tetano
Editor, Senior Moderator
Am J Physiol Lung Cell Mol Physiol. 2014 May 16. pii: ajplung.00368.2013. [Epub ahead of print]
EGFR activation suppresses respiratory virus-induced IRF1-dependent CXCL10 production.
Kalinowski A1, Ueki I2, Min-Oo G2, Ballon-Landa E2, Knoff D1, Galen B1, Lanier LL3, Nadel JA4, Koff J5.
Author information
Abstract
Airway epithelial cells are the primary cell type involved in respiratory viral infection. Upon infection, airway epithelium plays a critical role in host defense against viral infection by contributing to innate and adaptive immune responses. Influenza A virus, Rhinovirus, and Respiratory Syncytial virus (RSV) represent a broad range of human viral pathogens that cause viral pneumonia and induce exacerbations of asthma and chronic obstructive pulmonary disease. These respiratory viruses induce airway epithelial production of IL-8, which involves epidermal growth factor receptor (EGFR) activation. EGFR activation involves an integrated signaling pathway that includes NADPH oxidase activation of metalloproteinase, and EGFR pro-ligand release that activates EGFR. Because respiratory viruses have been shown to activate EGFR via this signaling pathway in airway epithelium, we investigated the effect of virus-induced EGFR activation on airway epithelial antiviral responses. CXCL10, a chemokine produced by airway epithelial cells in response to respiratory viral infection, contributes to the recruitment of lymphocytes to target and kill virus-infected cells. While respiratory viruses activate EGFR, the interaction between CXCL10 and EGFR signaling pathways is unclear, and the potential for EGFR signaling to suppress CXCL10 has not been explored. Here, we report that respiratory virus-induced EGFR activation suppresses CXCL10 production. We found that Influenza virus-, Rhinovirus-, and RSV-induced EGFR activation suppressed IFN regulatory factor (IRF) 1-dependent CXCL10 production. In addition, inhibition of EGFR during viral infection augmented IRF1 and CXCL10. These findings describe a novel mechanism that viruses use to suppress endogenous antiviral defenses, and provide potential targets for future therapies.
Copyright ? 2013, American Journal of Physiology - Lung Cellular and Molecular Physiology.
KEYWORDS:
CXCL10, EGFR, IRF1, innate immunity, virus
PMID:
24838750
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24838750
EGFR activation suppresses respiratory virus-induced IRF1-dependent CXCL10 production.
Kalinowski A1, Ueki I2, Min-Oo G2, Ballon-Landa E2, Knoff D1, Galen B1, Lanier LL3, Nadel JA4, Koff J5.
Author information
Abstract
Airway epithelial cells are the primary cell type involved in respiratory viral infection. Upon infection, airway epithelium plays a critical role in host defense against viral infection by contributing to innate and adaptive immune responses. Influenza A virus, Rhinovirus, and Respiratory Syncytial virus (RSV) represent a broad range of human viral pathogens that cause viral pneumonia and induce exacerbations of asthma and chronic obstructive pulmonary disease. These respiratory viruses induce airway epithelial production of IL-8, which involves epidermal growth factor receptor (EGFR) activation. EGFR activation involves an integrated signaling pathway that includes NADPH oxidase activation of metalloproteinase, and EGFR pro-ligand release that activates EGFR. Because respiratory viruses have been shown to activate EGFR via this signaling pathway in airway epithelium, we investigated the effect of virus-induced EGFR activation on airway epithelial antiviral responses. CXCL10, a chemokine produced by airway epithelial cells in response to respiratory viral infection, contributes to the recruitment of lymphocytes to target and kill virus-infected cells. While respiratory viruses activate EGFR, the interaction between CXCL10 and EGFR signaling pathways is unclear, and the potential for EGFR signaling to suppress CXCL10 has not been explored. Here, we report that respiratory virus-induced EGFR activation suppresses CXCL10 production. We found that Influenza virus-, Rhinovirus-, and RSV-induced EGFR activation suppressed IFN regulatory factor (IRF) 1-dependent CXCL10 production. In addition, inhibition of EGFR during viral infection augmented IRF1 and CXCL10. These findings describe a novel mechanism that viruses use to suppress endogenous antiviral defenses, and provide potential targets for future therapies.
Copyright ? 2013, American Journal of Physiology - Lung Cellular and Molecular Physiology.
KEYWORDS:
CXCL10, EGFR, IRF1, innate immunity, virus
PMID:
24838750
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24838750