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Interleukin-33 in the pathogenesis of liver fibrosis: alarming ILC2 and hepatic stellate cells. Cell Mol Immunol 2016; 14:143-145. [PMID: 28017959 DOI: 10.1038/cmi.2016.62] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 10/23/2016] [Indexed: 02/06/2023] Open
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Pejnovic N, Jeftic I, Jovicic N, Arsenijevic N, Lukic ML. Galectin-3 and IL-33/ST2 axis roles and interplay in diet-induced steatohepatitis. World J Gastroenterol 2016; 22:9706-9717. [PMID: 27956794 PMCID: PMC5124975 DOI: 10.3748/wjg.v22.i44.9706] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/02/2016] [Accepted: 09/14/2016] [Indexed: 02/06/2023] Open
Abstract
Immune reactivity and chronic low-grade inflammation (metaflammation) play an important role in the pathogenesis of obesity-associated metabolic disorders, including type 2 diabetes and nonalcoholic fatty liver disease (NAFLD), a spectrum of diseases that include liver steatosis, nonalcoholic steatohepatitis (NASH), fibrosis, and cirrhosis. Increased adiposity and insulin resistance contribute to the progression from hepatic steatosis to NASH and fibrosis through the development of proinflammatory and profibrotic processes in the liver, including increased hepatic infiltration of innate and adaptive immune cells, altered balance of cytokines and chemokines, increased reactive oxygen species generation and hepatocellular death. Experimental models of dietary-induced NAFLD/NASH in mice on different genetic backgrounds or knockout mice with different immune reactivity are used for elucidating the pathogenesis of NASH and liver fibrosis. Galectin-3 (Gal-3), a unique chimera-type β-galactoside-binding protein of the galectin family has a regulatory role in immunometabolism and fibrogenesis. Mice deficient in Gal-3 develop pronounced adiposity, hyperglycemia and hepatic steatosis, as well as attenuated liver inflammation and fibrosis when fed an obesogenic high-fat diet. Interleukin (IL)-33, a member of the IL-1 cytokine family, mediates its effects through the ST receptor, which is present on immune and nonimmune cells and participates in immunometabolic and fibrotic disorders. Recent evidence, including our own data, suggests a protective role for the IL-33/IL-33R (ST2) signaling pathway in obesity, adipose tissue inflammation and atherosclerosis, but a profibrotic role in NASH development. The link between Gal-3 and soluble ST2 in myocardial fibrosis and heart failure progression has been demonstrated and we have recently shown that Gal-3 and the IL-33/ST2 pathway interact and both have a profibrotic role in diet-induced NASH. This review discusses the current evidence on the roles of Gal-3 and the IL-33/ST2 pathway and their interplay in obesity-associated hepatic inflammation and fibrogenesis that may be of interest in the development of therapeutic interventions to prevent and/or reverse obesity-associated hepatic inflammation and fibrosis.
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Neumann K, Karimi K, Meiners J, Voetlause R, Steinmann S, Dammermann W, Lüth S, Asghari F, Wegscheid C, Horst AK, Tiegs G. A Proinflammatory Role of Type 2 Innate Lymphoid Cells in Murine Immune-Mediated Hepatitis. THE JOURNAL OF IMMUNOLOGY 2016; 198:128-137. [PMID: 27872212 DOI: 10.4049/jimmunol.1600418] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 10/20/2016] [Indexed: 12/24/2022]
Abstract
Type 2 innate lymphoid cells (ILC2) mediate inflammatory immune responses in the context of diseases triggered by the alarmin IL-33. In recent years, IL-33 has been implicated in the pathogenesis of immune-mediated liver diseases. However, the immunoregulatory function of ILC2s in the inflamed liver remains elusive. Using the murine model of Con A-induced immune-mediated hepatitis, we showed that selective expansion of ILC2s in the liver was associated with highly elevated hepatic IL-33 expression, severe liver inflammation, and infiltration of eosinophils. CD4+ T cell-mediated tissue damage and subsequent IL-33 release were responsible for the activation of hepatic ILC2s that produced the type 2 cytokines IL-5 and IL-13 during liver inflammation. Interestingly, ILC2 depletion correlated with less severe hepatitis and reduced accumulation of eosinophils in the liver, whereas adoptive transfer of hepatic ILC2s aggravated liver inflammation and tissue damage. We further showed that, despite expansion of hepatic ILC2s, 3-d IL-33 treatment before Con A challenge potently suppressed development of immune-mediated hepatitis. We found that IL-33 not only activated hepatic ILC2s but also expanded CD4+ Foxp3+ regulatory T cells (Treg) expressing the IL-33 receptor ST2 in the liver. This Treg subset also accumulated in the liver during resolution of immune-mediated hepatitis. In summary, hepatic ILC2s are poised to respond to the release of IL-33 upon liver tissue damage through expression of type 2 cytokines thereby participating in the pathogenesis of immune-mediated hepatitis. Inflammatory activity of ILC2s might be regulated by IL-33-elicited ST2+ Tregs that also arise in immune-mediated hepatitis.
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Affiliation(s)
- Katrin Neumann
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Khalil Karimi
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Jana Meiners
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Ruth Voetlause
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Silja Steinmann
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Werner Dammermann
- 1. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany
| | - Stefan Lüth
- 1. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany
| | - Farahnaz Asghari
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Claudia Wegscheid
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Andrea K Horst
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
| | - Gisa Tiegs
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, D-20246, Germany; and
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Flores-Borja F, Irshad S, Gordon P, Wong F, Sheriff I, Tutt A, Ng T. Crosstalk between Innate Lymphoid Cells and Other Immune Cells in the Tumor Microenvironment. J Immunol Res 2016; 2016:7803091. [PMID: 27882334 PMCID: PMC5110869 DOI: 10.1155/2016/7803091] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/20/2016] [Accepted: 08/30/2016] [Indexed: 12/26/2022] Open
Abstract
Our knowledge and understanding of the tumor microenvironment (TME) have been recently expanded with the recognition of the important role of innate lymphoid cells (ILC). Three different groups of ILC have been described based on their ability to produce cytokines that mediate the interactions between innate and adaptive immune cells in a variety of immune responses in infection, allergy, and autoimmunity. However, recent evidence from experimental models and clinical studies has demonstrated that ILC contribute to the mechanisms that generate suppressive or tolerant environments that allow tumor regression or progression. Defining the complex network of interactions and crosstalk of ILC with other immune cells and understanding the specific contributions of each type of ILC leading to tumor development will allow the manipulation of their function and will be important to develop new interventions and therapeutic strategies.
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Affiliation(s)
- Fabian Flores-Borja
- Breast Cancer Now Research Unit, Division of Cancer Studies, Guy's Hospital, King's College London School of Medicine, London SE1 9RT, UK
| | - Sheeba Irshad
- Breast Cancer Now Research Unit, Division of Cancer Studies, Guy's Hospital, King's College London School of Medicine, London SE1 9RT, UK
| | - Peter Gordon
- Breast Cancer Now Research Unit, Division of Cancer Studies, Guy's Hospital, King's College London School of Medicine, London SE1 9RT, UK
| | - Felix Wong
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, King's College London, Guy's Medical School Campus, London SE1 1ULK, UK
| | - Ibrahim Sheriff
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, King's College London, Guy's Medical School Campus, London SE1 1ULK, UK
| | - Andrew Tutt
- Breast Cancer Now Research Unit, Division of Cancer Studies, Guy's Hospital, King's College London School of Medicine, London SE1 9RT, UK
- Breast Cancer Now Toby Robins Research Centre, Institute of Cancer Research, London SW3 6JB, UK
| | - Tony Ng
- Breast Cancer Now Research Unit, Division of Cancer Studies, Guy's Hospital, King's College London School of Medicine, London SE1 9RT, UK
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, King's College London, Guy's Medical School Campus, London SE1 1ULK, UK
- UCL Cancer Institute, Paul O'Gorman Building, University College London, London WC1E 6DD, UK
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105
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Mouse Hepatitis Virus Infection Induces a Toll-Like Receptor 2-Dependent Activation of Inflammatory Functions in Liver Sinusoidal Endothelial Cells during Acute Hepatitis. J Virol 2016; 90:9096-113. [PMID: 27489277 DOI: 10.1128/jvi.01069-16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 07/23/2016] [Indexed: 12/12/2022] Open
Abstract
UNLABELLED Under physiological conditions, the liver sinusoidal endothelial cells (LSECs) mediate hepatic immune tolerance toward self or foreign antigens through constitutive expression of anti-inflammatory mediators. However, upon viral infection or Toll-like receptor 2 (TLR2) activation, LSECs can achieve proinflammatory functions, but their role in hepatic inflammation during acute viral hepatitis is unknown. Using the highly virulent mouse hepatitis virus type 3 (MHV3) and the attenuated variants 51.6-MHV3 and YAC-MHV3, exhibiting lower tropism for LSECs, we investigated in vivo and in vitro the consequence of LSEC infection on their proinflammatory profiles and the aggravation of acute hepatitis process. In vivo infection with virulent MHV3, in comparison to attenuated strains, resulted in fulminant hepatitis associated with higher hepatic viral load, tissue necrosis, and levels of inflammatory mediators and earlier recruitment of inflammatory cells. Such hepatic inflammatory disorders correlated with disturbed production of interleukin-10 (IL-10) and vascular factors by LSECs. We next showed in vitro that infection of LSECs by the virulent MHV3 strain altered their production of anti-inflammatory cytokines and promoted higher release of proinflammatory and procoagulant factors and earlier cell damage than infection by attenuated strains. This higher replication and proinflammatory activation in LSECs by the virulent MHV3 strain was associated with a specific activation of TLR2 signaling by the virus. We provide evidence that TLR2 activation of LSCEs by MHV3 is an aggravating factor of hepatic inflammation and correlates with the severity of hepatitis. Taken together, these results indicate that preservation of the immunotolerant properties of LSECs during acute viral hepatitis is imperative in order to limit hepatic inflammation and damage. IMPORTANCE Viral hepatitis B and C infections are serious health problems affecting over 350 million and 170 million people worldwide, respectively. It has been suggested that a balance between protection and liver damage mediated by the host's immune response during the acute phase of infection would be determinant in hepatitis outcome. Thus, it appears crucial to identify the factors that predispose in exacerbating liver inflammation to limit hepatocyte injury. Liver sinusoidal endothelial cells (LSECs) can express both anti- and proinflammatory functions, but their role in acute viral hepatitis has never been investigated. Using mouse hepatitis virus (MHV) infections as animal models of viral hepatitis, we report for the first time that in vitro and in vivo infection of LSECs by the pathogenic MHV3 serotype leads to a reversion of their intrinsic anti-inflammatory phenotype toward a proinflammatory profile as well to as disorders in vascular factors, correlating with the severity of hepatitis. These results highlight a new virus-promoted mechanism of exacerbation of liver inflammatory response during acute hepatitis.
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Abstract
Interleukin-33 (IL-33) - a member of the IL-1 family - was originally described as an inducer of type 2 immune responses, activating T helper 2 (TH2) cells and mast cells. Now, evidence is accumulating that IL-33 also potently stimulates group 2 innate lymphoid cells (ILC2s), regulatory T (Treg) cells, TH1 cells, CD8+ T cells and natural killer (NK) cells. This pleiotropic nature is reflected in the role of IL-33 in tissue and metabolic homeostasis, infection, inflammation, cancer and diseases of the central nervous system. In this Review, we highlight the molecular and cellular characteristics of IL-33, together with its major role in health and disease and the potential therapeutic implications of these findings in humans.
