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Zhu Y, Jiang Q, Lei C, Yu Q, Qiu L. The response of CD27 +CD38 + plasmablasts, CD24 hiCD38 hi transitional B cells, CXCR5 -ICOS +PD-1 + Tph, Tph2 and Tfh2 subtypes to allergens in children with allergic asthma. BMC Pediatr 2024; 24:154. [PMID: 38424520 PMCID: PMC10902953 DOI: 10.1186/s12887-024-04622-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 02/06/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Allergic asthma is a type I allergic reaction mediated by serum Immunoglobulin E (IgE). B cell-mediated humoral immune response to allergens in the pathophysiology of allergic asthma have not been thoroughly elucidated. Peripheral helper T cells (Tph) and follicular helper T cells (Tfh) promote B cell differentiation and antibody production in inflamed tissues. OBJECTIVE To investigate the roles of B cell subsets, Tph cell subsets and Tfh cell subsets in allergic immune responses. METHODS Circulating B cell subsets, Tph cell subsets and Tfh cell subsets in 33 children with allergic asthma and 17 healthy children were analyzed using multicolor flow cytometry. The level of serum total IgE was also assessed. RESULTS Our study found that CD27+CD38+ plasmablasts and CD24hiCD38hi transitional B cells increased and were correlated with serum total IgE level, CD27- naive B cells and CD24hiCD27+ B cells decreased in children with allergic asthma. CXCR5- Tph, CXCR5-ICOS+ Tph, CXCR5-ICOS+PD-1+ Tph, CXCR5+ICOS+ Tfh and CXCR5+ICOS+PD-1+ Tfh increased in children with allergic asthma. Further analysis showed increased Tph2, Tph17, Tfh2 and Tfh17 subtypes while decreased Tph1 and Tfh1 subtypes in children with allergic asthma. Most interestingly, Tph2 or Tfh2 subtypes had a positive correlation with serum total IgE level. CONCLUSION Overall, these results provide insight into the allergens elicited B, Tph or Tfh cell response and identify heretofore unappreciated CD24hiCD38hi transitional B cells, CD24hiCD27+ B cells, CXCR5- Tph, CXCR5-ICOS+PD-1+ Tph, Tph2 subtypes and Tfh2 subtypes response to allergens.
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Affiliation(s)
- Yunying Zhu
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital(Affiliated People's Hospital),Hangzhou Medical College, Hangzhou, 310014, China
- Schoolcollege of Medical Technology of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China
| | - Qian Jiang
- Department of Clinical Laboratory, Ningbo Puji Hospital (Ningbo Second Hospital West Hospital), Ningbo, 315099, Zhejiang, China
| | - Chenshuang Lei
- Department of Clinical Laboratory, Wenzhou Central Hospital, Wenzhou, 325099, China
| | - Qinhua Yu
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital(Affiliated People's Hospital),Hangzhou Medical College, Hangzhou, 310014, China
| | - Liannv Qiu
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital(Affiliated People's Hospital),Hangzhou Medical College, Hangzhou, 310014, China.
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Immormino RM, Smeekens JM, Mathai PI, Clough KM, Nguyen JT, Ghio AJ, Cook DN, Kulis MD, Moran TP. Different airborne particulates trigger distinct immune pathways leading to peanut allergy in a mouse model. Allergy 2024; 79:432-444. [PMID: 37804001 PMCID: PMC11017991 DOI: 10.1111/all.15908] [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: 04/10/2023] [Revised: 08/21/2023] [Accepted: 09/13/2023] [Indexed: 10/08/2023]
Abstract
BACKGROUND Environmental exposure to peanut through non-oral routes is a risk factor for peanut allergy. Early-life exposure to air pollutants, including particulate matter (PM), is associated with sensitization to foods through unknown mechanisms. We investigated whether PM promotes sensitization to environmental peanut and the development of peanut allergy in a mouse model. METHODS C57BL/6J mice were co-exposed to peanut and either urban particulate matter (UPM) or diesel exhaust particles (DEP) via the airways and assessed for peanut sensitization and development of anaphylaxis following peanut challenge. Peanut-specific CD4+ T helper (Th) cell responses were characterized by flow cytometry and Th cytokine production. Mice lacking select innate immune signaling genes were used to study mechanisms of PM-induced peanut allergy. RESULTS Airway co-exposure to peanut and either UPM- or DEP-induced systemic sensitization to peanut and anaphylaxis following peanut challenge. Exposure to UPM or DEP triggered activation and migration of lung dendritic cells to draining lymph nodes and induction of peanut-specific CD4+ Th cells. UPM- and DEP-induced distinct Th responses, but both stimulated expansion of T follicular helper (Tfh) cells essential for peanut allergy development. MyD88 signaling was critical for UPM- and DEP-induced peanut allergy, whereas TLR4 signaling was dispensable. DEP-induced peanut allergy and Tfh-cell differentiation depended on IL-1 but not IL-33 signaling, whereas neither cytokine alone was necessary for UPM-mediated sensitization. CONCLUSION Environmental co-exposure to peanut and PM induces peanut-specific Tfh cells and peanut allergy in mice.
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Affiliation(s)
- Robert M. Immormino
- Department of Pediatrics, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- Center for Environmental Medicine, Asthma, and Lung Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Johanna M. Smeekens
- Department of Pediatrics, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- UNC Food Allergy Initiative, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Priscilla I. Mathai
- Department of Pediatrics, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- Center for Environmental Medicine, Asthma, and Lung Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Katelyn M. Clough
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | | | - Andrew J. Ghio
- Human Studies Facility, United States Environmental Protection Agency, Chapel Hill, North Carolina, USA
| | - Donald N. Cook
- Division of Intramural Research, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, North Carolina, USA
| | - Michael D. Kulis
- Department of Pediatrics, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- UNC Food Allergy Initiative, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Timothy P. Moran
- Department of Pediatrics, The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- Center for Environmental Medicine, Asthma, and Lung Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Haque TT, Weissler KA, Schmiechen Z, Laky K, Schwartz DM, Li J, Locci M, Turfkruyer M, Yao C, Schaughency P, Leak L, Lack J, Kanno Y, O'Shea J, Frischmeyer-Guerrerio PA. TGFβ prevents IgE-mediated allergic disease by restraining T follicular helper 2 differentiation. Sci Immunol 2024; 9:eadg8691. [PMID: 38241399 DOI: 10.1126/sciimmunol.adg8691] [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: 01/26/2023] [Accepted: 11/15/2023] [Indexed: 01/21/2024]
Abstract
Allergic diseases are common, affecting more than 20% of the population. Genetic variants in the TGFβ pathway are strongly associated with atopy. To interrogate the mechanisms underlying this association, we examined patients and mice with Loeys-Dietz syndrome (LDS) who harbor missense mutations in the kinase domain of TGFΒR1/2. We demonstrate that LDS mutations lead to reduced TGFβ signaling and elevated total and allergen-specific IgE, despite the presence of wild-type T regulatory cells in a chimera model. Germinal center activity was enhanced in LDS and characterized by a selective increase in type 2 follicular helper T cells (TFH2). Expression of Pik3cg was increased in LDS TFH cells and associated with reduced levels of the transcriptional repressor SnoN. PI3Kγ/mTOR signaling in LDS naïve CD4+ T cells was elevated after T cell receptor cross-linking, and pharmacologic inhibition of PI3Kγ or mTOR prevented exaggerated TFH2 and antigen-specific IgE responses after oral antigen exposure in an adoptive transfer model. Naïve CD4+ T cells from nonsyndromic allergic individuals also displayed decreased TGFβ signaling, suggesting that our mechanistic discoveries may be broadly relevant to allergic patients in general. Thus, TGFβ plays a conserved, T cell-intrinsic, and nonredundant role in restraining TFH2 development via the PI3Kγ/mTOR pathway and thereby protects against allergic disease.
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Affiliation(s)
- Tamara T Haque
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Katherine A Weissler
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Zoe Schmiechen
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Karen Laky
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Daniella M Schwartz
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jenny Li
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Michela Locci
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Mathilde Turfkruyer
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Chen Yao
- Laboratory of Lymphocyte Nuclear Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Paul Schaughency
- Collaborative Bioinformatics Resource, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lashawna Leak
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Justin Lack
- Collaborative Bioinformatics Resource, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Yuka Kanno
- Laboratory of Lymphocyte Nuclear Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - John O'Shea
- Laboratory of Lymphocyte Nuclear Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Pamela A Frischmeyer-Guerrerio
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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Kaplan BL, Lawrence BP. Invited Perspective: Environmental Chemical-Sensing AHR Remains an Enigmatic Key Player in Toxicology. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:31307. [PMID: 36975774 PMCID: PMC10044337 DOI: 10.1289/ehp12535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/03/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Barbara L.F. Kaplan
- Center for Environmental Health Sciences, Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, USA
| | - B. Paige Lawrence
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
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5
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An in vitro alveolar model allows for the rapid assessment of chemical respiratory sensitization with modifiable biomarker endpoints. Chem Biol Interact 2022; 368:110232. [DOI: 10.1016/j.cbi.2022.110232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/07/2022] [Accepted: 10/21/2022] [Indexed: 11/23/2022]
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Grydziuszko E, Phelps A, Bruton K, Jordana M, Koenig JFE. Heterogeneity, subsets, and plasticity of T follicular helper cells in allergy. J Allergy Clin Immunol 2022; 150:990-998. [PMID: 36070826 DOI: 10.1016/j.jaci.2022.08.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/31/2022] [Accepted: 08/16/2022] [Indexed: 10/14/2022]
Abstract
Antibody responses are critical for protection against pathogens. However, diseases such as allergic rhinitis or food allergy result from aberrant production of IgE antibodies against otherwise innocuous environmental antigens. The production of allergen-specific IgE requires interaction between B cells and CD4+ T cells, and a granular understanding of these interactions is required to develop novel therapies for allergic disease. CD4+ T cells are exceptionally heterogeneous in their transcriptional, epigenetic, and proteomic profiles, which poses significant challenges when attempting to define subsets relevant to the study of allergy among a continuum of cells. Defining subsets such as the T follicular helper (TFH) cell cluster provides a shorthand to understand the functions of CD4+ T cells in antibody production and supports mechanistic experimentation for hypothesis-driven discovery. With a focus on allergic disease, this Rostrum article broadly discusses heterogeneity among CD4+ T cells and provides a rationale for subdividing TFH cells into both functional and cytokine-skewed subsets. Further, it highlights the plasticity demonstrated by TFH cells during the primary response and after recall, and it explores the possibility of harnessing this plasticity to reprogram immunity for therapeutic benefit in allergic disease.
