1
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Ouyang X, Reihill JA, Douglas LEJ, Martin SL. Airborne indoor allergen serine proteases and their contribution to sensitisation and activation of innate immunity in allergic airway disease. Eur Respir Rev 2024; 33:230126. [PMID: 38657996 PMCID: PMC11040391 DOI: 10.1183/16000617.0126-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 02/28/2024] [Indexed: 04/26/2024] Open
Abstract
Common airborne allergens (pollen, animal dander and those from fungi and insects) are the main triggers of type I allergic disorder in the respiratory system and are associated with allergic rhinitis, allergic asthma, as well as immunoglobulin E (IgE)-mediated allergic bronchopulmonary aspergillosis. These allergens promote IgE crosslinking, vasodilation, infiltration of inflammatory cells, mucosal barrier dysfunction, extracellular matrix deposition and smooth muscle spasm, which collectively cause remodelling of the airways. Fungus and insect (house dust mite and cockroaches) indoor allergens are particularly rich in proteases. Indeed, more than 40 different types of aeroallergen proteases, which have both IgE-neutralising and tissue-destructive activities, have been documented in the Allergen Nomenclature database. Of all the inhaled protease allergens, 85% are classed as serine protease activities and include trypsin-like, chymotrypsin-like and collagenolytic serine proteases. In this article, we review and compare the allergenicity and proteolytic effect of allergen serine proteases as listed in the Allergen Nomenclature and MEROPS databases and highlight their contribution to allergic sensitisation, disruption of the epithelial barrier and activation of innate immunity in allergic airways disease. The utility of small-molecule inhibitors of allergen serine proteases as a potential treatment strategy for allergic airways disease will also be discussed.
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Affiliation(s)
- Xuan Ouyang
- School of Pharmacy, Queen's University Belfast, Belfast, UK
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2
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O'Grady SM, Kita H. ATP functions as a primary alarmin in allergen-induced type 2 immunity. Am J Physiol Cell Physiol 2023; 325:C1369-C1386. [PMID: 37842751 PMCID: PMC10861152 DOI: 10.1152/ajpcell.00370.2023] [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: 08/07/2023] [Revised: 10/09/2023] [Accepted: 10/09/2023] [Indexed: 10/17/2023]
Abstract
Environmental allergens that interact with the airway epithelium can activate cellular stress pathways that lead to the release of danger signals known as alarmins. The mechanisms of alarmin release are distinct from damage-associated molecular patterns (DAMPs), which typically escape from cells after loss of plasma membrane integrity. Oxidative stress represents a form of allergen-induced cellular stress that stimulates oxidant-sensing mechanisms coupled to pathways, which facilitate alarmin mobilization and efflux across the plasma membrane. In this review, we highlight examples of alarmin release and discuss their roles in the initiation of type 2 immunity and allergic airway inflammation. In addition, we discuss the concept of alarmin amplification, where "primary" alarmins, which are directly released in response to a specific cellular stress, stimulate additional signaling pathways that lead to secretion of "secondary" alarmins that include proinflammatory cytokines, such as IL-33, as well as genomic and mitochondrial DNA that coordinate or amplify type 2 immunity. Accordingly, allergen-evoked cellular stress can elicit a hierarchy of alarmin signaling responses from the airway epithelium that trigger local innate immune reactions, impact adaptive immunity, and exacerbate diseases including asthma and other chronic inflammatory conditions that affect airway function.
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Affiliation(s)
- Scott M O'Grady
- Department of Animal Science, University of Minnesota, St. Paul, Minnesota, United States
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota, United States
| | - Hirohito Kita
- Division of Allergy, Asthma and Immunology, Mayo Clinic, Scottsdale, Arizona, United States
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3
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McDaniel MM, Lara HI, von Moltke J. Initiation of type 2 immunity at barrier surfaces. Mucosal Immunol 2023; 16:86-97. [PMID: 36642383 DOI: 10.1016/j.mucimm.2022.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 01/15/2023]
Abstract
Although seemingly unrelated, parasitic worms, venoms, and allergens all induce a type 2 immune response. The effector functions and clinical features of type 2 immunity are well-defined, but fundamental questions about the initiation of type 2 immunity remain unresolved. How are these enormously diverse type 2 stimuli first detected? How are type 2 helper T cells primed and regulated? And how do mechanisms of type 2 initiation vary across tissues? Here, we review the common themes governing type 2 immune sensing and explore aspects of T cell priming and effector reactivation that make type 2 helper T cells a unique T helper lineage. Throughout the review, we emphasize the importance of non-hematopoietic cells and highlight how the unique anatomy and physiology of each barrier tissue shape mechanisms of type 2 immune initiation.
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Affiliation(s)
- Margaret M McDaniel
- Department of Immunology, University of Washington School of Medicine, Seattle, USA.
| | - Heber I Lara
- Department of Immunology, University of Washington School of Medicine, Seattle, USA
| | - Jakob von Moltke
- Department of Immunology, University of Washington School of Medicine, Seattle, USA
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4
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Dectin-2 promotes house dust mite-skewed Th2 response through the activation of cDC2s. Cell Immunol 2022; 378:104558. [PMID: 35717749 DOI: 10.1016/j.cellimm.2022.104558] [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: 04/13/2022] [Revised: 05/27/2022] [Accepted: 06/01/2022] [Indexed: 11/20/2022]
Abstract
The role of Dectin-2 (gene symbol, Clec4n) in house dust mite (HDM) induced Th2 immune response and the exact mechanism remains controversial. In this study, we illustrated that, Clec4n-/- mice had decreased Th2 immune response following HDM challenge, which may ascribe to dramatically reduced type 2 conventional dendritic cells (cDC2s) in lung of Clec4n-/- mice, as cDC2s from lung of Clec4n-/- mice after challenging had less ability to induce Th2 response with decreased production of IL-4/IL-13. Further in vitro experiments showed the activation of Clec4n-/--BMDCs significantly decreased after HDM stimulation accompanied with decreased activation of Syk-NF-κB and Syk-JNK signal pathway. Importantly, Dectin-2 expression in PBMCs from asthmatic patients was significantly higher than that in healthy controls. Taken together, these results demonstrated that Dectin-2 could promote cDC2s activation in lung, which polarizes Th2 immune response outlining a novel mechanism of asthma development.
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5
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Fink MY, Qi X, Shirey KA, Fanaroff R, Chapoval S, Viscardi RM, Vogel SN, Keegan AD. Mice Expressing Cosegregating Single Nucleotide Polymorphisms (D298G and N397I) in TLR4 Have Enhanced Responses to House Dust Mite Allergen. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2085-2097. [PMID: 35396219 PMCID: PMC9176710 DOI: 10.4049/jimmunol.2100926] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/28/2022] [Indexed: 12/13/2022]
Abstract
Asthma is a common and ubiquitous chronic respiratory disease that is associated with airway inflammation and hyperreactivity resulting in airway obstruction. It is now accepted that asthma is controlled by a combination of host genetics and environment in a rather complex fashion; however, the link between sensing of the environment and development and exacerbation of allergic lung inflammation is unclear. Human populations expressing cosegregating D299G and T399I polymorphisms in the TLR4 gene are associated with a decreased risk for asthma in adults along with hyporesponsiveness to inhaled LPS, the TLR4 ligand. However, these data do not account for other human genetic or environmental factors. Using a novel mouse strain that expresses homologous human TLR4 polymorphisms (TLR4-single nucleotide polymorphism [SNP]), we directly tested the effect of these TLR4 polymorphisms on in vivo responses to allergens using two models of induction. We report that intact TLR4 is required for allergic inflammation when using the OVA and LPS model of induction, as cellular and pathological benchmarks were diminished in both TLR4-SNP and TLR4-deficent mice. However, in the more clinically relevant model using house dust mite extract for induction, responses were enhanced in the TLR4-SNP mice, as evidenced by greater levels of eosinophilic inflammation, Th2 cytokine production, and house dust mite-specific IgG1 production compared with wild-type mice; however, mucus production and airway hyperreactivity were not affected. These results suggest that the TLR4 polymorphic variants (genes) interact differently with the allergic stimulation (environment).
