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Solleti SK, Matthews BE, Rowe RK. SHIP-1 differentially regulates IgE-induced IL-10 and antiviral responses in human monocytes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.07.579109. [PMID: 38370636 PMCID: PMC10871339 DOI: 10.1101/2024.02.07.579109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
IgE-mediated stimulation of monocytes regulates multiple cellular functions including cellular maturation, cytokine release, antiviral responses, and T cell priming and differentiation. The high affinity IgE receptor, FcεRI, is closely linked to serum IgE levels and atopic disease. The signaling molecules which regulate effector functions of this receptor have been well studied in mast cells and basophils, however, less is known about the signaling components, regulatory molecules, and mechanisms downstream of receptor activation in monocytes. This study sought to identify regulators of IgE-mediated cytokine release in human monocytes. SHIP-1 was identified as a negative regulator of IgE-induced IL-10 production. It was also determined that IgE-mediated stimulation and SHIP-1 inhibition decreased antiviral IP-10 production after liposomal poly(I:C) stimulation, indicating differential regulation by SHIP-1 in IgE-driven and antiviral response pathways. Both SHIP-1 and NF-κB were activated following IgE-mediated stimulation of primary monocytes, and NF-κB activation was related to both SHIP-1 and FcεRIα expression levels in monocytes. To our knowledge this is the first study to identify a role for SHIP-1 in regulating IgE-driven responses and antiviral responses in human monocytes. Given the importance of monocytes in inflammation and immune responses, a better understanding of the signaling and regulatory mechanisms downstream of FcεRI receptor could lead to new therapeutic targets in allergic disease.
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Affiliation(s)
- Siva Kumar Solleti
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642
| | - Bailey E. Matthews
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642
| | - Regina K. Rowe
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642
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2
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罗 明, 华 山, 魏 文. [Clinical efficacy of omalizumab for treatment of moderate or severe allergic asthma in children with serum immunoglobulin E levels >1 500 IU/mL: a prospective study]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2023; 25:959-965. [PMID: 37718403 PMCID: PMC10511235 DOI: 10.7499/j.issn.1008-8830.2303102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/09/2023] [Indexed: 09/19/2023]
Abstract
OBJECTIVES To evaluate the clinical efficacy of omalizumab in the treatment of moderate or severe allergic asthma in children with serum total immunoglobulin E (IgE) levels >1 500 IU/mL. METHODS A total of 95 children with moderate or severe allergic asthma, who were treated at the Department of Respiratory Medicine in Anhui Provincial Children's Hospital from December 2020 to May 2022, were enrolled. Based on their serum total IgE levels and whether they received omalizumab treatment, they were divided into a control group (IgE >1 500 IU/mL, no omalizumab treatment), a normal treatment group (IgE levels between 30 and 1 500 IU/mL, omalizumab treatment), and an ultra-high IgE treatment group (IgE >1 500 IU/mL, omalizumab treatment). The differences in clinical characteristics, Childhood Asthma Control Test (C-ACT) scores before and after treatment, the proportion of acute attacks, IgE levels, pulmonary function indicators, and fractional exhaled nitric oxide (FeNO) concentrations were analyzed among the three groups. RESULTS At the 8th week of treatment, the normal treatment group and the ultra-high IgE treatment group had higher C-ACT scores, forced expiratory volume in first second (FEV1) as a percentage of predicted value (FEV1%pred), FEV1/forced vital capacity (FVC) ratio (FEV1/FVC), and peak expiratory flow (PEF) as a percentage of predicted value (PEF%pred), as well as a lower proportion of acute attacks and FeNO concentration compared to the control group (P<0.05). There were no statistically significant differences in the comparison of various indicators between the ultra-high IgE treatment group and the normal treatment group (P>0.05). At the 16th week of treatment, the normal treatment group and the ultra-high IgE treatment group had higher C-ACT scores and pulmonary function indicators including FEV1%pred, FEV1/FVC, PEF%pred, and forced expiratory flow at 25% vital capacity (FEF25) as a percentage of predicted value (FEF25%pred) compared to the control group (P<0.05). The proportion of acute attacks and FeNO concentration in the ultra-high IgE treatment group were lower than those in the control group (P<0.05). There were no statistically significant differences in the comparison of various indicators between the ultra-high IgE treatment group and the normal treatment group (P>0.05). CONCLUSIONS Omalizumab therapy has a certain clinical efficacy in children with moderate or severe allergic asthma and serum total IgE levels >1 500 IU/mL, with no significant difference in efficacy compared to children with serum total IgE levels between 30 and 1 500 IU/mL.
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Moñino-Romero S, Kolkhir P, Szépfalusi Z, Schoepke N, Metz M, Asero R, Ferrer M, Gimenez-Arnau A, Grattan CEH, Jakob T, Konstantinou GN, Raap U, Staubach P, Zhang K, Bindslev-Jensen C, Daschner A, Kinaciyan T, Makris M, Marrouche N, Schmid-Grendelmeier P, Sussman G, Toubi E, Maurer M, Altrichter S. In chronic spontaneous urticaria soluble FcεRI is elevated and linked to atopy and chronic inducible urticaria. Clin Transl Allergy 2023; 13:e12272. [PMID: 37488737 PMCID: PMC10314276 DOI: 10.1002/clt2.12272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023] Open
Affiliation(s)
- Sherezade Moñino-Romero
- Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
- Division of Pediatric Pulmonology, Allergy and Endocrinology, Department of Pediatrics and Adolescent Medicine, Comprehensive Center of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Pavel Kolkhir
- Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Zsolt Szépfalusi
- Division of Pediatric Pulmonology, Allergy and Endocrinology, Department of Pediatrics and Adolescent Medicine, Comprehensive Center of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Nicole Schoepke
- Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Martin Metz
- Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Riccardo Asero
- Department of Allergology, Clinica San Carlo, Paderno Dugnano, Milan, Italy
| | - Marta Ferrer
- Department of Allergy and Clinical Immunology, Clinica Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), RETIC de Asma, Reacciones Adversas y Alérgicas (ARADYAL), Pamplona, Spain
| | - Ana Gimenez-Arnau
- Department of Dermatology, Hospital Del Mar, IMIM, Universitat Autònoma y Universitat Pompeu Fabra, Barcelona, Spain
| | | | - Thilo Jakob
- Department of Dermatology and Allergology, University Medical Center Giessen and Marburg, Justus-Liebig University Gießen, Gießen, Germany
| | - George N Konstantinou
- Department of Allergy and Clinical Immunology, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Ulrike Raap
- Department of Human Medicine and Health Sciences, University Clinic of Dermatology and Allergy, University of Oldenburg, Oldenburg, Germany
| | - Petra Staubach
- Department of Dermatology, University Medical Center Mainz, Mainz, Germany
| | - Ke Zhang
- Allerdia Inc, Los Angeles, California, USA
| | - Carsten Bindslev-Jensen
- Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Alvaro Daschner
- Servicio de Alergia, Instituto de Investigación Sanitaria (IIS)-Hospital Universitario de La Princesa, Madrid, Spain
| | - Tamar Kinaciyan
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Michael Makris
- Allergy Unit, 2nd Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, "Attikon" University Hospital, Athens, Greece
| | - Nadine Marrouche
- Department of Dermatology, Norfolk and Norwich University Hospital, Norwich, UK
| | - Peter Schmid-Grendelmeier
- Allergy Unit, Department of Dermatology, University Hospital, Zürich, Switzerland
- Christine Kühne Center for Allergy Research and Education CK-CARE, Davos, Switzerland
| | - Gordon Sussman
- Division of Allergy and Clinical Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Elias Toubi
- Faculty of Medicine, Bnai-Zion Medical Center, Haifa, Israel
| | - Marcus Maurer
- Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Sabine Altrichter
- Department of Dermatology and Venerology, Kepler University Hospital, Linz, Austria
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Bitting K, Hedgespeth B, Ehrhardt-Humbert LC, Arthur GK, Schubert AG, Bradding P, Tilley SL, Cruse G. Identification of redundancy between human FcεRIβ and MS4A6A proteins points toward additional complex mechanisms for FcεRI trafficking and signaling. Allergy 2023; 78:1204-1217. [PMID: 36424895 PMCID: PMC10159887 DOI: 10.1111/all.15595] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Allergic diseases are triggered by signaling through the high-affinity IgE receptor, FcεRI. In both mast cells (MCs) and basophils, FcεRI is a tetrameric receptor complex comprising a ligand-binding α subunit (FcεRIα), a tetraspan β subunit (FcεRIβ, MS4A2) responsible for trafficking and signal amplification, and a signal transducing dimer of single transmembrane γ subunits (FcεRIγ). However, FcεRI also exists as presumed trimeric complexes that lack FcεRIβ and are expressed on several cell types outside the MC and basophil lineages. Despite known differences between humans and mice in the presence of the trimeric FcεRI complex, questions remain as to how it traffics and whether it signals in the absence of FcεRIβ. We have previously reported that targeting FcεRIβ with exon-skipping oligonucleotides eliminates IgE-mediated degranulation in mouse MCs, but equivalent targeting in human MCs was not effective at reducing degranulation. RESULTS Here, we report that the FcεRIβ-like protein MS4A6A exists in human MCs and compensates for FcεRIβ in FcεRI trafficking and signaling. Human MS4A6A promotes surface expression of FcεRI complexes and facilitates degranulation. MS4A6A and FcεRIβ are encoded by highly related genes within the MS4A gene family that cluster within the human gene loci 11q12-q13, a region linked to allergy and asthma susceptibility. CONCLUSIONS Our data suggest the presence of either FcεRIβ or MS4A6A is sufficient for degranulation, indicating that MS4A6A could be an elusive FcεRIβ-like protein in human MCs that performs compensatory functions in allergic disease.
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Affiliation(s)
- Katie Bitting
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
| | - Barry Hedgespeth
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
| | - Lauren C. Ehrhardt-Humbert
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
| | - Greer K. Arthur
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
| | - Alicia G. Schubert
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
| | - Peter Bradding
- Department of Respiratory Sciences, University of Leicester, Glenfield Hospital, Leicester, LE3 9QP, UK
| | - Stephen L. Tilley
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Glenn Cruse
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, NC State University. Raleigh, NC 27607, USA
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Suprun M, Kearney P, Hayward C, Butler H, Getts R, Sicherer SH, Turner PJ, Campbell DE, Sampson HA. Predicting probability of tolerating discrete amounts of peanut protein in allergic children using epitope-specific IgE antibody profiling. Allergy 2022; 77:3061-3069. [PMID: 35960650 DOI: 10.1111/all.15477] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND IgE-epitope profiling can accurately diagnose clinical peanut allergy. OBJECTIVE We sought to determine whether sequential (linear) epitope-specific IgE (ses-IgE) profiling can provide probabilities of tolerating discrete doses of peanut protein in allergic subjects undergoing double-blind, placebo-controlled food challenges utilizing PRACTALL dosing. METHODS Sixty four ses-IgE antibodies were quantified in blood samples using a bead-based epitope assay. A pair of ses-IgEs that predicts Cumulative Tolerated Dose (CTD) was determined using regression in 75 subjects from the discovery cohort. This epitope-based predictor was validated on 331 subjects from five independent cohorts (ages 4-25 years). Subjects were grouped based on their predicted values and probabilities of reactions at each CTD threshold were calculated. RESULTS In discovery, an algorithm using two ses-IgE antibodies was correlated with CTDs (rho = 0.61, p < .05); this correlation was 0.51 (p < .05) in validation. Using the ses-IgE-based predictor, subjects were assigned into "high," "moderate," or "low" dose-reactivity groups. On average, subjects in the "high" group were four times more likely to tolerate a specific dose, compared with the "low" group. For example, predicted probabilities of tolerating 4, 14, 44, and 144 or 444 mg in the "low" group were 92%, 77%, 53%, 29%, and 10% compared with 98%, 95%, 94%, 88%, and 73% in the "high" group. CONCLUSIONS Accurate predictions of food challenge thresholds are complex due to factors including limited responder sample sizes at each dose and variations in study-specific challenge protocols. Despite these limitations, an epitope-based predictor was able to accurately identify CTDs and may provide a useful surrogate for peanut challenges.
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Affiliation(s)
- Maria Suprun
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | | | | | - Scott H Sicherer
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Paul J Turner
- National Heart & Lung Institute, Imperial College London, England, UK
| | | | - Hugh A Sampson
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Cohen B, Oprea Y, Rosenstreich D, Ferastraoaru D. Skin Testing Is Useful in Assessing Aeroallergen Sensitization in IgE Deficient Patients with Environmental Allergy-Like Symptoms. Am J Rhinol Allergy 2022; 36:451-458. [PMID: 35060394 DOI: 10.1177/19458924211073850] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
BACKGROUND The value of aeroallergen skin testing is not known in IgE deficient individuals (IgE<2.5 kU/L). OBJECTIVE To investigate the utility of skin prick (SPT), intradermal skin testing (IDST) and measuring serum specific IgE (ssIgE) in IgE deficient patients presenting with environmental allergy-like symptoms. METHODS Individuals with IgE deficiency who had both SPT and IDST performed between 2010 to 2020 were matched (age and gender) to three different groups of non-IgE deficient patients with IgE≥2.5 kU/L (normal IgE [2.5 ≤ IgE<100], high IgE [100≤IgE<1000] and very high IgE levels [≥1000 kU/L]) who also had skin testing performed for evaluation of environmental allergy-like symptoms. RESULTS Among 34 IgE deficient patients who completed SPT and IDST, 52.9% (18/34) had at least one positive skin test (4 ± 3 positive tests/patient), compared with 91.2% in those with normal, 94.1% with high or 97.1% with very high IgE levels (p < 0.01). In contrast, only one of the IgE deficient patients had detectable ssIgE, while ssIgE levels were significantly higher in all other IgE subgroups. Allergic immunotherapy was prescribed for 22.2% of the IgE-deficient patients with positive skin tests, similar to those with normal (2/31, 6.5%, p = 0.21), high IgE (9/32, 28.1%, p = 0.25) and very high IgE levels (8/33, 23.5%, p = 0.07), with similar efficacy in their symptoms control. CONCLUSION Individuals with IgE deficiency may present with environmental allergy-like symptoms. A combination of SPT and IDST is useful for diagnosing aeroallergen sensitizations in these patients, indicating the presence of skin mast cell-bound IgE in some of these individuals, despite very low serum IgE levels. Further studies are needed to assess the exact significance of positive skin tests and the benefits of immunotherapy in this group.
