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Chen Y, Song Y, Wang Z, Lai Y, Yin W, Cai Q, Han M, Cai Y, Xue Y, Chen Z, Li X, Chen J, Li M, Li H, He R. The chemerin-CMKLR1 axis in keratinocytes impairs innate host defense against cutaneous Staphylococcus aureus infection. Cell Mol Immunol 2024; 21:533-545. [PMID: 38532043 PMCID: PMC11143357 DOI: 10.1038/s41423-024-01152-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 03/01/2024] [Indexed: 03/28/2024] Open
Abstract
The skin is the most common site of Staphylococcus aureus infection, which can lead to various diseases, including invasive and life-threatening infections, through evasion of host defense. However, little is known about the host factors that facilitate the innate immune evasion of S. aureus in the skin. Chemerin, which is abundantly expressed in the skin and can be activated by proteases derived from S. aureus, has both direct bacteria-killing activity and immunomodulatory effects via interactions with its receptor CMKLR1. Here, we demonstrate that a lack of the chemerin/CMKLR1 axis increases the neutrophil-mediated host defense against S. aureus in a mouse model of cutaneous infection, whereas chemerin overexpression, which mimics high levels of chemerin in obese individuals, exacerbates S. aureus cutaneous infection. Mechanistically, we identified keratinocytes that express CMKLR1 as the main target of chemerin to suppress S. aureus-induced IL-33 expression, leading to impaired skin neutrophilia and bacterial clearance. CMKLR1 signaling specifically inhibits IL-33 expression induced by cell wall components but not secreted proteins of S. aureus by inhibiting Akt activation in mouse keratinocytes. Thus, our study revealed that the immunomodulatory effect of the chemerin/CMKLR1 axis mediates innate immune evasion of S. aureus in vivo and likely increases susceptibility to S. aureus infection in obese individuals.
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Affiliation(s)
- Yu Chen
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Yan Song
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Zhe Wang
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Yangfan Lai
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Wei Yin
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Qian Cai
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Miaomiao Han
- Allergy Center, Department of Otolaryngology, Affiliated Eye and ENT Hospital, Fudan University, Shanghai, 200031, China
| | - Yiheng Cai
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Yushan Xue
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China
| | - Zhengrong Chen
- Department of Respiratory Diseases, Children's Hospital of Soochow University, Suzhou, China
| | - Xi Li
- Biology Science Institutes, Chongqing Medical University, Chongqing, 400032, China
| | - Jing Chen
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
- Department of Nephrology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Min Li
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Faculty of Medical Laboratory Science, Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China
| | - Huabin Li
- Allergy Center, Department of Otolaryngology, Affiliated Eye and ENT Hospital, Fudan University, Shanghai, 200031, China.
| | - Rui He
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE/NHC), School of Basic Medical Sciences, and Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, 200032, China.
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China.
- Research Center of Allergy and Diseases, Fudan University, 200040, Shanghai, China.
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Ramoni D, Tirandi A, Montecucco F, Liberale L. Sepsis in elderly patients: the role of neutrophils in pathophysiology and therapy. Intern Emerg Med 2024; 19:901-917. [PMID: 38294676 PMCID: PMC11186952 DOI: 10.1007/s11739-023-03515-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/17/2023] [Indexed: 02/01/2024]
Abstract
Sepsis is among the most important causes of mortality, particularly within the elderly population. Sepsis prevalence is on the rise due to different factors, including increasing average population age and the concomitant rise in the prevalence of frailty and chronic morbidities. Recent investigations have unveiled a "trimodal" trajectory for sepsis-related mortality, with the ultimate zenith occurring from 60 to 90 days until several years after the original insult. This prolonged temporal course ostensibly emanates from the sustained perturbation of immune responses, persevering beyond the phase of clinical convalescence. This phenomenon is particularly associated with the aging immune system, characterized by a broad dysregulation commonly known as "inflammaging." Inflammaging associates with a chronic low-grade activation of the innate immune system preventing an appropriate response to infective agents. Notably, during the initial phases of sepsis, neutrophils-essential in combating pathogens-may exhibit compromised activity. Paradoxically, an overly zealous neutrophilic reaction has been observed to underlie multi-organ dysfunction during the later stages of sepsis. Given this scenario, discovering treatments that can enhance neutrophil activity during the early phases of sepsis while curbing their overactivity in the later phases could prove beneficial in fighting pathogens and reducing the detrimental effects caused by an overactive immune system. This narrative review delves into the potential key role of neutrophils in the pathological process of sepsis, focusing on how the aging process impacts their functions, and highlighting possible targets for developing immune-modulatory therapies. Additionally, the review includes tables that outline the principal potential targets for immunomodulating agents.
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Affiliation(s)
- Davide Ramoni
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Amedeo Tirandi
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy.
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy.
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Cook DP, Thomas CM, Wu AY, Rusznak M, Zhang J, Zhou W, Cephus JY, Gibson-Corley KN, Polosukhin VV, Norlander AE, Newcomb DC, Stoltz DA, Peebles RS. Cystic Fibrosis Reprograms Airway Epithelial IL-33 Release and Licenses IL-33-Dependent Inflammation. Am J Respir Crit Care Med 2023; 207:1486-1497. [PMID: 36952660 PMCID: PMC10263140 DOI: 10.1164/rccm.202211-2096oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/23/2023] [Indexed: 03/25/2023] Open
Abstract
Rationale: Type 2 inflammation has been described in people with cystic fibrosis (CF). Whether loss of CFTR (cystic fibrosis transmembrane conductance regulator) function contributes directly to a type 2 inflammatory response has not been fully defined. Objectives: The potent alarmin IL-33 has emerged as a critical regulator of type 2 inflammation. We tested the hypothesis that CFTR deficiency increases IL-33 expression and/or release and deletion of IL-33 reduces allergen-induced inflammation in the CF lung. Methods: Human airway epithelial cells (AECs) grown from non-CF and CF cell lines and Cftr+/+ and Cftr-/- mice were used in this study. Pulmonary inflammation in Cftr+/+ and Cftr-/- mice with and without IL-33 or ST2 (IL-1 receptor-like 1) germline deletion was determined by histological analysis, BAL, and cytokine analysis. Measurements and Main Results: After allergen challenge, both CF human AECs and Cftr-/- mice had increased IL-33 expression compared with control AECs and Cftr+/+ mice, respectively. DUOX1 (dual oxidase 1) expression was increased in CF human AECs and Cftr-/- mouse lungs compared with control AECs and lungs from Cftr+/+ mice and was necessary for the increased IL-33 release in Cftr-/- mice compared with Cftr+/+ mice. IL-33 stimulation of Cftr-/- CD4+ T cells resulted in increased type 2 cytokine production compared with Cftr+/+ CD4+ T cells. Deletion of IL-33 or ST2 decreased both type 2 inflammation and neutrophil recruitment in Cftr-/- mice compared with Cftr+/+ mice. Conclusions: Absence of CFTR reprograms airway epithelial IL-33 release and licenses IL-33-dependent inflammation. Modulation of the IL-33/ST2 axis represents a novel therapeutic target in CF type 2-high and neutrophilic inflammation.
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Affiliation(s)
| | | | | | | | | | | | | | - Katherine N. Gibson-Corley
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | | | | | - Dawn C. Newcomb
- Department of Internal Medicine and
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - David A. Stoltz
- Department of Internal Medicine and
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa; and
| | - R. Stokes Peebles
- Department of Internal Medicine and
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
- Tennessee Valley Healthcare System, U.S. Department of Veterans Affairs, Nashville, Tennessee
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Wang Z, Ma Q, Jiang J, Yang X, Zhang E, Tao Y, Hu H, Huang M, Ji N, Zhang M. A comparative study of IL-33 and its receptor ST2 in a C57BL/6 J mouse model of pulmonary Cryptococcus neoformans infection. Med Microbiol Immunol 2023; 212:53-63. [PMID: 36367554 DOI: 10.1007/s00430-022-00755-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 11/01/2022] [Indexed: 11/13/2022]
Abstract
It has been reported that IL-33 receptor ST2 deficiency mitigates Cryptococcus neoformans (C. neoformans) pulmonary infection in BALB/c mice. IL-33 may modulate immune responses in ST2-dependent and ST2-independent manners. The host genetic background (i.e., BALB/c, C57BL/6 J) influences immune responses against C. neoformans. In the present study, we aimed to explore the roles of IL-33 and ST2 in pulmonary C. neoformans-infected mice on a C57BL/6 J genetic background. C. neoformans infection increased IL-33 expression in lung tissues. IL-33 deficiency but not ST2 deficiency significantly extended the survival time of C. neoformans-infected mice. In contrast, either IL-33 or ST2 deficiency reduced fungal burdens in lung, spleen and brain tissues from the mice following C. neoformans intratracheal inoculation. Similarly, inflammatory responses in the lung tissues were more pronounced in both the IL-33-/- and ST2-/- infected mice. However, mucus production was decreased in IL-33-/- infected mice alone, and the level of IL-5 in bronchoalveolar lavage fluid (BALF) was substantially decreased in the IL-33-/- infected mice but not ST2-/- infected mice. Moreover, IL-33 deficiency but not ST2 deficiency increased iNOS-positive macrophages. At the early stage of infection, the reduced pulmonary fungal burden in the IL-33-/- and ST2-/- mice was accompanied by increased neutrophil infiltration. Collectively, IL-33 regulated pulmonary C. neoformans infection in an ST2-dependent and ST2-independent manner in C57BL/6 J mice.
