1
|
Noble SL, Mules TC, Le Gros G, Inns S. The immunoregulatory potential of eosinophil subsets. Immunol Cell Biol 2024. [PMID: 39269337 DOI: 10.1111/imcb.12819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Revised: 08/19/2024] [Accepted: 08/22/2024] [Indexed: 09/15/2024]
Abstract
Eosinophils have traditionally been viewed as pathological effector cells primarily involved in antiparasitic and allergic immune reactions; however, it is becoming increasingly apparent that eosinophils are multifaceted leukocytes that contribute to a variety of roles in both health and disease. Recent research shows that eosinophils play important immunoregulatory roles across various tissue sites including the gastrointestinal tract, adipose tissue, lung, liver, heart, muscles, thymus and bone marrow. With recent advances in our knowledge and appreciation of eosinophil immunoregulatory functions at these tissue sites, as well as emerging research demonstrating the existence of distinct subsets of eosinophils, a review of this topic is timely. Although some questions remain regarding eosinophil function and heterogeneity, this review summarizes the contemporary understanding of the immunoregulatory roles of eosinophils across various tissues and discusses the latest research on eosinophil heterogeneity and subsets.
Collapse
Affiliation(s)
- Sophia-Louise Noble
- Malaghan Institute of Medical Research, Wellington, New Zealand
- University of Otago, Wellington, New Zealand
| | - Thomas C Mules
- Malaghan Institute of Medical Research, Wellington, New Zealand
- University of Otago, Wellington, New Zealand
- Te Whatu Ora, Capital Coast and Hutt Valley, Wellington, New Zealand
| | - Graham Le Gros
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Stephen Inns
- University of Otago, Wellington, New Zealand
- Te Whatu Ora, Capital Coast and Hutt Valley, Wellington, New Zealand
| |
Collapse
|
2
|
Wilson GE, Gautam S, Chupp GL. Does Eosinophil Heterogeneity Translate into Functional Diversity? A Review of the Evolving Paradigm of Eosinophil Heterogeneity in Asthma. Biomedicines 2024; 12:2011. [PMID: 39335525 DOI: 10.3390/biomedicines12092011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 08/19/2024] [Accepted: 08/24/2024] [Indexed: 09/30/2024] Open
Abstract
This review provides an overview of evidence supporting the existence of distinct homeostatic and inflammatory eosinophil subpopulations in health and disease. Particular emphasis is placed on describing the phenotypic and functional roles of these eosinophil subtypes in asthma, as well as the phenotypic changes induced by clinical therapy with the anti-IL-5 biologic agent, mepolizumab. Improved understanding of distinct eosinophil phenotypes may enable targeting of select subpopulations in the treatment of patients with type 2 inflammatory diseases such as asthma.
Collapse
Affiliation(s)
- Gabriella E Wilson
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA
| | - Samir Gautam
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA
| | - Geoffrey L Chupp
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA
| |
Collapse
|
3
|
Pascal M, Bax HJ, Bergmann C, Bianchini R, Castells M, Chauhan J, De Las Vecillas L, Hartmann K, Álvarez EI, Jappe U, Jimenez-Rodriguez TW, Knol E, Levi-Schaffer F, Mayorga C, Poli A, Redegeld F, Santos AF, Jensen-Jarolim E, Karagiannis SN. Granulocytes and mast cells in AllergoOncology-Bridging allergy to cancer: An EAACI position paper. Allergy 2024; 79:2319-2345. [PMID: 39036854 DOI: 10.1111/all.16246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/23/2024] [Accepted: 07/11/2024] [Indexed: 07/23/2024]
Abstract
Derived from the myeloid lineage, granulocytes, including basophils, eosinophils, and neutrophils, along with mast cells, play important, often disparate, roles across the allergic disease spectrum. While these cells and their mediators are commonly associated with allergic inflammation, they also exhibit several functions either promoting or restricting tumor growth. In this Position Paper we discuss common granulocyte and mast cell features relating to immunomodulatory functions in allergy and in cancer. We highlight key mechanisms which may inform cancer treatment and propose pertinent areas for future research. We suggest areas where understanding the communication between granulocytes, mast cells, and the tumor microenvironment, will be crucial for identifying immune mechanisms that may be harnessed to counteract tumor development. For example, a comprehensive understanding of allergic and immune factors driving distinct neutrophil states and those mechanisms that link mast cells with immunotherapy resistance, might enable targeted manipulation of specific subpopulations, leading to precision immunotherapy in cancer. We recommend specific areas of investigation in AllergoOncology and knowledge exchange across disease contexts to uncover pertinent reciprocal functions in allergy and cancer and allow therapeutic manipulation of these powerful cell populations. These will help address the unmet needs in stratifying and managing patients with allergic diseases and cancer.
Collapse
Affiliation(s)
- Mariona Pascal
- Immunology Department, CDB, Hospital Clínic de Barcelona; Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Spain
- Department of Medicine, Universitat de Barcelona, Barcelona, Spain
- RETICS Asma, reacciones adversas y alérgicas (ARADYAL) and RICORS Red De Enfermedades Inflamatorias (REI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Heather J Bax
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences & KHP Centre for Translational Medicine, King's College London, London, UK
| | - Christoph Bergmann
- Department of Otorhinolaryngology, RKM740 Interdisciplinary Clinics, Düsseldorf, Germany
| | - Rodolfo Bianchini
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, Vienna, Austria
| | - Mariana Castells
- Division of Allergy and Clinical Immunology, Drug Hypersensitivity and Desensitization Center, Mastocytosis Center, Brigham and Women's Hospital; Harvard Medical School, Boston, USA
| | - Jitesh Chauhan
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences & KHP Centre for Translational Medicine, King's College London, London, UK
| | | | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland
- Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Elena Izquierdo Álvarez
- Department of Basic Medical Sciences, Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Institute of Applied Molecular Medicine Instituto de Medicina Molecular Aplicada Nemesio Díez (IMMA), Madrid, Spain
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Research Area Chronic Lung Diseases, Research Center Borstel, Leibniz Lung Center, German Center for Lung Research (DZL), Airway Research Center North (ARCN), Borstel, Germany
- Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Luebeck, Luebeck, Germany
| | | | - Edward Knol
- Departments Center of Translational Immunology and Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Francesca Levi-Schaffer
- Pharmacology and Experimental Therapeutics Unit, Institute for Drug Research, School of Pharmacy, Faculty of Medicine. The Hebrew University of Jerusalem, Ein Kerem Campus, Jerusalem, Israel
| | - Cristobalina Mayorga
- RETICS Asma, reacciones adversas y alérgicas (ARADYAL) and RICORS Red De Enfermedades Inflamatorias (REI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Allergy Unit and Research Laboratory, Hospital Regional Universitario de Málaga-HRUM, Instituto de investigación Biomédica de Málaga -IBIMA-Plataforma BIONAND, Málaga, Spain
| | - Aurélie Poli
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Frank Redegeld
- Division of Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - 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
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Erika Jensen-Jarolim
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, Vienna, Austria
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences & KHP Centre for Translational Medicine, King's College London, London, UK
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, UK
| |
Collapse
|
4
|
Tang M, Charbit AR, Johansson MW, Jarjour NN, Denlinger LC, Raymond WW, Peters MC, Dunican EM, Castro M, Sumino K, Erzurum SC, Comhair SA, Moore WC, Levy BD, Israel E, Phipatanakul W, Phillips BR, Mauger DT, Bleecker ER, Wenzel SE, Fajt ML, Woodruff PG, Hastie AT, Fahy JV. Utility of eosinophil peroxidase as a biomarker of eosinophilic inflammation in asthma. J Allergy Clin Immunol 2024; 154:580-591.e6. [PMID: 38663815 DOI: 10.1016/j.jaci.2024.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 02/26/2024] [Accepted: 03/06/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND The relative utility of eosinophil peroxidase (EPX) and blood and sputum eosinophil counts as disease biomarkers in asthma is uncertain. OBJECTIVE We sought to determine the utility of EPX as a biomarker of systemic and airway eosinophilic inflammation in asthma. METHODS EPX protein was measured by immunoassay in serum and sputum in 110 healthy controls to establish a normal reference range and in repeated samples of serum and sputum collected during 3 years of observation in 480 participants in the Severe Asthma Research Program 3. RESULTS Over 3 years, EPX levels in patients with asthma were higher than normal in 27% to 31% of serum samples and 36% to 53% of sputum samples. Eosinophils and EPX correlated better in blood than in sputum (rs values of 0.74 and 0.43, respectively), and high sputum EPX levels occurred in 27% of participants with blood eosinophil counts less than 150 cells/μL and 42% of participants with blood eosinophil counts between 150 and 299 cells/μL. Patients with persistently high sputum EPX values for 3 years were characterized by severe airflow obstruction, frequent exacerbations, and high mucus plug scores. In 59 patients with asthma who started mepolizumab during observation, serum EPX levels normalized in 96% but sputum EPX normalized in only 49%. Lung function remained abnormal even when sputum EPX normalized. CONCLUSIONS Serum EPX is a valid protein biomarker of systemic eosinophilic inflammation in asthma, and sputum EPX levels are a more sensitive biomarker of airway eosinophilic inflammation than sputum eosinophil counts. Eosinophil measures in blood frequently miss airway eosinophilic inflammation, and mepolizumab frequently fails to normalize airway eosinophilic inflammation even though it invariably normalizes systemic eosinophilic inflammation.
Collapse
Affiliation(s)
- Monica Tang
- University of California San Francisco, San Francisco, Calif
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - David T Mauger
- Pennsylvania State University College of Medicine, Hershey, Pa
| | | | | | | | | | | | - John V Fahy
- University of California San Francisco, San Francisco, Calif.
| |
Collapse
|
5
|
Gauvreau GM, Sehmi R, FitzGerald JM, Leigh R, Cockcroft DW, Davis BE, Mayers I, Boulet LP, Al-Sajee D, Salter BM, Cusack RP, Ho T, Whetstone CE, Alsaji N, Satia I, Killian KJ, Mitchell PD, Magee IP, Bergeron C, Bhutani M, Werkström V, Durżyński T, Shoemaker K, Katial RK, Jison M, Newbold P, McCrae C, O'Byrne PM. Benralizumab for allergic asthma: a randomised, double-blind, placebo-controlled trial. Eur Respir J 2024; 64:2400512. [PMID: 39060015 PMCID: PMC11391094 DOI: 10.1183/13993003.00512-2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/27/2024] [Indexed: 07/28/2024]
Abstract
BACKGROUND Benralizumab induces rapid and near-complete depletion of eosinophils from blood and lung tissue. We investigated whether benralizumab could attenuate the allergen-induced late asthmatic response (LAR) in participants with allergic asthma. METHODS Participants with allergic asthma who demonstrated increased sputum eosinophils and LAR at screening were randomised to benralizumab 30 mg or matched placebo given every 4 weeks for 8 weeks (3 doses). Allergen challenges were performed at weeks 9 and 12 when blood, sputum, bone marrow and bronchial tissue eosinophils and LAR were assessed. RESULTS 46 participants (mean age 30.9 years) were randomised to benralizumab (n=23) or placebo (n=23). Eosinophils were significantly reduced in the benralizumab group compared with placebo in blood at 4 weeks and sputum and bone marrow at 9 weeks after treatment initiation. At 7 h after an allergen challenge at week 9, sputum eosinophilia was significantly attenuated in the benralizumab group compared to placebo (least squares mean difference -5.81%, 95% CI -10.69- -0.94%; p=0.021); however, the LAR was not significantly different (least squares mean difference 2.54%, 95% CI 3.05-8.12%; p=0.363). Adverse events were reported for seven (30.4%) and 14 (60.9%) participants in the benralizumab and placebo groups, respectively. CONCLUSION Benralizumab administration over 8 weeks resulted in a significant attenuation of blood, bone marrow and sputum eosinophilia in participants with mild allergic asthma; however, there was no change in the LAR, suggesting that eosinophils alone are not a key component of allergen-induced bronchoconstriction.
Collapse
Affiliation(s)
- Gail M Gauvreau
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Roma Sehmi
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - J Mark FitzGerald
- Vancouver General Hospital and University of British Columbia, Vancouver, BC, Canada
- J.M. Fitzgerald passed away in early 2022; all authors agreed to his inclusion as an author
| | | | | | - Beth E Davis
- University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Louis-Philippe Boulet
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Québec City, QC, Canada
| | - Dhuha Al-Sajee
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Brittany M Salter
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Ruth P Cusack
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Terence Ho
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | | | - Nadia Alsaji
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Imran Satia
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Kieran J Killian
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | | | - Iain P Magee
- University of Saskatchewan, Saskatoon, SK, Canada
| | - Celine Bergeron
- Vancouver General Hospital and University of British Columbia, Vancouver, BC, Canada
| | | | | | | | | | | | | | | | | | - Paul M O'Byrne
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| |
Collapse
|
6
|
Zhu C, Weng Q, Gao S, Li F, Li Z, Wu Y, Wu Y, Li M, Zhao Y, Han Y, Lu W, Qin Z, Yu F, Lou J, Ying S, Shen H, Chen Z, Li W. TGF-β signaling promotes eosinophil activation in inflammatory responses. Cell Death Dis 2024; 15:637. [PMID: 39214980 PMCID: PMC11364686 DOI: 10.1038/s41419-024-07029-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 08/17/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
Eosinophils, traditionally associated with allergic phenomena, play a pivotal role in inflammatory responses. Despite accumulating evidence suggesting their pro-inflammatory function upon activation, the underlying mechanisms governing eosinophil activation remain incompletely characterized. In this study, we investigate the local activation of pulmonary and colon eosinophils within the inflammatory microenvironment. Leveraging transcriptional sequencing, we identify TGF-β as a putative regulator of eosinophil activation, leading to the secretion of granule proteins, including peroxidase. Genetic deletion of TGF-β receptors on eosinophils resulted in the inhibition of peroxidase synthesis, affirming the significance of TGF-β signaling in eosinophil activation. Using models of HDM-induced asthma and DSS-induced colitis, we demonstrate the indispensability of TGF-β-driven eosinophil activation in both disease contexts. Notably, while TGF-β signaling did not significantly influence asthmatic inflammation, its knockout conferred protection against experimental colitis. This study delineates a distinct pattern of eosinophil activation within inflammatory responses, highlighting the pivotal role of TGF-β signaling in regulating eosinophil behavior. These findings deepen our comprehension of eosinophil-related pathophysiology and may pave the way for targeted therapeutic approaches in allergic and inflammatory diseases.