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107
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Zhang Y, Tang J, Tian Z, van Velkinburgh JC, Song J, Wu Y, Ni B. Innate Lymphoid Cells: A Promising New Regulator in Fibrotic Diseases. Int Rev Immunol 2016. [PMID: 26222510 DOI: 10.3109/08830185.2015.1068304] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fibrosis is a consequence of chronic inflammation and the persistent accumulation of extracellular matrix, for which the cycle of tissue injury and repair becomes a predominant feature. Both the innate and adaptive immune systems play key roles in the progress of fibrosis. The recently identified subsets of innate lymphoid cells (ILCs), which are mainly localize to epithelial surfaces, have been characterized as regulators of chronic inflammation and tissue remodeling, representing a functional bridge between the innate and adaptive immunity. Moreover, recent research has implicated ILCs as potential contributing factors to several kinds of fibrosis diseases, such as hepatic fibrosis and pulmonary fibrosis. Here, we will summarize and discuss the key roles of ILCs and their related factors in fibrotic diseases and their potential for translation to the clinic.
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Affiliation(s)
- Yi Zhang
- a Institute of Immunology, PLA, Third Military Medical University , Chongqing , PR China
| | - Jun Tang
- b Department of Dermatology , 105th Hospital of PLA , Hefei , PR China
| | - Zhiqiang Tian
- a Institute of Immunology, PLA, Third Military Medical University , Chongqing , PR China
| | | | - Jianxun Song
- d Department of Microbiology and Immunology , The Pennsylvania State University College of Medicine , Hershey , PA , USA
| | - Yuzhang Wu
- a Institute of Immunology, PLA, Third Military Medical University , Chongqing , PR China
| | - Bing Ni
- a Institute of Immunology, PLA, Third Military Medical University , Chongqing , PR China
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108
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Wounds that heal and wounds that don't - The role of the IL-33/ST2 pathway in tissue repair and tumorigenesis. Semin Cell Dev Biol 2016; 61:41-50. [PMID: 27521518 DOI: 10.1016/j.semcdb.2016.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 08/04/2016] [Accepted: 08/09/2016] [Indexed: 12/19/2022]
Abstract
IL-33 is a member of the IL-1 family of cytokines. IL-33 is predominantly located within the nucleus of cells where it plays a role in gene regulation. Given the right combination of signals and cellular damage, stored IL-33 is released from the cell where it can interact with its receptor ST2, triggering danger-associated responses and act as a cellular "alarmin". Whilst IL-33/ST2 signalling has been shown to induce potent pro-inflammatory responses that can be detrimental in certain disease states, a dichotomous, protective role of IL-33 in promoting wound healing has also emerged in multiple tissues types. This review will explore the current literature concerning this homeostatic role of IL-33/ST2 in tissue repair and also review its role in uncontrolled wound responses as seen in both fibrosis and tumorigenesis.
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109
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Noel G, Arshad MI, Filliol A, Genet V, Rauch M, Lucas-Clerc C, Lehuen A, Girard JP, Piquet-Pellorce C, Samson M. Ablation of interaction between IL-33 and ST2+ regulatory T cells increases immune cell-mediated hepatitis and activated NK cell liver infiltration. Am J Physiol Gastrointest Liver Physiol 2016; 311:G313-23. [PMID: 27340126 DOI: 10.1152/ajpgi.00097.2016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/30/2016] [Indexed: 01/31/2023]
Abstract
The IL-33/ST2 axis plays a protective role in T-cell-mediated hepatitis, but little is known about the functional impact of endogenous IL-33 on liver immunopathology. We used IL-33-deficient mice to investigate the functional effect of endogenous IL-33 in concanavalin A (Con A)-hepatitis. IL-33(-/-) mice displayed more severe Con A liver injury than wild-type (WT) mice, consistent with a hepatoprotective effect of IL-33. The more severe hepatic injury in IL-33(-/-) mice was associated with significantly higher levels of TNF-α and IL-1β and a larger number of NK cells infiltrating the liver. The expression of Th2 cytokines (IL-4, IL-10) and IL-17 was not significantly varied between WT and IL-33(-/-) mice following Con A-hepatitis. The percentage of CD25(+) NK cells was significantly higher in the livers of IL-33(-/-) mice than in WT mice in association with upregulated expression of CXCR3 in the liver. Regulatory T cells (Treg cells) strongly infiltrated the liver in both WT and IL-33(-/-) mice, but Con A treatment increased their membrane expression of ST2 and CD25 only in WT mice. In vitro, IL-33 had a significant survival effect, increasing the total number of splenocytes, including B cells, CD4(+) and CD8(+) T cells, and the frequency of ST2(+) Treg cells. In conclusion, IL-33 acts as a potent immune modulator protecting the liver through activation of ST2(+) Treg cells and control of NK cells.
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Affiliation(s)
- Gregory Noel
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Muhammad Imran Arshad
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Aveline Filliol
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Valentine Genet
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Michel Rauch
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Catherine Lucas-Clerc
- Université de Rennes 1, Rennes, France; Service de Biochimie CHU Rennes, Université de Rennes 1; Rennes, France
| | - Agnès Lehuen
- Inserm UMRS 1016-CNRS UMR 8104, Institut Cochin, Université Paris, Descartes, France; and
| | - Jean-Philippe Girard
- Institut de Pharmacologie et de Biologie Structurale, Centre National de la Recherche Scientifique (IPBS-CNRS), Université de Toulouse, Toulouse, France
| | - Claire Piquet-Pellorce
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France
| | - Michel Samson
- Institut National de la Santé et de la Recherche Médicale (Inserm), Institut de Recherche Santé Environnement & Travail (IRSET), Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 CNRS-US18 Inserm, Rennes, France;
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Mehraj V, Ponte R, Routy JP. The Dynamic Role of the IL-33/ST2 Axis in Chronic Viral-infections: Alarming and Adjuvanting the Immune Response. EBioMedicine 2016; 9:37-44. [PMID: 27397514 PMCID: PMC4972565 DOI: 10.1016/j.ebiom.2016.06.047] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/25/2016] [Accepted: 06/30/2016] [Indexed: 12/18/2022] Open
Abstract
Interleukin 33 (IL-33), a member of the IL-1 family, is constitutively expressed in epithelial and in endothelial cells at barrier sites, acting as a danger signal and adjuvanting the immune response following tissue damage and infection. Originally implicated in allergy, IL-33 is also known to be involved in innate and adaptive immune responses by enhancing natural killer, Th1, and CD4 and CD8 T-cell functions. The nature of the antiviral immune response orchestrated by IL-33 depends on the site of infection, the duration of the disease and the cytokine milieu. In this review, we focus on the distinctive contribution of IL-33 as an anti-infective and proinflammatory cytokine in response to cell death and viral infections. The dynamic role of IL-33 in the acute and chronic phases of infection with HIV, hepatitis B and C viruses, and with CMV is highlighted. This review will also discuss the potential immunotherapeutic and adjuvant roles of IL-33. Search Strategy and Selection Criteria English language, indexed publications in PubMed were searched using combinations of following key words: “interleukin-33”, “IL-33”, “suppression of tumorigenicity 2”, ST2”, “sST2”, “HIV”, “HBV”, “HCV”, “CMV”, “HPV”, “immunotherapy” and “vaccine”. Except for seminal studies, only articles published between 2010 and 2016 were included. IL-33, a guardian of barriers, acts as an alarmin and as an enhancer of immune responses following injury or infection. sST2, the IL-33 decoy receptor, is considered as a biomarker for allergies, cardiac conditions and infections. IL-33 has immunotherapeutic and/or adjuvant potential.
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Affiliation(s)
- Vikram Mehraj
- Research Institute of the McGill University Health Centre, Montréal, Québec, Canada; Chronic Viral Illness Service, McGill University Health Centre, Montréal, Québec, Canada.
| | - Rosalie Ponte
- Research Institute of the McGill University Health Centre, Montréal, Québec, Canada; Chronic Viral Illness Service, McGill University Health Centre, Montréal, Québec, Canada.
| | - Jean-Pierre Routy
- Research Institute of the McGill University Health Centre, Montréal, Québec, Canada; Chronic Viral Illness Service, McGill University Health Centre, Montréal, Québec, Canada; Division of Hematology, McGill University Health Centre, Montréal, Québec, Canada.
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111
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Xu J, Zheng J, Song P, Zhou Y, Guan S. IL-33/ST2 pathway in a bleomycin-induced pulmonary fibrosis model. Mol Med Rep 2016; 14:1704-8. [DOI: 10.3892/mmr.2016.5446] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 02/15/2016] [Indexed: 11/05/2022] Open
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112
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HMGB1 regulates IL-33 expression in acute respiratory distress syndrome. Int Immunopharmacol 2016; 38:267-74. [PMID: 27318792 DOI: 10.1016/j.intimp.2016.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 05/23/2016] [Accepted: 06/13/2016] [Indexed: 12/24/2022]
Abstract
The development and progression of acute respiratory distress syndrome (ARDS) has been shown to be regulated by cytokines. IL-33 and HMGB1 are conventionally considered as nuclear proteins and have a proinflammatory role. Studies have confirmed that HMGB1 has a significant role in ARDS, but few studies have provided direct evidence to confirm that IL33 is involved in ARDS. The purpose of our study was to determine whether IL-33 is elevated in ARDS and the relationship between IL-33 and HMGB1 in ARDS. We established a mouse model of LPS-induced lung inflammation/injury. Serum, bronchoalveolar lavage fluid (BALF) and lung tissues were obtained to determine the related indicators. IL-33 levels in both the serum, BALF and lungs were significantly increased at 24h after LPS administration compared to the control group. We also found that HMGB1 and other Th1 cytokine/chemokine levels in serum and BALF were also significantly elevated, but the Th2 cytokine levels in serum and BALF didn't increase. To further study the relationship between IL-33 and HMGB1, mice were pretreated with glycyrrhizin (an inhibitor of HMGB1) prior to LPS administration. We found that the expression of IL-33 and HMGB1 were markedly lower than those in the LPS group and the lung injury was ameliorated. The levels of other Th1 cytokines and chemokines in serum and BALF were also significantly decreased. The results showed that IL-33 is likely a major factor in ARDS, and the release of HMGB1 may be correlated with up-regulation of IL-33 expression.
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113
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IL-33-Dependent Group 2 Innate Lymphoid Cells Promote Cutaneous Wound Healing. J Invest Dermatol 2016; 136:487-496. [PMID: 26802241 PMCID: PMC4731037 DOI: 10.1038/jid.2015.406] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/10/2015] [Accepted: 09/23/2015] [Indexed: 01/10/2023]
Abstract
Breaches in the skin barrier initiate an inflammatory immune response that is critical for successful wound healing. Innate lymphoid cells (ILCs) are a recently identified population of immune cells that reside at epithelial barrier surfaces such as the skin, lung and gut and promote pro-inflammatory or epithelial repair functions following exposure to allergens, pathogens or chemical irritants. However, the potential role of ILCs in regulating cutaneous wound healing remains undefined. Here, we demonstrate that cutaneous injury promotes an IL-33-dependent group 2 ILC (ILC2) response and that abrogation of this response impairs re-epithelialization and efficient wound closure. Additionally, we provide evidence suggesting that an analogous ILC2 response is operational in acute wounds of human skin. Together, these results indicate that IL-33-responsive ILC2s are an important link between the cutaneous epithelium and the immune system, acting to promote the restoration of skin integrity following injury.