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Affiliation(s)
- Zhengxia Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Qiyun Ma
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.,Department of Respiratory and Critical Care Medicine, The Affiliated Huaian NO.1 People's Hospital of Nanjing Medical University, Huaian, 223300, China
| | - Jingxian Jiang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Xiaofan Yang
- The Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Enrui Zhang
- NHC Key Laboratory of Antibody Technique, Jiangsu Province Engineering Research Center of Antibody Drug, Jiangsu Key Laboratory of Pathogen Biology, Department of Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Yuan Tao
- NHC Key Laboratory of Antibody Technique, Jiangsu Province Engineering Research Center of Antibody Drug, Jiangsu Key Laboratory of Pathogen Biology, Department of Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Huidi Hu
- Department of Pathology, Nanjing Chest Hospital, Nanjing, 210029, China
| | - Mao Huang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Ningfei Ji
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Mingshun Zhang
- NHC Key Laboratory of Antibody Technique, Jiangsu Province Engineering Research Center of Antibody Drug, Jiangsu Key Laboratory of Pathogen Biology, Department of Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
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5
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Dong Q, Tian J, Zheng W, Fan Q, Wu X, Tang Y, Liu T, Yin H. Interleukin-33 protects mice against hindlimb ischemic injury by enhancing endothelial angiogenesis. Int Immunopharmacol 2022; 109:108850. [DOI: 10.1016/j.intimp.2022.108850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/30/2022] [Accepted: 05/09/2022] [Indexed: 12/15/2022]
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Yi XM, Lian H, Li S. Signaling and functions of interleukin-33 in immune regulation and diseases. CELL INSIGHT 2022; 1:100042. [PMID: 37192860 PMCID: PMC10120307 DOI: 10.1016/j.cellin.2022.100042] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/31/2022] [Accepted: 06/03/2022] [Indexed: 05/18/2023]
Abstract
Interleukin-33 (IL-33) which belongs to the interleukin-1 (IL-1) family is an alarmin cytokine with critical roles in tissue homeostasis, pathogenic infection, inflammation, allergy and type 2 immunity. IL-33 transmits signals through its receptor IL-33R (also called ST2) which is expressed on the surface of T helper 2 (Th2) cells and group 2 innate lymphoid cells (ILC2s), thus inducing transcription of Th2-associated cytokine genes and host defense against pathogens. Moreover, the IL-33/IL-33R axis is also involved in development of multiple types of immune-related diseases. In this review, we focus on current progress on IL-33-trigggered signaling events, the important functions of IL-33/IL-33R axis in health and diseases as well as the promising therapeutic implications of these findings.
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Affiliation(s)
- Xue-Mei Yi
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Huan Lian
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, 06536, USA
| | - Shu Li
- Department of Infectious Diseases, Zhongnan Hospital of Wuhan University, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Research Unit of Innate Immune and Inflammatory Diseases, Chinese Academy of Medical Sciences, Wuhan University, Wuhan, 430071, China
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Schmidt V, Hogan AE, Fallon PG, Schwartz C. Obesity-Mediated Immune Modulation: One Step Forward, (Th)2 Steps Back. Front Immunol 2022; 13:932893. [PMID: 35844529 PMCID: PMC9279727 DOI: 10.3389/fimmu.2022.932893] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 05/27/2022] [Indexed: 11/15/2022] Open
Abstract
Over the past decades, the relationship between the immune system and metabolism has become a major research focus. In this arena of immunometabolism the capacity of adipose tissue to secrete immunomodulatory molecules, including adipokines, within the underlying low-grade inflammation during obesity brought attention to the impact obesity has on the immune system. Adipokines, such as leptin and adiponectin, influence T cell differentiation into different T helper subsets and their activation during immune responses. Furthermore, within the cellular milieu of adipose tissue nutrient availability regulates differentiation and activation of T cells and changes in cellular metabolic pathways. Upon activation, T cells shift from oxidative phosphorylation to oxidative glycolysis, while the differential signaling of the kinase mammalian target of rapamycin (mTOR) and the nuclear receptor PPARγ, amongst others, drive the subsequent T cell differentiation. While the mechanisms leading to a shift from the typical type 2-dominated milieu in lean people to a Th1-biased pro-inflammatory environment during obesity are the subject of extensive research, insights on its impact on peripheral Th2-dominated immune responses become more evident. In this review, we will summarize recent findings of how Th2 cells are metabolically regulated during obesity and malnutrition, and how these states affect local and systemic Th2-biased immune responses.
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Affiliation(s)
- Viviane Schmidt
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Andrew E. Hogan
- Kathleen Lonsdale Human Health Institute, Maynooth University, Maynooth, Ireland
- Obesity Immunology Research, St. Vincent’s University Hospital and University College Dublin, Dublin, Ireland
| | - Padraic G. Fallon
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Christian Schwartz
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- *Correspondence: Christian Schwartz,
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8
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Hammer F, Genser B, Dieplinger B, Egger M, Müller T, Drechsler C, März W, Störk S, Wanner C, Krane V. Soluble suppression of tumorigenesis-2 (sST2) is a strong predictor of all-cause, cardiovascular and infection-related mortality risk in hemodialysis patients with diabetes mellitus. Clin Kidney J 2022; 15:1915-1923. [PMID: 36158148 PMCID: PMC9494540 DOI: 10.1093/ckj/sfac142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Indexed: 11/13/2022] Open
Abstract
Background Soluble suppression of tumorigenesis-2 (sST2) is a strong prognostic biomarker of cardiovascular (CV) disease. End-stage kidney disease (ESKD) patients are at high risk of CV events and infections. Herein we investigated the utility of sST2 to predict all-cause and cause-specific mortality in haemodialysis (HD) patients with diabetes mellitus. Methods sST2 concentrations were measured in plasma samples of 1196 participants of the German Diabetes and Dialysis (4D) study who had type 2 diabetes mellitus and received maintenance HD for ESKD. Hazard ratios (HRs) for prespecified, adjudicated endpoints were determined according to sST2 levels at baseline by multivariate Cox proportional hazards analysis. Results Participants (mean age 66 years, 54% male) had a median sST2 concentration of 25 ng/mL and were followed up for 4 years. After adjustment for possible confounders, participants with sST2 concentrations in the highest (>32.6 ng/mL) compared with the lowest (<20.1 ng/mL) quartile exhibited a 2-fold higher all-cause mortality risk {[HR 2.06 95% confidence interval (CI) 1.61–2.61]; P < .001}. High sST concentrations (fourth versus first quartile) were strongly associated with the risk of cardiac death [HR 2.29 (95% CI 1.55–3.39); P < .001]. Analysis of individual components of cardiac causes of death showed an increased risk of sudden death [HR 2.24 (95% CI 1.33–3.77); P < .001], death due to myocardial infarction [HR 2.12 (95% CI 0.9–5.0); P = .087] and heart failure [HR 3.34 (95% CI 1.15–9.75); P = .027] in participants with sST2 levels in the highest compared with the lowest quartile. Likewise, participants with the highest sST2 levels had an increased risk of fatal stroke [HR 1.92 (95% CI 1.17–3.14); P = .009] and fatal infections [HR 2.01 (95% CI 1.2–3.37); P = .008]. In contrast to fatal CV events, sST2 was not associated with the risk of non-fatal myocardial infarction [HR 0.68 (95% CI 0.41–1.12); P = .132] or non-fatal stroke [HR 1.28 (95% CI 0.64–2.53); P = .485]. Conclusions In HD patients with diabetes mellitus, high concentrations of sST2 were strongly and independently associated with an increased risk of all-cause mortality, CV mortality and death due to infection but not non-fatal CV events.
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Affiliation(s)
- Fabian Hammer
- Department of Internal Medicine B, Division of Cardiology, University Medicine Greifswald, Greifswald, Germany
- Department of Internal Medicine I, Division of Cardiology, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Bernd Genser
- Center for Preventive Medicine and Digital Health Baden-Württemberg (CPD-BW), Medical Faculty Mannheim, Heidelberg University
- BGStats Consulting, Vienna, Austria
| | - Benjamin Dieplinger
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz and Ordensklinikum Linz Barmherzige Schwestern, Linz, Austria
| | - Margot Egger
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz and Ordensklinikum Linz Barmherzige Schwestern, Linz, Austria
| | - Thomas Müller
- Department of Laboratory Diagnostics, Hospital of Gmunden, Austria
| | - Christiane Drechsler
- Department of Medicine I, Division of Nephrology, University Hospital Würzburg, Würzburg, Germany
| | - Winfried März
- Synlab Akademie für ärztliche Fortbildung, Synlab Services GmbH, Mannheim, Germany
| | - Stefan Störk
- Department of Internal Medicine I, Division of Cardiology, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
| | - Christoph Wanner
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
- Department of Medicine I, Division of Nephrology, University Hospital Würzburg, Würzburg, Germany
| | - Vera Krane
- Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Germany
- Department of Medicine I, Division of Nephrology, University Hospital Würzburg, Würzburg, Germany
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9
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Dragan M, Sun P, Chen Z, Ma X, Vu R, Shi Y, Villalta SA, Dai X. Epidermis-Intrinsic Transcription Factor Ovol1 Coordinately Regulates Barrier Maintenance and Neutrophil Accumulation in Psoriasis-Like Inflammation. J Invest Dermatol 2022; 142:583-593.e5. [PMID: 34461129 PMCID: PMC9968377 DOI: 10.1016/j.jid.2021.08.397] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/22/2021] [Accepted: 08/13/2021] [Indexed: 12/30/2022]
Abstract
Skin epidermis constitutes the exterior barrier that protects the body from dehydration and environmental assaults. Barrier defects underlie common inflammatory skin diseases, but the molecular mechanisms that maintain barrier integrity and regulate epidermal-immune cell cross-talk in inflamed skin are not fully understood. In this study, we show that skin epithelia-specific deletion of Ovol1, which encodes a skin disease‒linked transcriptional repressor, impairs the epidermal barrier and aggravates psoriasis-like skin inflammation in mice in part by enhancing neutrophil accumulation and abscess formation. Through molecular studies, we identify IL-33, a cytokine with known pro-inflammatory and anti-inflammatory activities, and Cxcl1, a neutrophil-attracting chemokine, as potential weak and strong direct targets of Ovol1, respectively. Furthermore, we provide functional evidence that elevated Il33 expression reduces disease severity in imiquimod-treated Ovol1-deficient mice, whereas persistent accumulation and epidermal migration of neutrophils exacerbate it. Collectively, our study uncovers the importance of an epidermally expressed transcription factor that regulates both the integrity of the epidermal barrier and the behavior of neutrophils in psoriasis-like inflammation.
