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Dukhno O, Ghosh S, Greiner V, Bou S, Godet J, Muhr V, Buchner M, Hirsch T, Mély Y, Przybilla F. Targeted Single Particle Tracking with Upconverting Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11217-11227. [PMID: 38386424 DOI: 10.1021/acsami.3c17116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Single particle tracking (SPT) is a powerful technique for real-time microscopic visualization of the movement of individual biomolecules within or on the surface of living cells. However, SPT often suffers from the suboptimal performance of the photon-emitting labels used to tag the biomolecules of interest. For example, fluorescent dyes have poor photostability, while quantum dots suffer from blinking that hampers track acquisition and interpretation. Upconverting nanoparticles (UCNPs) have recently emerged as a promising anti-Stokes luminescent label for SPT. In this work, we demonstrated targeted SPT using UCNPs. For this, we synthesized 30 nm diameter doped UCNPs and coated them with amphiphilic polymers decorated with polyethylene glycol chains to make them water-dispersible and minimize their nonspecific interactions with cells. Coated UCNPs highly homogeneous in brightness (as confirmed by a single particle investigation) were functionalized by immunoglobulin E (IgE) using a biotin-streptavidin strategy. Using these IgE-UCNP SPT labels, we tracked high-affinity IgE receptors (FcεRI) on the membrane of living RBL-2H3 mast cells at 37 °C in the presence and absence of antigen and obtained good agreement with the literature. Moreover, we used the FcεRI-IgE receptor-antibody system to directly compare the performance of UCNP-based SPT labels to organic dyes (AlexaFluor647) and quantum dots (QD655). Due to their photostability as well as their backgroundless and continuous luminescence, SPT trajectories obtained with UCNP labels are no longer limited by the photophysics of the label but only by the dynamics of the system and, in particular, the movement of the label out of the field of view and/or focal plane.
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Affiliation(s)
- Oleksii Dukhno
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
| | - Srijayee Ghosh
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
| | - Vanille Greiner
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
| | - Sophie Bou
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
| | - Julien Godet
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
- IMAGeS team at ICube, UMR 7357, CNRS, Université de Strasbourg, Strasbourg 67000, France
| | - Verena Muhr
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Markus Buchner
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Thomas Hirsch
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Yves Mély
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
| | - Frédéric Przybilla
- Laboratory of Biomaging and Pathologies, UMR 7021 CNRS, University of Strasbourg, Strasbourg 67000, France
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Wu T, He J, Yan S, Li J, Chen K, Zhang D, Cheng M, Xiang Z, Fang Y. Human placental extract suppresses mast cell activation and induces mast cell apoptosis. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2023; 19:98. [PMID: 38012745 PMCID: PMC10683163 DOI: 10.1186/s13223-023-00850-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/18/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Human placental extract (HPE) has been documented to facilitate the healing of certain disorders including allergy. However, the effects of HPE on the functionality of mast cells, a critical cell type in allergic diseases, have not been reported. METHODS To investigate the effects of HPE on the regulation of allergy with respect to the biological functions of mast cells, the mast cell line C57 or HMC-1 cells were treated with HPE followed by the assessment of cell proliferation, apoptosis, activation, chemotaxis and phagocytosis. Mouse peritoneal mast cells were also investigated for their responses to induction of apoptosis by HPE in vivo. Furthermore, the effect of HPE on mast cell degranulation was confirmed using the passive cutaneous anaphylaxis (PCA) assay, an acute allergy model. RESULTS HPE was capable of suppressing mast cell proliferation and inducing mast cell apoptosis. Mast cell degranulation in response to compound 48/80- or anti-DNP IgE and DNP-mediated activation was suppressed. In addition, treatment with HPE compromised the production of cytokines by mast cells and cell chemotaxis. These observations were consistent with the dampened passive cutaneous anaphylaxis (PCA) assay following treatment with HPE. CONCLUSION This study revealed a suppressive effect of HPE on overall mast cell activities, suggesting a potential regulatory role of HPE on the alleviation of allergic diseases through mast cells.
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Affiliation(s)
- Tongqian Wu
- Center for Clinical Laboratories, Affiliated Hospital of Guizhou Medical University, Guiyi Street 28, Guiyang, 550004, Guizhou, China
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
- Clinical Research Center, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Jingjing He
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Shirong Yan
- Center for Clinical Laboratories, Affiliated Hospital of Guizhou Medical University, Guiyi Street 28, Guiyang, 550004, Guizhou, China
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Jing Li
- Center for Clinical Laboratories, Affiliated Hospital of Guizhou Medical University, Guiyi Street 28, Guiyang, 550004, Guizhou, China
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Ke Chen
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Dingshan Zhang
- School of Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Mingliang Cheng
- Department of Infectious Disease, Affiliated Hospital of Guizhou Medical University, Guiyi Street 28, Guiyang, 550004, Guizhou, China.
| | - Zou Xiang
- Department of Health Technology and Informatics, Faculty of Health and Social Science, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Yu Fang
- Center for Clinical Laboratories, Affiliated Hospital of Guizhou Medical University, Guiyi Street 28, Guiyang, 550004, Guizhou, China.
- School of Laboratory Science, Guizhou Medical University, Guiyang, China.
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Dileepan KN, Raveendran VV, Sharma R, Abraham H, Barua R, Singh V, Sharma R, Sharma M. Mast cell-mediated immune regulation in health and disease. Front Med (Lausanne) 2023; 10:1213320. [PMID: 37663654 PMCID: PMC10470157 DOI: 10.3389/fmed.2023.1213320] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/17/2023] [Indexed: 09/05/2023] Open
Abstract
Mast cells are important components of the immune system, and they perform pro-inflammatory as well as anti-inflammatory roles in the complex process of immune regulation in health and disease. Because of their strategic perivascular localization, sensitivity and adaptability to the microenvironment, and ability to release a variety of preformed and newly synthesized effector molecules, mast cells perform unique functions in almost all organs. Additionally, Mast cells express a wide range of surface and cytoplasmic receptors which enable them to respond to a variety of cytokines, chemicals, and pathogens. The mast cell's role as a cellular interface between external and internal environments as well as between vasculature and tissues is critical for protection and repair. Mast cell interactions with different immune and nonimmune cells through secreted inflammatory mediators may also turn in favor of disease promoting agents. First and forefront, mast cells are well recognized for their multifaceted functions in allergic diseases. Reciprocal communication between mast cells and endothelial cells in the presence of bacterial toxins in chronic/sub-clinical infections induce persistent vascular inflammation. We have shown that mast cell proteases and histamine induce endothelial inflammatory responses that are synergistically amplified by bacterial toxins. Mast cells have been shown to exacerbate vascular changes in normal states as well as in chronic or subclinical infections, particularly among cigarette smokers. Furthermore, a potential role of mast cells in SARS-CoV-2-induced dysfunction of the capillary-alveolar interface adds to the growing understanding of mast cells in viral infections. The interaction between mast cells and microglial cells in the brain further highlights their significance in neuroinflammation. This review highlights the significant role of mast cells as the interface that acts as sensor and early responder through interactions with cells in systemic organs and the nervous system.
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Affiliation(s)
- Kottarappat N. Dileepan
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Vineesh V. Raveendran
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Rishi Sharma
- Department of Medicine, School of Medicine, University of Missouri, Kansas City, MO, United States
| | - Harita Abraham
- Division of Allergy, Clinical Immunology and Rheumatology, Department of Medicine, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Rajat Barua
- Cardiology Section, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Vikas Singh
- Neurology Section, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Ram Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
| | - Mukut Sharma
- Research and Development Service, Kansas City Veterans Affairs Medical Center, Kansas City, MO, United States
- Midwest Veterans’ Biomedical Research Foundation (MVBRF), Kansas City VA Medical Center, Kansas, MO, United States
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Wu T, Yan S, Yeh YW, Fang Y, Xiang Z. FcγR-dependent apoptosis regulates tissue persistence of mucosal and connective tissue mast cells. Eur J Immunol 2023; 53:e2250221. [PMID: 37137469 DOI: 10.1002/eji.202250221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/05/2023]
Abstract
Rodent mast cells can be divided into two major subtypes: the mucosal mast cell (MMC) and the connective tissue mast cell (CTMC). A decade-old observation revealed a longer lifespan for CTMC compared with MMC. The precise mechanisms underlying such differential tissue persistence of mast cell subsets have not been described. In this study, we have discovered that mast cells expressing only one receptor, either FcγRIIB or FcγRIIIA, underwent caspase-independent apoptosis in response to IgG immune complex treatment. Lower frequencies of CTMC in mice that lacked either FcγRIIB or FcγRIIIA compared with WT mice were recorded, especially in aged mice. We proposed that this paradigm of FcγR-mediated mast cell apoptosis could account for the more robust persistence of CTMC, which express both FcγRIIB and FcγRIIIA, than MMC, which express only FcγRIIB. Importantly, we reproduced these results using a mast cell engraftment model, which ruled out possible confounding effects of mast cell recruitment or FcγR expression by other cells on mast cell number regulation. In conclusion, our work has uncovered an FcγR-dependent mast cell number regulation paradigm that might provide a mechanistic explanation for the long-observed differential mast cell subset persistence in tissues.
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Affiliation(s)
- Tongqian Wu
- Center for Clinical Laboratory, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P. R. China
- School for Clinical Laboratory, Guizhou Medical University, Guiyang, 550004, P. R. China
| | - Shirong Yan
- Center for Clinical Laboratory, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P. R. China
- School for Clinical Laboratory, Guizhou Medical University, Guiyang, 550004, P. R. China
| | - Yu-Wen Yeh
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hong Kong, P. R. China
| | - Yu Fang
- Center for Clinical Laboratory, Affiliated Hospital of Guizhou Medical University, Guiyang, 550004, P. R. China
- School for Clinical Laboratory, Guizhou Medical University, Guiyang, 550004, P. R. China
| | - Zou Xiang
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hong Kong, P. R. China
- Department of Microbiology and Immunology, Mucosal Immunobiology and Vaccine Research Center, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
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Munera M, Buendía E, Sanchez A, Viasus D, Sanchez J. AQP4 as a vintage autoantigen: what do we know till now? Heliyon 2022; 8:e12132. [PMID: 36506380 PMCID: PMC9730132 DOI: 10.1016/j.heliyon.2022.e12132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 09/09/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Affiliation(s)
- M. Munera
- Medical Research Group (GINUMED), Universitary Corporation Rafael Nuñez, Colombia,Corresponding author.