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Affiliation(s)
- Emily Grydziuszko
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Allyssa Phelps
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Kelly Bruton
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Manel Jordana
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Joshua F E Koenig
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada.
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7
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Chen Q, Xie M, Liu H, Dent AL. Development of allergen-specific IgE in a food-allergy model requires precisely timed B cell stimulation and is inhibited by Fgl2. Cell Rep 2022; 39:110990. [PMID: 35767958 PMCID: PMC9271337 DOI: 10.1016/j.celrep.2022.110990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 04/12/2022] [Accepted: 06/01/2022] [Indexed: 11/30/2022] Open
Abstract
Immunoglobulin E (IgE) responses are a central feature of allergic disease. Using a well-established food-allergy model in mice, we show that two sensitizations with cognate B cell antigen (Ag) and adjuvant 7 days apart promotes optimal development of IgE+ germinal center (GC) B cells and high-affinity IgE production. Intervals of 3 or 14 days between Ag sensitizations lead to loss of IgE+ GC B cells and an undetectable IgE response. The immunosuppressive factors Fgl2 and CD39 are down-regulated in T follicular helper (TFH) cells under optimal IgE-sensitization conditions. Deletion of Fgl2 in TFH and T follicular regulatory (TFR) cells, but not from TFR cells alone, increase Ag-specific IgE levels and IgE-mediated anaphylactic responses. Overall, we find that Ag-specific IgE responses require precisely timed stimulation of IgE+ GC B cells by Ag. Furthermore, we show that Fgl2 is expressed by TFH cells and represses IgE. This work has implications for the development and treatment of food allergies. Using a mouse food-allergy model, Chen et al. find that allergen-specific IgE responses require precisely timed stimulation of IgE+ germinal center B cells. The authors further show that Fgl2 expressed by T follicular helper cells represses IgE. This work has implications for the development and treatment of food allergy.
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Affiliation(s)
- Qiang Chen
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Markus Xie
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Hong Liu
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Alexander L Dent
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA.
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8
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Teng ZX, Zhou XC, Xu RT, Zhu FY, Bing X, Guo N, Shi L, Qi WW, Liu CC, Xia M. Tfh Exosomes Derived from Allergic Rhinitis Promote DC Maturation Through miR-142-5p/CDK5/STAT3 Pathway. J Inflamm Res 2022; 15:3187-3205. [PMID: 35668915 PMCID: PMC9166915 DOI: 10.2147/jir.s365217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 05/24/2022] [Indexed: 01/08/2023] Open
Affiliation(s)
- Zhen-Xiao Teng
- Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Xuan-Chen Zhou
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Run-Tong Xu
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Fang-Yuan Zhu
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Xin Bing
- Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Na Guo
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Lei Shi
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Wen-Wen Qi
- Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
| | - Cheng-Cheng Liu
- Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
- Cheng-Cheng Liu, Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250000, People’s Republic of China, Tel +86-68776913, Email
| | - Ming Xia
- Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
- Correspondence: Ming Xia, Department of Otolaryngology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People’s Republic of China, 250012, Tel +86-68779106, Email
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9
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Gowthaman U, Sikder S, Lee D, Fisher C. T follicular helper cells in IgE-mediated pathologies. Curr Opin Immunol 2022; 74:133-139. [DOI: 10.1016/j.coi.2021.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/12/2021] [Accepted: 12/03/2021] [Indexed: 12/23/2022]
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10
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Allen CDC. Features of B Cell Responses Relevant to Allergic Disease. THE JOURNAL OF IMMUNOLOGY 2022; 208:257-266. [PMID: 35017215 PMCID: PMC10054180 DOI: 10.4049/jimmunol.2100988] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 11/04/2021] [Indexed: 01/16/2023]
Abstract
This Brief Review delves into B cell responses in the context of allergy. The primary contribution of B cells to allergy is the production of IgE, the Ab isotype that triggers immediate hypersensitivity reactions through the release of mediators from mast cells and basophils. B cells may also have protective roles in allergy, such as through the production of IgG or as regulatory B cells. In this review, I focus on the basic principles of B cell differentiation and discuss features relevant to allergic immune responses. In particular, I discuss: (1) class-switch recombination; (2) plasma cell differentiation; (3) germinal centers and affinity maturation; and (4) memory B cells and recall responses, with an emphasis on IgE, IgG1, and IgG4. I also consider how B cells may contribute to allergic responses independent of Ab production-for example, by serving as APCs.
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Affiliation(s)
- Christopher D C Allen
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA; Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA; and Department of Anatomy, University of California, San Francisco, San Francisco, CA
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11
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Zhang X, Hu X, Tian T, Pang W. The role of ICOS in allergic disease: Positive or Negative? Int Immunopharmacol 2021; 103:108394. [PMID: 34922247 DOI: 10.1016/j.intimp.2021.108394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/15/2021] [Accepted: 11/19/2021] [Indexed: 01/09/2023]
Abstract
With the rapid increase in the incidence of allergic diseases, the mechanisms underlying the development of these diseases have received a great deal of attention, and this is particularly true in regard to the role of ICOS in allergic diseases. Current studies have revealed that ICOS affects the functional activity of multiple immune cells that modulate the adaptive immune system. Additionally, ICOS also plays a crucial role in mediating cellular immunity and coordinating the response of the entire immune system, and thus, it plays a role in allergic reactions. However, the ICOS/ICOS-ligand (ICOS-L) axis functions in a dual role during the development of multiple allergic diseases. In this review, we explore the role of ICOS/ICOSL in the context of different immune cells that function in allergic diseases, and we summarize recent advances in their contribution to these diseases.
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Affiliation(s)
- Xueyan Zhang
- Department of Otorhinolaryngology-Head and Neck Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xianyang Hu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, China
| | - Tengfei Tian
- Department of Otolaryngology-Head and Neck Surgery, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Wenhui Pang
- Department of Otorhinolaryngology-Head and Neck Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.
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12
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Jeong J, Lee HK. The Role of CD4 + T Cells and Microbiota in the Pathogenesis of Asthma. Int J Mol Sci 2021; 22:11822. [PMID: 34769255 PMCID: PMC8584410 DOI: 10.3390/ijms222111822] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/26/2021] [Accepted: 10/29/2021] [Indexed: 12/22/2022] Open
Abstract
Asthma, a chronic respiratory disease involving variable airflow limitations, exhibits two phenotypes: eosinophilic and neutrophilic. The asthma phenotype must be considered because the prognosis and drug responsiveness of eosinophilic and neutrophilic asthma differ. CD4+ T cells are the main determinant of asthma phenotype. Th2, Th9 and Tfh cells mediate the development of eosinophilic asthma, whereas Th1 and Th17 cells mediate the development of neutrophilic asthma. Elucidating the biological roles of CD4+ T cells is thus essential for developing effective asthma treatments and predicting a patient's prognosis. Commensal bacteria also play a key role in the pathogenesis of asthma. Beneficial bacteria within the host act to suppress asthma, whereas harmful bacteria exacerbate asthma. Recent literature indicates that imbalances between beneficial and harmful bacteria affect the differentiation of CD4+ T cells, leading to the development of asthma. Correcting bacterial imbalances using probiotics reportedly improves asthma symptoms. In this review, we investigate the effects of crosstalk between the microbiota and CD4+ T cells on the development of asthma.
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Affiliation(s)
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea;
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13
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Li C, Du X, Huang Q, Yang Y, Wang J, Qin X, Wang W, Liu Z, Yuan H, Liu J, Lv Z, Li Y, Chen Y, Cui Y, Corrigan CJ, Huang K, Wang W, Ying S. Repeated exposure to inactivated Streptococcus pneumoniae induces asthma-like pathological changes in mice in the presence of IL-33. Cell Immunol 2021; 369:104438. [PMID: 34530343 DOI: 10.1016/j.cellimm.2021.104438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/19/2021] [Accepted: 08/17/2021] [Indexed: 11/27/2022]
Abstract
While environmental aeroallergens and epithelial alarmins such as IL-33 are firmly implicated in asthma, the possible role of Streptococcus pneumoniae (S. pneumoniae) antigens is less clear. To explore this, wild-type BALB/c mice were repeatedly challenged per-nasally with IL-33 and inactivated S. pneumoniae, either agent alone or diluent control. Some animals were rested then later re-challenged with inactivated S. pneumoniae alone. Serum concentrations of S. pneumoniae lysates-specific IgE were measured in patients with asthma and control subjects. Interestingly, in the presence of IL-33, repeated exposure to inactivated S. pneumoniae induced asthma-like pathological changes accompanied by a systemic adaptive immune response. Subsequent re-exposure of the sensitized animals to inactivated S. pneumoniae alone was able to induce such changes. The concentration of S. pneumoniae lysates-specific IgE was significantly elevated in the asthma patients. These data suggest that antigens derived from infectious microorganisms may participate in generating the mucosal inflammation which characterizes asthma.
