cell apoptosis triggered by competitive binding of Cinchona alkaloids to the RING domain of TRAF6. Biosci Biotechnol Biochem 2019; 83:1011-1026. [DOI: 10.1080/09168451.2018.1559030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
ABSTRACT
TRAF6 is highly expressed in many tumors and plays an important role in the immune system. The aim of this study is to confirm anti-tumor activities of all naturally occurring Cinchona alkaloids that have been screened using computational docking program, and to validate the accuracy and specificity of the RING domain of TRAF6 as a potential anti-tumor target, and to explore their effect on the immune system. Results reported herein would demonstrate that Cinchona alkaloids could induce apoptosis in HeLa cells, inhibit the ubiquitination and phosphorylation of both AKT and TAK1, and up-regulate the ratio of Bax/Bcl-2. In addition, these compounds could induce apoptosis in vivo, and increase the secretion of TNF-α, IFN-γ, and IgG, while not significantly impacting the ratio of CD4+T/CD8+T. These investigations suggest that the RING domain of TRAF6 could serve as a de novo biological target for therapeutic treatment in cancers.
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Affiliation(s)
- Yonghao Qi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Xuan Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Jiaying Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Ambara R Pradipta
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, Wako, Saitama, Japan
| | - Jing Wei
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Haihua Ruan
- Tianjin University of Commerce, Tianjin, P.R. China
| | - Lijun Zhou
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Richard P Hsung
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI, USA
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, Wako, Saitama, Japan
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI, USA
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, Kazan, Russia
- JST-PRESTO, Wako, Saitama, Japan
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14
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Dainichi T, Matsumoto R, Mostafa A, Kabashima K. Immune Control by TRAF6-Mediated Pathways of Epithelial Cells in the EIME (Epithelial Immune Microenvironment). Front Immunol 2019; 10:1107. [PMID: 31156649 PMCID: PMC6532024 DOI: 10.3389/fimmu.2019.01107] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/01/2019] [Indexed: 12/13/2022] Open
Abstract
In the protective responses of epithelial tissues, not only immune cells but also non-immune cells directly respond to external agents. Epithelial cells can be involved in the organization of immune responses through two phases. First, the exogenous harmful agents trigger the primary responses of the epithelial cells leading to various types of immune cell activation. Second, cytokines produced by the immune cells that are activated directly by the external agents and indirectly by the epithelial cell products elicit the secondary responses giving rise to further propagation of immune responses. TRAF6 is a ubiquitin E3 ligase, which intermediates between various types of receptors for exogenous agents or endogenous mediators and activation of subsequent transcriptional responses via NF-kappaB and MAPK pathways. TRAF6 ubiquitously participates in many protective responses in immune and non-immune cells. Particularly, epithelial TRAF6 has an essential role in the primary and secondary responses via driving type 17 response in psoriatic inflammation of the skin. Consistently, many psoriasis susceptibility genes encode the TRAF6 signaling players, such as ACT1 (TRAF3IP2), A20 (TNFAIP3), ABIN1 (TNIP1), IL-36Ra (IL36RN), IkappaBzeta (NFKBIZ), and CARD14. Herein, we describe the principal functions of TRAF6, especially in terms of positive and regulatory immune controls by interaction between immune cells and epithelial cells. In addition, we discuss how TRAF6 in the epithelial cells can organize the differentiation of immune responses and drive inflammatory loops in the epithelial immune microenvironment, which is termed EIME.
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Affiliation(s)
- Teruki Dainichi
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Reiko Matsumoto
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Alshimaa Mostafa
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Dermatology, Beni-Suef University, Beni-Suef, Egypt
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore, Singapore
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15
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Interleukin-Mediated Pendrin Transcriptional Regulation in Airway and Esophageal Epithelia. Int J Mol Sci 2019; 20:ijms20030731. [PMID: 30744098 PMCID: PMC6386862 DOI: 10.3390/ijms20030731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/29/2019] [Accepted: 01/29/2019] [Indexed: 12/28/2022] Open
Abstract
Pendrin (SLC26A4), a Cl−/anion exchanger, is expressed at high levels in kidney, thyroid, and inner ear epithelia, where it has an essential role in bicarbonate secretion/chloride reabsorption, iodide accumulation, and endolymph ion balance, respectively. Pendrin is expressed at lower levels in other tissues, such as airways and esophageal epithelia, where it is transcriptionally regulated by the inflammatory cytokines interleukin (IL)-4 and IL-13 through a signal transducer and activator of transcription 6 (STAT6)-mediated pathway. In the airway epithelium, increased pendrin expression during inflammatory diseases leads to imbalances in airway surface liquid thickness and mucin release, while, in the esophageal epithelium, dysregulated pendrin expression is supposed to impact the intracellular pH regulation system. In this review, we discuss some of the recent findings on interleukin-mediated transcriptional regulation of pendrin and how this dysregulation impacts airway and esophagus epithelial homeostasis during inflammatory diseases.
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16
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Robert M, Miossec P. IL-17 in Rheumatoid Arthritis and Precision Medicine: From Synovitis Expression to Circulating Bioactive Levels. Front Med (Lausanne) 2019; 5:364. [PMID: 30693283 PMCID: PMC6339915 DOI: 10.3389/fmed.2018.00364] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 12/24/2018] [Indexed: 12/17/2022] Open
Abstract
Interleukin (IL)-17A has a direct contribution in early induction and late chronic stages of various inflammatory diseases. In vitro and in vivo experiments have first characterized its local effects on different cell types and then its systemic effects. For instance, IL-17 axis is now identified as a key driver of psoriasis through its effects on keratinocytes. Similar observations apply for rheumatoid arthritis (RA) where IL-17A triggers changes in the synovium that lead to synovitis and maintain local inflammation. These results have prompted the development of biologics to target this cytokine. However, while convincing studies are reported on the efficacy of IL-17 inhibitors in psoriasis, there are conflicting results in RA. Patient heterogeneity but also the involvement of mediators that regulate IL-17 function may explain these results. Therefore, new tools and concepts are required to identify patients that could benefit from these IL-17 targeted therapies in RA and the development of predictive biomarkers of response has started with the emergence of various bioassays. Current strategies are also focusing on synovial biopsies that may be used to stratify patients. From local to systemic levels, new approaches are developing and move the field of RA management into the era of precision medicine.
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Affiliation(s)
- Marie Robert
- Department of Clinical Immunology and Rheumatology, Immunogenomics and Inflammation Research Unit EA 4130, University of Lyon 1, Hôpital Edouard Herriot, Lyon, France
| | - Pierre Miossec
- Department of Clinical Immunology and Rheumatology, Immunogenomics and Inflammation Research Unit EA 4130, University of Lyon 1, Hôpital Edouard Herriot, Lyon, France
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17
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Chen X, Cai G, Liu C, Zhao J, Gu C, Wu L, Hamilton TA, Zhang CJ, Ko J, Zhu L, Qin J, Vidimos A, Koyfman S, Gastman BR, Jensen KB, Li X. IL-17R-EGFR axis links wound healing to tumorigenesis in Lrig1 + stem cells. J Exp Med 2018; 216:195-214. [PMID: 30578323 PMCID: PMC6314525 DOI: 10.1084/jem.20171849] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 04/10/2018] [Accepted: 10/23/2018] [Indexed: 12/31/2022] Open
Abstract
This study provides mechanistic insight into how IL-17 receptor adopts EGFR to activate ERK5 axis in Lrig1+ stem cells for their proliferation and migration during wounding healing and tumorigenesis. Lrig1 marks a distinct population of stem cells restricted to the upper pilosebaceous unit in normal epidermis. Here we report that IL-17A–mediated activation of EGFR plays a critical role in the expansion and migration of Lrig1+ stem cells and their progenies in response to wounding, thereby promoting wound healing and skin tumorigenesis. Lrig1-specific deletion of the IL-17R adaptor Act1 or EGFR in mice impairs wound healing and reduces tumor formation. Mechanistically, IL-17R recruits EGFR for IL-17A–mediated signaling in Lrig1+ stem cells. While TRAF4, enriched in Lrig1+ stem cells, tethers IL-17RA and EGFR, Act1 recruits c-Src for IL-17A–induced EGFR transactivation and downstream activation of ERK5, which promotes the expansion and migration of Lrig1+ stem cells. This study demonstrates that IL-17A activates the IL-17R–EGFR axis in Lrig1+ stem cells linking wound healing to tumorigenesis.