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Affiliation(s)
- Barrie Cohen
- Rutgers Robert Wood Johnson Medical School / Robert Wood Johnson Barnabas Health, Somerset, New Jersey, USA
| | - Yasmine Oprea
- Albert Einstein College of Medicine / Montefiore Medical Center, Bronx, NY, USA
| | - David Rosenstreich
- Albert Einstein College of Medicine / Montefiore Medical Center, Bronx, NY, USA
| | - Denisa Ferastraoaru
- Albert Einstein College of Medicine / Montefiore Medical Center, Bronx, NY, USA
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Tontini C, Bulfone-Paus S. Novel Approaches in the Inhibition of IgE-Induced Mast Cell Reactivity in Food Allergy. Front Immunol 2021; 12:613461. [PMID: 34456900 PMCID: PMC8387944 DOI: 10.3389/fimmu.2021.613461] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 06/23/2021] [Indexed: 01/21/2023] Open
Abstract
Allergy is an IgE-dependent type-I hypersensitivity reaction that can lead to life-threatening systemic symptoms such as anaphylaxis. In the pathogenesis of the allergic response, the common upstream event is the binding of allergens to specific IgE, inducing cross-linking of the high-affinity FcεRI on mast cells, triggering cellular degranulation and the release of histamine, proteases, lipids mediators, cytokines and chemokines with inflammatory activity. A number of novel therapeutic options to curb mast cell activation are in the pipeline for the treatment of severe allergies. In addition to anti-IgE therapy and allergen-specific immunotherapy, monoclonal antibodies targeted against several key Th2/alarmin cytokines (i.e. IL-4Rα, IL-33, TSLP), active modification of allergen-specific IgE (i.e. inhibitory compounds, monoclonal antibodies, de-sialylation), engagement of inhibitory receptors on mast cells and allergen-specific adjuvant vaccines, are new promising options to inhibit the uncontrolled release of mast cell mediators upon allergen exposure. In this review, we critically discuss the novel approaches targeting mast cells limiting allergic responses and the immunological mechanisms involved, with special interest on food allergy treatment.
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Affiliation(s)
- Chiara Tontini
- Lydia Becker Institute for Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Silvia Bulfone-Paus
- Lydia Becker Institute for Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
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Santos AF, Alpan O, Hoffmann H. Basophil activation test: Mechanisms and considerations for use in clinical trials and clinical practice. Allergy 2021; 76:2420-2432. [PMID: 33475181 DOI: 10.1111/all.14747] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022]
Abstract
The basophil activation test (BAT) is a functional assay that measures the degree of degranulation following stimulation with allergen or controls by flow cytometry. It correlates directly with histamine release. From the dose-response curve resulting from BAT in allergic patients, basophil reactivity (%CD63+ basophils) and basophil sensitivity (EC50 or similar) are the main outcomes of the test. BAT takes into account all characteristics of IgE and allergen and thus can be more specific than sensitization tests in the diagnosis of allergic disease. BAT reduces the need for in vivo procedures, such as intradermal tests and allergen challenges, which can cause allergic reactions of unpredictable severity. As it closely reflects the patients' phenotype in most cases, it may be used to support the diagnosis of food, venom and drug allergies and chronic urticaria, to monitor the natural resolution of food allergies and to predict and monitor clinical the response to immunomodulatory treatments, such as allergen-specific immunotherapy and biologicals. Clinical application of BAT requires analytical validation, clinical validation, standardization of procedures and quality assurance to ensure reproducibility and reliability of results. Currently, efforts are ongoing to establish a platform that could be used by laboratories in Europe and in the USA for quality assurance and certification.
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Affiliation(s)
- Alexandra F. Santos
- Department of Women and Children's Health (Pediatric Allergy) School of Life Course Sciences Faculty of Life Sciences and Medicine King's College London London UK
- Peter Gorer Department of Immunobiology School of Immunology and Microbial Sciences King's College London London UK
- Asthma UK Centre in Allergic Mechanisms of Asthma London UK
- Children's Allergy ServiceEvelina London Children's HospitalGuy's and St Thomas' Hospital London UK
| | | | - Hans‐Jürgen Hoffmann
- Department of Clinical Medicine Aarhus University Aarhus Denmark
- Department of Respiratory Diseases and Allergy Aarhus University Hospital Aarhus Denmark
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Hemmings O, Niazi U, Kwok M, James LK, Lack G, Santos AF. Peanut diversity and specific activity are the dominant IgE characteristics for effector cell activation in children. J Allergy Clin Immunol 2021; 148:495-505.e14. [PMID: 33675817 PMCID: PMC8340728 DOI: 10.1016/j.jaci.2021.02.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 02/04/2021] [Accepted: 02/18/2021] [Indexed: 11/29/2022]
Abstract
Background IgE mediates allergic reactions to peanut; however, peanut-specific IgE (sIgE) levels do not always equate to clinical peanut allergy. Qualitative differences between sIgE of peanut-sensitized but tolerant (PS) and peanut-allergic (PA) individuals may be important. Objective We sought to assess the influence of IgE characteristics on effector cell activation in peanut allergy. Methods A cohort of 100 children was studied. The levels of IgE to peanut and peanut components were measured. Specific activity (SA) was estimated as the ratio of allergen-sIgE to total IgE. Avidity was measured by ImmunoCAP with sodium thiocyanate. IgE diversity was calculated on the basis of ImmunoCAP-Immuno Solid-phase Allergen Chip assays for 112 allergens or for 6 peanut allergens. Whole-blood basophils and mast cell line Laboratory of Allergic Diseases 2 sensitized with patients’ plasma were stimulated with peanut or controls and assessed by flow cytometry. Results SA to peanut (P < .001), Ara h 1 (P = .004), Ara h 2 (P < .001), Ara h 3 (P = .02), and Ara h 6 (P < .001) and the avidity of peanut-sIgE (P < .001) were higher in PA than in PS individuals. Diversity for peanut allergens was greater in PA individuals (P < .001). All IgE characteristics were correlated with basophil and mast cell activation. Peanut SA (R = 0.447) and peanut diversity (R = 0.440) had the highest standardized β-coefficients in combined multivariable regression models (0.447 and 0.440, respectively). Conclusions IgE specificity, SA, avidity, and peanut diversity were greater in PA than in PS individuals. IgE peanut SA and peanut diversity had the greatest influence on effector cell activation and could be used clinically.
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Affiliation(s)
- Oliver Hemmings
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom; Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Umar Niazi
- Guy's and St Thomas' National Health Service Foundation Trust and King's College London National Institute for Health Research Biomedical Research Centre Translational Bioinformatics Platform, Guy's Hospital, London, United Kingdom
| | - Matthew Kwok
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom; Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Louisa K James
- Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - Gideon Lack
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom; Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Alexandra F Santos
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom; Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, United Kingdom.
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10
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The other side of the coin: IgE deficiency, a susceptibility factor for malignancy occurrence. World Allergy Organ J 2021; 14:100505. [PMID: 33664932 PMCID: PMC7887422 DOI: 10.1016/j.waojou.2020.100505] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/16/2020] [Accepted: 12/29/2020] [Indexed: 12/03/2022] Open
Abstract
Since the discovery of IgE, almost all attention was given to conditions with elevated specific or total IgE levels such as atopy, type I hypersensitivity reactions, or parasitic infestations. Recent prospective and retrospective studies show that having very low IgE levels, such as those seen in IgE deficiency (IgE<2.5 kU/L), is not without clinical consequences. Patients with ultra-low IgE levels have an elevated risk of cancer of any type. These results are in agreement with murine models research which demonstrated that grafted tumors grow faster and bigger on an IgE knockout background. The novel finding that IgE deficiency is a susceptibility factor for cancer, fits very well with the AllergoOncology concept. The reports on a beneficial, cytotoxic function of IgE, in cooperation with its high (FcεRI) and low (FcεRII, CD23) affinity IgE receptors resulting in tumor cell phagocytosis, propose a role of IgE in cancer surveillance. It appears that not only deficiency of serum IgE, but also lack of tissue-bound IgE is important in malignancy susceptibility in these patients. As such, IgE deficient individuals with absent serum and cell-bound IgE as suggested by negative type I hypersensitivity skin tests, are at the highest risk for a malignancy diagnosis. In contrast, IgE deficient individuals with cell-bound IgE depicted through positive type I hypersensitivity skin tests, have lower rates of malignancy diagnosis. The present report discusses the evidence and potential role of ultra-low IgE as a novel biomarker for cancer susceptibility.
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Aryani A, Suprayitno E, Sasmito BB, Hardoko H. Characterization and identification of charcoal of inedible Kerandang fish ( Channa pleurophthalmus Blkr) body parts and potential antiallergenic properties. Vet World 2020; 13:1480-1486. [PMID: 32848327 PMCID: PMC7429384 DOI: 10.14202/vetworld.2020.1480-1486] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/05/2020] [Indexed: 11/16/2022] Open
Abstract
Background and Aim The study about the antiallergenic properties of inedible fish body parts is still limited. Therefore, this study aimed to characterize the charcoal from the body parts of Kerandang fish (Channa pleurophthalmus Blkr) and identify its antiallergenic properties. Materials and Methods This study used some non-edible body parts extracted from the Kerandang fish (i.e., the scalp, scales, and dorsal, pectoral, ventral, anal, and caudal fins) using a maceration method with different solvents (ethanol, ethyl acetate, and chloroform). The identification of active compounds in the extract was carried out using liquid chromatography-high-resolution mass spectrometry (LC-HRMS) analysis, while the antihyaluronidase activity was determined using the antihyaluronidase test. The highest charcoal antihyaluronidase activity-extract was applied to ovalbumin-induced mice for 7 days with various doses (10, 15, and 20 mg/kg). The specific immunoglobulin E (IgE) was measured using enzyme-linked immunosorbent assay on day 8. Results Our LC-HRMS analysis showed that the active compound of charcoal in the caudal fins of Kerandang fish was hexadecanamide. The highest inhibition (IC50) of hyaluronidase was found in the ethyl acetate extract of fish caudal fins at a concentration of 4 mg/mL. We found that 15 mg/kg body weight of charcoal of fish caudal fins suppressed IgE expression in male mice. Conclusion Our findings indicate that the charcoal of non-edible body parts of Kerandang and one of its constituent, hexadecanamide, may have strong antiallergic effects.
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Affiliation(s)
- Aryani Aryani
- Doctoral Program, Faculty of Fisheries and Marine Sciences, Brawijaya University, Malang 65145, East Java, Indonesia
| | - Eddy Suprayitno
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Sciences, Brawijaya University, Malang 65145, East Java, Indonesia
| | - Bambang Budi Sasmito
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Sciences, Brawijaya University, Malang 65145, East Java, Indonesia
| | - Hardoko Hardoko
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Sciences, Brawijaya University, Malang 65145, East Java, Indonesia
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12
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Qiu C, Zhong L, Huang C, Long J, Ye X, Wu J, Dai W, Lv W, Xie C, Zhang J. Cell-bound IgE and plasma IgE as a combined clinical diagnostic indicator for allergic patients. Sci Rep 2020; 10:4700. [PMID: 32170187 PMCID: PMC7069990 DOI: 10.1038/s41598-020-61455-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 02/27/2020] [Indexed: 12/31/2022] Open
Abstract
Allergic responses are mainly caused by IgE, which is often located on the cell surface. The current diagnostic method detects both allergen-specific IgE and total IgE levels, but a number of allergic patients have a normal serum IgE level, which is a poor clinical correlate for allergy. Here, we developed a simple method to detect the level of cell-bound IgE by dissociating it from blood cells with lactic acid. Dissociated cell-bound IgE and plasma IgE levels were detected using the same ELISA kit at the same time. We established two clinical cohorts: an allergic patient group and a healthy participant group. In general, cell-bound IgE correlated well with plasma IgE; however, some patients exhibited high cell-bound IgE levels but low plasma IgE levels. We recommended 350 ng/mL peripheral blood total IgE (cell-bound IgE + plasma IgE) as the cut-off value for allergy diagnosis. Using this indicator, 90.32% of our allergic patients were correctly diagnosed. The peripheral blood total IgE level is a promising clinical diagnostic indicator in allergic patients and will provide more guidance for allergy diagnosis and therapeutic evaluation.
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Affiliation(s)
- Chuanghua Qiu
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Lihong Zhong
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Chunxiu Huang
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Jia Long
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Xuejun Ye
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
- Shenzhen Immunotherapy Biotechnology Co., Ltd, Shenzhen, Guangdong, 518109, China
| | - Jingbo Wu
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Wenjie Dai
- Medical Research Center, Yuebei People's Hospital, Shaoguan, Guangdong, 512026, China
| | - Wei Lv
- Shenzhen University General Hospital, Shenzhen, Guangdong, 518035, China
| | - Chongwei Xie
- Medical Research Center, Yuebei People's Hospital, Shaoguan, Guangdong, 512026, China.
| | - Junfang Zhang
- Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, College of Life Sciences and Oceanography Shenzhen University, Shenzhen, Guangdong, 518035, China.