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Affiliation(s)
- Marc Y Fink
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD.,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD
| | - Xiulan Qi
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD
| | - Kari Ann Shirey
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD
| | - Rachel Fanaroff
- Department of Anatomical Pathology, University of Maryland Medical Center, Baltimore, MD
| | - Svetlana Chapoval
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD.,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD
| | - Rose M Viscardi
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD; and
| | - Stefanie N Vogel
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD
| | - Achsah D Keegan
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD; .,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD.,Maryland Health Care System, Baltimore VA Medical Center, Baltimore, MD
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6
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Heldner A, Alessandrini F, Russkamp D, Heine S, Schnautz B, Chaker A, Mwange J, Carreno Velazquez TL, Heath MD, Skinner MA, Kramer MF, Zissler UM, Schmidt‐Weber CB, Blank S. Immunological effects of adjuvanted low-dose allergoid allergen-specific immunotherapy in experimental murine house dust mite allergy. Allergy 2022; 77:907-919. [PMID: 34287971 DOI: 10.1111/all.15012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/28/2021] [Accepted: 06/16/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Native allergen extracts or chemically modified allergoids are routinely used to induce allergen tolerance in allergen-specific immunotherapy (AIT), although mechanistic side-by-side studies are rare. It is paramount to balance optimal dose and allergenicity to achieve efficacy warranting safety. AIT safety and efficacy could be addressed by allergen dose reduction and/or use of allergoids and immunostimulatory adjuvants, respectively. In this study, immunological effects of experimental house dust mite (HDM) AIT were investigated applying high-dose HDM extract and low-dose HDM allergoids with and without the adjuvants microcrystalline tyrosine (MCT) and monophosphoryl lipid A (MPL) in a murine model of HDM allergy. METHODS Cellular, humoral, and clinical effects of the different AIT strategies were assessed applying a new experimental AIT model of murine allergic asthma based on physiological, adjuvant-free intranasal sensitization followed by subcutaneous AIT. RESULTS While low-dose allergoid and high-dose extract AIT demonstrated comparable potency to suppress allergic airway inflammation and Th2-type cytokine secretion of lung-resident lymphocytes and draining lymph node cells, low-dose allergoid AIT was less effective in inducing a potentially protective IgG1 response. Combining low-dose allergoid AIT with MCT or MCT and dose-adjusted MPL promoted Th1-inducing mechanisms and robust B-cell activation counterbalancing the allergic Th2 immune response. CONCLUSION Low allergen doses induce cellular and humoral mechanisms counteracting Th2-driven inflammation by using allergoids and dose-adjusted adjuvants. In light of safety and efficacy improvement, future therapeutic approaches may use low-dose allergoid strategies to drive cellular tolerance and adjuvants to modulate humoral responses.
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Affiliation(s)
- Alexander Heldner
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Francesca Alessandrini
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Dennis Russkamp
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Sonja Heine
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Benjamin Schnautz
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Adam Chaker
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
- Department of Otolaryngology, Klinikum rechts der Isar Faculty of Medicine Technical University of Munich Munich Germany
| | | | | | | | | | - Matthias F. Kramer
- Allergy Therapeutic PLC. Worthing UK
- Bencard Allergie GmbH Munich Germany
| | - Ulrich M. Zissler
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Carsten B. Schmidt‐Weber
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
| | - Simon Blank
- Center of Allergy and Environment (ZAUM) Technical University of Munich, Faculty of Medicine and Helmholtz Center Munich German Research Center for Environmental Health Member of the German Center of Lung Research (DZL) Member of the Immunology and Inflammation Initiative of the Helmholtz AssociationMunich Germany
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7
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Kuchibhotla VNS, Starkey MR, Reid AT, Heijink IH, Nawijn MC, Hansbro PM, Knight DA. Inhibition of β-Catenin/CREB Binding Protein Signaling Attenuates House Dust Mite-Induced Goblet Cell Metaplasia in Mice. Front Physiol 2021; 12:690531. [PMID: 34385933 PMCID: PMC8353457 DOI: 10.3389/fphys.2021.690531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 07/05/2021] [Indexed: 11/26/2022] Open
Abstract
Excessive mucus production is a major feature of allergic asthma. Disruption of epithelial junctions by allergens such as house dust mite (HDM) results in the activation of β-catenin signaling, which has been reported to stimulate goblet cell differentiation. β-catenin interacts with various co-activators including CREB binding protein (CBP) and p300, thereby regulating the expression of genes involved in cell proliferation and differentiation, respectively. We specifically investigated the role of the β-catenin/CBP signaling pathway in goblet cell metaplasia in a HDM-induced allergic airway disease model in mice using ICG-001, a small molecule inhibitor that blocks the binding of CBP to β-catenin. Female 6- 8-week-old BALB/c mice were sensitized to HDM/saline on days 0, 1, and 2, followed by intranasal challenge with HDM/saline with or without subcutaneous ICG-001/vehicle treatment from days 14 to 17, and samples harvested 24 h after the last challenge/treatment. Differential inflammatory cells in bronchoalveolar lavage (BAL) fluid were enumerated. Alcian blue (AB)/Periodic acid–Schiff (PAS) staining was used to identify goblet cells/mucus production, and airway hyperresponsiveness (AHR) was assessed using invasive plethysmography. Exposure to HDM induced airway inflammation, goblet cell metaplasia and increased AHR, with increased airway resistance in response to the non-specific spasmogen methacholine. Inhibition of the β-catenin/CBP pathway using treatment with ICG-001 significantly attenuated the HDM-induced goblet cell metaplasia and infiltration of macrophages, but had no effect on eosinophils, neutrophils, lymphocytes or AHR. Increased β-catenin/CBP signaling may promote HDM-induced goblet cell metaplasia in mice.
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Affiliation(s)
- Virinchi N S Kuchibhotla
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia.,GRIAC Research Institute, University Medical Center Groningen, Groningen, Netherlands.,Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research, University of Groningen, Groningen, Netherlands
| | - Malcolm R Starkey
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre GrowUpWell and Hunter Medical Research Institute, Faculty of Health and Medicine, The University of Newcastle, Newcastle, NSW, Australia.,Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Andrew T Reid
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
| | - Irene H Heijink
- GRIAC Research Institute, University Medical Center Groningen, Groningen, Netherlands.,Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research, University of Groningen, Groningen, Netherlands.,Department of Pulmonology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Martijn C Nawijn
- GRIAC Research Institute, University Medical Center Groningen, Groningen, Netherlands.,Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research, University of Groningen, Groningen, Netherlands
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia.,Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia.,School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Darryl A Knight
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia.,Providence Health Care Research Institute, Vancouver, BC, Canada.,Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, BC, Canada
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8
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Chetty A, Nielsen HC. Targeting Airway Smooth Muscle Hypertrophy in Asthma: An Approach Whose Time Has Come. J Asthma Allergy 2021; 14:539-556. [PMID: 34079293 PMCID: PMC8164696 DOI: 10.2147/jaa.s280247] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 04/20/2021] [Indexed: 01/13/2023] Open
Abstract
Airway smooth muscle (ASM) cell dysfunction is an important component of several obstructive pulmonary diseases, particularly asthma. External stimuli such as allergens, dust, air pollutants, and change in environmental temperatures provoke ASM cell hypertrophy, proliferation, and migration without adequate mechanistic controls. ASM cells can switch between quiescent, migratory, and proliferative phenotypes in response to extracellular matrix proteins, growth factors, and other soluble mediators. While some aspects of airway hypertrophy and remodeling could have beneficial effects, in many cases these contribute to a clinical phenotype of difficult to control asthma. In this review, we discuss the factors responsible for ASM hypertrophy and proliferation in asthma, focusing on cytokines, growth factors, and ion transporters, and discuss existing and potential approaches that specifically target ASM hypertrophy to reduce the ASM mass and improve asthma symptoms. The goal of this review is to highlight strategies that appear ready for translational investigations to improve asthma therapy.
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Affiliation(s)
- Anne Chetty
- Tufts Medical Center, Tufts University, Boston, MA, USA
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9
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Dual vaccination against IL-4 and IL-13 protects against chronic allergic asthma in mice. Nat Commun 2021; 12:2574. [PMID: 33976140 PMCID: PMC8113315 DOI: 10.1038/s41467-021-22834-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 03/30/2021] [Indexed: 12/12/2022] Open
Abstract
Allergic asthma is characterized by elevated levels of IgE antibodies, type 2 cytokines such as interleukin-4 (IL-4) and IL-13, airway hyperresponsiveness (AHR), mucus hypersecretion and eosinophilia. Approved therapeutic monoclonal antibodies targeting IgE or IL-4/IL-13 reduce asthma symptoms but require costly lifelong administrations. Here, we develop conjugate vaccines against mouse IL-4 and IL-13, and demonstrate their prophylactic and therapeutic efficacy in reducing IgE levels, AHR, eosinophilia and mucus production in mouse models of asthma analyzed up to 15 weeks after initial vaccination. More importantly, we also test similar vaccines specific for human IL-4/IL-13 in mice expressing human IL-4/IL-13 and the related receptor, IL-4Rα, to find efficient neutralization of both cytokines and reduced IgE levels for at least 11 weeks post-vaccination. Our results imply that dual IL-4/IL-13 vaccination may represent a cost-effective, long-term therapeutic strategy for the treatment of allergic asthma as demonstrated in mouse models, although additional studies are warranted to assess its safety and feasibility. Asthma is caused by hyperreactivity to benign antigens, with humoral immunity orchestrated by interleukin-4 (IL-4) and IL-13 being the key etiological factor. Here the authors show, in humanized mouse models, that dual vaccination against IL-4 and IL-13 induces their durable suppression ameliorate experimental asthma, and to hint clinical translation.