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Affiliation(s)
- Xing Chen
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Gang Cai
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH.,Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Caini Liu
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Junjie Zhao
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Chunfang Gu
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH.,National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Ling Wu
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH.,Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH
| | - Thomas A Hamilton
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Cun-Jin Zhang
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Jennifer Ko
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH.,Department of Anatomical Pathology, Cleveland Clinic, Cleveland, OH
| | - Liang Zhu
- Department of Molecular Cardiology, Cleveland Clinic, Cleveland, OH
| | - Jun Qin
- Department of Molecular Cardiology, Cleveland Clinic, Cleveland, OH
| | | | - Shlomo Koyfman
- Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH
| | - Brian R Gastman
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH.,Department of Dermatology, Cleveland Clinic, Cleveland, OH.,Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH
| | - Kim B Jensen
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Biotech Research & Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | - Xiaoxia Li
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
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18
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Schmidt T, Luebbe J, Paust HJ, Panzer U. Mechanisms and functions of IL-17 signaling in renal autoimmune diseases. Mol Immunol 2018; 104:90-99. [PMID: 30448610 DOI: 10.1016/j.molimm.2018.09.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/31/2018] [Accepted: 09/07/2018] [Indexed: 12/27/2022]
Abstract
Immune-mediated glomerular diseases (glomerulonephritis) encompass a heterogeneous collection of diseases that cause inflammation within the glomerulus and other renal compartments with significant morbidity and mortality. In general, CD4+ T cells orchestrate the immune response and play a unique role in autoimmune and chronic inflammatory diseases. In particular, the characterization of a distinct, IL-17 cytokines producing CD4+ T cell subset named TH17 cells has significantly advanced the current understanding of the pathogenic mechanisms of organ-specific immunity. Our group and others have shown that the recruitment of TH17 cells to the inflamed kidney drives renal tissue injury in experimental and possibly human crescentic glomerulonephritis (GN), but much remains to be understood about the biological functions, regulation, and signaling pathways of the TH17/IL-17 axis leading to organ damage. Here we review our current knowledge about the mechanisms and functions of IL-17 signaling in renal autoimmune diseases, with a special focus on experimental and human crescentic GN.
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Affiliation(s)
- Tilman Schmidt
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jonas Luebbe
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Section of Translational Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hans-Joachim Paust
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Section of Translational Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ulf Panzer
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Section of Translational Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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19
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Amatya N, Childs EE, Cruz JA, Aggor FEY, Garg AV, Berman AJ, Gudjonsson JE, Atasoy U, Gaffen SL. IL-17 integrates multiple self-reinforcing, feed-forward mechanisms through the RNA binding protein Arid5a. Sci Signal 2018; 11:eaat4617. [PMID: 30301788 PMCID: PMC6188668 DOI: 10.1126/scisignal.aat4617] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Interleukin-17A (IL-17A) not only stimulates immunity to fungal pathogens but also contributes to autoimmune pathology. IL-17 is only a modest activator of transcription in experimental tissue culture settings. However, IL-17 controls posttranscriptional events that enhance the expression of target mRNAs. Here, we showed that the RNA binding protein (RBP) Arid5a (AT-rich interactive domain-containing protein 5a) integrated multiple IL-17-driven signaling pathways through posttranscriptional control of mRNA. IL-17 induced expression of Arid5a, which was recruited to the adaptor TRAF2. Arid5a stabilized IL-17-induced cytokine transcripts by binding to their 3' untranslated regions and also counteracted mRNA degradation mediated by the endoribonuclease MCPIP1 (Regnase-1). Arid5a inducibly associated with the eukaryotic translation initiation complex and facilitated the translation of the transcription factors (TFs) IκBζ (Nfkbiz ) and C/EBPβ (Cebpb). These TFs in turn transactivated IL-17-dependent promoters. Together, these data indicated that Arid5a orchestrates a feed-forward amplification loop, which promoted IL-17 signaling by controlling mRNA stability and translation.
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Affiliation(s)
- Nilesh Amatya
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Erin E Childs
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - J Agustin Cruz
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Felix E Y Aggor
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Abhishek V Garg
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Andrea J Berman
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Johann E Gudjonsson
- Department of Dermatology, Taubman Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ulus Atasoy
- Division of Allergy and Immunology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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20
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Alves JJP, De Medeiros Fernandes TAA, De Araújo JMG, Cobucci RNO, Lanza DCF, Bezerra FL, Andrade VS, Fernandes JV. Th17 response in patients with cervical cancer. Oncol Lett 2018; 16:6215-6227. [PMID: 30405758 PMCID: PMC6202464 DOI: 10.3892/ol.2018.9481] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 08/07/2018] [Indexed: 12/21/2022] Open
Abstract
Persistent infection by high-risk human papillomavirus (HR-HPV) is the main risk factor for uterine cervical cancer (UCC). However, viral infection alone is not sufficient for the development and progression of premalignant cervical lesions for cancer. In previous years it has been suggested that the adaptive immune response triggered by the differentiation of naïve helper T cells in Th17 cells may serve an important role in disease development. It has been hypothesized that Th17 cells may be involved in the promotion of UCC, as high levels of interleukin 17 (IL17) expression have been detected in the mucosa of the uterine cervix of patients affected by the disease. However, the role of Th17 cells in the tumor development and progression remains unclear. It is believed that the immune response of the Th17 type during persistent infection of the genital tract with HR-HPV triggers chronic inflammation with a long duration with the production of IL17 and other pro-inflammatory cytokines, creating a favorable environment for tumor development. These cytokines are produced by immune system cells in addition to tumor cells and appear to function by modulating the host immune system, resulting in an immunosuppressive response as opposed to inducing an effective protective immune response, thus contributing to the growth and progression of the tumor. In the present review, the latest advances are presented about the function of Th17 cells and the cytokines produced by them in the development and progression of UCC.
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Affiliation(s)
- Jayra Juliana Paiva Alves
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
| | | | | | | | | | - Fabiana Lima Bezerra
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
| | - Vânia Sousa Andrade
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
| | - José Veríssimo Fernandes
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
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21
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IL-17-receptor-associated adaptor Act1 directly stabilizes mRNAs to mediate IL-17 inflammatory signaling. Nat Immunol 2018; 19:354-365. [PMID: 29563620 PMCID: PMC6082628 DOI: 10.1038/s41590-018-0071-9] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 02/16/2018] [Indexed: 12/15/2022]
Abstract
Mechanisms that degrade inflammatory mRNAs are well-known, however
stabilizing mechanisms are poorly understood. Here we show that Act1, an
interleukin-17 (IL-17) receptor complex adaptor, binds and stabilizes mRNAs
encoding key inflammatory proteins. The Act1 SEFIR domain binds a stem-loop
structure, SBE (SEFIR-binding element), in the inflammatory chemokine
Cxcl1 3’ UTR. mRNA-bound Act1 directs formation of
three compartmentally-distinct protein-RNA complexes (RNPs) that regulate three
disparate events in inflammatory mRNA metabolism: preventing mRNA decay in the
nucleus, inhibiting mRNA decapping in P-bodies, and promoting translation. SBE
RNA aptamers reduced IL-17-mediated mRNA stabilization in
vitro, IL-17-induced skin inflammation and airway inflammation in a
mouse asthma model, providing a therapeutic strategy for autoimmune diseases.
These results reveal a network in which Act1 assembles RNPs on the 3’
UTRs of select mRNAs to control receptor-mediated mRNA stabilization and
translation during inflammation.