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13
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Allergen-specific IgE levels and the ability of IgE-allergen complexes to cross-link determine the extent of CD23-mediated T-cell activation. J Allergy Clin Immunol 2019; 145:958-967.e5. [PMID: 31775017 PMCID: PMC7104374 DOI: 10.1016/j.jaci.2019.11.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 10/15/2019] [Accepted: 11/08/2019] [Indexed: 12/19/2022]
Abstract
Background CD23 mediates IgE-facilitated allergen presentation and subsequent allergen-specific T-cell activation in allergic patients. Objective We sought to investigate key factors regulating IgE-facilitated allergen presentation through CD23 and subsequent T-cell activation. Methods To study T-cell activation by free allergens and different types of IgE–Bet v 1 complexes, we used a molecular model based on monoclonal human Bet v 1–specific IgE, monomeric and oligomeric Bet v 1 allergen, an MHC-matched CD23-expressing B-cell line, and a T-cell line expressing a human Bet v 1–specific T-cell receptor. The ability to cross-link Fcε receptors of complexes consisting of either IgE and monomeric Bet v 1 or IgE and oligomeric Bet v 1 was studied in human FcεRI-expressing basophils. T-cell proliferation by monomeric or oligomeric Bet v 1, which cross-links Fcε receptors to a different extent, was studied in allergic patients’ PBMCs with and without CD23-expressing B cells. Results In our model non–cross-linking IgE–Bet v 1 monomer complexes, as well as cross-linking IgE–Bet v 1 oligomer complexes, induced T-cell activation, which was dependent on the concentration of specific IgE. However, T-cell activation by cross-linking IgE–Bet v 1 oligomer complexes was approximately 125-fold more efficient. Relevant T-cell proliferation occurred in allergic patients’ PBMCs only in the presence of B cells, and its magnitude depended on the ability of IgE–Bet v 1 complexes to cross-link CD23. Conclusion The extent of CD23-mediated T-cell activation depends on the concentration of allergen-specific IgE and the cross-linking ability of IgE-allergen complexes.
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14
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Leffler J, Read JF, Jones AC, Mok D, Hollams EM, Laing IA, Le Souef PN, Sly PD, Kusel MMH, de Klerk NH, Bosco A, Holt PG, Strickland DH. Progressive increase of FcεRI expression across several PBMC subsets is associated with atopy and atopic asthma within school-aged children. Pediatr Allergy Immunol 2019; 30:646-653. [PMID: 30985951 DOI: 10.1111/pai.13063] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Antigen-specific IgE binds the Fcε receptor I (FcεRI) expressed on several types of immune cells, including dendritic cells (DCs). Activation of FcεRI on DCs in atopics has been shown to modulate immune responses that potentially contribute to asthma development. However, the extent to which DC subsets differ in FcεRI expression between atopic children with or without asthma is currently not clear. This study aimed to analyse the expression of FcεRI on peripheral blood mononuclear cells (PBMCs) from atopic children with and without asthma, and non-atopic/non-asthmatic age-matched healthy controls. METHODS We performed multiparameter flow cytometry on PBMC from 391 children across three community cohorts and one clinical cohort based in Western Australia. RESULTS We confirmed expression of FcεRI on basophils, monocytes, plasmacytoid and conventional DCs, with higher proportions of all cell populations expressing FcεRI in atopic compared to non-atopic children. Further, we observed that levels of FcεRI expression were elevated across plasmacytoid and conventional DC as well as basophils in atopic asthmatic compared to atopic non-asthmatic children also after adjusting for serum IgE levels. CONCLUSION Our data suggest that the expression pattern of FcεRI on DC and basophils differentiates asthmatic from non-asthmatic atopic children. Given the significant immune modulatory effects observed as a consequence of FcεRI expression, this altered expression pattern is likely to contribute to asthma pathology in children.
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Affiliation(s)
- Jonatan Leffler
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - James F Read
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia.,School of Medicine, University of Western Australia, Nedlands, Western Australia, Australia
| | - Anya C Jones
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia.,School of Medicine, University of Western Australia, Nedlands, Western Australia, Australia
| | - Danny Mok
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - Elysia M Hollams
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - Ingrid A Laing
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia.,School of Medicine, University of Western Australia, Nedlands, Western Australia, Australia
| | - Peter N Le Souef
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia.,School of Medicine, University of Western Australia, Nedlands, Western Australia, Australia
| | - Peter D Sly
- Child Health Research Centre, University of Queensland, Brisbane, Queensland, Australia
| | - Merci M H Kusel
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - Nicholas H de Klerk
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - Anthony Bosco
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
| | - Patrick G Holt
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia.,Child Health Research Centre, University of Queensland, Brisbane, Queensland, Australia
| | - Deborah H Strickland
- Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia
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15
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León MA, Palma C, Hernández C, Sandoval M, Cofre C, Perez-Mateluna G, Borzutzky A, Harris PR, Serrano CA. Helicobacter pylori pediatric infection changes FcεRI expression in dendritic cells and Treg profile in vivo and in vitro. Microbes Infect 2019; 21:449-455. [PMID: 31128278 DOI: 10.1016/j.micinf.2019.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/15/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023]
Abstract
H. pylori infection shows an inverse relationship with allergies. Dendritic cells regulate mucosal immune responses including the induction of T regulatory cells which are fundamental in Helicobacter pylori-induced dampening of allergies. In this respect expression of high-affinity IgE receptor (FcεRI) has been associated with a regulatory dendritic cell profile. Therefore we aimed to evaluate possible mechanisms by which H. pylori infection might modify atopy in pediatric patients. Here we show that H. pylori-infected children exhibited both increased expression of FcεRI on peripheral myeloid and plasmacytoid dendritic cells and higher levels of Foxp3 and Latency Associated Peptide on T regulatory cells. Moreover, exposure to H. pylori drove increased FcεRI expression and IL-10 secretion by both pediatric H. pylori-exposed monocyte derived dendritic cells and T cells. Finally, we show a positive correlation between expression of FcεRI in circulating myeloid DCs and total Treg cells, suggesting that in children, H. pylori infection may have a modulating role in atopy, mediated by both altered surface expression of FcεRI on children's DC and an increased T regulatory cell profile.
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Affiliation(s)
- Miguel A León
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Camila Palma
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Caroll Hernández
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mauricio Sandoval
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Colomba Cofre
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Guillermo Perez-Mateluna
- Department of Pediatric Infectious Diseases and Immunology, Millennium Institute on Immunology and Immunotherapy, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arturo Borzutzky
- Department of Pediatric Infectious Diseases and Immunology, Millennium Institute on Immunology and Immunotherapy, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Paul R Harris
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina A Serrano
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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16
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Narasimhan PB, Marcovecchio P, Hamers AA, Hedrick CC. Nonclassical Monocytes in Health and Disease. Annu Rev Immunol 2019; 37:439-456. [DOI: 10.1146/annurev-immunol-042617-053119] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Monocytes are innate blood cells that maintain vascular homeostasis and are early responders to pathogens in acute infections. There are three well-characterized classes of monocytes: classical (CD14+CD16−in humans and Ly6Chiin mice), intermediate (CD14+CD16+in humans and Ly6C+Treml4+in mice), and nonclassical (CD14−CD16+in humans and Ly6Cloin mice). Classical monocytes are critical for the initial inflammatory response. Classical monocytes can differentiate into macrophages in tissue and can contribute to chronic disease. Nonclassical monocytes have been widely viewed as anti-inflammatory, as they maintain vascular homeostasis. They are a first line of defense in recognition and clearance of pathogens. However, their roles in chronic disease are less clear. They have been shown to be protective as well as positively associated with disease burden. This review focuses on the state of the monocyte biology field and the functions of monocytes, particularly nonclassical monocytes, in health and disease.
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Affiliation(s)
- Prakash Babu Narasimhan
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Paola Marcovecchio
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Anouk A.J. Hamers
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Catherine C. Hedrick
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
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17
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18
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Sousa L, Martín-Sierra C, Pereira C, Loureiro G, Tavares B, Pedreiro S, Martinho A, Paiva A. Subcutaneous immunotherapy induces alterations in monocytes and dendritic cells homeostasis in allergic rhinitis patients. Allergy Asthma Clin Immunol 2018; 14:45. [PMID: 30459816 PMCID: PMC6236941 DOI: 10.1186/s13223-018-0271-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/14/2018] [Indexed: 02/07/2023] Open
Abstract
Background Specific subcutaneous immunotherapy (SCIT) can achieve long-term remission in patients with allergic rhinitis (AR) through complex and still unknown mechanisms. The aim of this study is to evaluate the effect of SCIT over CD16+ and CD16− monocytes, myeloid (mDCs) and plasmacytoid dendritic cells (pDCs) in patients with AR, comparatively to pharmacological standard treatment (non-SIT). Methods The relative frequency and absolute number of monocytes and DC subsets, the frequency of these cells producing TNFα after in vitro stimulation with Dermatophagoides pteronyssinus (Dpt) extract, and the expression levels of receptor-bound IgE or IgG were assessed by flow cytometry, in peripheral blood samples from 23 healthy individuals (HG) and 43 participants with AR mono-sensitized to Dpt; 10 with non-SIT treatment and 33 under SCIT, just before (SCIT-T0) and 4 h after administration (SCIT-T4). Moreover, IFNα mRNA expression was evaluated in purified pDCs, by qRT-PCR. Results After SCIT administration we observed a strong decrease of circulating pDCs, although accompanied by higher levels of IFNα mRNA expression, and an increase of circulating CD16+ monocytes. AR participants under SCIT exhibited a higher expression of receptor-bound IgE in all cell populations that expressed the high affinity receptor for IgE (FcεRI) and a higher frequency of CD16+ monocytes producing TNFα. Conversely, we observed a decrease in the frequency of mDCs producing TNFα in AR under SCIT, similar to the observed in the control group. Conclusions SCIT seems to induce numeric, phenotypic, and functional changes in circulating monocytes and dendritic cells, contributing at least in part to the well described immunological alterations induced by this type of immunotherapy.
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Affiliation(s)
- Letícia Sousa
- 1Stemlab, S.A, Biocant Park, Núcleo 4, Lote 2, Cantanhede, Portugal
| | - Carmen Martín-Sierra
- 2Flow Cytometry Unit, Clinical Pathology Service, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, Ed. S. Jerónimo, 3° piso, 30001-301 Coimbra, Portugal
| | - Celso Pereira
- 3Immunoallergology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Graça Loureiro
- 3Immunoallergology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Beatriz Tavares
- 3Immunoallergology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Susana Pedreiro
- 2Flow Cytometry Unit, Clinical Pathology Service, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, Ed. S. Jerónimo, 3° piso, 30001-301 Coimbra, Portugal
| | - António Martinho
- Portuguese Institute of Blood and Transplantation, Coimbra, Portugal
| | - Artur Paiva
- 2Flow Cytometry Unit, Clinical Pathology Service, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, Ed. S. Jerónimo, 3° piso, 30001-301 Coimbra, Portugal.,5CIMAGO-Center of Investigation on Environment Genetics and Oncobiology, Faculdade de Medicina da Universidade de Coimbra, Coimbra, Portugal
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19
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Berings M, Gevaert P, De Ruyck N, Derycke L, Holtappels G, Pilette C, Bachert C, Lambrecht BN, Dullaers M. FcεRI expression and IgE binding by dendritic cells and basophils in allergic rhinitis and upon allergen immunotherapy. Clin Exp Allergy 2018; 48:970-980. [PMID: 29682789 DOI: 10.1111/cea.13157] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 04/06/2018] [Accepted: 04/10/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND In humans, both basophils and dendritic cells (DCs) express the high-affinity IgE receptor (FcεRI). OBJECTIVE To gain more insight into the relation between serum IgE levels and FcεRI expression and IgE binding by DCs and basophils in house dust mite (HDM) allergy and during subcutaneous immunotherapy (SCIT). METHODS We measured FcεRI, IgE and HDM allergen on DCs (conventional type 2 DCs, cDC2s; plasmacytoid dendritic cells, pDCs) and basophils by flow cytometry in 22 non-allergic vs 52 allergic subjects and upon HDM SCIT in 28 allergic subjects. IgE levels were measured in serum. RESULTS Serum IgE correlated differentially with FcεRI expression and IgE binding depending on cell type and allergic status. In non-allergic subjects, FcεRI/IgE surface densities increased with serum IgE to a significantly stronger degree on basophils compared to cDC2s. By contrast, in allergic subjects FcεRI/IgE surface densities increased with serum IgE to a slightly stronger degree on cDC2s compared to basophils. In addition, the data set suggests sequential loading of IgE onto FcεRI expressed by these cells (basophils>cDC2s>pDCs). Finally, HDM SCIT induced a temporary increase in serum IgE, which was paralleled by a peak in FcεRI and IgE on DCs, but not on basophils. CONCLUSIONS & CLINICAL RELEVANCE This study provides a comprehensive insight into the relation between serum IgE and FcεRI/IgE on basophils and DC subsets. The novel finding that HDM SCIT induces a temporary increase in FcεRI expression on DCs, but not on basophils, can be an incentive for future research on the potential tolerogenic role of IgE/FcεRI signalling in DCs in the setting of allergen immunotherapy.