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10
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Jacquet A. Characterization of Innate Immune Responses to House Dust Mite Allergens: Pitfalls and Limitations. FRONTIERS IN ALLERGY 2021; 2:662378. [PMID: 35386970 PMCID: PMC8974781 DOI: 10.3389/falgy.2021.662378] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 02/22/2021] [Indexed: 01/02/2023] Open
Abstract
Whereas house dust mite (HDM) allergy results from a dysregulated Th2-biased adaptive immune response, activation of innate immune signaling pathways is a critical prerequisite for the initiation of HDM sensitizations. Such innate sensing is mainly controlled by the airway epithelium and the skin. The resulting release of epithelial-derived proinflammatory cytokines and innate alarmins such as GM-CSF, IL-25, IL-33 and TSLP mediates the activation of ILC2 cells and cDCs to promote Th2-biased inflammation. Significant progress in the elucidation of HDM innate immune activation has been made in the past decade and highlighted key roles of the LPS/TLR4 axis, chitin-dependent pathways together with HDM protease allergens. However, the precise mechanisms by which HDM allergens are sensed by the innate immune system remain largely unknown. Such investigations are made difficult for several reasons. Among these are (1) the natural association of HDM allergens with immunostimulators from the mite exoskeleton as well as from environmental microorganisms/pollutants or endosymbiotic bacteria; (2) the purification of individual HDM allergens from extracts in sufficient amounts and devoid of any microbial and protein impurities; (3) the production of correctly folded recombinant HDM allergens which could display the same biological activity than their natural counterparts; (4) the accessibility to human epithelial samples with cellular heterogeneities and inter-donor variations; (5) the translation of experimental data from mouse models to humans is almost missing. The goal of the present mini-review is to emphasize some important limitations and pitfalls in the elucidation of innate immunostimulatory properties of HDM allergens.
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Affiliation(s)
- Alain Jacquet
- *Correspondence: Alain Jacquet ; orcid.org/0000-0002-0980-9741
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11
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Abu Khweek A, Kim E, Joldrichsen MR, Amer AO, Boyaka PN. Insights Into Mucosal Innate Immune Responses in House Dust Mite-Mediated Allergic Asthma. Front Immunol 2020; 11:534501. [PMID: 33424827 PMCID: PMC7793902 DOI: 10.3389/fimmu.2020.534501] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 09/01/2020] [Indexed: 01/09/2023] Open
Abstract
The prevalence of asthma has been rising steadily for several decades, and continues to be a major public health and global economic burden due to both direct and indirect costs. Asthma is defined as chronic heterogeneous inflammatory diseases characterized by airway obstruction, mucus production and bronchospasm. Different endotypes of asthma are being recognized based on the distinct pathophysiology, genetic predisposition, age, prognosis, and response to remedies. Mucosal innate response to environmental triggers such as pollen, cigarette smoke, fragrances, viral infection, and house dust mite (HDM) are now recognized to play an important role in allergic asthma. HDM are the most pervasive allergens that co-habitat with us, as they are ubiquitous in-house dusts, mattress and bedsheets, and feed on a diet of exfoliated human skin flakes. Dermatophagoides pteronyssinus, is one among several HDM identified up to date. During the last decade, extensive studies have been fundamental in elucidating the interactions between HDM allergens, the host immune systems and airways. Moreover, the paradigm in the field of HDM-mediated allergy has been shifted away from being solely a Th2-geared to a complex response orchestrated via extensive crosstalk between the epithelium, professional antigen presenting cells (APCs) and components of the adaptive immunity. In fact, HDM have several lessons to teach us about their allergenicity, the complex interactions that stimulate innate immunity in initiating and perpetuating the lung inflammation. Herein, we review main allergens of Dermatophagoides pteronyssinus and their interactions with immunological sentinels that promote allergic sensitization and activation of innate immunity, which is critical for the development of the Th2 biased adaptive immunity to HDM allergens and development of allergic asthma.
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Affiliation(s)
- Arwa Abu Khweek
- Department of Biology and Biochemistry, Birzeit University, Birzeit, Palestine.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Eunsoo Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Marisa R Joldrichsen
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Amal O Amer
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
| | - Prosper N Boyaka
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
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12
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Jacquet A, Robinson C. Proteolytic, lipidergic and polysaccharide molecular recognition shape innate responses to house dust mite allergens. Allergy 2020; 75:33-53. [PMID: 31166610 DOI: 10.1111/all.13940] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/05/2019] [Accepted: 05/23/2019] [Indexed: 02/06/2023]
Abstract
House dust mites (HDMs) are sources of an extensive repertoire of allergens responsible for a range of allergic conditions. Technological advances have accelerated the identification of these allergens and characterized their putative roles within HDMs. Understanding their functional bioactivities is illuminating how they interact with the immune system to cause disease and how interrelations between them are essential to maximize allergic responses. Two types of allergen bioactivity, namely proteolysis and peptidolipid/lipid binding, elicit IgE and stimulate bystander responses to unrelated allergens. Much of this influence arises from Toll-like receptor (TLR) 4 or TLR2 signalling and, in the case of protease allergens, the activation of additional pleiotropic effectors with strong disease linkage. Of related interest is the interaction of HDM allergens with common components of the house dust matrix, through either their binding to allergens or their autonomous modulation of immune receptors. Herein, we provide a contemporary view of how proteolysis, lipid-binding activity and interactions with polysaccharides and polysaccharide molecular recognition systems coordinate the principal responses which underlie allergy. The power of the catalytically competent group 1 HDM protease allergen component is demonstrated by a review of disclosures surrounding the efficacy of novel inhibitors produced by structure-based design.
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Affiliation(s)
- Alain Jacquet
- Center of Excellence in Vaccine Research and Development (Chula Vaccine Research Center-Chula VRC) Chulalongkorn University Bangkok Thailand
| | - Clive Robinson
- Institute for Infection and Immunity St George's, University of London London UK
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13
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Krysko O, Teufelberger A, Van Nevel S, Krysko DV, Bachert C. Protease/antiprotease network in allergy: The role of Staphylococcus aureus protease-like proteins. Allergy 2019; 74:2077-2086. [PMID: 30888697 DOI: 10.1111/all.13783] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/10/2019] [Accepted: 02/22/2019] [Indexed: 12/18/2022]
Abstract
Staphylococcus aureus is being recognized as a major cofactor in atopic diseases such as atopic dermatitis, chronic rhinosinusitis with nasal polyps, and asthma. The understanding of the relationship between S aureus virulence factors and the immune system is continuously improving. Although the precise mechanism of the host's immune response adaptation to the variable secretion profile of S aureus strains continues to be a matter of debate, an increasing number of studies have reported on central effects of S aureus secretome in allergy. In this review, we discuss how colonization of S aureus modulates the innate and adaptive immune response, thereby predisposing the organism to allergic sensitization and disrupting immune tolerance in the airways of patients with asthma and chronic rhinosinusitis with nasal polyps. Next, we provide a critical overview of novel concepts dealing with S aureus in the initiation and persistence of chronic rhinosinusitis with nasal polyps and asthma. The role of the S aureus serine protease-like proteins in the initiation of a type 2 response and the contribution of the IL-33/ST2 signaling axis in allergic responses induced by bacterial allergens are discussed.