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22
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Gurczynski SJ, Moore BB. IL-17 in the lung: the good, the bad, and the ugly. Am J Physiol Lung Cell Mol Physiol 2017; 314:L6-L16. [PMID: 28860146 DOI: 10.1152/ajplung.00344.2017] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The IL-17 family of cytokines has emerged over the last two decades as a pleiotropic group of molecules that function in a wide variety of both beneficial and detrimental (pathological) processes, mainly in mucosal barrier tissue. The beneficial effects of IL-17 expression are especially important in the lung, where exposure to foreign agents is abundant. IL-17A plays an important role in protection from both extracellular bacteria and fungi, as well as viruses that infect cells of the mucosal tracts. IL-17 coregulated cytokines, such as IL-22, are involved in maintaining epithelial cell homeostasis and participate in epithelial cell repair/regeneration following inflammatory insults. Thus, the IL-17/IL-22 axis is important in both responding to, and recovering from, pathogens. However, aberrant expression or overexpression of IL-17 cytokines contributes to a number of pathological outcomes, including asthma, pneumonitis, and generation or exacerbation of pulmonary fibrosis. This review covers the good, bad, and ugly aspects of IL-17 in the lung.
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Affiliation(s)
- Stephen J Gurczynski
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan , Ann Arbor, Michigan
| | - Bethany B Moore
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan , Ann Arbor, Michigan.,Department of Microbiology and Immunology, University of Michigan , Ann Arbor, Michigan
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23
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Li M, Qi Y, Wei J, Lu L, Zhao X, Zhou L. N6-Isopentenyladenosine promoted HeLa cell apoptosis through inhibitions of AKT and transforming growth factor β-activated kinase 1 activation. Tumour Biol 2017; 39:1010428317695966. [PMID: 28345459 DOI: 10.1177/1010428317695966] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
N6-Isopentenyladenosine, a member of the family of plant hormones, possesses anti-cancer activities on a number of cancer cell lines. However, its mode of action in cervical cancer cell remains poorly understood. Our computational docking studies showed that N6-Isopentenyladenosine could bind with the really interesting new gene domain of tumor necrosis factor receptor-associated factor 6, which is an ubiquitination E3 ligase. Tumor necrosis factor receptor-associated factor 6-mediated ubiquitination is known to activate both protein kinase B (also known as AKT) and transforming growth factor β-activated kinase 1, and the really interesting new gene domain comprises the core of the ubiquitin ligase catalytic domain. First, we evaluated the effects of iPA on cervical cancer cell line HeLa using MTT and flow cytometry. Second, we examined the effects of iPA on activation of tumor necrosis factor receptor-associated factor 6-mediated downstream targets using western blot or immunoprecipitation. iPA could reduce HeLa cell proliferation through apoptosis, and such anti-cancer activity is associated with inhibitions of both AKT and transforming growth factor β-activated kinase 1 signaling pathways. In addition, suppression of the anti-apoptotic protein Bcl-2 and elevation of the pro-apoptotic protein Bax were also observed. Anti-proliferation properties of iPA are likely due to its binding at the really interesting new gene domain of tumor necrosis factor receptor-associated factor 6 and loss of AKT and transforming growth factor β-activated kinase 1 activities as a result of functional modulations of tumor necrosis factor receptor-associated factor 6. These results support the emerging notion that tumor necrosis factor receptor-associated factor 6 could serve as a viable target for developing new cancer therapeutics.
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Affiliation(s)
- Miao Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Yonghao Qi
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Jing Wei
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Lulu Lu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Xuan Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Lijun Zhou
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
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24
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The Role of IL-17 and Related Cytokines in Inflammatory Autoimmune Diseases. Mediators Inflamm 2017; 2017:3908061. [PMID: 28316374 PMCID: PMC5337858 DOI: 10.1155/2017/3908061] [Citation(s) in RCA: 292] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/01/2017] [Indexed: 12/12/2022] Open
Abstract
Interleukin-17 (IL-17) induces the production of granulocyte colony-stimulating factor (G-CSF) and chemokines such as CXCL1 and CXCL2 and is a cytokine that acts as an inflammation mediator. During infection, IL-17 is needed to eliminate extracellular bacteria and fungi, by inducing antimicrobial peptides such as defensin. This cytokine also plays an important role in chronic inflammation that occurs during the pathogenesis of autoimmune diseases and allergies such as human rheumatoid arthritis (RA) for which a mouse model of collagen-induced arthritis (CIA) is available. In autoimmune diseases such as RA and multiple sclerosis (MS), IL-17 is produced by helper T (Th) cells that are stimulated by IL-1β and IL-6 derived from phagocytes such as macrophages and from tissue cells. IL-17 contributes to various lesions that are produced by Th17 cells, one subset of helper T cells, and by γδ T cells and innate lymphoid cells. It strongly contributes to autoimmune diseases that are accompanied by chronic inflammation. Thus, a functional understanding of Th17 cells is extremely important. In this review, we highlight the roles of cytokines that promote the development and maintenance of pathogenic Th17 cells in autoimmune diseases.
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25
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IL-17 Signaling: The Yin and the Yang. Trends Immunol 2017; 38:310-322. [PMID: 28254169 PMCID: PMC5411326 DOI: 10.1016/j.it.2017.01.006] [Citation(s) in RCA: 454] [Impact Index Per Article: 64.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/24/2017] [Accepted: 01/25/2017] [Indexed: 02/06/2023]
Abstract
Interleukin (IL)-17 is the founding member of a novel family of inflammatory cytokines. While the proinflammatory properties of IL-17 are key to its host-protective capacity, unrestrained IL-17 signaling is associated with immunopathology, autoimmune disease, and cancer progression. In this review we discuss both the activators and the inhibitors of IL-17 signal transduction, and also the physiological implications of these events. We highlight the surprisingly diverse means by which these regulators control expression of IL-17-dependent inflammatory genes, as well as the major target cells that respond to IL-17 signaling.
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26
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Velichko S, Zhou X, Zhu L, Anderson JD, Wu R, Chen Y. A Novel Nuclear Function for the Interleukin-17 Signaling Adaptor Protein Act1. PLoS One 2016; 11:e0163323. [PMID: 27723765 PMCID: PMC5056742 DOI: 10.1371/journal.pone.0163323] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 09/07/2016] [Indexed: 12/24/2022] Open
Abstract
In the context of the human airway, interleukin-17A (IL-17A) signaling is associated with severe inflammation, as well as protection against pathogenic infection, particularly at mucosal surfaces such as the airway. The intracellular molecule Act1 has been demonstrated to be an essential mediator of IL-17A signaling. In the cytoplasm, it serves as an adaptor protein, binding to both the intracellular domain of the IL-17 receptor as well as members of the canonical nuclear factor kappa B (NF-κB) pathway. It also has enzymatic activity, and serves as an E3 ubiquitin ligase. In the context of airway epithelial cells, we demonstrate for the first time that Act1 is also present in the nucleus, especially after IL-17A stimulation. Ectopic Act1 expression can also increase the nuclear localization of Act1. Act1 can up-regulate the expression and promoter activity of a subset of IL-17A target genes in the absence of IL-17A signaling in a manner that is dependent on its N- and C-terminal domains, but is NF-κB independent. Finally, we show that nuclear Act1 can bind to both distal and proximal promoter regions of DEFB4, one of the IL-17A responsive genes. This transcriptional regulatory activity represents a novel function for Act1. Taken together, this is the first report to describe a non-adaptor function of Act1 by directly binding to the promoter region of IL-17A responsive genes and directly regulate their transcription.