Collapse
Affiliation(s)
- Chen Zhu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qingyu Weng
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shenwei Gao
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fei Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhouyang Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yinfang Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yanping Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Miao Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yun Zhao
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yinling Han
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Weina Lu
- Surgery Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhongnan Qin
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fangyi Yu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jiafei Lou
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Songmin Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Huahao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
- State Key Lab for Respiratory Diseases, Guangzhou, Guangdong, China.
| | - Zhihua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
| | - Wen Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
| |
Collapse
|
7
|
Moore KM, Foster SL, Kar M, Floyd KA, Elrod EJ, Williams ME, Velden JV, Ellis M, Malik A, Wali B, Lapp S, Metz A, Bosinger SE, Menachery VD, Seder RA, Amara RR, Kohlmeier JE, Grakoui A, Suthar MS. Eosinophils protect against SARS-CoV-2 following a vaccine breakthrough infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.08.607190. [PMID: 39211190 PMCID: PMC11361157 DOI: 10.1101/2024.08.08.607190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Waning immunity and the emergence of immune evasive SARS-CoV-2 variants jeopardize vaccine efficacy leading to breakthrough infections. We have previously shown that innate immune cells play a critical role in controlling SARS-CoV-2. To investigate the innate immune response during breakthrough infections, we modeled breakthrough infections by challenging low-dose vaccinated mice with a vaccine-mismatched SARS-CoV-2 Beta variant. We found that low-dose vaccinated infected mice had a 2-log reduction in lung viral burden, but increased immune cell infiltration in the lung parenchyma, characterized by monocytes, monocyte-derived macrophages, and eosinophils. Single cell RNA-seq revealed viral RNA was highly associated with eosinophils that corresponded to a unique IFN-γ biased signature. Antibody-mediated depletion of eosinophils in vaccinated mice resulted in increased virus replication and dissemination in the lungs, demonstrating that eosinophils in the lungs are protective during SARS-CoV-2 breakthrough infections. These results highlight the critical role for the innate immune response in vaccine mediated protection against SARS-CoV-2.
Collapse
|
8
|
Wilson GE, Knight J, Liu Q, Shelar A, Stewart E, Wang X, Yan X, Sanders J, Visness C, Gill M, Gruchalla R, Liu AH, Kattan M, Khurana Hershey GK, Togias A, Becker PM, Altman MC, Busse WW, Jackson DJ, Montgomery RR, Chupp GL. Activated sputum eosinophils associated with exacerbations in children on mepolizumab. J Allergy Clin Immunol 2024; 154:297-307.e13. [PMID: 38485057 PMCID: PMC11305967 DOI: 10.1016/j.jaci.2024.01.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/22/2023] [Accepted: 01/30/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND MUPPITS-2 was a randomized, placebo-controlled clinical trial that demonstrated mepolizumab (anti-IL-5) reduced exacerbations and blood and airway eosinophils in urban children with severe eosinophilic asthma. Despite this reduction in eosinophilia, exacerbation risk persisted in certain patients treated with mepolizumab. This raises the possibility that subpopulations of airway eosinophils exist that contribute to breakthrough exacerbations. OBJECTIVE We aimed to determine the effect of mepolizumab on airway eosinophils in childhood asthma. METHODS Sputum samples were obtained from 53 MUPPITS-2 participants. Airway eosinophils were characterized using mass cytometry and grouped into subpopulations using unsupervised clustering analyses of 38 surface and intracellular markers. Differences in frequency and immunophenotype of sputum eosinophil subpopulations were assessed based on treatment arm and frequency of exacerbations. RESULTS Median sputum eosinophils were significantly lower among participants treated with mepolizumab compared with placebo (58% lower, 0.35% difference [95% CI 0.01, 0.74], P = .04). Clustering analysis identified 3 subpopulations of sputum eosinophils with varied expression of CD62L. CD62Lint and CD62Lhi eosinophils exhibited significantly elevated activation marker and eosinophil peroxidase expression, respectively. In mepolizumab-treated participants, CD62Lint and CD62Lhi eosinophils were more abundant in participants who experienced exacerbations than in those who did not (100% higher for CD62Lint, 0.04% difference [95% CI 0.0, 0.13], P = .04; 93% higher for CD62Lhi, 0.21% difference [95% CI 0.0, 0.77], P = .04). CONCLUSIONS Children with eosinophilic asthma treated with mepolizumab had significantly lower sputum eosinophils. However, CD62Lint and CD62Lhi eosinophils were significantly elevated in children on mepolizumab who had exacerbations, suggesting that eosinophil subpopulations exist that contribute to exacerbations despite anti-IL-5 treatment.
Collapse
Affiliation(s)
- Gabriella E Wilson
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn
| | - James Knight
- Department of Genetics and Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Conn
| | - Qing Liu
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn
| | - Ashish Shelar
- Department of Genetics and Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Conn
| | - Emma Stewart
- Committee on Immunology, University of Chicago, Chicago, Ill
| | - Xiaomei Wang
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn
| | - Xiting Yan
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn
| | | | | | - Michelle Gill
- Department of Pediatric Infectious Diseases, Washington University in St Louis School of Medicine, St Louis, Mo
| | - Rebecca Gruchalla
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Tex
| | - Andrew H Liu
- Department of Pediatrics, Children's Hospital Colorado and University of Colorado School of Medicine, Aurora, Colo
| | - Meyer Kattan
- Department of Pediatric Pulmonology, Columbia University Irving Medical Center, New York, NY
| | | | - Alkis Togias
- National Institute of Allergy and Infectious Diseases, Bethesda, Md
| | - Patrice M Becker
- National Institute of Allergy and Infectious Diseases, Bethesda, Md
| | | | - William W Busse
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wis
| | - Daniel J Jackson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wis
| | - Ruth R Montgomery
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn
| | - Geoffrey L Chupp
- Department of Internal Medicine, Yale School of Medicine, New Haven, Conn.
| |
Collapse
|
9
|
Lemiere C, Martin JG. Can sputum eosinophils predict a poor response to mepolizumab? J Allergy Clin Immunol 2024; 154:280-281. [PMID: 38663816 DOI: 10.1016/j.jaci.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/08/2024]
Affiliation(s)
- Catherine Lemiere
- CIUSS du Nord de l'île de Montréal, Université de Montréal, Montréal, Québec, Canada.
| | - James G Martin
- McGill University Health Centre Research Institute and McGill University, Montréal, Québec, Canada
| |
Collapse
|
10
|
Bourdin A, Chupp G, Jackson DJ, Cohen D, Emerath U, Shavit A, Kurdyukova Y, Menzies-Gow A. MELTEMI and COLUMBA: 5-Year Comparative Safety Analysis of Benralizumab and Mepolizumab. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024; 12:2074-2083.e4. [PMID: 38677588 DOI: 10.1016/j.jaip.2024.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND Benralizumab and mepolizumab are interleukin (IL)-5Rα/interleukin-5-targeted monoclonal antibodies indicated as add-on treatments for patients with uncontrolled severe eosinophilic asthma (SEA). OBJECTIVE To evaluate and compare the safety of benralizumab and mepolizumab among patients with SEA treated in MELTEMI and COLUMBA open-label, long-term extension studies, respectively. METHODS MELTEMI was an extension study of benralizumab every 4 weeks (q4w) or every 8 weeks (q8w) for adults (aged 18-75 y) with SEA. MELTEMI participants transitioned from the BORA extension, preceded by participation in 1 of 3 placebo-controlled studies (SIROCCO, CALIMA, or ZONDA). COLUMBA was an extension study of mepolizumab for patients (aged ≥ 12 y) with SEA who transitioned from the dose-ranging DREAM study. Safety endpoints were presented as drug exposure patient-years (MELTEMI, q4w 784.28, q8w 797.03; COLUMBA 1,201) for nonserious adverse events, serious adverse events, and infections; malignancies were counted numerically. RESULTS This analysis included 446 MELTEMI patients (benralizumab q4w 220; benralizumab q8w 226) and 347 COLUMBA patients (mepolizumab q4w). Viral upper respiratory tract infection was the most common nonserious adverse event in both studies (MELTEMI q8w 46.5%; q4w 47.3%; COLUMBA, 48.7%). Asthma-related events were the most common serious adverse events in both studies: MELTEMI 8.0% (q8w) and 8.6% (q4w) and COLUMBA 9.5%. Serious infections included pneumonia (MELTEMI q8w, 2 [0.9%]; COLUMBA, 6 [1.7%]); cellulitis (MELTEMI q8w, 1 [0.4%]; COLUMBA, 2 [0.6%]); and respiratory tract infections (COLUMBA, 2 [0.6%]). COLUMBA reported 6 malignancies and MELTEMI reported 4 malignancies in each group. CONCLUSIONS This analysis demonstrated generally similar safety events between mepolizumab and benralizumab in patients with SEA.
Collapse
Affiliation(s)
- Arnaud Bourdin
- Université de Montpellier, CHU Montpellier, PhyMedExp, INSERM, CNRS, Montpellier, France.
| | | | - David J Jackson
- Guy's Severe Asthma Centre, Guy's and St. Thomas' NHS Trust, London, UK; School of Immunology and Microbial Sciences, King's College London, London, UK
| | - David Cohen
- BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, Md
| | - Ulrika Emerath
- Biopharmaceuticals Medical, AstraZeneca, Gothenburg, Sweden
| | - Anat Shavit
- Biopharmaceuticals Medical, Respiratory and Immunology, AstraZeneca, Cambridge, UK
| | | | - Andrew Menzies-Gow
- Biopharmaceuticals Medical, Respiratory and Immunology, AstraZeneca, Cambridge, UK
| |
Collapse
|
11
|
Lokwani R, Fertil D, Hartigan DR, Josyula A, Ngo TB, Sadtler K. Eosinophils Respond to Extracellular Matrix Treated Muscle Injuries but are Not Required for Macrophage Polarization. Adv Healthc Mater 2024:e2400134. [PMID: 39072935 DOI: 10.1002/adhm.202400134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 06/10/2024] [Indexed: 07/30/2024]
Abstract
The immune response to decellularized extracellular matrix (ECM) muscle injury is characterized by Th2 T cells, Tregs, M2-like macrophages, and an abundance of eosinophils. Eosinophils have previously been described as mediators of muscle regeneration but inhibit skin wound healing. In addition to response to wounding, a large number of eosinophils respond to biomaterial-treated muscle injury, specifically in response to decellularized ECM. ECM treatment of muscle wounds has been associated with positive outcomes in tissue regeneration, but the detailed mechanisms of action are still being evaluated. Here, this work investigates the role of these eosinophils in terms of their immunologic phenotype and subsequent effect on the local tissue microenvironment. These cells have a mixed phenotype showing both type-2 and regulatory gene upregulation and but are not required for macrophage polarization. Beyond the local tissue, ECM treatment is seen to induce a transient flux of eosinophils to the lungs but prevented a trauma-associated neutrophilia in the lungs of injured mice. This work believes this local and systemic immunomodulation contributes to the regenerative effects of the material and such distal tissue effects should be considered in therapeutic design and implementation.
Collapse
Affiliation(s)
- Ravi Lokwani
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Daphna Fertil
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Devon R Hartigan
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Aditya Josyula
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Tran B Ngo
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Kaitlyn Sadtler
- Section on Immunoengineering, Center for Biomedical Engineering and Technology Acceleration, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| |
Collapse
|
12
|
Schworer SA, Olbrich CL, Larsen LD, Howard E, Liu L, Koyama K, Spencer LA. Notch 2 signaling contributes to intestinal eosinophil adaptations in steady state and tissue burden following oral allergen challenge. J Leukoc Biol 2024; 116:379-391. [PMID: 38789100 PMCID: PMC11271981 DOI: 10.1093/jleuko/qiae122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 04/02/2024] [Accepted: 04/21/2024] [Indexed: 05/26/2024] Open
Abstract
Eosinophils not only function as inflammatory effectors in allergic diseases, but also contribute to tissue homeostasis in steady state. Emerging data are revealing tissue eosinophils to be adaptive cells, imprinted by their local tissue microenvironment and exhibiting distinct functional phenotypes that may contribute to their homeostatic vs. inflammatory capacities. However, signaling pathways that regulate eosinophil tissue adaptations remain elusive. Notch signaling is an evolutionarily conserved pathway that mediates differential cell fate programming of both pre- and postmitotic immune cells. This study investigated a role for notch receptor 2 signaling in regulating eosinophil functions and tissue phenotype in both humans and mice. Notch 2 receptors were constitutively expressed and active in human blood eosinophils. Pharmacologic neutralization of notch 2 in ex vivo stimulated human eosinophils altered their activated transcriptome and prevented their cytokine-mediated survival. Genetic ablation of eosinophil-expressed notch 2 in mice diminished steady-state intestine-specific eosinophil adaptations and impaired their tissue retention in a food allergic response. In contrast, notch 2 had no effect on eosinophil phenotype or tissue inflammation within the context of allergic airways inflammation, suggesting that notch 2-dependent regulation of eosinophil phenotype and function is specific to the gut. These data reveal notch 2 signaling as a cell-intrinsic mechanism that contributes to eosinophil survival, function, and intestine-specific adaptations. The notch 2 pathway may represent a viable strategy to reprogram eosinophil functional phenotypes in gastrointestinal eosinophil-associated diseases.