| | - E. Buendía
- Faculty of Medicine, University of Cartagena, Cartagena, Colombia,Department of Internal Medicine, Centro Hospitalario Serena del Mar, Cartagena, Colombia,Clinical and Biomedical Research Group, Faculty of Medicine, University of Cartagena, Colombia
| | - A. Sanchez
- Faculty of Medicine, University of Cartagena, Cartagena, Colombia,Clinical and Biomedical Research Group, Faculty of Medicine, University of Cartagena, Colombia
| | - D. Viasus
- Division of Health Sciences, Universidad del Norte, Barranquilla, Colombia
| | - J. Sanchez
- Group of Clinical and Experimental Allergy (GACE), IPS Universitaria, University of Antioquia, Medellín, Colombia
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Alvarado D, Maurer M, Gedrich R, Seibel SB, Murphy MB, Crew L, Goldstein J, Crocker A, Vitale LA, Morani PA, Thomas LJ, Hawthorne TR, Keler T, Young D, Crowley E, Kankam M, Heath‐Chiozzi M. Anti-KIT monoclonal antibody CDX-0159 induces profound and durable mast cell suppression in a healthy volunteer study. Allergy 2022; 77:2393-2403. [PMID: 35184297 PMCID: PMC9544977 DOI: 10.1111/all.15262] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/25/2022] [Accepted: 01/31/2022] [Indexed: 12/18/2022]
Abstract
Background Mast cells (MC) are powerful inflammatory immune sentinel cells that drive numerous allergic, inflammatory, and pruritic disorders when activated. MC‐targeted therapies are approved in several disorders, yet many patients have limited benefit suggesting the need for approaches that more broadly inhibit MC activity. MCs require the KIT receptor and its ligand stem cell factor (SCF) for differentiation, maturation, and survival. Here we describe CDX‐0159, an anti‐KIT monoclonal antibody that potently suppresses MCs in human healthy volunteers. Methods CDX‐0159‐mediated KIT inhibition was tested in vitro using KIT‐expressing immortalized cells and primary human mast cells. CDX‐0159 safety and pharmacokinetics were evaluated in a 13‐week good laboratory practice (GLP)‐compliant cynomolgus macaque study. A single ascending dose (0.3, 1, 3, and 9 mg/kg), double‐blinded placebo‐controlled phase 1a human healthy volunteer study (n = 32) was conducted to evaluate the safety, pharmacokinetics, and pharmacodynamics of CDX‐0159. Results CDX‐0159 inhibits SCF‐dependent KIT activation in vitro. Fc modifications in CDX‐0159 led to elimination of effector function and reduced serum clearance. In cynomolgus macaques, multiple high doses were safely administered without a significant impact on hematology, a potential concern for KIT inhibitors. A single dose of CDX‐0159 in healthy human subjects was generally well tolerated and demonstrated long antibody exposure. Importantly, CDX‐0159 led to dose‐dependent, profound suppression of plasma tryptase, a MC‐specific protease associated with tissue MC burden, indicative of systemic MC suppression or ablation. Conclusion CDX‐0159 administration leads to systemic mast cell ablation and may represent a safe and novel approach to treat mast cell‐driven disorders.
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Affiliation(s)
| | - Marcus Maurer
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité ‐ Universtätsmedizin Berlin Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
| | | | | | | | - Linda Crew
- Celldex Therapeutics Hampton New Jersey USA
| | | | | | | | | | | | | | | | | | | | - Martin Kankam
- Altasciences Clinical Kansas Overland Park Kansas USA
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Tesfaye A, Rodríguez‐Nogales A, Benedé S, Fernández TD, Paris JL, Rodriguez MJ, Jiménez‐Sánchez IM, Bogas G, Mayorga C, Torres MJ, Montañez MI. Nanoarchitectures for efficient IgE cross-linking on effector cells to study amoxicillin allergy. Allergy 2021; 76:3183-3193. [PMID: 33784407 PMCID: PMC8518075 DOI: 10.1111/all.14834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/28/2021] [Accepted: 03/14/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Amoxicillin (AX) is nowadays the β-lactam that more frequently induces immediate allergic reactions. Nevertheless, diagnosis of AX allergy is occasionally challenging due to risky in vivo tests and non-optimal sensitivity of in vitro tests. AX requires protein haptenation to form multivalent conjugates with increased size to be immunogenic. Knowing adduct structural features for promoting effector cell activation would help to improve in vitro tests. We aimed to identify the optimal structural requirement in specific cellular degranulation to AX using well-precised nanoarchitectures of different lengths. METHOD We constructed eight Bidendron Antigens (BiAns) based on polyethylene glycol (PEG) linkers of different lengths (600-12,000 Da), end-coupled with polyamidoamine dendrons that were terminally multi-functionalized with amoxicilloyl (AXO). In vitro IgE recognition was studied by competitive radioallergosorbent test (RAST) and antibody-nanoarchitecture complexes by transmission electron microscopy (TEM). Their allergenic activity was evaluated using bone marrow-derived mast cells (MCs) passively sensitized with mouse monoclonal IgE against AX and humanized RBL-2H3 cells sensitized with polyclonal antibodies from sera of AX-allergic patients. RESULTS All BiAns were recognized by AX-sIgE. Dose-dependent activation responses were observed in both cellular assays, only with longer structures, containing spacers in the range of PEG 6000-12,000 Da. Consistently, greater proportion of immunocomplexes and number of antibodies per complex for longer BiAns were visualized by TEM. CONCLUSIONS BiAns are valuable platforms to study the mechanism of effector cell activation. These nanomolecular tools have demonstrated the importance of the adduct size to promote effector cell activation in AX allergy, which will impact for improving in vitro diagnostics.
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Affiliation(s)
- Amene Tesfaye
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
| | - Alba Rodríguez‐Nogales
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
| | - Sara Benedé
- Instituto de Investigación en Ciencias de la Alimentación (CIALCSIC‐UAM)MadridSpain
| | - Tahía D. Fernández
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
- Departamento de Biología Celular Genética y FisiologíaFacultad de CienciasUniversidad de MálagaMálagaSpain
| | - Juan L. Paris
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
| | - Maria J. Rodriguez
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
| | - Isabel M. Jiménez‐Sánchez
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
| | - Gador Bogas
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
- Allergy UnitHospital Regional Universitario de MálagaMálagaSpain
| | - Cristobalina Mayorga
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
- Allergy UnitHospital Regional Universitario de MálagaMálagaSpain
| | - María J. Torres
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
- Allergy UnitHospital Regional Universitario de MálagaMálagaSpain
- Departamento de MedicinaFacultad de MedicinaUniversidad de MálagaMálagaSpain
| | - María I. Montañez
- Andalusian Centre for Nanomedicine and Biotechnology‐BIONANDMálagaSpain
- Allergy Research GroupInstituto de Investigación Biomédica de Málaga‐IBIMAMálagaSpain
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Galli SJ, Gaudenzio N, Tsai M. Mast Cells in Inflammation and Disease: Recent Progress and Ongoing Concerns. Annu Rev Immunol 2021; 38:49-77. [PMID: 32340580 DOI: 10.1146/annurev-immunol-071719-094903] [Citation(s) in RCA: 168] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mast cells have existed long before the development of adaptive immunity, although they have been given different names. Thus, in the marine urochordate Styela plicata, they have been designated as test cells. However, based on their morphological characteristics (including prominent cytoplasmic granules) and mediator content (including heparin, histamine, and neutral proteases), test cells are thought to represent members of the lineage known in vertebrates as mast cells. So this lineage presumably had important functions that preceded the development of antibodies, including IgE. Yet mast cells are best known, in humans, as key sources of mediators responsible for acute allergic reactions, notably including anaphylaxis, a severe and potentially fatal IgE-dependent immediate hypersensitivity reaction to apparently harmless antigens, including many found in foods and medicines. In this review, we briefly describe the origins of tissue mast cells and outline evidence that these cells can have beneficial as well as detrimental functions, both innately and as participants in adaptive immune responses. We also discuss aspects of mast cell heterogeneity and comment on how the plasticity of this lineage may provide insight into its roles in health and disease. Finally, we consider some currently open questions that are yet unresolved.
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Affiliation(s)
- Stephen J Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA; , .,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California 94305, USA.,Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, California 94305, USA
| | - Nicolas Gaudenzio
- Unité de Différenciation Epithéliale et Autoimmunité Rhumatoïde (UDEAR), INSERM UMR 1056, Université de Toulouse, 31 059 Toulouse CEDEX 9, France;
| | - Mindy Tsai
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA; , .,Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, California 94305, USA
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Domagala M, Laplagne C, Leveque E, Laurent C, Fournié JJ, Espinosa E, Poupot M. Cancer Cells Resistance Shaping by Tumor Infiltrating Myeloid Cells. Cancers (Basel) 2021; 13:E165. [PMID: 33418996 PMCID: PMC7825276 DOI: 10.3390/cancers13020165] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/23/2020] [Accepted: 12/30/2020] [Indexed: 12/11/2022] Open
Abstract
Interactions between malignant cells and neighboring stromal and immune cells profoundly shape cancer progression. New forms of therapies targeting these cells have revolutionized the treatment of cancer. However, in order to specifically address each population, it was essential to identify and understand their individual roles in interaction between malignant cells, and the formation of the tumor microenvironment (TME). In this review, we focus on the myeloid cell compartment, a prominent, and heterogeneous group populating TME, which can initially exert an anti-tumoral effect, but with time actively participate in disease progression. Macrophages, dendritic cells, neutrophils, myeloid-derived suppressor cells, mast cells, eosinophils, and basophils act alone or in concert to shape tumor cells resistance through cellular interaction and/or release of soluble factors favoring survival, proliferation, and migration of tumor cells, but also immune-escape and therapy resistance.
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Affiliation(s)
- Marcin Domagala
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
| | - Chloé Laplagne
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
| | - Edouard Leveque
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
| | - Camille Laurent
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
- IUCT-O, 31000 Toulouse, France
| | - Jean-Jacques Fournié
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
| | - Eric Espinosa
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
| | - Mary Poupot
- Centre de Recherches en Cancérologie de Toulouse, Inserm UMR1037, 31037 Toulouse, France; (M.D.); (C.L.); (E.L.); (C.L.); (J.-J.F.); (E.E.)
- Université Toulouse III Paul-Sabatier, 31400 Toulouse, France
- ERL 5294 CNRS, 31037 Toulouse, France
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Marone G, Schroeder JT, Mattei F, Loffredo S, Gambardella AR, Poto R, de Paulis A, Schiavoni G, Varricchi G. Is There a Role for Basophils in Cancer? Front Immunol 2020; 11:2103. [PMID: 33013885 PMCID: PMC7505934 DOI: 10.3389/fimmu.2020.02103] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/03/2020] [Indexed: 12/11/2022] Open
Abstract
Basophils were identified in human peripheral blood by Paul Ehrlich over 140 years ago. Human basophils represent <1% of peripheral blood leukocytes. During the last decades, basophils have been described also in mice, guinea pigs, rabbits, and monkeys. There are many similarities, but also several immunological differences between human and mouse basophils. There are currently several strains of mice with profound constitutive or inducible basophil deficiency useful to prove that these cells have specific roles in vivo. However, none of these mice are solely and completely devoid of all basophils. Therefore, the relevance of these findings to humans remains to be established. It has been known for some time that basophils have the propensity to migrate into the site of inflammation. Recent observations indicate that tissue resident basophils contribute to lung development and locally promote M2 polarization of macrophages. Moreover, there is increasing evidence that lung-resident basophils exhibit a specific phenotype, different from circulating basophils. Activated human and mouse basophils synthesize restricted and distinct profiles of cytokines. Human basophils produce several canonical (e.g., VEGFs, angiopoietin 1) and non-canonical (i.e., cysteinyl leukotriene C4) angiogenic factors. Activated human and mouse basophils release extracellular DNA traps that may have multiple effects in cancer. Hyperresponsiveness of basophils has been demonstrated in patients with JAK2V617F-positive polycythemia vera. Basophils are present in the immune landscape of human lung adenocarcinoma and pancreatic cancer and can promote inflammation-driven skin tumor growth. The few studies conducted thus far using different models of basophil-deficient mice have provided informative results on the roles of these cells in tumorigenesis. Much more remains to be discovered before we unravel the hitherto mysterious roles of basophils in human and experimental cancers.