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114
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Deleuran T, Overgaard S, Vilstrup H, Jepsen P. Cirrhosis is a risk factor for total hip arthroplasty for avascular necrosis. Acta Orthop 2016; 87:231-4. [PMID: 26900635 PMCID: PMC4900083 DOI: 10.3109/17453674.2016.1151122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Background and purpose - There are limited data on risk factors for avascular necrosis of the hip, but cirrhosis has been proposed as a risk factor. We examined the association between cirrhosis and incidence of total hip arthroplasty for avascular necrosis. Methods - We used nationwide healthcare data to identify all Danish residents diagnosed with cirrhosis in 1994-2011, and matched them 1:5 by age and sex to non-cirrhotic reference individuals from the general population. We excluded people with a previous total hip arthroplasty, a previous hip fracture, or a previous diagnosis of avascular necrosis. We used stratified Cox regression to estimate the hazard ratio (HR) for cirrhosis patients relative to reference individuals, adjusting for potential confounders. We used the cumulative incidence function to compute 5-year risks. Results - We included 25,421 cirrhosis patients and 114,052 reference individuals. Their median age was 57 years, and 65% were men. 45 cirrhosis patients and 44 reference individuals underwent total hip arthroplasty for avascular necrosis. Cirrhosis patients' HR for a total hip arthroplasty for avascular necrosis was 10 (95% CI: 6-17), yet their 5-year risk of avascular necrosis was only 0.2%. For the reference individuals, the 5-year risk was 0.02%. Interpretation - Cirrhosis is a strong risk factor for avascular necrosis of the hip, but it is rare even in cirrhosis patients.
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Affiliation(s)
- Thomas Deleuran
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus,,Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus,,Correspondence:
| | - Søren Overgaard
- Department of Orthopedic Surgery and Traumatology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Hendrik Vilstrup
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus,
| | - Peter Jepsen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus,,Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus,
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Yang Y, Wang JB, Li YM, Zhao YU, Wang R, Wu Q, Zheng RS, Ou YR. Role of IL-33 expression in oncogenesis and development of human hepatocellular carcinoma. Oncol Lett 2016; 12:429-436. [PMID: 27347162 PMCID: PMC4906799 DOI: 10.3892/ol.2016.4622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 04/22/2016] [Indexed: 12/30/2022] Open
Abstract
Interleukin-33 (IL-33), a newly-discovered cytokine belonging to the IL-1 family, serves an important role in inflammation. However, it is not clear whether IL-33 is of clinical significance in hepatocarcinogenesis. The present study was designed to investigate the role of IL-33 during oncogenesis and development of hepatocellular carcinoma (HCC). IL-33 protein expression was detected in 76 HCC (including 36 para-carcinoma), 33 cirrhosis, 30 hepatitis, and 20 normal liver tissues using immunohistochemistry. IL-33 mRNA expression in carcinoma and para-carcinoma tissues was evaluated by reverse transcription-polymerase chain reaction (RT-PCR). The possible correlation between IL-33 and clinicopathological parameters of HCC was also analyzed. Significant differences in IL-33 expression were not observed among normal, hepatic, and cirrhotic tissues (P>0.05), whereas the level of protein positive rate was markedly reduced in HCC tissues (P<0.01). Positive staining of IL-33 in non-cancerous liver (NCL) tissues (i.e. normal, hepatitis, and liver cirrhosis) was located predominantly in the nucleus and occasionally in the cytoplasm of hepatocytes; however, the expression in HCC tissues was mostly restricted to the cytoplasm. A significant alteration in protein localization was observed in HCC tissues as compared with NCL tissues (P<0.01). In comparison with HCC tissues, cytoplasmic staining of IL-33 was increased in para-carcinoma tissues. RT-PCR assay further confirmed relatively high mRNA expression levels of IL-33 in para-carcinoma tissues. IL-33 expression was significantly negatively associated with tumor histological grade (r=−0.279, P=0.015), but not with year, gender, tumor size, clinical stage, HCC with hepatitis and cirrhosis background, lymph node metastasis or intrahepatic vascular embolism (P>0.05). Therefore, the aberrant expression of IL-33 is associated with oncogenesis and progression of HCC and the cytoplasmic accumulation of the protein may serve a role in hepatocarcinogenesis.
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Affiliation(s)
- Yan Yang
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Jun-Bin Wang
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Yu-Mei Li
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Y U Zhao
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Rui Wang
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Qiong Wu
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Rong-Sheng Zheng
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Yu-Rong Ou
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
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Huan SL, Zhao JG, Wang ZL, Gao S, Wang K. Relevance of serum interleukin-33 and ST2 levels and the natural course of chronic hepatitis B virus infection. BMC Infect Dis 2016; 16:200. [PMID: 27180842 PMCID: PMC4868038 DOI: 10.1186/s12879-016-1543-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 05/06/2016] [Indexed: 12/28/2022] Open
Abstract
Background Interleukin-33 (IL-33) and ST2 have been demonstrated to be associated with liver damage. However, their potential value in hepatitis B virus (HBV) infection remains unknown. This study was designed to investigate the change of serum IL-33 and ST2 levels in the natural course of chronic HBV infection. Methods A total of 120 patients with chronic hepatitis B (CHB), 20 chronic hepatitis B virus carriers in immunotolerant phase and 28 healthy controls were enrolled in this study. All patients with CHB were divided into four groups according to their serum ALT levels. The serum levels of IL-33 and ST2 of all participants were determined by enzyme-linked immunosorbent assay, and compared between each two out of those six groups. Results No significant differences were found in serum levels of IL-33 and ST2 between the group of CHB with ALT 1–2 upper limit of normal and the healthy controls (P = 0.354 for IL-33 and P = 0.815 for ST2). Other than that, there were significant differences when serum levels of IL-33 and ST2 were compared between any other two out of those six groups (P < 0.05, respectively). The overall correlation analysis indicated that changes of serum IL-33 and ST2 levels were positively associated with ALT levels in patients with chronic HBV infection (rs = 0.879, P < 0.001 for IL-33 and rs = 0.923, P < 0.001 for ST2). No significant differences were found when the serum levels of ALT, IL-33 and ST2 were compared between patients with HBeAg-positive CHB and HBeAg-negative CHB. Conclusions Our study revealed that the serum levels of IL-33 and ST2 varied in different courses of chronic hepatitis B virus infection. The serum levels of IL-33 and ST2 elevated as serum ALT levels increased in patients with CHB. They might indicate liver damage for patients with CHB, just like ALT.
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Affiliation(s)
- Shu-Ling Huan
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Ji-Guang Zhao
- Department of clinical laboratory, Qingdao Municipal Infectious Disease Hospital, Qingdao, 266033, Shandong, China
| | - Zhen-Li Wang
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Shuai Gao
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Kai Wang
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China. .,Institute of Hepatology, Shandong University, Wenhuaxi Road 107#, Jinan, 250012, Shandong, China.
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Potential Therapeutic Aspects of Alarmin Cytokine Interleukin 33 or Its Inhibitors in Various Diseases. Clin Ther 2016; 38:1000-1016.e1. [PMID: 26992663 DOI: 10.1016/j.clinthera.2016.02.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/17/2016] [Accepted: 02/17/2016] [Indexed: 12/19/2022]
Abstract
PURPOSE The purpose of this review was to examine the comprehensively accumulated data regarding potential therapeutic aspects of exogenous administration of interleukin 33 (IL-33) or its antagonists in allergic, cancerous, infectious, and inflammatory diseases. METHODS A selected review was undertaken of publications that examined the protective and exacerbating effects of IL-33 or its inhibitors in different diseases. Mechanisms of action are summarized to examine the putative role of IL-33 in various diseases. FINDINGS IL-33 promoted antibacterial, antiviral, anti-inflammatory, and vaccine adjuvant functions. However, in TH2-biased respiratory, allergic, parasitic, and inflammatory conditions, IL-33 exhibited disease-sensitizing effects. The alarmin cytokine IL-33 induced protective effects in diseases via recruitment of regulatory T cells; antiviral CD8(+) cells, natural killer cells, γδ T cells, and nuocytes; antibacterial and antifungal neutrophils or macrophages; vaccine-associated B/T cells; and inhibition of nuclear factor-κB-mediated gene transcription. In contrast, IL-33 exacerbated the disease process by increasing TH2 cytokines, IgE and eosinophilic immune responses, and inhibition of leukocyte recruitment in various diseases. IMPLICATIONS The protective or exacerbated aspects of use of IL-33 or its inhibitors are dependent on the type of infection or inflammatory condition, duration of disease (acute or chronic), organ involved, cytokine microenvironment, dose or kinetics of IL-33, and genetic predisposition. The alarmin cytokine IL-33 acts at cellular, molecular, and transcriptional levels to mediate pluripotent functions in various diseases and has potential therapeutic value to mitigate the disease process.
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118
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Yu Q, Li XY, Cheng XD, Shen LP, Fang F, Zhang B, Hua H, Yan C, Tang RX, Zheng KY. Expression and potential roles of IL-33/ST2 in the immune regulation during Clonorchis sinensis infection. Parasitol Res 2016; 115:2299-305. [PMID: 26944417 DOI: 10.1007/s00436-016-4974-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/22/2016] [Indexed: 12/17/2022]
Abstract
During clonorchiasis, immune responses of hosts are responsible for the removal of the worms and also are involved in the progress of the pathological damage caused by Clonorchis sinensis. Interleukin-33 (IL-33), a recently described cytokine signaling through the ST2 receptor, has emerged as a potent inducer to bile duct proliferation and fibrosis; however, little is known of this signaling in the pathogen-caused periductal inflammation and fibrosis. In the present study, using immunohistochemistry, real-time PCR, enzyme-linked immunosorbent assay (ELISA), and flow cytometry, we studied the expression of IL-33/ST2 during C. sinensis infection, as well as their potential roles in C. sinensis-induced host immune responses. The results showed that a higher level of IL-33 was detected in the sera of patients of clonorchiasis (n = 45), compared with in those of healthy donors (n = 16). Similarly, in FVB mice experimentally infected with C. sinensis, a higher level of IL-33 was detected at latent stage both in the serum and in the liver, as well as the up-regulated expression of ST2 receptor on the inflammatory cells, especially on CD4(+) T cells in the liver of infected mice. Our results, for the first time, indicated that the increased IL-33/ST2 may be involved in the regulation of immunopathology induced by C. sinensis.
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Affiliation(s)
- Qian Yu
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Xiang-Yang Li
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Xiao-Dan Cheng
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Li-Ping Shen
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Fan Fang
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Bo Zhang
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Hui Hua
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Chao Yan
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China
| | - Ren-Xian Tang
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China.
| | - Kui-Yang Zheng
- Department of Pathogenic Biology and Immunology, Laboratory of Infection and Immunity, Xuzhou Medical College, Xuzhou, 221004, Jiangsu Province, People's Republic of China.
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119
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van Beek JJP, Martens AWJ, Bakdash G, de Vries IJM. Innate Lymphoid Cells in Tumor Immunity. Biomedicines 2016; 4:biomedicines4010007. [PMID: 28536374 PMCID: PMC5344245 DOI: 10.3390/biomedicines4010007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/05/2016] [Accepted: 02/15/2016] [Indexed: 12/27/2022] Open
Abstract
Innate lymphoid cells (ILCs) are a group of immune cells of the lymphoid lineage that do not possess antigen specificity. The group includes natural killer (NK) cells, lymphoid tissue inducer (LTi) cells and the recently identified ILC1s, ILC2s and ILC3s. Although the role of NK cells in the context of cancer has been well established, the involvement of other ILC subsets in cancer progression and resistance is just emerging. Here, we review the literature on the role of the different ILC subsets in tumor immunity and discuss its implications for cancer treatment and monitoring.
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Affiliation(s)
- Jasper J P van Beek
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6525 GA Nijmegen, The Netherlands.
| | - Anne W J Martens
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6525 GA Nijmegen, The Netherlands.
| | - Ghaith Bakdash
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6525 GA Nijmegen, The Netherlands.
| | - I Jolanda M de Vries
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6525 GA Nijmegen, The Netherlands.
- Department of Medical Oncology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6525 GA Nijmegen, The Netherlands.