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Affiliation(s)
- Morgan Dragan
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA,NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California, USA,Institute for Immunology, University of California, Irvine, Irvine, California, USA,These authors contributed equally to this work
| | - Peng Sun
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA,These authors contributed equally to this work
| | - Zeyu Chen
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA,Department of Dermatology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China,Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China
| | - Xianghui Ma
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA
| | - Remy Vu
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA,NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California, USA
| | - Yuling Shi
- Institute of Psoriasis, School of Medicine, Tongji University, Shanghai, China,Department of Dermatology, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - S. Armando Villalta
- Institute for Immunology, University of California, Irvine, Irvine, California, USA,Department of Physiology & Biophysics, School of Medicine, University of California, Irvine, Irvine, California, USA
| | - Xing Dai
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, California, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California, USA; Institute for Immunology, University of California, Irvine, Irvine, California, USA.
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10
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Could Interleukin-33 (IL-33) Govern the Outcome of an Equine Influenza Virus Infection? Learning from Other Species. Viruses 2021; 13:v13122519. [PMID: 34960788 PMCID: PMC8704309 DOI: 10.3390/v13122519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/04/2021] [Accepted: 12/13/2021] [Indexed: 11/16/2022] Open
Abstract
Influenza A viruses (IAVs) are important respiratory pathogens of horses and humans. Infected individuals develop typical respiratory disorders associated with the death of airway epithelial cells (AECs) in infected areas. Virulence and risk of secondary bacterial infections vary among IAV strains. The IAV non-structural proteins, NS1, PB1-F2, and PA-X are important virulence factors controlling AEC death and host immune responses to viral and bacterial infection. Polymorphism in these proteins impacts their function. Evidence from human and mouse studies indicates that upon IAV infection, the manner of AEC death impacts disease severity. Indeed, while apoptosis is considered anti-inflammatory, necrosis is thought to cause pulmonary damage with the release of damage-associated molecular patterns (DAMPs), such as interleukin-33 (IL-33). IL-33 is a potent inflammatory mediator released by necrotic cells, playing a crucial role in anti-viral and anti-bacterial immunity. Here, we discuss studies in human and murine models which investigate how viral determinants and host immune responses control AEC death and subsequent lung IL-33 release, impacting IAV disease severity. Confirming such data in horses and improving our understanding of early immunologic responses initiated by AEC death during IAV infection will better inform the development of novel therapeutic or vaccine strategies designed to protect life-long lung health in horses and humans, following a One Health approach.
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11
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Chuah JJM, Hertzog PJ, Campbell NK. Immunoregulation by type I interferons in the peritoneal cavity. J Leukoc Biol 2021; 111:337-353. [PMID: 34612523 DOI: 10.1002/jlb.3mr0821-147r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The peritoneal cavity, a fluid-containing potential space surrounding the abdominal and pelvic organs, is home to a rich network of immune cells that maintain tissue homeostasis and provide protection against infection. However, under pathological conditions such as peritonitis, endometriosis, and peritoneal carcinomatosis, the peritoneal immune system can become dysregulated, resulting in nonresolving inflammation and disease progression. An enhanced understanding of the factors that regulate peritoneal immune cells under both homeostatic conditions and in disease contexts is therefore required to identify new treatment strategies for these often life-limiting peritoneal pathologies. Type I interferons (T1IFNs) are a family of cytokines with broad immunoregulatory functions, which provide defense against viruses, bacteria, and cancer. There have been numerous reports of immunoregulation by T1IFNs within the peritoneal cavity, which can contribute to both the resolution or propagation of peritoneal disease states, depending on the specifics of the disease setting and local environment. In this review, we provide an overview of the major immune cell populations that reside in the peritoneal cavity (or infiltrate it under inflammatory conditions) and highlight their contribution to the initiation, progression, or resolution of peritoneal diseases. Additionally, we will discuss the role of T1IFNs in the regulation of peritoneal immune cells, and summarize the results of laboratory studies and clinical trials which have investigated T1IFNs in peritonitis/sepsis, endometriosis, and peritoneal carcinomatosis.
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Affiliation(s)
- Jasmine J M Chuah
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia
| | - Paul J Hertzog
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| | - Nicole K Campbell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
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12
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Warren KJ, Poole JA, Sweeter JM, DeVasure JM, Dickinson JD, Peebles RS, Wyatt TA. Neutralization of IL-33 modifies the type 2 and type 3 inflammatory signature of viral induced asthma exacerbation. Respir Res 2021; 22:206. [PMID: 34266437 PMCID: PMC8281667 DOI: 10.1186/s12931-021-01799-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/08/2021] [Indexed: 12/14/2022] Open
Abstract
Background Respiratory viral infections are one of the leading causes of need for emergency care and hospitalizations in asthmatic individuals, and airway-secreted cytokines are released within hours of viral infection to initiate these exacerbations. IL-33, specifically, contributes to these allergic exacerbations by amplifying type 2 inflammation. We hypothesized that blocking IL-33 in RSV-induced exacerbation would significantly reduce allergic inflammation. Methods Sensitized BALB/c mice were challenged with aerosolized ovalbumin (OVA) to establish allergic inflammation, followed by RSV-A2 infection to yield four treatment groups: saline only (Saline), RSV-infected alone (RSV), OVA alone (OVA), and OVA-treated with RSV infection (OVA-RSV). Lung outcomes included lung mRNA and protein markers of allergic inflammation, histology for mucus cell metaplasia and lung immune cell influx by cytospin and flow cytometry. Results While thymic stromal lymphopoietin (TSLP) and IL-33 were detected 6 h after RSV infection in the OVA-RSV mice, IL-23 protein was uniquely upregulated in RSV-infected mice alone. OVA-RSV animals varied from RSV- or OVA-treated mice as they had increased lung eosinophils, neutrophils, group 2 innate lymphoid cells (ILC2) and group 3 innate lymphoid cells (ILC3) detectable as early as 6 h after RSV infection. Neutralized IL-33 significantly reduced ILC2 and eosinophils, and the prototypical allergic proteins, IL-5, IL-13, CCL17 and CCL22 in OVA-RSV mice. Numbers of neutrophils and ILC3 were also reduced with anti-IL-33 treatment in both RSV and OVA-RSV treated animals as well. Conclusions Taken together, our findings indicate a broad reduction in allergic-proinflammatory events mediated by IL-33 neutralization in RSV-induced asthma exacerbation.
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Affiliation(s)
- Kristi J Warren
- Division of Pulmonary Medicine, Department of Internal Medicine, University of Utah Health, 26 N 1900 E, Salt Lake City, UT, 84132, USA. .,VA Salt Lake City Health Care System, Salt Lake City, UT, 84148, USA.
| | - Jill A Poole
- Critical Care and Sleep Division, Department of Internal Medicine, Pulmonary, University of Nebraska Medical Center, Omaha, USA
| | - Jenea M Sweeter
- Critical Care and Sleep Division, Department of Internal Medicine, Pulmonary, University of Nebraska Medical Center, Omaha, USA
| | - Jane M DeVasure
- Critical Care and Sleep Division, Department of Internal Medicine, Pulmonary, University of Nebraska Medical Center, Omaha, USA
| | - John D Dickinson
- Critical Care and Sleep Division, Department of Internal Medicine, Pulmonary, University of Nebraska Medical Center, Omaha, USA
| | - R Stokes Peebles
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University, Nashville, USA
| | - Todd A Wyatt
- Critical Care and Sleep Division, Department of Internal Medicine, Pulmonary, University of Nebraska Medical Center, Omaha, USA.,Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA.,VA Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
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13
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Ramirez-Moral I, Blok DC, Bernink JH, Garcia-Laorden MI, Florquin S, Boon L, Van't Veer C, Mack M, Saluzzo S, Knapp S, Spits H, de Vos AF, van der Poll T. Interleukin-33 improves local immunity during Gram-negative pneumonia by a combined effect on neutrophils and inflammatory monocytes. J Pathol 2021; 253:374-383. [PMID: 33305354 PMCID: PMC7986604 DOI: 10.1002/path.5601] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 10/30/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
Pneumonia represents a major health care burden and Gram‐negative bacteria provide an increasing therapeutic challenge at least in part through the emergence of multidrug‐resistant strains. IL‐33 is a multifunctional cytokine belonging to the IL‐1 family that can affect many different cell types. We sought here to determine the effect of recombinant IL‐33 on the host response during murine pneumonia caused by the common Gram‐negative pathogen Klebsiella pneumoniae. IL‐33 pretreatment prolonged survival for more than 1 day during lethal airway infection and decreased bacterial loads at the primary site of infection and distant organs. Postponed treatment with IL‐33 (3 h) also reduced bacterial growth and dissemination. IL‐33‐mediated protection was not observed in mice deficient for the IL‐33 receptor component IL‐1 receptor‐like 1. IL‐33 induced a brisk type 2 response, characterized by recruitment of type 2 innate lymphoid cells to the lungs and enhanced release of IL‐5 and IL‐13. However, neither absence of innate lymphoid cells or IL‐13, nor blocking of IL‐5 impacted on IL‐33 effects in mice infected with Klebsiella. Likewise, IL‐33 remained effective in reducing bacterial loads in mice lacking B, T, and natural killer T cells. Experiments using antibody‐mediated cell depletion indicated that neutrophils and inflammatory monocytes were of importance for antibacterial defense. The capacity of IL‐33 to restrict bacterial growth in the lungs was strongly reduced in mice depleted of both neutrophils and inflammatory monocytes, but not in mice selectively depleted of either one of these cell types. These results suggest that IL‐33 boosts host defense during bacterial pneumonia by a combined effect on neutrophils and inflammatory monocytes. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Ivan Ramirez-Moral
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Dana C Blok
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jochem H Bernink
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - M Isabel Garcia-Laorden
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Sandrine Florquin
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Cornelis Van't Veer
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Matthias Mack
- Department of Internal Medicine II - Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - Simona Saluzzo
- Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
| | - Sylvia Knapp
- Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, Vienna, Austria
| | - Hergen Spits
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Alex F de Vos
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Tom van der Poll
- Center of Experimental and Molecular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Division of Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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14
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Fattori V, Staurengo-Ferrari L, Zaninelli TH, Casagrande R, Oliveira RD, Louzada-Junior P, Cunha TM, Alves-Filho JC, Teixeira MM, Cunha FQ, Amaral FA, Verri WA. IL-33 enhances macrophage release of IL-1β and promotes pain and inflammation in gouty arthritis. Inflamm Res 2020; 69:1271-1282. [PMID: 32886146 DOI: 10.1007/s00011-020-01399-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/29/2020] [Accepted: 08/30/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To investigate the role of IL-33 in gouty arthritis. MATERIAL 174 Balb/c (wild-type) and 54 ST2-/- mice were used in this study. In vitro experiments were conducted in bone marrow-derived macrophages (BMDMs). Synovial fluid samples from gouty arthritis (n = 7) and osteoarthritis (n = 8) hospital patients were used to measure IL-33 and sST2 levels. METHODS Gout was induced by injection of monosodium urate (MSU) crystals in the knee joint of mice. Pain was determined using the electronic von Frey and static weight bearing. Neutrophil recruitment was determined by H&E staining, Rosenfeld staining slides, and MPO activity. ELISA was used for cytokine and sST2 measurement. The priming effect of IL-33 was determined in BMDM. RESULTS Synovial fluid of gout patients showed higher IL-33 levels and neutrophil counts than osteoarthritis patients. In mice, the absence of ST2 prevented mechanical pain, knee joint edema, neutrophil recruitment to the knee joint, and lowered IL-1β and superoxide anion levels. In macrophages, IL-33 enhanced the release of IL-1β and TNF-α, and BMDMs from ST2-/- showed reduced levels of these cytokines after stimulus with MSU crystals. CONCLUSION IL-33 mediates gout pain and inflammation by boosting macrophages production of cytokines upon MSU crystals stimulus.