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Affiliation(s)
- Chenduo Li
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China; College of Integrated Chinese and Western Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaonan Du
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Qiong Huang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yiran Yang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jingjing Wang
- Department of Laboratory Animal Sciences, Capital Medical University, Beijing, China
| | - Xiaofeng Qin
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Wenjun Wang
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China
| | - Zihan Liu
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Huihui Yuan
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jie Liu
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Zhe Lv
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yan Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery, Ministry of Education, Beijing Key Laboratory of Nasal Diseases, Beijing, China
| | - Yan Chen
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Ye Cui
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chris J Corrigan
- Division of Asthma, Allergy & Lung Biology, MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, King's College London, London, UK
| | - Kewu Huang
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Sun Ying
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.
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14
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Bergantini L, d'Alessandro M, Cameli P, Pianigiani T, Fanetti M, Sestini P, Bargagli E. Follicular T Helper and Breg Cell Balance in Severe Allergic Asthma Before and After Omalizumab Therapy. Mol Diagn Ther 2021; 25:593-605. [PMID: 34342843 PMCID: PMC8410727 DOI: 10.1007/s40291-021-00545-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2021] [Indexed: 01/20/2023]
Abstract
BACKGROUND Severe allergic asthma (SAA) is based on type 2 (T2-high) immune responses to allergens promoting type 2 T helper (Th2) cell cytokine responses and production of IgE antibodies. Omalizumab was the first biological drug licensed for clinical use in the management of IgE-mediated SAA. Despite emerging evidence supporting the prominent role of follicular T cells (Tfh), Breg and Treg subsets, in the development and progression of SAA, no data are available on the impact of omalizumab therapy. METHODS Ten SAA patients monitored at the Respiratory Diseases Unit of Siena University Hospital and ten healthy sex- and age-matched controls were enrolled in the study. Clinical and functional parameters were collected at baseline (T0) and after 6 months of therapy (T6). Cellular population analysis was determined through multicolour flow cytometry. RESULTS SAA patients showed higher percentages of Th17.1, Tfh and Tfh2 while CD24hiCD27hi Breg cell, Treg and Tfr percentages were significantly lower than in controls. Higher percentages of Tfh2 in patients with nasal polyps than in those without and in controls were observed. At T6, significant decreases in Tfh and Tfh2 compared with T0 were observed. A slightly significant increase in Teffs was reported at T6 compared to T0. ΔIgE levels in serum were correlated with ΔCD19+CD24+CD27+ Breg cell percentages (r = - 0.86, p = 0.0022). CONCLUSIONS Our data explored the changes in Tfh cells, Tregs and Bregs in severe asthma. The restoration of immunological imbalance in SAA patients after omalizumab is certainly intriguing and represents a glimpse into the comprehension of immunological effects of treatment.
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Affiliation(s)
- Laura Bergantini
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy.
| | - Miriana d'Alessandro
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
| | - Paolo Cameli
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
| | - Tommaso Pianigiani
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
| | - Matteo Fanetti
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
| | - Piersante Sestini
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
| | - Elena Bargagli
- Department of Medical Sciences, Surgery and Neuroscience, Respiratory Disease and Lung Transplant Unit, University of Siena, 53100, Siena, Italy
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15
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Zhao Y, Peng W, Abbas M, Shi M, Tang Y, Wang L, Yan H. Anaphylactic shock in a small cell lung cancer patient receiving atezolizumab therapy: a rare but potentially fatal complication. Invest New Drugs 2021; 40:209-214. [PMID: 34398354 DOI: 10.1007/s10637-021-01163-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 08/03/2021] [Indexed: 12/15/2022]
Abstract
Immunotherapy has been a revolutionary innovation in cancer therapy in recent years, but it is accompanied by various unique immune-related adverse events (irAEs). Among these irAEs, anaphylactic shock is very rare. Here, we report a case of a patient who developed anaphylactic shock after receiving one dose of atezolizumab. A 74-year-old male patient with small cell lung cancer experienced recurrence 10 years after surgery. After one cycle of treatment, the patient developed a grade 2 rash and recovered after receiving oral methylprednisolone tablets. In the second cycle, atezolizumab was discontinued. Then, the patient was scheduled to receive atezolizumab plus carboplatin and etoposide again after three weeks, but approximately three minutes after an intravenous infusion of atezolizumab, the patient developed signs and symptoms of anaphylactic shock, such as dyspnea, cold limbs, and loss of consciousness. At this point, the infusion was immediately stopped, and a normal saline infusion was administered. Meanwhile, ECG monitoring, supplemental humidified high-flow supplemental 100% oxygen, epinephrine, dopamine, hormone treatment with methylprednisolone, and other anti-shock treatments were carried out. For better recuperation, this patient was transferred to the intensive care unit for further treatment and was discharged two days later. Anaphylactic shock develops rapidly and is also a very severe complication. Prompt detection, diagnosis, and therapeutic intervention are the basics for survival.
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Affiliation(s)
- Yizhuo Zhao
- Department of Medical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, PR China.,Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, PR China
| | - Wei Peng
- Department of Medical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, PR China
| | - Muhammad Abbas
- Department of Medical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, PR China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, PR China
| | - Meiqi Shi
- Department of Medical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, PR China.
| | - Yiqun Tang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, PR China
| | - Li Wang
- Department of Medical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, PR China
| | - Huiying Yan
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, PR China
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16
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Amison RT, Page CP. Novel pharmacological therapies for the treatment of bronchial asthma. Minerva Med 2021; 113:31-50. [PMID: 34236157 DOI: 10.23736/s0026-4806.21.07559-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Asthma has long been recognised as a chronic inflammatory disease of the airways, often in response to inhaled allergens prompting inappropriate activation of the immune response. involving a range of cells including mast cells, Th2 lymphocytes and eosinophils and a wide range of inflammatory mediators. First-line therapy for treatment of persistent asthma involves the use of inhaled corticosteroids (ICS) in combination with inhaled β2-agonists enabling both the control of the underlying airways inflammation and a reduction of airway hyperresponsiveness. However, many patients remain symptomatic despite high-dose therapy. There is therefore a continued unmet clinical need to develop specifically new anti-inflammatory therapies for patients with asthma, either as an add-on therapy to ICS or as replacement monotherapies. The success of fixed dose combination inhalers containing both a bronchodilator and an anti-inflammatory drug has also led to the development of "bifunctional" drugs which are molecules specifically designed to have two distinct pharmacological actions based on distinct pharmacophores. In this review we will discuss these different pharmacological approaches under development for the treatment of bronchial asthma and the available pre-clinical and clinical data.
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Affiliation(s)
- Richard T Amison
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London, UK -
| | - Clive P Page
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
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17
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Eisenbarth SC, Baumjohann D, Craft J, Fazilleau N, Ma CS, Tangye SG, Vinuesa CG, Linterman MA. CD4 + T cells that help B cells - a proposal for uniform nomenclature. Trends Immunol 2021; 42:658-669. [PMID: 34244056 DOI: 10.1016/j.it.2021.06.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/26/2021] [Accepted: 06/11/2021] [Indexed: 12/20/2022]
Abstract
T follicular helper (Tfh) cells cognately guide differentiation of antigen-primed B cells in secondary lymphoid tissues. 'Tfh-like' populations not expressing the canonical Tfh cell transcription factor BCL6 have also been described, which can aid particular aspects of B cell differentiation. Tfh and Tfh-like cells are essential for protective and pathological humoral immunity. These CD4+ T cells that help B cells are polarized to produce diverse combinations of cytokines and chemokine receptors and can be grouped into distinct subsets that promote antibodies of different isotype, affinity, and duration, according to the nature of immune challenge. However, unified nomenclature to describe the distinct functional Tfh and Tfh-like cells does not exist. While explicitly acknowledging cellular plasticity, we propose categorizing these cell states into three groups based on phenotype and function, paired with their anatomical site of action.
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Affiliation(s)
- Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 0652, USA; Department of Immunobiology, Yale University School of Medicine, New Haven, CT 0652, USA; Department of Medicine, Yale University School of Medicine, New Haven, CT 0652, USA.
| | - Dirk Baumjohann
- Medical Clinic III for Oncology, Hematology, Immuno-Oncology, and Rheumatology, University Hospital Bonn, University of Bonn, 53127 Bonn, Germany
| | - Joe Craft
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 0652, USA; Department of Medicine, Yale University School of Medicine, New Haven, CT 0652, USA
| | - Nicolas Fazilleau
- Infinity, Toulouse Institute for Infectious and Inflammatory Diseases, University of Toulouse, CNRS, Inserm, 31024 Toulouse, France
| | - Cindy S Ma
- Garvan Institute of Medical Research, Sydney, NSW, Australia; St Vincent's Clinical School, Faculty of Medicine and Health, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Stuart G Tangye
- Garvan Institute of Medical Research, Sydney, NSW, Australia; St Vincent's Clinical School, Faculty of Medicine and Health, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Carola G Vinuesa
- John Curtin School for Medical Research, Australian National University, Acton 2601, ACT, Australia
| | - Michelle A Linterman
- Lymphocyte Signalling and Development, Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK
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18
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Crucial role of stimulator of interferon genes-dependent signaling in house dust mite extract-induced IgE production. Sci Rep 2021; 11:13157. [PMID: 34162937 PMCID: PMC8222396 DOI: 10.1038/s41598-021-92561-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/04/2021] [Indexed: 01/04/2023] Open
Abstract
Stimulator of interferon genes (STING) is a DNA sensor that responds to pathogens and induces type I interferon production. Herein, the role of STING in house dust mite extract (HDM)-induced allergic asthma was investigated. C57BL/6 wild-type (WT) and Sting−/− mice were intratracheally sensitized with HDM, and the bronchoalveolar lavage fluid (BALF), sera, lungs, and mediastinal lymph nodes (MLNs) were analyzed. The total and HDM-specific serum IgE levels were lower in Sting−/− mice than in WT mice. B cell and IgE-positive B cell proportion in BALF and MLNs, respectively, was significantly lower in Sting−/− mice than in WT mice. Additionally, cyclic GMP-AMP, a STING ligand, augmented total and HDM-specific serum IgE levels and B cell proportion in BALF when applied in combination with HDM. To elucidate the role of STING in IgE production, follicular helper T (Tfh) cells, which are involved in B cell maturation, were investigated. Tfh cell proportion in MLNs decreased in Sting−/− mice, and IL-4 and IL-13 production by HDM-restimulated MLN cells from HDM-sensitized mice was decreased in Sting−/− mice compared with WT mice. Thus, STING plays an important role in the maturation and class switching of IgE-producing B cells in allergic inflammation via Tfh cells.