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120
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Tian Z, van Velkinburgh JC, Wu Y, Ni B. Innate lymphoid cells involve in tumorigenesis. Int J Cancer 2016; 138:22-9. [PMID: 25604320 DOI: 10.1002/ijc.29443] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 01/14/2015] [Indexed: 12/17/2022]
Abstract
Innate lymphoid cells (ILCs) promptly initiate cytokine responses to pathogen exposure in the mucosa and mucosal-associated lymphoid tissues. ILCs were recently categorized as being of the lymphoid lineage and have been classified into three groups. ILCs play important roles in immunity against pathogens, and an anti-tumor immune-related function was recently demonstrated. In this review we discuss whether and how ILCs involve in the tumorigenesis, providing new insights into the mechanisms underlying the particular functions of ILCs as well as the potential targets for tumor intervention.
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Affiliation(s)
- Zhiqiang Tian
- Institute of Immunology PLA, Third Military Medical University, Chongqing, China
| | | | - Yuzhang Wu
- Institute of Immunology PLA, Third Military Medical University, Chongqing, China
| | - Bing Ni
- Institute of Immunology PLA, Third Military Medical University, Chongqing, China
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121
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Hams E, Bermingham R, Fallon PG. Macrophage and Innate Lymphoid Cell Interplay in the Genesis of Fibrosis. Front Immunol 2015; 6:597. [PMID: 26635811 PMCID: PMC4655423 DOI: 10.3389/fimmu.2015.00597] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/06/2015] [Indexed: 01/15/2023] Open
Abstract
Fibrosis is a characteristic pathological feature of an array of chronic diseases, where development of fibrosis in tissue can lead to marked alterations in the architecture of the affected organs. As a result of this process of sustained attrition to organs, many diseases that involve fibrosis are often progressive conditions and have a poor long-term prognosis. Inflammation is often a prelude to fibrosis, with innate and adaptive immunity involved in both the initiation and regulation of the fibrotic process. In this review, we will focus on the emerging roles of the newly described innate lymphoid cells (ILCs) in the generation of fibrotic disease with an examination of the potential interplay between ILC and macrophages and the adaptive immune system.
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Affiliation(s)
- Emily Hams
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin , Dublin , Ireland
| | - Rachel Bermingham
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin , Dublin , Ireland
| | - Padraic G Fallon
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin , Dublin , Ireland
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122
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Chen H, Sun Y, Lai L, Wu H, Xiao Y, Ming B, Gao M, Zou H, Xiong P, Xu Y, Tan Z, Gong F, Zheng F. Interleukin-33 is released in spinal cord and suppresses experimental autoimmune encephalomyelitis in mice. Neuroscience 2015; 308:157-68. [DOI: 10.1016/j.neuroscience.2015.09.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/03/2015] [Accepted: 09/04/2015] [Indexed: 01/01/2023]
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123
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Oztas E, Kuzu UB, Zengin NI, Kalkan IH, Saygili F, Yildiz H, Celik HT, Akdogan M, Kilic MY, Koksal AS, Odemis B, Suna N, Kayacetin E. Can Serum ST2 Levels Be Used as a Marker of Fibrosis in Chronic Hepatitis B Infection? Medicine (Baltimore) 2015; 94:e1889. [PMID: 26632683 PMCID: PMC5058952 DOI: 10.1097/md.0000000000001889] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/27/2015] [Accepted: 09/29/2015] [Indexed: 12/13/2022] Open
Abstract
Interleukin 33 (IL-33) is a cytokine belonging to the IL-1 superfamily. Soluble ST2 (sST2) binds to IL-33 and by functioning as trap receptor inhibits signal sending to Th2 via transmembrane ST2. Because Th2-type cytokines play an important role in fibrosis, the aim of this study is to determine whether sST2 can be used as a marker of fibrosis in chronic hepatitis B (CHB) patients or not.The study included 19 healthy controls, 54 patients with CHB, and 14 patients with cirrhosis because of CHB. The aspartate aminotransferase-to-platelet ratio index (APRI) and fibrosis index based on the 4 factors (FIB-4) scores also calculated, and correlations between liver biopsies, sST2 levels, and these scores were analyzed in CHB and cirrhosis patients.The sST2 levels in patients with CHB were significantly higher than those in the control group subjects (median: 1133 pg/mL vs 762.5 pg/mL, respectively [P = 0.035]). In CHB patients, the METAVIR fibrosis score (stages from 0 to 4) showed a moderate correlation with serum sST2 level (r = 0.396, P = 0.004) and a weak correlation with FIB-4 score (r = 0.359, P = 0.008), but no correlation with APRI score (r = 0.253, P = 0.06). The under the curve value of serum sST2 was 0.68, and its prediction of significant fibrosis (METAVIR score ≥2) in values >674 pg/mL had a sensitivity of 91.7% and specificity of 40% (P = 0.009). According to multiple logistic regression analysis, only METAVIR fibrosis stage was found to be an independent predictor of serum sST2 elevation in CHB patients (P = 0.04).The sST2 level can be used for differentiating significant fibrosis from mild fibrosis in CHB patients. However, the efficacy of this marker should be verified by larger studies in the future.
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Affiliation(s)
- Erkin Oztas
- From the Department of Gastroenterology (EO, UBK, IHK, FS, FOO, HY, MA, MYK, AŞK, SK, BO, NS, EK), Turkiye Yuksek Ihtisas Education and Research Hospital; Department of Pathology (NIZ), Turkiye Yuksek Ihtisas Education and Research Hospital; and Department of Biochemistry (HTÇ), Turgut Ozal University, Ankara, Turkey
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Ilyas SI, Eaton JE, Gores GJ. Primary Sclerosing Cholangitis as a Premalignant Biliary Tract Disease: Surveillance and Management. Clin Gastroenterol Hepatol 2015; 13:2152-65. [PMID: 26051390 PMCID: PMC4618039 DOI: 10.1016/j.cgh.2015.05.035] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/20/2015] [Accepted: 05/22/2015] [Indexed: 02/07/2023]
Abstract
Primary sclerosing cholangitis (PSC) is a premalignant biliary tract disease that confers a significant risk for the development of cholangiocarcinoma (CCA). The chronic biliary tract inflammation of PSC promotes pro-oncogenic processes such as cellular proliferation, induction of DNA damage, alterations of the extracellular matrix, and cholestasis. The diagnosis of malignancy in PSC can be challenging because inflammation-related changes in PSC may produce dominant biliary tract strictures mimicking CCA. Biomarkers such as detection of methylated genes in biliary specimens represent noninvasive techniques that may discriminate malignant biliary ductal changes from PSC strictures. However, conventional cytology and advanced cytologic techniques such as fluorescence in situ hybridization for polysomy remain the practice standard for diagnosing CCA in PSC. Curative treatment options of malignancy arising in PSC are limited. For a subset of patients selected by using stringent criteria, liver transplantation after neoadjuvant chemoradiation is a potential curative therapy. However, most patients have advanced malignancy at the time of diagnosis. Advances directed at identifying high-risk patients, early cancer detection, and development of chemopreventive strategies will be essential to better manage the cancer risk in this premalignant disease. A better understanding of dysplasia definition and especially its natural history is also needed in this disease. Herein, we review recent developments in our understanding of the risk factors, pathogenic mechanisms of PSC associated with CCA, as well as advances in early detection and therapies.
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Affiliation(s)
- Sumera I Ilyas
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - John E Eaton
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Gregory J Gores
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota.
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125
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Interleukin-1 Family Cytokines in Liver Diseases. Mediators Inflamm 2015; 2015:630265. [PMID: 26549942 PMCID: PMC4624893 DOI: 10.1155/2015/630265] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/27/2015] [Indexed: 02/06/2023] Open
Abstract
The gene encoding IL-1 was sequenced more than 30 years ago, and many related cytokines, such as IL-18, IL-33, IL-36, IL-37, IL-38, IL-1 receptor antagonist (IL-1Ra), and IL-36Ra, have since been identified. IL-1 is a potent proinflammatory cytokine and is involved in various inflammatory diseases. Other IL-1 family ligands are critical for the development of diverse diseases, including inflammatory and allergic diseases. Only IL-1Ra possesses the leader peptide required for secretion from cells, and many ligands require posttranslational processing for activation. Some require inflammasome-mediated processing for activation and release, whereas others serve as alarmins and are released following cell membrane rupture, for example, by pyroptosis or necroptosis. Thus, each ligand has the proper molecular process to exert its own biological functions. In this review, we will give a brief introduction to the IL-1 family cytokines and discuss their pivotal roles in the development of various liver diseases in association with immune responses. For example, an excess of IL-33 causes liver fibrosis in mice via activation and expansion of group 2 innate lymphoid cells to produce type 2 cytokines, resulting in cell conversion into pro-fibrotic M2 macrophages. Finally, we will discuss the importance of IL-1 family cytokine-mediated molecular and cellular networks in the development of acute and chronic liver diseases.
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126
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Cheng LS, Liu Y, Jiang W. Restoring homeostasis of CD4 + T cells in hepatitis-B-virus-related liver fibrosis. World J Gastroenterol 2015; 21:10721-10731. [PMID: 26478664 PMCID: PMC4600574 DOI: 10.3748/wjg.v21.i38.10721] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 06/19/2015] [Accepted: 09/02/2015] [Indexed: 02/06/2023] Open
Abstract
Immune-mediated liver injury is widely seen during hepatitis B virus (HBV) infection. Unsuccessful immune clearance of HBV results in chronic hepatitis and increases the risk of liver cirrhosis and hepatocellular carcinoma. HBV-related liver fibrosis (HBVLF), occurring as a result of HBV-induced chronic hepatitis, is a reversible, intermediate stage of chronic hepatitis B (CHB) and liver cirrhosis. Therefore, defining the pathogenesis of HBVLF is of practical significance for achieving better clinical outcomes. Recently, the homeostasis of CD4+ T cells was considered to be pivotal in the process of HBVLF. To better uncover the underlying mechanisms, in this review, we systematically retrospect the impacts of different CD4+ T-cell subsets on CHB and HBVLF. We emphasize CD4+ T-cell homeostasis and the important balance between regulatory T (Treg) and T helper 17 (Th17) cells. We discuss some cytokines associated with Treg and Th17 cells such as interleukin (IL)-17, IL-22, IL-21, IL-23, IL-10, IL-35 and IL-33, as well as surface molecules such as programmed cell death protein 1, cytotoxic T lymphocyte-associated antigen 4, T cell immunoglobulin domain and mucin domain-containing molecule 3 and cannabinoid receptor 2 that have potential therapeutic implications for the homeostasis of CD4+ T cells in CHB and HBVLF.
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Arshad MI, Guihard P, Danger Y, Noel G, Le Seyec J, Boutet MA, Richards CD, L'Helgoualc'h A, Genet V, Lucas-Clerc C, Gascan H, Blanchard F, Piquet-Pellorce C, Samson M. Oncostatin M induces IL-33 expression in liver endothelial cells in mice and expands ST2+CD4+ lymphocytes. Am J Physiol Gastrointest Liver Physiol 2015; 309:G542-53. [PMID: 26251474 DOI: 10.1152/ajpgi.00398.2014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 06/22/2015] [Indexed: 01/31/2023]
Abstract
Interleukin (IL)-33 is crucially involved in liver pathology and drives hepatoprotective functions. However, the regulation of IL-33 by cytokines of the IL-6 family, including oncostatin M (OSM) and IL-6, is not well studied. The aim of the present study was to determine whether OSM mediates regulation of IL-33 expression in liver cells. Intramuscular administration in mice of an adenovirus encoding OSM (AdOSM) leads to increase in expression of OSM in muscles, liver, and serum of AdOSM-infected mice compared with control mice. The increase of circulating OSM markedly regulated mRNA of genes associated with blood vessel biology, chemotaxis, cellular death, induction of cell adhesion molecules, and the alarmin cytokine IL-33 in liver. Steady-state IL-33 mRNA was upregulated by OSM at an early phase (8 h) following AdOSM infection. At the protein level, the expression of IL-33 was significantly induced in liver endothelial cells [liver sinusoidal endothelial cells (LSEC) and vascular endothelial cells] with a peak at 8 days post-AdOSM infection in mice. In addition, we found OSM-stimulated human microvascular endothelial HMEC-1 cells and human LSEC/TRP3 cells showed a significant increase in expression of IL-33 mRNA in a dose-dependent manner in cell culture. The OSM-mediated overexpression of IL-33 was associated with the activation/enrichment of CD4(+)ST2(+) cells in liver of AdOSM-infected mice compared with adenovirus encoding green fluorescent protein-treated control mice. In summary, these data suggest that the cytokine OSM regulates the IL-33 expression in liver endothelial cells in vivo and in HMEC-1/TRP3 cells in vitro and may specifically expand the target CD4(+)ST2(+) cells in liver.