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Affiliation(s)
- Giancarlo Marone
- Section of Hygiene, Department of Public Health, University of Naples Federico II, Naples, Italy.,Azienda Ospedaliera Ospedali dei Colli, Monaldi Hospital Pharmacy, Naples, Italy
| | - John T Schroeder
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins Asthma and Allergy Center, Johns Hopkins University, Baltimore, MD, United States
| | - Fabrizio Mattei
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Stefania Loffredo
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,Institute of Experimental Endocrinology and Oncology "G. Salvatore", National Research Council (CNR), Naples, Italy
| | | | - Remo Poto
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - Amato de Paulis
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy
| | - Giovanna Schiavoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Gilda Varricchi
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,Institute of Experimental Endocrinology and Oncology "G. Salvatore", National Research Council (CNR), Naples, Italy
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11
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Kim JO, Kim HN, Kim KH, Baek EJ, Park JY, Ha K, Heo DR, Seo MD, Park SG. Development and characterization of a fully human antibody targeting SCF/c-kit signaling. Int J Biol Macromol 2020; 159:66-78. [PMID: 32437800 DOI: 10.1016/j.ijbiomac.2020.05.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/23/2022]
Abstract
CD117/c-kit, a tyrosine kinase receptor, plays a critical role in hematopoiesis, pigmentation, and fertility. The overexpression and activation of c-kit are thought to promote tumor growth and have been reported in various cancers, including leukemia, glioblastoma and mastocytosis. To disrupt the SCF/c-kit signaling axis in cancer, we generated a c-kit antagonist human antibody (NN2101) that binds to domain 2/3 of c-kit. This completely blocked the SCF-mediated phosphorylation of c-kit and inhibited TF-1 cell proliferation, erythroleukemia. In addition, the examination of binding affinity using surface plasmon resonance (SPR) assay showed that NN2101 can bind to c-kit of monkeys (KD = 2.92 × 10-10 M), rats (KD = 1.68 × 10-6 M), mice (KD = 11.5 × 10-9 M), and humans (KD = 2.83 × 10-12 M). We showed that NN2101 does not cause antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity. The immunogenicity of NN2101 was similar to that of bevacizumab. Furthermore, the crystal structure of NN2101 Fab was determined and the structure of NN2101 Fab:c-kit complex was modeled. Structural information, as well as mutagenesis results, revealed that NN2101 can bind to the SCF-binding regions of c-kit. Collectively, we generated a c-kit neutralizing human antibody (NN2101) for the treatment of erythroleukemia and characterized its biophysical properties. NN2101 can potentially be used as a therapeutic antibody to treat different cancers.
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Affiliation(s)
- Jin-Ock Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Ha-Neul Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea; Department of Molecular Science and Technology, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Kwang-Hyeok Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Eun Ji Baek
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Jeong-Yang Park
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea; Department of Molecular Science and Technology, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Kyungsoo Ha
- New Drug Development Center, Osong Medical Innovation Foundation, Osong 28160, Republic of Korea
| | - Deok Rim Heo
- New Drug Development Center, Osong Medical Innovation Foundation, Osong 28160, Republic of Korea; College of Pharmacy and Medical Research Center, Chungbuk National University, Osongsaengmyeong 1-ro, Osong 28160, Republic of Korea
| | - Min-Duk Seo
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea; Department of Molecular Science and Technology, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea; Novelty Nobility, 227 Unjung-ro, Seongnam-si, Gyeonggi-do 13477, Republic of Korea.
| | - Sang Gyu Park
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea; Novelty Nobility, 227 Unjung-ro, Seongnam-si, Gyeonggi-do 13477, Republic of Korea.
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12
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Ragipoglu D, Dudeck A, Haffner-Luntzer M, Voss M, Kroner J, Ignatius A, Fischer V. The Role of Mast Cells in Bone Metabolism and Bone Disorders. Front Immunol 2020; 11:163. [PMID: 32117297 PMCID: PMC7025484 DOI: 10.3389/fimmu.2020.00163] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 01/21/2020] [Indexed: 12/15/2022] Open
Abstract
Mast cells (MCs) are important sensor and effector cells of the immune system that are involved in many physiological and pathological conditions. Increasing evidence suggests that they also play an important role in bone metabolism and bone disorders. MCs are located in the bone marrow and secrete a wide spectrum of mediators, which can be rapidly released upon activation of mature MCs following their differentiation in mucosal or connective tissues. Many of these mediators can exert osteocatabolic effects by promoting osteoclast formation [e.g., histamine, tumor necrosis factor (TNF), interleukin-6 (IL-6)] and/or by inhibiting osteoblast activity (e.g., IL-1, TNF). By contrast, MCs could potentially act in an osteoprotective manner by stimulating osteoblasts (e.g., transforming growth factor-β) or reducing osteoclastogenesis (e.g., IL-12, interferon-γ). Experimental studies investigating MC functions in physiological bone turnover using MC-deficient mouse lines give contradictory results, reporting delayed or increased bone turnover or no influence depending on the mouse model used. By contrast, the involvement of MCs in various pathological conditions affecting bone is evident. MCs may contribute to the pathogenesis of primary and secondary osteoporosis as well as inflammatory disorders, including rheumatoid arthritis and osteoarthritis, because increased numbers of MCs were found in patients suffering from these diseases. The clinical observations could be largely confirmed in experimental studies using MC-deficient mouse models, which also provide mechanistic insights. MCs also regulate bone healing after fracture by influencing the inflammatory response toward the fracture, vascularization, bone formation, and callus remodeling by osteoclasts. This review summarizes the current view and understanding of the role of MCs on bone in both physiological and pathological conditions.
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Affiliation(s)
- Deniz Ragipoglu
- Trauma Research Center Ulm, Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Anne Dudeck
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Melanie Haffner-Luntzer
- Trauma Research Center Ulm, Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Martin Voss
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Jochen Kroner
- Trauma Research Center Ulm, Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Anita Ignatius
- Trauma Research Center Ulm, Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
| | - Verena Fischer
- Trauma Research Center Ulm, Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Ulm, Germany
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13
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Magrone T, Magrone M, Jirillo E. Mast Cells as a Double-Edged Sword in Immunity: Their Function in Health and Disease. First of Two Parts. Endocr Metab Immune Disord Drug Targets 2019; 20:654-669. [PMID: 31789135 DOI: 10.2174/1871530319666191202120301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/08/2019] [Accepted: 11/21/2019] [Indexed: 11/22/2022]
Abstract
Mast cells (MCs) have recently been re-interpreted in the context of the immune scenario in the sense that their pro-allergic role is no longer exclusive. In fact, MCs even in steady state conditions maintain homeostatic functions, producing mediators and intensively cross-talking with other immune cells. Here, emphasis will be placed on the array of receptors expressed by MCs and the variety of cytokines they produce. Then, the bulk of data discussed will provide readers with a wealth of information on the dual ability of MCs not only to defend but also to offend the host. This double attitude of MCs relies on many variables, such as their subsets, tissues of residency and type of stimuli ranging from microbes to allergens and food antigens. Finally, the relationship between MCs with basophils and eosinophils will be discussed.
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Affiliation(s)
- Thea Magrone
- Department of Basic Medical Sciences, Neuroscience and Sensory Organs, School of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Manrico Magrone
- Department of Basic Medical Sciences, Neuroscience and Sensory Organs, School of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Emilio Jirillo
- Department of Basic Medical Sciences, Neuroscience and Sensory Organs, School of Medicine, University of Bari "Aldo Moro", Bari, Italy
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14
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Strattan E, Palaniyandi S, Kumari R, Du J, Hakim N, Huang T, Kesler MV, Jennings CD, Sturgill JL, Hildebrandt GC. Mast Cells Are Mediators of Fibrosis and Effector Cell Recruitment in Dermal Chronic Graft-vs.-Host Disease. Front Immunol 2019; 10:2470. [PMID: 31681336 PMCID: PMC6813249 DOI: 10.3389/fimmu.2019.02470] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/03/2019] [Indexed: 12/15/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplant (allo-HSCT) is often used to treat acute leukemia or defects of hematopoiesis. Its widespread use is hampered by graft-vs.-host disease (GVHD), which has high morbidity and mortality in both acute and chronic subtypes. Chronic GVHD (cGVHD) occurs most frequently in skin and often is characterized by pathogenic fibrosis. Mast cells (MCs) are known to be involved in the pathogenesis of other fibrotic diseases. In a murine model of cGVHD after allo-HSCT, C57BL/6J recipients of allogeneic LP/J donor cells develop sclerodermatous dermal cGVHD which is significantly decreased in mast cell-deficient B6.Cg-KitW-sh/HNihrJaeBsmGlliJ recipients. The presence of MCs is associated with fibrosis, chemokine production, and recruitment of GVHD effector cells to the skin. Chemokine production by MCs is blocked by drugs used to treat cGVHD. The importance of MCs in skin cGVHD is mirrored by increased MCs in the skin of patients with dermal cGVHD. We show for the first time a role for MCs in skin cGVHD that may be targetable for preventive and therapeutic intervention in this disease.
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Affiliation(s)
- Ethan Strattan
- Division of Hematology and Blood & Marrow Transplant, Markey Cancer Center, University of Kentucky, Lexington, KY, United States.,Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY, United States
| | - Senthilnathan Palaniyandi
- Division of Hematology and Blood & Marrow Transplant, Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Reena Kumari
- Division of Hematology and Blood & Marrow Transplant, Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Jing Du
- Department of Pathology, University of Kentucky, Lexington, KY, United States
| | - Natalya Hakim
- Department of Pathology, University of Kentucky, Lexington, KY, United States
| | - Timothy Huang
- Division of Hematology and Blood & Marrow Transplant, Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Melissa V Kesler
- Department of Pathology, University of Kentucky, Lexington, KY, United States
| | - C Darrell Jennings
- Department of Pathology, University of Kentucky, Lexington, KY, United States
| | - Jamie L Sturgill
- Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY, United States.,Division of Pulmonary, Critical Care, and Sleep Medicine, University of Kentucky, Lexington, KY, United States
| | - Gerhard C Hildebrandt
- Division of Hematology and Blood & Marrow Transplant, Markey Cancer Center, University of Kentucky, Lexington, KY, United States.,Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY, United States
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15
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Żelechowska P, Agier J, Kozłowska E, Brzezińska-Błaszczyk E. Mast cells participate in chronic low-grade inflammation within adipose tissue. Obes Rev 2018; 19:686-697. [PMID: 29334696 DOI: 10.1111/obr.12670] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 11/29/2017] [Accepted: 12/15/2017] [Indexed: 12/26/2022]
Abstract
Obesity is reckoned as one of the civilization diseases, posing a considerable global health issue. Evidence points towards a contribution of multitude immune cell populations in obesity pathomechanism and the development of chronic low-grade inflammation in the expanded adipose tissue. Notably, adipose tissue is a reservoir of mast cells which number in individuals with obesity particularly increased. Some of them tend to degranulation what generate secretion of strong pro-inflammatory and regulatory mediators, as well as cytokines/chemokines. Several lines of evidence suggest that mast cells are strictly associated with pro-inflammatory status in adipose tissue by their indirect impact on immune cell attraction and activation. Furthermore, mast cells affect adipose tissue remodelling and fibrosis by adipocyte differentiation, fibroblast proliferation and enhancing extracellular matrix proteins expression. This review will summarize current knowledge on mast cell features and their role in the development of chronic low-grade inflammation within adipose tissue.