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Affiliation(s)
- Victor Fattori
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Larissa Staurengo-Ferrari
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Tiago H Zaninelli
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Rubia Casagrande
- Department of Pharmaceutical Science, Londrina State University, Londrina, Brazil
| | - Rene D Oliveira
- Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Paulo Louzada-Junior
- Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Center for Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, Center for Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Mauro M Teixeira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Center for Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Flavio A Amaral
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Waldiceu A Verri
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil.
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445, KM 380, PO Box 10.011, Londrina, Parana, 86057-970, Brazil.
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15
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Liu M, Silva-Sanchez A, Randall TD, Meza-Perez S. Specialized immune responses in the peritoneal cavity and omentum. J Leukoc Biol 2020; 109:717-729. [PMID: 32881077 DOI: 10.1002/jlb.5mir0720-271rr] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/13/2020] [Accepted: 07/24/2020] [Indexed: 12/15/2022] Open
Abstract
The peritoneal cavity is a fluid filled space that holds most of the abdominal organs, including the omentum, a visceral adipose tissue that contains milky spots or clusters of leukocytes that are organized similar to those in conventional lymphoid tissues. A unique assortment of leukocytes patrol the peritoneal cavity and migrate in and out of the milky spots, where they encounter Ags or pathogens from the peritoneal fluid and respond accordingly. The principal role of leukocytes in the peritoneal cavity is to preserve tissue homeostasis and secure tissue repair. However, when peritoneal homeostasis is disturbed by inflammation, infection, obesity, or tumor metastasis, specialized fibroblastic stromal cells and mesothelial cells in the omentum regulate the recruitment of peritoneal leukocytes and steer their activation in unique ways. In this review, the types of cells that reside in the peritoneal cavity, the role of the omentum in their maintenance and activation, and how these processes function in response to pathogens and malignancy will be discussed.
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Affiliation(s)
- Mingyong Liu
- Department of Medicine, Division of Clinical Immunology and Rheumatology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Aaron Silva-Sanchez
- Department of Medicine, Division of Clinical Immunology and Rheumatology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Troy D Randall
- Department of Medicine, Division of Clinical Immunology and Rheumatology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Selene Meza-Perez
- Department of Medicine, Division of Clinical Immunology and Rheumatology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
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16
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Artru F, Bou Saleh M, Maggiotto F, Lassailly G, Ningarhari M, Demaret J, Ntandja-Wandji LC, Pais de Barros JP, Labreuche J, Drumez E, Helou DG, Dharancy S, Gantier E, Périanin A, Chollet-Martin S, Bataller R, Mathurin P, Dubuquoy L, Louvet A. IL-33/ST2 pathway regulates neutrophil migration and predicts outcome in patients with severe alcoholic hepatitis. J Hepatol 2020; 72:1052-1061. [PMID: 31953139 DOI: 10.1016/j.jhep.2019.12.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/30/2019] [Accepted: 12/12/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Severe alcoholic hepatitis (SAH) is associated with a high risk of infection. The IL-33/ST2 pathway is involved in sepsis control but data regarding its role in alcohol-related liver disease (ALD) are lacking. We aimed to characterize the role of IL-33/ST2 in the polymorphonuclear neutrophils (PMNs) of patients with ALD and SAH. METHODS Serum and circulating neutrophils were collected from patients with SAH, alcoholic cirrhosis and healthy controls. We quantified IL-33/ST2 pathway activity and CXCR2 at baseline and after exposure to IL-33. We also determined the migration capacity of PMNs. RESULTS The decoy receptor of IL-33 (soluble ST2 [sST2]) was increased in SAH vs. cirrhosis and controls, demonstrating the defect in this pathway during ALD. The sST2 level was associated with response to treatment, 2-month survival, infection-free survival and probability of infection in SAH. Endotoxemia was weakly correlated with sST2. GRK2, a negative regulator of CXCR2, was overexpressed in PMNs of patients with SAH and cirrhosis and was decreased by IL-33. CXCR2 levels on PMNs were lower in SAH vs. cirrhosis and controls. Treatment with IL-33 partially restored CXCR2 expression in SAH and cirrhosis. PMN migration upon IL-8 was lower in patients with SAH and cirrhosis vs. controls. Treatment with IL-33 partially restored migration in those with SAH and cirrhosis. Interestingly, the migration capacity of PMNs and the response to IL-33 were enhanced in responders to corticosteroids (Lille <0.45) compared to non-responders. CONCLUSION The IL33/ST2 pathway is defective in SAH and predicts outcome. This defect is associated with decreased CXCR2 expression on the surface of PMNs and lower migration capacity, which can be corrected by IL-33, especially in patients responding to steroids. These results suggest that IL-33 has therapeutic potential for SAH and its infectious complications. LAY SUMMARY The neutrophils of patients with severe alcoholic hepatitis are associated with a defect in the IL-33/ST2 pathway. This defect is associated with lower migration capacities in neutrophils and a higher probability of getting infected. Administration of IL-33 to the neutrophils at least partly restores this defect and may be effective at reducing the risk of infection in patients with severe alcoholic hepatitis.
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Affiliation(s)
- Florent Artru
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Mohamed Bou Saleh
- Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - François Maggiotto
- Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Guillaume Lassailly
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Massih Ningarhari
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Julie Demaret
- Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France; Centre de Biologie-Pathologie, CHU de Lille, Lille, France
| | - Line-Carolle Ntandja-Wandji
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | | | | | - Elodie Drumez
- Département de biostatistiques, CHU de Lille, Lille, France
| | - Doumet Georges Helou
- Inserm/Université Paris-Sud/Université Paris-Saclay, UMR996, Chatenay-Malabry, France; Assistance publique-Hôpitaux de Paris, Hôpital Bichat, Laboratoire d'immunologie « Autoimmunité et Hypersensibilités », Paris, France
| | - Sébastien Dharancy
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Emilie Gantier
- Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Axel Périanin
- Inserm/Faculté de Médecine Xavier Bichat, UMRS-1149, Paris, France; CNRS, ERL-8252 Centre de Recherche sur l'Inflammation, Paris, France; Université Paris Diderot, Sorbonne Paris Cité, Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Sylvie Chollet-Martin
- Inserm/Université Paris-Sud/Université Paris-Saclay, UMR996, Chatenay-Malabry, France; Assistance publique-Hôpitaux de Paris, Hôpital Bichat, Laboratoire d'immunologie « Autoimmunité et Hypersensibilités », Paris, France
| | - Ramon Bataller
- Division of Gastroenterology, Hepatology and Nutrition, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Philippe Mathurin
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France
| | - Laurent Dubuquoy
- Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France.
| | - Alexandre Louvet
- Hôpital Claude-Huriez, Service Maladies de l'Appareil Digestif, CHU Lille, Lille, France; Université de Lille/Inserm/CHU de Lille, U995 - LIRIC - Lille Inflammation Research Center, Lille, France.