Collapse
Affiliation(s)
- Stephen A Schworer
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Marsico Lung Institute, 125 Mason Farm Road, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Courtney L Olbrich
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, and Mucosal Inflammation Program, 12700 E. 19th Ave, University of Colorado School of Medicine, Aurora, CO 80045, United States
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, 13123 E. 16th Ave, Children's Hospital Colorado, Aurora, CO 80045, United States
| | - Leigha D Larsen
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, and Mucosal Inflammation Program, 12700 E. 19th Ave, University of Colorado School of Medicine, Aurora, CO 80045, United States
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, 13123 E. 16th Ave, Children's Hospital Colorado, Aurora, CO 80045, United States
| | - Emily Howard
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
| | - Linying Liu
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
| | - Kenya Koyama
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
- Department of Respiratory Medicine and Clinical Immunology, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Shimotsugagun, Tochigi 321-0293, Japan
| | - Lisa A Spencer
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215, United States
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, and Mucosal Inflammation Program, 12700 E. 19th Ave, University of Colorado School of Medicine, Aurora, CO 80045, United States
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, 13123 E. 16th Ave, Children's Hospital Colorado, Aurora, CO 80045, United States
| |
Collapse
|
13
|
Bowen JL, Keck K, Baruah S, Nguyen KH, Thurman AL, Pezzulo AA, Klesney-Tait J. Eosinophil expression of triggering receptor expressed on myeloid cells 1 (TREM-1) restricts type 2 lung inflammation. J Leukoc Biol 2024; 116:409-423. [PMID: 38547428 DOI: 10.1093/jleuko/qiae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/20/2024] [Accepted: 02/16/2024] [Indexed: 07/27/2024] Open
Abstract
Asthma affects 25 million Americans, and recent advances in treatment are effective for only a portion of severe asthma patients. TREM-1, an innate receptor that canonically amplifies inflammatory signaling in neutrophils and monocytes, plays a central role in regulating lung inflammation. It is unknown how TREM-1 contributes to allergic asthma pathology. Utilizing a murine model of asthma, flow cytometry revealed TREM-1+ eosinophils in the lung tissue and airway during allergic airway inflammation. TREM-1 expression was restricted to recruited, inflammatory eosinophils. Expression was induced on bone marrow-derived eosinophils by incubation with interleukin 33, lipopolysaccharide, or granulocyte-macrophage colony-stimulating factor. Compared to TREM-1- airway eosinophils, TREM-1+ eosinophils were enriched for proinflammatory gene sets, including migration, respiratory burst, and cytokine production. Unexpectedly, eosinophil-specific ablation of TREM-1 exacerbated airway interleukin (IL) 5 production, airway MUC5AC production, and lung tissue eosinophil accumulation. Further investigation of transcriptional data revealed apoptosis and superoxide generation-related gene sets were enriched in TREM-1+ eosinophils. Consistent with these findings, annexin V and caspase-3/7 staining demonstrated higher rates of apoptosis among TREM-1+ eosinophils compared to TREM-1- eosinophils in the inflammatory airway. In vitro, Trem1/3-/- bone marrow-derived eosinophils consumed less oxygen than wild-type in response to phorbol myristate acetate, suggesting that TREM-1 promotes superoxide generation in eosinophils. These data reveal protein-level expression of TREM-1 by eosinophils, define a population of TREM-1+ inflammatory eosinophils, and demonstrate that eosinophil TREM-1 restricts key features of type 2 lung inflammation.
Collapse
Affiliation(s)
- Jayden L Bowen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
- Medical Scientist Training Program, University of Iowa Carver College of Medicine, 375 Newton Road, Iowa City, IA 52242, USA
- Interdisciplinary Graduate Program in Immunology, University of Iowa Carver College of Medicine, 501 Newton Rd, Iowa City, IA 52242, USA
| | - Kathy Keck
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
| | - Sankar Baruah
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
- Protein and Crystallography Facility, University of Iowa Carver College of Medicine, 51 Newton Rd, Iowa City, IA 52242, USA
| | - Kathy H Nguyen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
- Medical Scientist Training Program, University of Iowa Carver College of Medicine, 375 Newton Road, Iowa City, IA 52242, USA
| | - Andrew L Thurman
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
| | - Alejandro A Pezzulo
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA
| |
Collapse
|
14
|
Chang LA, Schotsaert M. Ally, adversary, or arbitrator? The context-dependent role of eosinophils in vaccination for respiratory viruses and subsequent breakthrough infections. J Leukoc Biol 2024; 116:224-243. [PMID: 38289826 PMCID: PMC11288382 DOI: 10.1093/jleuko/qiae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/12/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
Eosinophils are a critical type of immune cell and central players in type 2 immunity. Existing literature suggests that eosinophils also can play a role in host antiviral responses, typically type 1 immune events, against multiple respiratory viruses, both directly through release of antiviral mediators and indirectly through activation of other effector cell types. One way to prime host immune responses toward effective antiviral responses is through vaccination, where typically a type 1-skewed immunity is desirable in the context of intracellular pathogens like respiratory viruses. In the realm of breakthrough respiratory viral infection in vaccinated hosts, an event in which virus can still establish productive infection despite preexisting immunity, eosinophils are most prominently known for their link to vaccine-associated enhanced respiratory disease upon natural respiratory syncytial virus infection. This was observed in a pediatric cohort during the 1960s following vaccination with formalin-inactivated respiratory syncytial virus. More recent research has unveiled additional roles of the eosinophil in respiratory viral infection and breakthrough infection. The specific contribution of eosinophils to the quality of vaccine responses, vaccine efficacy, and antiviral responses to infection in vaccinated hosts remains largely unexplored, especially regarding their potential roles in protection. On the basis of current findings, we will speculate upon the suggested function of eosinophils and consider the many potential ways by which eosinophils may exert protective and pathological effects in breakthrough infections. We will also discuss how to balance vaccine efficacy with eosinophil-related risks, as well as the use of eosinophils and their products as potential biomarkers of vaccine efficacy or adverse events.
Collapse
Affiliation(s)
- Lauren A Chang
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, United States
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1124, New York, NY 10029, United States
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1124, New York, NY 10029, United States
| | - Michael Schotsaert
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1124, New York, NY 10029, United States
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1124, New York, NY 10029, United States
- Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, Box 1630, New York, NY 10029, United States
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, United States
| |
Collapse
|
15
|
Denburg JA, O'Byrne PM, Gauvreau GM. Eosinophil plasticity and diversity: proceedings of the 2023 International Eosinophil Society Symposium. J Leukoc Biol 2024; 116:244-246. [PMID: 38626296 DOI: 10.1093/jleuko/qiae089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/31/2024] [Accepted: 02/26/2024] [Indexed: 04/18/2024] Open
Abstract
This issue highlights and details the program and scientific presentations at the International Eosinophil Society's 12th biennial symposium, which was held in Hamilton, Ontario, Canada, in July 2023. The meeting included sessions on regulation of eosinophil development; cell death, stress, and autophagy in eosinophils; local immunity interactions of eosinophils with multiple cell types; eosinophils in host defense; eosinophils and mast cells in gastrointestinal disorders; reciprocal interactions between eosinophils and the microbiome in homeostasis and dysbiosis; and eosinophils in tissue injury and repair and in tumor biology and cancer therapy. There was a mixture of special invited lectures and cutting-edge abstracts on specific aspects of eosinophil science, as well as enlivened pro-con debates on targeting eosinophils with biologics. A major thrust and overarching theme was that eosinophils exhibit remarkable plasticity and heterogeneity in executing their functions both in homeostasis and in pathobiology; there is a new "eo-verse" to understand. We trust that this special volume of the Journal of Leukocyte Biology will be of interest across many disciplines and medical subspecialties in biomedical sciences and demonstrate both the complexity and versatility of the eosinophil in biology and medicine.
Collapse
Affiliation(s)
- Judah A Denburg
- Division of Allergy and Immunology, Department of Medicine, McMaster University, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| | - Paul M O'Byrne
- Division of Respirology, Department of Medicine, McMaster University, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| | - Gail M Gauvreau
- Division of Allergy and Immunology, Department of Medicine, McMaster University, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
- Division of Respirology, Department of Medicine, McMaster University, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| |
Collapse
|
16
|
Michael AN, Pivniouk O, Ezeh PC, Banskar S, Hahn S, DeVries A, O’Connell K, Pivniouk V, Vercelli D. Administration of a bacterial lysate to the airway compartment is sufficient to inhibit allergen-induced lung eosinophilia in germ-free mice. J Leukoc Biol 2024; 116:392-397. [PMID: 38470858 PMCID: PMC11271978 DOI: 10.1093/jleuko/qiae047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
The nexus between eosinophils and microbes is attracting increasing attention. We previously showed that airway administration of sterile microbial products contained in dust collected from traditional dairy farms virtually abrogated bronchoalveolar lavage (BAL) eosinophilia and other cardinal asthma phenotypes in allergen-sensitized specific pathogen-free (SPF) mice. Interestingly, comparable inhibition of allergen-induced BAL eosinophilia and promotion of airway barrier integrity were found upon administration of a sterile, pharmacological-grade bacterial lysate, OM-85, to the airway compartment of allergen-sensitized SPF mice. Here, we asked whether intrinsic properties of airway-delivered microbial products were sufficient to inhibit allergic lung inflammation or whether these effects were mediated by reprogramming of the host microbiota. We compared germ-free (GF) mice and offspring of GF mice associated with healthy mouse gut microbiota and maintained under SPF conditions for multiple generations (Ex-GF mice). These mice were treated intranasally with OM-85 and evaluated in the ovalbumin and Alternaria models of allergic asthma focusing primarily on BAL eosinophilia. Levels of allergen-induced BAL eosinophilia were comparable in GF and conventionalized Ex-GF mice. Airway administration of the OM-85 bacterial lysate was sufficient to inhibit allergen-induced lung eosinophilia in both Ex-GF and GF mice, suggesting that host microbiota are not required for the protective effects of bacterial products in these models and local airway exposure to microbial products is an effective source of protection. OM-85-dependent inhibition of BAL eosinophilia in GF mice was accompanied by suppression of lung type 2 cytokines and eosinophil-attracting chemokines, suggesting that OM-85 may work at least by decreasing eosinophil lung recruitment.
Collapse
Affiliation(s)
- Ashley N Michael
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Oksana Pivniouk
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Peace C Ezeh
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Sunil Banskar
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Seongmin Hahn
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Avery DeVries
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
| | - Kathryn O’Connell
- University Animal Care, University of Arizona, BIO5 Institute, 1657 E Helen Street, Tucson, AZ 85721, United States
| | - Vadim Pivniouk
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
- Department of Cellular and Molecular Medicine, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245044, Tucson AZ 85724-5044, United States
| | - Donata Vercelli
- Asthma and Airway Disease Research Center, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245030, Tucson, AZ 85724, United States
- Department of Cellular and Molecular Medicine, University of Arizona, 1501 N. Campbell Avenue P.O. Box 245044, Tucson AZ 85724-5044, United States
- BIO5 Institute, University of Arizona, 1657 E Helen Street, Tucson, AZ 85721, United States
- Arizona Center for the Biology of Complex Diseases, University of Arizona, BIO5 Institute, University of Arizona, Tucson, AZ 85721, United States
| |
Collapse
|
17
|
Ackerman SJ, Stacy NI. Considerations on the evolutionary biology and functions of eosinophils: what the "haeckel"? J Leukoc Biol 2024; 116:247-259. [PMID: 38736141 PMCID: PMC11288384 DOI: 10.1093/jleuko/qiae109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/27/2024] [Accepted: 04/17/2024] [Indexed: 05/14/2024] Open
Abstract
The origins and evolution of the eosinophilic leukocyte have received only scattered attention since Paul Ehrlich first named this granulocyte. Studies suggest that myeloperoxidase, expressed by granulocytes, and eosinophil peroxidase diverged some 60 to 70 million years ago, but invertebrate to vertebrate evolution of the eosinophil lineage is unknown. Vertebrate eosinophils have been characterized extensively in representative species at light microscopic, ultrastructural, genetic, and biochemical levels. Understanding of eosinophil function continues to expand and includes to date regulation of "Local Immunity And/Or Remodeling/Repair" (the so-called LIAR hypothesis), modulation of innate and adaptive immune responses, maintenance of tissue and metabolic homeostasis, and, under pathologic conditions, inducers of tissue damage, repair, remodeling, and fibrosis. This contrasts with their classically considered primary roles in host defense against parasites and other pathogens, as well as involvement in T-helper 2 inflammatory and immune responses. The eosinophils' early appearance during evolution and continued retention within the innate immune system across taxa illustrate their importance during evolutionary biology. However, successful pregnancies in eosinophil-depleted humans/primates treated with biologics, host immune responses to parasites in eosinophil-deficient mice, and the absence of significant developmental or functional abnormalities in eosinophil-deficient mouse strains under laboratory conditions raise questions of the continuing selective advantages of the eosinophil lineage in mammals and humans. The objectives of this review are to provide an overview on evolutionary origins of eosinophils across the animal kingdom, discuss some of their main functions in the context of potential evolutionary relevance, and highlight the need for further research on eosinophil functions and functional evolution.
Collapse
Affiliation(s)
- Steven J Ackerman
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, MBRB2074, MC669, 900 S. Ashland Ave, Chicago, IL 60607, United States
| | - Nicole I Stacy
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave, Gainesville, FL 32610, United States
| |
Collapse
|
18
|
Bunn KE, Giese-Byrne BG, Pua HH. Th2 cell extracellular vesicles promote eosinophil survival through the cytokine cargo IL-3 and prolong airway eosinophilia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.23.600647. [PMID: 39211207 PMCID: PMC11361019 DOI: 10.1101/2024.07.23.600647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Background Extracellular vesicles (EVs) mediate intercellular communication during immune responses. EVs are abundant in respiratory biofluids, and the composition of EVs in the lung changes during inflammation. Objective We aimed to quantify the contribution of T cells to airway EVs in allergic lung inflammation and ascertain their function during a type 2 inflammatory response. Methods Genetic membrane tagging was combined with single vesicle flow cytometry to quantify T cell EVs in the airways of mice challenged with ovalbumin or house dust mite. EVs were purified from T helper type 2 (Th2) cell cultures and their functions on eosinophils assessed by flow cytometry and RNA sequencing. Th2 cell EVs were instilled into the lungs of mice to determine effects on lung eosinophilia. Finally, the function of an EV protein cargo was tested using inhibitors and blocking antibodies. Results T cell EVs are increased in the airways of mice with induced allergic inflammation. EVs secreted by Th2 cells inhibit apoptosis and induce activating pathways in eosinophils in vitro. This effect depends on re-stimulation through the T cell receptor. Th2 cell EVs prolong eosinophilia in vivo during allergic airway inflammation. Th2 cell EVs carry a potent form of the cytokine IL-3 on their surfaces, which inhibits apoptosis by activating Jak1/2-dependent pro-survival programs in eosinophils. Conclusion Th2 cell EVs promote eosinophil survival and prolong eosinophilia during allergic airway inflammation. This function depends on the EV cargo IL-3, supporting a role for EVs as vehicles of cytokine-based communication in lung inflammation. Key Messages T cells secrete extracellular vesicles in the airway during allergic lung inflammation.Th2 cell extracellular vesicles inhibit eosinophil apoptosis and prolong airway eosinophilia during allergic lung inflammation.IL-3 carried on Th2 cell EVs is a functional cargo, supporting a role for cytokine-carrying EVs as drivers of type 2 inflammation. Capsule summary This study supports that T cell extracellular vesicles may be important drivers of eosinophilic inflammation through the cytokine cargo IL-3, offering new insights into pro-inflammatory signaling in the allergic lung of patients with asthma.