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Affiliation(s)
- P Żelechowska
- Department of Experimental Immunology, Medical University of Lodz, Lodz, Poland
| | - J Agier
- Department of Experimental Immunology, Medical University of Lodz, Lodz, Poland
| | - E Kozłowska
- Department of Experimental Immunology, Medical University of Lodz, Lodz, Poland
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16
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L'Italien L, Orozco O, Abrams T, Cantagallo L, Connor A, Desai J, Ebersbach H, Gelderblom H, Hoffmaster K, Lees E, Maacke H, Schleyer S, Skegro D, Lee-Hoeflich ST. Mechanistic Insights of an Immunological Adverse Event Induced by an Anti-KIT Antibody Drug Conjugate and Mitigation Strategies. Clin Cancer Res 2018; 24:3465-3474. [PMID: 29615457 DOI: 10.1158/1078-0432.ccr-17-3786] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/06/2018] [Accepted: 03/27/2018] [Indexed: 11/16/2022]
Abstract
Purpose: Hypersensitivity reactions (HSRs) were observed in three patients dosed in a phase I clinical trial treated with LOP628, a KIT targeted antibody drug conjugate. Mast cell degranulation was implicated as the root cause for the HSR. Underlying mechanism of this reported HSR was investigated with an aim to identifying potential mitigation strategies.Experimental Design: Biomarkers for mast cell degranulation were evaluated in patient samples and in human peripheral blood cell-derived mast cell (PBC-MC) cultures treated with LOP628. Mitigation strategies interrogated include pretreatment of mast cells with small molecule inhibitors that target KIT or signaling pathways downstream of FcεR1, FcγR, and treatment with Fc silencing antibody formats.Results: Transient elevation of serum tryptase was observed in patients 1-hour posttreatment of LOP628. In agreement with the clinical observation, LOP628 and its parental antibody LMJ729 induced degranulation of human PBC-MCs. Unexpectedly, KIT small molecule inhibitors did not abrogate mast cell degranulation. By contrast, small molecule inhibitors that targeted pathways downstream of Fc receptors blunted degranulation. Furthermore, interference of the KIT antibody to engage Fc receptors by pre-incubation with IgG or using engineered Fc silencing mutations reduced or prevented degranulation. Characterization of Fcγ receptors revealed human PBC-MCs expressed both FcγRII and low levels of FcγRI. Interestingly, increasing the level of FcγRI upon addition of IFNγ, significantly enhanced LOP628-mediated mast cell degranulation.Conclusions: Our data suggest LOP628-mediated mast cell degranulation is the likely cause of HSR observed in the clinic due to co-engagement of the FcγR and KIT, resulting in mast cell activation. Clin Cancer Res; 24(14); 3465-74. ©2018 AACR.
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Affiliation(s)
| | - Olivia Orozco
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Tinya Abrams
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Lisa Cantagallo
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Anu Connor
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Jayesh Desai
- Royal Melbourne Hospital, Parkville VIC, Australia
| | - Hilmar Ebersbach
- Novartis Institutes for Biomedical Research, Novartis Campus, Basel, Switzerland
| | | | - Keith Hoffmaster
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Emma Lees
- Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Heiko Maacke
- Novartis Institutes for Biomedical Research, Novartis Campus, Basel, Switzerland
| | - Siew Schleyer
- Novartis Institutes for Biomedical Research, Shanghai, China
| | - Darko Skegro
- Novartis Institutes for Biomedical Research, Novartis Campus, Basel, Switzerland
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17
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Redegeld FA, Yu Y, Kumari S, Charles N, Blank U. Non-IgE mediated mast cell activation. Immunol Rev 2018; 282:87-113. [DOI: 10.1111/imr.12629] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Frank A. Redegeld
- Division of Pharmacology; Utrecht Institute for Pharmaceutical Sciences; Utrecht University; Utrecht The Netherlands
| | - Yingxin Yu
- Division of Pharmacology; Utrecht Institute for Pharmaceutical Sciences; Utrecht University; Utrecht The Netherlands
| | - Sangeeta Kumari
- Division of Pharmacology; Utrecht Institute for Pharmaceutical Sciences; Utrecht University; Utrecht The Netherlands
| | - Nicolas Charles
- INSERM U1149; Centre de Recherche sur l'Inflammation; Paris France
- CNRS ERL8252; Paris France
- Université Paris-Diderot; Sorbonne Paris Cité; Faculté de Médecine; Site Xavier Bichat; Paris France
| | - Ulrich Blank
- INSERM U1149; Centre de Recherche sur l'Inflammation; Paris France
- CNRS ERL8252; Paris France
- Université Paris-Diderot; Sorbonne Paris Cité; Faculté de Médecine; Site Xavier Bichat; Paris France
- Inflamex Laboratory of Excellence; Paris France
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18
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Albanesi M, Nico A, Sinisi A, Giliberti L, Rossi MP, Rossini M, Kourtis G, Rucco AS, Loconte F, Muolo L, Zurlo M, Di Bona D, Caiaffa MF, Macchia L. A 13-year real-life study on efficacy, safety and biological effects of Vespula venom immunotherapy. Clin Mol Allergy 2018; 16:2. [PMID: 29375272 PMCID: PMC5774115 DOI: 10.1186/s12948-017-0079-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 12/18/2017] [Indexed: 11/10/2022] Open
Abstract
Background Hymenoptera venom immunotherapy (VIT) is a clinically effective treatment. However, little is known about its long-term clinical efficacy and biological effects. Several mechanisms have been proposed to account for VIT efficacy, including reduction of specific IgE and induction of allergen-specific IgG4, but the overall picture remains elusive. We investigated Vespula VIT clinical efficacy up to 8 years after discontinuation and the kinetics of Vespula-specific IgE and IgG4. Out of 686 consecutive patients we retrospectively selected and analysed a series of 23 patients with Vespula allergy that underwent a 5-year IT course, followed by a prolonged follow-up. Methods Clinical efficacy of VIT was assessed as number and severity of reactions to Vespula re-stinging events. The presence of Vespula-specific IgE and IgG4 was also monitored over time. Results During the VIT treatment, patients were protected, reporting no reactions or mild reactions in occasion of re-stinging events. This protection was entirely maintained during the follow-up, up to 8 years. Skin reactivity (reflecting mast cell-bound Vespula-specific IgE) and circulating Vespula-specific IgE levels declined substantially during VIT. Notably, this reduction was maintained over time during the follow-up. Moreover, all the patients were analysed for IgG4. A robust induction of Vespula-specific IgG4 was observed during the VIT course, with a substantial decline during the follow-up. Conclusions We conclude that Vespula VIT is a clinically effective treatment, which induces long-term protection after discontinuation. The reduction of specific IgE, assessed by skin tests and RAST, closely matches the VIT- induced protection, while the IgG4 induction seems not to be associated with VIT clinical efficacy in the long term. Electronic supplementary material The online version of this article (10.1186/s12948-017-0079-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marcello Albanesi
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Andrea Nico
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Alessandro Sinisi
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Lucia Giliberti
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Maria Pia Rossi
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Margherita Rossini
- Unit of Clinical Pathology, Policlinico di Bari, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Georgios Kourtis
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Anna Simona Rucco
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Filomena Loconte
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Loredana Muolo
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Marco Zurlo
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Danilo Di Bona
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
| | - Maria Filomena Caiaffa
- 3School and Chair of Allergology and Clinical Immunology, Department of Medical and Surgical Sciences, University of Foggia, Via Luigi Pinto 1, 70100 Foggia, Italy
| | - Luigi Macchia
- 1School and Chair of Allergology and Clinical Immunology, Department of Emergency and Organ Transplantation, University of Bari-Aldo Moro, Piazza Giulio Cesare 13, Policlinico, 70124 Bari, Italy
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19
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Lu LL, Suscovich TJ, Fortune SM, Alter G. Beyond binding: antibody effector functions in infectious diseases. Nat Rev Immunol 2018; 18:46-61. [PMID: 29063907 PMCID: PMC6369690 DOI: 10.1038/nri.2017.106] [Citation(s) in RCA: 441] [Impact Index Per Article: 73.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Antibodies play an essential role in host defence against pathogens by recognizing microorganisms or infected cells. Although preventing pathogen entry is one potential mechanism of protection, antibodies can control and eradicate infections through a variety of other mechanisms. In addition to binding and directly neutralizing pathogens, antibodies drive the clearance of bacteria, viruses, fungi and parasites via their interaction with the innate and adaptive immune systems, leveraging a remarkable diversity of antimicrobial processes locked within our immune system. Specifically, antibodies collaboratively form immune complexes that drive sequestration and uptake of pathogens, clear toxins, eliminate infected cells, increase antigen presentation and regulate inflammation. The diverse effector functions that are deployed by antibodies are dynamically regulated via differential modification of the antibody constant domain, which provides specific instructions to the immune system. Here, we review mechanisms by which antibody effector functions contribute to the balance between microbial clearance and pathology and discuss tractable lessons that may guide rational vaccine and therapeutic design to target gaps in our infectious disease armamentarium.
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Affiliation(s)
- Lenette L Lu
- Ragon Institute of MGH, MIT and Harvard, 400 Technology Square, Cambridge, Massachusetts 02139, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Todd J Suscovich
- Ragon Institute of MGH, MIT and Harvard, 400 Technology Square, Cambridge, Massachusetts 02139, USA
| | - Sarah M Fortune
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, 400 Technology Square, Cambridge, Massachusetts 02139, USA
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20
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He W, Chen CJ, Mullarkey CE, Hamilton JR, Wong CK, Leon PE, Uccellini MB, Chromikova V, Henry C, Hoffman KW, Lim JK, Wilson PC, Miller MS, Krammer F, Palese P, Tan GS. Alveolar macrophages are critical for broadly-reactive antibody-mediated protection against influenza A virus in mice. Nat Commun 2017; 8:846. [PMID: 29018261 PMCID: PMC5635038 DOI: 10.1038/s41467-017-00928-3] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 08/07/2017] [Indexed: 12/23/2022] Open
Abstract
The aim of candidate universal influenza vaccines is to provide broad protection against influenza A and B viruses. Studies have demonstrated that broadly reactive antibodies require Fc-Fc gamma receptor interactions for optimal protection; however, the innate effector cells responsible for mediating this protection remain largely unknown. Here, we examine the roles of alveolar macrophages, natural killer cells, and neutrophils in antibody-mediated protection. We demonstrate that alveolar macrophages play a dominant role in conferring protection provided by both broadly neutralizing and non-neutralizing antibodies in mice. Our data also reveal the potential mechanisms by which alveolar macrophages mediate protection in vivo, namely antibody-induced inflammation and antibody-dependent cellular phagocytosis. This study highlights the importance of innate effector cells in establishing a broad-spectrum antiviral state, as well as providing a better understanding of how multiple arms of the immune system cooperate to achieve an optimal antiviral response following influenza virus infection or immunization.Broadly reactive antibodies that recognize influenza A virus HA can be protective, but the mechanism is not completely understood. Here, He et al. show that the inflammatory response and phagocytosis mediated by the interaction between protective antibodies and macrophages are essential for protection.