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17
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Lewis BW, Vo T, Choudhary I, Kidder A, Bathula C, Ehre C, Wakamatsu N, Patial S, Saini Y. Ablation of IL-33 Suppresses Th2 Responses but Is Accompanied by Sustained Mucus Obstruction in the Scnn1b Transgenic Mouse Model. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:1650-1660. [PMID: 32060135 PMCID: PMC7714586 DOI: 10.4049/jimmunol.1900234] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 01/14/2020] [Indexed: 12/14/2022]
Abstract
Cystic fibrosis is characterized by dehydration of the airway surface liquid layer with persistent mucus obstruction. Th2 immune responses are often manifested as increased mucous cell density (mucous cell metaplasia) associated with mucus obstruction. IL-33 is a known inducer of Th2 immune responses, but its roles in mucus obstruction and related phenotypes in a cystic fibrosis-like lung disease model (i.e., Scnn1b-Tg-positive [Tg+]) mouse, remain unclear. Accordingly, IL-33 knockout (IL-33KO) Tg+ mice were examined and compared with IL-33 heterozygous (IL-33HET) Tg+ mice. As compared with IL-33HET/Tg+ mice, IL-33KO/Tg+ mice had complete absence of bronchoalveolar lavage fluid eosinophilia, accompanied with significant reduction in bronchoalveolar lavage fluid concentration of IL-5, a cytokine associated with eosinophil differentiation and recruitment, and IL-4, a major Th2 cytokine. As compared with IL-33HET/Tg+ mice, IL-33KO/Tg+ mice had significantly reduced levels of Th2-associated gene signatures (Slc26a4, Clca1, Retnla, and Chi3l4), along with complete loss of intracellular mucopolysaccharide staining in the airway epithelium. As compared with IL-33HET/Tg+ mice, although the IL-33KO/Tg+ mice had significantly reduced levels of MUC5AC protein expression, they showed no reduction in the degree of mucus obstruction, MUC5B protein expression, bacterial burden, and neonatal mortality. Interestingly, the histological features, including subepithelial airway inflammation and alveolar space enlargement, were somewhat exaggerated in IL-33KO/Tg+ mice compared with IL-33HET/Tg+ mice. Taken together, our data indicate that although IL-33 modulates Th2 inflammatory responses and MUC5AC protein production, mucus obstruction is not dependent on IL-33.
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Affiliation(s)
- Brandon W Lewis
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Thao Vo
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Ishita Choudhary
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Allison Kidder
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Chandra Bathula
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Camille Ehre
- Marsico Lung Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; and
| | - Nobuko Wakamatsu
- Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Sonika Patial
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803
| | - Yogesh Saini
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803;
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18
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Andersson JA, Peniche AG, Galindo CL, Boonma P, Sha J, Luna RA, Savidge TC, Chopra AK, Dann SM. New Host-Directed Therapeutics for the Treatment of Clostridioides difficile Infection. mBio 2020; 11:e00053-20. [PMID: 32156806 PMCID: PMC7064747 DOI: 10.1128/mbio.00053-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 01/31/2020] [Indexed: 01/25/2023] Open
Abstract
Frequent and excessive use of antibiotics primes patients to Clostridioides difficile infection (CDI), which leads to fatal pseudomembranous colitis, with limited treatment options. In earlier reports, we used a drug repurposing strategy and identified amoxapine (an antidepressant), doxapram (a breathing stimulant), and trifluoperazine (an antipsychotic), which provided significant protection to mice against lethal infections with several pathogens, including C. difficile However, the mechanisms of action of these drugs were not known. Here, we provide evidence that all three drugs offered protection against experimental CDI by reducing bacterial burden and toxin levels, although the drugs were neither bacteriostatic nor bactericidal in nature and had minimal impact on the composition of the microbiota. Drug-mediated protection was dependent on the presence of the microbiota, implicating its role in evoking host defenses that promoted protective immunity. By utilizing transcriptome sequencing (RNA-seq), we identified that each drug increased expression of several innate immune response-related genes, including those involved in the recruitment of neutrophils, the production of interleukin 33 (IL-33), and the IL-22 signaling pathway. The RNA-seq data on selected genes were confirmed by quantitative real-time PCR (qRT-PCR) and protein assays. Focusing on amoxapine, which had the best anti-CDI outcome, we demonstrated that neutralization of IL-33 or depletion of neutrophils resulted in loss of drug efficacy. Overall, our lead drugs promote disease alleviation and survival in the murine model through activation of IL-33 and by clearing the pathogen through host defense mechanisms that critically include an early influx of neutrophils.IMPORTANCEClostridioides difficile is a spore-forming anaerobic bacterium and the leading cause of antibiotic-associated colitis. With few therapeutic options and high rates of disease recurrence, the need to develop new treatment options is urgent. Prior studies utilizing a repurposing approach identified three nonantibiotic Food and Drug Administration-approved drugs, amoxapine, doxapram, and trifluoperazine, with efficacy against a broad range of human pathogens; however, the protective mechanisms remained unknown. Here, we identified mechanisms leading to drug efficacy in a murine model of lethal C. difficile infection (CDI), advancing our understanding of the role of these drugs in infectious disease pathogenesis that center on host immune responses to C. difficile Overall, these studies highlight the crucial involvement of innate immune responses, as well as the importance of immunomodulation as a potential therapeutic option to combat CDI.
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Affiliation(s)
- Jourdan A Andersson
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA
- Texas Children's Microbiome Center, Department of Pathology, Texas Children's Hospital, Houston, Texas, USA
| | - Alex G Peniche
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA
| | - Cristi L Galindo
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Prapaporn Boonma
- Faculty of Medicine, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Jian Sha
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
| | - Ruth Ann Luna
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA
- Texas Children's Microbiome Center, Department of Pathology, Texas Children's Hospital, Houston, Texas, USA
| | - Tor C Savidge
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA
- Texas Children's Microbiome Center, Department of Pathology, Texas Children's Hospital, Houston, Texas, USA
| | - Ashok K Chopra
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Translational Sciences, University of Texas Medical Branch, Galveston, Texas, USA
| | - Sara M Dann
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Translational Sciences, University of Texas Medical Branch, Galveston, Texas, USA
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19
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Wang X, Li X, Chen L, Yuan B, Liu T, Dong Q, Liu Y, Yin H. Interleukin-33 facilitates cutaneous defense against Staphylococcus aureus by promoting the development of neutrophil extracellular trap. Int Immunopharmacol 2020; 81:106256. [PMID: 32028244 DOI: 10.1016/j.intimp.2020.106256] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 01/14/2020] [Accepted: 01/24/2020] [Indexed: 12/23/2022]
Abstract
Neutrophil extracellular traps (NETs) are consisted of DNA fibers and granular proteins and the formation of NETs has been identified as a crucial element of innate immune defense. IL-33 is a member of the IL-1 family cytokines and has been known as a strong trigger of type-2 immunity. Growing studies imply that IL-33 is involved in host defense against microbial infection. Here, we investigate the underlying influence of IL-33 on NET formation in mice with S. aureus cutaneous infection. We found that the level of IL-33 was significantly elevated in skin lesions of S. aureus-infected mice. The alarmin IL-33 inspired host innate defense through activation of NADPH oxidase to produce reactive oxygen species (ROS). Besides mediating the direct bactericidal activity within phagolysosomes, ROS production in IL-33-primed neutrophils was also critical for induction of NET formation. Enhancement of NET production by IL-33 contributed to ensnaring S. aureus and bacterial killing activity in vitro and in vivo. All together, these findings set up an IL-33/ST2 axis modulating NET generation, which strengthens host defense of innate immunity against S. aureus infection.
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Affiliation(s)
- Xiaodi Wang
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xiangyong Li
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524023, China
| | - Liying Chen
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Baohong Yuan
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Tao Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Qun Dong
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yunjun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Hui Yin
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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20
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Chen YL, Gutowska-Owsiak D, Hardman CS, Westmoreland M, MacKenzie T, Cifuentes L, Waithe D, Lloyd-Lavery A, Marquette A, Londei M, Ogg G. Proof-of-concept clinical trial of etokimab shows a key role for IL-33 in atopic dermatitis pathogenesis. Sci Transl Med 2019; 11:eaax2945. [PMID: 31645451 DOI: 10.1126/scitranslmed.aax2945] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/15/2019] [Accepted: 09/25/2019] [Indexed: 12/15/2022]
Abstract
Targeted inhibition of cytokine pathways provides opportunities to understand fundamental biology in vivo in humans. The IL-33 pathway has been implicated in the pathogenesis of atopy through genetic and functional associations. We investigated the role of IL-33 inhibition in a first-in-class phase 2a study of etokimab (ANB020), an IgG1 anti-IL-33 monoclonal antibody, in patients with atopic dermatitis (AD). Twelve adult patients with moderate to severe AD received a single systemic administration of etokimab. Rapid and sustained clinical benefit was observed, with 83% achieving Eczema Area and Severity Index 50 (EASI50), and 33% EASI75, with reduction in peripheral eosinophils at day 29 after administration. We noted significant reduction in skin neutrophil infiltration after etokimab compared with placebo upon skin challenge with house dust mite, reactivity to which has been implicated in the pathogenesis of AD. We showed that etokimab also inhibited neutrophil migration to skin interstitial fluid in vitro. Besides direct effects on neutrophil migration, etokimab revealed additional unexpected CXCR1-dependent effects on IL-8-induced neutrophil migration. These human in vivo findings confirm an IL-33 upstream role in modulating skin inflammatory cascades and define the therapeutic potential for IL-33 inhibition in human diseases, including AD.
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Affiliation(s)
- Yi-Ling Chen
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK
| | - Danuta Gutowska-Owsiak
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK
- Institute of Biotechnology UG, Intercollegiate Faculty of Biotechnology of University of Gdańsk and Medical University of Gdańsk, 80-307 Gdańsk, Poland
| | - Clare S Hardman
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK
| | | | | | | | - Dominic Waithe
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK
| | | | | | | | - Graham Ogg
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK.