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Affiliation(s)
- Sharlene Velichko
- The Center for Comparative Respiratory Biology and Medicine, Department of Internal Medicine, University of California Davis, Davis, California, 95616, United States of America
| | - Xu Zhou
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Arizona, Tucson, Arizona, 85721, United States of America
| | - Lingxiang Zhu
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Arizona, Tucson, Arizona, 85721, United States of America
| | - Johnathon David Anderson
- The Center for Comparative Respiratory Biology and Medicine, Department of Internal Medicine, University of California Davis, Davis, California, 95616, United States of America
| | - Reen Wu
- The Center for Comparative Respiratory Biology and Medicine, Department of Internal Medicine, University of California Davis, Davis, California, 95616, United States of America
| | - Yin Chen
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Arizona, Tucson, Arizona, 85721, United States of America
- * E-mail:
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27
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Liu W, Qi Y, Liu L, Tang Y, Wei J, Zhou L. Suppression of tumor cell proliferation by quinine via the inhibition of the tumor necrosis factor receptor‑associated factor 6‑AKT interaction. Mol Med Rep 2016; 14:2171-9. [PMID: 27430155 DOI: 10.3892/mmr.2016.5492] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 04/06/2016] [Indexed: 11/05/2022] Open
Abstract
Protein kinase B (AKT), is a pivotal component of pathways associated with cell survival, metabolism, invasion and metastasis. AKT mediates anti‑apoptotic and proliferative signaling in response to essential cytokines. Tumor necrosis factor receptor‑associated factor (TRAF)6, an E3 ubiquitin ligase, has been shown to ubiquitylate, as well as activate AKT. The present study used computational methods to determine the relevant amino acid residues at the binding site of TRAF6 and selected small molecules, which may bind to TRAF6. An ex vivo assay was performed to determine their antitumor activities and the possible mechanism of action. Quinine, a natural alkaloid that is well‑known for its therapeutic treatment of malaria, exhibited a distinct antiproliferative and pro‑apoptotic effect in HeLa and A549 tumor cell lines via the inhibition of the antiapoptotic protein, B‑cell lymphoma (BCL)‑2, and activation of the pro‑apoptotic factor, BCL‑2‑associated X protein. Quinine inhibited the lipopolysaccharide (LPS)‑induced activation of AKT by inhibiting its phosphorylation at Thr‑308 and Ser‑473, and reversing LPS‑induced proliferation. These results suggested that the inhibition of AKT activation via targeting of TRAF6 with quinine may be a viable anticancer therapeutic approach and a successful example of the alternative use of the original therapeutic properties of this well‑known natural product.
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Affiliation(s)
- Wenjuan Liu
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Yonghao Qi
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Lingyu Liu
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Yu Tang
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Jing Wei
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Lijun Zhou
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
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28
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Hall SL, Baker T, Lajoie S, Richgels PK, Yang Y, McAlees JW, van Lier A, Wills-Karp M, Sivaprasad U, Acciani TH, LeCras TD, Myers JB, Kovacic MB, Lewkowich IP. IL-17A enhances IL-13 activity by enhancing IL-13-induced signal transducer and activator of transcription 6 activation. J Allergy Clin Immunol 2016; 139:462-471.e14. [PMID: 27417023 DOI: 10.1016/j.jaci.2016.04.037] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/22/2016] [Accepted: 04/25/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Increased IL-17A production has been associated with more severe asthma; however, the mechanisms whereby IL-17A can contribute to IL-13-driven pathology in asthmatic patients remain unclear. OBJECTIVE We sought to gain mechanistic insight into how IL-17A can influence IL-13-driven responses. METHODS The effect of IL-17A on IL-13-induced airway hyperresponsiveness, gene expression, mucus hypersecretion, and airway inflammation was assessed by using in vivo models of IL-13-induced lung pathology and in vitro culture of murine fibroblast cell lines and primary fibroblasts and human epithelial cell lines or primary human epithelial cells exposed to IL-13, IL-17A, or both. RESULTS Compared with mice given intratracheal IL-13 alone, those exposed to IL-13 and IL-17A had augmented airway hyperresponsiveness, mucus production, airway inflammation, and IL-13-induced gene expression. In vitro, IL-17A enhanced IL-13-induced gene expression in asthma-relevant murine and human cells. In contrast to the exacerbating influence of IL-17A on IL-13-induced responses, coexposure to IL-13 inhibited IL-17A-driven antimicrobial gene expression in vivo and in vitro. Mechanistically, in both primary human and murine cells, the IL-17A-driven increase in IL-13-induced gene expression was associated with enhanced IL-13-driven signal transducer and activator of transcription 6 activation. CONCLUSIONS Our data suggest that IL-17A contributes to asthma pathophysiology by increasing the capacity of IL-13 to activate intracellular signaling pathways, such as signal transducer and activator of transcription 6. These data represent the first mechanistic explanation of how IL-17A can directly contribute to the pathogenesis of IL-13-driven pathology.
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Affiliation(s)
- Sara L Hall
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Theresa Baker
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Stephane Lajoie
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Md
| | - Phoebe K Richgels
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Yanfen Yang
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jaclyn W McAlees
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Adelaide van Lier
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Marsha Wills-Karp
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Md
| | - Umasundari Sivaprasad
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Thomas H Acciani
- Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Timothy D LeCras
- Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jocelyn Biagini Myers
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Melinda Butsch Kovacic
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ian P Lewkowich
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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29
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The roles and functional mechanisms of interleukin-17 family cytokines in mucosal immunity. Cell Mol Immunol 2016; 13:418-31. [PMID: 27018218 DOI: 10.1038/cmi.2015.105] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 11/21/2015] [Accepted: 11/21/2015] [Indexed: 01/12/2023] Open
Abstract
The mucosal immune system serves as our front-line defense against pathogens. It also tightly maintains immune tolerance to self-symbiotic bacteria, which are usually called commensals. Sensing both types of microorganisms is modulated by signalling primarily through various pattern-recognition receptors (PRRs) on barrier epithelial cells or immune cells. After sensing, proinflammatory molecules such as cytokines are released by these cells to mediate either defensive or tolerant responses. The interleukin-17 (IL-17) family members belong to a newly characterized cytokine subset that is critical for the maintenance of mucosal homeostasis. In this review, we will summarize recent progress on the diverse functions and signals of this family of cytokines at different mucosal edges.
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30
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Wan Q, Zhou Z, Ding S, He J. The miR-30a Negatively Regulates IL-17-Mediated Signal Transduction by Targeting Traf3ip2. J Interferon Cytokine Res 2015; 35:917-23. [PMID: 26376209 DOI: 10.1089/jir.2014.0146] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Interleukin-17 (IL-17) has been proved to be involved in the pathogenesis of several autoimmune diseases, including lupus, rheumatoid arthritis, multiple sclerosis, and inflammatory bowel disease. The regulation of IL-17 signal transduction is less studied. miR-30a has been identified to be downregulated in these human autoimmune diseases and their related animal models. However, how it functions in IL-17-mediated inflammation and the pathogenesis of these diseases remain unknown. In this study, we showed that miR-30a inhibits IL-17-mediated NF-κB and MAPK activation, leading to the reduced production of inflammatory cytokines and chemokines. miR-30a also reduced mRNA stability triggered by IL-17 stimulation. These suppressive effects of miR-30a were mediated by directly targeting Traf3ip2 mRNA (coding for Act1). Thus, we concluded that the downregulation of miR-30a in autoimmune diseases may exacerbate IL-17-mediated inflammation, which may serve as a potential target for the therapy of these diseases.
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Affiliation(s)
- Qun Wan
- 1 State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medical College, Zhejiang University , Hangzhou, Zhejiang Province, People's Republic of China
| | - Zhuo Zhou
- 3 The National Education Base for Basic Medical Sciences, School of Medicine, Zhejiang University , Hangzhou, Zhejiang Province, People's Republic of China
| | - Shiping Ding
- 1 State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medical College, Zhejiang University , Hangzhou, Zhejiang Province, People's Republic of China .,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease , Hangzhou, Zhejiang Province, People's Republic of China .,3 The National Education Base for Basic Medical Sciences, School of Medicine, Zhejiang University , Hangzhou, Zhejiang Province, People's Republic of China
| | - Jianqin He
- 1 State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medical College, Zhejiang University , Hangzhou, Zhejiang Province, People's Republic of China .,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease , Hangzhou, Zhejiang Province, People's Republic of China
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31
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Wu L, Chen X, Zhao J, Martin B, Zepp JA, Ko JS, Gu C, Cai G, Ouyang W, Sen G, Stark GR, Su B, Vines CM, Tournier C, Hamilton TA, Vidimos A, Gastman B, Liu C, Li X. A novel IL-17 signaling pathway controlling keratinocyte proliferation and tumorigenesis via the TRAF4-ERK5 axis. ACTA ACUST UNITED AC 2015; 212:1571-87. [PMID: 26347473 PMCID: PMC4577838 DOI: 10.1084/jem.20150204] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 08/07/2015] [Indexed: 01/04/2023]
Abstract
Wu et al. report a novel IL-17–mediated cascade via the IL-17R–TRAF4–ERK5 axis that directly stimulates keratinocyte proliferation and skin tumor formation in mice. Although IL-17 is emerging as an important cytokine in cancer promotion and progression, the underlining molecular mechanism remains unclear. Previous studies suggest that IL-17 (IL-17A) sustains a chronic inflammatory microenvironment that favors tumor formation. Here we report a novel IL-17–mediated cascade via the IL-17R–Act1–TRAF4–MEKK3–ERK5 positive circuit that directly stimulates keratinocyte proliferation and tumor formation. Although this axis dictates the expression of target genes Steap4 (a metalloreductase for cell metabolism and proliferation) and p63 (a transcription factor for epidermal stem cell proliferation), Steap4 is required for the IL-17–induced sustained expansion of p63+ basal cells in the epidermis. P63 (a positive transcription factor for the Traf4 promoter) induces TRAF4 expression in keratinocytes. Thus, IL-17–induced Steap4-p63 expression forms a positive feedback loop through p63-mediated TRAF4 expression, driving IL-17–dependent sustained activation of the TRAF4–ERK5 axis for keratinocyte proliferation and tumor formation.