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Affiliation(s)
- Wenqian He
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Chi-Jene Chen
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Caitlin E Mullarkey
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jennifer R Hamilton
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Christine K Wong
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Paul E Leon
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Melissa B Uccellini
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Veronika Chromikova
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Carole Henry
- Department of Medicine, Section of Rheumatology, The Knapp Center for Lupus and Immunology Research, The Committee on Immunology, The University of Chicago, Chicago, IL, 60637, USA
| | - Kevin W Hoffman
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jean K Lim
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Patrick C Wilson
- Department of Medicine, Section of Rheumatology, The Knapp Center for Lupus and Immunology Research, The Committee on Immunology, The University of Chicago, Chicago, IL, 60637, USA
| | - Matthew S Miller
- Department of Biochemistry and Biomedical Sciences, Institute of Infectious Diseases Research, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada, L8S 4K1
| | - Florian Krammer
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Peter Palese
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Gene S Tan
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
- J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA.
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21
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Hikosaka M, Murata A, Yoshino M, Hayashi SI. Correlation between cell aggregation and antibody production in IgE-producing plasma cells. Biochem Biophys Rep 2017; 10:224-231. [PMID: 28955750 PMCID: PMC5614669 DOI: 10.1016/j.bbrep.2017.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/01/2017] [Accepted: 04/18/2017] [Indexed: 01/18/2023] Open
Abstract
Allergic conditions result in the increase of immunoglobulin (Ig)E-producing plasma cells (IgE-PCs); however, it is unclear how IgE production is qualitatively controlled. In this study, we found that IgE-PCs in spleen of immunized mice formed homotypic cell aggregates. By employing IgE-producing hybridomas (IgE-hybridomas) as a model of IgE-PCs, we showed that these cells formed aggregates in the presence of specific antigens (Ags). The formation of the Ag-induced cell aggregation involved secreted IgE and Fcγ receptor (FcγR)II/FcγRIII, but not FcεRs. Ag-induced cell aggregation plus lipopolysaccharide signaling resulted in an enhancement of IgE production in aggregated IgE-hybridomas. Furthermore, the administration of anti-FcγRII/FcγRIII antagonistic monoclonal antibody to immunized mice tended to reduce the splenic IgE-PC aggregation as well as the serum IgE levels. Taken together, our results suggested that Ag-IgE complexes induced IgE-PCs aggregation via FcγRII/FcγRIII, leading to the enhancement of IgE production. These findings suggest the presence of a novel mechanism for regulation of IgE production.
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Affiliation(s)
- Mari Hikosaka
- Division of Immunology, Department of Molecular and Cellular Biology, School of Life Science, Faculty of Medicine, Tottori University, 86 Nishi-Cho, Yonago, Tottori 683-8503, Japan
| | - Akihiko Murata
- Division of Immunology, Department of Molecular and Cellular Biology, School of Life Science, Faculty of Medicine, Tottori University, 86 Nishi-Cho, Yonago, Tottori 683-8503, Japan
| | - Miya Yoshino
- Division of Immunology, Department of Molecular and Cellular Biology, School of Life Science, Faculty of Medicine, Tottori University, 86 Nishi-Cho, Yonago, Tottori 683-8503, Japan
| | - Shin-Ichi Hayashi
- Division of Immunology, Department of Molecular and Cellular Biology, School of Life Science, Faculty of Medicine, Tottori University, 86 Nishi-Cho, Yonago, Tottori 683-8503, Japan
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22
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Muñoz-Cano R, Pascal M, Araujo G, Goikoetxea MJ, Valero AL, Picado C, Bartra J. Mechanisms, Cofactors, and Augmenting Factors Involved in Anaphylaxis. Front Immunol 2017; 8:1193. [PMID: 29018449 PMCID: PMC5623009 DOI: 10.3389/fimmu.2017.01193] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/08/2017] [Indexed: 01/12/2023] Open
Abstract
Anaphylaxis is an acute and life-threatening systemic reaction. Many triggers have been described, including food, drug, and hymenoptera allergens, which are the most frequently involved. The mechanisms described in anaphylactic reactions are complex and implicate a diversity of pathways. Some of these mechanisms may be key to the development of the anaphylactic reaction, while others may only modify its severity. Although specific IgE, mast cells, and basophils are considered the principal players in anaphylaxis, alternative mechanisms have been proposed in non-IgE anaphylactic reactions. Neutrophils, macrophages, as well as basophils, have been involved, as have IgG-dependent, complement and contact system activation. A range of cationic substances can induce antibody-independent mast cells activation through MRGPRX2 receptor. Cofactors and augmenting factors may explain why, in some patients, food allergen exposure can cause anaphylaxis, while in other clinical scenario it can be tolerated or elicits a mild reaction. With the influence of these factors, food allergic reactions may be induced at lower doses of allergen and/or become more severe. Exercise, alcohol, estrogens, and some drugs such as Non-steroidal anti-inflammatory drugs, angiotensin-converting enzyme inhibitors, β-blockers, and lipid-lowering drugs are the main factors described, though their mechanisms and signaling pathways are poorly understood.
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Affiliation(s)
- Rosa Muñoz-Cano
- Unitat d'Allergia, Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Mariona Pascal
- Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Servei d'Immunologia, Centre de Diagnòstic Biomèdic (CDB), Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Giovanna Araujo
- Unitat d'Allergia, Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - M J Goikoetxea
- Allergy and Immunology Department, Universidad de Navarra, Navarra, Spain
| | - Antonio L Valero
- Unitat d'Allergia, Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Cesar Picado
- Unitat d'Allergia, Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Joan Bartra
- Unitat d'Allergia, Servei de Pneumologia, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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23
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Thomson J, Hargrove L, Kennedy L, Demieville J, Francis H. Cellular crosstalk during cholestatic liver injury. LIVER RESEARCH 2017; 1:26-33. [PMID: 29552372 PMCID: PMC5854144 DOI: 10.1016/j.livres.2017.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The functions of the liver are very diverse. From detoxifying blood to storing glucose in the form of glycogen and producing bile to facilitate fat digestion, the liver is a very active and important organ. The liver is comprised of many varied cell types whose functions are equally diverse. Cholangiocytes line the biliary tree and aid in transporting and adjusting the composition of bile as it travels to the gallbladder. Hepatic stellate cells and portal fibroblasts are located in different areas within the liver architecture, but both contribute to the development of fibrosis upon activation after liver injury. Vascular cells, including those that constitute the peribiliary vascular plexus, are involved in functions other than blood delivery to and from the liver, such as supporting the growth of the biliary tree during development. Mast cells are normally found in healthy livers but in very low numbers. However, after injury, mast cell numbers greatly increase as they infiltrate and release factors that exacerbate the fibrotic response. While not an all-inclusive list, these cells have individual roles within the liver, but they are also able to communicate with each other by cellular crosstalk. In this review, we examine some of these pathways that can lead to an increase in the homeostatic dysfunction seen in liver injury.
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Affiliation(s)
- Joanne Thomson
- Research, Central Texas Veterans Healthcare System, TX, USA
| | - Laura Hargrove
- Medicine, Texas A&M Health Science Center, Temple, TX, USA
| | - Lindsey Kennedy
- Research, Central Texas Veterans Healthcare System, TX, USA
- Medicine, Texas A&M Health Science Center, Temple, TX, USA
| | | | - Heather Francis
- Research, Central Texas Veterans Healthcare System, TX, USA
- Digestive Disease Research Center, Baylor Scott & White Health, TX, USA
- Medicine, Texas A&M Health Science Center, Temple, TX, USA
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24
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Mucosal mast cells are indispensable for the timely termination of Strongyloides ratti infection. Mucosal Immunol 2017; 10:481-492. [PMID: 27381924 DOI: 10.1038/mi.2016.56] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 05/25/2016] [Indexed: 02/04/2023]
Abstract
Mast cells and basophils are innate immune cells with overlapping functions that contribute to anti-helminth immunity. Mast cell function during helminth infection was previously studied using mast cell-deficient Kit-mutant mice that display additional mast cell-unrelated immune deficiencies. Here, we use mice that lack basophils or mucosal and connective tissue mast cells in a Kit-independent manner to re-evaluate the impact of each cell type during helminth infection. Neither mast cells nor basophils participated in the immune response to tissue-migrating Strongyloides ratti third-stage larvae, but both cell types contributed to the early expulsion of parasitic adults from the intestine. The termination of S. ratti infection required the presence of mucosal mast cells: Cpa3Cre mice, which lack mucosal and connective tissue mast cells, remained infected for more than 150 days. Mcpt5Cre R-DTA mice, which lack connective tissue mast cells only, and basophil-deficient Mcpt8Cre mice terminated the infection after 1 month with wild-type kinetics despite their initial increase in intestinal parasite burden. Because Cpa3Cre mice showed intact Th2 polarization and efficiently developed protective immunity after vaccination, we hypothesize that mucosal mast cells are non-redundant terminal effector cells in the intestinal epithelium that execute anti-helminth immunity but do not orchestrate it.
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25
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Klein O, Ngo-Nyekel F, Stefanache T, Torres R, Salomonsson M, Hallgren J, Rådinger M, Bambouskova M, Campbell M, Cohen-Mor S, Dema B, Rose CG, Abrink M, Charles N, Ainooson G, Paivandy A, Pavlova VG, Serrano-Candelas E, Yu Y, Hellman L, Jensen BM, Van Anrooij B, Grootens J, Gura HK, Stylianou M, Tobio A, Blank U, Öhrvik H, Maurer M. Identification of Biological and Pharmaceutical Mast Cell- and Basophil-Related Targets. Scand J Immunol 2017; 83:465-72. [PMID: 27028428 DOI: 10.1111/sji.12436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 03/27/2016] [Indexed: 01/09/2023]
Affiliation(s)
- O Klein
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - F Ngo-Nyekel
- Inserm UMRS-1149, Paris, France.,CNRS ERL 8252, Paris, France.,Sorbonne Paris Cite, Laboratoire d'excellence INFLAMEX, Université Paris Diderot, Paris, France
| | - T Stefanache
- Department of Periodontology, University of Medicine and Pharmacy 'Gr. T. Popa', Iasi, Romania
| | - R Torres
- Safety and Sustainability Division, Leitat Technological Center, Barcelona, Spain
| | - M Salomonsson
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - J Hallgren
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - M Rådinger
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - M Bambouskova
- Department of Signal Transduction, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - M Campbell
- Institute of Inflammation and Repair and MCCIR, University of Manchester, Manchester, UK
| | - S Cohen-Mor
- The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - B Dema
- Inserm UMRS-1149, Paris, France.,CNRS ERL 8252, Paris, France.,Sorbonne Paris Cite, Laboratoire d'excellence INFLAMEX, Université Paris Diderot, Paris, France
| | - C G Rose
- Bioengineering, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK.,Immunopharmacology Group, Clinical Experimental Sciences, Faculty of Medicine, Southampton General Hospital, University of Southampton, Southampton, UK
| | - M Abrink
- Section of Immunology, Department of Biomedical Sciences and Veterinary Public Health, VHC, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - N Charles
- Inserm UMRS-1149, Paris, France.,CNRS ERL 8252, Paris, France.,Sorbonne Paris Cite, Laboratoire d'excellence INFLAMEX, Université Paris Diderot, Paris, France
| | - G Ainooson
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - A Paivandy
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - V G Pavlova
- Department of Experimental Morphology, Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - E Serrano-Candelas
- Biochemistry Unit, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Y Yu
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, the Netherlands
| | - L Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - B M Jensen
- Allergy Clinic, Copenhagen University Hospital - Gentofte Hospital, Hellerup, Denmark
| | - B Van Anrooij
- Department of Allergology, Groningen Research Institute of Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - J Grootens
- Clinical Immunology and Allergy Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - H K Gura
- Department of Respiratory Diseases and Allergy, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - M Stylianou
- Antifungal Immunity Group, Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - A Tobio
- Inserm UMRS-1149, Paris, France.,CNRS ERL 8252, Paris, France.,Sorbonne Paris Cite, Laboratoire d'excellence INFLAMEX, Université Paris Diderot, Paris, France
| | - U Blank
- Inserm UMRS-1149, Paris, France.,CNRS ERL 8252, Paris, France.,Sorbonne Paris Cite, Laboratoire d'excellence INFLAMEX, Université Paris Diderot, Paris, France
| | - H Öhrvik
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - M Maurer
- Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité -Universitätsmedizin, Berlin, Germany
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26
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Abstract
Mast cells are key effector cells in inflammation that can be activated by specific antigens via IgE or IgG binding on their FcR. Aggregation of mast cell Fc receptors by cell-bound antigens induces mast cell polarized degranulation toward the stimulatory cell, a process named antibody-dependent degranulatory synapse (ADDS). This polarized degranulation allows mast cells to expose bioactive material embedded in the granule matrix toward the antibody-targeted cell and is accompanied by the formation of a signaling area at the cell-cell contact site. In this chapter, we describe (1) how to stimulate mast cells with cell-bound antigens and (2) how to monitor ADDS formation and to investigate ADDS characteristics by confocal microscopy.