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Affiliation(s)
- Olga Krysko
- Upper Airways Research Laboratory, Department Head and Skin Ghent University Ghent Belgium
| | - Andrea Teufelberger
- Upper Airways Research Laboratory, Department Head and Skin Ghent University Ghent Belgium
| | - Sharon Van Nevel
- Upper Airways Research Laboratory, Department Head and Skin Ghent University Ghent Belgium
| | - Dmitri V. Krysko
- Institute of Biology and Biomedicine National Research Lobachevsky State University of Nizhny Novgorod Nizhny Novgorod Russian Federation
- Cell Death Investigation and Therapy Laboratory, Department of Human Structure and Repair Ghent University Ghent Belgium
- Cancer Research Institute Ghent Ghent Belgium
| | - Claus Bachert
- Upper Airways Research Laboratory, Department Head and Skin Ghent University Ghent Belgium
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14
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Nordgren TM, Bailey KL, Heires AJ, Katafiasz D, Romberger DJ. Effects of Agricultural Organic Dusts on Human Lung-Resident Mesenchymal Stem (Stromal) Cell Function. Toxicol Sci 2019; 162:635-644. [PMID: 29319804 DOI: 10.1093/toxsci/kfx286] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Agricultural organic dust exposures trigger harmful airway inflammation, and workers experiencing repetitive dust exposures are at increased risk for lung disease. Mesenchymal stem/stromal cells (MSCs) regulate wound repair processes in the lung, and may contribute to either proresolution or -fibrotic lung responses. It is unknown how organic dust exposures alter lung-resident MSC activation and proinflammatory versus prorepair programs in the lung. To address this gap in knowledge, we isolated human lung-resident MSC from lung tissue. Cells were stimulated with aqueous extracts of organic dusts (DE) derived from swine confinement facilities and were assessed for changes in proliferative and migratory capacities, and production of proinflammatory and prorepair mediators. Through these investigations, we found that DE induces significant release of proinflammatory mediators TNF-α, IL-6, IL-8, and matrix metalloproteases, while also inducing the production of prorepair mediators amphiregulin, FGF-10, and resolvin D1. In addition, DE significantly reduced the growth and migratory capacities of lung-resident MSC. Together, these investigations indicate lung-resident MSC activation and wound repair activities are altered by organic dust exposures. These findings warrant future investigations to assess how organic dusts affect lung-resident mesenchymal stem/stromal cell function and impact airway inflammation, injury, and repair during agricultural aerosol exposures.
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Affiliation(s)
- Tara M Nordgren
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198.,Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California 92521
| | - Kristina L Bailey
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198.,VA Nebraska-Western Iowa Healthcare System, Omaha, Nebraska 68105
| | - Art J Heires
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Dawn Katafiasz
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Debra J Romberger
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198.,VA Nebraska-Western Iowa Healthcare System, Omaha, Nebraska 68105
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15
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Ueda Y, Nakagome K, Kobayashi T, Noguchi T, Soma T, Ohashi-Doi K, Tokuyama K, Nagata M. Dermatophagoides farinae Upregulates the Effector Functions of Eosinophils through αMβ2-Integrin and Protease-Activated Receptor-2. Int Arch Allergy Immunol 2019; 178:295-306. [PMID: 30630188 DOI: 10.1159/000495008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/31/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Even in subjects who are not sensitized to house dust mite (HDM), allergic symptoms can be aggravated by exposure to dust, suggesting that innate immune responses may be involved in these processes. Since eosinophils express pattern recognition receptors, HDM may directly upregulate eosinophil functions through these re ceptors. The objective of this study was to examine whether Dermatophagoides farinae (Df), a representative HDM, or Der f 1, a major allergen of Df, modifies the effector functions of eosinophils. METHODS Eosinophils isolated from the blood of healthy donors or allergic patients were stimulated with Df extract or Der f 1, and their adhesion to recombinant human intercellular adhesion molecule (ICAM)-1 was measured using eosinophil peroxidase assays. Generation of the eosinophil superoxide anion (O2-) was examined based on the superoxide dismutase-inhibitable reduction of cytochrome C. Eosinophil-derived neurotoxin (EDN) concentrations in cell media were measured by ELISA as a marker of degranulation. RESULTS Df extract or Der f 1 directly induced eosinophil adhesion to ICAM-1, O2- generation, and EDN release. Anti-αM- or anti-β2-integrin antibodies or protease-activated receptor (PAR)-2 antagonists suppressed the eosinophil adhesion, O2- generation, and EDN release induced by Df extract or Der f 1. Eosinophils from allergic patients showed higher adhesion to ICAM-1 than those from healthy donors. CONCLUSIONS These findings suggested that Df extract and Der f 1 directly activate eosinophil functions through αMβ2-integrin and PAR-2. Eosinophil activation by HDM may play roles in the aggravation of allergic symptoms, not only in HDM-sensitized patients, but also in nonsensitized patients.
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Affiliation(s)
- Yutaka Ueda
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan.,Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
| | - Kazuyuki Nakagome
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan, .,Allergy Center, Saitama Medical University, Saitama, Japan,
| | - Takehito Kobayashi
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
| | - Toru Noguchi
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
| | - Tomoyuki Soma
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
| | | | - Kenichi Tokuyama
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
| | - Makoto Nagata
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University, Saitama, Japan
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16
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Zhang J, Chen J, Robinson C. Cellular and Molecular Events in the Airway Epithelium Defining the Interaction Between House Dust Mite Group 1 Allergens and Innate Defences. Int J Mol Sci 2018; 19:E3549. [PMID: 30423826 PMCID: PMC6274810 DOI: 10.3390/ijms19113549] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/30/2018] [Accepted: 11/07/2018] [Indexed: 12/26/2022] Open
Abstract
Serodominant group 1 allergens of house dust mites (HDMs) are cysteine protease digestive enzymes. By increasing the detection of any allergen by dendritic antigen presenting cells, upregulating inflammatory signalling molecules, and activating cells crucial to the transition from innate to acquired immune responses, the proteolytic activity of these HDM allergens also underlies their behaviour as inhalant allergens. The significance of this property is underlined by the attenuation of allergic responses to HDMs by novel inhibitors in experimental models. The group 1 HDM allergens act as prothrombinases, enabling them to operate the canonical stimulation of protease activated receptors 1 and 4. This leads to the ligation of Toll-like receptor 4, which is an indispensable component in HDM allergy development, and reactive oxidant-regulated gene expression. Intermediate steps involve epidermal growth factor receptor ligation, activation of a disintegrin and metalloproteases, and the opening of pannexons. Elements of this transduction pathway are shared with downstream signalling from biosensors which bind viral RNA, suggesting a mechanistic linkage between allergens and respiratory viruses in disease exacerbations. This review describes recent progress in the characterisation of an arterial route which links innate responses to inhaled allergens to events underpinning the progression of allergy to unrelated allergens.
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Affiliation(s)
- Jihui Zhang
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, United Kingdom.
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Jie Chen
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, United Kingdom.
| | - Clive Robinson
- Institute for Infection & Immunity, St George's, University of London, Cranmer Terrace, London SW17 0RE, United Kingdom.
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17
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Zhang J, Chen J, Newton GK, Perrior TR, Robinson C. Allergen Delivery Inhibitors: A Rationale for Targeting Sentinel Innate Immune Signaling of Group 1 House Dust Mite Allergens through Structure-Based Protease Inhibitor Design. Mol Pharmacol 2018; 94:1007-1030. [PMID: 29976563 PMCID: PMC6064784 DOI: 10.1124/mol.118.112730] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/20/2018] [Indexed: 12/22/2022] Open
Abstract
Diverse evidence from epidemiologic surveys and investigations into the molecular basis of allergenicity have revealed that a small cadre of "initiator" allergens promote the development of allergic diseases, such as asthma, allergic rhinitis, and atopic dermatitis. Pre-eminent among these initiators are the group 1 allergens from house dust mites (HDM). In mites, group 1 allergens function as cysteine peptidase digestive enzymes to which humans are exposed by inhalation of HDM fecal pellets. Their protease nature confers the ability to activate high gain signaling mechanisms which promote innate immune responses, leading to the persistence of allergic sensitization. An important feature of this process is that the initiator drives responses both to itself and to unrelated allergens lacking these properties through a process of collateral priming. The clinical significance of group 1 HDM allergens in disease, their serodominance as allergens, and their IgE-independent bioactivities in innate immunity make these allergens interesting therapeutic targets in the design of new small-molecule interventions in allergic disease. The attraction of this new approach is that it offers a powerful, root-cause-level intervention from which beneficial effects can be anticipated by interference in a wide range of effector pathways associated with these complex diseases. This review addresses the general background to HDM allergens and the validation of group 1 as putative targets. We then discuss structure-based drug design of the first-in-class representatives of allergen delivery inhibitors aimed at neutralizing the proteolytic effects of HDM group 1 allergens, which are essential to the development and maintenance of allergic diseases.
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Affiliation(s)
- Jihui Zhang
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom (J.Z., J.C., C.R.); State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China (J.Z.); and Domainex Ltd., Chesterford Research Park, Saffron Walden, United Kingdom (G.K.N., T.R.P.)
| | - Jie Chen
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom (J.Z., J.C., C.R.); State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China (J.Z.); and Domainex Ltd., Chesterford Research Park, Saffron Walden, United Kingdom (G.K.N., T.R.P.)
| | - Gary K Newton
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom (J.Z., J.C., C.R.); State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China (J.Z.); and Domainex Ltd., Chesterford Research Park, Saffron Walden, United Kingdom (G.K.N., T.R.P.)
| | - Trevor R Perrior
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom (J.Z., J.C., C.R.); State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China (J.Z.); and Domainex Ltd., Chesterford Research Park, Saffron Walden, United Kingdom (G.K.N., T.R.P.)
| | - Clive Robinson
- Institute for Infection and Immunity, St George's, University of London, London, United Kingdom (J.Z., J.C., C.R.); State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China (J.Z.); and Domainex Ltd., Chesterford Research Park, Saffron Walden, United Kingdom (G.K.N., T.R.P.)