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Affiliation(s)
- M Berings
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium.,Laboratory of Immunoregulation, VIB Inflammation Research Center, Ghent, Belgium
| | - P Gevaert
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - N De Ruyck
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - L Derycke
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - G Holtappels
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - C Pilette
- Pole of Pneumology, ENT and Dermatology, Institute of Experimental and Clinical Research (IREC), Université catholique de Louvain, Brussels, Belgium
| | - C Bachert
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - B N Lambrecht
- Laboratory of Immunoregulation, VIB Inflammation Research Center, Ghent, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - M Dullaers
- Laboratory of Immunoregulation, VIB Inflammation Research Center, Ghent, Belgium.,Clinical Immunology Research Lab, Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
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20
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Sallis BF, Erkert L, Moñino-Romero S, Acar U, Wu R, Konnikova L, Lexmond WS, Hamilton MJ, Dunn WA, Szepfalusi Z, Vanderhoof JA, Snapper SB, Turner JR, Goldsmith JD, Spencer LA, Nurko S, Fiebiger E. An algorithm for the classification of mRNA patterns in eosinophilic esophagitis: Integration of machine learning. J Allergy Clin Immunol 2018; 141:1354-1364.e9. [PMID: 29273402 PMCID: PMC6425755 DOI: 10.1016/j.jaci.2017.11.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 11/17/2017] [Accepted: 11/30/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Diagnostic evaluation of eosinophilic esophagitis (EoE) remains difficult, particularly the assessment of the patient's allergic status. OBJECTIVE This study sought to establish an automated medical algorithm to assist in the evaluation of EoE. METHODS Machine learning techniques were used to establish a diagnostic probability score for EoE, p(EoE), based on esophageal mRNA transcript patterns from biopsies of patients with EoE, gastroesophageal reflux disease and controls. Dimensionality reduction in the training set established weighted factors, which were confirmed by immunohistochemistry. Following weighted factor analysis, p(EoE) was determined by random forest classification. Accuracy was tested in an external test set, and predictive power was assessed with equivocal patients. Esophageal IgE production was quantified with epsilon germ line (IGHE) transcripts and correlated with serum IgE and the Th2-type mRNA profile to establish an IGHE score for tissue allergy. RESULTS In the primary analysis, a 3-class statistical model generated a p(EoE) score based on common characteristics of the inflammatory EoE profile. A p(EoE) ≥ 25 successfully identified EoE with high accuracy (sensitivity: 90.9%, specificity: 93.2%, area under the curve: 0.985) and improved diagnosis of equivocal cases by 84.6%. The p(EoE) changed in response to therapy. A secondary analysis loop in EoE patients defined an IGHE score of ≥37.5 for a patient subpopulation with increased esophageal allergic inflammation. CONCLUSIONS The development of intelligent data analysis from a machine learning perspective provides exciting opportunities to improve diagnostic precision and improve patient care in EoE. The p(EoE) and the IGHE score are steps toward the development of decision trees to define EoE subpopulations and, consequently, will facilitate individualized therapy.
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Affiliation(s)
- Benjamin F. Sallis
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Lena Erkert
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna
| | - Sherezade Moñino-Romero
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Pediatrics and Adolescent Medicine, Medical
University of Vienna
| | - Utkucan Acar
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Rina Wu
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna
| | - Liza Konnikova
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Willem S. Lexmond
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Matthew J. Hamilton
- Department of Medicine, Harvard Medical School, Medical
University of Vienna.,Department of Pathology, Medical University of
Vienna.,Division of Gastroenterology, Hepatology, and Endoscopy,
Brigham and Women’s Hospital; Medical University of Vienna
| | - W. Augustine Dunn
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Zsolt Szepfalusi
- Department of Pediatrics and Adolescent Medicine, Medical
University of Vienna
| | - Jon A. Vanderhoof
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna
| | - Scott B. Snapper
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Jerrold R. Turner
- Department of Pathology, Medical University of
Vienna.,Division of Gastroenterology, Hepatology, and Endoscopy,
Brigham and Women’s Hospital; Medical University of Vienna
| | - Jeffrey D. Goldsmith
- Department of Pathology, Boston Children’s Hospital,
Medical University of Vienna
| | - Lisa A. Spencer
- Department of Medicine, Harvard Medical School, Medical
University of Vienna.,Department of Medicine, Division of Allergy and
Inflammation, Beth Israel Deaconess Medical Center, Boston, Medical University of
Vienna
| | - Samuel Nurko
- Department of Pediatrics, Division of Gastroenterology,
Hepatology and Nutrition, Medical University of Vienna.,Department of Medicine, Harvard Medical School, Medical
University of Vienna
| | - Edda Fiebiger
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, Mass; Department of Medicine, Harvard Medical School, Boston, Mass.
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21
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Khoryati L, Augusto JF, Shipley E, Contin-Bordes C, Douchet I, Mitrovic S, Truchetet ME, Lazaro E, Duffau P, Couzi L, Jacquemin C, Barnetche T, Vacher P, Schaeverbeke T, Blanco P, Richez C. IgE Inhibits Toll-like Receptor 7- and Toll-like Receptor 9-Mediated Expression of Interferon-α by Plasmacytoid Dendritic Cells in Patients With Systemic Lupus Erythematosus. Arthritis Rheumatol 2017; 68:2221-31. [PMID: 26991804 DOI: 10.1002/art.39679] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 03/08/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Plasmacytoid dendritic cells (PDCs) play a central role in pathogenesis of systemic lupus erythematosus (SLE) through their unique ability to produce large amounts of type I interferon (IFN) upon Toll-like receptor 7 (TLR-7) and TLR-9 triggering. PDCs express specific surface regulatory receptors involved in negative regulation of IFNα secretion. These receptors use the γ-chain of high-affinity Fc receptor (FcR) for IgE, FcɛRI. We undertook this study to test our hypothesis that IgE engagement of FcɛRI on PDCs may impact IFNα production in SLE patients. METHODS Serum levels of total IgE were measured in healthy volunteers, SLE patients, and patients with IgE-dependent allergic disorders. FcɛRI expression on PDCs from SLE patients was evaluated by flow cytometry. Purified PDCs were incubated with monoclonal IgE for 24 hours, then stimulated for 18 hours with TLR agonists or immune complexes (ICs). IFNα production by PDCs was detected by quantitative real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay. Expression of TLR-7, TLR-9, and IFN regulatory factor 7 (IRF-7) in PDCs was quantified by quantitative real-time PCR. RESULTS We observed significantly higher IgE levels in SLE patients with quiescent disease than in those with active disease. In SLE patients, IgE levels correlated inversely with disease activity. IgE levels were not associated with the presence of antinuclear IgE. Purified PDCs treated for 24 hours with monoclonal IgE up-regulated FcɛRI expression in an IgE dose-dependent manner. IgE-treated PDCs significantly decreased IFNα secretion and down-regulated CCR7 expression upon stimulation with TLR-7 and TLR-9 ligands and ICs from lupus patients. IgE treatment down-regulated expression of TLR-9 and IRF-7. CONCLUSION Our results support the notion that IgE plays a protective role in SLE pathogenesis through the modulation of inflammatory response by PDCs.
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Affiliation(s)
- Liliane Khoryati
- Université de Bordeaux and Immuno ConcEpT, CNRS-UMR 5164, Bordeaux, France
| | | | - Emilie Shipley
- Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Cécile Contin-Bordes
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | | | - Stéphane Mitrovic
- Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Marie-Elise Truchetet
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Estibaliz Lazaro
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Pierre Duffau
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Lionel Couzi
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Clément Jacquemin
- Université de Bordeaux and Immuno ConcEpT, CNRS-UMR 5164, Bordeaux, France
| | | | - Pierre Vacher
- Université de Bordeaux and INSERM U916, Institut Bergonié, Bordeaux, France
| | - Thierry Schaeverbeke
- Université de Bordeaux and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Patrick Blanco
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Christophe Richez
- Université de Bordeaux, Immuno ConcEpT, CNRS-UMR 5164, and Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
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22
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Jensen‐Jarolim E, Bax HJ, Bianchini R, Capron M, Corrigan C, Castells M, Dombrowicz D, Daniels‐Wells TR, Fazekas J, Fiebiger E, Gatault S, Gould HJ, Janda J, Josephs DH, Karagiannis P, Levi‐Schaffer F, Meshcheryakova A, Mechtcheriakova D, Mekori Y, Mungenast F, Nigro EA, Penichet ML, Redegeld F, Saul L, Singer J, Spicer JF, Siccardi AG, Spillner E, Turner MC, Untersmayr E, Vangelista L, Karagiannis SN. AllergoOncology - the impact of allergy in oncology: EAACI position paper. Allergy 2017; 72:866-887. [PMID: 28032353 PMCID: PMC5498751 DOI: 10.1111/all.13119] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2016] [Indexed: 12/19/2022]
Abstract
Th2 immunity and allergic immune surveillance play critical roles in host responses to pathogens, parasites and allergens. Numerous studies have reported significant links between Th2 responses and cancer, including insights into the functions of IgE antibodies and associated effector cells in both antitumour immune surveillance and therapy. The interdisciplinary field of AllergoOncology was given Task Force status by the European Academy of Allergy and Clinical Immunology in 2014. Affiliated expert groups focus on the interface between allergic responses and cancer, applied to immune surveillance, immunomodulation and the functions of IgE-mediated immune responses against cancer, to derive novel insights into more effective treatments. Coincident with rapid expansion in clinical application of cancer immunotherapies, here we review the current state-of-the-art and future translational opportunities, as well as challenges in this relatively new field. Recent developments include improved understanding of Th2 antibodies, intratumoral innate allergy effector cells and mediators, IgE-mediated tumour antigen cross-presentation by dendritic cells, as well as immunotherapeutic strategies such as vaccines and recombinant antibodies, and finally, the management of allergy in daily clinical oncology. Shedding light on the crosstalk between allergic response and cancer is paving the way for new avenues of treatment.
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Affiliation(s)
- E. Jensen‐Jarolim
- The Interuniversity Messerli Research InstituteUniversity of Veterinary Medicine ViennaMedical University of ViennaViennaAustria
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - H. J. Bax
- Division of Genetics & Molecular MedicineFaculty of Life Sciences and MedicineSt. John's Institute of DermatologyKing's College LondonLondonUK
- Division of Cancer StudiesFaculty of Life Sciences & MedicineKing's College LondonGuy's HospitalLondonUK
| | - R. Bianchini
- The Interuniversity Messerli Research InstituteUniversity of Veterinary Medicine ViennaMedical University of ViennaViennaAustria
| | - M. Capron
- LIRIC‐Unité Mixte de Recherche 995 INSERMUniversité de Lille 2CHRU de LilleLilleFrance
| | - C. Corrigan
- Division of Asthma, Allergy and Lung BiologyMedical Research Council and Asthma UK Centre in Allergic Mechanisms in AsthmaKing's College LondonLondonUK
| | - M. Castells
- Division of Rheumatology, Immunology and AllergyDepartment of MedicineBrigham and Women's HospitalHarvard Medical SchoolBostonMAUSA
| | - D. Dombrowicz
- INSERMCHU LilleEuropean Genomic Institute of DiabetesInstitut Pasteur de LilleU1011 – récepteurs nucléaires, maladies cardiovasculaires et diabèteUniversité de LilleLilleFrance
| | - T. R. Daniels‐Wells
- Division of Surgical OncologyDepartment of SurgeryDavid Geffen School of Medicine at UCLALos AngelesCAUSA
| | - J. Fazekas
- The Interuniversity Messerli Research InstituteUniversity of Veterinary Medicine ViennaMedical University of ViennaViennaAustria
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - E. Fiebiger
- Division of Gastroenterology, Hepatology and Nutrition ResearchDepartment of Medicine ResearchChildren's University Hospital BostonBostonMAUSA
| | - S. Gatault
- LIRIC‐Unité Mixte de Recherche 995 INSERMUniversité de Lille 2CHRU de LilleLilleFrance
| | - H. J. Gould
- Division of Asthma, Allergy and Lung BiologyMedical Research Council and Asthma UK Centre in Allergic Mechanisms in AsthmaKing's College LondonLondonUK
- Randall Division of Cell and Molecular BiophysicsKing's College LondonLondonUK
- NIHR Biomedical Research Centre at Guy's and St. Thomas’ Hospitals and King's College LondonKing's College LondonGuy's HospitalLondonUK
| | - J. Janda
- Center PigmodInstitute of Animal Physiology and GeneticsAcademy of Sciences of Czech RepublicLibechovCzech Republic
| | - D. H. Josephs
- Division of Genetics & Molecular MedicineFaculty of Life Sciences and MedicineSt. John's Institute of DermatologyKing's College LondonLondonUK
- Division of Cancer StudiesFaculty of Life Sciences & MedicineKing's College LondonGuy's HospitalLondonUK
| | - P. Karagiannis
- Division of Genetics & Molecular MedicineFaculty of Life Sciences and MedicineSt. John's Institute of DermatologyKing's College LondonLondonUK
- NIHR Biomedical Research Centre at Guy's and St. Thomas’ Hospitals and King's College LondonKing's College LondonGuy's HospitalLondonUK
| | - F. Levi‐Schaffer
- Pharmacology and Experimental Therapeutics UnitFaculty of MedicineSchool of PharmacyThe Institute for Drug ResearchThe Hebrew University of JerusalemJerusalemIsrael
| | - A. Meshcheryakova
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - D. Mechtcheriakova
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - Y. Mekori
- Sackler Faculty of MedicineTel‐Aviv UniversityTel‐AvivIsrael
| | - F. Mungenast
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - E. A. Nigro
- IRCCS San Raffaele Scientific InstituteMilanItaly
| | - M. L. Penichet
- Division of Surgical OncologyDepartment of SurgeryDavid Geffen School of Medicine at UCLALos AngelesCAUSA
- Department of Microbiology, Immunology, and Molecular GeneticsDavid Geffen School of Medicine at UCLALos AngelesCAUSA
- Jonsson Comprehensive Cancer CenterUniversity of CaliforniaLos AngelesCAUSA
| | - F. Redegeld
- Division of PharmacologyFaculty of ScienceUtrecht Institute for Pharmaceutical SciencesUtrecht UniversityUtrechtThe Netherlands
| | - L. Saul
- Division of Genetics & Molecular MedicineFaculty of Life Sciences and MedicineSt. John's Institute of DermatologyKing's College LondonLondonUK
- Division of Cancer StudiesFaculty of Life Sciences & MedicineKing's College LondonGuy's HospitalLondonUK
| | - J. Singer
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - J. F. Spicer
- Division of Cancer StudiesFaculty of Life Sciences & MedicineKing's College LondonGuy's HospitalLondonUK
- NIHR Biomedical Research Centre at Guy's and St. Thomas’ Hospitals and King's College LondonKing's College LondonGuy's HospitalLondonUK
| | | | - E. Spillner
- Immunological EngineeringDepartment of EngineeringAarhus UniversityAarhusDenmark
| | - M. C. Turner
- ISGlobalCentre for Research in Environmental Epidemiology (CREAL)BarcelonaSpain
- Universitat Pompeu Fabra (UPF)BarcelonaSpain
- CIBER Epidemiología y Salud Pública (CIBERESP)MadridSpain
- McLaughlin Centre for Population Health Risk AssessmentUniversity of OttawaOttawaONCanada
| | - E. Untersmayr
- Institute of Pathophysiology & Allergy ResearchCenter of Pathophysiology, Infectiology & ImmunologyMedical University ViennaViennaAustria
| | - L. Vangelista
- Department of Biomedical SciencesNazarbayev University School of MedicineAstanaKazakhstan
| | - S. N. Karagiannis
- Division of Genetics & Molecular MedicineFaculty of Life Sciences and MedicineSt. John's Institute of DermatologyKing's College LondonLondonUK
- NIHR Biomedical Research Centre at Guy's and St. Thomas’ Hospitals and King's College LondonKing's College LondonGuy's HospitalLondonUK
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Liour SS, Tom A, Chan YH, Chang TW. Treating IgE-mediated diseases via targeting IgE-expressing B cells using an anti-CεmX antibody. Pediatr Allergy Immunol 2016; 27:446-51. [PMID: 27090058 DOI: 10.1111/pai.12584] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/17/2016] [Indexed: 01/17/2023]
Abstract
Targeting the IgE pathway is a clinically validated strategy for treating IgE-mediated diseases. Omalizumab, an anti-IgE antibody, which binds to free IgE and prevents the binding of IgE to FcεRI on mast cells and basophils has been approved for severe persistent allergic asthma and chronic spontaneous (idiopathic) urticaria. The therapeutic efficacy of anti-IgE has also been reported in allergic rhinitis, allergic bronchopulmonary aspergillosis, latex allergy, atopic dermatitis, allergic urticaria, anaphylaxis, and others. Anti-CεmX, which binds to membrane-bound IgE (mIgE) on IgE-switched B cells, lyses mIgE-expressing B lymphoblasts and prevents the allergen-induced generation of IgE-producing plasma cells, offers an alternative mechanism of intervening with the IgE inflammatory pathway. Because anti-CεmX does not bind to free IgE, it can modulate the IgE pathway regardless of the serum IgE levels in treated patients. These unique pharmacologic mechanisms potentially enable anti-CεmX to provide different clinical utilities from anti-IgE and serve as a therapeutic and a prophylactic in some IgE-mediated diseases, which are not adequately treated with current medicine.