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27
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Watanabe N, Bajgain P, Sukumaran S, Ansari S, Heslop HE, Rooney CM, Brenner MK, Leen AM, Vera JF. Fine-tuning the CAR spacer improves T-cell potency. Oncoimmunology 2016; 5:e1253656. [PMID: 28180032 DOI: 10.1080/2162402x.2016.1253656] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 10/20/2016] [Accepted: 10/22/2016] [Indexed: 10/20/2022] Open
Abstract
The adoptive transfer of genetically engineered T cells expressing chimeric antigen receptors (CARs) has emerged as a transformative cancer therapy with curative potential, precipitating a wave of preclinical and clinical studies in academic centers and the private sector. Indeed, significant effort has been devoted to improving clinical benefit by incorporating accessory genes/CAR endodomains designed to enhance cellular migration, promote in vivo expansion/persistence or enhance safety by genetic programming to enable the recognition of a tumor signature. However, our efforts centered on exploring whether CAR T-cell potency could be enhanced by modifying pre-existing CAR components. We now demonstrate how molecular refinements to the CAR spacer can impact multiple biological processes including tonic signaling, cell aging, tumor localization, and antigen recognition, culminating in superior in vivo antitumor activity.
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Affiliation(s)
- Norihiro Watanabe
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Pradip Bajgain
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Sujita Sukumaran
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Salma Ansari
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Helen E Heslop
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Cliona M Rooney
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Malcolm K Brenner
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Ann M Leen
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
| | - Juan F Vera
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, and Houston Methodist Hospital , Houston, Texas, USA
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28
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Hong JY, Bae JH, Lee KE, Kim M, Kim MH, Kang HJ, Park EH, Yoo KS, Jeong SK, Kim KW, Kim KE, Sohn MH. Antibody to FcεRIα Suppresses Immunoglobulin E Binding to High-Affinity Receptor I in Allergic Inflammation. Yonsei Med J 2016; 57:1412-9. [PMID: 27593869 PMCID: PMC5011273 DOI: 10.3349/ymj.2016.57.6.1412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 03/21/2016] [Accepted: 03/24/2016] [Indexed: 11/27/2022] Open
Abstract
PURPOSE High-affinity receptor I (FcεRI) on mast cells and basophils plays a key role in the immunoglobulin E (IgE)-mediated type I hypersensitivity mediated by allergen cross-linking of the specific IgE-FcεRI complex. Thus, prevention of IgE binding to FcεRI on these cells is an effective therapy for allergic disease. We have developed a strategy to disrupt IgE binding to FcεRI using an antibody targeting FcεRIα. MATERIALS AND METHODS Fab fragment antibodies, which lack the Fc domain, with high affinity and specificity for FcεRIα and effective inhibitory activity against IgE-FcεRI binding were screened. IgE-induced histamine, β-hexosaminidase and Ca²⁺ release in basophils were determined by ELISA. A B6.Cg-Fcer1a(tm1Knt) Tg(FCER1A)1Bhk/J mouse model of passive cutaneous anaphylaxis (PCA) was used to examine the inhibitory effect of NPB311 on allergic skin inflammation. RESULTS NPB311 exhibited high affinity to human FcεRIα (KD=4 nM) and inhibited histamine, β-hexosaminidase and Ca²⁺ release in a concentration-dependent manner in hFcεRI-expressing cells. In hFcεRIα-expressing mice, dye leakage was higher in the PCA group than in controls, but decreased after NPB311 treatment. NPB311 could form a complex with FcεRIα and inhibit the release of inflammation mediators. CONCLUSION Our approach for producing anti-FcεRIα Fab fragment antibody NPB311 may enable clinical application to a therapeutic pathway in IgE/FcεRI-mediated diseases.
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Affiliation(s)
- Jung Yeon Hong
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | | | - Kyung Eun Lee
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Mina Kim
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Min Hee Kim
- CRID Center, NeoPharm Co., Ltd., Daejeon, Korea
| | | | | | | | | | - Kyung Won Kim
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Kyu Earn Kim
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Myung Hyun Sohn
- Department of Pediatrics and Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.
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29
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Abstract
IgG4, the least represented human IgG subclass in serum, is an intriguing antibody with unique biological properties, such as the ability to undergo Fab-arm exchange and limit immune complex formation. The lack of effector functions, such as antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity, is desirable for therapeutic purposes. IgG4 plays a protective role in allergy by acting as a blocking antibody, and inhibiting mast cell degranulation, but a deleterious role in malignant melanoma, by impeding IgG1-mediated anti-tumor immunity. These findings highlight the importance of understanding the interaction between IgG4 and Fcγ receptors. Despite a wealth of structural information for the IgG1 subclass, including complexes with Fcγ receptors, and structures for intact antibodies, high-resolution crystal structures were not reported for IgG4-Fc until recently. Here, we highlight some of the biological properties of human IgG4, and review the recent crystal structures of IgG4-Fc. We discuss the unexpected conformations adopted by functionally important Cγ2 domain loops, and speculate about potential implications for the interaction between IgG4 and FcγRs.
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Affiliation(s)
- Anna M Davies
- Randall Division of Cell and Molecular Biophysics, King's College London, London, UK.,Medical Research Council & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
| | - Brian J Sutton
- Randall Division of Cell and Molecular Biophysics, King's College London, London, UK.,Medical Research Council & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
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30
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Sarlus H, Eyjolfsdottir H, Eriksdotter M, Oprica M, Schultzberg M. Influence of Allergy on Immunoglobulins and Amyloid-β in the Cerebrospinal Fluid of Patients with Alzheimer's Disease. J Alzheimers Dis 2016; 48:495-505. [PMID: 26402013 DOI: 10.3233/jad-143147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Peripheral inflammation has been suggested to influence the development of Alzheimer's disease (AD). Elevated levels of pro-inflammatory markers in the plasma of patients with AD indicate that a systemic pro-inflammatory status occurs concomitantly with inflammatory changes in the brain. OBJECTIVE To investigate whether allergy influences the levels of immunoglobulins (Ig) and of pro- and anti-inflammatory cytokines in the serum and cerebrospinal fluid (CSF) from patients with AD, mild cognitive impairment (MCI), and subjective cognitive impairment (SCI). METHODS IgA, IgG, and its subclasses, IgM, and cytokines were analyzed in CSF and serum from patients with SCI, MCI, and AD, with or without allergy. The relation between allergy and Mini-Mental State Examination (MMSE) scores, and between allergy and CSF biomarkers for AD (phosphorylated (p)-tau, total (t)-tau, amyloid-β 42 (Aβ₄₂), were analyzed. RESULTS In MCI, the CSF levels of IgG2 were lower in allergic patients, and in AD, the levels of IgA and the IgG1/total IgG ratio were lower in allergic patients, compared to patients without allergy. MCI subjects with allergy had higher serum IgM levels compared to those without allergy. CSF levels of Aβ₄₂ were lower and MMSE scores were higher in AD patients with allergy than in those without allergy. CONCLUSIONS The presence of allergy was associated with seemingly beneficial effects on AD as suggested by higher Aβ₄₂ levels in CSF, and higher MMSE scores. Higher IgM levels and lower other Ig classes suggest that allergy may influence senescence of the immune response.
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Affiliation(s)
- Heela Sarlus
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer research, Section for Neurodegeneration, Novum, Huddinge, Sweden
| | - Helga Eyjolfsdottir
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer research, Section for Clinical Geriatrics, Novum, Huddinge, Sweden.,Department of Geriatric Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Maria Eriksdotter
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer research, Section for Clinical Geriatrics, Novum, Huddinge, Sweden.,Department of Geriatric Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Mircea Oprica
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer research, Section for Neurodegeneration, Novum, Huddinge, Sweden.,Department of Neurology, Karolinska University Hospital, Stockholm, Sweden
| | - Marianne Schultzberg
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer research, Section for Neurodegeneration, Novum, Huddinge, Sweden
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Beutier H, Gillis CM, Iannascoli B, Godon O, England P, Sibilano R, Reber LL, Galli SJ, Cragg MS, Van Rooijen N, Mancardi DA, Bruhns P, Jönsson F. IgG subclasses determine pathways of anaphylaxis in mice. J Allergy Clin Immunol 2016; 139:269-280.e7. [PMID: 27246523 DOI: 10.1016/j.jaci.2016.03.028] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 01/29/2016] [Accepted: 03/03/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Animal models have demonstrated that allergen-specific IgG confers sensitivity to systemic anaphylaxis that relies on IgG Fc receptors (FcγRs). Mouse IgG2a and IgG2b bind activating FcγRI, FcγRIII, and FcγRIV and inhibitory FcγRIIB; mouse IgG1 binds only FcγRIII and FcγRIIB. Although these interactions are of strikingly different affinities, these 3 IgG subclasses have been shown to enable induction of systemic anaphylaxis. OBJECTIVE We sought to determine which pathways control the induction of IgG1-, IgG2a-, and IgG2b-dependent passive systemic anaphylaxis. METHODS Mice were sensitized with IgG1, IgG2a, or IgG2b anti-trinitrophenyl mAbs and challenged with trinitrophenyl-BSA intravenously to induce systemic anaphylaxis that was monitored by using rectal temperature. Anaphylaxis was evaluated in mice deficient for FcγRs injected with mediator antagonists or in which basophils, monocytes/macrophages, or neutrophils had been depleted. FcγR expression was evaluated on these cells before and after anaphylaxis. RESULTS Activating FcγRIII is the receptor primarily responsible for all 3 models of anaphylaxis, and subsequent downregulation of this receptor was observed. These models differentially relied on histamine release and the contribution of mast cells, basophils, macrophages, and neutrophils. Strikingly, basophil contribution and histamine predominance in mice with IgG1- and IgG2b-induced anaphylaxis correlated with the ability of inhibitory FcγRIIB to negatively regulate these models of anaphylaxis. CONCLUSION We propose that the differential expression of inhibitory FcγRIIB on myeloid cells and its differential binding of IgG subclasses controls the contributions of mast cells, basophils, neutrophils, and macrophages to IgG subclass-dependent anaphylaxis. Collectively, our results unravel novel complexities in the involvement and regulation of cell populations in IgG-dependent reactions in vivo.