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18
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Hesse L, Brouwer U, Petersen AH, Gras R, Bosman L, Brimnes J, Oude Elberink JNG, van Oosterhout AJM, Nawijn MC. Subcutaneous immunotherapy suppresses Th2 inflammation and induces neutralizing antibodies, but sublingual immunotherapy suppresses airway hyperresponsiveness in grass pollen mouse models for allergic asthma. Clin Exp Allergy 2018; 48:1035-1049. [PMID: 29752757 DOI: 10.1111/cea.13169] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 03/30/2018] [Accepted: 05/01/2018] [Indexed: 01/05/2023]
Abstract
BACKGROUND Both subcutaneous and sublingual allergen immunotherapy (SCIT and SLIT) have been shown to effectively suppress allergic manifestations upon allergen exposure, providing long-term relief from symptoms in allergic disorders including allergic asthma. Clinical studies directly comparing SCIT and SLIT report a different kinetics and magnitude of immunological changes induced during treatment. Comparative studies into the mechanisms underlying immune suppression in SCIT and SLIT are lacking. OBJECTIVE We aimed to establish an experimental model for grass pollen (GP) SCIT and SLIT that would allow a head-to-head comparison of the two treatments. METHODS BALB/c mice were sensitized with GP extract, followed by SCIT and SLIT treatments with various GP dosages. Subsequently, we challenged mice with GP and measured airway responsiveness (AHR), GP-specific immunoglobulins, ear swelling tests (EST), eosinophilic inflammation in bronchoalveolar lavage fluid (BALF), and T cell cytokine release after restimulation of lung cells (IL-5, IL-10, and IL-13). RESULTS We find that SLIT treatment was able to suppress allergen-induced AHR, while allergic inflammation was not effectively suppressed even at the highest GP dose in this model. In contrast, SCIT treatment induced higher levels of GP-specific IgG1, while SLIT was superior in inducing a GP-specific IgG2a response, which was associated with increased Th1 activity in lung tissue after SLIT, but not SCIT treatment. Interestingly, SCIT was able to suppress Th2-type cytokine production in lung cell suspensions, while SLIT failed to do so. CONCLUSIONS AND CLINICAL RELEVANCE In conclusion, GP-SCIT suppresses Th2 inflammation and induced neutralizing antibodies, while GP-SLIT suppresses the clinically relevant lung function parameters in an asthma mouse model, indicating that the two application routes depend on partially divergent mechanisms of tolerance induction. Interestingly, these data mirror observations in clinical studies, underscoring the translational value of these mouse models.
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Affiliation(s)
- L Hesse
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - U Brouwer
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - A H Petersen
- Medical Biology section, Department of Pathology & Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - R Gras
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - L Bosman
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - J Brimnes
- Department of Experimental Immunology, ALK-Abelló A/S, Hørsholm, Denmark
| | - J N G Oude Elberink
- Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Division of Allergy, Department of internal medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | - A J M van Oosterhout
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GSK Medicines Research Centre, Stevenage, UK
| | - M C Nawijn
- Department of Pathology & Medical Biology, Experimental Pulmonary and Inflammatory Research (EXPIRE), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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19
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Hartl D, Tirouvanziam R, Laval J, Greene CM, Habiel D, Sharma L, Yildirim AÖ, Dela Cruz CS, Hogaboam CM. Innate Immunity of the Lung: From Basic Mechanisms to Translational Medicine. J Innate Immun 2018; 10:487-501. [PMID: 29439264 DOI: 10.1159/000487057] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 01/18/2018] [Indexed: 12/16/2022] Open
Abstract
The respiratory tract is faced daily with 10,000 L of inhaled air. While the majority of air contains harmless environmental components, the pulmonary immune system also has to cope with harmful microbial or sterile threats and react rapidly to protect the host at this intimate barrier zone. The airways are endowed with a broad armamentarium of cellular and humoral host defense mechanisms, most of which belong to the innate arm of the immune system. The complex interplay between resident and infiltrating immune cells and secreted innate immune proteins shapes the outcome of host-pathogen, host-allergen, and host-particle interactions within the mucosal airway compartment. Here, we summarize and discuss recent findings on pulmonary innate immunity and highlight key pathways relevant for biomarker and therapeutic targeting strategies for acute and chronic diseases of the respiratory tract.
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Affiliation(s)
- Dominik Hartl
- Department of Pediatrics I, Children's Hospital, University of Tübingen, Tübingen, .,Roche Pharma Research and Early Development (pRED), Immunology, Inflammation and Infectious Diseases (I3) Discovery and Translational Area, Roche Innovation Center Basel, Basel,
| | - Rabindra Tirouvanziam
- Department of Pediatrics, Emory University School of Medicine, Center for Cystic Fibrosis and Airways Disease Research, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Julie Laval
- Department of Pediatrics I, Children's Hospital, University of Tübingen, Tübingen, Germany
| | - Catherine M Greene
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - David Habiel
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Lokesh Sharma
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Ali Önder Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Neuherberg, Germany
| | - Charles S Dela Cruz
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine and Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Cory M Hogaboam
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
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20
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Stroo I, Yang J, Anas AA, de Boer JD, van Mierlo G, Roem D, Wouters D, Engel R, Roelofs JJTH, van 't Veer C, van der Poll T, Zeerleder S. Human plasma-derived C1 esterase inhibitor concentrate has limited effect on house dust mite-induced allergic lung inflammation in mice. PLoS One 2017; 12:e0186652. [PMID: 29036225 PMCID: PMC5643136 DOI: 10.1371/journal.pone.0186652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/08/2017] [Indexed: 11/18/2022] Open
Abstract
C1 esterase inhibitor (C1-INH) can inhibit multiple pathways (complement, contact-kinin, coagulation, and fibrinolysis) that are all implicated in the pathophysiology of asthma. We explored the effect of human plasma-derived C1-INH on allergic lung inflammation in a house dust mite (HDM) induced asthma mouse model by daily administration of C1-INH (15 U) during the challenge phase. NaCl and HDM exposed mice had comparable plasma C1-INH levels, while bronchoalveolar lavage fluid (BALF) levels were increased in HDM exposed mice coinciding with slightly reduced activation of complement (C5a). C1-INH treatment reduced Th2 response and enhanced HDM-specific IgG1. Influx of eosinophils in BALF or lung, pulmonary damage, mucus production, procoagulant response or plasma leakage in BALF was similar in both groups. In conclusion, C1-INH dampens Th2 responses during HDM induced allergic lung inflammation.
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Affiliation(s)
- Ingrid Stroo
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands.,Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jack Yang
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Adam A Anas
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - J Daan de Boer
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Gerard van Mierlo
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Dorina Roem
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Diana Wouters
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Ruchira Engel
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Joris J T H Roelofs
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Cornelis van 't Veer
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Sacha Zeerleder
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands.,Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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21
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Piñeiro-Hermida S, Gregory JA, López IP, Torrens R, Ruíz-Martínez C, Adner M, Pichel JG. Attenuated airway hyperresponsiveness and mucus secretion in HDM-exposed Igf1r-deficient mice. Allergy 2017; 72:1317-1326. [PMID: 28207927 DOI: 10.1111/all.13142] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Asthma is a common chronic lung disease characterized by airflow obstruction, airway hyperresponsiveness (AHR), and airway inflammation. IGFs have been reported to play a role in asthma, but little is known about how the insulin-like growth factor 1 receptor (IGF1R) affects asthma pathobiology. METHODS Female Igf1r-deficient and control mice were intranasally challenged with house dust mite (HDM) extract or PBS five days per week for four weeks. Lung function measurements, and bronchoalveolar lavage fluid (BALF), serum, and lungs were collected on day 28 for further cellular, histological, and molecular analysis. RESULTS Following HDM exposure, the control mice responded with a marked AHR and airway inflammation. The Igf1r-deficient mice exhibited an increased expression of the IGF system and surfactant genes, which were decreased in a similar manner for control and Igf1r-deficient mice after HDM exposure. On the other hand, the Igf1r-deficient mice exhibited no AHR, and a selective decrease in blood and BALF eosinophils, lung Il13 levels, collagen, and smooth muscle, as well as a significant depletion of goblet cell metaplasia and mucus secretion markers after HDM exposure. The Igf1r-deficient mice displayed a distinctly thinner epithelial layer than control mice, but this was not altered by HDM. CONCLUSIONS Herein, we demonstrate by the first time that the Igf1r plays an important role in murine asthma, mediating both AHR and mucus secretion after HDM exposure. Thus, our study identifies IGF1R as a potential therapeutic target, not only for asthma but also for hypersecretory airway diseases.