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Affiliation(s)
- Muhammad Imran Arshad
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Pierre Guihard
- Institut National de la Santé et de la Recherche Médicale, UMR 957, Equipe Labellisée LIGUE 2012, Nantes, France
| | - Yannic Danger
- Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France; EFS, Rennes, France
| | - Gregory Noel
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Jacques Le Seyec
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Marie-Astrid Boutet
- Institut National de la Santé et de la Recherche Médicale, UMR 957, Equipe Labellisée LIGUE 2012, Nantes, France
| | - Carl D Richards
- McMaster Immunology Research Center, McMaster University, Hamilton, Ontario, Canada
| | - Annie L'Helgoualc'h
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Valentine Genet
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Catherine Lucas-Clerc
- Université de Rennes 1, Rennes, France; Service de Biochimie Centre Hospitalier Universitaire Rennes, Université de Rennes 1, Rennes, France
| | - Hugues Gascan
- Centre National de la Recherche Scientifique, UMR 6290, Institute of Genetics and Development of Rennes, Rennes, France; and
| | - Frédéric Blanchard
- Institut National de la Santé et de la Recherche Médicale, UMR 957, Equipe Labellisée LIGUE 2012, Nantes, France
| | - Claire Piquet-Pellorce
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France
| | - Michel Samson
- Institut National de la Santé et de la Recherche Médicale, U1085, Institut de Recherche Santé Environnement et Travail, Rennes, France; Université de Rennes 1, Rennes, France; Structure Fédérative BioSit UMS 3480 Centre National de la Recherche Scientifique-US18 Institut National de la Santé et de la Recherche Médicale, Rennes, France;
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Eosinophils and IL-33 Perpetuate Chronic Inflammation and Fibrosis in a Pediatric Population with Stricturing Crohn's Ileitis. Inflamm Bowel Dis 2015; 21. [PMID: 26218140 PMCID: PMC4567482 DOI: 10.1097/mib.0000000000000512] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Fibrostenosis and stricture are well-recognized endpoints in Crohn's disease (CD). We hypothesized that stricturing CD is characterized by eosinophilia and epithelial IL-33. We proposed that eosinophil exposure to IL-33 would perpetuate inflammatory chronicity and subsequent fibrostenosis. METHODS We performed a retrospective study of 74 children with inflammatory and stricturing ileal CD comparing clinicopathological features to immunohistochemical measures of eosinophilia and IL-33. To scrutinize eosinophil patterns, we developed a novel eosinophil peroxidase score encompassing number, distribution, and degranulation. Human eosinophils and intestinal fibroblasts were cultured with IL-33 and IL-13, and inflammatory and remodeling parameters were assessed. Antieosinophil therapy was also administered to the Crohn's-like ileitis model (SAMP1/SkuSlc). RESULTS Our novel eosinophil peroxidase score was more sensitive than H&E staining, revealing significant differences in eosinophil patterns, comparing inflammatory and stricturing pediatric CD. A significant relationship between ileal eosinophilia and complicated clinical/histopathological phenotype including fibrosis was determined. IL-33 induced significant eosinophil peroxidase secretion and IL-13 production. Exposure to eosinophils in the presence of IL-33, "primed" fibroblasts to increase proinflammatory cytokines (TNF-α, IL-1β, and IL-6), eosinophil-associated chemokines (CCL24 and CCL26), and IL-13Rα2 production. Production of fibrogenic molecules (collagen 1A2, fibronectin, and periostin) increased after exposure of "primed" fibroblasts to IL-13. Epithelial-IL-33 was increased in pediatric Crohn's ileitis and strongly associated with clinical and histopathological activity, ileal eosinophilia, and complicated fibrostenotic disease. SAMP1/SkuSlc eosinophil-targeted treatment resulted in significant improvements in inflammation and remodeling. CONCLUSIONS Our study of specimens from pediatric patients with ileal CD linked eosinophil patterns and IL-33 to fibrosis and suggested that these may contribute to the perpetuation of inflammation and subsequent stricture in pediatric CD.
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Pinto SM, Nirujogi RS, Rojas PL, Patil AH, Manda SS, Subbannayya Y, Roa JC, Chatterjee A, Prasad TSK, Pandey A. Quantitative phosphoproteomic analysis of IL-33-mediated signaling. Proteomics 2015; 15:532-44. [PMID: 25367039 DOI: 10.1002/pmic.201400303] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/25/2014] [Accepted: 10/28/2014] [Indexed: 12/13/2022]
Abstract
Interleukin-33 (IL-33) is a novel member of the IL-1 family of cytokines that plays diverse roles in the regulation of immune responses. IL-33 exerts its effects through a heterodimeric receptor complex resulting in the production and release of proinflammatory cytokines. A detailed understanding of the signaling pathways activated by IL-33 is still unclear. To gain insights into the IL-33-mediated signaling mechanisms, we carried out a SILAC-based global quantitative phosphoproteomic analysis that resulted in the identification of 7191 phosphorylation sites derived from 2746 proteins. We observed alterations in the level of phosphorylation in 1050 sites corresponding to 672 proteins upon IL-33 stimulation. We report, for the first time, phosphorylation of multiple protein kinases, including mitogen-activated protein kinase activated protein kinase 2 (Mapkapk2), receptor (TNFRSF) interacting serine-threonine kinase 1 (Ripk1), and NAD kinase (Nadk) that are induced by IL-33. In addition, we observed IL-33-induced phosphorylation of several protein phosphatases including protein tyrosine phosphatase, nonreceptor-type 12 (Ptpn12), and inositol polyphosphate-5-phosphatase D (Inpp5d), which have not been reported previously. Network analysis revealed an enrichment of actin binding and cytoskeleton reorganization that could be important in macrophage activation induced by IL-33. Our study is the first quantitative analysis of IL-33-regulated phosphoproteome. Our findings significantly expand the understanding of IL-33-mediated signaling events and have the potential to provide novel therapeutic targets pertaining to immune-related diseases such as asthma where dysregulation of IL-33 is observed. All MS data have been deposited in the ProteomeXchange with identifier PXD000984 (http://proteomecentral.proteomexchange.org/dataset/PXD000984).
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Affiliation(s)
- Sneha M Pinto
- Institute of Bioinformatics, International Technology Park, Bangalore, India; Manipal University, Madhava Nagar, Manipal, India; McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Molofsky AB, Savage AK, Locksley RM. Interleukin-33 in Tissue Homeostasis, Injury, and Inflammation. Immunity 2015; 42:1005-19. [PMID: 26084021 DOI: 10.1016/j.immuni.2015.06.006] [Citation(s) in RCA: 431] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Indexed: 12/12/2022]
Abstract
Interleukin-33 (IL-33) is a nuclear-associated cytokine of the IL-1 family originally described as a potent inducer of allergic type 2 immunity. IL-33 signals via the receptor ST2, which is highly expressed on group 2 innate lymphoid cells (ILC2s) and T helper 2 (Th2) cells, thus underpinning its association with helminth infection and allergic pathology. Recent studies have revealed ST2 expression on subsets of regulatory T cells, and for a role for IL-33 in tissue homeostasis and repair that suggests previously unrecognized interactions within these cellular networks. IL-33 can participate in pathologic fibrotic reactions, or, in the setting of microbial invasion, can cooperate with inflammatory cytokines to promote responses by cytotoxic NK cells, Th1 cells, and CD8(+) T cells. Here, we highlight the regulation and function of IL-33 and ST2 and review their roles in homeostasis, damage, and inflammation, suggesting a conceptual framework for future studies.
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Affiliation(s)
- Ari B Molofsky
- Department of Microbiology & Immunology, University of California, San Francisco, 94143-0795, USA; Department of Laboratory Medicine, University of California, San Francisco, 94143-0795, USA
| | - Adam K Savage
- Howard Hughes Medical Institute, University of California, San Francisco, 94143-0795, USA; Department of Microbiology & Immunology, University of California, San Francisco, 94143-0795, USA
| | - Richard M Locksley
- Howard Hughes Medical Institute, University of California, San Francisco, 94143-0795, USA; Department of Medicine, University of California, San Francisco, 94143-0795, USA; Department of Microbiology & Immunology, University of California, San Francisco, 94143-0795, USA.
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Innate Immunity and Biomaterials at the Nexus: Friends or Foes. BIOMED RESEARCH INTERNATIONAL 2015; 2015:342304. [PMID: 26247017 PMCID: PMC4515263 DOI: 10.1155/2015/342304] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/15/2015] [Accepted: 06/22/2015] [Indexed: 01/04/2023]
Abstract
Biomaterial implants are an established part of medical practice, encompassing a broad range of devices that widely differ in function and structural composition. However, one common property amongst biomaterials is the induction of the foreign body response: an acute sterile inflammatory reaction which overlaps with tissue vascularisation and remodelling and ultimately fibrotic encapsulation of the biomaterial to prevent further interaction with host tissue. Severity and clinical manifestation of the biomaterial-induced foreign body response are different for each biomaterial, with cases of incompatibility often associated with loss of function. However, unravelling the mechanisms that progress to the formation of the fibrotic capsule highlights the tightly intertwined nature of immunological responses to a seemingly noncanonical “antigen.” In this review, we detail the pathways associated with the foreign body response and describe possible mechanisms of immune involvement that can be targeted. We also discuss methods of modulating the immune response by altering the physiochemical surface properties of the biomaterial prior to implantation. Developments in these areas are reliant on reproducible and effective animal models and may allow a “combined” immunomodulatory approach of adapting surface properties of biomaterials, as well as treating key immune pathways to ultimately reduce the negative consequences of biomaterial implantation.
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Abstract
Inflammation contributes to the pathogenesis of most acute and chronic liver diseases. Inflammasomes are multiprotein complexes that can sense danger signals from damaged cells and pathogens and assemble to mediate caspase-1 activation, which proteolytically activates the cytokines IL-1β and IL-18. In contrast to other inflammatory responses, inflammasome activation uniquely requires two signals to induce inflammation, therefore setting an increased threshold. IL-1β, generated upon caspase-1 activation, provides positive feed-forward stimulation for inflammatory cytokines, thereby amplifying inflammation. Inflammasome activation has been studied in different human and experimental liver diseases and has been identified as a major contributor to hepatocyte damage, immune cell activation and amplification of liver inflammation. In this Review, we discuss the different types of inflammasomes, their activation and biological functions in the context of liver injury and disease progression. Specifically, we focus on the triggers of inflammasome activation in alcoholic steatohepatitis and NASH, chronic HCV infection, ischaemia-reperfusion injury and paracetamol-induced liver injury. The application and translation of these discoveries into therapies promises novel approaches in the treatment of inflammation in liver disease.