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Affiliation(s)
| | - Andrew Tom
- Genomics Research Center, Taipei, Taiwan
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24
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Mudde ACA, Lexmond WS, Blumberg RS, Nurko S, Fiebiger E. Eosinophilic esophagitis: published evidences for disease subtypes, indications for patient subpopulations, and how to translate patient observations to murine experimental models. World Allergy Organ J 2016; 9:23. [PMID: 27458501 PMCID: PMC4947322 DOI: 10.1186/s40413-016-0114-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/01/2016] [Indexed: 02/06/2023] Open
Abstract
Eosinophilic esophagitis (EoE) is a chronic inflammatory disorder of the esophagus and commonly classified as a Th2-type allergy. Major advances in our understanding of the EoE pathophysiology have recently been made, but clinicians struggle with highly unpredictable therapy responses indicative of phenotypic diversity within the patient population. Here, we summarize evidences for the existence of EoE subpopulations based on diverse inflammatory characteristics of the esophageal tissue in EoE. Additionally, clinical characteristics of EoE patients support the concept of disease subtypes. We conclude that clinical and experimental evidences indicate that EoE is an umbrella term for conditions that are unified by esophageal eosinophilia but that several disease subgroups with various inflammatory esophageal patterns and/or different clinical features exist. We further discuss strategies to study the pathophysiologic differences as observed in EoE patients in murine experimental EoE. Going forward, models of EoE that faithfully mimic EoE subentities as defined in humans will be essential because mechanistic studies on triggers which regulate the onset of diverse EoE subpopulations are not feasible in patients. Understanding how and why different EoE phenotypes develop will be a first and fundamental step to establish strategies that integrate individual variations of the EoE pathology into personalized therapy.
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Affiliation(s)
- Anne C A Mudde
- Department of Medicine, Harvard Medical School, and Division of Gastroenterology and Nutrition, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115 USA
| | - Willem S Lexmond
- Department of Medicine, Harvard Medical School, and Division of Gastroenterology and Nutrition, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115 USA
| | - Richard S Blumberg
- Division of Gastroenterology, Hepatology, and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA USA
| | - Samuel Nurko
- Department of Medicine, Harvard Medical School, and Division of Gastroenterology and Nutrition, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115 USA ; Center for Motility and Functional Gastrointestinal Disorders, Boston, MA USA ; Eosinophilic Gastrointestinal Disease Center, Boston Children's Hospital, Boston, MA USA
| | - Edda Fiebiger
- Department of Medicine, Harvard Medical School, and Division of Gastroenterology and Nutrition, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115 USA
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25
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Amoako-Sakyi D, Adukpo S, Kusi KA, Dodoo D, Ofori MF, Adjei GO, Edoh DE, Asmah RH, Brown C, Adu B, Obiri-Yeboah D, Futagbi G, Abubakari SB, Troye-Blomberg M, Akanmori BD, Goka BQ, Arko-Mensah J, Gyan BA. A STAT6 Intronic Single-Nucleotide Polymorphism is Associated with Clinical Malaria in Ghanaian Children. GENETICS & EPIGENETICS 2016; 8:7-14. [PMID: 27279750 PMCID: PMC4887113 DOI: 10.4137/geg.s38307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 04/04/2016] [Accepted: 04/07/2016] [Indexed: 02/02/2023]
Abstract
Malaria pathogenesis may be influenced by IgE responses and cytokine cross-regulation. Several mutations in the IL-4/STAT6 signaling pathway can alter cytokine cross-regulation and IgE responses during a Plasmodium falciparum malarial infection. This study investigated the relationship between a STAT6 intronic single-nucleotide polymorphism (rs3024974), total IgE, cytokines, and malaria severity in 238 Ghanaian children aged between 0.5 and 13 years. Total IgE and cytokine levels were measured by ELISA, while genotyping was done by polymerase chain reaction-restriction fragment length polymorphism (RFLP). Compared with healthy controls, heterozygosity protected against clinical malaria: uncomplicated malaria (odds ratios [OR] = 0.13, P < 0.001), severe malarial anemia (OR = 0.18, P < 0.001), and cerebral malaria (OR = 0.39, P = 0.022). Levels of total IgE significantly differed among malaria phenotypes (P = 0.044) and rs3024974 genotypes (P = 0.037). Neither cytokine levels nor IL-6/IL-10 ratios were associated with malaria phenotypes or rs3024974 genotypes. This study suggests a role for rs3024974 in malaria pathogenesis and offers further insights into an IL-4/STAT6 pathway mutation in malaria pathogenesis.
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Affiliation(s)
- Daniel Amoako-Sakyi
- Department of Microbiology and Immunology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana.; Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Selorme Adukpo
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana.; Institute of Tropical Medicine, Eberhard Karls University, Tübingen, Germany
| | - Kwadwo A Kusi
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Daniel Dodoo
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Michael F Ofori
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - George O Adjei
- Department of Child Health, School of Medicine and Dentistry, College of Health Science, University of Ghana, Legon, Accra, Ghana.; Centre for Tropical Clinical Pharmacology and Therapeutics, School of Medicine and Dentistry, Centre for Tropical Clinical Pharmacology and Therapeutics, Legon, Accra, Ghana
| | - Dominic E Edoh
- Department of Animal Biology and Conservation Science, University of Ghana, Legon, Accra, Ghana
| | - Richard H Asmah
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Charles Brown
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Bright Adu
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Dorcas Obiri-Yeboah
- Department of Microbiology and Immunology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Godfred Futagbi
- Department of Animal Biology and Conservation Science, University of Ghana, Legon, Accra, Ghana
| | - Sharif Buari Abubakari
- Department of Microbiology and Immunology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Marita Troye-Blomberg
- Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Bartholomew D Akanmori
- Immunization and Vaccines Development Programme, Family & Reproductive Health Cluster, WHO Regional Office for Africa, Brazzaville, Congo
| | - Bamenla Q Goka
- Department of Child Health, School of Medicine and Dentistry, College of Health Science, University of Ghana, Legon, Accra, Ghana
| | - John Arko-Mensah
- Department of Biological, Environmental and Occupational Health, School of Public Health, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - Ben A Gyan
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
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26
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Selb R, Eckl-Dorna J, Neunkirchner A, Schmetterer K, Marth K, Gamper J, Jahn-Schmid B, Pickl WF, Valenta R, Niederberger V. CD23 surface density on B cells is associated with IgE levels and determines IgE-facilitated allergen uptake, as well as activation of allergen-specific T cells. J Allergy Clin Immunol 2016; 139:290-299.e4. [PMID: 27372566 DOI: 10.1016/j.jaci.2016.03.042] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 02/17/2016] [Accepted: 03/02/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND Increasing evidence suggests that the low-affinity receptor for IgE, CD23, plays an important role in controlling the activity of allergen-specific T cells through IgE-facilitated allergen presentation. OBJECTIVE We sought to determine the number of CD23 molecules on immune cells in allergic patients and to investigate whether the number of CD23 molecules on antigen-presenting cells is associated with IgE levels and influences allergen uptake and allergen-specific T-cell activation. METHODS Numbers of CD23 molecules on immune cells of allergic patients were quantified by using flow cytometry with QuantiBRITE beads and compared with total and allergen-specific IgE levels, as well as with allergen-induced immediate skin reactivity. Allergen uptake and allergen-specific T-cell activation in relation to CD23 surface density were determined by using flow cytometry in combination with confocal microscopy and T cells transfected with the T-cell receptor specific for the birch pollen allergen Bet v 1, respectively. Defined IgE-allergen immune complexes were formed with human monoclonal allergen-specific IgE and Bet v 1. RESULTS In allergic patients the vast majority of CD23 molecules were expressed on naive IgD+ B cells. The density of CD23 molecules on B cells but not the number of CD23+ cells correlated with total IgE levels (RS = 0.53, P = .03) and allergen-induced skin reactions (RS = 0.63, P = .008). Uptake of allergen-IgE complexes into B cells and activation of allergen-specific T cells depended on IgE binding to CD23 and were associated with CD23 surface density. Addition of monoclonal IgE to cultured PBMCs significantly (P = .04) increased CD23 expression on B cells. CONCLUSION CD23 surface density on B cells of allergic patients is correlated with allergen-specific IgE levels and determines allergen uptake and subsequent activation of T cells.
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Affiliation(s)
- Regina Selb
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - Julia Eckl-Dorna
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - Alina Neunkirchner
- Christian Doppler Laboratory for Immunomodulation, Medical University of Vienna, Vienna, Austria; Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Klaus Schmetterer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Katharina Marth
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Jutta Gamper
- Section for Medical Statistics, Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Beatrice Jahn-Schmid
- Division of Experimental Allergology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Winfried F Pickl
- Christian Doppler Laboratory for Immunomodulation, Medical University of Vienna, Vienna, Austria; Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Rudolf Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Verena Niederberger
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria.
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27
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Yan KX, Huang Q, Fang X, Zhang ZH, Han L, Gadaldi K, Kang KF, Zheng ZZ, Xu JH, Yawalkar N. IgE and FcεRI are highly expressed on innate cells in psoriasis. Br J Dermatol 2016; 175:122-33. [PMID: 26853903 DOI: 10.1111/bjd.14459] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND Although elevated serum IgE levels have been reported in psoriasis, the role of IgE in psoriasis still needs to be clarified. OBJECTIVES To analyse serum total IgE levels in addition to the presence and distribution of IgE and FcεRI in psoriatic lesions, and to investigate alteration of IgE and FcεRI after successful systemic treatment. METHODS Total serum IgE levels were determined using enzyme-linked immunosorbent assay. The expression and localization of IgE and FcεRI was investigated using immunohistochemistry and double immunofluorescence. RESULTS Elevated total serum IgE levels were found in 39% of patients with psoriasis. The levels of total serum IgE were significantly higher in male patients compared with female patients. Furthermore, total serum IgE levels decreased after successful systemic treatment. A positive correlation between IgE+ and FcεRI+ cells and a significant increase of these cells was found in psoriatic lesions when compared with normal skin. Interestingly, IgE+ and FcεRI+ cells decreased significantly after successful therapy with ustekinumab. IgE and FcεRI were coexpressed on mast cells, epidermal Langerhans cells, dermal dendritic cells, macrophages and a small number of neutrophils. CONCLUSIONS IgE might participate in the development of psoriasis by activating FcεRI-bearing cells.