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Affiliation(s)
- S. Piñeiro-Hermida
- Lung Cancer and Respiratory Diseases Unit; Centro de Investigación Biomédica de la Rioja (CIBIR); Fundación Rioja Salud; Logroño Spain
| | - J. A. Gregory
- Unit of Experimental Asthma and Allergy Research; Karolinska Institutet; Institute of Environmental Medicine (IMM); Stockholm Sweden
| | - I. P. López
- Lung Cancer and Respiratory Diseases Unit; Centro de Investigación Biomédica de la Rioja (CIBIR); Fundación Rioja Salud; Logroño Spain
| | - R. Torrens
- Lung Cancer and Respiratory Diseases Unit; Centro de Investigación Biomédica de la Rioja (CIBIR); Fundación Rioja Salud; Logroño Spain
| | | | - M. Adner
- Unit of Experimental Asthma and Allergy Research; Karolinska Institutet; Institute of Environmental Medicine (IMM); Stockholm Sweden
| | - J. G. Pichel
- Lung Cancer and Respiratory Diseases Unit; Centro de Investigación Biomédica de la Rioja (CIBIR); Fundación Rioja Salud; Logroño Spain
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22
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Deckers J, De Bosscher K, Lambrecht BN, Hammad H. Interplay between barrier epithelial cells and dendritic cells in allergic sensitization through the lung and the skin. Immunol Rev 2017; 278:131-144. [DOI: 10.1111/imr.12542] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Julie Deckers
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
- Department of Biochemistry; Ghent University; Ghent Belgium
- Receptor Research Laboratories; Nuclear Receptor Lab; VIB Center for Medical Biotechnology; Ghent Belgium
| | - Karolien De Bosscher
- Department of Biochemistry; Ghent University; Ghent Belgium
- Receptor Research Laboratories; Nuclear Receptor Lab; VIB Center for Medical Biotechnology; Ghent Belgium
| | - Bart N Lambrecht
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
- Department of Pulmonary Medicine; Erasmus University Medical Center; Rotterdam The Netherlands
| | - Hamida Hammad
- Department of Internal Medicine; Ghent University; Ghent Belgium
- Laboratory of Immunoregulation and Mucosal Immunology; VIB Center for Inflammation Research; Ghent Belgium
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23
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Jacquet A, Campisi V, Szpakowska M, Dumez ME, Galleni M, Chevigné A. Profiling the Extended Cleavage Specificity of the House Dust Mite Protease Allergens Der p 1, Der p 3 and Der p 6 for the Prediction of New Cell Surface Protein Substrates. Int J Mol Sci 2017; 18:ijms18071373. [PMID: 28654001 PMCID: PMC5535866 DOI: 10.3390/ijms18071373] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/16/2017] [Accepted: 06/21/2017] [Indexed: 12/22/2022] Open
Abstract
House dust mite (HDM) protease allergens, through cleavages of critical surface proteins, drastically influence the initiation of the Th2 type immune responses. However, few human protein substrates for HDM proteases have been identified so far, mainly by applying time-consuming target-specific individual studies. Therefore, the identification of substrate repertoires for HDM proteases would represent an unprecedented key step toward a better understanding of the mechanism of HDM allergic response. In this study, phage display screenings using totally or partially randomized nonameric peptide substrate libraries were performed to characterize the extended substrate specificities (P5–P4′) of the HDM proteases Der p 1, Der p 3 and Der p 6. The bioinformatics interface PoPS (Prediction of Protease Specificity) was then applied to define the proteolytic specificity profile of each protease and to predict new protein substrates within the human cell surface proteome, with a special focus on immune receptors. Specificity profiling showed that the nature of residues in P1 but also downstream the cleavage sites (P′ positions) are important for effective cleavages by all three HDM proteases. Strikingly, Der p 1 and Der p 3 display partially overlapping specificities. Analysis with PoPS interface predicted 50 new targets for the HDM proteases, including 21 cell surface receptors whose extracellular domains are potentially cleaved by Der p 1, Der p 3 and/or Der p 6. Twelve protein substrate candidates were confirmed by phage ELISA (enzyme linked immunosorbent assay). This extensive study of the natural protein substrate specificities of the HDM protease allergens unveils new cell surface target receptors for a better understanding on the role of these proteases in the HDM allergic response and paves the way for the design of specific protease inhibitors for future anti-allergic treatments.
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Affiliation(s)
- Alain Jacquet
- Faculty of Medicine, Division of Research Affairs, Chulalongkorn University, 10330 Bangkok, Thailand.
| | - Vincenzo Campisi
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg.
- Laboratoire des Macromolécules Biologiques, Centre for Protein Engineering (CIP), University of Liège, 4000 Liège, Belgium.
| | - Martyna Szpakowska
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg.
| | - Marie-Eve Dumez
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg.
- Laboratoire des Macromolécules Biologiques, Centre for Protein Engineering (CIP), University of Liège, 4000 Liège, Belgium.
| | - Moreno Galleni
- Laboratoire des Macromolécules Biologiques, Centre for Protein Engineering (CIP), University of Liège, 4000 Liège, Belgium.
| | - Andy Chevigné
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg.
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van Rijt LS, Utsch L, Lutter R, van Ree R. Oxidative Stress: Promoter of Allergic Sensitization to Protease Allergens? Int J Mol Sci 2017; 18:ijms18061112. [PMID: 28545251 PMCID: PMC5485936 DOI: 10.3390/ijms18061112] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/19/2017] [Accepted: 05/19/2017] [Indexed: 01/18/2023] Open
Abstract
Allergies arise from aberrant T helper type 2 responses to allergens. Several respiratory allergens possess proteolytic activity, which has been recognized to act as an adjuvant for the development of a Th2 response. Allergen source-derived proteases can activate the protease-activated receptor-2, have specific effects on immune cells by cleaving cell membrane-bound regulatory molecules, and can disrupt tight junctions. The protease activity can induce a non-allergen-specific inflammatory response in the airways, which will set the stage for an allergen-specific Th2 response. In this review, we will discuss the evidence for the induction of oxidative stress as an underlying mechanism in Th2 sensitization to proteolytic allergens. We will discuss recent data linking the proteolytic activity of an allergen to its potential to induce oxidative stress and how this can facilitate allergic sensitization. Based on experimental data, we propose that a less proficient anti-oxidant response to allergen-induced oxidative stress contributes to the susceptibility to allergic sensitization. Besides the effect of oxidative stress on the immune response, we will also discuss how oxidative stress can increase the immunogenicity of an allergen by chemical modification.
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Affiliation(s)
- Leonie S van Rijt
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
| | - Lara Utsch
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
| | - René Lutter
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
- Department of Respiratory Medicine, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
| | - Ronald van Ree
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
- Department of Otorhinolaryngology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
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Abstract
Proteases play an important role in health and disease of the lung. In the normal lungs, proteases maintain their homeostatic functions that regulate processes like its regeneration and repair. Dysregulation of proteases–antiproteases balance is crucial in the manifestation of different types of lung diseases. Chronic inflammatory lung pathologies are associated with a marked increase in protease activities. Thus, in addition to protease activities, inhibition of anti-proteolytic control mechanisms are also important for effective microbial infection and inflammation in the lung. Herein, we briefly summarize the role of different proteases and to some extent antiproteases in regulating a variety of lung diseases.
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George T, Bell M, Chakraborty M, Siderovski DP, Giembycz MA, Newton R. Protective Roles for RGS2 in a Mouse Model of House Dust Mite-Induced Airway Inflammation. PLoS One 2017; 12:e0170269. [PMID: 28107494 PMCID: PMC5249169 DOI: 10.1371/journal.pone.0170269] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 12/30/2016] [Indexed: 12/16/2022] Open
Abstract
The GTPase-accelerating protein, regulator of G-protein signalling 2 (RGS2) reduces signalling from G-protein-coupled receptors (GPCRs) that signal via Gαq. In humans, RGS2 expression is up-regulated by inhaled corticosteroids (ICSs) and long-acting β2-adrenoceptor agonists (LABAs) such that synergy is produced in combination. This may contribute to the superior clinical efficacy of ICS/LABA therapy in asthma relative to ICS alone. In a murine model of house dust mite (HDM)-induced airways inflammation, three weeks of intranasal HDM (25 μg, 3×/week) reduced lung function and induced granulocytic airways inflammation. Compared to wild type animals, Rgs2-/- mice showed airways hyperresponsiveness (increased airways resistance and reduced compliance). While HDM increased pulmonary inflammation observed on hematoxylin and eosin-stained sections, there was no difference between wild type and Rgs2-/- animals. HDM-induced mucus hypersecretion was also unaffected by RGS2 deficiency. However, inflammatory cell counts in the bronchoalveolar lavage fluid of Rgs2-/- animals were significantly increased (57%) compared to wild type animals and this correlated with increased granulocyte (neutrophil and eosinophil) numbers. Likewise, cytokine and chemokine (IL4, IL17, IL5, LIF, IL6, CSF3, CXCLl, CXCL10 and CXCL11) release was increased by HDM exposure. Compared to wild type, Rgs2-/- animals showed a trend towards increased expression for many cytokines/chemokines, with CCL3, CCL11, CXCL9 and CXCL10 being significantly enhanced. As RGS2 expression was unaffected by HDM exposure, these data indicate that RGS2 exerts tonic bronchoprotection in HDM-induced airways inflammation. Modest anti-inflammatory and anti-remodelling roles for RGS2 are also suggested. If translatable to humans, therapies that maximize RGS2 expression may prove advantageous.