Collapse
|
19
|
Omima Mohammed OMA, Majeed Mohamed Salih OA, Omer IIA, Mohammed YIA, Mohammed OA, Elgadi A, Hemmeda L, Elnaiem W, Mohamed MTA, Ahsan A, Ahmed KAHM. Frequency of Severe Asthma and Its Clinical Phenotypes at the Asthma Clinic in One of the Largest Sudanese Tertiary Pediatric Hospitals: A Cross-Sectional Hospital-Outpatient-Based Study. J Asthma Allergy 2024; 17:693-702. [PMID: 39071162 PMCID: PMC11276857 DOI: 10.2147/jaa.s450379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 07/18/2024] [Indexed: 07/30/2024] Open
Abstract
Background Asthma is one of the most common non-communicable diseases. Childhood asthma has been increasing in Sudan, with a 13-16% prevalence among Khartoum school children. To achieve and maintain good asthma control, proper diagnosis, assessment of severity, and appropriate medication administration are crucial, with phenotyping being a key factor in determining patients' specific treatment. Objective To study the frequency of severe asthma and the distribution of its different phenotypes and to investigate associations between age and gender and different phenotypes of asthma. Methodology This descriptive cross-sectional hospital-based study was conducted in the Asthma Clinic of Mohamed Al-Amin Hamid Pediatrics Hospital. It included 229 patients who were presented to the clinic from September 2021 to April 2022. Data were collected from the patients and/or their caregivers using a modified validated standard questionnaire and were analyzed using SPSS version 26.0. A p-value of 0.05 or less was considered statistically significant. Results In this study of 229 participants, 14.4% had severe asthma, with 44.5% and 41% exhibiting mild and moderate asthma, respectively. Most were effectively managed in steps 2 or 3. The cohort, primarily aged 5 or younger (40.2%) with a male majority (62%), showed a mean diagnosis age of 2.9 ± 2.8 years. Impressively, 90% maintained well-controlled asthma. Within severe asthma cases (87% atopic), 39.4% represented a severe allergic asthma phenotype. Elevated eosinophil counts were noted in 45.5% (serum) and 78.8% (sputum cytology), while 57.6% had normal serum IgE levels. The predominant symptom pattern in severe asthma was episodic multi-trigger wheezing (48.5%). Age and gender displayed no significant association with severe asthma phenotype. Conclusion This study reveals a concerning rise in childhood asthma prevalence in Sudan, emphasizing the importance of tailored treatment strategies. Severe asthma, characterized by atopic eosinophilic involvement, necessitates targeted interventions in pediatric asthma care for specific phenotypes.
Collapse
Affiliation(s)
| | | | - Islamia Ibrahim Ahmed Omer
- Pediatrics and Child Health Department, College of Medicine, Sulaiman Al Rajhi University, Al-Bukayriyah, Qassim Province, Saudi Arabia
| | | | - Omer A Mohammed
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Ammar Elgadi
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Lina Hemmeda
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Walaa Elnaiem
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | | | - Areeba Ahsan
- School of Health Sciences, Foundation University, Islamabad, Pakistan
| | | |
Collapse
|
20
|
Jorssen J, Van Hulst G, Mollers K, Pujol J, Petrellis G, Baptista AP, Schetters S, Baron F, Caers J, Lambrecht BN, Dewals BG, Bureau F, Desmet CJ. Single-cell proteomics and transcriptomics capture eosinophil development and identify the role of IL-5 in their lineage transit amplification. Immunity 2024; 57:1549-1566.e8. [PMID: 38776917 DOI: 10.1016/j.immuni.2024.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 12/07/2023] [Accepted: 04/30/2024] [Indexed: 05/25/2024]
Abstract
The activities, ontogeny, and mechanisms of lineage expansion of eosinophils are less well resolved than those of other immune cells, despite the use of biological therapies targeting the eosinophilia-promoting cytokine interleukin (IL)-5 or its receptor, IL-5Rα. We combined single-cell proteomics and transcriptomics and generated transgenic IL-5Rα reporter mice to revisit eosinophilopoiesis. We reconciled human and murine eosinophilopoiesis and provided extensive cell-surface immunophenotyping and transcriptomes at different stages along the continuum of eosinophil maturation. We used these resources to show that IL-5 promoted eosinophil-lineage expansion via transit amplification, while its deletion or neutralization did not compromise eosinophil maturation. Informed from our resources, we also showed that interferon response factor-8, considered an essential promoter of myelopoiesis, was not intrinsically required for eosinophilopoiesis. This work hence provides resources, methods, and insights for understanding eosinophil ontogeny, the effects of current precision therapeutics, and the regulation of eosinophil development and numbers in health and disease.
Collapse
Affiliation(s)
- Joseph Jorssen
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Glenn Van Hulst
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Kiréna Mollers
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Julien Pujol
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Georgios Petrellis
- Laboratory of Parasitology, FARAH Institute, University of Liege, Faculty of Veterinary Medicine, Avenue de Cureghem 10, 4000 Liege, Belgium
| | - Antonio P Baptista
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Sjoerd Schetters
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Frédéric Baron
- Laboratory of Haematology, GIGA Institute, Faculty of Medicine, Liege University Hospital Centre, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Jo Caers
- Laboratory of Haematology, GIGA Institute, Faculty of Medicine, Liege University Hospital Centre, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Bart N Lambrecht
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium; Department of Pulmonary Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - Benjamin G Dewals
- Laboratory of Parasitology, FARAH Institute, University of Liege, Faculty of Veterinary Medicine, Avenue de Cureghem 10, 4000 Liege, Belgium
| | - Fabrice Bureau
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium
| | - Christophe J Desmet
- Laboratory of Cellular and Molecular Immunology, GIGA Institute, Faculty of Veterinary Medicine, University of Liege, B34 Avenue de l'Hopital 1, 4000 Liege, Belgium.
| |
Collapse
|
21
|
Arnold IC, Munitz A. Spatial adaptation of eosinophils and their emerging roles in homeostasis, infection and disease. Nat Rev Immunol 2024:10.1038/s41577-024-01048-y. [PMID: 38982311 DOI: 10.1038/s41577-024-01048-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/17/2024] [Indexed: 07/11/2024]
Abstract
Eosinophils are bone marrow-derived granulocytes that are traditionally associated with type 2 immune responses, such as those that occur during parasite infections and allergy. Emerging evidence demonstrates the remarkable functional plasticity of this elusive cell type and its pleiotropic functions in diverse settings. Eosinophils broadly contribute to tissue homeostasis, host defence and immune regulation, predominantly at mucosal sites. The scope of their activities primarily reflects the breadth of their portfolio of secreted mediators, which range from cytotoxic cationic proteins and reactive oxygen species to multiple cytokines, chemokines and lipid mediators. Here, we comprehensively review basic eosinophil biology that is directly related to their activities in homeostasis, protective immunity, regeneration and cancer. We examine how dysregulation of these functions contributes to the physiopathology of a broad range of inflammatory diseases. Furthermore, we discuss recent findings regarding the tissue compartmentalization and adaptation of eosinophils, shedding light on the factors that likely drive their functional diversification within tissues.
Collapse
Affiliation(s)
- Isabelle C Arnold
- Institute of Experimental Immunology, University of Zürich, Zürich, Switzerland.
| | - Ariel Munitz
- Department of Clinical Microbiology and Immunology, Faculty of Medical and Health Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel.
| |
Collapse
|
22
|
Sakai C, Matsuyama M, Nakajima M, Matsumura S, Nonaka M, Arai N, Kuramoto K, Yoshida K, Morishima Y, Muratani M, Hizawa N. Blood eosinophil phenotype during treatment with mepolizumab in patients with severe eosinophilic asthma. Allergol Int 2024; 73:473-476. [PMID: 38582716 DOI: 10.1016/j.alit.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/19/2024] [Accepted: 02/27/2024] [Indexed: 04/08/2024] Open
Affiliation(s)
- Chio Sakai
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Masashi Matsuyama
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
| | - Masayuki Nakajima
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Sosuke Matsumura
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Mizu Nonaka
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Naoki Arai
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Kenya Kuramoto
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Kazufumi Yoshida
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuko Morishima
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Masafumi Muratani
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Nobuyuki Hizawa
- Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| |
Collapse
|
23
|
Marchi E, Hinks TSC, Richardson M, Khalfaoui L, Symon FA, Rajasekar P, Clifford R, Hargadon B, Austin CD, MacIsaac JL, Kobor MS, Siddiqui S, Mar JS, Arron JR, Choy DF, Bradding P. The effects of inhaled corticosteroids on healthy airways. Allergy 2024; 79:1831-1843. [PMID: 38686450 PMCID: PMC7616167 DOI: 10.1111/all.16146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/27/2024] [Accepted: 03/19/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND The effects of inhaled corticosteroids (ICS) on healthy airways are poorly defined. OBJECTIVES To delineate the effects of ICS on gene expression in healthy airways, without confounding caused by changes in disease-related genes and disease-related alterations in ICS responsiveness. METHODS Randomized open-label bronchoscopy study of high-dose ICS therapy in 30 healthy adult volunteers randomized 2:1 to (i) fluticasone propionate 500 mcg bd daily or (ii) no treatment, for 4 weeks. Laboratory staff were blinded to allocation. Biopsies and brushings were analysed by immunohistochemistry, bulk RNA sequencing, DNA methylation array and metagenomics. RESULTS ICS induced small between-group differences in blood and lamina propria eosinophil numbers, but not in other immunopathological features, blood neutrophils, FeNO, FEV1, microbiome or DNA methylation. ICS treatment upregulated 72 genes in brushings and 53 genes in biopsies, and downregulated 82 genes in brushings and 416 genes in biopsies. The most downregulated genes in both tissues were canonical markers of type-2 inflammation (FCER1A, CPA3, IL33, CLEC10A, SERPINB10 and CCR5), T cell-mediated adaptive immunity (TARP, TRBC1, TRBC2, PTPN22, TRAC, CD2, CD8A, HLA-DQB2, CD96, PTPN7), B-cell immunity (CD20, immunoglobulin heavy and light chains) and innate immunity, including CD48, Hobit, RANTES, Langerin and GFI1. An IL-17-dependent gene signature was not upregulated by ICS. CONCLUSIONS In healthy airways, 4-week ICS exposure reduces gene expression related to both innate and adaptive immunity, and reduces markers of type-2 inflammation. This implies that homeostasis in health involves tonic type-2 signalling in the airway mucosa, which is exquisitely sensitive to ICS.
Collapse
Affiliation(s)
- Emanuele Marchi
- NIHR Oxford Respiratory BRC and Respiratory Medicine Unit, Experimental Medicine, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, UK
| | - Timothy S C Hinks
- NIHR Oxford Respiratory BRC and Respiratory Medicine Unit, Experimental Medicine, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, UK
| | - Matthew Richardson
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| | - Latifa Khalfaoui
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| | - Fiona A Symon
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| | - Poojitha Rajasekar
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, Nottingham NIHR Biomedical Research Centre, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, UK
| | - Rachel Clifford
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, Nottingham NIHR Biomedical Research Centre, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, UK
| | - Beverley Hargadon
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| | - Cary D Austin
- Genentech, Inc., South San Francisco, California, USA
| | - Julia L MacIsaac
- Edwin S.H. Leong Centre for Healthy Aging, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael S Kobor
- Edwin S.H. Leong Centre for Healthy Aging, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Salman Siddiqui
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| | - Jordan S Mar
- Genentech, Inc., South San Francisco, California, USA
| | | | - David F Choy
- Genentech, Inc., South San Francisco, California, USA
| | - Peter Bradding
- Department of Respiratory Sciences, University of Leicester, Leicester Respiratory NIHR BRC, Glenfield Hospital, Leicester, UK
| |
Collapse
|
24
|
Zhang M, Xia L, Peng W, Xie G, Li F, Zhang C, Syeda MZ, Hu Y, Lan F, Yan F, Jin Z, Du X, Han Y, Lv B, Wang Y, Li M, Fei X, Zhao Y, Chen K, Chen Y, Li W, Chen Z, Zhou Q, Zhang M, Ying S, Shen H. CCL11/CCR3-dependent eosinophilia alleviates malignant pleural effusions and improves prognosis. NPJ Precis Oncol 2024; 8:138. [PMID: 38951159 PMCID: PMC11217290 DOI: 10.1038/s41698-024-00608-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 05/09/2024] [Indexed: 07/03/2024] Open
Abstract
Malignant pleural effusion (MPE) is a common occurrence in advanced cancer and is often linked with a poor prognosis. Eosinophils were reported to involve in the development of MPE. However, the role of eosinophils in MPE remains unclear. To investigate this, we conducted studies using both human samples and mouse models. Increased eosinophil counts were observed in patients with MPE, indicating that the higher the number of eosinophils is, the lower the LENT score is. In our animal models, eosinophils were found to migrate to pleural cavity actively upon exposure to tumor cells. Intriguingly, we discovered that a deficiency in eosinophils exacerbated MPE, possibly due to their anti-tumor effects generated by modifying the microenvironment of MPE. Furthermore, our experiments explored the role of the C-C motif chemokine ligand 11 (CCL11) and its receptor C-C motif chemokine receptor 3 (CCR3) in MPE pathology. As a conclusion, our study underscores the protective potential of eosinophils against the development of MPE, and that an increase in eosinophils through adoptive transfer of eosinophils or increasing their numbers improved MPE.