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Affiliation(s)
- K-X Yan
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Q Huang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - X Fang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Z-H Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - L Han
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - K Gadaldi
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - K-F Kang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Z-Z Zheng
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J-H Xu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - N Yawalkar
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
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28
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Ziegler-Heitbrock L. Blood Monocytes and Their Subsets: Established Features and Open Questions. Front Immunol 2015; 6:423. [PMID: 26347746 PMCID: PMC4538304 DOI: 10.3389/fimmu.2015.00423] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/03/2015] [Indexed: 01/20/2023] Open
Abstract
In contrast to the past reliance on morphology, the identification and enumeration of blood monocytes are nowadays done with monoclonal antibodies and flow cytometry and this allows for subdivision into classical, intermediate, and non-classical monocytes. Using specific cell surface markers, dendritic cells in blood can be segregated from these monocytes. While in the past, changes in monocyte numbers as determined in standard hematology counters have not had any relevant clinical impact, the subset analysis now has uncovered informative changes that may be used in management of disease.
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Ashjaei K, Palmberger D, Bublin M, Bajna E, Breiteneder H, Grabherr R, Ellinger I, Hoffmann-Sommergruber K. Atopic donor status does not influence the uptake of the major grass pollen allergen, Phl p 5, by dendritic cells. J Immunol Methods 2015; 424:120-30. [PMID: 26055335 PMCID: PMC4739503 DOI: 10.1016/j.jim.2015.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 02/02/2023]
Abstract
Dendritic cells (DCs) are sentinels of the immune system for antigen recognition and uptake, as well as presentation to naïve T cells for stimulation or priming. Internalization and endocytic degradation of allergens by DCs are important steps required for T cell priming. In the current study we investigated binding and internalization of purified recombinant non-glycosylated grass pollen allergen, Phl p 5, and natural non-specific lipid transfer protein from sunflower, SF-nsLTP to human monocyte derived dendritic cells (MoDCs). Colocalization of Phl p 5 with low affinity (CD23) or high affinity receptor (FcεRI) was investigated by immunofluorescence staining. Likewise, localization of the allergens in early (EE) and late endosomes (LE) was detected by co-staining for early endosome antigen (EEA1) and lysosomal-associated membrane protein 1 (LAMP1). In our experimental setting we could demonstrate that Phl p 5 as well as SF-nsLTP bound to MoDCs from both, grass pollen allergic and non-allergic individuals. Competitive allergen uptake experiments demonstrated non-preferential and simultaneous uptake of Phl p 5 and SF-nsLTP by MoDCs. No overlap of signals from Phl p 5 and CD23 or FcεRI was detectable, excluding IgE-mediated uptake for this allergen. Both allergens, Phl p 5 and SF-nsLTP, were localized in early and late endosomes. The present study applied a set of methods to assess the allergen uptake by MoDCs in an in vitro model. No qualitative and quantitative differences in the allergen uptake of both, Phl p 5 and SF-nsLTP were detected in single and competitive assays.
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Affiliation(s)
- Kazem Ashjaei
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
| | - Dieter Palmberger
- Vienna Institute of Biotechnology - VIBT, University of Natural Resources and Life Sciences, Vienna, Austria.
| | - Merima Bublin
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
| | - Erika Bajna
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
| | - Heimo Breiteneder
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
| | - Reingard Grabherr
- Vienna Institute of Biotechnology - VIBT, University of Natural Resources and Life Sciences, Vienna, Austria.
| | - Isabella Ellinger
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
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Platzer B, Stout M, Fiebiger E. Functions of dendritic-cell-bound IgE in allergy. Mol Immunol 2015; 68:116-9. [PMID: 26052071 DOI: 10.1016/j.molimm.2015.05.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 04/27/2015] [Accepted: 05/17/2015] [Indexed: 12/20/2022]
Abstract
Immunoglobulin E (IgE) functions as an Fc-receptor-bound antigen sensor for mast cells and basophils, the classical effector cells of allergy. A cell-bound IgE pool is formed when monomeric IgE binds to FcɛRI, the high affinity IgE Fc receptor on these cells, and minor amounts of antigen are sufficient to trigger the pro-allergic innate IgE effector axis. Additionally, FcɛRI is constitutively expressed on human dendritic cells (DCs), and thus the latter cell type also receives signals via cell-bound IgE. Notably, steady-state expression of FcɛRI on DCs is absent in SPF-housed mice. How DCs integrate IgE/FcɛRI-derived signals into their sentinel functions as gatekeepers of immunity was therefore only recently studied with transgenic mice that phenocopy human FcɛRI expression. In this review, we summarize advances in our understanding of the functions of DC-bound IgE which demonstrate that IgE-mediated activation of DCs in allergic Th2-type inflammation appears to be immune regulatory rather than pro-inflammatory.
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Affiliation(s)
- Barbara Platzer
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
| | - Madeleine Stout
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Edda Fiebiger
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
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Platzer B, Baker K, Vera MP, Singer K, Panduro M, Lexmond WS, Turner D, Vargas SO, Kinet JP, Maurer D, Baron RM, Blumberg RS, Fiebiger E. Dendritic cell-bound IgE functions to restrain allergic inflammation at mucosal sites. Mucosal Immunol 2015; 8:516-32. [PMID: 25227985 PMCID: PMC4363306 DOI: 10.1038/mi.2014.85] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 08/11/2014] [Indexed: 02/04/2023]
Abstract
Antigen-mediated cross-linking of Immunoglobulin E (IgE) bound to mast cells/basophils via FcɛRI, the high affinity IgE Fc-receptor, is a well-known trigger of allergy. In humans, but not mice, dendritic cells (DCs) also express FcɛRI that is constitutively occupied with IgE. In contrast to mast cells/basophils, the consequences of IgE/FcɛRI signals for DC function remain poorly understood. We show that humanized mice that express FcɛRI on DCs carry IgE like non-allergic humans and do not develop spontaneous allergies. Antigen-specific IgE/FcɛRI cross-linking fails to induce maturation or production of inflammatory mediators in human DCs and FcɛRI-humanized DCs. Furthermore, conferring expression of FcɛRI to DCs decreases the severity of food allergy and asthma in disease-relevant models suggesting anti-inflammatory IgE/FcɛRI signals. Consistent with the improved clinical parameters in vivo, antigen-specific IgE/FcɛRI cross-linking on papain or lipopolysaccharide-stimulated DCs inhibits the production of pro-inflammatory cytokines and chemokines. Migration assays confirm that the IgE-dependent decrease in cytokine production results in diminished recruitment of mast cell progenitors; providing a mechanistic explanation for the reduced mast cell-dependent allergic phenotype observed in FcɛRI-humanized mice. Our study demonstrates a novel immune regulatory function of IgE and proposes that DC-intrinsic IgE signals serve as a feedback mechanism to restrain allergic tissue inflammation.
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Affiliation(s)
- Barbara Platzer
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Kristi Baker
- Division of Gastroenterology, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Miguel Pinilla Vera
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Kathleen Singer
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Marisella Panduro
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Willem S. Lexmond
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Devin Turner
- Department of Pathology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Sara O. Vargas
- Departments of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Jean-Pierre Kinet
- Department of Pathology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Dieter Maurer
- Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Rebecca M. Baron
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Richard S. Blumberg
- Division of Gastroenterology, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Edda Fiebiger
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
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Is the analysis of histamine and/or interleukin-4 release after isocyanate challenge useful in the identification of patients with IgE-mediated isocyanate asthma? J Immunol Methods 2015; 422:35-50. [PMID: 25865264 DOI: 10.1016/j.jim.2015.03.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/21/2015] [Accepted: 03/25/2015] [Indexed: 11/20/2022]
Abstract
Isocyanates are a well-known and frequent cause of occupational asthma. The implementation of specific inhalation challenges (SICs) is the gold standard in asthma diagnosis supporting occupational case history, lung function testing, specific skin prick tests and the detection of specific IgE. However, the diagnosis is not always definitive. An interesting new approach, analyses of individual genetic susceptibilities, requires discrimination between a positive SIC reaction arising from IgE-mediated immune responses and one from other pathophysiological mechanisms. Hence, additional refinement tools would be helpful in defining sub-classes of occupational asthma and diagnosis. We used total IgE levels, specific IgE and SIC results for sub-classification of 27 symptomatic isocyanate workers studied. Some mutations in glutathione S-transferases (GSTs) are suspected either to enhance or to decrease the individual risk in the development of isocyanate asthma. Our patient groups were assessed for the point mutations GSTP1*I105V and GSTP1*A114V as well as deletions (null mutations) of GSTM1 and GSTT1. There seems to be a higher risk in developing IgE-mediated reactions when GSTM1 is deleted, while GSTT1 deletions were found more frequently in the SIC positive group. Blood samples taken before SIC, 30-60 min and 24h after SIC, were analyzed for histamine and IL-4, classical markers for the IgE-mediated antigen-specific activation of basophils or mast cells. We suggest that the utility of histamine measurements might provide an additional useful marker reflecting isocyanate-induced cellular reactions (although the sampling times require optimization). The promising measurement of IL-4 is not feasible at present due to the lack of a reliable, validated assay.
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Greer AM, Matthay MA, Kukreja J, Bhakta NR, Nguyen CP, Wolters PJ, Woodruff PG, Fahy JV, Shin JS. Accumulation of BDCA1⁺ dendritic cells in interstitial fibrotic lung diseases and Th2-high asthma. PLoS One 2014; 9:e99084. [PMID: 24915147 PMCID: PMC4051692 DOI: 10.1371/journal.pone.0099084] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 04/09/2014] [Indexed: 01/03/2023] Open
Abstract
Dendritic cells (DCs) significantly contribute to the pathology of several mouse lung disease models. However, little is known of the contribution of DCs to human lung diseases. In this study, we examined infiltration with BDCA1+ DCs of human lungs in patients with interstitial lung diseases or asthma. Using flow cytometry, we found that these DCs increased by 5∼6 fold in the lungs of patients with idiopathic pulmonary fibrosis or hypersensitivity pneumonitis, which are both characterized by extensive fibrosis in parenchyma. The same DC subset also significantly increased in the lung parenchyma of patients with chronic obstructive pulmonary disease, although the degree of increase was relatively modest. By employing immunofluorescence microscopy using FcεRI and MHCII as the specific markers for BDCA1+ DCs, we found that the numbers of BDCA1+ DCs also significantly increased in the airway epithelium of Th2 inflammation-associated asthma. These findings suggest a potential contribution of BDCA1+ DCs in human lung diseases associated with interstitial fibrosis or Th2 airway inflammation.
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Affiliation(s)
- Alexandra M. Greer
- Department of Microbiology and Immunology, Sandler Asthma Basic Research Center, University of California San Francisco, San Francisco, California, United States of America
| | - Michael A. Matthay
- Department of Medicine and Anesthesia, University of California San Francisco, San Francisco, California, United States of America
| | - Jasleen Kukreja
- Division of Cardiothoracic Surgery, University of California San Francisco, San Francisco, California, United States of America
| | - Nirav R. Bhakta
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Christine P. Nguyen
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Paul J. Wolters
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Prescott G. Woodruff
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - John V. Fahy
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Jeoung-Sook Shin
- Department of Microbiology and Immunology, Sandler Asthma Basic Research Center, University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
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Platzer B, Stout M, Fiebiger E. Antigen cross-presentation of immune complexes. Front Immunol 2014; 5:140. [PMID: 24744762 PMCID: PMC3978348 DOI: 10.3389/fimmu.2014.00140] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 03/19/2014] [Indexed: 12/23/2022] Open
Abstract
The ability of dendritic cells (DCs) to cross-present tumor antigens has long been a focus of interest to physicians, as well as basic scientists, that aim to establish efficient cell-based cancer immune therapy. A prerequisite for exploiting this pathway for therapeutic purposes is a better understanding of the mechanisms that underlie the induction of tumor-specific cytotoxic T-lymphocyte (CTL) responses when initiated by DCs via cross-presentation. The ability of humans DC to perform cross-presentation is of utmost interest, as this cell type is a main target for cell-based immunotherapy in humans. The outcome of a cross-presentation event is guided by the nature of the antigen, the form of antigen uptake, and the subpopulation of DCs that performs presentation. Generally, CD8α+ DCs are considered to be the most potent cross-presenting DCs. This paradigm, however, only applies to soluble antigens. During adaptive immune responses, immune complexes form when antibodies interact with their specific epitopes on soluble antigens. Immunoglobulin G (IgG) immune complexes target Fc-gamma receptors on DCs to shuttle exogenous antigens efficiently into the cross-presentation pathway. This receptor-mediated cross-presentation pathway is a well-described route for the induction of strong CD8+ T cell responses. IgG-mediated cross-presentation is intriguing because it permits the CD8− DCs, which are commonly considered to be weak cross-presenters, to efficiently cross-present. Engaging multiple DC subtypes for cross-presentation might be a superior strategy to boost CTL responses in vivo. We here summarize our current understanding of how DCs use IgG-complexed antigens for the efficient induction of CTL responses. Because of its importance for human cell therapy, we also review the recent advances in the characterization of cross-presentation properties of human DC subsets.