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Affiliation(s)
- Tresa George
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Matthew Bell
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Mainak Chakraborty
- Immunology Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - David P. Siderovski
- Blanchette Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, United States of America
| | - Mark A. Giembycz
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Robert Newton
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
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Lee NR, Lee JS, Baek SY, Kim DH, Gu A, Kim SY, Lee SJ, Kim IS. Effect of house dust mite on neutrophil apoptosis by cytokine secretion in lymphocytes. Mol Cell Toxicol 2017. [DOI: 10.1007/s13273-016-0041-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Stroo I, Yang J, de Boer JD, Roelofs JJTH, van 't Veer C, Castellino FJ, Zeerleder S, van der Poll T. Factor XI deficiency enhances the pulmonary allergic response to house dust mite in mice independent of factor XII. Am J Physiol Lung Cell Mol Physiol 2016; 312:L163-L171. [PMID: 27913422 DOI: 10.1152/ajplung.00320.2016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/07/2016] [Accepted: 12/01/2016] [Indexed: 12/14/2022] Open
Abstract
Asthma is associated with activation of coagulation in the airways. The coagulation system can be initiated via the extrinsic tissue factor-dependent pathway or via the intrinsic pathway, in which the central player factor XI (FXI) can be either activated via active factor XII (FXIIa) or via thrombin. We aimed to determine the role of the intrinsic coagulation system and its possible route of activation in allergic lung inflammation induced by the clinically relevant human allergen house dust mite (HDM). Wild-type (WT), FXI knockout (KO), and FXII KO mice were subjected to repeated exposure to HDM via the airways, and inflammatory responses were compared. FXI KO mice showed increased influx of eosinophils into lung tissue, accompanied by elevated local levels of the main eosinophil chemoattractant eotaxin. Although gross lung pathology and airway mucus production did not differ between groups, FXI KO mice displayed an impaired endothelial/epithelial barrier function, as reflected by elevated levels of total protein and IgM in bronchoalveolar lavage fluid. FXI KO mice had a stronger systemic IgE response with an almost completely absent HDM-specific IgG1 response. The phenotype of FXII KO mice was, except for a higher HDM-specific IgG1 response, similar to that of WT mice. In conclusion, FXI attenuates part of the allergic response to repeated administration of HDM in the airways by a mechanism that is independent of activation via FXII.
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Affiliation(s)
- Ingrid Stroo
- Center for Experimental and Molecular Medicine, University of Amsterdam, Amsterdam, the Netherlands; .,Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands; and
| | - Jack Yang
- Center for Experimental and Molecular Medicine, University of Amsterdam, Amsterdam, the Netherlands
| | - J Daan de Boer
- Center for Experimental and Molecular Medicine, University of Amsterdam, Amsterdam, the Netherlands
| | - Joris J T H Roelofs
- Department of Pathology, University of Amsterdam, Amsterdam, the Netherlands
| | - Cornelis van 't Veer
- Center for Experimental and Molecular Medicine, University of Amsterdam, Amsterdam, the Netherlands
| | - Francis J Castellino
- W.M. Keck Center for Transgene Research, University of Notre Dame, Notre Dame, Indiana
| | - Sacha Zeerleder
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands; and.,Department of Hematology, University of Amsterdam, Amsterdam, the Netherlands; and
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, University of Amsterdam, Amsterdam, the Netherlands.,Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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House dust mite allergen suppresses neutrophil apoptosis by cytokine release via PAR2 in normal and allergic lymphocytes. Immunol Res 2016; 64:123-32. [PMID: 26666432 DOI: 10.1007/s12026-015-8730-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
House dust mite (HDM) is an essential allergen in allergic diseases such as allergic rhinitis and asthma. The pathogenic mechanism of allergy is associated with cytokine release of lymphocytes and constitutive apoptosis of neutrophils. In this study, we examined whether HDM induces cytokine release of lymphocytes and whether the secretion of cytokines is involved in modulation of neutrophil apoptosis. In normal and allergic subjects, extract of Dermatophagoides pteronyssinus (DP) increased IL-6, IL-8, MCP-1, and GM-CSF secretion in a time-dependent manner. This secretion was suppressed by PAR2i, an inhibitor of PAR2, in a dose-dependent manner, as well as by LY294002, an inhibitor of PI3K, AKTi, an inhibitor of Akt, PD98059, an inhibitor of ERK, and BAY-11-7085, and an inhibitor of NF-κB. DP induced ERK and NF-κB activation in a time-dependent manner. ERK activation was suppressed by PAR2i, LY294002, and AKTi, and NF-κB activation was blocked by PAR2i, LY294002, AKTi, and PD98059. Supernatants collected from normal and allergic neutrophils after DP treatment inhibited the apoptosis of normal and allergic neutrophils through suppression of caspase 9 and caspase 3 cleavage. DP inhibited neutrophil apoptosis in coculture of normal neutrophils with normal lymphocytes, similar to the anti-apoptotic effects of DP on neutrophils alone. DP more strongly inhibited apoptosis of allergic neutrophils cocultured with allergic lymphocytes than allergic neutrophils without lymphocytes. In summary, DP induces the release of cytokines through the PAR2/PI3K/Akt/ERK/NF-κB pathway, which has anti-apoptotic effects on neutrophils of normal and allergic subjects. These results will facilitate elucidation of the pathogenic mechanism of allergic diseases.
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30
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Development of therapeutic antibodies to G protein-coupled receptors and ion channels: Opportunities, challenges and their therapeutic potential in respiratory diseases. Pharmacol Ther 2016; 169:113-123. [PMID: 27153991 DOI: 10.1016/j.pharmthera.2016.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The development of recombinant antibody therapeutics continues to be a significant area of growth in the pharmaceutical industry with almost 50 approved monoclonal antibodies on the market in the US and Europe. Therapeutic drug targets such as soluble cytokines, growth factors and single transmembrane spanning receptors have been successfully targeted by recombinant monoclonal antibodies and the development of new product candidates continues. Despite this growth, however, certain classes of important disease targets have remained intractable to therapeutic antibodies due to the complexity of the target molecules. These complex target molecules include G protein-coupled receptors and ion channels which represent a large target class for therapeutic intervention with monoclonal antibodies. Although these targets have typically been addressed by small molecule approaches, the exquisite specificity of antibodies provides a significant opportunity to provide selective modulation of these important regulators of cell function. Given this opportunity, a significant effort has been applied to address the challenges of targeting these complex molecules and a number of targets are linked to the pathophysiology of respiratory diseases. In this review, we provide a summary of the importance of GPCRs and ion channels involved in respiratory disease and discuss advantages offered by antibodies as therapeutics at these targets. We highlight some recent GPCRs and ion channels linked to respiratory disease mechanisms and describe in detail recent progress made in the strategies for discovery of functional antibodies against challenging membrane protein targets such as GPCRs and ion channels.
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31
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Saw S, Arora N. PI3K and ERK1/2 kinase inhibition potentiate protease inhibitor to attenuate allergen induced Th2 immune response in mouse. Eur J Pharmacol 2016; 776:176-84. [PMID: 26905476 DOI: 10.1016/j.ejphar.2016.02.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 12/14/2022]
Abstract
Proteases affect immune response by activating PI3K, ERK1/2 and p38 kinase. In present study, therapeutic effect of PI3K, ERK1/2 and p38 kinase inhibitor in combination with serine protease inhibitor was evaluated in cockroach extract (CE) induced airway inflammatory disease. Mice were sensitized on day 0, 7 and 14 and challenged on day 27, 28 and 29 with CE. Mice were given PI3K, ERK1/2 and the p38 kinase inhibitor (iPI3K, iERK1/2 and the ip38) alone or with serine protease inhibitor 4-(2-Aminoethyl) benzenesulfonyl fluoride hydrochloride (AEBSF), 1h before challenge. On day 30 airway resistance of mice were determined and euthanized to collect blood, BAL fluid and lung for analysis. CE immunized mice showed PI3K, ERK1/2 and p38 kinase activation, increased airway resistance, cellular infiltration, Th2 cytokines IgE and IgG1. AEBSF given to mice reduced the CE induced allergic response. AEBSF given in combination of iPI3K/iERK1/2 reduced cellular infiltration in lungs. Furthermore, iPI3K/iERK1/2 with AEBSF significantly reduced the CE induced Th2 cytokines in comparison to monotherapy of kinase inhibitor and AEBSF (P<0.05). The combination of iPI3K/iERK1/2 with AEBSF enhanced IL-12 level that could further provide a mean of Th2 reduction. Best effect in reduction of allergic response in mice was observed on administration of AEBSF with iPI3K. Conclusively, the combination of PI3K kinase inhibitor with AEBSF reduced allergen induced airway response and has therapeutic potential for add-on therapy in allergic airway disease.