Collapse
Affiliation(s)
- Min Zhang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Lixia Xia
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Wenbei Peng
- Department of Respiratory and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guogang Xie
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Fei Li
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Chao Zhang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Madiha Zahra Syeda
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Yue Hu
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Fen Lan
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Fugui Yan
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Zhangchu Jin
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Xufei Du
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Yinling Han
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Baihui Lv
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Yuejue Wang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Miao Li
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Xia Fei
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Yun Zhao
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Kaijun Chen
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Yan Chen
- International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Wen Li
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Zhihua Chen
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Qiong Zhou
- Department of Respiratory and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Min Zhang
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
| | - Songmin Ying
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, 322000, China.
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Huahao Shen
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Respiratory Disease of Zhejiang Province, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China.
- State Key Lab for Respiratory Diseases, National Clinical Research Centre for Respiratory Disease, Guangzhou, 510120, Guangdong, China.
| |
Collapse
|
25
|
Rodrigo-Muñoz JM, Naharro-González S, Callejas S, Relaño-Ruperez C, Torroja C, Benguria A, Lorente-Sorolla C, Gil-Martínez M, García de Castro Z, Cañas JA, Valverde-Monge M, Bernaola J, Pinillos-Robles EJ, Betancor D, Fernández-Nieto M, Dopazo A, Sánchez-Cabo F, Sánchez-Pernaute O, Rodríguez-Nieto MJ, Sastre J, Del Pozo V. Single-cell RNA sequencing of human blood eosinophils reveals plasticity and absence of canonical cell subsets. Allergy 2024. [PMID: 38934897 DOI: 10.1111/all.16213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/04/2024] [Accepted: 06/16/2024] [Indexed: 06/28/2024]
Affiliation(s)
- José Manuel Rodrigo-Muñoz
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Sara Naharro-González
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Sergio Callejas
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Carlos Relaño-Ruperez
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Carlos Torroja
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Alberto Benguria
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Clara Lorente-Sorolla
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Marta Gil-Martínez
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Zahara García de Castro
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - José Antonio Cañas
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Marcela Valverde-Monge
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Allergy Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Jaime Bernaola
- Allergy Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | | | - Diana Betancor
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Allergy Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Mar Fernández-Nieto
- Allergy Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Ana Dopazo
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Olga Sánchez-Pernaute
- Rheumatology Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - María Jesús Rodríguez-Nieto
- Pulmonology Unit, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
- Hospital Universitario General de Villalba, Madrid, Spain
| | - Joaquín Sastre
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Allergy Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Victoria Del Pozo
- Immunoallergy Laboratory, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Universidad Autónoma de Madrid, Madrid, Spain
| |
Collapse
|
26
|
Noble SL, Vacca F, Hilligan KL, Mules TC, Le Gros G, Inns S. Helminth infection induces a distinct subset of CD101 hi lung tissue-infiltrating eosinophils that are differentially regulated by type 2 cytokines. Immunol Cell Biol 2024. [PMID: 38924182 DOI: 10.1111/imcb.12796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/04/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024]
Abstract
Eosinophils play divergent roles in health and disease, contributing to both immunoregulatory and proinflammatory responses. Helminth infection is strongly associated with eosinophilia and the induction of the type 2 cytokines interleukin (IL)-5, IL-4 and IL-13. This study aimed to elucidate the heterogeneity of pulmonary eosinophils in response to helminth infection and the roles of IL-5, IL-4 and IL-13 in driving pulmonary eosinophil responses. Using the murine helminth model Nippostrongylus brasiliensis (Nb), we characterize a subtype of eosinophils, defined by high expression of CD101, that is induced in the lungs of Nb-infected mice and are phenotypically distinct from lung eosinophils that express low levels of CD101. Strikingly, we show that the two eosinophil subtypes have distinct anatomical localization within the lung: CD101low eosinophils are predominantly localized in the lung vasculature, whereas Nb-induced CD101hi eosinophils are predominantly localized in the extravascular lung niche. We show that CD101hi eosinophils are also induced across other models of pulmonary infection and inflammation, including a nonlung-migrating helminth infection, house dust mite-induced allergic inflammation and influenza infection. Furthermore, we demonstrate that the induction of CD101hi tissue eosinophils is independent of IL-5 and IL-4 signaling, but is dependent on intact IL-13 signaling. These results suggest that IL-13 produced during helminth infection and other disease states promotes a pulmonary tissue-infiltrating program in eosinophils defined by high expression of CD101.
Collapse
Affiliation(s)
- Sophia-Louise Noble
- Malaghan Institute of Medical Research, Wellington, New Zealand
- Department of Medicine, University of Otago, Wellington, New Zealand
| | - Francesco Vacca
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | | | - Thomas C Mules
- Malaghan Institute of Medical Research, Wellington, New Zealand
- Department of Medicine, University of Otago, Wellington, New Zealand
- Te Whatu Ora, Capital Coast and Hutt Valley, Wellington, New Zealand
| | - Graham Le Gros
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Stephen Inns
- Department of Medicine, University of Otago, Wellington, New Zealand
- Te Whatu Ora, Capital Coast and Hutt Valley, Wellington, New Zealand
| |
Collapse
|
27
|
Raftery AL, O'Brien CA, Shad A, L'Estrange-Stranieri E, Hsu AT, Jacobsen EA, Harris NL, Tsantikos E, Hibbs ML. Activated eosinophils in early life impair lung development and promote long-term lung damage. Mucosal Immunol 2024:S1933-0219(24)00057-6. [PMID: 38901764 DOI: 10.1016/j.mucimm.2024.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 05/21/2024] [Accepted: 06/05/2024] [Indexed: 06/22/2024]
Abstract
Exaggeration of type 2 immune responses promotes lung inflammation and altered lung development; however, eosinophils, despite expansion in the postnatal lung, have not been specifically assessed in the context of neonatal lung disease. Furthermore, early life factors including prematurity and respiratory infection predispose infants to chronic obstructive pulmonary disease later in life. To assess eosinophils in the developing lung and how they may contribute to chronic lung disease, we generated mice harboring eosinophil-specific deletion of the negative regulatory enzyme SH2 domain-containing inositol 5' phosphatase-1. This increased the activity and number of pulmonary eosinophils in the developing lung, which was associated with impaired lung development, expansion of activated alveolar macrophages (AMφ), multinucleated giant cell formation, enlargement of airspaces, and fibrosis. Despite regression of eosinophils following completion of lung development, AMφ-dominated inflammation persisted, alongside lung damage. Bone marrow chimera studies showed that SH2 domain-containing inositol 5' phosphatase-1-deficient eosinophils were not sufficient to drive inflammatory lung disease in adult steady-state mice but once inflammation and damage were present, it could not be resolved. Depletion of eosinophils during alveolarization alleviated pulmonary inflammation and lung pathology, demonstrating an eosinophil-intrinsic effect. These results show that the presence of activated eosinophils during alveolarization aggravates AMφs and promotes sustained inflammation and long-lasting lung pathology.
Collapse
Affiliation(s)
- April L Raftery
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Caitlin A O'Brien
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Ali Shad
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Elan L'Estrange-Stranieri
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Amy T Hsu
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Elizabeth A Jacobsen
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, Arizona, USA
| | - Nicola L Harris
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Evelyn Tsantikos
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia
| | - Margaret L Hibbs
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia.
| |
Collapse
|
28
|
Reineking W, Hennig-Pauka I, Schröder L, Höner U, Schreiber E, Geiping L, Lassnig S, Bonilla MC, Hewicker-Trautwein M, de Buhr N. Spontaneous Lethal Outbreak of Influenza A Virus Infection in Vaccinated Sows on Two Farms Suggesting the Occurrence of Vaccine-Associated Enhanced Respiratory Disease with Eosinophilic Lung Pathology. Viruses 2024; 16:955. [PMID: 38932247 PMCID: PMC11209110 DOI: 10.3390/v16060955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/11/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Influenza A virus (IAV) infections in swine are usually subclinical, but they can reach high morbidity rates. The mortality rate is normally low. In this study, six vaccinated, spontaneously deceased sows revealed IAV infection and enhanced neutrophilic bronchopneumonia with unexpectedly large numbers of infiltrating eosinophils. The purpose of this study was to characterize these lung lesions with special emphasis on the phenotypes of inflammatory cells, the presence of eosinophilic peroxidase (EPO), and neutrophil extracellular traps (NETs). The number of Sirius red-stained eosinophils was significantly higher in the lungs of IAV-infected sows compared to healthy pigs, indicating a migration of eosinophils from blood vessels into the lung tissue stimulated by IAV infection. The detection of intra- and extracellular EPO in the lungs suggests its contribution to pulmonary damage. The presence of CD3+ T lymphocytes, CD20+ B lymphocytes, and Iba-1+ macrophages indicates the involvement of cell-mediated immune responses in disease progression. Furthermore, high numbers of myeloperoxidase-positive cells were detected. However, DNA-histone-1 complexes were reduced in IAV-infected sows, leading to the hypothesis that NETs are not formed in the IAV-infected sows. In conclusion, our findings in the lungs of IAV-infected vaccinated sows suggest the presence of so far unreported field cases of vaccine-associated enhanced respiratory disease.
Collapse
Affiliation(s)
- Wencke Reineking
- Department of Pathology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany (M.H.-T.)
| | - Isabel Hennig-Pauka
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, 49456 Bakum, Germany; (I.H.-P.); (E.S.)
| | | | - Ulf Höner
- Tierärztliche Praxis in Schöppingen, 48624 Schöppingen, Germany
| | - Elena Schreiber
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, 49456 Bakum, Germany; (I.H.-P.); (E.S.)
| | - Lukas Geiping
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, 49456 Bakum, Germany; (I.H.-P.); (E.S.)
| | - Simon Lassnig
- Institute of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (S.L.); (M.C.B.)
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Marta C. Bonilla
- Institute of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (S.L.); (M.C.B.)
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Marion Hewicker-Trautwein
- Department of Pathology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany (M.H.-T.)
| | - Nicole de Buhr
- Institute of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (S.L.); (M.C.B.)
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| |
Collapse
|
29
|
Taheri MM, Javan F, Poudineh M, Athari SS. CAR-NKT Cells in Asthma: Use of NKT as a Promising Cell for CAR Therapy. Clin Rev Allergy Immunol 2024; 66:328-362. [PMID: 38995478 DOI: 10.1007/s12016-024-08998-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2024] [Indexed: 07/13/2024]
Abstract
NKT cells, unique lymphocytes bridging innate and adaptive immunity, offer significant potential for managing inflammatory disorders like asthma. Activating iNKT induces increasing IFN-γ, TGF-β, IL-2, and IL-10 potentially suppressing allergic asthma. However, their immunomodulatory effects, including granzyme-perforin-mediated cytotoxicity, and expression of TIM-3 and TRAIL warrant careful consideration and targeted approaches. Although CAR-T cell therapy has achieved remarkable success in treating certain cancers, its limitations necessitate exploring alternative approaches. In this context, CAR-NKT cells emerge as a promising approach for overcoming these challenges, potentially achieving safer and more effective immunotherapies. Strategies involve targeting distinct IgE-receptors and their interactions with CAR-NKT cells, potentially disrupting allergen-mast cell/basophil interactions and preventing inflammatory cytokine release. Additionally, targeting immune checkpoints like PDL-2, inducible ICOS, FASL, CTLA-4, and CD137 or dectin-1 for fungal asthma could further modulate immune responses. Furthermore, artificial intelligence and machine learning hold immense promise for revolutionizing NKT cell-based asthma therapy. AI can optimize CAR-NKT cell functionalities, design personalized treatment strategies, and unlock a future of precise and effective care. This review discusses various approaches to enhancing CAR-NKT cell efficacy and longevity, along with the challenges and opportunities they present in the treatment of allergic asthma.
Collapse
Affiliation(s)
| | - Fatemeh Javan
- Student Research Committee, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mohadeseh Poudineh
- Student Research Committee, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Seyyed Shamsadin Athari
- Cancer Gene therapy Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
- Department of Immunology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
| |
Collapse
|
30
|
Munari S, Ciotti G, Cestaro W, Corsi L, Tonin S, Ballarin A, Floriani A, Dartora C, Bosi A, Tacconi M, Gialdini F, Gottardi M, Menzella F. Severe hypereosinophilia in a patient treated with dupilumab and shift to mepolizumab: the importance of multidisciplinary management. A case report and literature review. Drugs Context 2024; 13:2024-3-5. [PMID: 38817801 PMCID: PMC11139165 DOI: 10.7573/dic.2024-3-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 04/25/2024] [Indexed: 06/01/2024] Open
Abstract
Type 2 inflammation is a heterogeneous condition due to the complex activation of different immunological pathways. Rapid progress in research to evaluate the efficacy of biologics for chronic rhinosinusitis with nasal polyps and asthma has led to the availability of effective therapeutic options. These drugs are safe, but temporary iatrogenic hypereosinophilia may sometimes be associated with clinical symptoms or organ damage. Here, we describe a case of severe hypereosinophilia in a patient with chronic rhinosinusitis with nasal polyps and asthma treated with dupilumab and a subsequent therapeutic shift to mepolizumab that led to maintenance of symptom control and concomitant normalization of blood eosinophil count.