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19
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Basto AP, Graca L. Regulation of antibody responses against self and foreign antigens by Tfr cells: implications for vaccine development. OXFORD OPEN IMMUNOLOGY 2021; 2:iqab012. [PMID: 36845568 PMCID: PMC9914583 DOI: 10.1093/oxfimm/iqab012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/24/2021] [Accepted: 06/16/2021] [Indexed: 01/04/2023] Open
Abstract
The production of antibodies can constitute a powerful protective mechanism against infection, but antibodies can also participate in autoimmunity and allergic responses. Recent advances in the understanding of the regulation of germinal centres (GC), the sites where B cells acquire the ability to produce high-affinity antibodies, offered new prospects for the modulation of antibody production in autoimmunity and vaccination. The process of B cell affinity maturation and isotype switching requires signals from T follicular helper (Tfh) cells. In addition, Foxp3+ T follicular regulatory (Tfr) cells represent the regulatory counterpart of Tfh in the GC reaction. Tfr cells were identified one decade ago and since then it has become clear their role in controlling the emergence of autoreactive B cell clones following infection and immunization. At the same time, Tfr cells are essential for fine-tuning important features of the humoral response directed to foreign antigens that are critical in vaccination. However, this regulation is complex and several aspects of Tfr cell biology are yet to be disclosed. Here, we review the current knowledge about the regulation of antibody responses against self and foreign antigens by Tfr cells and its implications for the future rational design of safer and more effective vaccines.
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Affiliation(s)
- Afonso P Basto
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisboa, Portugal,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Luis Graca
- Correspondence address. Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal. Tel: +351 217999411; Fax: +351 217999412: E-mail:
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20
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Koenig JFE, Bruton K, Phelps A, Grydziuszko E, Jiménez-Saiz R, Jordana M. Memory Generation and Re-Activation in Food Allergy. Immunotargets Ther 2021; 10:171-184. [PMID: 34136419 PMCID: PMC8200165 DOI: 10.2147/itt.s284823] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022] Open
Abstract
Recent evidence has highlighted the critical role of memory cells in maintaining lifelong food allergies, thereby identifying these cells as therapeutic targets. IgG+ memory B cells replenish pools of IgE-secreting cells upon allergen exposure, which contract thereafter due to the short lifespan of tightly regulated IgE-expressing cells. Advances in the detection and highly dimensional analysis of allergen-specific B and T cells from allergic patients have provided insight on their phenotype and function. The newly identified Th2A and Tfh13 populations represent a leap in our understanding of allergen-specific T cell phenotypes, although how these populations contribute to IgE memory responses remains poorly understood. Within, we discuss the mechanisms by which memory B and T cells are activated, integrating knowledge from human systems and fundamental research. We then focus on memory reactivation, specifically, on the pathways of secondary IgE responses. Throughout, we identify areas of future research which will help identify immunotargets for a transformative therapy for food allergy.
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Affiliation(s)
- Joshua F E Koenig
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Kelly Bruton
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Allyssa Phelps
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Emily Grydziuszko
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Rodrigo Jiménez-Saiz
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
- Department of Immunology, Instituto de Investigación Sanitaria Hospital Universitario de la Princesa (IIS-IP), Madrid, Spain
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB)-CSIC, Madrid, Spain
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria (UFV), Madrid, Spain
| | - Manel Jordana
- McMaster Immunology Research Centre, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
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21
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León B, Ballesteros-Tato A. Modulating Th2 Cell Immunity for the Treatment of Asthma. Front Immunol 2021; 12:637948. [PMID: 33643321 PMCID: PMC7902894 DOI: 10.3389/fimmu.2021.637948] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 01/21/2021] [Indexed: 12/14/2022] Open
Abstract
It is estimated that more than 339 million people worldwide suffer from asthma. The leading cause of asthma development is the breakdown of immune tolerance to inhaled allergens, prompting the immune system's aberrant activation. During the early phase, also known as the sensitization phase, allergen-specific T cells are activated and become central players in orchestrating the subsequent development of allergic asthma following secondary exposure to the same allergens. It is well-established that allergen-specific T helper 2 (Th2) cells play central roles in developing allergic asthma. As such, 80% of children and 60% of adult asthma cases are linked to an unwarranted Th2 cell response against respiratory allergens. Thus, targeting essential components of Th2-type inflammation using neutralizing antibodies against key Th2 modulators has recently become an attractive option for asthmatic patients with moderate to severe symptoms. In addition to directly targeting Th2 mediators, allergen immunotherapy, also known as desensitization, is focused on redirecting the allergen-specific T cells response from a Th2-type profile to a tolerogenic one. This review highlights the current understanding of the heterogeneity of the Th2 cell compartment, their contribution to allergen-induced airway inflammation, and the therapies targeting the Th2 cell pathway in asthma. Further, we discuss available new leads for successful targeting pulmonary Th2 cell responses for future therapeutics.
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Affiliation(s)
- Beatriz León
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Andre Ballesteros-Tato
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
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22
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Yao Y, Chen C, Yu D, Liu Z. Roles of follicular helper and regulatory T cells in allergic diseases and allergen immunotherapy. Allergy 2021; 76:456-470. [PMID: 33098663 DOI: 10.1111/all.14639] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/06/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022]
Abstract
Allergic diseases are characterized by overactive type 2 immune responses to allergens and immunoglobulin E (IgE)-mediated hypersensitivity. Emerging evidence suggests that follicular helper T (TFH ) cells, rather than type 2 T-helper (TH 2) cells, play a crucial role in controlling IgE production. However, follicular regulatory T (TFR ) cells, a specialized subset of regulatory T (TREG ) cells resident in B-cell follicles, restricts TFH cell-mediated help in extrafollicular antibody production, germinal center (GC) formation, immunoglobulin affinity maturation, and long-lived, high-affinity plasma and memory B-cell differentiation. In mouse models of allergic asthma and food allergy, CXCR5+ TFH cells, not CXCR5- conventional TH 2 cells, are needed to support IgE production, otherwise exacerbated by CXCR5+ TFR cell deletion. Upregulation of TFH cell activities, including a skewing toward type 2 TFH (TFH 2) and IL-13 producing TFH (TFH 13) phenotypes, and defects in TFR cells have been identified in patients with allergic diseases. Allergen immunotherapy (AIT) reinstates the balance between TFH and TFR cells in patients with allergic diseases, resulting in clinical benefits. Collectively, further understanding of TFH and TFR cells and their role in the immunopathogenesis of allergic diseases creates opportunities to develop novel therapeutic approaches.
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Affiliation(s)
- Yin Yao
- Department of Otolaryngology‐Head and Neck Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
- The University of Queensland Diamantina Institute Faculty of Medicine The University of Queensland Brisbane Qld Australia
| | - Cai‐Ling Chen
- Department of Otolaryngology‐Head and Neck Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
| | - Di Yu
- The University of Queensland Diamantina Institute Faculty of Medicine The University of Queensland Brisbane Qld Australia
| | - Zheng Liu
- Department of Otolaryngology‐Head and Neck Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
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23
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Chen JS, Grassmann JDS, Gowthaman U, Olyha SJ, Simoneau T, Berin MC, Eisenbarth SC, Williams A. Flow cytometric identification of T fh13 cells in mouse and human. J Allergy Clin Immunol 2021; 147:470-483. [PMID: 32709424 PMCID: PMC7854882 DOI: 10.1016/j.jaci.2020.04.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/25/2020] [Accepted: 04/21/2020] [Indexed: 11/22/2022]
Abstract
Anaphylaxis is a life-threatening allergic reaction caused by cross-linking of high-affinity IgE antibodies on the surface of mast cells and basophils. Understanding the cellular mechanisms that lead to high-affinity IgE production is required to develop better therapeutics for preventing this severe reaction. A recently discovered population of T follicular helper Tfh13 cells regulates the production of high-affinity IgE in mouse models of allergy and can also be found in patients with allergies with IgE antibodies against food or aeroallergens. Here we describe optimized protocols for identifying Tfh13 cells in both mice and humans.
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Affiliation(s)
- Jennifer S Chen
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Conn; Department of Immunobiology, Yale University School of Medicine, New Haven, Conn
| | | | - Uthaman Gowthaman
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Conn; Department of Immunobiology, Yale University School of Medicine, New Haven, Conn
| | - Sam J Olyha
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Conn; Department of Immunobiology, Yale University School of Medicine, New Haven, Conn
| | - Tregony Simoneau
- Department of Pediatrics, Harvard Medical School, Boston, Mass; Division of Respiratory Diseases, Boston Children's Hospital, Boston, Mass
| | - M Cecilia Berin
- Jaffe Food Allergy Institute/Immunology Institute, Icahn School of Medicine at Mount Sinai, New York
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Conn; Department of Immunobiology, Yale University School of Medicine, New Haven, Conn
| | - Adam Williams
- Jackson Laboratory for Genomic Medicine, Farmington, Conn; Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, Conn.