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Affiliation(s)
- Gyongyi Szabo
- Department of Medicine, University of Massachusetts Medical School, LRB 215, 364 Plantation Street, Worcester, MA 01605, USA
| | - Jan Petrasek
- Department of Medicine, University of Massachusetts Medical School, LRB 215, 364 Plantation Street, Worcester, MA 01605, USA
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Abstract
Biliary atresia is a severe cholangiopathy of early infancy that destroys extrahepatic bile ducts and disrupts bile flow. With a poorly defined disease pathogenesis, treatment consists of the surgical removal of duct remnants followed by hepatoportoenterostomy. Although this approach can improve the short-term outcome, the liver disease progresses to end-stage cirrhosis in most children. Further improvement in outcome will require a greater understanding of the mechanisms of biliary injury and fibrosis. Here, we review progress in the field, which has been fuelled by collaborative studies in larger patient cohorts and the development of cell culture and animal model systems to directly test hypotheses. Advances include the identification of phenotypic subgroups and stages of disease based on clinical, pathological and molecular features. Stronger evidence exists for viruses, toxins and gene sequence variations in the aetiology of biliary atresia, triggering a proinflammatory response that injures the duct epithelium and produces a rapidly progressive cholangiopathy. The immune response also activates the expression of type 2 cytokines that promote epithelial cell proliferation and extracellular matrix production by nonparenchymal cells. These advances provide insight into phenotype variability and might be relevant to the design of personalized trials to block progression of liver disease.
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Gao S, Huan SL, Han LY, Li F, Ji XF, Li XY, Fan YC, Wang K. Overexpression of serum sST2 is associated with poor prognosis in acute-on-chronic hepatitis B liver failure. Clin Res Hepatol Gastroenterol 2015; 39:315-23. [PMID: 25481239 DOI: 10.1016/j.clinre.2014.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/08/2014] [Accepted: 10/16/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND OBJECTIVE Interleukin-33 (IL-33) and soluble ST2 (sST2) have been demonstrated to be involved in liver injury. The present study aims to evaluate serum IL-33 and sST2 level in acute-on-chronic hepatitis B liver failure (ACHBLF) and determine their predictive value for prognosis. METHODS Serum IL-33 and sST2 level in patients with ACHBLF, chronic hepatitis B (CHB) and healthy controls (HCs) were determined by enzyme-linked immunosorbent assay (ELISA). Clinical and laboratory parameters were obtained. RESULTS Serum IL-33 was significantly higher in patients with ACHBLF (313.10±419.97pg/ml) than those with CHB (97.25±174.67pg/ml, P<0.01) and HCs (28.39±6.53pg/ml, P<0.01). Serum sST2 was significantly higher in patients with ACHBLF (1545.87±1135.70pg/ml) than those with CHB (152.55±93.28pg/ml, P<0.01) and HCs (149.27±104.90pg/ml, P<0.01). In all participants, serum IL-33 was significantly correlated with sST2 (r=0.43, P<0.01). In patients with ACHBLF, serum IL-33 was significantly correlated with alanine aminotransferase (ALT; r=0.26, P=0.04). Serum sST2 was significantly correlated with total bilirubin (TBIL; r=0.59, P<0.01), Log10 [HBV DNA] (r=-0.47, P<0.01) and model for end-stage liver diseases (MELD; r=0.28, P=0.03). Serum sST2 had an area under the receiver operating characteristic curve (AUC) of 0.81 in predicting 3-month mortality of ACHBLF. Patients with ACHBLF who had sST2 >1507pg/ml showed significantly poorer survival than those who had sST2 ≤1507pg/ml (P<0.01). Moreover, measurement of sST2 and MELD together significantly improved the diagnostic value of MELD alone (P<0.05). CONCLUSIONS Our study showed that serum IL-33 and sST2 were overexpressed in ACHBLF and sST2 might potentially serve as a prognostic marker for it.
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Affiliation(s)
- Shuai Gao
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Shu-Ling Huan
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Li-Yan Han
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China; Institute of Hepatology, Shandong University, Jinan 250012, Shandong, China
| | - Feng Li
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Xiang-Fen Ji
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Xin-You Li
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Yu-Chen Fan
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China; Institute of Hepatology, Shandong University, Jinan 250012, Shandong, China
| | - Kai Wang
- Department of Hepatology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China; Institute of Hepatology, Shandong University, Jinan 250012, Shandong, China.
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Mbarik M, Kaabachi W, Henidi B, Sassi FH, Hamzaoui K. Soluble ST2 and IL-33: Potential markers of endometriosis in the Tunisian population. Immunol Lett 2015; 166:1-5. [PMID: 25977120 DOI: 10.1016/j.imlet.2015.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 05/04/2015] [Indexed: 11/19/2022]
Abstract
Interleukin-33 is an IL-1 family cytokine which signals via its T1/ST2 receptor, and acts as a key regulator of inflammation. This study aims to measure the expression of soluble ST2 (sST2) and IL-33 in endometriosis. We investigated thirty women with laparoscopic and histopathological confirmed endometriosis and 20 control women without pelvic pathology. Peripheral blood mononuclear cells and peritoneal fluid (PF) were assessed for sST2 and IL-33 levels that are measured by sandwich enzyme-linked immunosorbent assay. Peritoneal fluid IL-33 mRNA expression was quantified by real-time reverse transcription polymerase chain reaction assays. We found that IL-33 levels in PF and in serum were significantly higher in patients with endometriosis compared to women without endometriosis (P < 0.05). IL-33 increased levels were significantly more important in PF [10.45 ± 14.33 ng/mL] than in serum [2.68 ± 1.54 ng/mL] from endometriosis patients. Higher levels of IL-33 mRNA expression were detected in PF from patients with endometriosis. Soluble ST2 levels in PF were significantly different between patients [2.96 ± 0.98 ng/mL; P < 0.0001] and controls [0.88 ± 0.076 ng/mL]. Serum sST2 levels were similarly expressed in endometriosis patients and in controls (P > 0.05). Significant correlation was observed between IL-33 and sST2 levels in PF. In conclusion, IL-33 and sST2 values observed in PF were found to correlate with endometriosis severity. Elevated and correlated PF IL-33 and sST2 levels from patients with endometriosis suggested a potential role as surrogate markers of disease activity.
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Affiliation(s)
- Maroua Mbarik
- Tunis El Manar University, Medicine Faculty of Tunis, Department of Immunology and Histology, Tunisia.
| | - Wajih Kaabachi
- Tunis El Manar University, Medicine Faculty of Tunis, Department of Immunology and Histology, Tunisia; A. Mami Hospital, Unit Research UR/12SP15 (Homeostasis and cell immune dysfunction), Ariana, Tunisia.
| | - Balkis Henidi
- Tunis El Manar University, Medicine Faculty of Tunis, Department of Immunology and Histology, Tunisia.
| | - Faycal Haj Sassi
- Tunis El Manar University, Medicine Faculty of Tunis, Department of Immunology and Histology, Tunisia; A. Mami Hospital, Unit Research UR/12SP15 (Homeostasis and cell immune dysfunction), Ariana, Tunisia.
| | - Kamel Hamzaoui
- Tunis El Manar University, Medicine Faculty of Tunis, Department of Immunology and Histology, Tunisia; A. Mami Hospital, Unit Research UR/12SP15 (Homeostasis and cell immune dysfunction), Ariana, Tunisia.
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Yamada D, Rizvi S, Razumilava N, Bronk SF, Davila JI, Champion MD, Borad MJ, Bezerra JA, Chen X, Gores GJ. IL-33 facilitates oncogene-induced cholangiocarcinoma in mice by an interleukin-6-sensitive mechanism. Hepatology 2015; 61:1627-42. [PMID: 25580681 PMCID: PMC4406813 DOI: 10.1002/hep.27687] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 01/05/2015] [Indexed: 12/15/2022]
Abstract
UNLABELLED Cholangiocarcinoma (CCA) is a lethal hepatobiliary neoplasm originating from the biliary apparatus. In humans, CCA risk factors include hepatobiliary inflammation and fibrosis. The recently identified interleukin (IL)-1 family member, IL-33, has been shown to be a biliary mitogen which also promotes liver inflammation and fibrosis. Our aim was to generate a mouse model of CCA mimicking the human disease. Ectopic oncogene expression in the biliary tract was accomplished by the Sleeping Beauty transposon transfection system with transduction of constitutively active AKT (myr-AKT) and Yes-associated protein. Intrabiliary instillation of the transposon-transposase complex was coupled with lobar bile duct ligation in C57BL/6 mice, followed by administration of IL-33 for 3 consecutive days. Tumors developed in 72% of the male mice receiving both oncogenes plus IL-33 by 10 weeks but in only 20% of the male mice transduced with the oncogenes alone. Tumors expressed SOX9 and pancytokeratin (features of CCA) but were negative for HepPar1 (a marker of hepatocellular carcinoma). Substantive overlap with human CCA specimens was revealed by RNA profiling. Not only did IL-33 induce IL-6 expression by human cholangiocytes but it likely facilitated tumor development in vivo by an IL-6-sensitive process as tumor development was significantly attenuated in Il-6(-/-) male animals. Furthermore, tumor formation occurred at a similar rate when IL-6 was substituted for IL-33 in this model. CONCLUSION The transposase-mediated transduction of constitutively active AKT and Yes-associated protein in the biliary epithelium coupled with lobar obstruction and IL-33 administration results in the development of CCA with morphological and biochemical features of the human disease; this model highlights the role of inflammatory cytokines in CCA oncogenesis.
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Affiliation(s)
- Daisaku Yamada
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Sumera Rizvi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | | | - Steven F. Bronk
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Jaime I. Davila
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Mia D. Champion
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona
| | - Mitesh J. Borad
- Division of Hematology/Oncology, Mayo Clinic, Scottsdale, AZ
| | - Jorge A. Bezerra
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Xin Chen
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA
| | - Gregory J. Gores
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
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Gao Q, Li Y, Li M. The potential role of IL-33/ST2 signaling in fibrotic diseases. J Leukoc Biol 2015; 98:15-22. [PMID: 25881899 DOI: 10.1189/jlb.3ru0115-012r] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 03/26/2015] [Indexed: 12/15/2022] Open
Abstract
IL-33, a new member of the IL-1F, is widely expressed throughout the body and can be up-regulated by stimulation with proinflammatory factors. It has been identified as a functional ligand for the plasma membrane receptor complex that is a heterodimer consisting of membrane-bound ST2L, which is a member of the IL-1R family, and IL-1RAcP. IL-33 is crucial for the induction of Th2 immune responses. Additionally, under other circumstances, it can also act as an endogenous danger signal. Recently, many studies have demonstrated that IL-33 may be related to the development and progression of fibrotic diseases. It has proinflammatory effects in some fibrotic diseases but has anti-inflammatory effects in others. In this review, the biologic characteristics of IL-33 and the role of the IL-33/ST2 signaling pathway in various fibrotic diseases will be discussed. We hope this overview will provide new insights for the treatment of these diseases.