- Oxford University Hospitals, Oxford OX3 7LE, UK
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21
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Morais NGD, Costa TBD, Ferreira de Lima LF, Basílio DDS, Morais NNGD, Paiva Cavalcanti MD, Pereira VRA, de Castro CMMB. Impact of neonatal malnutrition on expression TLR-9, NF-kB and cytokines of macrophages infected in vitro with methicillin resistant Staphylococcus aureus. Microb Pathog 2019; 132:254-260. [PMID: 31075429 DOI: 10.1016/j.micpath.2019.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/12/2019] [Accepted: 05/06/2019] [Indexed: 01/05/2023]
Abstract
Early nutritional aggressions promote epigenetic adjustments that culminate in the loss of phenotype plasticity (with permanent long-term modifications). Maternal diet and inadequate neonatal nutrition can result in fetal programming that presents susceptibility to infections in adult life. Thus, it becomes essential to verify the impacts of neonatal malnutrition (even following nutritional replacement) on the immunological response to methicillin resistant Staphylococcus aureus (MRSA) infections. Male rats were divided into two distinct groups: Nourished and Malnourished. After isolation of mononuclear cells, four systems were established: negative control, positive control and two testing systems, (MSSA and MRSA). Tests were performed to analyze expression of TLR-9, NF-kB, IL-1β, IL-18 and IL-33. For statistical analysis, we used the Student t and ANOVA tests p < 0.05. Even after nutritional replacement, malnutrition in the neonatal period compromised the animals' weight gains p < 0.05. There was a reduction in the expression of the immunological response in the positive control, however deregulation was observed in the gene expression of MRSA-infected macrophages, with a reduction in TLR-9 expression, and overexpression in NF-kB and cytokines p < 0.05. Puppies inflicted with protein-calorie malnutrition were compromised; (long-term) body growth and immune response. In the infectious scenario, immune collapse is reflected in inflammatory response exacerbation with a likely histolytic character. Immune disabling (resulting from gene expression deregulation) causes susceptibility to infections due to ineffective recognition, intense pro-inflammatory mediation, and cell death. It is suggested that neonatal malnutrition can program susceptibility to multiresistant bacterial infections, and generally favors a triggering of more intense confrontations with fatal outcomes.
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Huang P, Li X, Meng Y, Yuan B, Liu T, Jiao M, Wang X, Liu Y, Yin H. Interleukin-33 regulates hematopoietic stem cell regeneration after radiation injury. Stem Cell Res Ther 2019; 10:123. [PMID: 30999922 PMCID: PMC6471888 DOI: 10.1186/s13287-019-1221-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/21/2019] [Accepted: 03/25/2019] [Indexed: 12/15/2022] Open
Abstract
Background IL-33 is a pleiotropic cytokine of the IL-1 family, which has been reported to implicate in both innate and adaptive immune responses. Recent studies suggest IL-33 is crucial for regulation of myelopoiesis and myeloid cell activity. Here, we explore the potential effect of IL-33 against hematopoietic injury after total body irradiation (TBI). Methods C57BL/6 mice were irradiated with a sublethal dose of radiation (600 cGy) and treated with IL-33 at a dose of 3 μg/dose i.p. once a day for seven consecutive days. H&E staining was used to determine the bone marrow cellularity. A flow cytometer was used to quantify the hematopoietic stem cell (HSC) population, cell proliferation, and apoptosis. The colony-forming assay was used to evaluate the clonogenic function of HSCs. RT-qPCR was used to determine the expression of apoptosis-associated genes. Results Bone marrow HSCs from wild-type mice expressed functional IL-33 receptor (ST2), and treatment with IL-33 promoted the recovery of the HSC pool in vivo and improved the survival of mice after TBI. Conversely, mice with ST2 deficiency showed decreased HSC regeneration and mouse survival after TBI. Of note, IL-33 reduced radiation-induced apoptosis of HSCs and mediated this effect through repression of the p53-PUMA pathway. Conclusions IL-33 regulates HSC regeneration after myelosuppressive injury through protecting HSCs from apoptosis and enhancing proliferation of the surviving HSCs.
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Affiliation(s)
- Ping Huang
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiangyong Li
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, 524023, China
| | - Ying Meng
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Baohong Yuan
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Tao Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Mengya Jiao
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiaodi Wang
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Yunjun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Hui Yin
- Department of Microbiology and Immunology, Guangdong Pharmaceutical University, Guangzhou, 510006, China. .,Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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23
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IL-33 in obesity: where do we go from here? Inflamm Res 2019; 68:185-194. [PMID: 30656387 DOI: 10.1007/s00011-019-01214-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 11/19/2018] [Accepted: 01/09/2019] [Indexed: 12/21/2022] Open
Abstract
IL-33 is a cytokine that belongs to the IL-1 family and is classically associated with type 2-like immune responses. In the adipose tissue, IL-33 is related to the beiging of adipocytes and to the maintenance of adipose tissue-resident immune cells, such as innate lymphoid cells 2, alternatively activated macrophages and regulatory T cells, which contribute to the maintenance of adipose tissue homeostasis. In the obese adipose tissue, the number of these cells is diminished, unlike the expression of IL-33, which is up-regulated. However, despite its increased expression, IL-33 is not able to maintain the homeostasis of the obese adipose tissue. IL-33 treatment, on the other hand, highly improves obesity-related inflammatory and metabolic alterations. The evidence that exogenous IL-33, but not adipose tissue-driven IL-33, regulates the inflammatory process in obesity leaves a gap in the understanding of IL-33 biology. Thus, in this review we discuss the potential mechanisms associated with the impaired action of IL-33 in obesity.
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24
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Hacker S, Dieplinger B, Werba G, Nickl S, Roth GA, Krenn CG, Mueller T, Ankersmit HJ, Haider T. Increased serum concentrations of soluble ST2 predict mortality after burn injury. ACTA ACUST UNITED AC 2018; 56:2079-2087. [DOI: 10.1515/cclm-2018-0042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 05/24/2018] [Indexed: 12/15/2022]
Abstract
Abstract
Background:
Large burn injuries induce a systemic response in affected patients. Soluble ST2 (sST2) acts as a decoy receptor for interleukin-33 (IL-33) and has immunosuppressive effects. sST2 has been described previously as a prognostic serum marker. Our aim was to evaluate serum concentrations of sST2 and IL-33 after thermal injury and elucidate whether sST2 is associated with mortality in these patients.
Methods:
We included 32 burn patients (total body surface area [TBSA] >10%) admitted to our burn intensive care unit and compared them to eight healthy probands. Serum concentrations of sST2 and IL-33 were measured serially using an enzyme-linked immunosorbent assay (ELISA) technique.
Results:
The mean TBSA was 32.5%±19.6%. Six patients (18.8%) died during the hospital stay. Serum analyses showed significantly increased concentrations of sST2 and reduced concentrations of IL-33 in burn patients compared to healthy controls. In our study cohort, higher serum concentrations of sST2 were a strong independent predictor of mortality.
Conclusions:
Burn injuries cause an increment of sST2 serum concentrations with a concomitant reduction of IL-33. Higher concentrations of sST2 are associated with increased in-hospital mortality in burn patients.
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25
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Naringenin mitigates titanium dioxide (TiO 2)-induced chronic arthritis in mice: role of oxidative stress, cytokines, and NFκB. Inflamm Res 2018; 67:997-1012. [PMID: 30370484 DOI: 10.1007/s00011-018-1195-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 09/14/2018] [Accepted: 10/12/2018] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE To evaluate the effect and mechanisms of naringenin in TiO2-induced chronic arthritis in mice, a model resembling prosthesis and implant inflammation. TREATMENT Flavonoids are antioxidant and anti-inflammatory molecules with important anti-inflammatory effect. Mice were daily treated with the flavonoid naringenin (16.7-150 mg/kg, orally) for 30 days starting 24 h after intra-articular knee injection of 3 mg of TiO2. METHODS TiO2-induced arthritis resembles cases of aseptic inflammation induced by prosthesis and/or implants. Mice were stimulated with 3 mg of TiO2 and after 24 h mice started to be treated with naringenin. The disease phenotype, treatment toxicity, histopathological damage, oxidative stress, cytokine expression and NFκB were evaluated after 30 days of treatment. RESULTS Naringenin inhibited TiO2-induced mechanical hyperalgesia (96%), edema (77%) and leukocyte recruitment (74%) without inducing toxicity. Naringenin inhibited histopathological index (HE, 49%), cartilage damage (Toluidine blue tibial staining 49%, and proteoglycan 98%), and bone resorption (TRAP-stained 73%). These effects were accompanied by inhibition of oxidative stress (gp91phox 93%, NBT 83%, and TBARS 41%) cytokine mRNA expression (IL-33 82%, TNFα 76%, pro-IL-1β 100%, and IL-6 61%), and NFκB activation (100%). CONCLUSION Naringenin ameliorates TiO2-induced chronic arthritis inducing analgesic and anti-inflammatory responses with improvement in the histopathological index, cartilage damage, and bone resorption.
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26
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Peng C, Han J, Ye X, Zhang X. IL-33 Treatment Attenuates the Systemic Inflammation Reaction in Acinetobacter baumannii Pneumonia by Suppressing TLR4/NF-κB Signaling. Inflammation 2018; 41:870-877. [PMID: 29508184 DOI: 10.1007/s10753-018-0741-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Interleukin (IL)-33 treatment has been reported to reduce mortality in a rat model of sepsis, and the present study aimed to determine whether this effect of IL-33 is achieved through a reduction in the systemic inflammatory response in Acinetobacter baumannii pneumonia. After induction of pneumonia, rats were treated with normal saline or IL-33, and mortality over 5 days was recorded. Inflammation within lung tissues was evaluated by hematoxylin and eosin staining as well as measurement of the concentrations of IL-8 and tumor necrosis factor alpha (TNF-α) in the bronchoalveolar lavage fluid (BALF) and plasma by enzyme-linked immunosorbent assay. In addition, the expression of Toll-like receptor 4 (TLR4), ST2, and nuclear factor kappa B (NF-κB) in rat lung tissues was assessed by western blotting. The result showed that the mortality rate and systemic inflammation were significantly increased in rats upon infection with A. baumannii, as evidenced by significant increases in the IL-8 and TNF-α levels in BALF and plasma as well as increased NF-κB activity and TLR4 expression in rat lung tissues. Importantly, IL-33 (1 μg/kg) treatment significantly decreased mortality and pulmonary inflammation in A. baumannii-infected rats. Moreover, IL-33 treatment suppressed the elevation of IL-8 and TNF-α levels and inhibited TLR4 expression and NF-κB activation. Overall, these results suggest that IL-33 may decrease the mortality and inhibit the systematic inflammatory response associated with A. baumannii pneumonia by suppressing TLR4/NF-κB signaling.