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24
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Yang Z, Wu CAM, Targ S, Allen CDC. IL-21 is a broad negative regulator of IgE class switch recombination in mouse and human B cells. J Exp Med 2020; 217:133860. [PMID: 32130409 PMCID: PMC7201927 DOI: 10.1084/jem.20190472] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 11/24/2019] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
IgE antibodies may elicit potent allergic reactions, and their production is tightly controlled. The tendency to generate IgE has been thought to reflect the balance between type 1 and type 2 cytokines, with the latter promoting IgE. Here, we reevaluated this paradigm by a direct cellular analysis, demonstrating that IgE production was not limited to type 2 immune responses yet was generally constrained in vivo. IL-21 was a critical negative regulator of IgE responses, whereas IFN-γ, IL-6, and IL-10 were dispensable. Follicular helper T cells were the primary source of IL-21 that inhibited IgE responses by directly engaging the IL-21 receptor on B cells and triggering STAT3-dependent signaling. We reconciled previous discordant results between mouse and human B cells and revealed that the inhibition of IgE class switch recombination by IL-21 was attenuated by CD40 signaling, whereas IgG1 class switch recombination was potentiated by IL-21 in the context of limited IL-4. These findings establish key features of the extrinsic regulation of IgE production by cytokines.
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Affiliation(s)
- Zhiyong Yang
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA.,Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA
| | - Chung-An M Wu
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA.,Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA
| | - Sasha Targ
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA.,Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA
| | - Christopher D C Allen
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA.,Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA.,Department of Anatomy, University of California, San Francisco, San Francisco, CA
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25
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Tfh Cells in Health and Immunity: Potential Targets for Systems Biology Approaches to Vaccination. Int J Mol Sci 2020; 21:ijms21228524. [PMID: 33198297 PMCID: PMC7696930 DOI: 10.3390/ijms21228524] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/16/2022] Open
Abstract
T follicular helper (Tfh) cells are a specialised subset of CD4+ T cells that play a significant role in the adaptive immune response, providing critical help to B cells within the germinal centres (GC) of secondary lymphoid organs. The B cell receptors of GC B cells undergo multiple rounds of somatic hypermutation and affinity maturation within the GC response, a process dependent on cognate interactions with Tfh cells. B cells that receive sufficient help from Tfh cells form antibody-producing long-lived plasma and memory B cells that provide the basis of decades of effective and efficient protection and are considered the gold standard in correlates of protection post-vaccination. However, the T cell response to vaccination has been understudied, and over the last 10 years, exponential improvements in the technological underpinnings of sampling techniques, experimental and analytical tools have allowed multidisciplinary characterisation of the role of T cells and the immune system as a whole. Of particular interest to the field of vaccinology are GCs and Tfh cells, representing a unique target for improving immunisation strategies. Here, we discuss recent insights into the unique journey of Tfh cells from thymus to lymph node during differentiation and their role in the production of high-quality antibody responses as well as their journey back to the periphery as a population of memory cells. Further, we explore their function in health and disease and the power of next-generation sequencing techniques to uncover their potential as modulators of vaccine-induced immunity.
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26
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Sharif H, Acharya S, Dhondalay GKR, Varricchi G, Krasner-Macleod S, Laisuan W, Switzer A, Lenormand M, Kashe E, Parkin RV, Yi Y, Koc M, Fedina O, Vilà-Nadal G, Marone G, Eifan A, Scadding GW, Fear DJ, Nadeau KC, Durham SR, Shamji MH. Altered chromatin landscape in circulating T follicular helper and regulatory cells following grass pollen subcutaneous and sublingual immunotherapy. J Allergy Clin Immunol 2020; 147:663-676. [PMID: 33160969 DOI: 10.1016/j.jaci.2020.10.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Allergen-specific immunotherapy is a disease-modifying treatment that induces long-term T-cell tolerance. OBJECTIVE We sought to evaluate the role of circulating CXCR5+PD-1+ T follicular helper (cTFH) and T follicular regulatory (TFR) cells following grass pollen subcutaneous immunotherapy (SCIT) and sublingual immunotherapy (SLIT) and the accompanying changes in their chromatin landscape. METHODS Phenotype and function of cTFH cells were initially evaluated in the grass pollen-allergic (GPA) group (n = 28) and nonatopic healthy controls (NAC, n = 13) by mathematical algorithms developed to manage high-dimensional data and cell culture, respectively. cTFH and TFR cells were further enumerated in NAC (n = 12), GPA (n = 14), SCIT- (n = 10), and SLIT- (n = 8) treated groups. Chromatin accessibility in cTFH and TFR cells was assessed by assay for transposase-accessible chromatin sequencing (ATAC-seq) to investigate epigenetic mechanisms underlying the differences between NAC, GPA, SCIT, and SLIT groups. RESULTS cTFH cells were shown to be distinct from TH2- and TH2A-cell subsets, capable of secreting IL-4 and IL-21. Both cytokines synergistically promoted B-cell class switching to IgE and plasma cell differentiation. Grass pollen allergen induced cTFH-cell proliferation in the GPA group but not in the NAC group (P < .05). cTFH cells were higher in the GPA group compared with the NAC group and were lower in the SCIT and SLIT groups (P < .01). Time-dependent induction of IL-4, IL-21, and IL-6 was observed in nasal mucosa following intranasal allergen challenge in the GPA group but not in SCIT and SLIT groups. TFR and IL-10+ cTFH cells were induced in SCIT and SLIT groups (all, P < .01). ATAC-seq analyses revealed differentially accessible chromatin regions in all groups. CONCLUSIONS For the first time, we showed dysregulation of cTFH cells in the GPA group compared to NAC, SCIT, and SLIT groups and induction of TFR and IL-10+ cTFH cells following SCIT and SLIT. Changes in the chromatin landscape were observed following allergen-specific immunotherapy in cTFH and TFR cells.
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Affiliation(s)
- Hanisah Sharif
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom; PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
| | - Swati Acharya
- Sean N. Parker Center for Asthma and Allergy Research, Department of Medicine, Stanford University, Stanford, Calif
| | - Gopal Krishna R Dhondalay
- Sean N. Parker Center for Asthma and Allergy Research, Department of Medicine, Stanford University, Stanford, Calif
| | - Gilda Varricchi
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Shoshanna Krasner-Macleod
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Wannada Laisuan
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom
| | - Amy Switzer
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Madison Lenormand
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom
| | - Elena Kashe
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Rebecca V Parkin
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom
| | - Yi Yi
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom
| | - Merve Koc
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom
| | - Oleksandra Fedina
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Gemma Vilà-Nadal
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Gianni Marone
- Division of Clinical Immunology and Allergy, Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Aarif Eifan
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Guy W Scadding
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - David J Fear
- Asthma UK Centre in Allergic Mechanisms of Asthma, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Kari C Nadeau
- Sean N. Parker Center for Asthma and Allergy Research, Department of Medicine, Stanford University, Stanford, Calif
| | - Stephen R Durham
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom
| | - Mohamed H Shamji
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Department of National Heart and Lung Institute, London, United Kingdom; Asthma UK Centre in Allergic Mechanisms of Asthma, London, Imperial College London, London, United Kingdom.
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27
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Yao Y, Wang N, Chen C, Pan L, Wang Z, Yunis J, Chen Z, Zhang Y, Hu S, Xu X, Zhu R, Yu D, Liu Z. CD23 expression on switched memory B cells bridges T-B cell interaction in allergic rhinitis. Allergy 2020; 75:2599-2612. [PMID: 32198890 DOI: 10.1111/all.14288] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/10/2020] [Accepted: 02/29/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND The contribution of B-cell subsets and T-B cell interaction to the pathogenesis of allergic rhinitis (AR) and mechanisms of allergen immunotherapy (AIT) remain poorly understood. This study aimed to outline circulating B-cell signature, the underlying mechanism, and its association with clinical response to AIT in patients with AR. METHODS IgD/CD27 and CD24/CD38 core gating systems were used to determine frequencies and phenotypes of B cells. Correlations between B cells, T cells, antigen-specific IgE, and disease severity in AR patients were investigated. Switched memory B cells were co-cultured with type 2 follicular helper T (Tfh2) cells and follicular regulatory T (Tfr) cells. Associations between B-cell subsets and clinical benefits of AIT were analyzed. RESULTS Frequencies and absolute numbers of circulating memory B cells were increased in AR patients. CD23 expression on CD19+ CD20+ CD27+ IgD- switched memory B cells was significantly enhanced and positively correlated with antigen-specific IgE levels, symptom scores, and Tfh2/Tfr cell ratio in AR patients. Compared with those from healthy controls, Tfh2 cells from AR patients had a greater capacity to induce CD23 expression on switched memory B cells via IL-4, which was unable to be sufficiently suppressed by AR-associated Tfr cells with defective IL-10 expression. CD23 expression on switched memory B cells was downregulated after 12-month AIT, which positively associated with disease remission in AR patients. CONCLUSION T-B cell interaction, bridged by CD23 expression particularly on switched memory B cells, may be involved in the disease pathogenesis and mechanism of AIT in patients with AR.