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Affiliation(s)
- Qiaoyan Gao
- Department of Immunology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
| | - Yan Li
- Department of Immunology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
| | - Mingcai Li
- Department of Immunology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
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Arshad MI, Piquet-Pellorce C, Filliol A, L'Helgoualc'h A, Lucas-Clerc C, Jouan-Lanhouet S, Dimanche-Boitrel MT, Samson M. The chemical inhibitors of cellular death, PJ34 and Necrostatin-1, down-regulate IL-33 expression in liver. J Mol Med (Berl) 2015; 93:867-78. [PMID: 25747661 DOI: 10.1007/s00109-015-1270-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 02/05/2015] [Accepted: 02/06/2015] [Indexed: 12/13/2022]
Abstract
UNLABELLED Interleukin-33 (IL-33), a cytokine belonging to the IL-1 family, is crucially involved in inflammatory pathologies including liver injury and linked to various modes of cell death. However, a link between IL-33 and necroptosis or programmed necrosis in liver pathology remains elusive. We aimed to investigate the regulation of IL-33 during necroptosis-associated liver injury. The possible regulation of IL-33 during liver injury by receptor-interacting protein kinase 1 (RIPK1) and poly(ADP-ribose) polymerase 1 (PARP-1) was investigated in mice in vivo and in hepatic stellate cells in vitro. The liver immunohistopathology, flow cytometry, serum transaminase measurement, ELISA, and qPCR-based cytokine measurement were carried out. By using a chemical approach, we showed that pretreatment of mice with Necrostatin-1 (Nec-1) (inhibitor of RIPK1) and/or PJ34 (inhibitor of PARP-1) significantly protected mice against concanavalin A (ConA) liver injury (aspartate amino-transferase (AST)/alanine amino-transferase (ALT)) associated with down-regulated hepatocyte-specific IL-33 expression. In contrast, the expression level of most systemic cytokines (except for IL-6) or activation of liver immune cells was not altered by chemical inhibitors rather an increased infiltration of neutrophils in the liver. During polyinosine-polycytidylic acid (Poly(I:C))-induced acute hepatitis, liver injury and hepatocyte-specific IL-33 expression was also inhibited by PJ34 without any protective effect of PJ34 in CCl4-induced liver injury. Moreover, PJ34 down-regulated the protein expression of IL-33 in activated hepatic stellate cells by cocktail of cytokines or staurosporine in vitro. In conclusion, we evidenced that the Nec-1/PJ34 is a potent inhibitor of liver injury and Nec-1/PJ34 down-regulated hepatocyte-specific IL-33 expression in the liver in vivo or in hepatic stellate cells in vitro, suggesting IL-33 as a possible readout of necroptosis-involved liver pathologies. KEY MESSAGE Necroptosis inhibitors can protect mice against liver injury induced by ConA or Poly(I:C). IL-33 expression in liver injury in vivo is inhibited by PJ34. IL-33 expression in hepatic stellate cells in vitro is inhibited by PJ34. Hepatocyte-specific IL-33 expression is down-regulated by Nec-1/PJ34 during hepatitis. IL-33 is a new marker of necroptosis-associated liver injuries.
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Affiliation(s)
- Muhammad Imran Arshad
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement and Travail (IRSET), 35043, Rennes, France
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Abstract
Innate lymphoid cells (ILCs) are involved in the development of mucosal-associated lymphoid tissues and serve as a rapid and early source of the effector cytokines that are typically associated with the T helper cell subsets in response to pathogen-induced changes in the microenvironment. Recent research has implicated ILCs as potential contributing factors to the spectrum of inflammation-related hepatic diseases, particularly hepatitis, fibrosis and carcinoma. In this review, we summarize the current knowledge on the roles of ILCs in these hepatic pathogeneses, providing insights into the underlying cellular and signaling mechanisms to help guide the future research to elucidate the ILCs' characters under normal and diseased conditions and provide interventional targets with therapeutic potential.
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Affiliation(s)
- Shuang Yang
- a Institute of Immunology, PLA , Third Military Medical University , Chongqing , P. R. China
| | - Zhiqiang Tian
- a Institute of Immunology, PLA , Third Military Medical University , Chongqing , P. R. China
| | - Yuzhang Wu
- a Institute of Immunology, PLA , Third Military Medical University , Chongqing , P. R. China
| | | | - Bing Ni
- a Institute of Immunology, PLA , Third Military Medical University , Chongqing , P. R. China
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140
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Crucial and diverse role of the interleukin-33/ST2 axis in infectious diseases. Infect Immun 2015; 83:1738-48. [PMID: 25712928 DOI: 10.1128/iai.02908-14] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Interleukin-33 (IL-33) has now emerged as a cytokine with diverse and pleiotropic functions in various infectious and inflammatory diseases. IL-33 is expressed by epithelial cells, endothelial cells, fibroblasts, and hepatocytes. The target cells of IL-33 are Th2 cells, basophils, dendritic cells, mast cells, macrophages, NKT cells, and nuocytes, newly discovered natural helper cells/innate lymphoid cells bearing the ST2 receptor. IL-33 has dual functions, both as a traditional cytokine and as a nuclear factor that regulates gene transcription. IL-33 functions as an "alarmin" released following cell death, as a biomarker, and as a vaccine adjuvant, with proinflammatory and protective effects during various infections. The exacerbated or protective role of the IL-33/ST2 axis during different infections is dependent upon the organ involved, type of infectious agent, whether the infection is acute or chronic, the invasiveness of the infectious agent, the host immune compartment, and cellular and cytokine microenvironments. In this review, we focus on recent advances in the understanding of the role of the IL-33/ST2 axis in various viral, bacterial, fungal, helminth, and protozoal infectious diseases gained from animal models and studies in human patients. The functional role of IL-33 and ST2 during experimentally induced infections has been summarized by accumulating the data for IL-33- and ST2-deficient mice or for mice exogenously administered IL-33. In summary, exploring the crucial and diverse roles of the IL-33/ST2 axis during infections may help in the development of therapeutic interventions for a wide range of infectious diseases.
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141
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Cui G, Qi H, Gundersen MD, Yang H, Christiansen I, Sørbye SW, Goll R, Florholmen J. Dynamics of the IL-33/ST2 network in the progression of human colorectal adenoma to sporadic colorectal cancer. Cancer Immunol Immunother 2015; 64:181-90. [PMID: 25324197 PMCID: PMC11028541 DOI: 10.1007/s00262-014-1624-x] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 10/06/2014] [Indexed: 12/19/2022]
Abstract
Most sporadic colorectal cancers (CRCs) develop from preformed adenomas. Cytokines are involved in the transition from adenoma to CRC. Interleukin-33 (IL-33) is a newly discovered proinflammatory cytokine belonging to the IL-1 cytokine family and involved in the development of chronic inflammation and cancer. The aim of this study was to evaluate the dynamics of the IL-33/ST2 axis during the sequence of progression from normal colorectum to adenoma to carcinoma and to investigate the association of IL-33 and ST2 expression with clinicopathological parameters and prognosis. The results demonstrated that the levels of IL-33 and ST2 in adenomas (n = 50), determined by real-time PCR, were significantly higher than those of normal controls (n = 30); the levels of both IL-33/ST mRNA in CRCs (n = 50) were higher than in normal controls but lower than in adenomas. Further analysis revealed that the expression level of ST2 in CRCs was associated with tumor/node/metastasis (TNM) stage. The log-rank test showed that neither the IL-33 nor the ST2 expression level was correlated with overall survival in patients with CRC. The increased expression of IL-33/ST2 in adenomas and CRC tissues was confirmed by immunohistochemistry and was observed in both the tumor stromal cells and adenomatous/cancerous cells. Notably, increased densities of IL-33-positive and ST2-positive microvessels were found in the stroma of adenomas and CRCs. In conclusion, increased expression of the IL-33/ST2 axis along the colorectal adenoma-carcinoma sequence might be involved in the neoplastic transformation via the participation of this axis in the regulation of angiogenesis.
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Affiliation(s)
- Guanglin Cui
- Department of Gastroenterology, the Second Affiliated Hospital of Zhengzhou University, 2 Jingba Road, Zhengzhou, 455000, Henan, China,
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142
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Weiskirchen R, Tacke F. Cellular and molecular functions of hepatic stellate cells in inflammatory responses and liver immunology. Hepatobiliary Surg Nutr 2015; 3:344-63. [PMID: 25568859 DOI: 10.3978/j.issn.2304-3881.2014.11.03] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 10/17/2014] [Indexed: 12/11/2022]
Abstract
The liver is a central immunological organ. Liver resident macrophages, Kupffer cells (KC), but also sinusoidal endothelial cells, dendritic cells (DC) and other immune cells are involved in balancing immunity and tolerance against pathogens, commensals or food antigens. Hepatic stellate cells (HSCs) have been primarily characterized as the main effector cells in liver fibrosis, due to their capacity to transdifferentiate into collagen-producing myofibroblasts (MFB). More recent studies elucidated the fundamental role of HSC in liver immunology. HSC are not only the major storage site for dietary vitamin A (Vit A) (retinol, retinoic acid), which is essential for proper function of the immune system. This pericyte further represents a versatile source of many soluble immunological active factors including cytokines [e.g., interleukin 17 (IL-17)] and chemokines [C-C motif chemokine (ligand) 2 (CCL2)], may act as an antigen presenting cell (APC), and has autophagy activity. Additionally, it responds to many immunological triggers via toll-like receptors (TLR) (e.g., TLR4, TLR9) and transduces signals through pathways and mediators traditionally found in immune cells, including the Hedgehog (Hh) pathway or inflammasome activation. Overall, HSC promote rather immune-suppressive responses in homeostasis, like induction of regulatory T cells (Treg), T cell apoptosis (via B7-H1, PDL-1) or inhibition of cytotoxic CD8 T cells. In conditions of liver injury, HSC are important sensors of altered tissue integrity and initiators of innate immune cell activation. Vice versa, several immune cell subtypes interact directly or via soluble mediators with HSC. Such interactions include the mutual activation of HSC (towards MFB) and macrophages or pro-apoptotic signals from natural killer (NK), natural killer T (NKT) and gamma-delta T cells (γδ T-cells) on activated HSC. Current directions of research investigate the immune-modulating functions of HSC in the environment of liver tumors, cellular heterogeneity or interactions promoting HSC deactivation during resolution of liver fibrosis. Understanding the role of HSC as central regulators of liver immunology may lead to novel therapeutic strategies for chronic liver diseases.
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Affiliation(s)
- Ralf Weiskirchen
- 1 Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, 2 Department of Internal Medicine III, RWTH University Hospital Aachen, Aachen, Germany
| | - Frank Tacke
- 1 Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, 2 Department of Internal Medicine III, RWTH University Hospital Aachen, Aachen, Germany
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143
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Colonna M, Fuchs A, Cella M. Innate Lymphoid Cells in Mucosal Homeostasis, Infections, Autoimmune Disorders, and Tumors. Mucosal Immunol 2015. [DOI: 10.1016/b978-0-12-415847-4.00052-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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144
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Lei Z, Mo Z, Zhu J, Pang X, Zheng X, Wu Z, Wang K, Li X, Xie D, Gao Z. Soluble ST2 plasma concentrations predict mortality in HBV-related acute-on-chronic liver failure. Mediators Inflamm 2015; 2015:535938. [PMID: 25892854 PMCID: PMC4393901 DOI: 10.1155/2015/535938] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 12/31/2014] [Indexed: 02/07/2023] Open
Abstract
Hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) is a rapidly progressing and frequently fatal condition. The aim of this study was to determine whether interleukin- (IL-) 33 and soluble ST2 (sST2) were associated with disease severity and mortality in HBV-ACLF. We found that plasma levels of sST2 but not IL-33 were higher in HBV-ACLF patients compared with chronic hepatitis B (CHB) patients and healthy controls. However, plasma levels of IL-33, TNF-α, IFN-γ, and IL-10 did not correlate with sST2 levels. Similarly, immunohistochemistry revealed low IL-33 expression and high ST2 expression in liver sections of patients with HBV-ACLF. Evaluation of dynamic changes of sST2 in HBV-ACLF showed that plasma sST2 levels increased over time in patients who died during the 180-day follow-up but decreased in those who survived. In addition, plasma sST2 level after week 1 correlated with disease severity, as assessed by total bilirubin, prothrombin time, and model for end-stage liver disease score. Results of Kaplan-Meier survival analysis showed that higher sST2 concentration (≥87 ng/mL) at week 3 was associated with poor survival. These findings indicate the potential usefulness of sST2 as a predictor of disease severity and in making treatment decisions for patients with HBV-ACLF.