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Affiliation(s)
- Ling Wu
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Pathology and Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Xing Chen
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Junjie Zhao
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Pathology and Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Bradley Martin
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Pathology and Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Jarod A Zepp
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Pathology and Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Jennifer S Ko
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Chunfang Gu
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Gang Cai
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Institute of Immunology, and Department of Immunobiology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Wenjun Ouyang
- Department of Immunology, Genentech, South San Francisco, CA 94080
| | - Ganes Sen
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - George R Stark
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Bing Su
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Institute of Immunology, and Department of Immunobiology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China Department of Laboratory Medicine, Ruijin Hospital, Shanghai Institute of Immunology, and Department of Immunobiology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China Department of Immunobiology and Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520 Department of Immunobiology and Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520
| | | | - Cathy Tournier
- University of Manchester, Manchester M13 9PL, England, UK
| | - Thomas A Hamilton
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Allison Vidimos
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Brian Gastman
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195 Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Caini Liu
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
| | - Xiaoxia Li
- Department of Immunology, Department of Anatomical Pathology and Clinical Pathology, Department of Cancer Biology, Department of Dermatology, and Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH 44195
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32
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Song X, Dai D, He X, Zhu S, Yao Y, Gao H, Wang J, Qu F, Qiu J, Wang H, Li X, Shen N, Qian Y. Growth Factor FGF2 Cooperates with Interleukin-17 to Repair Intestinal Epithelial Damage. Immunity 2015; 43:488-501. [PMID: 26320657 DOI: 10.1016/j.immuni.2015.06.024] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 04/27/2015] [Accepted: 06/09/2015] [Indexed: 12/21/2022]
Abstract
The intestinal epithelial barrier plays a critical role in the mucosal immunity. However, it remains largely unknown how the epithelial barrier is maintained after damage. Here we show that growth factor FGF2 synergized with interleukin-17 (IL-17) to induce genes for repairing of damaged epithelium. FGF2 or IL-17 deficiency resulted in impaired epithelial proliferation, increased pro-inflammatory microbiota outgrowth, and consequently worse pathology in a DSS-induced colitis model. The dysregulated microbiota in the model induced transforming growth factor beta 1 (TGFβ1) expression, which in turn induced FGF2 expression mainly in regulatory T cells. Act1, an essential adaptor in IL-17 signaling, suppressed FGF2-induced ERK activation through binding to adaptor molecule GRB2 to interfere with its association with guanine nucleotide exchange factor SOS1. Act1 preferentially bound to IL-17 receptor complex, releasing its suppressive effect on FGF2 signaling. Thus, microbiota-driven FGF2 and IL-17 cooperate to repair the damaged intestinal epithelium through Act1-mediated direct signaling cross-talk.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/immunology
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Blotting, Western
- Cell Line, Tumor
- Cells, Cultured
- Colitis/genetics
- Colitis/immunology
- Colitis/metabolism
- Fibroblast Growth Factor 2/genetics
- Fibroblast Growth Factor 2/immunology
- Fibroblast Growth Factor 2/metabolism
- Gene Expression Profiling/methods
- HEK293 Cells
- HT29 Cells
- HeLa Cells
- Humans
- Interleukin-17/genetics
- Interleukin-17/immunology
- Interleukin-17/metabolism
- Intestinal Mucosa/immunology
- Intestinal Mucosa/microbiology
- Intestinal Mucosa/pathology
- Intestines/immunology
- Intestines/microbiology
- Intestines/pathology
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Microbiota/genetics
- Microbiota/immunology
- Oligonucleotide Array Sequence Analysis
- Reverse Transcriptase Polymerase Chain Reaction
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Transforming Growth Factor beta/genetics
- Transforming Growth Factor beta/immunology
- Transforming Growth Factor beta/metabolism
- Wound Healing/immunology
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Affiliation(s)
- Xinyang Song
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Dai Dai
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Xiao He
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200001, China
| | - Shu Zhu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Yikun Yao
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Hanchao Gao
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Jingjing Wang
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Fangfang Qu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Ju Qiu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China
| | - Honglin Wang
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xiaoxia Li
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Nan Shen
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China; Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200001, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200032, China; Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
| | - Youcun Qian
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China; Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200001, China.
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33
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Roussel P, Cunha P, Porcherie A, Petzl W, Gilbert FB, Riollet C, Zerbe H, Rainard P, Germon P. Investigating the contribution of IL-17A and IL-17F to the host response during Escherichia coli mastitis. Vet Res 2015; 46:56. [PMID: 26062913 PMCID: PMC4462179 DOI: 10.1186/s13567-015-0201-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 05/05/2015] [Indexed: 12/17/2022] Open
Abstract
Mastitis remains a major disease of cattle with a strong impact on the dairy industry. There is a growing interest in understanding how cell mediated immunity contributes to the defence of the mammary gland against invading mastitis causing bacteria. Cytokines belonging to the IL-17 family, and the cells that produce them, have been described as important modulators of the innate immunity, in particular that of epithelial cells. We report here that expression of IL-17A and IL-17F genes, encoding two members of the IL-17 family, are induced in udder tissues of cows experimentally infected with Escherichia coli. The impact of IL-17A on the innate response of bovine mammary epithelial cells was investigated using a newly isolated cell line, the PS cell line. We first showed that PS cells, similar to primary bovine mammary epithelial cells, were able to respond to agonists of TLR2 and to LPS, provided CD14 was added to the culture medium. We then showed that secretion of CXCL8 and transcription of innate immunity related-genes by PS cells were increased by IL-17A, in particular when these cells were stimulated with live E. coli bacteria. Together with data from the literature, these results support the hypothesis that IL-17A and IL-17 F could play an important role in mediating of host-pathogen interactions during mastitis.
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Affiliation(s)
- Perrine Roussel
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Patricia Cunha
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Adeline Porcherie
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Wolfram Petzl
- Clinic for Ruminants with Ambulatory and Herd Health Services at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians University Munich, Oberschleissheim, Germany.
| | - Florence B Gilbert
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Céline Riollet
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Holm Zerbe
- Clinic for Ruminants with Ambulatory and Herd Health Services at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians University Munich, Oberschleissheim, Germany.
| | - Pascal Rainard
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
| | - Pierre Germon
- INRA, UMR1282, Infectiologie et Santé Publique, F-37380, Nouzilly, France. .,Université François Rabelais de Tours, UMR1282, Infectiologie et Santé Publique, F-37000, Tours, France.
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Zepp JA, Wu L, Qian W, Ouyang W, Aronica M, Erzurum S, Li X. TRAF4-SMURF2-mediated DAZAP2 degradation is critical for IL-25 signaling and allergic airway inflammation. THE JOURNAL OF IMMUNOLOGY 2015; 194:2826-37. [PMID: 25681341 DOI: 10.4049/jimmunol.1402647] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
IL-25 promotes type 2 immunity by inducing the expression of Th2-associated cytokines. Although it is known that the IL-25R (IL-17RB) recruits the adaptor protein ACT1, the IL-25R signaling mechanism remains poorly understood. While screening for IL-25R components, we found that IL-25 responses were impaired in Traf4 (-/-) cells. Administering IL-25 to Traf4 (-/-) mice resulted in blunted airway eosinophilia and Th2 cytokine production. Notably, IL-25R recruitment of TRAF4 was required for the ACT1/IL-25R interaction. Mechanistically, TRAF4 recruited the E3-ligase SMURF2, to degrade the IL-25R-inhibitory molecule DAZAP2. Silencing Dazap2 increased ACT1/IL-25R interaction and IL-25 responsiveness. Moreover, a tyrosine within the IL-25R elicited DAZAP2 interference. This study indicates that TRAF4-SMURF2-mediated DAZAP2 degradation is a crucial initiating event for the IL-25 response.