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Affiliation(s)
- Yin Yao
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Nan Wang
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Cai‐Ling Chen
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Li Pan
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Zhi‐Chao Wang
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Joseph Yunis
- Faculty of Medicine The University of Queensland Diamantina Institute The University of Queensland Brisbane QLD Australia
| | - Zhi‐An Chen
- Department of Immunology and Infectious Disease John Curtin School of Medical Research Australian National University Canberra ACT Australia
| | - Yu Zhang
- Laboratory of Immunology for Environment and Health Shandong Analysis and Test Center Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Si‐Tao Hu
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
| | - Xiao‐Yan Xu
- Department of Otolaryngology‐Head and Neck Surgery China Resources & Wisco General Hospital Wuhan China
| | - Rong‐Fei Zhu
- Department of Allergy Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
| | - Di Yu
- Department of Immunology and Infectious Disease John Curtin School of Medical Research Australian National University Canberra ACT Australia
- Laboratory of Immunology for Environment and Health Shandong Analysis and Test Center Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Zheng Liu
- Department of Otolaryngology‐Head and Neck Surgery Tongji Medical College Tongji Hospital Huazhong University of Science and Technology Wuhan China
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28
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Chandrasekhar JL, Cox KM, Erickson LD. B Cell Responses in the Development of Mammalian Meat Allergy. Front Immunol 2020; 11:1532. [PMID: 32765532 PMCID: PMC7379154 DOI: 10.3389/fimmu.2020.01532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/10/2020] [Indexed: 12/11/2022] Open
Abstract
Studies of meat allergic patients have shown that eating meat poses a serious acute health risk that can induce severe cutaneous, gastrointestinal, and respiratory reactions. Allergic reactions in affected individuals following meat consumption are mediated predominantly by IgE antibodies specific for galactose-α-1,3-galactose (α-gal), a blood group antigen of non-primate mammals and therefore present in dietary meat. α-gal is also found within certain tick species and tick bites are strongly linked to meat allergy. Thus, it is thought that exposure to tick bites promotes cutaneous sensitization to tick antigens such as α-gal, leading to the development of IgE-mediated meat allergy. The underlying immune mechanisms by which skin exposure to ticks leads to the production of α-gal-specific IgE are poorly understood and are key to identifying novel treatments for this disease. In this review, we summarize the evidence of cutaneous exposure to tick bites and the development of mammalian meat allergy. We then provide recent insights into the role of B cells in IgE production in human patients with mammalian meat allergy and in a novel mouse model of meat allergy. Finally, we discuss existing data more generally focused on tick-mediated immunomodulation, and highlight possible mechanisms for how cutaneous exposure to tick bites might affect B cell responses in the skin and gut that contribute to loss of oral tolerance.
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Affiliation(s)
- Jessica L Chandrasekhar
- Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Kelly M Cox
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Loren D Erickson
- Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA, United States.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
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29
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Krempski JW, Kobayashi T, Iijima K, McKenzie AN, Kita H. Group 2 Innate Lymphoid Cells Promote Development of T Follicular Helper Cells and Initiate Allergic Sensitization to Peanuts. THE JOURNAL OF IMMUNOLOGY 2020; 204:3086-3096. [PMID: 32366582 DOI: 10.4049/jimmunol.2000029] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 04/13/2020] [Indexed: 12/21/2022]
Abstract
Peanut allergy is a growing public concern; however, little is known about the immunological mechanism(s) that initiate the disease process. Our knowledge is also limited regarding the role of group 2 innate lymphoid cells (ILC2s) in regulating humoral immunity. To fill these major gaps in our knowledge, we investigated the immunological mechanisms involved in peanut allergen sensitization by using mouse models. To mimic environmental exposure in humans, naive BALB/c mice were exposed to peanut flour by inhalation without any exogenous adjuvants. When exposed to peanut flour, naive mice developed T follicular helper (Tfh) cells in their lung draining lymph nodes and produced IgE Abs to peanuts. Mice deficient in IL-13 showed decreased numbers of Tfh cells and germinal center B cells and produced significantly fewer IgE Abs. IL-13 was necessary and sufficient for induction of CD11c+ MHC class IIhi dendritic cells that are implicated in Tfh cell development. Importantly, lung ILC2s served as a predominant early source of IL-13 when naive mice were exposed to peanut flour. Furthermore, mice that are deficient in lung ILC2s by bone marrow transfer from Rora sg/sg mice or by genetic manipulation produced significantly fewer IgE Abs to peanuts compared with control mice. These findings suggest lung ILC2s that serve as a rapid source of IL-13 upon allergen exposure play a major role in Tfh cell development, IgE Ab production, and initiation of peanut allergy.
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Affiliation(s)
| | - Takao Kobayashi
- Division of Allergic Diseases, Department of Medicine, Mayo Clinic, Scottsdale, AZ 85259; and
| | - Koji Iijima
- Division of Allergic Diseases, Department of Medicine, Mayo Clinic, Scottsdale, AZ 85259; and
| | - Andrew N McKenzie
- Medical Research Council Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom
| | - Hirohito Kita
- Department of Immunology, Mayo Clinic, Rochester, MN 55905; .,Division of Allergic Diseases, Department of Medicine, Mayo Clinic, Scottsdale, AZ 85259; and
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30
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Gowthaman U, Chen JS, Eisenbarth SC. Regulation of IgE by T follicular helper cells. J Leukoc Biol 2020; 107:409-418. [PMID: 31965637 DOI: 10.1002/jlb.3ri1219-425r] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/02/2019] [Accepted: 12/09/2019] [Indexed: 12/24/2022] Open
Abstract
Allergies to food and environmental antigens have steeply grown to epidemic proportions. IgE antibodies are key mediators of allergic disease, including life-threatening anaphylaxis. There is now compelling evidence that one of the hallmarks of anaphylaxis-inducing IgE molecules is their high affinity for allergen, and the cellular pathway to high-affinity IgE is typically through sequential switching of IgG B cells. Further, in contrast to the previously held paradigm that a subset of CD4+ T cells called Th2 cells promotes IgE responses, recent studies suggest that T follicular helper cells are crucial for inducing anaphylactic IgE. Here we discuss recent studies that have enabled us to understand the nature, induction, and regulation of this enigmatic antibody isotype in allergic sensitization.
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Affiliation(s)
- Uthaman Gowthaman
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jennifer S Chen
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
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31
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Gong F, Zheng T, Zhou P. T Follicular Helper Cell Subsets and the Associated Cytokine IL-21 in the Pathogenesis and Therapy of Asthma. Front Immunol 2019; 10:2918. [PMID: 31921177 PMCID: PMC6923700 DOI: 10.3389/fimmu.2019.02918] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 11/27/2019] [Indexed: 12/13/2022] Open
Abstract
For many decades, T helper 2 (TH2) cells have been considered to predominantly regulate the pathogenic manifestations of allergic asthma, such as IgE-mediated sensitization, airway hyperresponsiveness, and eosinophil infiltration. However, recent discoveries have significantly shifted our understanding of asthma from a simple TH2 cell-dependent disease to a heterogeneous disease regulated by multiple T cell subsets, including T follicular helper (TFH) cells. TFH cells, which are a specialized cell population that provides help to B cells, have attracted intensive attention in the past decade because of their crucial role in regulating antibody response in a broad range of diseases. In particular, TFH cells are essential for IgE antibody class-switching. In this review, we summarize the recent progress regarding the role of TFH cells and their signature cytokine interleukin (IL)-21 in asthma from mouse studies and clinical reports. We further discuss future therapeutic strategies to treat asthma by targeting TFH cells and IL-21.
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Affiliation(s)
- Fang Gong
- Department of Laboratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Ting Zheng
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,Laboratory of Immunology for Environment and Health, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Pengcheng Zhou
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
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32
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Double negative T cells mediate Lag3-dependent antigen-specific protection in allergic asthma. Nat Commun 2019; 10:4246. [PMID: 31534137 PMCID: PMC6751182 DOI: 10.1038/s41467-019-12243-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 08/28/2019] [Indexed: 12/20/2022] Open
Abstract
Allergic asthma is an inflammatory disorder of the airway without satisfactory traditional therapies capable of controlling the underlying pathology. New approaches that can overcome the detrimental effects of immune dysregulation are thus desirable. Here we adoptively transfer ovalbumin (OVA) peptide-primed CD4−CD8− double negative T (DNT) cells intravenously into a mouse model of OVA-induced allergic asthma to find that OVA-induced airway hyperresponsiveness, lung inflammation, mucus production and OVA-specific IgG/IgE production are significantly suppressed. The immunosuppressive function of the OVA-specific DNT cells is dependent on the inhibition of CD11b+ dendritic cell function, T follicular helper cell proliferation, and IL-21 production. Mechanistically, Lag3 contributes to MHC-II antigen recognition and trogocytosis, thereby modulating the antigen-specific immune regulation by DNT cells. The effectiveness of ex vivo-generated allergen-specific DNT cells in alleviating airway inflammation thus supports the potential utilization of DNT cell-based therapy for the treatment of allergic asthma. Allergic asthma symptoms may be controlled, but currently no effective therapy exist to address the underlying pathology. Here the authors show, using mouse model of adoptive cell transfer, that CD4-CD8- T cells can suppress the function of dendritic cells and T follicular helper cells via Lag3 to provide allergen-specific protection from asthma.
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33
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Smeekens JM, Immormino RM, Balogh PA, Randell SH, Kulis MD, Moran TP. Indoor dust acts as an adjuvant to promote sensitization to peanut through the airway. Clin Exp Allergy 2019; 49:1500-1511. [PMID: 31444814 DOI: 10.1111/cea.13486] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/26/2019] [Accepted: 08/16/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND There is growing evidence that environmental peanut exposure through non-oral routes, including the skin and respiratory tract, can result in peanut sensitization. Environmental adjuvants in indoor dust can promote sensitization to inhaled antigens, but whether they contribute to peanut allergy development is unclear. OBJECTIVE We investigated whether indoor dust promotes airway sensitization to peanut and peanut allergy development in mice. METHODS Female and male C57BL/6J mice were exposed via the airways to peanut, indoor dust extract, or both for 2 weeks. Mice were then challenged with peanut and assessed for anaphylaxis. Peanut-specific immunoglobulins, peanut uptake by lung conventional dendritic cells (cDCs), lung innate cytokines, and T cell differentiation in lung-draining lymph nodes were quantified. Innate cytokine production by primary human bronchial epithelial cells exposed to indoor dust was also determined. RESULTS Inhalational exposure to low levels of peanut in combination with indoor dust, but neither alone, resulted in production of peanut-specific IgE and development of anaphylaxis upon peanut challenge. Indoor dust triggered production of innate cytokines in murine lungs and in primary human bronchial epithelial cells. Additionally, inhaled indoor dust stimulated maturation and migration of peanut-laden lung type 1 cDCs to draining lymph nodes. Inhalational exposure to peanut and indoor dust induced peanut-specific T helper 2 cell differentiation and accumulation of T follicular helper cells in draining lymph nodes, which were associated with increased B cell numbers and peanut-specific immunoglobulin production. CONCLUSIONS & CLINICAL RELEVANCE Indoor dust promotes airway sensitization to peanut and development of peanut allergy in mice. Our findings suggest that environmental adjuvants in indoor dust may be determinants of peanut allergy development in children.