Collapse
Affiliation(s)
- Sara Munari
- Otolaryngology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
- Pulmonology and Otolaryngology Multidisciplinary Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Giulia Ciotti
- Onco Hematology, Department of Oncology, Veneto Institute of Oncology IOV – IRCCS, Padua, Italy
| | - Walter Cestaro
- Otolaryngology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
- Pulmonology and Otolaryngology Multidisciplinary Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Lorenzo Corsi
- Pulmonology and Otolaryngology Multidisciplinary Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Silvia Tonin
- Pulmonology and Otolaryngology Multidisciplinary Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Andrea Ballarin
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Ariel Floriani
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Cristina Dartora
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Annamaria Bosi
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Matteo Tacconi
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Francesco Gialdini
- Otolaryngology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| | - Michele Gottardi
- Onco Hematology, Department of Oncology, Veneto Institute of Oncology IOV – IRCCS, Padua, Italy
| | - Francesco Menzella
- Pulmonology and Otolaryngology Multidisciplinary Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
- Pulmonology Unit, S. Valentino Hospital, Montebelluna (TV), AULSS2 Marca Trevigiana, Italy
| |
Collapse
|
31
|
Dunn JLM, Szep A, Gonzalez Galan E, Zhang S, Marlman J, Caldwell J, Troutman TD, Rothenberg ME. Eosinophil Specialization Is Regulated by Exposure to the Esophageal Epithelial Microenvironment. J Leukoc Biol 2024:qiae102. [PMID: 38723185 DOI: 10.1093/jleuko/qiae102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/18/2024] [Accepted: 04/01/2024] [Indexed: 08/31/2024] Open
Abstract
Distinct subsets of eosinophils are reported in inflammatory and healthy tissues, yet the functions of uniquely specialized eosinophils and the signals that elicit them, particularly in eosinophilic esophagitis (EoE), are not well understood. Herein, we report an ex-vivo system wherein freshly isolated human eosinophils were cocultured with esophageal epithelial cells and disease-relevant pro-inflammatory (IL-13) or pro-fibrotic (TGF-β) cytokines. Compared with untreated cocultures, IL-13 increased expression of CD69 on eosinophils, whereas TGF-β increased expression of CD81, CD62L, and CD25. Eosinophils from IL-13-treated cocultures demonstrated increased secretion of GRO-α, IL-8, and M-CSF and also generated increased extracellular peroxidase activity following activation. Eosinophils from TGF-β-treated cocultures secreted increased IL-6 and exhibited increased chemotactic response to CCL11 compared with eosinophils from untreated or IL-13-treated coculture conditions. When eosinophils from TGF-β-treated cocultures were cultured with fibroblasts, they upregulated SERPINE1 expression and fibronectin secretion by fibroblasts compared with eosinophils that were cultured with GM-CSF, alone. Translational studies revealed that CD62L was heterogeneously expressed by eosinophils in patient biopsies. Our results demonstrate that disease-relevant pro-inflammatory and pro-fibrotic signals present in the esophagus of EoE patients cause distinct profiles of eosinophil activation and gene expression.
Collapse
Affiliation(s)
- Julia L M Dunn
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| | - Andrea Szep
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| | | | - Simin Zhang
- Department of Rheumatology, Allergy and Immunology, University of Cincinnati, Cincinnati, Ohio 45229
| | - Justin Marlman
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| | - Julie Caldwell
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| | - Ty D Troutman
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| | - Marc E Rothenberg
- Division of Allergy & Immunology, Cincinnati Children's Hospital Medical Center
| |
Collapse
|
32
|
Png LH, Kalish L, Campbell RG, Seresirikachorn K, Albrecht T, Raji N, Choy C, Rimmer J, Earls P, Sacks R, Harvey RJ. Predictors of persistent disease in biologic treated type 2 diffuse/eosinophilic chronic rhinosinusitis undergoing surgery. Int Forum Allergy Rhinol 2024; 14:909-918. [PMID: 37805956 DOI: 10.1002/alr.23282] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/09/2023] [Accepted: 09/23/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND Biologic therapy targeting type 2 chronic rhinosinusitis with nasal polyps (CRSwNP) has greatly improved disease control but nonresponders exist in a proportion of patients in phase 3 trials and clinical practice. This study explores the serum and histologic changes in biologic treated CRSwNP that predict disease control. METHODS A cross-sectional study was performed of patients with CRSwNP on biologics for their asthma, who underwent endoscopic sinus surgery while on biologic therapy. At the 6-month postoperative assessment, patients with poorly controlled CRSwNP while on biologic therapy were compared to patients who were controlled. Blood and mucosal samples taken at the time of surgery 6 months prior were assessed to predict disease control. RESULTS A total of 37 patients were included (age 47.8 ± 12.4 years, 43.2% female). Those with poorly controlled disease had reduced tissue eosinophils (% >100 cells/high-powered field: 8.3% vs. 50.0%, p < 0.001) and increased serum neutrophils (5.2 ± 2.7 vs. 3.7 ± 1.1 × 109 cells/L, p = 0.02). Logistic regression analysis demonstrated that reduced tissue eosinophil was predictive for poorly controlled disease (OR = 0.21, 95% CI [0.05, 0.83], p = 0.03). Receiver-operating characteristic analysis showed that need for rescue systemic corticosteroid was predicted at a serum neutrophil cut-off level of 5.75 × 109 cells/L (sensitivity = 80.0%, specificity = 96.9%, AUC = 0.938, p = 0.002). CONCLUSION Low tissue eosinophils and increased serum neutrophils while on biologics predict for poor response in the biological treatment of with CRSwNP. A serum neutrophil level of ≥5.75 × 109 cells/L predicts for poor response to current biologic therapy.
Collapse
Affiliation(s)
- Lu Hui Png
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Department of Otorhinolaryngology - Head and Neck Surgery, Singapore General Hospital, Singapore, Singapore
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | - Larry Kalish
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Department of Otolaryngology, Head and Neck Surgery, Concord General Hospital, University of Sydney, Sydney, Australia
- Faculty of Medicine, University of Sydney, Sydney, Australia
| | - Raewyn G Campbell
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
- Department of Otolaryngology, Head and Neck Surgery, Royal Prince Alfred Hospital, Sydney, Australia
| | - Kachorn Seresirikachorn
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
- Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Endoscopic Nasal and Sinus Surgery Excellence Center, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Doctor of Philosophy Program in Medical Sciences (International Program), Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Tobias Albrecht
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Nelufer Raji
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
| | - Christine Choy
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
| | - Janet Rimmer
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Woolcock Institute, University of Sydney, Sydney, Australia
- Faculty of Medicine, Notre Dame University, Sydney, Australia
| | - Peter Earls
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Department of Anatomical Pathology, St Vincent's Hospital, Darlinghurst, Australia
| | - Raymond Sacks
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
- Department of Otolaryngology, Head and Neck Surgery, Concord General Hospital, University of Sydney, Sydney, Australia
| | - Richard J Harvey
- Rhinology and Skull Base Research Group, St Vincent's Centre for Applied Medical Research, University of New South Wales, Sydney, Australia
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| |
Collapse
|
33
|
Candia C, Ambrosino P, D'Anna SE, Motta A, Maniscalco M. Exploring novel perspectives on eosinophilic inflammation in severe asthma. Biomark Med 2024; 18:357-361. [PMID: 38623926 DOI: 10.2217/bmm-2023-0801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/11/2024] [Indexed: 04/17/2024] Open
Abstract
Two recent articles by the same research group documented that patients with severe eosinophilic asthma exhibit an increased proportion of a subtype of eosinophils, namely CD62Llow inflammatory eosinophils (iEos) and identified an intriguing correlation between such iEos and asthma control scores. Moreover, CD62Llow iEos were reduced after treatment with the anti-IL-5 monoclonal antibody mepolizumab. In the future, we believe that eosinophil subtypes could represent a useful biomarker in severe eosinophilic asthma, helping clinicians characterize patient endotypes and monitoring the response to biological drugs.
Collapse
Affiliation(s)
- Claudio Candia
- Department of Clinical Medicine & Surgery, Federico II University, Naples, 80131, Italy
| | - Pasquale Ambrosino
- Istituti Clinici Scientifici Maugeri IRCCS, Pulmonary Rehabilitation Unit of Telese Terme Institute, 82037, Italy
| | - Silvestro E D'Anna
- Istituti Clinici Scientifici Maugeri IRCCS, Pulmonary Rehabilitation Unit of Telese Terme Institute, 82037, Italy
| | - Andrea Motta
- Institute of Biomolecular Chemistry, National Research Council, Pozzuoli, 80078, Italy
| | - Mauro Maniscalco
- Department of Clinical Medicine & Surgery, Federico II University, Naples, 80131, Italy
- Istituti Clinici Scientifici Maugeri IRCCS, Pulmonary Rehabilitation Unit of Telese Terme Institute, 82037, Italy
| |
Collapse
|
34
|
Narita T, Murakami Y, Ishii T, Muroi M, Yamashita N. Glucocorticoid-induced TNF receptor family-related protein functions as a costimulatory molecule for murine eosinophils. J Leukoc Biol 2024; 115:771-779. [PMID: 38159043 DOI: 10.1093/jleuko/qiad166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 12/04/2023] [Accepted: 12/17/2023] [Indexed: 01/03/2024] Open
Abstract
Eosinophils are typical effector cells associated with type 2 immune responses and play key roles in the pathogenesis of allergic diseases. These cells are activated by various stimuli, such as cytokines, chemokines, and growth factors, but the regulatory mechanisms of eosinophil effector functions remain unclear. Glucocorticoid-induced tumor necrosis factor receptor family-related protein (GITR), a transmembrane protein belonging to the tumor necrosis factor (TNF) receptor superfamily, is a well-known regulatory molecule for T cell activation. Here, we show that GITR is also constitutively expressed on eosinophils and functions as a costimulatory molecule for these cells. Although degranulation was unaffected by GITR engagement of murine bone marrow-derived eosinophils, secretion of inflammatory cytokines such as interleukin (IL)-4, IL-6, and IL-13 from IL-33-activated bone marrow-derived eosinophils was augmented by anti-mouse GITR agonistic antibody (DTA-1). In conclusion, our results provide a new regulatory pathway of cytokine secretion from eosinophils in which GITR functions as a costimulatory molecule.
Collapse
Affiliation(s)
- Tomoya Narita
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Yusuke Murakami
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Takashi Ishii
- Research Institute of Pharmaceutical Sciences, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Masashi Muroi
- Research Institute of Pharmaceutical Sciences, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Naomi Yamashita
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Shinmachi 1-1-20, Nishitokyo-shi, Tokyo 202-8585, Japan
| |
Collapse
|
35
|
Day KS, Rempel L, Rossi FMV, Theret M. Origins and functions of eosinophils in two non-mucosal tissues. Front Immunol 2024; 15:1368142. [PMID: 38585275 PMCID: PMC10995313 DOI: 10.3389/fimmu.2024.1368142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/26/2024] [Indexed: 04/09/2024] Open
Abstract
Eosinophils are a type of granulocyte named after the presence of their eosin-stained granules. Traditionally, eosinophils have been best known to play prominent roles in anti-parasitic responses and mediating allergic reactions. Knowledge of their behaviour has expanded with time, and they are now recognized to play integral parts in the homeostasis of gastrointestinal, respiratory, skeletal muscle, adipose, and connective tissue systems. As such, they are implicated in a myriad of pathologies, and have been the target of several medical therapies. This review focuses on the lifespan of eosinophils, from their origins in the bone marrow, to their tissue-resident role. In particular, we wish to highlight the functions of eosinophils in non-mucosal tissues with skeletal muscle and the adipose tissues as examples, and to discuss the current understanding of their participation in diseased states in these tissues.
Collapse
Affiliation(s)
- Katie S. Day
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Lucas Rempel
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Fabio M. V. Rossi
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Marine Theret
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
36
|
Karkout R, Gaudreault V, Labrie L, Aldossary H, Azalde Garcia N, Shan J, Fixman ED. Female-specific enhancement of eosinophil recruitment and activation in a type 2 innate inflammation model in the lung. Clin Exp Immunol 2024; 216:13-24. [PMID: 37607041 PMCID: PMC10929703 DOI: 10.1093/cei/uxad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/19/2023] [Accepted: 08/21/2023] [Indexed: 08/24/2023] Open
Abstract
A sex disparity in asthma prevalence and severity exists in humans. Multiple studies have highlighted the role of innate cells in shaping the adaptive immune system in chronic asthma. To explore the sex bias in the eosinophilic response, we delivered IL-33 to the lungs of mice and delineated the kinetics by which the inflammatory response was induced. Our data demonstrate that females recruited more eosinophils capable of responding to IL-33. Eosinophil activation occurred selectively in the lung tissue and was enhanced in females at all time points. This increase was associated with increased ex vivo type 2 cytokine and chemokine production and female-specific expansion of group 2 innate lymphoid cells lacking expression of the killer-cell lectin-like receptor G1. Our findings suggest that the enhanced eosinophilic response in females is due, firstly, to a greater proportion of eosinophils recruited to the lungs in females that can respond to IL-33; and secondly, to an enhanced production of type 2 cytokines in females. Our data provide insight into the mechanisms that guide the female-specific enhancement of eosinophil activation in the mouse and form the basis to characterize these responses in human asthmatics.
Collapse
Affiliation(s)
- Rami Karkout
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Véronique Gaudreault
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Lydia Labrie
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Haya Aldossary
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Noelia Azalde Garcia
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Jichuan Shan
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| | - Elizabeth D Fixman
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada
| |
Collapse
|
37
|
Koranteng J, Chung KF, Michaeloudes C, Bhavsar P. The role of mitochondria in eosinophil function: implications for severe asthma pathogenesis. Front Cell Dev Biol 2024; 12:1360079. [PMID: 38495619 PMCID: PMC10940389 DOI: 10.3389/fcell.2024.1360079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/13/2024] [Indexed: 03/19/2024] Open
Abstract
Mitochondria are key metabolic hubs involved in cellular energy production and biosynthesis. ATP is generated primarily by glucose and fatty acid oxidation through the tricarboxylic acid (TCA) cycle and oxidative phosphorylation (OXPHOS) in the mitochondria. During OXPHOS there is also production of reactive oxygen species (ROS), which are involved in the regulation of cellular function. Mitochondria are also central in the regulating cell survival and death, particularly in the intrinsic apoptosis pathway. Severe asthma is a heterogeneous disease driven by various immune mechanisms. Severe eosinophilic asthma entails a type 2 inflammatory response and peripheral and lung eosinophilia, associated with severe airflow obstruction, frequent exacerbations and poor response to treatment. Mitochondrial dysfunction and altered metabolism have been observed in airway epithelial and smooth muscle cells from patients with asthma. However, the role of mitochondria in the development of eosinophilia and eosinophil-mediated inflammation in severe asthma is unknown. In this review, we discuss the currently limited literature on the role of mitochondria in eosinophil function and how it is regulated by asthma-relevant cytokines, including interleukin (IL)-5 and granulocyte-macrophage colony-stimulating factor (GM-CSF), as well as by corticosteroid drugs. Moreover, we summarise the evidence on the role of mitochondria in the regulation of eosinophils apoptosis and eosinophil extracellular trap formation. Finally, we discuss the possible role of altered mitochondrial function in eosinophil dysfunction in severe asthma and suggest possible research avenues in order to better understand their role in disease pathogenesis, and identify novel therapeutic targets.
