Targeting the interleukin‐7 receptor alpha by an anti‐CD127 monoclonal antibody improves allergic airway inflammation in mice
- 17 May 2020
- journal article
- research article
- Published by Wiley in Clinical & Experimental Allergy
- Vol. 50 (7), 824-834
- https://doi.org/10.1111/cea.13665
Abstract
Background Interleukin‐7 (IL‐7) is the most important cytokine for T cell homeostasis. IL‐7 signals through the IL‐7 receptor (IL‐7R) which is composed of an alpha chain (IL‐7Rα), also called CD127 and a common gamma chain. T lymphocytes, especially T helper type 2, play a crucial role in the pathobiology of allergic asthma. Objective To study the effects of an anti‐CD127 monoclonal antibody (mAb) in a murine model of allergic airway inflammation induced by house dust mite (HDM). Methods Allergic airway inflammation was induced in mice using a protocol comprising 4 weekly percutaneous sensitizations followed by 2 weekly intranasal challenges with total HDM extracts and treated by intraperitoneal injections of an anti‐CD127 mAb. Because CD127 is shared by both IL‐7R and the receptor for thymic stromal lymphopoietin (TSLP), a group of mice was also treated with an anti‐IL‐7 mAb to block only the IL‐7 signaling pathway. Results Anti‐CD127 mAb‐treated mice showed significantly lower airway resistance in response to methacholine and improvement in lung histology compared to isotype mAb‐treated animals. Anti‐CD127 mAb treatment significantly decreased the mRNA expression of Th2 cytokines (IL‐4, IL‐5, and IL‐13) and chemokines (CCL5/RANTES) in lung tissue, decreased the secretion of Th2 cytokines (IL‐4, IL‐5, and IL‐13) and chemokines (CXCL1 and CCL11/eotaxin) in bronchoalveolar lavage fluid (BALF), decreased serum HDM‐specific IgE, and reduced the number of total leukocytes and leukocyte subpopulations such as eosinophils, macrophages, lymphocytes, T lymphocytes, and ILC2 in BALF and lung tissue. Mice treated with anti‐IL‐7 mAb also showed less allergic airway inflammation as evidenced by significantly lower airway resistance and fewer leukocytes in BALF and lung tissue compared to mice treated with the corresponding isotype control mAb. Conclusion and Clinical Relevance Targeting the IL‐7Rα by an anti‐CD127 mAb improves allergic airway inflammation in mice and presents as a potential therapeutic approach for allergic asthma.Keywords
Funding Information
- Agence Nationale pour le Développement de la Recherche en Santé (ANR‐16‐IDEX‐0007)
This publication has 40 references indexed in Scilit:
- Thymic stromal lymphopoietin receptor blockade reduces allergic inflammation in a cynomolgus monkey model of asthmaJournal of Allergy and Clinical Immunology, 2013
- Genomic and Structural Characterization of Kunitz-Type Peptide LmKTT-1a Highlights Diversity and Evolution of Scorpion Potassium Channel ToxinsPLOS ONE, 2013
- Neutralization of TSLP Inhibits Airway Remodeling in a Murine Model of Allergic Asthma Induced by Chronic Exposure to House Dust MitePLOS ONE, 2013
- IL-7 signaling and CD127 receptor regulation in the control of T cell homeostasisSeminars in Immunology, 2012
- Anti–IL-7 receptor-α reverses established type 1 diabetes in nonobese diabetic mice by modulating effector T-cell functionProceedings of the National Academy of Sciences of the United States of America, 2012
- IL-7 receptor blockade reverses autoimmune diabetes by promoting inhibition of effector/memory T cellsProceedings of the National Academy of Sciences of the United States of America, 2012
- Interleukin-7 receptor blockade suppresses adaptive and innate inflammatory responses in experimental colitisJournal of Inflammation, 2012
- Systemic Autoimmunity and Lymphoproliferation Are Associated with Excess IL-7 and Inhibited by IL-7Rα BlockadePLOS ONE, 2011
- Combined forced oscillation and forced expiration measurements in mice for the assessment of airway hyperresponsivenessRespiratory Research, 2010
- Thymic Stromal Lymphopoietin Promotes Lung Inflammation Through Activation of Dendritic CellsJournal of Asthma, 2010