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Affiliation(s)
- Johanna M Smeekens
- Department of Pediatrics, UNC School of Medicine, Chapel Hill, NC.,UNC Food Allergy Initiative, Chapel Hill, NC
| | | | - Peter A Balogh
- Department of Pediatrics, UNC School of Medicine, Chapel Hill, NC
| | - Scott H Randell
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC
| | - Michael D Kulis
- Department of Pediatrics, UNC School of Medicine, Chapel Hill, NC.,UNC Food Allergy Initiative, Chapel Hill, NC
| | - Timothy P Moran
- Department of Pediatrics, UNC School of Medicine, Chapel Hill, NC
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34
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Gowthaman U, Chen JS, Zhang B, Flynn WF, Lu Y, Song W, Joseph J, Gertie JA, Xu L, Collet MA, Grassmann JDS, Simoneau T, Chiang D, Berin MC, Craft JE, Weinstein JS, Williams A, Eisenbarth SC. Identification of a T follicular helper cell subset that drives anaphylactic IgE. Science 2019; 365:science.aaw6433. [PMID: 31371561 PMCID: PMC6901029 DOI: 10.1126/science.aaw6433] [Citation(s) in RCA: 284] [Impact Index Per Article: 56.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 07/18/2019] [Indexed: 12/15/2022]
Abstract
Cross-linking of high-affinity immunoglobulin E (IgE) results in the life-threatening allergic reaction anaphylaxis. Yet the cellular mechanisms that induce B cells to produce IgE in response to allergens remain poorly understood. T follicular helper (TFH) cells direct the affinity and isotype of antibodies produced by B cells. Although TFH cell-derived interleukin-4 (IL-4) is necessary for IgE production, it is not sufficient. We report a rare population of IL-13-producing TFH cells present in mice and humans with IgE to allergens, but not when allergen-specific IgE was absent or only low-affinity. These "TFH13" cells have an unusual cytokine profile (IL-13hiIL-4hiIL-5hiIL-21lo) and coexpress the transcription factors BCL6 and GATA3. TFH13 cells are required for production of high- but not low-affinity IgE and subsequent allergen-induced anaphylaxis. Blocking TFH13 cells may represent an alternative therapeutic target to ameliorate anaphylaxis.
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Affiliation(s)
- Uthaman Gowthaman
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jennifer S Chen
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Biyan Zhang
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - William F Flynn
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030, USA
| | - Yisi Lu
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Wenzhi Song
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Julie Joseph
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jake A Gertie
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Lan Xu
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Magalie A Collet
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030, USA
| | | | - Tregony Simoneau
- The Asthma Center, CT Children's Medical Center, Hartford, CT 06106, USA
| | - David Chiang
- Jaffe Food Allergy Institute and Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - M Cecilia Berin
- Jaffe Food Allergy Institute and Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Joseph E Craft
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jason S Weinstein
- Center for Immunity and Inflammation, Rutgers New Jersey Medical School, Newark, NJ 07101, USA
| | - Adam Williams
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030, USA. .,The Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT 06032, USA
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA. .,Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
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35
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Uwadiae FI, Pyle CJ, Walker SA, Lloyd CM, Harker JA. Targeting the ICOS/ICOS-L pathway in a mouse model of established allergic asthma disrupts T follicular helper cell responses and ameliorates disease. Allergy 2019; 74:650-662. [PMID: 30220084 PMCID: PMC6492018 DOI: 10.1111/all.13602] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 12/17/2022]
Abstract
Background Allergic asthma is characterized by chronic inflammation and remodelling of the airways, associated with dysregulated type 2 immune responses and allergen‐specific IgE. T follicular helper cells (TFH) are crucial in T‐dependent B‐cell responses and have been implicated in allergic airway disease (AAD). TFH, unlike other CD4+ T cells, are uniquely reliant on continuous ICOS signalling to maintain their phenotype after T‐cell priming; therefore, disrupting this signal can impair TFH responses. However, the contribution of TFH to disease during chronic aero‐allergen exposure and the therapeutic potential of targeting these cells have not been evaluated. Methods To establish AAD, female BALB/c mice were repeatedly exposed to house dust mite or Alternaria alternata three times a week for up to 5 weeks. To examine the impact of TFH on AAD, mice were allergen exposed for 5 weeks and co‐administered anti‐ICOS Ligand‐targeted antibodies, three times a week for the last 2 weeks. Results TFH were first observed in the lung‐draining lymph nodes and with further exposure were also found locally within the lungs. TFH accumulated with sustained allergen exposure, alongside germinal centre (GC) B cells. Blockade of ICOS signalling after AAD establishment successfully depleted TFH but did not affect the differentiation of other CD4+ T‐cell subsets. This reduced GC responses, allergen‐specific IgE, inflammation, pulmonary IL‐13 and airway hyper‐responsiveness. Conclusions TFH are crucial in the regulation of AAD and the ICOS/ICOS‐L pathway could represent a novel therapeutic target in allergic asthma.
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Affiliation(s)
- Faith I. Uwadiae
- Inflammation, Repair and Development Section National Heart and Lung Institute Imperial College London London UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma London UK
| | - Chloe J. Pyle
- Inflammation, Repair and Development Section National Heart and Lung Institute Imperial College London London UK
| | - Simone A. Walker
- Inflammation, Repair and Development Section National Heart and Lung Institute Imperial College London London UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma London UK
| | - Clare M. Lloyd
- Inflammation, Repair and Development Section National Heart and Lung Institute Imperial College London London UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma London UK
| | - James A. Harker
- Inflammation, Repair and Development Section National Heart and Lung Institute Imperial College London London UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma London UK
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36
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Sharif H, Singh I, Kouser L, Mösges R, Bonny MA, Karamani A, Parkin RV, Bovy N, Kishore U, Robb A, Katotomichelakis M, Holtappels G, Derycke L, Corazza F, von Frenckell R, Wathelet N, Duchateau J, Legon T, Pirotton S, Durham SR, Bachert C, Shamji MH. Immunologic mechanisms of a short-course of Lolium perenne peptide immunotherapy: A randomized, double-blind, placebo-controlled trial. J Allergy Clin Immunol 2019; 144:738-749. [PMID: 30844425 DOI: 10.1016/j.jaci.2019.02.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 02/05/2019] [Accepted: 02/11/2019] [Indexed: 01/30/2023]
Abstract
BACKGROUND A 3-week short-course of adjuvant-free hydrolysates of Lolium perenne peptide (LPP) immunotherapy for rhinoconjunctivitis with or without asthma over 4 physician visits is safe, well tolerated, and effective. OBJECTIVE We sought to investigate immunologic mechanisms of LPP immunotherapy in a subset of patients who participated in a phase III, multicenter, randomized, double-blind, placebo-controlled trial (clinical.govNCT02560948). METHODS Participants were randomized to receive LPP (n = 21) or placebo (n = 11) for 3 weeks over 4 visits. Grass pollen-induced basophil, T-cell, and B-cell responses were evaluated before treatment (visit [V] 2), at the end of treatment (V6), and after the pollen season (V8). RESULTS Combined symptom and rescue medication scores (CSMS) were lower during the peak pollen season (-35.1%, P = .03) and throughout the pollen season (-53.7%, P = .03) in the LPP-treated group compared with those in the placebo-treated group. Proportions of CD63+ and CD203cbrightCRTH2+ basophils were decreased following LPP treatment at V6 (10 ng/mL, P < .0001) and V8 (10 ng/mL, P < .001) compared to V2. No change in the placebo-treated group was observed. Blunting of seasonal increases in levels of grass pollen-specific IgE was observed in LPP-treated but not placebo-treated group. LPP immunotherapy, but not placebo, was associated with a reduction in proportions of IL-4+ TH2 (V6, P = .02), IL-4+ (V6, P = .003; V8, P = .004), and IL-21+ (V6, P = .003; V8, P = .002) follicular helper T cells. Induction of FoxP3+, follicular regulatory T, and IL-10+ regulatory B cells were observed at V6 (all P < .05) and V8 (all P < .05) in LPP-treated group. Induction of regulatory B cells was associated with allergen-neutralizing IgG4-blocking antibodies. CONCLUSION For the first time, we demonstrate that the immunologic mechanisms of LPP immunotherapy are underscored by immune modulation in the T- and B-cell compartments, which is necessary for its effect.
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Affiliation(s)
- Hanisah Sharif
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | - Iesha Singh
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | - Lubna Kouser
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | - Ralph Mösges
- Institute of Medical Statistics, Informatics and Epidemiology (IMSIE), Cologne, Germany
| | | | - Angeliki Karamani
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | - Rebecca V Parkin
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | | | | | - Abigail Robb
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | | | | | - Lara Derycke
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - Francis Corazza
- Laboratory of Clinical Biology, CHU Brugmann, Brussels, Belgium
| | | | | | | | | | | | - Stephen R Durham
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom
| | - Claus Bachert
- Upper Airways Research Laboratory, Ghent University, Ghent, Belgium
| | - Mohamed H Shamji
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair & Development, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, United Kingdom.
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Abstract
Pulmonary respiration inevitably exposes the mucosal surface of the lung to potentially noxious stimuli, including pathogens, allergens, and particulates, each of which can trigger pulmonary damage and inflammation. As inflammation resolves, B and T lymphocytes often aggregate around large bronchi to form inducible Bronchus-Associated Lymphoid Tissue (iBALT). iBALT formation can be initiated by a diverse array of molecular pathways that converge on the activation and differentiation of chemokine-expressing stromal cells that serve as the scaffolding for iBALT and facilitate the recruitment, retention, and organization of leukocytes. Like conventional lymphoid organs, iBALT recruits naïve lymphocytes from the blood, exposes them to local antigens, in this case from the airways, and supports their activation and differentiation into effector cells. The activity of iBALT is demonstrably beneficial for the clearance of respiratory pathogens; however, it is less clear whether it dampens or exacerbates inflammatory responses to non-infectious agents. Here, we review the evidence regarding the role of iBALT in pulmonary immunity and propose that the final outcome depends on the context of the disease.