Collapse
Affiliation(s)
- Janice Koranteng
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | | | - Pankaj Bhavsar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton & Harefield NHS Trust, London, United Kingdom
| |
Collapse
|
38
|
Calzetta L, Page C, Matera MG, Cazzola M, Rogliani P. Use of human airway smooth muscle in vitro and ex vivo to investigate drugs for the treatment of chronic obstructive respiratory disorders. Br J Pharmacol 2024; 181:610-639. [PMID: 37859567 DOI: 10.1111/bph.16272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023] Open
Abstract
Isolated airway smooth muscle has been extensively investigated since 1840 to understand the pharmacology of airway diseases. There has often been poor predictability from murine experiments to drugs evaluated in patients with asthma or chronic obstructive pulmonary disease (COPD). However, the use of isolated human airways represents a sensible strategy to optimise the development of innovative molecules for the treatment of respiratory diseases. This review aims to provide updated evidence on the current uses of isolated human airways in validated in vitro methods to investigate drugs in development for the treatment of chronic obstructive respiratory disorders. This review also provides historical notes on the pioneering pharmacological research on isolated human airway tissues, the key differences between human and animal airways, as well as the pivotal differences between human medium bronchi and small airways. Experiments carried out with isolated human bronchial tissues in vitro and ex vivo replicate many of the main anatomical, pathophysiological, mechanical and immunological characteristics of patients with asthma or COPD. In vitro models of asthma and COPD using isolated human airways can provide information that is directly translatable into humans with obstructive lung diseases. Regardless of the technique used to investigate drugs for the treatment of chronic obstructive respiratory disorders (i.e., isolated organ bath systems, videomicroscopy and wire myography), the most limiting factors to produce high-quality and repeatable data remain closely tied to the manual skills of the researcher conducting experiments and the availability of suitable tissue.
Collapse
Affiliation(s)
- Luigino Calzetta
- Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University of Parma, Parma, Italy
| | - Clive Page
- Pulmonary Pharmacology Unit, Institute of Pharmaceutical Science, King's College London, London, UK
| | - Maria Gabriella Matera
- Unit of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Mario Cazzola
- Unit of Respiratory Medicine, Department of Experimental Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Paola Rogliani
- Unit of Respiratory Medicine, Department of Experimental Medicine, University of Rome "Tor Vergata", Rome, Italy
| |
Collapse
|
39
|
Lenz B, Ehrens A, Ajendra J, Risch F, Gal J, Neumann AL, Reichwald JJ, Strutz W, McSorley HJ, Martin C, Hoerauf A, Hübner MP. Repeated sensitization of mice with microfilariae of Litomosoides sigmodontis induces pulmonary eosinophilia in an IL-33-dependent manner. PLoS Pathog 2024; 20:e1012071. [PMID: 38457461 PMCID: PMC10954174 DOI: 10.1371/journal.ppat.1012071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 03/20/2024] [Accepted: 02/24/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND Eosinophilia is a hallmark of helminth infections and eosinophils are essential in the protective immune responses against helminths. Nevertheless, the distinct role of eosinophils during parasitic filarial infection, allergy and autoimmune disease-driven pathology is still not sufficiently understood. In this study, we established a mouse model for microfilariae-induced eosinophilic lung disease (ELD), a manifestation caused by eosinophil hyper-responsiveness within the lung. METHODS Wild-type (WT) BALB/c mice were sensitized with dead microfilariae (MF) of the rodent filarial nematode Litomosoides sigmodontis three times at weekly intervals and subsequently challenged with viable MF to induce ELD. The resulting immune response was compared to non-sensitized WT mice as well as sensitized eosinophil-deficient dblGATA mice using flow cytometry, lung histology and ELISA. Additionally, the impact of IL-33 signaling on ELD development was investigated using the IL-33 antagonist HpARI2. RESULTS ELD-induced WT mice displayed an increased type 2 immune response in the lung with increased frequencies of eosinophils, alternatively activated macrophages and group 2 innate lymphoid cells, as well as higher peripheral blood IgE, IL-5 and IL-33 levels in comparison to mice challenged only with viable MF or PBS. ELD mice had an increased MF retention in lung tissue, which was in line with an enhanced MF clearance from peripheral blood. Using eosinophil-deficient dblGATA mice, we demonstrate that eosinophils are essentially involved in driving the type 2 immune response and retention of MF in the lung of ELD mice. Furthermore, we demonstrate that IL-33 drives eosinophil activation in vitro and inhibition of IL-33 signaling during ELD induction reduces pulmonary type 2 immune responses, eosinophil activation and alleviates lung lacunarity. In conclusion, we demonstrate that IL-33 signaling is essentially involved in MF-induced ELD development. SUMMARY Our study demonstrates that repeated sensitization of BALB/c mice with L. sigmodontis MF induces pulmonary eosinophilia in an IL-33-dependent manner. The newly established model recapitulates the characteristic features known to occur during eosinophilic lung diseases (ELD) such as human tropical pulmonary eosinophilia (TPE), which includes the retention of microfilariae in the lung tissue and induction of pulmonary eosinophilia and type 2 immune responses. Our study provides compelling evidence that IL-33 drives eosinophil activation during ELD and that blocking IL-33 signaling using HpARI2 reduces eosinophil activation, eosinophil accumulation in the lung tissue, suppresses type 2 immune responses and mitigates the development of structural damage to the lung. Consequently, IL-33 is a potential therapeutic target to reduce eosinophil-mediated pulmonary pathology.
Collapse
Affiliation(s)
- Benjamin Lenz
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Alexandra Ehrens
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), partner site Bonn-Cologne, Bonn, Germany
| | - Jesuthas Ajendra
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Frederic Risch
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Joséphine Gal
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Equipe Parasites et Protistes Libres, Muséum National d’Histoire Naturelle, CNRS; CP52, Paris, France
| | - Anna-Lena Neumann
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Julia J. Reichwald
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Wiebke Strutz
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Henry J. McSorley
- Division of Cell Signaling and Immunology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Coralie Martin
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Equipe Parasites et Protistes Libres, Muséum National d’Histoire Naturelle, CNRS; CP52, Paris, France
| | - Achim Hoerauf
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), partner site Bonn-Cologne, Bonn, Germany
| | - Marc P. Hübner
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), partner site Bonn-Cologne, Bonn, Germany
| |
Collapse
|
40
|
Zhou J, Liu J, Wang B, Li N, Liu J, Han Y, Cao X. Eosinophils promote CD8 + T cell memory generation to potentiate anti-bacterial immunity. Signal Transduct Target Ther 2024; 9:43. [PMID: 38413575 PMCID: PMC10899176 DOI: 10.1038/s41392-024-01752-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/03/2024] [Accepted: 01/22/2024] [Indexed: 02/29/2024] Open
Abstract
Memory CD8+ T cell generation is crucial for pathogen elimination and effective vaccination against infection. The cellular and molecular circuitry that underlies the generation of memory CD8+ T cells remains elusive. Eosinophils can modulate inflammatory allergic responses and interact with lymphocytes to regulate their functions in immune defense. Here we report that eosinophils are required for the generation of memory CD8+ T cells by inhibiting CD8+ T cell apoptosis. Eosinophil-deficient mice display significantly impaired memory CD8+ T cell response and weakened resistance against Listeria monocytogenes (L.m.) infection. Mechanistically, eosinophils secrete interleukin-4 (IL-4) to inhibit JNK/Caspase-3 dependent apoptosis of CD8+ T cells upon L.m. infection in vitro. Furthermore, active eosinophils are recruited into the spleen and secrete more IL-4 to suppress CD8+ T cell apoptosis during early stage of L.m. infection in vivo. Adoptive transfer of wild-type (WT) eosinophils but not IL-4-deficient eosinophils into eosinophil-deficient mice could rescue the impaired CD8+ T cell memory responses. Together, our findings suggest that eosinophil-derived IL-4 promotes the generation of CD8+ T cell memory and enhances immune defense against L.m. infection. Our study reveals a new adjuvant role of eosinophils in memory T cell generation and provides clues for enhancing the vaccine potency via targeting eosinophils and related cytokines.
Collapse
Affiliation(s)
- Jun Zhou
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, 310058, China
- National Key Laboratory of Immunity and Inflammation, Institute of Immunology, Naval Medical University, Shanghai, 200433, China
| | - Jiaqi Liu
- Department of Immunology, Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005, China
| | - Bingjing Wang
- Department of Immunology, Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005, China
| | - Nan Li
- National Key Laboratory of Immunity and Inflammation, Institute of Immunology, Naval Medical University, Shanghai, 200433, China
| | - Juan Liu
- National Key Laboratory of Immunity and Inflammation, Institute of Immunology, Naval Medical University, Shanghai, 200433, China
| | - Yanmei Han
- National Key Laboratory of Immunity and Inflammation, Institute of Immunology, Naval Medical University, Shanghai, 200433, China.
| | - Xuetao Cao
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
- National Key Laboratory of Immunity and Inflammation, Institute of Immunology, Naval Medical University, Shanghai, 200433, China.
- Department of Immunology, Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005, China.
- Institute of Immunology, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| |
Collapse
|
41
|
Guth C, Schumacher PP, Vijayakumar A, Borgmann H, Balles H, Koschel M, Risch F, Lenz B, Hoerauf A, Hübner MP, Ajendra J. Eosinophils Are an Endogenous Source of Interleukin-4 during Filarial Infections and Contribute to the Development of an Optimal T Helper 2 Response. J Innate Immun 2024; 16:159-172. [PMID: 38354709 PMCID: PMC10932553 DOI: 10.1159/000536357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024] Open
Abstract
INTRODUCTION Interleukin-4 (IL-4) is a central regulator of type 2 immunity, crucial for the defense against multicellular parasites like helminths. This study focuses on its roles and cellular sources during Litomosoides sigmodontis infection, a model for human filarial infections. METHODS Utilizing an IL-4 secretion assay, investigation into the sources of IL-4 during the progression of L. sigmodontis infection was conducted. The impact of eosinophils on the Th2 response was investigated through experiments involving dblGATA mice, which lack eosinophils and, consequently, eosinophil-derived IL-4. RESULTS The absence of eosinophils notably influenced Th2 polarization, leading to impaired production of type 2 cytokines. Interestingly, despite this eosinophil deficiency, macrophage polarization, proliferation, and antibody production remained unaffected. CONCLUSION Our research uncovers eosinophils as a major source of IL-4, especially during the early phase of filarial infection. Consequently, these findings shed new light on IL-4 dynamics and eosinophil effector functions in filarial infections.
Collapse
Affiliation(s)
- Cécile Guth
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Pia Philippa Schumacher
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Archena Vijayakumar
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Hannah Borgmann
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Helene Balles
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Marianne Koschel
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Frederic Risch
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Benjamin Lenz
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| | - Achim Hoerauf
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
| | - Marc P. Hübner
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
| | - Jesuthas Ajendra
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
| |
Collapse
|
42
|
Park J, Kang SJ. The ontogenesis and heterogeneity of basophils. DISCOVERY IMMUNOLOGY 2024; 3:kyae003. [PMID: 38567293 PMCID: PMC10941320 DOI: 10.1093/discim/kyae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/02/2024] [Accepted: 01/31/2024] [Indexed: 04/04/2024]
Abstract
Basophils are the rarest leukocytes, but they have essential roles in protection against helminths, allergic disorders, autoimmune diseases, and some cancers. For years, the clinical significance of basophils has been neglected because of the lack of proper experimental tools to study them. The development of basophil-specific antibodies and animal models, along with genomic advances like single-cell transcriptomics, has greatly enhanced our understanding of basophil biology. Recent discoveries regarding basophils prompted us to write this review, emphasizing the basophil developmental pathway. In it, we chronologically examine the steps of basophil development in various species, which reveals the apparent advent of basophils predating IgE and basophil's IgE-independent regulatory role in primitive vertebrates. Then, we cover studies of basophil development in adult bone marrow, and compare those of murine and human basophils, introducing newly identified basophil progenitors and mature basophil subsets, as well as the transcription factors that regulate the transitions between them. Last, we discuss the heterogeneity of tissue-resident basophils, which may develop through extramedullary hematopoiesis. We expect that this review will contribute to a deeper understanding of basophil biology from the intricate aspects of basophil development and differentiation, offering valuable insights for both researchers and clinicians.
Collapse
Affiliation(s)
- Jiyeon Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon34141, Republic of Korea
| | - Suk-Jo Kang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon34141, Republic of Korea
| |
Collapse
|
43
|
Tian K, Dangarh P, Zhang H, Hines CL, Bush A, Pybus HJ, Harker JA, Lloyd CM, Tanaka RJ, Saglani S. Role of epithelial barrier function in inducing type 2 immunity following early-life viral infection. Clin Exp Allergy 2024; 54:109-119. [PMID: 38011856 DOI: 10.1111/cea.14425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 10/26/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Preschool wheeze attacks triggered by recurrent viral infections, including respiratory syncytial virus (RSV), are associated with an increased risk of childhood asthma. However, mechanisms that lead to asthma following early-life viral wheezing remain uncertain. METHODS To investigate a causal relationship between early-life RSV infections and onset of type 2 immunity, we developed a neonatal murine model of recurrent RSV infection, in vivo and in silico, and evaluated the dynamical changes of altered airway barrier function and downstream immune responses, including eosinophilia, mucus secretion and type 2 immunity. RESULTS RSV infection of neonatal BALB/c mice at 5 and 15 days of age induced robust airway eosinophilia, increased pulmonary CD4+ IL-13+ and CD4+ IL-5+ cells, elevated levels of IL-13 and IL-5 and increased airway mucus at 20 days of age. Increased bronchoalveolar lavage albumin levels, suggesting epithelial barrier damage, were present and persisted following the second RSV infection. Computational in silico simulations demonstrated that recurrent RSV infection resulted in severe damage of the airway barrier (epithelium), triggering the onset of type 2 immunity. The in silico results also demonstrated that recurrent infection is not always necessary for the development of type 2 immunity, which could also be triggered with single infection of high viral load or when the epithelial barrier repair is compromised. CONCLUSIONS The neonatal murine model demonstrated that recurrent RSV infection in early life alters airway barrier function and promotes type 2 immunity. A causal relationship between airway barrier function and type 2 immunity was suggested using in silico model simulations.