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Affiliation(s)
- Héloïse Beutier
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France; Université Pierre et Marie Curie, Paris, France
| | - Caitlin M Gillis
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France; Université Pierre et Marie Curie, Paris, France
| | - Bruno Iannascoli
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France
| | - Ophélie Godon
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France
| | - Patrick England
- Institut Pasteur, Plate-Forme de Biophysique Moléculaire, Centre d'Innovation et Recherche Technologique (CiTech), CNRS-UMR3528, Paris, France
| | - Riccardo Sibilano
- Department of Pathology, Stanford University School of Medicine, Stanford, Calif; Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, Calif
| | - Laurent L Reber
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France
| | - Stephen J Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, Calif; Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, Calif
| | - Mark S Cragg
- Antibody and Vaccine Group, Cancer Sciences Unit, University of Southampton Faculty of Medicine, Southampton General Hospital, Southampton, United Kingdom
| | - Nico Van Rooijen
- Department of Molecular Cell Biology, VU Medical Center, Amsterdam, The Netherlands
| | - David A Mancardi
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France
| | - Pierre Bruhns
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France.
| | - Friederike Jönsson
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, Institut Pasteur, Paris, France; INSERM, U1222, Paris, France.
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32
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Wes PD, Sayed FA, Bard F, Gan L. Targeting microglia for the treatment of Alzheimer's Disease. Glia 2016; 64:1710-32. [DOI: 10.1002/glia.22988] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Paul D. Wes
- Neuroinflammation Department; Lundbeck Research USA; Paramus New Jersey
| | - Faten A. Sayed
- Gladstone Institute for Neurodegeneration; San Francisco California
| | | | - Li Gan
- Gladstone Institute for Neurodegeneration; San Francisco California
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Daëron M. Innate myeloid cells under the control of adaptive immunity: the example of mast cells and basophils. Curr Opin Immunol 2015; 38:101-8. [PMID: 26745401 DOI: 10.1016/j.coi.2015.12.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/09/2015] [Accepted: 12/10/2015] [Indexed: 01/13/2023]
Abstract
Mast cells and basophils are mostly known as the initiators of IgE-dependent allergic reactions. They, however, contribute to innate immunity against pathogens and venoms. Like other myeloid cells, they also express receptors for the Fc portion of IgG antibodies. These include activating receptors and inhibitory receptors. Because IgG antibodies are produced in exceedingly higher amounts than IgE antibodies, IgG receptors are co-engaged with IgE receptors under physiological conditions. Mast cells and basophils are examples of the many innate myeloid cells whose effector functions are used and finely tuned by antibodies. They can be thus enrolled in a variety of adaptive immune responses, their activation can be regulated, positively and negatively and their biological responses can be modulated qualitatively by antibodies.
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Affiliation(s)
- Marc Daëron
- Institut Pasteur, 25 rue du Docteur Roux, 75015 Paris, France; Centre d'immunologie de Marseille-Luminy, Université Aix Marseille UM2, Inserm U1104, CNRS UMR7280, 13288 Marseille, France.
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Mora-Bau G, Platt AM, van Rooijen N, Randolph GJ, Albert ML, Ingersoll MA. Macrophages Subvert Adaptive Immunity to Urinary Tract Infection. PLoS Pathog 2015; 11:e1005044. [PMID: 26182347 PMCID: PMC4504509 DOI: 10.1371/journal.ppat.1005044] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 06/23/2015] [Indexed: 12/24/2022] Open
Abstract
Urinary tract infection (UTI) is one of the most common bacterial infections with frequent recurrence being a major medical challenge. Development of effective therapies has been impeded by the lack of knowledge of events leading to adaptive immunity. Here, we establish conclusive evidence that an adaptive immune response is generated during UTI, yet this response does not establish sterilizing immunity. To investigate the underlying deficiency, we delineated the naïve bladder immune cell compartment, identifying resident macrophages as the most populous immune cell. To evaluate their impact on the establishment of adaptive immune responses following infection, we measured bacterial clearance in mice depleted of either circulating monocytes, which give rise to macrophages, or bladder resident macrophages. Surprisingly, mice depleted of resident macrophages, prior to primary infection, exhibited a nearly 2-log reduction in bacterial burden following secondary challenge compared to untreated animals. This increased bacterial clearance, in the context of a challenge infection, was dependent on lymphocytes. Macrophages were the predominant antigen presenting cell to acquire bacteria post-infection and in their absence, bacterial uptake by dendritic cells was increased almost 2-fold. These data suggest that bacterial uptake by tissue macrophages impedes development of adaptive immune responses during UTI, revealing a novel target for enhancing host responses to bacterial infection of the bladder. Urinary tract infection is a common infection with a high propensity for recurrence. The majority of infections are caused by uropathogenic E. coli, a growing public health concern with increasing prevalence of antibiotic resistant strains. Finding therapeutic options that circumvent the need for antibiotics, while boosting patients’ immune response to infection is desirable to counteract further increases in antibiotic resistance and to provide long-lasting resistance to infection. Currently, little is known about how adaptive immune responses, which typically prevent recurrent infection in other organs, arise from the bladder during urinary tract infection. Here, we investigated the initial interactions between immune cell populations of the bladder and uropathogenic E. coli, finding that macrophages are the principal cell population to engulf bacteria. Interestingly, these same cells appear to inhibit the development of adaptive immunity to the bacteria, as their depletion, prior to primary infection, results in a stronger immune response during bacterial challenge. We found that in the absence of macrophages, dendritic cells, which are the most potent initiators of adaptive immunity, are able to take up more bacteria for presentation. Our study has revealed a mechanism in which specific immune cells may act in a manner detrimental to host immunity.
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Affiliation(s)
- Gabriela Mora-Bau
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
| | - Andrew M Platt
- Department of Gene and Cell Medicine and the Immunology Institute, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Free University Medical Center, Amsterdam, The Netherlands
| | - Gwendalyn J Randolph
- Department of Gene and Cell Medicine and the Immunology Institute, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Matthew L Albert
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
| | - Molly A Ingersoll
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
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Draber P, Halova I, Polakovicova I, Kawakami T. Signal transduction and chemotaxis in mast cells. Eur J Pharmacol 2015; 778:11-23. [PMID: 25941081 DOI: 10.1016/j.ejphar.2015.02.057] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/09/2015] [Accepted: 02/17/2015] [Indexed: 01/08/2023]
Abstract
Mast cells play crucial roles in both innate and adaptive arms of the immune system. Along with basophils, mast cells are essential effector cells for allergic inflammation that causes asthma, allergic rhinitis, food allergy and atopic dermatitis. Mast cells are usually increased in inflammatory sites of allergy and, upon activation, release various chemical, lipid, peptide and protein mediators of allergic reactions. Since antigen/immunoglobulin E (IgE)-mediated activation of these cells is a central event to trigger allergic reactions, innumerable studies have been conducted on how these cells are activated through cross-linking of the high-affinity IgE receptor (FcεRI). Development of mature mast cells from their progenitor cells is under the influence of several growth factors, of which the stem cell factor (SCF) seems to be the most important. Therefore, how SCF induces mast cell development and activation via its receptor, KIT, has been studied extensively, including a cross-talk between KIT and FcεRI signaling pathways. Although our understanding of the signaling mechanisms of the FcεRI and KIT pathways is far from complete, pharmaceutical applications of the knowledge about these pathways are underway. This review will focus on recent progresses in FcεRI and KIT signaling and chemotaxis.
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Affiliation(s)
- Petr Draber
- Department of Signal Transduction, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ 14220 Prague, Czech Republic.
| | - Ivana Halova
- Department of Signal Transduction, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ 14220 Prague, Czech Republic
| | - Iva Polakovicova
- Department of Signal Transduction, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ 14220 Prague, Czech Republic
| | - Toshiaki Kawakami
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, 9420 Athena Circle La Jolla, CA 92037, USA; Laboratory for Allergic Disease, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama 230-0045, Japan
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36
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Hofmaier S, Hatzler L, Rohrbach A, Panetta V, Hakimeh D, Bauer CP, Hoffman U, Forster J, Zepp F, Schuster A, Stock P, Wahn U, Keil T, Lau S, Matricardi PM. “Default” versus “pre-atopic” IgG responses to foodborne and airborne pathogenesis-related group 10 protein molecules in birch-sensitized and nonatopic children. J Allergy Clin Immunol 2015; 135:1367-74.e1-8. [DOI: 10.1016/j.jaci.2014.09.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 09/24/2014] [Accepted: 09/29/2014] [Indexed: 10/24/2022]
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37
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Yamaki K, Yoshino S. Therapeutic Potential of Monoclonal IgA Antibodies in Allergic Diseases: Suppressive Effect of IgA on Immune Responses Induced By Re-exposure to Antigen in Sensitized Mice by Monoclonal IgE Antibody That Binds to a Different Epitope of the Same Antigen. Monoclon Antib Immunodiagn Immunother 2015; 34:83-9. [PMID: 25897605 DOI: 10.1089/mab.2014.0078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Repeated exposure to an allergen induces allergic symptoms by activating mast cells that express anti-allergen IgE, which results in further sensitization to an allergen. Considering that additional sensitization elicits more severe allergic reactions upon the next allergen challenge, suppression of the boosting phase represents an efficacious way to prevent and ameliorate allergic diseases. In this study, we investigated the therapeutic potential of allergen-specific monoclonal IgA on allergic diseases. This antibody acts by decreasing immune responses upon exposure to allergens in mice previously sensitized by a monoclonal IgE that recognizes the allergen. The lack of inhibitory effects of anti-ovalbumin monoclonal IgA (OA-4) on either the binding of anti-ovalbumin monoclonal IgE (OE-1) to ovalbumin by ELISA or on ovalbumin-induced degranulation of rat basophilic leukemia RBL2H3 cells sensitized with OE-1 indicated that OA-4 and OE-1 recognized different epitopes on ovalbumin. Immune responses (anti-ovalbumin IgG1 production and cytokine release from splenocytes) induced by intravenous ovalbumin challenge in DBA/1J mice passively sensitized with OE-1 were inhibited by intravenous injection of OA-4 15 min before challenge without affecting anaphylaxis. Moreover, OA-4 injection 1 h after ovalbumin challenge also effectively suppressed immune responses. The achievement of immunosuppression by IgA injection occurred even after allergen challenge in mice in an epitope-independent fashion. These findings suggest that monoclonal IgA administered at the time of hospitalization of a patient with allergic symptoms, who was already exposed to the allergen in the presence of IgE recognizing an undefined epitope(s) on the allergen, should effectively relieve allergic disease through its immunosuppressive effects.
