CXCR2 Is Required for Neutrophilic Airway Inflammation and Hyperresponsiveness in a Mouse Model of Human Rhinovirus Infection
- 15 November 2009
- journal article
- Published by The American Association of Immunologists in The Journal of Immunology
- Vol. 183 (10), 6698-6707
- https://doi.org/10.4049/jimmunol.0900298
Abstract
Human rhinovirus (RV) infection is responsible for the majority of virus-induced asthma exacerbations. Using a mouse model of human RV infection, we sought to determine the requirement of CXCR2, the receptor for ELR-positive CXC chemokines, for RV-induced airway neutrophilia and hyperresponsiveness. Wild-type and CXCR2−/− mice were inoculated intranasally with RV1B or sham HeLa cell supernatant. Following RV1B infection, CXCR2−/− mice showed reduced airway and lung neutrophils and cholinergic responsiveness compared with wild-type mice. Similar results were obtained in mice treated with neutralizing Ab to Ly6G, a neutrophil-depleting Ab. Lungs from RV-infected, CXCR2−/− mice showed significantly reduced production of TNF-α, MIP-2/CXCL2, and KC/CXCL1 and lower expression of MUC5B compared with RV-treated wild-type mice. The requirement of TNF-α for RV1B-induced airway responses was tested using TNFR1−/− mice. TNFR1−/− animals displayed reduced airway responsiveness to RV1B, even when exogenous MIP-2 was added to the airways. We conclude that CXCR2 is required for RV-induced neutrophilic airway inflammation and that neutrophil TNF-α release is required for airway hyperresponsiveness.Keywords
This publication has 48 references indexed in Scilit:
- Rhinovirus-induced lower respiratory illness is increased in asthma and related to virus load and Th1/2 cytokine and IL-10 productionProceedings of the National Academy of Sciences of the United States of America, 2008
- Human Rhinovirus 1B Exposure Induces Phosphatidylinositol 3-Kinase–dependent Airway Inflammation in MiceAmerican Journal of Respiratory and Critical Care Medicine, 2008
- Mouse models of rhinovirus-induced disease and exacerbation of allergic airway inflammationNature Medicine, 2008
- Role of CD38 in TNF-α-induced airway hyperresponsivenessAmerican Journal of Physiology-Lung Cellular and Molecular Physiology, 2008
- A Diverse Group of Previously Unrecognized Human Rhinoviruses Are Common Causes of Respiratory Illnesses in InfantsPLOS ONE, 2007
- Antibody-antigen interaction in the airway drives early granulocyte recruitment through BLT1American Journal of Physiology-Lung Cellular and Molecular Physiology, 2006
- Phosphatidylinositol 3-Kinase Is Required for Rhinovirus-induced Airway Epithelial Cell Interleukin-8 ExpressionOnline Journal of Public Health Informatics, 2005
- Rhinovirus Induction of the CXC Chemokine Epithelial‐Neutrophil Activating Peptide‐78 in Bronchial EpitheliumThe Journal of Infectious Diseases, 2003
- Tumor Necrosis Factor-α–Induced Activation of RhoA in Airway Smooth Muscle Cells: Role in the Ca2+Sensitization of Myosin Light Chain20PhosphorylationMolecular Pharmacology, 2003
- Interleukin 10 (IL-10) upregulates IL-1 receptor antagonist production from lipopolysaccharide-stimulated human polymorphonuclear leukocytes by delaying mRNA degradation.The Journal of Experimental Medicine, 1994