Collapse
Affiliation(s)
- Kunyuan Tian
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Prakrati Dangarh
- Department of Bioengineering, Imperial College London, London, UK
| | - Haina Zhang
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Andrew Bush
- National Heart and Lung Institute, Imperial College London, London, UK
- Department of Respiratory Paediatrics, Royal Brompton Hospital, London, UK
| | - Hannah J Pybus
- Department of Bioengineering, Imperial College London, London, UK
| | - James A Harker
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Clare M Lloyd
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Reiko J Tanaka
- Department of Bioengineering, Imperial College London, London, UK
| | - Sejal Saglani
- National Heart and Lung Institute, Imperial College London, London, UK
- Department of Respiratory Paediatrics, Royal Brompton Hospital, London, UK
| |
Collapse
|
44
|
Bhattacharyya S, Oon C, Diaz L, Sandborg H, Stempinski ES, Saoi M, Morgan TK, López CS, Cross JR, Sherman MH. Autotaxin-lysolipid signaling suppresses a CCL11-eosinophil axis to promote pancreatic cancer progression. NATURE CANCER 2024; 5:283-298. [PMID: 38195933 PMCID: PMC10899115 DOI: 10.1038/s43018-023-00703-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/06/2023] [Indexed: 01/11/2024]
Abstract
Lipids and their modifying enzymes regulate diverse features of the tumor microenvironment and cancer progression. The secreted enzyme autotaxin (ATX) hydrolyzes extracellular lysophosphatidylcholine to generate the multifunctional lipid mediator lysophosphatidic acid (LPA) and supports the growth of several tumor types, including pancreatic ductal adenocarcinoma (PDAC). Here we show that ATX suppresses the accumulation of eosinophils in the PDAC microenvironment. Genetic or pharmacologic ATX inhibition increased the number of intratumor eosinophils, which promote tumor cell apoptosis locally and suppress tumor progression. Mechanistically, ATX suppresses eosinophil accumulation via an autocrine feedback loop, wherein ATX-LPA signaling negatively regulates the activity of the AP-1 transcription factor c-Jun, in turn suppressing the expression of the potent eosinophil chemoattractant CCL11 (eotaxin-1). Eosinophils were identified in human PDAC specimens, and rare individuals with high intratumor eosinophil abundance had the longest overall survival. Together with recent findings, this study reveals the context-dependent, immune-modulatory potential of ATX-LPA signaling in cancer.
Collapse
Affiliation(s)
- Sohinee Bhattacharyya
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
- Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Chet Oon
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
- Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Luis Diaz
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - Holly Sandborg
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
- Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Erin S Stempinski
- Multiscale Microscopy Core Facility, Oregon Health & Science University, Portland, OR, USA
| | - Michelle Saoi
- Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Terry K Morgan
- Department of Pathology, Oregon Health & Science University, Portland, OR, USA
| | - Claudia S López
- Multiscale Microscopy Core Facility, Oregon Health & Science University, Portland, OR, USA
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
| | - Justin R Cross
- Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mara H Sherman
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland, OR, USA.
- Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| |
Collapse
|
45
|
Kariyawasam HH, James LK. Chronic rhinosinusitis with nasal polyps: eosinophils versus B lymphocytes in disease pathogenesis. Curr Opin Allergy Clin Immunol 2024; 24:15-24. [PMID: 38018818 DOI: 10.1097/aci.0000000000000959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
PURPOSE OF REVIEW To highlight the current evidence that supports the view that eosinophils may not drive disease in chronic rhinosinusitis with nasal polyps (CRSwNP) and the emerging evidence for B cells as an important player in this disease. RECENT FINDINGS Eosinophil depletion studies in CRSwNP do not fully support a critical role for eosinophils in CRSwNP. Almost complete eosinophil depletion with dexpramipexole had no impact on polyp size reduction or clinical improvement. Anti-interleukin (IL)-5 and IL-5Rα inhibition were more effective though with less clinical impact when compared to anti-immunoglobulin E (IgE) or IL-4Rα inhibition strategies. As IL-5Rα is also expressed on CRSwNP derived IgE+ and IgG4+ plasma cells to the same extent as eosinophils, improvements in CRSwNP with IL-5 inhibition may suggest a role for B cells over eosinophils in CRSwNP. We review both eosinophils and B cells in the context of CRSwNP and highlight the current evidence that supports an emerging role for B cells. SUMMARY Despite many aspects of immunopathology in CRSwNP explainable by B cell dysfunction, B cells have so far been ignored in CRSwNP. Further work is needed, as targeting B cells may offer an exciting new therapeutic option in the future.
Collapse
Affiliation(s)
- Harsha H Kariyawasam
- Specialist Allergy and Clinical Immunology, Royal National ENT and Eastman Hospital, London
- Department of Rhinology, Royal National ENT and Eastman Hospital, London, University College London Hospitals NHS Foundation Trust
| | - Louisa K James
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| |
Collapse
|
46
|
Grisaru-Tal S, Munitz A. ATX restricts anti-tumor eosinophil responses. NATURE CANCER 2024; 5:221-223. [PMID: 38418775 DOI: 10.1038/s43018-023-00718-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Affiliation(s)
- Sharon Grisaru-Tal
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel
| | - Ariel Munitz
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel.
| |
Collapse
|
47
|
Sabbe M, Schleich F, Janssens P, Louis R. When sequential use of mepolizumab and dupilumab in a severe atopic eosinophilic asthmatic questions the role of eosinophils in mediating the clinical expression of the disease: a case report. J Med Case Rep 2024; 18:63. [PMID: 38291489 PMCID: PMC10829233 DOI: 10.1186/s13256-023-04255-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 11/06/2023] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND The advent of biologics has resulted in major progress in the treatment of severe T2 high asthmatics. There are currently several classes of biologics approved for severe asthma including anti-immunoglobulin E, anti-interleukin-5/interleukin 5R, anti-interleukin 4/interleukin 13R, and anti-thymic stromal lymphopoietin. CASE PRESENTATIONS Here we report the case of a 55-year-old Caucasian man with severe eosinophilic atopic asthma, who sequentially benefited from a treatment with mepolizumab, an anti-interleukin-5 monoclonal antibody, followed by treatment with dupilumab, an anti-interleukin-4/interleukin-13R antibody, the switch being justified by a flare-up of dermatitis while on mepolizumab. Overall, the patient has been followed for 72 months, including 42 months on mepolizumab and 30 months on dupilumab. Close monitoring of exacerbations, asthma control, lung function, asthma quality of life, and biomarkers shows that both biologics reduced asthma exacerbation and provided an improvement in asthma control and quality of life, with the patient achieving remission after 30 months on dupilumab. However, the effects of the two biologics on the biomarkers were very different, with mepolizumab controlling eosinophilic inflammation and dupilumab reducing serum immunoglobulin E and fractional exhaled nitric oxide levels. CONCLUSION The originality of this case resides in the description of clinical status and biomarker evolution after a sequential use of mepolizumab and dupilumab in a severe atopic eosinophilic asthmatic. It shows that mepolizumab reduces exacerbation and improves asthma control by curbing eosinophilic inflammation whereas dupilumab provides asthma remission without controlling airway eosinophilic inflammation.
Collapse
Affiliation(s)
- M Sabbe
- Department of Respiratory Medicine, CHU Liege, Liège, Belgium.
| | - F Schleich
- Department of Respiratory Medicine, CHU Liege, Liège, Belgium
| | - P Janssens
- Dermatology, Medicard, Libramont, Belgium
| | - R Louis
- Department of Respiratory Medicine, CHU Liege, Liège, Belgium
| |
Collapse
|
48
|
I Kutyavin V, Korn LL, Medzhitov R. Nutrient-derived signals regulate eosinophil adaptation to the small intestine. Proc Natl Acad Sci U S A 2024; 121:e2316446121. [PMID: 38271336 PMCID: PMC10835075 DOI: 10.1073/pnas.2316446121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/05/2023] [Indexed: 01/27/2024] Open
Abstract
Eosinophils are well recognized as effector cells of type 2 immunity, yet they also accumulate in many tissues under homeostatic conditions. However, the processes that govern homeostatic eosinophil accumulation and tissue-specific adaptation, and their functional significance, remain poorly defined. Here, we investigated how eosinophils adapt to the small intestine (SI) microenvironment and the local signals that regulate this process. We observed that eosinophils gradually migrate along the crypt-villus axis, giving rise to a villus-resident subpopulation with a distinct transcriptional signature. Retinoic acid signaling was specifically required for maintenance of this subpopulation, while IL-5 was largely dispensable outside of its canonical role in eosinophil production. Surprisingly, we found that a high-protein diet suppressed the accumulation of villus-resident eosinophils. Purified amino acids were sufficient for this effect, which was a consequence of accelerated eosinophil turnover within the tissue microenvironment and was not due to altered development in the bone marrow. Our study provides insight into the process of eosinophil adaptation to the SI, highlighting its reliance on nutrient-derived signals.
Collapse
Affiliation(s)
- Vassily I Kutyavin
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Lisa L Korn
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
- Department of Medicine (Rheumatology), Yale University School of Medicine, New Haven, CT 06510
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
- HHMI, Yale University School of Medicine, New Haven, CT 06510
| |
Collapse
|
49
|
Yang M, Lv Y, Tang S, Xu D, Li D, Liao Z, Li X, Chen L. Blood Eosinophil Count and Its Determinants in a Chinese Population-Based Cohort. Respiration 2024; 103:70-78. [PMID: 38253034 PMCID: PMC10871690 DOI: 10.1159/000535989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
INTRODUCTION Blood eosinophil count has been shown markedly variable across different populations. However, its distribution in Chinese general population remains unclear. We aimed to investigate blood eosinophil count and its determinants in a Chinese general population. METHODS In this population-based study, general citizens of Sichuan province in China were extracted from the China Pulmonary Health study. Data on demographics, personal and family history, living condition, lifestyle, spirometry, and complete blood count test were obtained and analyzed. A stepwise multivariate binary logistic regression analysis was performed to identify determinants of high blood eosinophils (>75th percentile). RESULTS A total of 3,310 participants were included, with a mean age (standard deviation) of 47.0 (15.6) years. In total population, the median blood eosinophil count was 110.0 (interquartile range [IQR]: 67.2-192.9) cells/μL, lower than that in smokers (133.4 cells/μL, IQR: 79.3-228.4) and patients with asthma (140.7 cells/μL, IQR: 79.6-218.2) or post-bronchodilator airflow limitation (141.5 cells/μL, IQR: 82.6-230.1), with a right-skewed distribution. Multivariate analyses revealed that oldness (aged ≥60 years) (odds ratio [OR]: 1.66, 95% confidence interval [CI]: 1.11-2.48), smoking ≥20 pack-years (OR: 1.90, 95% CI: 1.20-3.00), raising a dog/cat (OR: 1.72, 95% CI: 1.17-2.52), and occupational exposure to dust, allergen, and harmful gas (OR: 1.58, 95% CI: 1.15-2.15) were significantly associated with high blood eosinophils. CONCLUSION This study identifies a median blood eosinophil count of 110.0 cells/μL and determinants of high blood eosinophils in a Chinese general population, including oldness (aged ≥60 years), smoking ≥20 pack-years, raising a dog/cat, and occupational exposure to dust, allergen, and harmful gas.
Collapse
Affiliation(s)
- Mei Yang
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yao Lv
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
- Department of General Practice, Mianyang Central Hospital, University of Electronic Science and Technology of China, Mianyang, China
| | - Shijie Tang
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Xu
- Lab of Pulmonary Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Diandian Li
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Zenglin Liao
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoou Li
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Chen
- Department of Pulmonary and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
50
|
Kageyama T, Ito T, Tanaka S, Nakajima H. Physiological and immunological barriers in the lung. Semin Immunopathol 2024; 45:533-547. [PMID: 38451292 PMCID: PMC11136722 DOI: 10.1007/s00281-024-01003-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 02/10/2024] [Indexed: 03/08/2024]
Abstract
The lungs serve as the primary organ for respiration, facilitating the vital exchange of gases with the bloodstream. Given their perpetual exposure to external particulates and pathogens, they possess intricate protective barriers. Cellular adhesion in the lungs is robustly maintained through tight junctions, adherens junctions, and desmosomes. Furthermore, the pulmonary system features a mucociliary clearance mechanism that synthesizes mucus and transports it to the outside. This mucus is enriched with chemical barriers like antimicrobial proteins and immunoglobulin A (IgA). Additionally, a complex immunological network comprising epithelial cells, neural cells, and immune cells plays a pivotal role in pulmonary defense. A comprehensive understanding of these protective systems offers valuable insights into potential pathologies and their therapeutic interventions.
Collapse
Affiliation(s)
- Takahiro Kageyama
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba, 260-8670, Japan.
- Institute for Advanced Academic Research, Chiba University, Chiba, Japan.
| | - Takashi Ito
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba, 260-8670, Japan
- Chiba University Synergy Institute for Futuristic Mucosal Vaccine Research and Development (cSIMVa), Chiba, Japan
| | - Shigeru Tanaka
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba, 260-8670, Japan
| | - Hiroshi Nakajima
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba, 260-8670, Japan
- Chiba University Synergy Institute for Futuristic Mucosal Vaccine Research and Development (cSIMVa), Chiba, Japan
| |
Collapse
|