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Affiliation(s)
- Kouya Yamaki
- Department of Pharmacology, Kobe Pharmaceutical University , Kobe, Hyogo, Japan
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38
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Mast cells form antibody-dependent degranulatory synapse for dedicated secretion and defence. Nat Commun 2015; 6:6174. [PMID: 25629393 DOI: 10.1038/ncomms7174] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Accepted: 12/22/2014] [Indexed: 02/02/2023] Open
Abstract
Mast cells are tissue-resident immune cells that play a key role in inflammation and allergy. Here we show that interaction of mast cells with antibody-targeted cells induces the polarized exocytosis of their granules resulting in a sustained exposure of effector enzymes, such as tryptase and chymase, at the cell-cell contact site. This previously unidentified mast cell effector mechanism, which we name the antibody-dependent degranulatory synapse (ADDS), is triggered by both IgE- and IgG-targeted cells. ADDSs take place within an area of cortical actin cytoskeleton clearance in the absence of microtubule organizing centre and Golgi apparatus repositioning towards the stimulating cell. Remarkably, IgG-mediated degranulatory synapses also occur upon contact with opsonized Toxoplasma gondii tachyzoites resulting in tryptase-dependent parasite death. Our results broaden current views of mast cell degranulation by revealing that human mast cells form degranulatory synapses with antibody-targeted cells and pathogens for dedicated secretion and defence.
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39
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Hox V, Desai A, Bandara G, Gilfillan AM, Metcalfe DD, Olivera A. Estrogen increases the severity of anaphylaxis in female mice through enhanced endothelial nitric oxide synthase expression and nitric oxide production. J Allergy Clin Immunol 2014; 135:729-36.e5. [PMID: 25553642 DOI: 10.1016/j.jaci.2014.11.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 11/03/2014] [Accepted: 11/10/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND Clinical observations suggest that anaphylaxis is more common in adult women compared with adult men, although the mechanistic basis for this sex bias is not well understood. OBJECTIVES We sought to document sex-dependent differences in a mouse model of anaphylaxis and explore the role of female sex hormones and the mechanisms responsible. METHODS Passive systemic anaphylaxis was induced in female and male mice by using histamine, as well as IgE or IgG receptor aggregation. Anaphylaxis was assessed by monitoring body temperature, release of mast cell mediators and/or hematocrit, and lung weight as a measure of vascular permeability. A combination of ovariectomy, estrogen receptor antagonism, and estrogen administration techniques were used to establish estrogen involvement. RESULTS Anaphylactic responses were more pronounced in female than male mice. The enhanced severity of anaphylaxis in female mice was eliminated after pretreatment with an estrogen receptor antagonist or ovariectomy but restored after administration of estradiol in ovariectomized mice, demonstrating that the sex-specific differences are due to the female steroid estradiol. Estrogen did not affect mast cell responsiveness or anaphylaxis onset. Instead, it increased tissue expression of endothelial nitric oxide synthase (eNOS). Blockage of NOS activity with the inhibitor L-NG-nitroarginine methyl ester or genetic eNOS deficiency abolished the sex-related differences. CONCLUSION Our study defines a contribution of estrogen through its regulation of eNOS expression and nitric oxide production to vascular hyperpermeability and intensified anaphylactic responses in female mice, providing additional mechanistic insights into risk factors and possible implications for clinical management in the further exploration of human anaphylaxis.
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Affiliation(s)
- Valerie Hox
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Avanti Desai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Geethani Bandara
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Alasdair M Gilfillan
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Ana Olivera
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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Pazmiño FA, Navarrete Jiménez ML. Mecanismos inmunológicos implicados en la patología del asma alérgica. REVISTA DE LA FACULTAD DE MEDICINA 2014. [DOI: 10.15446/revfacmed.v62n2.45417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Guilliams M, Bruhns P, Saeys Y, Hammad H, Lambrecht BN. The function of Fcγ receptors in dendritic cells and macrophages. Nat Rev Immunol 2014; 14:94-108. [PMID: 24445665 DOI: 10.1038/nri3582] [Citation(s) in RCA: 472] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dendritic cells (DCs) and macrophages use various receptors to recognize foreign antigens and to receive feedback control from adaptive immune cells. Although it was long believed that all immunoglobulin Fc receptors are universally expressed by phagocytes, recent findings indicate that only monocyte-derived DCs and macrophages express high levels of activating Fc receptors for IgG (FcγRs), whereas conventional and plasmacytoid DCs express the inhibitory FcγR. In this Review, we discuss how the uptake, processing and presentation of antigens by DCs and macrophages is influenced by FcγR recognition of immunoglobulins and immune complexes in the steady state and during inflammation.
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Affiliation(s)
- Martin Guilliams
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Pierre Bruhns
- 1] Institut Pasteur, Département d'Immunologie, Laboratoire Anticorps en Thérapie et Pathologie, 75015 Paris, France. [2] Institut National de la Santé et de la Recherche Médicale, U760, 75015 Paris, France
| | - Yvan Saeys
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Hamida Hammad
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Bart N Lambrecht
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium. [3] Department of Pulmonary Medicine, Erasmus University Medical Center, 3015 Rotterdam, The Netherlands
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The FcγR of humans and non-human primates and their interaction with IgG: implications for induction of inflammation, resistance to infection and the use of therapeutic monoclonal antibodies. Curr Top Microbiol Immunol 2014; 382:321-52. [PMID: 25116107 DOI: 10.1007/978-3-319-07911-0_15] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Considerable effort has focused on the roles of the individual members of the FcγR receptor (FcγR) family in inflammatory diseases and humoral immunity. Recent work has revealed major roles in infection and in particular HIV pathogenesis and immunity. In addition, FcγR functions underpin the action of many of the successful therapeutic monoclonal antibodies. This emphasises the need for a greater understanding of FcγR function in humans and in the NHP which provides a key model for human immunity and preclinical testing of antibodies. We discuss recent key aspects of the human FcγR receptor biology and structure to define differences and similarities in activity between the human and macaque Fc receptors. These differences and similarities nuance the interpretation of infection and vaccine studies in the macaque. Indeed passive IgG antibody protection in lentivirus infection models in the macaque provided early evidence for the role of Fc receptors in anti-HIV immunity that have subsequently gained support from human vaccine trials. None-the-less the diverse functions and cellular contexts of FcγR receptor expression ensure there is much still to understand of the protective and deleterious effects of FcγRs in HIV infection. Careful comparative studies of human and non-human primate FcγRs will facilitate our appreciation of what attributes of HIV specific IgG antibodies, either acquired naturally or via vaccination, are most important for protection.
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Abstract
Mast cells and basophils are potent effector cells of the innate immune system, and they have both beneficial and detrimental functions for the host. They are mainly implicated in pro-inflammatory responses to allergens but can also contribute to protection against pathogens. Although both cell types were identified more than 130 years ago by Paul Ehrlich, their in vivo functions remain poorly understood. The precursor cell populations that give rise to mast cells and basophils have recently been characterized and isolated. Furthermore, new genetically modified mouse strains have been developed, which enable more specific targeting of mast cells and basophils. Such advances offer new opportunities to uncover the true in vivo activities of these cells and to revisit their previously proposed effector functions.
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Lübben W, Turqueti-Neves A, Okhrimenko A, Stöberl C, Schmidt V, Pfeffer K, Dehnert S, Wünsche S, Storsberg S, Paul S, Bauer S, Riethmüller G, Voehringer D, Yu P. IgE knock-in mice suggest a role for high levels of IgE in basophil-mediated active systemic anaphylaxis. Eur J Immunol 2013; 43:1231-42. [PMID: 23423996 DOI: 10.1002/eji.201242675] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 01/16/2013] [Accepted: 02/14/2013] [Indexed: 01/25/2023]
Abstract
Immunoglobulin E (IgE) production is tightly regulated at the cellular and genetic levels and is believed to be central to allergy development. At least two cellular pathways exist that lead to systemic anaphylaxis reactions in vivo: IgE-sensitized mast cells and IgG1-sensitized basophils. Passive anaphylaxis, by application of allergen and allergen-specific antibodies in mice, indicates a differential contribution of immunoglobulin isotypes to anaphylaxis. However, analysis of a dynamic immunization-mediated antibody response in anaphylaxis is difficult. Here, we generated IgE knock-in mice (IgE(ki) ), which express the IgE heavy chain instead of IgG1, in order to analyze the contribution of IgG1 and IgE to active anaphylaxis in vivo. IgE(ki) mice display increased IgE production both in vitro and in vivo. The sensitization of IgE(ki) mice by immunization followed by antigen challenge leads to increased anaphylaxis. Homozygous IgE(ki) mice, which lack IgG1 due to the knock-in strategy, are most susceptible to active systemic anaphylaxis. The depletion of basophils demonstrates their importance in IgE-mediated anaphylaxis. Therefore, we propose that an enhanced, antigen-specific, polyclonal IgE response, as is the case in allergic patients, is probably the most efficient way to sensitize basophils to contribute to systemic anaphylaxis in vivo.
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Affiliation(s)
- Wolger Lübben
- Institute for Immunology, Philipps-Universität Marburg, Marburg, Germany
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Olivera A, Dillahunt SE, Rivera J. Interrogation of sphingosine-1-phosphate receptor 2 function in vivo reveals a prominent role in the recovery from IgE and IgG-mediated anaphylaxis with minimal effect on its onset. Immunol Lett 2013; 150:89-96. [PMID: 23337656 PMCID: PMC3602243 DOI: 10.1016/j.imlet.2013.01.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 12/21/2012] [Accepted: 01/07/2013] [Indexed: 11/23/2022]
Abstract
Autocrine stimulation of S1PR2, a receptor for the lipid mediator sphingosine-1-phosphate (S1P), has been implicated in mast cell degranulation to IgE/antigen (Ag) although, paradoxically, its ligand cannot trigger substantial degranulation. Additionally, the in vivo role of S1PR2 in the overall allergic responses is unclear since S1PR2 was reported to be required for the onset of systemic anaphylaxis by IgE/Ag but, in apparent contradiction, also for the recovery from histamine-induced anaphylaxis in a mast cell independent manner. Here, we sought to clarify the role of S1PR2 in mast cell degranulation and in IgE and IgG-mediated anaphylaxis. Lack of S1PR2 reduced IgE/Ag-induced degranulation in in vitro experiments with mucosal mast cells, but had no effect on connective tissue type mast cells. This latter response correlated with a lack of involvement of S1PR2 in the onset of non-lethal IgE/Ag-mediated systemic and cutaneous anaphylaxis. However, S1pr2(-/-) mice were slow to recover (or did not recover) from FcɛRI-mediated anaphylaxis, an outcome that mirrored their known impairment in histamine clearance due to defective vascular tone. A minor role for S1PR2 in mast cell degranulation was uncovered upon engagement of low affinity receptors for IgG and in the onset of IgG-mediated anaphylaxis. Our findings show that S1PR2 is dispensable for initiating IgE/Ag-mediated connective tissue mast cell degranulation and anaphylaxis, but it is required for normal recovery from anaphylaxis.
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Affiliation(s)
- Ana Olivera
- Laboratory of Molecular Immunogenetics, National Institute of Arthritis and Musculoskelatal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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