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Affiliation(s)
- Jarod A Zepp
- Department of Immunology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195; Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195
| | - Ling Wu
- Department of Immunology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195; Department of Pathology, Case Western Reserve University, Cleveland, OH 44106
| | - Wen Qian
- Department of Immunology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Wenjun Ouyang
- Department of Immunology, Genentech, South San Francisco, CA 94080; and
| | - Mark Aronica
- Department of Pathobiology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Serpil Erzurum
- Department of Pathobiology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Xiaoxia Li
- Department of Immunology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195; Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195;
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Th17 differentiation and their pro-inflammation function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 841:99-151. [PMID: 25261206 DOI: 10.1007/978-94-017-9487-9_5] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CD4(+) T helper cells are classical but constantly reinterpreted T-cell subset, playing critical roles in a diverse range of inflammatory responses or diseases. Depending on the cytokines they release and the immune responses they mediate, CD4(+) T cells are classically divided into two major cell populations: Th1 and Th2 cells. However, recent studies challenged this Th1/Th2 paradigm by discovering several T-helper cell subsets with specific differentiation program and functions, including Th17 cells, Treg cells, and Tfh cells. In this chapter, we summarize the current understanding and recent progresses on the Th17 lineage differentiation and its effector impacts on variety of inflammatory responses or disease pathogenesis.
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Abstract
: Interleukin-17 receptor A (IL-17RA) is responsible for both IL-17A and IL-25 (IL-17E) signaling pathways. Current evidences suggest distinct but interactive responses between IL-17A and IL-25 signaling, both of which are critical for intestinal immune homeostasis. IL-17RA is assumed to regulate this counterbalance and therefore becomes a crucial molecule in mucosal immunology. In this review, we will describe the structure of IL-17RA, compare IL-17A and IL-25 signaling pathways, and emphasize on the function of IL-17RA in intestinal inflammation and discuss current evidences of accomplished and ongoing clinical trials with monoclonal antibodies targeting Th17 pathway, especially IL-17RA.
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Gaffen SL, Jain R, Garg AV, Cua DJ. The IL-23-IL-17 immune axis: from mechanisms to therapeutic testing. Nat Rev Immunol 2014; 14:585-600. [PMID: 25145755 DOI: 10.1038/nri3707] [Citation(s) in RCA: 1120] [Impact Index Per Article: 112.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Following the discovery of T helper 17 (TH17) cells, the past decade has witnessed a major revision of the TH subset paradigm and substantial progress has been made in deciphering the molecular mechanisms of T cell lineage commitment and function. In this Review, we focus on the recent advances that have been made regarding the transcriptional control of TH17 cell plasticity and stability, as well as the effector functions of TH17 cells, and we highlight the mechanisms of IL-17 signalling in mesenchymal and barrier epithelial tissues. We also discuss the emerging clinical data showing that IL-17-specific and IL-23-specific antibody treatments are remarkably effective for treating many immune-mediated inflammatory diseases.
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Affiliation(s)
- Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, S702 BST, 3500 Terrace Street, Pittsburgh, Pennsylvania 15261, USA
| | - Renu Jain
- Merck Research Laboratories, Palo Alto, 901 California Avenue, Palo Alto, California 94304, USA
| | - Abhishek V Garg
- Division of Rheumatology and Clinical Immunology, S702 BST, 3500 Terrace Street, Pittsburgh, Pennsylvania 15261, USA
| | - Daniel J Cua
- Merck Research Laboratories, Palo Alto, 901 California Avenue, Palo Alto, California 94304, USA
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Wu L, Wang C, Boisson B, Misra S, Rayman P, Finke JH, Puel A, Casanova JL, Li X. The differential regulation of human ACT1 isoforms by Hsp90 in IL-17 signaling. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2014; 193:1590-9. [PMID: 25024377 PMCID: PMC4119565 DOI: 10.4049/jimmunol.1400715] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
IL-17 is a proinflammatory cytokine implicated in the pathogenesis of autoimmune diseases including psoriasis. ACT1 is an essential adaptor molecule in the IL-17 signaling pathway. A missense single nucleotide polymorphism (rs33980500; SNP-D10N) that resulted in the substitution of an asparagine for an aspartic acid at position 10 of ACT1 (ACT1-D10N) is associated with psoriasis susceptibility. Due to alternative splicing in humans, SNP-D10N encodes two mutated ACT1 proteins, ACT1-D10N and ACT1-D19N. Although both ACT1 isoforms are Hsp90 client proteins, the nine additional amino acids in ACT1-D19N provide an additional Hsp90 binding site that is absent in ACT1-D10N. Therefore, whereas ACT1-D10N is a dead protein that is unable to transduce IL-17 signals for gene expression, ACT1-D19N is fully responsive to IL-17. Intriguingly, the two ACT1 isoforms are differentially expressed in ACT1(D10N/D10N) fibroblasts and T cells. Fibroblasts express both isoforms equally, enabling ACT1-D19N to compensate for the loss of ACT1-D10N function. ACT1(D10N/D10N) T cells, however, express predominantly ACT1-D10N. Lacking this compensatory mechanism, ACT1(D10N/D10N) T cells behave like ACT1-deficient T cells, exhibiting a dysregulated and hyperactive Th17 phenotype with overproduction of IL-22 and IL-17. The hyperactive Th17 response combined with fully responsive fibroblasts likely synergized to contribute to psoriasis susceptibility in SNP-D10N patients.
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Affiliation(s)
- Ling Wu
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106; Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Chenhui Wang
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Bertrand Boisson
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065
| | - Saurav Misra
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Patricia Rayman
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - James H Finke
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Anne Puel
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065; INSERM Unité Mixte de Recherche 1163, Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Paris 75015, France; Paris Descartes-Sorbonne Paris Cité University, Imagine Institute, Paris 75015, France; and
| | - Jean-Laurent Casanova
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065; INSERM Unité Mixte de Recherche 1163, Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Paris 75015, France; Paris Descartes-Sorbonne Paris Cité University, Imagine Institute, Paris 75015, France; and Pediatric Hematology-Immunology Unit, Necker Hospital, Paris 75015, France
| | - Xiaoxia Li
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195;
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Chowdhury S, Dijkhuis A, Steiert S, Lutter R. IL-17 attenuates degradation of ARE-mRNAs by changing the cooperation between AU-binding proteins and microRNA16. PLoS Genet 2013; 9:e1003747. [PMID: 24086143 PMCID: PMC3784493 DOI: 10.1371/journal.pgen.1003747] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 07/10/2013] [Indexed: 01/25/2023] Open
Abstract
Interleukin 17A (IL-17), a mediator implicated in chronic and severe inflammatory diseases, enhances the production of pro-inflammatory mediators by attenuating decay of the encoding mRNAs. The decay of many of these mRNAs depends on proteins (AUBps) that target AU-rich elements in the 3′-untranslated region of mRNAs and facilitate either mRNA decay or stabilization. Here we show that AUBps and the target mRNA assemble in a novel ribonucleoprotein complex in the presence of microRNA16 (miR16), which leads to the degradation of the target mRNA. Notably, IL-17 attenuates miR16 expression and promotes the binding of stabilizing AUBps over that of destabilizing AUBps, reducing mRNA decay. These findings indicate that miR16 independently of a seed sequence, directs the competition between degrading and stabilizing AUBps for target mRNAs. Since AUBps affect expression of about 8% of the human transcriptome and miR16 is ubiquitously expressed, IL-17 may in addition to inflammation affect many other cellular processes. Inflammation is driven by inflammatory mediators. Interleukin 17A (IL-17) is implicated in chronic and severe inflammation and exaggerates production of inflammatory mediators. This is due, at least in part, to the IL-17-attenuated degradation of mRNAs encoding these inflammatory mediators, but the underlying mechanism has remained elusive. Most of these mRNAs contain AU-rich elements in their 3′-untranslated region and are targeted by AU-binding proteins (AUBps) that promote either mRNA degradation or stabilization. Here we show that IL-17 directs the AU-mediated mRNA degradation (AMD pathway) by modulating the interaction of degrading and stabilizing AUBps via microRNA16 (miR16). Whereas microRNAs target mRNAs to the RISC pathway for degradation by binding to a seed sequence, miR16 drives degradation by the AMD pathway without an apparent seed sequence. Transcriptome analyses have revealed that the expression of 8% of all eukaryotic transcripts is dependent on the AMD pathway. Therefore, the impact of IL-17 on inflammatory diseases may extend beyond the production of inflammatory mediators to processes like tissue repair, cell cycle, etc. In addition, targeting AUBp and/or miR16 may provide a novel therapeutic option to combat the IL-17 axis of inflammation.