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Affiliation(s)
- Ziying Lei
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Zhishuo Mo
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Jianyun Zhu
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Xiuqing Pang
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Xingrong Zheng
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Zhebin Wu
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Ke Wang
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
| | - Xinhua Li
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
- *Xinhua Li: and
| | - Dongying Xie
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
- *Dongying Xie:
| | - Zhiliang Gao
- 1Department of Infectious Disease, The Third Affiliated Hospital of Sun-Yet-Sen University, Guangzhou, Guangdong 510630, China
- 2Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, Guangdong 510080, China
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145
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Ellson CD, Dunmore R, Hogaboam CM, Sleeman MA, Murray LA. Danger-associated molecular patterns and danger signals in idiopathic pulmonary fibrosis. Am J Respir Cell Mol Biol 2014; 51:163-8. [PMID: 24749648 DOI: 10.1165/rcmb.2013-0366tr] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The chronic debilitating lung disease, idiopathic pulmonary fibrosis (IPF), is characterized by a progressive decline in lung function, with a median mortality rate of 2-3 years after diagnosis. IPF is a disease of unknown cause and progression, and multiple pathways have been demonstrated to be activated in the lungs of these patients. A recent genome-wide association study of more than 1,000 patients with IPF identified genes linked to host defense, cell-cell adhesion, and DNA repair being altered due to fibrosis (Fingerlin, et al. Nat Genet 2013;45:613-620). Further emerging data suggest that the respiratory system may not be a truly sterile environment, and it exhibits an altered microbiome during fibrotic disease (Molyneaux and Maher. Eur Respir Rev 2013;22:376-381). These altered host defense mechanisms might explain the increased susceptibility of patients with IPF to microbial- and viral-induced exacerbations. Moreover, chronic epithelial injury and apoptosis are key features in IPF, which might be mediated, in part, by both pathogen-associated (PA) and danger-associated molecular patterns (MPs). Emerging data indicate that both PAMPs and danger-associated MPs contribute to apoptosis, but not necessarily in a manner that allows for the removal of dying cells, without further exacerbating inflammation. In contrast, both types of MPs drive cellular necrosis, leading to an exacerbation of lung injury and/or infection as the debris promotes a proinflammatory response. Thus, this Review focuses on the impact of MPs resulting from infection-driven apoptosis and necrosis during chronic fibrotic lung disease.
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146
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Ishikawa K, Yagi-Nakanishi S, Nakanishi Y, Kondo S, Tsuji A, Endo K, Wakisaka N, Murono S, Yoshizaki T. Expression of interleukin-33 is correlated with poor prognosis of patients with squamous cell carcinoma of the tongue. Auris Nasus Larynx 2014; 41:552-7. [PMID: 25193287 DOI: 10.1016/j.anl.2014.08.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 08/11/2014] [Accepted: 08/13/2014] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The aim of this study was to clarify the role of IL-33 in tumor progression. METHODS Surgical specimens from 81 patients with squamous cell carcinoma of the tongue were studied using immunohistochemistry. Primary tumor sections were analyzed for IL-33 and ST2 expression. To examine the influence of IL-33 on the microenvironment of the tumor, we determined the mast cell density (MCD) and microvessel density of the stroma. RESULTS Patients with high IL-33 expression had a significantly worse prognosis (p=0.004). IL-33 expression was significantly elevated in patients with local and nodal recurrence (p=0.014 and p=0.019). ST2 expression was also associated with a worse prognosis (p=0.024) and was significantly elevated in patients with nodal recurrence (p=0.004). MCD was associated with worse prognosis (p=0.038) and correlated significantly with IL-33 expression (r=0.626, p<0.001). Micovessels in the stroma were significantly increased in the high IL-33 group (p<0.001). CONCLUSION These data suggest that the IL-33/ST2 axis contributes to tumor aggressiveness and affects the tumor microenvironment. Immunohistochemical evaluation of IL-33 and ST2 is useful for identifying patients at a high risk for poor prognosis.
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Affiliation(s)
- Kazuya Ishikawa
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Sayaka Yagi-Nakanishi
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Yosuke Nakanishi
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Satoru Kondo
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Akira Tsuji
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Kazuhira Endo
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Naohiro Wakisaka
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Shigeyuki Murono
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan
| | - Tomokazu Yoshizaki
- Division of Otolaryngology, and Head & Neck Surgery, Graduate School of Medical Science, Kanazawa University, Takara-machi 13-1, Kanazawa, Ishikawa 920-8640, Japan.
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147
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Hammerich L, Tacke F. Interleukins in chronic liver disease: lessons learned from experimental mouse models. Clin Exp Gastroenterol 2014; 7:297-306. [PMID: 25214799 PMCID: PMC4158890 DOI: 10.2147/ceg.s43737] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Interleukins represent a class of immunomodulatory cytokines, small intercellular signaling proteins, that are critically involved in the regulation of immune responses. They are produced in large amounts by various cell types during inflammatory reactions, and the balance of cytokines determines the outcome of an immune response. Therefore, cytokines are regarded as interesting therapeutic targets for the treatment of patients with liver diseases. Mouse models provide a good tool for in vivo studies on cytokine function, as human and mouse cytokines share many homologies. Sophisticated mouse models either mimicking distinct pathological conditions or targeting cytokines and cytokine-signaling pathways in the liver or even in distinct cellular compartments have provided enormous insight into the different functions of interleukins during hepatic inflammation. Interleukins may have pro- as well as anti-inflammatory functions in chronic liver diseases, some interleukins even both, dependent on the inflammatory stimulus, the producing and the responding cell type. IL-17, for example, promotes hepatic fibrogenesis through activation of hepatic stellate cells and facilitates development of liver cancer through recruitment of myeloid-derived suppressor cells. IL-22, on the other hand, protects from development of fibrosis or steatohepatitis. IL-12 balances T-helper (Th)-1 and Th2 cell responses in infectious disease models. IL-13 and IL-33, two cytokines related to Th2 cells and innate lymphoid cells, promote fibrotic responses in the liver. IL-10 is the prototypic anti-inflammatory interleukin with tissue-protective functions during chronic liver injury and fibrogenesis. Despite its critical role for inducing the acute-phase response in the liver, IL-6 signaling is protective during fibrosis progression, but promotes hepatocellular carcinoma. Experimental studies in mice help to define the exact influence of a specific cytokine on the outcome of chronic liver diseases and to identify useful therapeutic targets.
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Affiliation(s)
- Linda Hammerich
- Department of Medicine III, University Hospital Aachen, Aachen, Germany
| | - Frank Tacke
- Department of Medicine III, University Hospital Aachen, Aachen, Germany
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148
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Zhou WC, Zhang QB, Qiao L. Pathogenesis of liver cirrhosis. World J Gastroenterol 2014; 20:7312-7324. [PMID: 24966602 PMCID: PMC4064077 DOI: 10.3748/wjg.v20.i23.7312] [Citation(s) in RCA: 350] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 03/16/2014] [Accepted: 04/29/2014] [Indexed: 02/06/2023] Open
Abstract
Liver cirrhosis is the final pathological result of various chronic liver diseases, and fibrosis is the precursor of cirrhosis. Many types of cells, cytokines and miRNAs are involved in the initiation and progression of liver fibrosis and cirrhosis. Activation of hepatic stellate cells (HSCs) is a pivotal event in fibrosis. Defenestration and capillarization of liver sinusoidal endothelial cells are major contributing factors to hepatic dysfunction in liver cirrhosis. Activated Kupffer cells destroy hepatocytes and stimulate the activation of HSCs. Repeated cycles of apoptosis and regeneration of hepatocytes contribute to pathogenesis of cirrhosis. At the molecular level, many cytokines are involved in mediation of signaling pathways that regulate activation of HSCs and fibrogenesis. Recently, miRNAs as a post-transcriptional regulator have been found to play a key role in fibrosis and cirrhosis. Robust animal models of liver fibrosis and cirrhosis, as well as the recently identified critical cellular and molecular factors involved in the development of liver fibrosis and cirrhosis will facilitate the development of more effective therapeutic approaches for these conditions.
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149
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Amiot L, Vu N, Samson M. Immunomodulatory properties of HLA-G in infectious diseases. J Immunol Res 2014; 2014:298569. [PMID: 24839609 PMCID: PMC4009271 DOI: 10.1155/2014/298569] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/09/2014] [Accepted: 03/10/2014] [Indexed: 12/04/2022] Open
Abstract
HLA-G is a nonclassical major histocompatibility complex molecule first described at the maternal-fetal interface, on extravillous cytotrophoblasts. Its expression is restricted to some tissues in normal conditions but increases strongly in pathological conditions. The expression of this molecule has been studied in detail in cancers and is now also beginning to be described in infectious diseases. The relevance of studies on HLA-G expression lies in the well known inhibitory effect of this molecule on all cell types involved in innate and adaptive immunity, favoring escape from immune control. In this review, we summarize the features of HLA-G expression by type of infections (i.e, bacterial, viral, or parasitic) detailing the state of knowledge for each pathogenic agent. The polymorphism, the interference of viral proteins with HLA-G intracellular trafficking, and various cytokines have been described to modulate HLA-G expression during infections. We also discuss the cellular source of HLA-G, according to the type of infection and the potential role of HLA-G. New therapeutic approaches based on synthetic HLA-G-derived proteins or antibodies are emerging in mouse models of cancer or transplantation, and these new therapeutic tools may eventually prove useful for the treatment of infectious diseases.
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Affiliation(s)
- Laurence Amiot
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche sur la Santé, l'Environnement, et le Travail (IRSET), 2 Avenue du Pr. Leon Bernard CS 34317, 35043 Rennes, France
- Université de Rennes 1, 35043 Rennes, France
- Fédération de Recherche BioSit de Rennes UMS 3480, 35043 Rennes, France
- Department of Biology, University Hospital Pontchaillou, CHU Pontchaillou, 35033 Rennes, France
| | - Nicolas Vu
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche sur la Santé, l'Environnement, et le Travail (IRSET), 2 Avenue du Pr. Leon Bernard CS 34317, 35043 Rennes, France
- Université de Rennes 1, 35043 Rennes, France
- Fédération de Recherche BioSit de Rennes UMS 3480, 35043 Rennes, France
| | - Michel Samson
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche sur la Santé, l'Environnement, et le Travail (IRSET), 2 Avenue du Pr. Leon Bernard CS 34317, 35043 Rennes, France
- Université de Rennes 1, 35043 Rennes, France
- Fédération de Recherche BioSit de Rennes UMS 3480, 35043 Rennes, France
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150
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Yu SL, Wong CK, Tam LS. The alarmin functions of high-mobility group box-1 and IL-33 in the pathogenesis of systemic lupus erythematosus. Expert Rev Clin Immunol 2014; 9:739-49. [PMID: 23971752 DOI: 10.1586/1744666x.2013.814428] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
'Alarmins' are a group of endogenous proteins or molecules that are released from cells during cellular demise to alert the host innate immune system. Two of them, high-mobility group box-1 (HMGB1) and IL-33 shared many similarities of cellular localization, functions and involvement in various inflammatory diseases including systemic lupus erythematosus (SLE). The expressions of HMGB1 and IL-33, and their corresponding receptors RAGE (receptor for advanced glycation end products) and ST2, respectively, are substantially upregulated in patients with lupus nephritis (LN). This review highlights the emerging roles of alarmin proteins in various pathologies of LN, by focusing on classical HMGB1 and a newly discovered alarmin IL-33.
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Affiliation(s)
- Shui-Lian Yu
- Department of Rheumatology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
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