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Affiliation(s)
- Chunhong Peng
- Department of Respiratory Medicine, Guizhou Provincial People's Hospital, 83 Zhongshan Road, Nanming District, Guiyang, 550002, China.
| | - Jin Han
- Department of Respiratory Medicine, Guizhou Provincial People's Hospital, 83 Zhongshan Road, Nanming District, Guiyang, 550002, China
| | - Xianwei Ye
- Department of Respiratory Medicine, Guizhou Provincial People's Hospital, 83 Zhongshan Road, Nanming District, Guiyang, 550002, China
| | - Xiangyan Zhang
- Department of Respiratory Medicine, Guizhou Provincial People's Hospital, 83 Zhongshan Road, Nanming District, Guiyang, 550002, China
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Staurengo-Ferrari L, Trevelin SC, Fattori V, Nascimento DC, de Lima KA, Pelayo JS, Figueiredo F, Casagrande R, Fukada SY, Teixeira MM, Cunha TM, Liew FY, Oliveira RD, Louzada-Junior P, Cunha FQ, Alves-Filho JC, Verri WA. Interleukin-33 Receptor (ST2) Deficiency Improves the Outcome of Staphylococcus aureus-Induced Septic Arthritis. Front Immunol 2018; 9:962. [PMID: 29867945 PMCID: PMC5968393 DOI: 10.3389/fimmu.2018.00962] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/18/2018] [Indexed: 01/29/2023] Open
Abstract
The ST2 receptor is a member of the Toll/IL-1R superfamily and interleukin-33 (IL-33) is its agonist. Recently, it has been demonstrated that IL-33/ST2 axis plays key roles in inflammation and immune mediated diseases. Here, we investigated the effect of ST2 deficiency in Staphylococcus aureus-induced septic arthritis physiopathology. Synovial fluid samples from septic arthritis and osteoarthritis individuals were assessed regarding IL-33 and soluble (s) ST2 levels. The IL-33 levels in samples from synovial fluid were significantly increased, whereas no sST2 levels were detected in patients with septic arthritis when compared with osteoarthritis individuals. The intra-articular injection of 1 × 107 colony-forming unity/10 μl of S. aureus American Type Culture Collection 6538 in wild-type (WT) mice induced IL-33 and sST2 production with a profile resembling the observation in the synovial fluid of septic arthritis patients. Data using WT, and ST2 deficient (−/−) and interferon-γ (IFN-γ)−/− mice showed that ST2 deficiency shifts the immune balance toward a type 1 immune response that contributes to eliminating the infection due to enhanced microbicide effect via NO production by neutrophils and macrophages. In fact, the treatment of ST2−/− bone marrow-derived macrophage cells with anti-IFN-γ abrogates the beneficial phenotype in the absence of ST2, which confirms that ST2 deficiency leads to IFN-γ expression and boosts the bacterial killing activity of macrophages against S. aureus. In agreement, WT cells achieved similar immune response to ST2 deficiency by IFN-γ treatment. The present results unveil a previously unrecognized beneficial effect of ST2 deficiency in S. aureus-induced septic arthritis.
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Affiliation(s)
- Larissa Staurengo-Ferrari
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Silvia C Trevelin
- Cardiovascular Division, British Heart Foundation Centre, King's College London, London, United Kingdom.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Victor Fattori
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Daniele C Nascimento
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Kalil A de Lima
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jacinta S Pelayo
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Florêncio Figueiredo
- Laboratory of Pathology, Faculty of Medicine, University of Brasilia, Brasilia, Brazil
| | - Rubia Casagrande
- Department of Pharmaceutical Sciences, Healthy Sciences Centre, Londrina State University, Londrina, Brazil
| | - Sandra Y Fukada
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Mauro M Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciencias Biologicas (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Foo Y Liew
- Division of Immunology, Infection and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Rene D Oliveira
- Division of Clinical Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Paulo Louzada-Junior
- Division of Clinical Immunology, School of Medicine of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - José C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Waldiceu A Verri
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
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28
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Kong IG, Kim DW. Pathogenesis of Recalcitrant Chronic Rhinosinusitis: The Emerging Role of Innate Immune Cells. Immune Netw 2018; 18:e6. [PMID: 29732233 PMCID: PMC5928419 DOI: 10.4110/in.2018.18.e6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 02/05/2018] [Accepted: 02/13/2018] [Indexed: 12/14/2022] Open
Abstract
Chronic rhinosinusitis (CRS) is a major part of the recalcitrant inflammatory diseases of the upper airway that needs enormous socioeconomic burden. T helper (Th) 2 type immune responses recruiting eosinophils were the most well-known immune players in CRS pathogenesis especially in western countries. By the piling up of a vast amount of researches to elucidate the pathogenic mechanism of CRS recently, heterogeneous inflammatory processes were found to be related to the phenotypes of CRS. Recently more cells other than T cells were in the focus of CRS pathogenesis, such as the epithelial cell, macrophage, innate lymphoid cells, and neutrophils. Here, we reviewed the recent research focusing on the innate immune cells related to CRS pathogenesis.
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Affiliation(s)
- Il Gyu Kong
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul 07061, Korea
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IL-33 induces immunosuppressive neutrophils via a type 2 innate lymphoid cell/IL-13/STAT6 axis and protects the liver against injury in LCMV infection-induced viral hepatitis. Cell Mol Immunol 2018; 16:126-137. [PMID: 29400707 DOI: 10.1038/cmi.2017.147] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 11/11/2017] [Accepted: 11/11/2017] [Indexed: 12/21/2022] Open
Abstract
Viral hepatitis is still a public health problem affecting several million people around the world. Neutrophils are polymorphonuclear cells that have a critical role in antibacterial infection. However, the role of neutrophils in viral infection is not fully understood. By using a mouse model of lymphocytic choriomeningitis virus infection-induced viral hepatitis, we observed increased neutrophil recruitment in the liver accompanied by enhanced CD8+ T-cell responses. Liver neutrophils expressed high levels of immunomodulatory cytokines, such as C-X-C chemokine ligand 2, arginase-1, inducible nitric oxide synthase and interleukin (IL)-10, demonstrating immunosuppressive properties. Depletion of neutrophils in vivo by a neutralizing antibody resulted in the exacerbation of liver injury and the promotion of T-cell responses at the immune contraction stage. IL-33 significantly induced neutrophil recruitment in the liver and attenuated liver injury by limiting effector T-cell accumulation. Mechanistically, we found that IL-33 promoted the expression of arginase-1 in neutrophils through the type 2 innate lymphoid cell (ILC2)-derived IL-13. Additionally, IL-13 increased the inhibitory effect of neutrophils on CD8+ T-cell proliferation in vitro, partially through arginase-1. Finally, we found that IL-13 induced arginase-1 expression, depending on signal transducer and activator of transcription factor 6 (STAT6) signaling. Therefore, IL-33 induced immunosuppressive neutrophils via an ILC2/IL-13/STAT6 axis. Collectively, our findings shed new light on the mechanisms associated with IL-33-triggered neutrophils in the liver and suggest potential targets for therapeutic investigation in viral hepatitis.
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Novel protective mechanism for interleukin-33 at the mucosal barrier during influenza-associated bacterial superinfection. Mucosal Immunol 2018; 11:199-208. [PMID: 28401938 PMCID: PMC5638662 DOI: 10.1038/mi.2017.32] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 03/01/2017] [Indexed: 02/04/2023]
Abstract
Influenza A is a highly contagious respiratory virus that causes seasonal epidemics and occasional worldwide pandemics. The primary cause of influenza-related mortality is bacterial superinfection. There are numerous mechanisms by which preceding influenza infection attenuates host defense, allowing for increased susceptibility to bacterial pneumonia. Herein, we demonstrate that influenza inhibits Staphylococcus aureus-induced production of interleukin-33 (IL-33). Restoration of IL-33 during influenza A and methicillin-resistant S. aureus superinfection enhanced bacterial clearance and improved mortality. Innate lymphoid Type 2 cells and alternatively activated macrophages are not required for IL-33-mediated protection during superinfection. We show that IL-33 treatment resulted in neutrophil recruitment to the lung, associated with improved bacterial clearance. These findings identify a novel role for IL-33 in antibacterial host defense at the mucosal barrier.
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Fattori V, Hohmann MSN, Rossaneis AC, Manchope MF, Alves-Filho JC, Cunha TM, Cunha FQ, Verri WA. Targeting IL-33/ST2 signaling: regulation of immune function and analgesia. Expert Opin Ther Targets 2017; 21:1141-1152. [PMID: 29076792 DOI: 10.1080/14728222.2017.1398734] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
INTRODUCTION IL-33 signals through ST2 receptor and promotes inflammation by activating downstream pathways culminating in the production of pro-inflammatory mediators such as IL-1β, TNF-α, and IL-6 in an NF-κB-dependent manner. In fact, compelling evidence has demonstrated the importance of IL-33/ST2 in both innate and adaptive immune responses in diseases presenting pain as an important clinical symptom. Areas covered: IL-33 is a pleiotropic cytokine with varied immune functions. Dysregulation of this pathway has been described as a key step in varied immune responses. Further, IL-33 contributes to peripheral and spinal cord nociceptor neuron sensitization in innate and adaptive inflammatory immune responses as well as in neuropathic and cancer pain. In this sense, targeting IL-33/ST2 signaling is a promising therapeutic approach. Expert opinion: The modulation of IL-33/ST2 signaling represents a possible approach in regulating immune functions. In addition to immune function, strategies targeting IL-33/ST2 signaling pathway display a favorable preclinical analgesic profile in both acute and chronic models of pain. Therefore, IL-33-targeting therapies represent a potential target for the development of novel analgesic drugs given that IL-33 activates, for instance, neutrophils, mast cells, macrophages, astrocytes, and microglia that are important cells in the induction and maintenance of chronic pain states.