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Affiliation(s)
- Saheli Chowdhury
- Department of Respiratory Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
| | - Annemiek Dijkhuis
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Sabrina Steiert
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - René Lutter
- Department of Respiratory Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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40
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Verdier J, Ruemmele FM. Molecular mechanisms and cell targets of Th17 cells in the gastrointestinal tract: an innate sense of adaptivity. Int Rev Immunol 2013; 32:475-92. [PMID: 24069950 DOI: 10.3109/08830185.2013.829471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
T-helper (TH) 17 activation is crucial for protective immune responses against bacteria and fungi at mucosal surfaces, but it can also be implicated in the pathogenesis of several autoimmune and chronic inflammatory diseases, such as inflammatory bowel diseases (IBD). Although rapid progress was made elucidating induction and functional heterogeneity of Th17 responses, the underlying molecular effects of Th17 response including the most relevant different cell targets of Th17 cytokines remain poorly understood. Cytokines produced by Th17 cells have broad effects on both hematopoietic and nonhematopoietic cells and can act in synergy with various inflammatory factors. In this review, we will focus on the effects of Th17-derived cytokines in the gastrointestinal tract and discuss how Th17 responses can affect both innate and adaptive immunity and may contribute to the pathogenesis of inflammatory GI processes.
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Affiliation(s)
- Julien Verdier
- Institut National de la Santé et de la Recherche Médicale (INSERM) , UMR989, Paris , France
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41
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Abstract
The interleukin 17 (IL-17) family, a subset of cytokines consisting of IL-17A-F, plays crucial roles in host defense against microbial organisms and in the development of inflammatory diseases. Although IL-17A is the signature cytokine produced by T helper 17 (Th17) cells, IL-17A and other IL-17 family cytokines have multiple sources ranging from immune cells to non-immune cells. The IL-17 family signals via their correspondent receptors and activates downstream pathways that include NFκB, MAPKs and C/EBPs to induce the expression of anti-microbial peptides, cytokines and chemokines. The proximal adaptor Act1 is a common mediator during the signaling of all IL-17 cytokines so far and is thus involved in IL-17 mediated host defense and IL-17-driven autoimmune conditions. This review will give an overview and recent updates on the IL-17 family, the activation and regulation of IL-17 signaling as well as diseases associated with this cytokine family.
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Affiliation(s)
- Chunfang Gu
- Department of Immunology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
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Song X, Qian Y. IL-17 family cytokines mediated signaling in the pathogenesis of inflammatory diseases. Cell Signal 2013; 25:2335-47. [PMID: 23917206 DOI: 10.1016/j.cellsig.2013.07.021] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 07/26/2013] [Indexed: 12/26/2022]
Abstract
Inflammation is the immediate protective response of the body to pathogen invasions, allergen challenges, chemical exposures or physical injuries. Acute inflammation usually accompanies with transient infiltration of leukocytes, removal of danger signals and eventually tissue repair, while persistent and uncontrolled inflammation becomes a major stimulator in the progression of many chronic diseases in human, including autoimmune diseases, metabolic disorders and cancer. Interleukin (IL)-17 family is a recent classified subset of cytokines, playing critical roles in both acute and chronic inflammatory responses. In this review, we will summarize recent progresses on the signalings of this family cytokines and their impacts on the inflammatory responses or disorders.
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Affiliation(s)
- Xinyang Song
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Ho AW, Garg AV, Monin L, Simpson-Abelson MR, Kinner L, Gaffen SL. The anaphase-promoting complex protein 5 (AnapC5) associates with A20 and inhibits IL-17-mediated signal transduction. PLoS One 2013; 8:e70168. [PMID: 23922952 PMCID: PMC3726431 DOI: 10.1371/journal.pone.0070168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 06/15/2013] [Indexed: 12/14/2022] Open
Abstract
IL-17 is the founding member of a family of cytokines and receptors with unique structures and signaling properties. IL-17 is the signature cytokine of Th17 cells, a relatively new T cell population that promotes inflammation in settings of infection and autoimmunity. Despite advances in understanding Th17 cells, mechanisms of IL-17-mediated signal transduction are less well defined. IL-17 signaling requires contributions from two receptor subunits, IL-17RA and IL-17RC. Mutants of IL-17RC lacking the cytoplasmic domain are nonfunctional, indicating that IL-17RC provides essential but poorly understood signaling contributions to IL-17-mediated signaling. To better understand the role of IL-17RC in signaling, we performed a yeast 2-hybrid screen to identify novel proteins associated with the IL-17RC cytoplasmic tail. One of the most frequent candidates was the anaphase promoting complex protein 7 (APC7 or AnapC7), which interacted with both IL-17RC and IL-17RA. Knockdown of AnapC7 by siRNA silencing exerted no detectable impact on IL-17 signaling. However, AnapC5, which associates with AnapC7, was also able to bind IL-17RA and IL-17RC. Moreover, AnapC5 silencing enhanced IL-17-induced gene expression, suggesting an inhibitory activity. Strikingly, AnapC5 also associated with A20 (TNFAIP3), a recently-identified negative feedback regulator of IL-17 signal transduction. IL-17 signaling was not impacted by knockdown of Itch or TAXBP1, scaffolding proteins that mediate A20 inhibition in the TNFα and IL-1 signaling pathways. These data suggest a model in which AnapC5, rather than TAX1BP1 and Itch, is a novel adaptor and negative regulator of IL-17 signaling pathways.
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Affiliation(s)
- Allen W. Ho
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, State University of New York, Buffalo, New York, United States of America
| | - Abhishek V. Garg
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Leticia Monin
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Michelle R. Simpson-Abelson
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Lauren Kinner
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Sarah L. Gaffen
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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IL-17A and Th17 cells in lung inflammation: an update on the role of Th17 cell differentiation and IL-17R signaling in host defense against infection. Clin Dev Immunol 2013; 2013:267971. [PMID: 23956759 PMCID: PMC3730142 DOI: 10.1155/2013/267971] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 06/27/2013] [Indexed: 02/06/2023]
Abstract
The significance of Th17 cells and interleukin- (IL-)17A signaling in host defense and disease development has been demonstrated in various infection and autoimmune models. Numerous studies have indicated that Th17 cells and its signature cytokine IL-17A are critical to the airway's immune response against various bacteria and fungal infection. Cytokines such as IL-23, which are involved in Th17 differentiation, play a critical role in controlling Klebsiella pneumonia (K. pneumonia) infection. IL-17A acts on nonimmune cells in infected tissues to strengthen innate immunity by inducing the expression of antimicrobial proteins, cytokines, and chemokines. Mice deficient in IL-17 receptor (IL-17R) expression are susceptible to infection by various pathogens. In this review, we summarize the recent advances in unraveling the mechanism behind Th17 cell differentiation, IL-17A/IL-17R signaling, and also the importance of IL-17A in pulmonary infection.