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Affiliation(s)
- Barbara Platzer
- Department of Pediatrics, Division of Gastroenterology and Nutrition, Boston Children's Hospital, Harvard Medical School , Boston, MA , USA
| | - Madeleine Stout
- Department of Pediatrics, Division of Gastroenterology and Nutrition, Boston Children's Hospital, Harvard Medical School , Boston, MA , USA
| | - Edda Fiebiger
- Department of Pediatrics, Division of Gastroenterology and Nutrition, Boston Children's Hospital, Harvard Medical School , Boston, MA , USA
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Lexmond WS, Pardo M, Rooney K, Goettel JA, Snapper SB, Yen EH, Dehlink E, Nurko S, Fiebiger E. Elevated levels of leukotriene C4 synthase mRNA distinguish a subpopulation of eosinophilic oesophagitis patients. Clin Exp Allergy 2014; 43:902-13. [PMID: 23889244 DOI: 10.1111/cea.12146] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 03/23/2013] [Accepted: 05/03/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND Cysteinyl leukotrienes contribute to Th2-type inflammatory immune responses. Their levels in oesophageal tissue, however, do not distinguish patients with eosinophilic oesophagitis (EoE) from controls. OBJECTIVE We asked whether mRNA levels of leukotriene C4 synthase (LTC4 S), a key regulator of leukotriene production, could serve as a marker for EoE. METHODS Digital mRNA expression profiling (nCounter(®) Technology) was performed on proximal and distal oesophageal biopsies of 30 paediatric EoE patients and 40 non-EoE controls. Expression data were confirmed with RT-qPCR. LTC4 S mRNA levels were quantified in whole blood samples. Leukotriene E4 was measured in urine. RESULTS LTC4 S mRNA levels were elevated in proximal (2.6-fold, P < 0.001) and distal (2.9-fold, P < 0.001) oesophageal biopsies from EoE patients. Importantly, increased LTC4 S mRNA transcripts identified a subpopulation of EoE patients (28%). This patient subgroup had higher serum IgE levels (669 U/mL vs. 106 U/mL, P = 0.01), higher mRNA transcript numbers of thymic stromal lymphopoietin (TSLP) (1.6-fold, P = 0.009) and CD4 (1.4-fold, P = 0.04) but lower IL-23 mRNA levels (0.5-fold, P = 0.04). In contrast, elevated levels of IL-23 mRNA were found in oesophageal biopsies of patients with reflux oesophagitis. LTC4 S mRNA transcripts in whole blood and urinary excretion of leukotriene E4 were similar in EoE patient subgroups and non-EoE patients. CONCLUSION & CLINICAL RELEVANCE Elevated oesophageal expression of LTC4 S mRNA is found in a subgroup of EoE patients, concomitant with higher serum IgE levels and an oesophageal transcriptome indicative of a more-pronounced allergic phenotype. Together with TSLP and IL-23 mRNA levels, oesophageal LTC4 S mRNA may facilitate diagnosis of an EoE subpopulation for personalized therapy.
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Affiliation(s)
- W S Lexmond
- Division of Gastroenterology and Nutrition, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
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Greer AM, Wu N, Putnam AL, Woodruff PG, Wolters P, Kinet JP, Shin JS. Serum IgE clearance is facilitated by human FcεRI internalization. J Clin Invest 2014; 124:1187-98. [PMID: 24569373 DOI: 10.1172/jci68964] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 12/12/2013] [Indexed: 11/17/2022] Open
Abstract
The high-affinity IgE receptor FcεRI is constitutively expressed in mast cells and basophils and is required for transmitting stimulatory signals upon engagement of IgE-bound allergens. FcεRI is also constitutively expressed in dendritic cells (DCs) and monocytes in humans; however, the specific functions of the FcεRI expressed by these cells are not completely understood. Here, we found that FcεRI expressed by human blood DC antigen 1-positive (BDCA1+) DCs and monocytes, but not basophils, traffics to endolysosomal compartments under steady-state conditions. Furthermore, IgE bound to FcεRI on BDCA1+ DCs was rapidly endocytosed, transported to the lysosomes, and degraded in vitro. IgE injected into mice expressing human FcεRIα (FCER1A-Tg mice) was endocytosed by conventional DCs and monocytes, and endocytosis was associated with rapid clearance of circulating IgE from these mice. Importantly, this rapid IgE clearance was dependent on monocytes or DCs but not basophils. These findings strongly suggest that constitutive internalization of human FcεRI by DCs and monocytes distinctively contributes to serum IgE clearance.
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Saul L, Josephs DH, Cutler K, Bradwell A, Karagiannis P, Selkirk C, Gould HJ, Jones P, Spicer JF, Karagiannis SN. Comparative reactivity of human IgE to cynomolgus monkey and human effector cells and effects on IgE effector cell potency. MAbs 2014; 6:509-22. [PMID: 24492303 DOI: 10.4161/mabs.27828] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Due to genetic similarities with humans, primates of the macaque genus such as the cynomolgus monkey are often chosen as models for toxicology studies of antibody therapies. IgE therapeutics in development depend upon engagement with the FcεRI and FcεRII receptors on immune effector cells for their function. Only limited knowledge of the primate IgE immune system is available to inform the choice of models for mechanistic and safety evaluations. METHODS The recognition of human IgE by peripheral blood lymphocytes from cynomolgus monkey and man was compared. We used effector cells from each species in ex vivo affinity, dose-response, antibody-receptor dissociation and potency assays. RESULTS We report cross-reactivity of human IgE Fc with cynomolgus monkey cells, and comparable binding kinetics to peripheral blood lymphocytes from both species. In competition and dissociation assays, however, human IgE dissociated faster from cynomolgus monkey compared with human effector cells. Differences in association and dissociation kinetics were reflected in effector cell potency assays of IgE-mediated target cell killing, with higher concentrations of human IgE needed to elicit effector response in the cynomolgus monkey system. Additionally, human IgE binding on immune effector cells yielded significantly different cytokine release profiles in each species. CONCLUSION These data suggest that human IgE binds with different characteristics to human and cynomolgus monkey IgE effector cells. This is likely to affect the potency of IgE effector functions in these two species, and so has relevance for the selection of biologically-relevant model systems when designing pre-clinical toxicology and functional studies.
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Affiliation(s)
- Louise Saul
- Cutaneous Medicine and Immunotherapy; St. John's Institute of Dermatology; Division of Genetics and Molecular Medicine & NIHR Biomedical Research Centre at Guy's and St. Thomas's Hospitals and King's College London; London, UK; Research Oncology, Division of Cancer Studies; King's College London; Guy's Hospital; Great Maze Pond; London, UK
| | - Debra H Josephs
- Cutaneous Medicine and Immunotherapy; St. John's Institute of Dermatology; Division of Genetics and Molecular Medicine & NIHR Biomedical Research Centre at Guy's and St. Thomas's Hospitals and King's College London; London, UK; Research Oncology, Division of Cancer Studies; King's College London; Guy's Hospital; Great Maze Pond; London, UK
| | - Keith Cutler
- Public Health England; Porton Down; Salisbury, Wiltshire UK
| | | | - Panagiotis Karagiannis
- Cutaneous Medicine and Immunotherapy; St. John's Institute of Dermatology; Division of Genetics and Molecular Medicine & NIHR Biomedical Research Centre at Guy's and St. Thomas's Hospitals and King's College London; London, UK
| | - Chris Selkirk
- Biotherapeutics Development Unit; Cancer Research UK; South Mimms, Hertfordshire UK
| | - Hannah J Gould
- Randall Division of Cell and Molecular Biophysics & Division of Asthma; Allergy and Lung Biology, MRC and Asthma UK Centre for Allergic Mechanisms of Asthma, King's College London; London, UK
| | - Paul Jones
- Drug Development Office; Strategy and Research Funding; Cancer Research UK; London, UK
| | - James F Spicer
- Research Oncology, Division of Cancer Studies; King's College London; Guy's Hospital; Great Maze Pond; London, UK
| | - Sophia N Karagiannis
- Cutaneous Medicine and Immunotherapy; St. John's Institute of Dermatology; Division of Genetics and Molecular Medicine & NIHR Biomedical Research Centre at Guy's and St. Thomas's Hospitals and King's College London; London, UK
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Fernandez A, Mills E, Lovik M, Spoek A, Germini A, Mikalsen A, Wal J. Endogenous allergens and compositional analysis in the allergenicity assessment of genetically modified plants. Food Chem Toxicol 2013; 62:1-6. [DOI: 10.1016/j.fct.2013.08.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 08/06/2013] [Accepted: 08/11/2013] [Indexed: 11/26/2022]
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Matson AP, Cloutier MM, Dhongade A, Puddington L, Rafti E. Maternal allergy is associated with surface-bound IgE on cord blood basophils. Pediatr Allergy Immunol 2013; 24:614-21. [PMID: 23980848 PMCID: PMC3798094 DOI: 10.1111/pai.12113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/10/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND The cell type(s) mediating the maternal influence on allergic disease in children remain unclear. We set out to define the relationship between maternal allergy and frequencies of cord blood (CB) basophils, and plasmacytoid dendritic cells (pDCs); to characterize surface-bound IgE and FcεRI expressions on these cells; and to investigate the association between maternal and CB serum IgE levels with surface-bound IgE and FcεRI expressions. METHODS One hundred and three mother/infant dyads were recruited prenatally, and maternal allergic history was recorded. Maternal blood was collected prior to delivery, and CB was collected after birth. Flow cytometry was used to identify CB basophils and pDCs and to determine surface-bound IgE and FcεRI expressions. RESULTS Frequencies of CB basophils and pDCs were low and not related to maternal history of allergy. Percentages of CB basophils with surface-bound IgE were significantly higher in infants of allergic mothers compared with infants of non-allergic mothers (median, 59.60% vs. 19.70%, p = 0.01). IgE on CB basophils correlated with CB IgE levels (r = 0.72, p < 0.0001), but not with maternal IgE levels (r = 0.26, p = 0.06). IgE on CB pDCs was low and not significantly associated with maternal or CB IgE levels. Similarly, FcεRI expression by CB basophils and pDCs was not significantly associated with maternal or CB IgE levels. CONCLUSIONS Frequencies of CB basophils and pDCs are not influenced by maternal allergy. CB basophils and pDCs have surface-bound IgE and express FcεRI; however, only IgE on CB basophils appears influenced by maternal allergy.
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Affiliation(s)
- Adam P Matson
- Department of Immunology, University of Connecticut Health Center, Farmington, CT, USA.
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Chang JC, Kuo HC, Hsu TY, Ou CY, Liu CA, Chuang H, Liang HM, Huang HW, Yang KD. Different genetic associations of the IgE production among fetus, infancy and childhood. PLoS One 2013; 8:e70362. [PMID: 23936416 PMCID: PMC3731352 DOI: 10.1371/journal.pone.0070362] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 06/19/2013] [Indexed: 11/18/2022] Open
Abstract
Elevation of serum IgE levels has long been associated with allergic diseases. Many genes have been linked to IgE production, but few have been linked to the developmental aspects of genetic association with IgE production. To clarify developmental genetic association, we investigated what genes and gene-gene interactions affect IgE levels among fetus, infancy and childhood in Taiwan individuals. A birth cohort of 571 children with completion of IgE measurements from newborn to 1.5, 3, and 6 years of age was subject to genetic association analysis on the 384-customized SNPs of 159 allergy candidate genes. Fifty-three SNPs in 37 genes on innate and adaptive immunity, and stress and response were associated with IgE production. Polymorphisms of the IL13, and the HLA-DPA1 and HLA-DQA1 were, respectively, the most significantly associated with the IgE production at newborn and 6 years of age. Analyses of gene-gene interactions indentified that the combination of NPSR1, rs324981 TT with FGF1, rs2282797 CC had the highest risk (85.7%) of IgE elevation at 1.5 years of age (P = 1.46×10−4). The combination of IL13, CYFIP2 and PDE2A was significantly associated with IgE elevation at 3 years of age (P = 5.98×10−7), and the combination of CLEC2D, COLEC11 and CCL2 was significantly associated with IgE elevation at 6 years of age (P = 6.65×10−7). Our study showed that the genetic association profiles of the IgE production among fetus, infancy and childhood are different. Genetic markers for early prediction and prevention of allergic sensitization may rely on age-based genetic association profiles.
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Affiliation(s)
- Jen-Chieh Chang
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
- Genomic and Proteomic Core Laboratory, Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ho-Chang Kuo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Te-Yao Hsu
- Department of Obstetrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chia-Yu Ou
- Department of Obstetrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chieh-An Liu
- Department of Pediatrics, Po-Jen Hospital, Kaohsiung, Taiwan
| | - Hau Chuang
- Genomic and Proteomic Core Laboratory, Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsiu-Mei Liang
- Department of Obstetrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hurng-Wern Huang
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
- * E-mail: (KDY); (HWH)
| | - Kuender D. Yang
- The Department of Medical Research and Development, Show Chwan Memorial Hospital in Chang Bing, Changhua, Taiwan
- Institute of Clinical Medical Sciences, National Yang Ming University, Taipei City, Taiwan
- * E-mail: (KDY); (HWH)
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Schmied J, Rupa P, Garvie S, Wilkie B. Immune response phenotype of allergic versus clinically tolerant pigs in a neonatal swine model of allergy. Vet Immunol Immunopathol 2013; 154:17-24. [DOI: 10.1016/j.vetimm.2013.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 01/07/2013] [Accepted: 04/08/2013] [Indexed: 10/27/2022]
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Abstract
Understanding the underlying mechanisms that cause and exacerbate allergic asthmatic disease is of great clinical interest. Clinical studies have revealed that allergies and viral respiratory illnesses are strongly linked to the inception and exacerbation of asthma, and suggest the possibility that there are interactive inflammatory mechanisms. Recent work has revealed a number of mechanisms of virus and allergen cross-talk that may play a role in the pathophysiology of allergic asthma, including (1) deficiency in virus-induced interferon responses, (2) defective epithelial barrier function, (3) increased release of epithelium-derived cytokines (e.g., thymic stromal lymphopoietin (TSLP), interleukin (IL)-25, IL-33), (4) dysregulation of lymphocytes [e.g., innate lymphoid cells (ILCs), regulatory T cells (Tregs)], and (5) altered activation of purinergic receptors. One or more of these processes may provide targets for new therapeutics to treat allergic asthma and prevent disease exacerbation.