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38
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Lee S, Shan J, Aldossary H, Gaudreault V, Bazett M, Fixman ED. STAT6 inhibitory peptide reduces dendritic cell migration to the lymph nodes to control Th2 adaptive immunity in the mouse lung. Eur J Immunol 2018; 49:157-169. [PMID: 30427538 DOI: 10.1002/eji.201847534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 10/24/2018] [Accepted: 11/12/2018] [Indexed: 12/22/2022]
Abstract
Type 2 immunity in the lung is promoted through the release of innate cytokines, including TSLP, from lung structural cells. These cytokines drive Type 2 immunity in part through upregulation of OX40L on dendritic cells (DCs). DCs expressing OX40L are potent inducers of Th2 differentiation. We have shown previously that STAT6 inhibitory peptide (STAT6-IP), a cell penetrating peptide designed to inhibit the STAT6 transcription factor, reduces the induction of Th2 adaptive immunity in murine models of respiratory syncytial virus infection. Here we show that intranasal administration of STAT6-IP at the time of antigen priming with ovalbumin (OVA), in conjunction with the Nod2 agonist, MDP, reduced frequencies of CD11b+ lung DCs expressing OX40L. Consistent with these reductions, fewer activated DCs were localized to the lung draining lymph nodes in STAT6-IP-treated mice. Upon OVA challenge four weeks later, mice treated with STAT6-IP at the time of OVA/MDP priming did not develop airway hyperresponsiveness (AHR) and had reduced influx of eosinophils into the airways, mucus production, and serum OVA-specific IgE levels. Our findings provide evidence that the long-lasting inhibitory effects of STAT6-IP are due in part to inhibition of DC responses that drive maladaptive Th2 adaptive immunity and allergic airways disease.
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Affiliation(s)
- Soojin Lee
- 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
| | - Haya Aldossary
- 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
| | - Mark Bazett
- 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
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39
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Wang YT, Liu HC, Chen HC, Lee YC, Tsai TC, Chen HL, Fan HC, Chen CM. Oral immunotherapy with the ingestion of house dust mite extract in a murine model of allergic asthma. Allergy Asthma Clin Immunol 2018; 14:43. [PMID: 30356799 PMCID: PMC6190578 DOI: 10.1186/s13223-018-0269-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 05/23/2018] [Indexed: 12/12/2022] Open
Abstract
Background Allergen-specific immunotherapy (ASIT) has the potential to modify allergic diseases, and it is also considered a potential therapy for allergic asthma. House dust mite (HDM) allergens, a common source of airborne allergen in human diseases, have been developed as an immunotherapy for patients with allergic asthma via the subcutaneous and sublingual routes. Oral immunotherapy with repeated allergen ingestion is emerging as another potential modality of ASIT. The aim of this study was to evaluate the therapeutic efficacy of the oral ingestion of HDM extracts in a murine model of allergic asthma. Methods BABL/c mice were sensitized twice by intraperitoneal injection of HDM extracts and Al(OH)3 on day 1 and day 8. Then, the mice received challenge to induce airway inflammation by intratracheal instillation of HDM extracts on days 29–31. The treatment group received immunotherapy with oral HDM extracts ingestion before the challenge. All the mice were sacrificed on day 32 for bronchoalveolar inflammatory cytokines, mediastinal lymph node T cells, lung histology, and serum HDM-specific immunoglobulins analyses. Results Upon HDM sensitization and following challenge, a robust Th2 cell response and eosinophilic airway inflammation were observed in mice of the positive control group. The mice treated with HDM extracts ingestion had decreased eosinophilic airway inflammation, suppressed HDM-specific Th2 cell responses in the mediastinal lymph nodes, and attenuated serum HDM-specific IgE levels. Conclusions Oral immunotherapy with HDM extracts ingestion was demonstrated to have a partial therapeutic effect in the murine model of allergic asthma. This study may serve as the basis for the further development of oral immunotherapy with HDM extracts in allergic asthma.
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Affiliation(s)
- Yao-Tung Wang
- 1Division of Pulmonary Medicine, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.,2School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Hsu-Chung Liu
- 2School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,3Division of Chest Medicine, Department of Internal Medicine, Cheng Ching Hospital, Taichung, Taiwan.,4Department of Life Sciences, College of Life Sciences, National Chung Hsing University, No. 250, Kuo-Kuang Road, Taichung, 402 Taiwan
| | - Hui-Chen Chen
- 5Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yen-Ching Lee
- 4Department of Life Sciences, College of Life Sciences, National Chung Hsing University, No. 250, Kuo-Kuang Road, Taichung, 402 Taiwan
| | - Tung-Chou Tsai
- 4Department of Life Sciences, College of Life Sciences, National Chung Hsing University, No. 250, Kuo-Kuang Road, Taichung, 402 Taiwan
| | - Hsiao-Ling Chen
- Department of Bioresources, Da-Yeh University, Changhwa, Taiwan
| | - Hueng-Chuen Fan
- 7Department of Pediatrics, Tungs' Taichung Metroharbor Hospital, No. 699, Sec. 8, Taiwan Blvd., Wuchi, Taichung, 435 Taiwan.,8Department of Medical Research, Tungs' Taichung Metroharbor Hospital, No. 699, Sec. 8, Taiwan Blvd., Wuchi, Taichung, 435 Taiwan.,Department of Rehabilitation, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Chuan-Mu Chen
- 4Department of Life Sciences, College of Life Sciences, National Chung Hsing University, No. 250, Kuo-Kuang Road, Taichung, 402 Taiwan.,10The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,11Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
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40
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Abstract
The pathogenesis of allergic asthma is primarily characterized by abnormality in immunoglobin(Ig)E pathway, suggesting a possible role for follicular helper T cells (Tfh) in the genesis of excessive IgE accumulation. The blood chemokine (C-X-C motif) receptor 5 (CXCR)5+CD4+ T cells, known as "circulating" Tfh, share common functional characteristics with Tfh cells from germinal centers. The aim of this study was to determine the phenotypes and functions of circulating CXCR5+CD4+ T cells in allergic asthmatics. Here we found the frequency of the circulating CXCR5+CD4+ T cells was raised in allergic asthma compared with healthy control (HC). Phenotypic assays showed that activated circulating CXCR5+CD4+ T cells display the key features of Tfh cells, including invariably coexpressed programmed cell death (PD)-1 and inducible costimulator (ICOS). The frequency of interleukin IL-4+-, IL-21+-producing CXCR5+CD4+ T cells was increased in allergic asthma patients compared with HC. Furthermore, sorted circulating CXCR5+CD4+ T cells from allergic asthma patients boosted IgE production in coculture assay which could be inhibited by IL-4 or IL-21 blockage. Interestingly, IL-4+-, IL-21+-CXCR5+CD4+ T cells positively correlated with total IgE in the blood. Our data indicated that circulating CXCR5+CD4+ T cells may have a significant role in facilitating IgE production in allergic asthma patients.
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41
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Abstract
Asthma is a common chronic lung disease that affects 300 million people worldwide. It causes the airways of the lungs to swell and narrow due to inflammation (swelling and excess mucus build-up in the airways) and airway constriction (tightening of the muscles surrounding the airways). Atopic asthma is the most common form of asthma, and is triggered by inhaled allergens that ultimately promote the activation of the Th2-like T cells and the development of Th2-mediated chronic inflammation. Different subsets of T cells, including T follicular helper cells, tissue-resident T, cells and Th2 effector cells, play different functions during allergic immune response. Dendritic cells (DCs) are known to play a central role in initiating allergic Th2-type immune responses and in the development of the T cell phenotype. However, this function depends on the complex interaction with other cells of the immune system and determines whether the response to environmental allergens will be one of tolerance or allergic inflammation. This review discusses cell interactions leading to the initiation and maintenance of allergic Th2-type immune responses, particularly those associated with allergic asthma.
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Thomas WR. House Dust Mite Allergens: New Discoveries and Relevance to the Allergic Patient. Curr Allergy Asthma Rep 2017; 16:69. [PMID: 27600386 DOI: 10.1007/s11882-016-0649-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE OF REVIEW Recent findings on house dust allergens and their contribution to knowledge that will significantly impact on current and future allergy treatments are appraised. RECENT FINDINGS Quantitation of IgE binding to a spectrum of allergen components in several independent studies in varying locations has largely affirmed the main components as the groups 1 and 2 and possibly 23 allergens with mid-tier contributions from the groups 4, 5, 7, and 21. Prevalent binding to Der p 23 has been recapitulated sometimes with low titers. The IgE of non-asthmatic atopic subjects binds at lower titer and to fewer components than that of asthmatics, and their IgG binding relative to IgE is higher especially for children hospitalized for exacerbation. The higher IgG ratios were associated with increased IL-10 a cytokine more readily induced from T cells of allergic subjects. Peptides representing the groups 1 and 2 allergens can be used to stimulate ex vivo T cells showing responses correlating with IgE binding and providing a valuable tool for ascertaining the contribution of IgE and T cells to disease. Also, the induction of Th2 and follicular helper T cells are shown to make different contributions in mice. Cross-reactivity of IgE binding assays with high-titer cross-reactive antibodies induced by scabies is a problem in the many areas of the world where scabies is highly prevalent and endemic and from recent increases in immigration. In the last few years, allergen research has produced results that warrant rapid translation into diagnostic tools and the formulation of allergen components for immunotherapy.
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Affiliation(s)
- Wayne R Thomas
- Telethon Kids Institute, University of Western Australia, 100 Roberts Road, Subiaco, Western Australia, 6008, Australia.
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