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Dhamija S, Winzen R, Doerrie A, Behrens G, Kuehne N, Schauerte C, Neumann E, Dittrich-Breiholz O, Kracht M, Holtmann H. Interleukin-17 (IL-17) and IL-1 activate translation of overlapping sets of mRNAs, including that of the negative regulator of inflammation, MCPIP1. J Biol Chem 2013; 288:19250-9. [PMID: 23658019 DOI: 10.1074/jbc.m113.452649] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Changes in gene expression during inflammation are in part caused by post-transcriptional mechanisms. A transcriptome-wide screen for changes in ribosome occupancy indicated that the inflammatory cytokine IL-17 activates translation of a group of mRNAs that overlaps partially with those affected similarly by IL-1. Included are mRNAs of IκBζ and of MCPIP1, important regulators of the quality and course of immune and inflammatory responses. Evidence for increased ribosome association of these mRNAs was also obtained in LPS-activated RAW264.7 macrophages and human peripheral blood mononuclear cells. Like IL-1, IL-17 activated translation of IκBζ mRNA by counteracting the function of a translational silencing element in its 3'-UTR defined previously. Translational silencing of MCPIP1 mRNA in unstimulated cells resulted from the combined suppressive activities of its 5'-UTR, which contains upstream open reading frames, and of its 3'-UTR, which silences independently of the 5'-UTR. Only the silencing function of the 3'-UTR was counteracted by IL-17 as well as by IL-1. Translational silencing by the 3'-UTR was dependent on a putative stem-loop-forming region previously associated with rapid degradation of the mRNA. The results suggest that translational control exerted by IL-1 and IL-17 plays an important role in the coordination of an inflammatory reaction.
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Affiliation(s)
- Sonam Dhamija
- Institute of Biochemistry, Hannover Medical School, D-30623 Hannover, Germany
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Song X, Qian Y. The activation and regulation of IL-17 receptor mediated signaling. Cytokine 2013; 62:175-82. [PMID: 23557798 DOI: 10.1016/j.cyto.2013.03.014] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/27/2013] [Accepted: 03/08/2013] [Indexed: 12/19/2022]
Abstract
Interleukin-17 (IL-17), the signature cytokine produced by T helper 17 (Th17) cells, plays pivotal roles in host defense responses against microbial invasion, as well as in the pathogenesis of autoimmune diseases and allergic syndromes. IL-17 activates several downstream signaling pathways including NF-κB, MAPKs and C/EBPs to induce gene expression of antibacterial peptides, proinflammatory chemokines and cytokines and matrix metalloproteinases (MMPs). IL-17 can also stabilize mRNAs of genes induced by TNFα. Although the physiological and pathological functions of IL-17 have been studied for many years, the landscape of its signaling transduction has not been described until recently. The cytosolic adaptor molecule Act1 (also known as CIKS) is considered as the master mediator of IL-17 signaling. In this review, we will summarize recent progress on activation and regulation of IL-17 mediated signal transduction, especially on Act1 mediated regulation of the signaling.
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Affiliation(s)
- Xinyang Song
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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47
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Ryzhakov G, Blazek K, Lai CCK, Udalova IA. IL-17 receptor adaptor protein Act1/CIKS plays an evolutionarily conserved role in antiviral signaling. THE JOURNAL OF IMMUNOLOGY 2012; 189:4852-8. [PMID: 23066157 DOI: 10.4049/jimmunol.1200428] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Double-stranded RNA-induced antiviral gene expression in mammalian cells requires activation of IFN regulatory factor 3 (IRF3). In this study, we show that the IL-17R adaptor protein Act1/CIKS is involved in this process. Small interfering RNA-mediated knockdown of Act1 in primary human skin fibroblasts specifically attenuates expression of IFN-β and IFN-stimulated antiviral genes induced by a synthetic viral mimic, polyinosinic-polycytidylic acid. Ectopic expression of Act1 potentiates the IRF3-driven expression of a synthetic reporter construct as well as the induction of antiviral genes. We demonstrate that this effect is dependent on the ability of Act1 to functionally and physically interact with IκB kinase ε (IKKε), a known IRF3 kinase, and IRF3: 1) Act1 binds IKKε and IRF3; 2) Act1-induced IRF3 activation can be blocked specifically by coexpression of a catalytically inactive mutant of IKKε; and 3) mutants of IRF3, either lacking the C terminus or mutated at the key phosphorylation sites, important for its activation by IKKε, do not support Act1-dependent IRF3 activation. We also show that a zebrafish Act1 protein is able to trigger antiviral gene expression in human cells, which suggests an evolutionarily conserved function of vertebrate Act1 in the host defense against viruses. On the whole, our study demonstrates that Act1 is a component of antiviral signaling.
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Affiliation(s)
- Grigory Ryzhakov
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Kennedy Institute of Rheumatology, University of Oxford, London W6 8LH, United Kingdom.
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TRAF6-dependent Act1 phosphorylation by the IκB kinase-related kinases suppresses interleukin-17-induced NF-κB activation. Mol Cell Biol 2012; 32:3925-37. [PMID: 22851696 DOI: 10.1128/mcb.00268-12] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Interleukin-17 (IL-17) is critically involved in the pathogenesis of various inflammatory disorders. IL-17 receptor (IL-17R)-proximal signaling complex (IL-17R-Act1-TRAF6) is essential for IL-17-mediated NF-κB activation, while IL-17-mediated mRNA stability is TRAF6 independent. Recently, inducible IκB kinase (IKKi) has been shown to phosphorylate Act1 on Ser 311 to mediate IL-17-induced mRNA stability. Here we show that TANK binding kinase 1 (TBK1), the other IKK-related kinase, directly phosphorylated Act1 on three other Ser sites to suppress IL-17R-mediated NF-κB activation. IL-17 stimulation activated TBK1 and induced its association with Act1. IKKi also phosphorylated Act1 on the three serine sites and played a redundant role with TBK1 in suppressing IL-17-induced NF-κB activation. Act1 phosphorylation on the three sites inhibited its association with TRAF6 and consequently NF-κB activation in IL-17R signaling. Interestingly, TRAF6, but not TRAF3, which is the upstream adaptor of the IKK-related kinases in antiviral signaling, was critical for IL-17-induced Act1 phosphorylation. TRAF6 was essential for IL-17-induced TBK1 activation, its association with Act1, and consequent Act1 phosphorylation. Our findings define a new role for the IKK-related kinases in suppressing IL-17-mediated NF-κB activation through TRAF6-dependent Act1 phosphorylation.
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Zepp JA, Liu C, Qian W, Wu L, Gulen MF, Kang Z, Li X. Cutting edge: TNF receptor-associated factor 4 restricts IL-17-mediated pathology and signaling processes. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2012; 189:33-7. [PMID: 22649194 PMCID: PMC3590847 DOI: 10.4049/jimmunol.1200470] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The effector T cell subset, Th17, plays a significant role in the pathogenesis of multiple sclerosis and of other autoimmune diseases. The signature cytokine, IL-17, engages the IL-17R and recruits the E3-ligase NF-κB activator 1 (Act1) upon stimulation. In this study, we examined the role of TNFR-associated factor (TRAF)4 in IL-17 signaling and Th17-mediated autoimmune encephalomyelitis. Primary cells from TRAF4-deficient mice displayed markedly enhanced IL-17-activated signaling pathways and induction of chemokine mRNA. Adoptive transfer of MOG35-55 specific wild-type Th17 cells into TRAF4-deficient recipient mice induced an earlier onset of disease. Mechanistically, we found that TRAF4 and TRAF6 used the same TRAF binding sites on Act1, allowing the competition of TRAF4 with TRAF6 for the interaction with Act1. Taken together, the results of this study reveal the necessity of a unique role of TRAF4 in restricting the effects of IL-17 signaling and Th17-mediated disease.
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Affiliation(s)
- Jarod A. Zepp
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Caini Liu
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
| | - Wen Qian
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
| | - Ling Wu
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University
| | | | - Zizhen Kang
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
| | - Xiaoxia Li
- Department of Immunology, Cleveland Clinic, Cleveland, OH, USA
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
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Zhu S, Pan W, Song X, Liu Y, Shao X, Tang Y, Liang D, He D, Wang H, Liu W, Shi Y, Harley JB, Shen N, Qian Y. The microRNA miR-23b suppresses IL-17-associated autoimmune inflammation by targeting TAB2, TAB3 and IKK-α. Nat Med 2012; 18:1077-86. [DOI: 10.1038/nm.2815] [Citation(s) in RCA: 332] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 04/25/2012] [Indexed: 12/11/2022]
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