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Affiliation(s)
- Monica L. Gavala
- Department of Biomolecular Chemistry, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Hiba Bashir
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - James E. Gern
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
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Alcañiz L, Vega A, Chacón P, El Bekay R, Ventura I, Aroca R, Blanca M, Bergstralh DT, Monteseirin J. Histamine production by human neutrophils. FASEB J 2013; 27:2902-10. [PMID: 23572231 DOI: 10.1096/fj.12-223867] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Histamine is an important mediator in the development of allergic reactions. Only a small subset of human cell types is able to produce histamine. No previous studies have shown that human neutrophils are among them. The present work was undertaken to analyze whether human neutrophils produce histamine, and to determine what agonists are involved in histamine production by human neutrophils. The expression of histidine decarboxylase in human neutrophils was established by quantitative PCR, Western blotting, and flow cytometry analysis. The activity of the enzyme was determined by ELISA, which measured histamine in the culture supernatant of neutrophils stimulated with a set of classical agonists. Human neutrophils are bona fide histamine-producing cells. Neutrophils store ∼0.29 pg/cell and release ∼50% of the histamine content in an antigen-dependent manner and on stimulation with other neutrophil agonists. Basal expression of histidine decarboxylase, the rate-limiting enzyme in histamine production, is higher in neutrophils from patients with allergies than from healthy donors. Our results cannot be ascribed to cell contamination for several reasons. LPS failed to induce histamine release by basophils, whereas it induced histamine release by neutrophils; and we did not detect basophils, monocytes, or lymphocytes in our neutrophil preparations. Eosinophils, albeit detected, were only 0.001-0.004% of the final cell population, and they did not store or release histamine on antigen or LPS stimulation. Antigens to which patients with allergies were sensitized stimulated release of histamine from neutrophils. These observations represent a novel view of neutrophils as possible source of histamine in the allergic diseases.
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Affiliation(s)
- Lorena Alcañiz
- Servicio Regional de Inmunología y Alergia, Hospital Universitario Virgen Macarena, Seville, Spain
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Krishnamurthy D, Starkl P, Szalai K, Roth-Walter F, Diesner SC, Mittlboeck M, Mannhalter C, Untersmayr E, Jensen-Jarolim E. Monitoring neutrophils and platelets during casein-induced anaphylaxis in an experimental BALB/c mouse model. Clin Exp Allergy 2012; 42:1119-28. [PMID: 22702510 DOI: 10.1111/j.1365-2222.2012.04012.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND With respect to the cellular players, mast cells and basophils have been well studied in experimental murine systemic anaphylaxis models, but the role of neutrophils and platelets is not fully understood today. OBJECTIVE We tested the hypothesis that neutrophils and platelets might participate in an antigen-induced anaphylaxis model. METHODS BALB/c mice were sensitized intraperitoneally with alum-adsorbed casein. A period of 2 weeks later, mice were challenged with 100 μg casein intravenously and immediate hypersensitivity reactions were assessed by rectal temperature measurements and monitoring the physical activity. Subsequently, leucocytes were counted in the peripheral blood as well as quantified in situ in typical shock organs like lung, liver and spleen, heart and kidney. RESULTS Mice sensitized with casein showed casein-specific IgG1, IgE, and IgG2a. When sensitized mice were specifically challenged with casein they developed immediate hypersensitivity reactions including drop of temperature and reduced activity. Furthermore, pronounced peripheral neutropenia and reduced platelet counts correlated with the severity of the hypersensitivity reactions. In the histological analyses of collected tissues we observed lung interstitial neutrophilia using Gr-1 staining. These events occurred specifically in mice sensitized and challenged with casein, in contrast to control groups. CONCLUSIONS On the basis of our data we suggest that in addition to mast cells and basophils, neutrophils and platelets participate in the anaphylactic response in this BALB/c mouse model. Platelet and neutrophils expressing relevant immunoglobulin receptors may therefore have a synergistic effect with allergen specific IgE as well as IgG antibodies in food-induced anaphylaxis. We suggest that management of these cells could be of clinical importance to handle anaphylaxis.
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Affiliation(s)
- D Krishnamurthy
- Division of Comparative Immunology and Oncology, Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Vienna, Austria
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Fc-epsilon-RI, the high affinity IgE-receptor, is robustly expressed in the upper gastrointestinal tract and modulated by mucosal inflammation. PLoS One 2012; 7:e42066. [PMID: 22848703 PMCID: PMC3407106 DOI: 10.1371/journal.pone.0042066] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 07/02/2012] [Indexed: 12/22/2022] Open
Abstract
Background The role of the high affinity IgE receptor, FcεRI, in IgE-mediated immune responses of the gastrointestinal (GI) mucosa is poorly understood. Currently, a detailed characterization of FcεRI expression throughout the human gut is lacking. The aim of this study was to define the expression pattern of FcεRI in the GI tract. Methods/Principal Findings We compared FcεRI expression in children with gastritis/esophagitis (n = 10), celiac disease (n = 10), inflammatory bowel disease (IBD) (n = 9), and normal mucosa (n = 5). The α–subunit of FcεRI (FcεRIα), detected by immunohistochemistry, was found on cells infiltrating the mucosa of the esophagus, the stomach, and the duodenum, but was rarely detected in more distal sections of the GI tract. Accordingly, quantitative RT-PCR analysis on esophagus, stomach, duodenum, colon, and rectum biopsies revealed that FcεRIα and -β expression levels decreased towards the distal intestine. mRNA transcripts of the common Fc-receptor-γ chain were present in the entire GI mucosa. Double-immunofluorescence staining of esophageal specimens confirmed that FcεRIα was expressed on intraepithelial mast cells and Langerhans cells. The mRNA expression levels of the α, β, and γ subunits of FcεRI did not correlate with total serum IgE but were associated with mucosal inflammation. Conclusion/Significance Our data define the upper GI tract as the main site for IgE-mediated immune activation via FcεRI. Tissue mRNA levels of FcεRIα are regulated by inflammatory conditions rather than serum IgE, indicating that FcεRI might also play a role in pathologies other than allergy.
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Expression of high-affinity IgE receptor on human peripheral blood dendritic cells in children. PLoS One 2012; 7:e32556. [PMID: 22384272 PMCID: PMC3285694 DOI: 10.1371/journal.pone.0032556] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 02/01/2012] [Indexed: 11/27/2022] Open
Abstract
Background In a mouse model of viral induced atopic disease, expression of FcεRI on dendritic cells is critical. While adult human conventional (cDC) and plasmacytoid (pDC) dendritic cells have been shown to express FcεRI, it is not known if this receptor is expressed in childhood and how its expression is governed by IgE. Methods Following informed consent of subjects (n = 27, aged 12–188 months), peripheral blood was stained for surface expression of CD19, ILT7, CD1c, IgE, FcεRI and analyzed by flow cytometry (cDC: CD19− ILT7− CD1c+; pDC: CD19− ILT7+ CD1c−). Total and specific serum IgE levels to food and inhalant allergens were determined by ImmunoCAP, and the relationship between FcεRI expression on dendritic cells and sensitization, free IgE, cell bound IgE, and age was determined. Results Independent of sensitization status, FcεRI expression was noted on cDC and pDC as early as 12 months of age. Serum IgE level correlated with expression of FcεRI on cDC, but not pDC. Based on the concentration of IgE, a complex relationship was found between surface bound IgE and expression of FcεRI on cDC. pDC exhibited a linear relationship of FcεRI expression and bound IgE that was consistent through all IgE concentrations. Conclusions In children, FcεRI expression on cDC and pDC is modulated differently by serum and cell bound IgE. IgE governance of FcεRI expression on cDC depends upon a complex relationship. Further studies are needed to determine the functional roles of FcεRI on cDC and pDC.
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Platzer B, Ruiter F, van der Mee J, Fiebiger E. Soluble IgE receptors--elements of the IgE network. Immunol Lett 2011; 141:36-44. [PMID: 21920387 DOI: 10.1016/j.imlet.2011.08.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 08/15/2011] [Accepted: 08/27/2011] [Indexed: 12/22/2022]
Abstract
Soluble isoforms of three human IgE Fc receptors, namely FcεRI, FcεRII, and galectin-3, can be found in serum. These soluble IgE receptors are a diverse family of proteins unified by the characteristic of interacting with IgE in the extracellular matrix. A truncated form of the alpha-chain of FcεRI, the high affinity IgE receptor, has recently been described as a soluble isoform (sFcεRI). Multiple soluble isoforms of CD23 (sCD23), the low affinity IgE receptor also known as FcεRII, are generated via different mechanisms of extracellular and intracellular proteolysis. The second low affinity IgE receptor, galectin-3, only exists as a secretory protein. We here discuss the physiological roles of these three soluble IgE receptors as elements of the human IgE network. Additionally, we review the potential and current use of sFcεRI, sCD23, and galectin-3 as biomarkers in human disease.
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Affiliation(s)
- Barbara Platzer
- Division of Gastroenterology and Nutrition, Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States
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Lexmond W, der Mee JV, Ruiter F, Platzer B, Stary G, Yen EH, Dehlink E, Nurko S, Fiebiger E. Development and validation of a standardized ELISA for the detection of soluble Fc-epsilon-RI in human serum. J Immunol Methods 2011; 373:192-9. [PMID: 21903095 DOI: 10.1016/j.jim.2011.08.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 08/22/2011] [Accepted: 08/22/2011] [Indexed: 11/30/2022]
Abstract
The aim of this study was to develop a standardized enzyme-linked immunosorbent assay (ELISA) for detection of human soluble Fc-epsilon-RI (sFcεRI), a serum isoform of the high affinity IgE receptor. A recombinant version of sFcεRI was produced in baculovirus and used as standard. ELISA plates were coated with anti-mouse IgG followed by incubation with the monoclonal capture antibody CRA1. This FcεRI-alpha-specific antibody binds to the stalk region of the protein and does not inhibit IgE-binding. After incubation with standards or serum samples, plates were incubated with chimeric IgE followed by detection with horseradish peroxidase conjugated anti-human IgE. Enzymatic activity was visualized with (3,3',5,5')-tetramethylbenzidine. Specificity was demonstrated by omission of capture or detection reagents. Units (U) of detection were established and the dynamic range of the assay was defined as 10-640 U/ml for a 1/5 serum dilution. Parameters of linearity (R(2)>0.999), matrix interference test (recovery of 70-110%), intra-assay variability (coefficient of variation (CV) <20%) and inter-assay variability (CV <20%) met acceptance criteria for immunoassay validation. Correlation analysis of serum units of sFcεRI measured with the new ELISA and serum IgE levels confirmed earlier published data describing a weak correlation of the two parameters in patients with elevated serum IgE while no correlation in patients with normal serum IgE or the total patient group was found. In summary, we established and validated a standardized ELISA for the detection of sFcεRI. This novel method now allows for comparative analysis of sFcεRI levels in health and disease.
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Affiliation(s)
- Willem Lexmond
- Division of Gastroenterology and Nutrition, Children's Hospital Boston, Boston, MA, USA
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Dehlink E, Platzer B, Baker AH, LaRosa J, Pardo M, Dwyer P, Yen EH, Szépfalusi Z, Nurko S, Fiebiger E. A soluble form of the high affinity IgE receptor, Fc-epsilon-RI, circulates in human serum. PLoS One 2011; 6:e19098. [PMID: 21544204 PMCID: PMC3081330 DOI: 10.1371/journal.pone.0019098] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 03/16/2011] [Indexed: 01/03/2023] Open
Abstract
Soluble IgE receptors are potential in vivo modulators of
IgE-mediated immune responses and are thus important for our basic understanding
of allergic responses. We here characterize a novel soluble version of the
IgE-binding alpha-chain of Fc-epsilon-RI (sFcεRI), the high affinity
receptor for IgE. sFcεRI immunoprecipitates as a protein of ∼40 kDa and
contains an intact IgE-binding site. In human serum, sFcεRI is found as a
soluble free IgE receptor as well as a complex with IgE. Using a newly
established ELISA, we show that serum sFcεRI levels correlate with serum IgE
in patients with elevated IgE. We also show that serum of individuals with
normal IgE levels can be found to contain high levels of sFcεRI. After
IgE-antigen-mediated crosslinking of surface FcεRI, we detect sFcεRI in
the exosome-depleted, soluble fraction of cell culture supernatants. We further
show that sFcεRI can block binding of IgE to FcεRI expressed at the cell
surface. In summary, we here describe the alpha-chain of FcεRI as a
circulating soluble IgE receptor isoform in human serum.
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Affiliation(s)
- Eleonora Dehlink
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
- Department of Pediatrics and Adolescent Medicine, Medical University of
Vienna, Vienna, Austria
| | - Barbara Platzer
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Alexandra H. Baker
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Jessica LaRosa
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Michael Pardo
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Peter Dwyer
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Elizabeth H. Yen
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Zsolt Szépfalusi
- Department of Pediatrics and Adolescent Medicine, Medical University of
Vienna, Vienna, Austria
| | - Samuel Nurko
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
| | - Edda Fiebiger
- Division of Gastroenterology and Nutrition, Department of Pediatrics,
Harvard Medical School, Children's Hospital Boston, Boston, Massachusetts,
United States of America
- * E-mail:
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50
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Abstract
The discovery of immunoglobulin E (IgE) was a breakthrough in the field of Allergy and Immunology. Our understanding of mechanisms of allergic reactions and the role of IgE in these disorders has paralleled to the discovery of treatment modalities for patients with allergy. Apart from allergic diseases, IgE is involved in pathogenesis of other disorders. Much controversy exists about the control of total IgE (tIgE) levels and allergen-specific IgE (sIgE) profiles in allergic individuals. This review aims at giving a comprehensive overview of IgE molecule and discussing the issues related to its importance in clinical setting.
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Affiliation(s)
- M Amarasekera
- Department of Physiology, Faculty of Medicine, University of Kelaniya, Ragama 11010, Sri Lanka
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