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Affiliation(s)
- Sanjay Saw
- CSIR-Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India
| | - Naveen Arora
- CSIR-Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India.
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32
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Romberger DJ, Heires AJ, Nordgren TM, Souder CP, West W, Liu XD, Poole JA, Toews ML, Wyatt TA. Proteases in agricultural dust induce lung inflammation through PAR-1 and PAR-2 activation. Am J Physiol Lung Cell Mol Physiol 2015; 309:L388-99. [PMID: 26092994 DOI: 10.1152/ajplung.00025.2015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 06/09/2015] [Indexed: 01/31/2023] Open
Abstract
Workers exposed to aerosolized dust present in concentrated animal feeding operations (CAFOs) are susceptible to inflammatory lung diseases, such as chronic obstructive pulmonary disease. Extracts of dust collected from hog CAFOs [hog dust extract (HDE)] are potent stimulators of lung inflammatory responses in several model systems. The observation that HDE contains active proteases prompted the present study, which evaluated the role of CAFO dust proteases in lung inflammatory processes and tested whether protease-activated receptors (PARs) are involved in the signaling pathway for these events. We hypothesized that the damaging proinflammatory effect of HDE is due, in part, to the proteolytic activation of PARs, and inhibiting the proteases in HDE or disrupting PAR activation would attenuate HDE-mediated inflammatory indexes in bronchial epithelial cells (BECs), in mouse lung slices in vitro, and in a murine in vivo exposure model. Human BECs and mouse lung slice cultures stimulated with 5% HDE released significantly more of each of the cytokines measured (IL-6, IL-8, TNF-α, keratinocyte-derived chemokine/CXC chemokine ligand 1, and macrophage inflammatory protein-2/CXC chemokine ligand 2) than controls, and these effects were markedly diminished by protease inhibition. Inhibition of PARs also blunted the HDE-induced cytokine release from BECs. In addition, protease depletion inhibited HDE-induced BEC intracellular PKCα and PKCε activation. C57BL/6J mice administered 12.5% HDE intranasally, either once or daily for 3 wk, exhibited increased total cellular and neutrophil influx, bronchial alveolar fluid inflammatory cytokines, lung histopathology, and inflammatory scores compared with mice receiving protease-depleted HDE. These data suggest that proteases in dust from CAFOs are important mediators of lung inflammation, and these proteases and their receptors may provide novel targets for therapeutic intervention in CAFO dust-induced airways disease.
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Affiliation(s)
- Debra J Romberger
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska; Veterans Affairs Nebraska-Western Iowa Healthcare System, Omaha, Nebraska;
| | - Art J Heires
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Tara M Nordgren
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Chelsea P Souder
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - William West
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Xiang-de Liu
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jill A Poole
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - Myron L Toews
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska
| | - Todd A Wyatt
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska; Veterans Affairs Nebraska-Western Iowa Healthcare System, Omaha, Nebraska; Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center, Omaha, Nebraska; and
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33
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Tumor-specific Th2 responses inhibit growth of CT26 colon-cancer cells in mice via converting intratumor regulatory T cells to Th9 cells. Sci Rep 2015; 5:10665. [PMID: 26035423 PMCID: PMC4451845 DOI: 10.1038/srep10665] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 04/22/2015] [Indexed: 02/01/2023] Open
Abstract
The abnormality of immune regulation plays a critical role in the pathogenesis of cancer; the underlying mechanism has not been fully understood yet. This study aims to investigate the role of cancer specific T helper (Th)2 response in the inhibition of colon cancer (Cca) cell growth. The results showed that with Cca cell (CT26 cell) extracts as an antigen, the Cca-extract specific Th2 response was induced in the Cca-bearing mice. The Cca mass size was significantly reduced, or radically disappeared (5 out of 10; or 50%); the survival rate was markedly improved in mice immunized with Cca-extract, but not in those immunized with another tumor cell (U87 cell) extracts or to bovine serum albumin. The immunization with Cca-extract also induced Cca cell apoptosis and converted the intra-Cca Tregs to T helper (Th) 9 cells. In conclusion, Cca-specific Th2 responses inhibit Cca growth in a mouse model via inducing Cca cell apoptosis and converting intra-Cca Tregs to Th9 cells.
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Florsheim E, Yu S, Bragatto I, Faustino L, Gomes E, Ramos RN, Barbuto JAM, Medzhitov R, Russo M. Integrated innate mechanisms involved in airway allergic inflammation to the serine protease subtilisin. THE JOURNAL OF IMMUNOLOGY 2015; 194:4621-30. [PMID: 25876764 DOI: 10.4049/jimmunol.1402493] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 03/01/2015] [Indexed: 01/08/2023]
Abstract
Proteases are recognized environmental allergens, but little is known about the mechanisms responsible for sensing enzyme activity and initiating the development of allergic inflammation. Because usage of the serine protease subtilisin in the detergent industry resulted in an outbreak of occupational asthma in workers, we sought to develop an experimental model of allergic lung inflammation to subtilisin and to determine the immunological mechanisms involved in type 2 responses. By using a mouse model of allergic airway disease, we have defined in this study that s.c. or intranasal sensitization followed by airway challenge to subtilisin induces prototypic allergic lung inflammation, characterized by airway eosinophilia, type 2 cytokine release, mucus production, high levels of serum IgE, and airway reactivity. These allergic responses were dependent on subtilisin protease activity, protease-activated receptor-2, IL-33R ST2, and MyD88 signaling. Also, subtilisin stimulated the expression of the proallergic cytokines IL-1α, IL-33, thymic stromal lymphopoietin, and the growth factor amphiregulin in a human bronchial epithelial cell line. Notably, acute administration of subtilisin into the airways increased lung IL-5-producing type 2 innate lymphoid cells, which required protease-activated receptor-2 expression. Finally, subtilisin activity acted as a Th2 adjuvant to an unrelated airborne Ag-promoting allergic inflammation to inhaled OVA. Therefore, we established a murine model of occupational asthma to a serine protease and characterized the main molecular pathways involved in allergic sensitization to subtilisin that potentially contribute to initiate allergic airway disease.
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Affiliation(s)
- Esther Florsheim
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil; Department of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510; and
| | - Shuang Yu
- Department of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510; and
| | - Ivan Bragatto
- Department of Biochemistry, Institute of Chemistry, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil
| | - Lucas Faustino
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil
| | - Eliane Gomes
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil
| | - Rodrigo N Ramos
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil
| | - José Alexandre M Barbuto
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil
| | - Ruslan Medzhitov
- Department of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510; and
| | - Momtchilo Russo
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, 05508-000 SP Brazil;
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35
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Yoo Y, Perzanowski MS. Allergic sensitization and the environment: latest update. Curr Allergy Asthma Rep 2014; 14:465. [PMID: 25149167 DOI: 10.1007/s11882-014-0465-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The prevalence of asthma and other allergic diseases is still increasing both in developed and developing countries. Allergic sensitization against common inhalant allergens is common and, although not sufficient, a necessary step in the development of allergic diseases. Despite a small number of proteins from certain plants and animals being common allergens in humans, we still do not fully understand who will develop sensitization and to which allergens. Environmental exposure to these allergens is essential for the development of sensitization, but what has emerged clearly in the literature in the recent years is that the adjuvants to which an individual is exposed at the same time as the allergen are probably an equally important determinant of the immune response to the allergen. These adjuvants act on all steps in the development of sensitization from modifying epithelial barriers, to facilitating antigen presentation, to driving T-cell responses, to altering mast cell and basophil hyperreactivity. The adjuvants come from biogenic sources, including microbes and the plants and animals that produce the allergens, and from man-made sources (anthropogenic), including unintended by-products of combustion and chemicals now ubiquitous in modern life. As we better understand how individuals are exposed to these adjuvants and how the exposure influences the likelihood of an allergic response, we may be able to design individual and community-level interventions that will reverse the increase in allergic disease prevalence, but we are not there yet.
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Affiliation(s)
- Young Yoo
- Department of Pediatrics, College of Medicine, Korea University, Seoul, South Korea
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