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Affiliation(s)
- Victor Fattori
- a Departamento de Ciências Patológicas, Centro de Ciências Biológicas , Universidade Estadual de Londrina , Londrina , Brazil
| | - Miriam S N Hohmann
- a Departamento de Ciências Patológicas, Centro de Ciências Biológicas , Universidade Estadual de Londrina , Londrina , Brazil
| | - Ana C Rossaneis
- a Departamento de Ciências Patológicas, Centro de Ciências Biológicas , Universidade Estadual de Londrina , Londrina , Brazil
| | - Marilia F Manchope
- a Departamento de Ciências Patológicas, Centro de Ciências Biológicas , Universidade Estadual de Londrina , Londrina , Brazil
| | - Jose C Alves-Filho
- b Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto , Brazil
| | - Thiago M Cunha
- b Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto , Brazil
| | - Fernando Q Cunha
- b Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto , Brazil
| | - Waldiceu A Verri
- a Departamento de Ciências Patológicas, Centro de Ciências Biológicas , Universidade Estadual de Londrina , Londrina , Brazil
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32
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Predictive value of low interleukin-33 in critically ill patients. Cytokine 2017; 103:109-113. [PMID: 28974430 DOI: 10.1016/j.cyto.2017.09.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 02/08/2023]
Abstract
Patients admitted to a medical intensive care unit (ICU) are characterized by an activated immune system and exhibit a high mortality rate irrespective of the underlying cause of admission. Interleukin (IL)-33 has been shown to be protective in experimental sepsis models and it has been demonstrated that circulating levels of its "decoy" receptor soluble ST2 (sST2) are associated with outcome in critically ill patients. The aim of the present study was to investigate whether circulating IL-33 is associated with 30-day mortality in patients admitted to a medical ICU. In this prospective, observational study, both IL-33 and sST2 levels were assessed in 223 consecutive patients at ICU admission using specific enzyme-linked immunosorbent assays (ELISAs). During the 30-day follow-up, 58 patients (26%) died. Circulating IL-33 was detectable in 166 patients and in 57 patients, serum IL-33 was below the detection limit. Both detectable IL-33 and sST2 below the median were strong predictors of survival in critically ill patients independent of acute physiology and chronic health evaluation II (APACHE II) score. IL-33 and sST2 predicted risk independent from each other. Patients with both, non-detectable levels of IL-33 and sST2 levels above the median, showed a dramatically increased mortality risk (HR 6.9 95% CI 3.0-16.2; p<0.001). Low levels of IL-33 and increased levels of sST2 predict mortality risk in critically ill patients independent from each other and APACHE II score. Both together showed additive predictive value suggesting a pathogenic role of the IL-33/ST2 system in critically ill patients.
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33
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Lewis BW, Sultana R, Sharma R, Noël A, Langohr I, Patial S, Penn AL, Saini Y. Early Postnatal Secondhand Smoke Exposure Disrupts Bacterial Clearance and Abolishes Immune Responses in Muco-Obstructive Lung Disease. THE JOURNAL OF IMMUNOLOGY 2017; 199:1170-1183. [PMID: 28667160 DOI: 10.4049/jimmunol.1700144] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 06/05/2017] [Indexed: 01/15/2023]
Abstract
Secondhand smoke (SHS) exposure has been linked to the worsening of ongoing lung diseases. However, whether SHS exposure affects the manifestation and natural history of imminent pediatric muco-obstructive airway diseases such as cystic fibrosis remains unclear. To address these questions, we exposed Scnn1b transgenic (Scnn1b-Tg+) mice to SHS from postnatal day (PND) 3-21 and lung phenotypes were examined at PND22. Although a majority of filtered air (FA)-exposed Scnn1b-Tg+ (FA-Tg+) mice successfully cleared spontaneous bacterial infections by PND22, the SHS-exposed Scnn1b-Tg+ (SHS-Tg+) mice failed to resolve these infections. This defect was associated with suppressed antibacterial defenses, i.e., phagocyte recruitment, IgA secretion, and Muc5b expression. Whereas the FA-Tg+ mice exhibited marked mucus obstruction and Th2 responses, SHS-Tg+ mice displayed a dramatic suppression of these responses. Mechanistically, downregulated expression of IL-33, a stimulator of type II innate lymphoid cells, in lung epithelial cells was associated with suppression of neutrophil recruitment, IgA secretions, Th2 responses, and delayed bacterial clearance in SHS-Tg+ mice. Cessation of SHS exposure for 21 d restored previously suppressed responses, including phagocyte recruitment, IgA secretion, and mucous cell metaplasia. However, in contrast with FA-Tg+ mice, the SHS-Tg+ mice had pronounced epithelial necrosis, alveolar space consolidation, and lymphoid hyperplasia; indicating lagged unfavorable effects of early postnatal SHS exposure in later life. Collectively, our data show that early postnatal SHS exposure reversibly suppresses IL-33 levels in airspaces which, in turn, results in reduced neutrophil recruitment and diminished Th2 response. Our data indicate that household smoking may predispose neonates with muco-obstructive lung disease to bacterial exacerbations.
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Affiliation(s)
- Brandon W Lewis
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Razia Sultana
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Rahul Sharma
- National Hansen's Disease Program, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and
| | - Alexandra Noël
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Ingeborg Langohr
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Sonika Patial
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803.,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Arthur L Penn
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803
| | - Yogesh Saini
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803;
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Miralda I, Uriarte SM, McLeish KR. Multiple Phenotypic Changes Define Neutrophil Priming. Front Cell Infect Microbiol 2017; 7:217. [PMID: 28611952 PMCID: PMC5447094 DOI: 10.3389/fcimb.2017.00217] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/11/2017] [Indexed: 12/15/2022] Open
Abstract
Exposure to pro-inflammatory cytokines, chemokines, mitochondrial contents, and bacterial and viral products induces neutrophils to transition from a basal state into a primed one, which is currently defined as an enhanced response to activating stimuli. Although, typically associated with enhanced generation of reactive oxygen species (ROS) by the NADPH oxidase, primed neutrophils show enhanced responsiveness of exocytosis, NET formation, and chemotaxis. Phenotypic changes associated with priming also include activation of a subset of functions, including adhesion, transcription, metabolism, and rate of apoptosis. This review summarizes the breadth of phenotypic changes associated with priming and reviews current knowledge of the molecular mechanisms behind those changes. We conclude that the current definition of priming is too restrictive. Priming represents a combination of enhanced responsiveness and activated functions that regulate both adaptive and innate immune responses.
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Affiliation(s)
- Irina Miralda
- Department of Microbiology, University of Louisville School of MedicineLouisville, KY, United States
| | - Silvia M Uriarte
- Department of Microbiology, University of Louisville School of MedicineLouisville, KY, United States.,Department of Medicine, University of Louisville School of MedicineLouisville, KY, United States
| | - Kenneth R McLeish
- Department of Medicine, University of Louisville School of MedicineLouisville, KY, United States.,Robley Rex VA Medical CenterLouisville, KY, United States
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Kim DW, Cho SH. Emerging Endotypes of Chronic Rhinosinusitis and Its Application to Precision Medicine. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2017; 9:299-306. [PMID: 28497916 PMCID: PMC5446944 DOI: 10.4168/aair.2017.9.4.299] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 02/15/2017] [Accepted: 02/20/2017] [Indexed: 12/13/2022]
Abstract
Chronic rhinosinusitis (CRS) is a heterogeneous inflammatory disease with various underlying pathophysiologic mechanisms which translate to endotypes, in contrast to clinical phenotypes or histological subtypes. Defining endotypes can help clinicians predict disease prognosis, select subjects suitable for a specific therapy, and assess risks for comorbid conditions, including asthma. Therefore, with recent advancement of biologicals in CRS clinical trials, endotyping can be a breakthrough in treating recalcitrant CRS. CRS is caused by dysregulated immunologic responses to external stimuli, which induce various inflammatory mediators from inflammatory cells, including innate lymphoid cells (ILCs) and T lymphocytes as well as epithelial cells. Thymic stromal lymphopoietin (TSLP), interleukin (IL)-25, and IL-33, which are mainly secreted by epithelial cells in response to external stimuli, act on type 2 ILCs and T helper 2 (Th2) cells, inducing IL-4, IL-5, and IL-13. Local immunoglobulin E (IgE) production is also a signature event in nasal polyps (NP). These inflammatory mediators are novel potential therapeutic targets for recalcitrant CRS. This article reviews recent publications regarding endotypes and endotype-based therapeutic strategies in CRS and NP.
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Affiliation(s)
- Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Seong H Cho
- Division of Allergy and Immunology, Department of Internal Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, USA.
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Abstract
Sepsis remains a major clinical problem with high morbidity and mortality. As new inflammatory mediators are characterized, it is important to understand their roles in sepsis. Interleukin 33 (IL-33) is a recently described member of the IL-1 family that is widely expressed in cells of barrier tissues. Upon tissue damage, IL-33 is released as an alarmin and activates various types of cells of both the innate and adaptive immune system through binding to the ST2/IL-1 receptor accessory protein complex. IL-33 has apparent pleiotropic functions in many disease models, with its actions strongly shaped by the local microenvironment. Recent studies have established a role for the IL-33-ST2 axis in the initiation and perpetuation of inflammation during endotoxemia, but its roles in sepsis appear to be organism and model dependent. In this review, we focus on the recent advances in understanding the role of the IL-33/ST2 axis in sepsis.
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Affiliation(s)
- Hui Xu
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213 USA.,State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041 China
| | - Heth R Turnquist
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213 USA.,Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
| | - Rosemary Hoffman
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213 USA.,State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041 China
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213 USA
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