Article (Scientific journals)
IgE Effector Mechanisms, in Concert with Mast Cells, Contribute to Acquired Host Defense against Staphylococcusaureus.
Starkl, Philipp; Watzenboeck, Martin L.; Popov, Lauren M. et al.
2020In Immunity, 53 (4), p. 793-804.e9
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Keywords :
Adaptive Immunity/immunology; Allergens/immunology; Animals; Female; Hypersensitivity/immunology/microbiology; Immunoglobulin E/immunology; Mast Cells/immunology/microbiology; Mice; Mice, Inbred C57BL; Skin/immunology/microbiology; Staphylococcal Infections/immunology/microbiology; Staphylococcal Skin Infections/immunology/microbiology; Staphylococcus aureus/immunology; IgE; Staphylococcus aureus; allergy; allergy module; bacteria; basophils; degranulation; host defense; mast cells; type 2 immunity
Abstract :
[en] Allergies are considered to represent mal-directed type 2 immune responses against mostly innocuous exogenous compounds. Immunoglobulin E (IgE) antibodies are a characteristic feature of allergies and mediate hypersensitivity against allergens through activation of effector cells, particularly mast cells (MCs). Although the physiological functions of this dangerous branch of immunity have remained enigmatic, recent evidence shows that allergic immune reactions can help to protect against the toxicity of venoms. Because bacteria are a potent alternative source of toxins, we assessed the possible role of allergy-like type 2 immunity in antibacterial host defense. We discovered that the adaptive immune response against Staphylococcus aureus (SA) skin infection substantially improved systemic host defense against secondary SA infections in mice. Moreover, this acquired protection depended on IgE effector mechanisms and MCs. Importantly, our results reveal a previously unknown physiological function of allergic immune responses, IgE antibodies, and MCs in host defense against a pathogenic bacterium.
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
Starkl, Philipp
Watzenboeck, Martin L.
Popov, Lauren M.
Zahalka, Sophie
Hladik, Anastasiya
Lakovits, Karin
Radhouani, Mariem
Haschemi, Arvand
Marichal, Thomas  ;  Université de Liège - ULiège > Physiologie générale et des systèmes
Reber, Laurent L.
Gaudenzio, Nicolas
Sibilano, Riccardo
Stulik, Lukas
Fontaine, Frédéric
Mueller, André C.
Amieva, Manuel R.
Galli, Stephen J.
Knapp, Sylvia
More authors (8 more) Less
Language :
English
Title :
IgE Effector Mechanisms, in Concert with Mast Cells, Contribute to Acquired Host Defense against Staphylococcusaureus.
Publication date :
2020
Journal title :
Immunity
ISSN :
1074-7613
eISSN :
1097-4180
Publisher :
Cell Press, United States - Massachusetts
Volume :
53
Issue :
4
Pages :
793-804.e9
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright © 2020 Elsevier Inc. All rights reserved.
Available on ORBi :
since 04 November 2021

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