Infection with influenza virus induces IL-33 in murine lungs

IL-33, a novel IL-1 family member, is crucially expressed and involved in pulmonary diseases, but its regulation in viral diseases such as influenza A virus (IAV) remains unclear. This study aimed to characterize the expression and release of IL-33 in lungs of IAV-infected mice in vivo and in murine...

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Veröffentlicht in:American journal of respiratory cell and molecular biology 2011-12, Vol.45 (6), p.1125-1132
Hauptverfasser: Le Goffic, Ronan, Arshad, Muhammad Imran, Rauch, Michel, L'Helgoualc'h, Annie, Delmas, Bernard, Piquet-Pellorce, Claire, Samson, Michel
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container_end_page 1132
container_issue 6
container_start_page 1125
container_title American journal of respiratory cell and molecular biology
container_volume 45
creator Le Goffic, Ronan
Arshad, Muhammad Imran
Rauch, Michel
L'Helgoualc'h, Annie
Delmas, Bernard
Piquet-Pellorce, Claire
Samson, Michel
description IL-33, a novel IL-1 family member, is crucially expressed and involved in pulmonary diseases, but its regulation in viral diseases such as influenza A virus (IAV) remains unclear. This study aimed to characterize the expression and release of IL-33 in lungs of IAV-infected mice in vivo and in murine respiratory epithelial cells (MLE-15) in vitro. Our results provide evidence of up-regulation of IL-33 mRNA in IAV-infected murine lungs, compared with noninfected control mice. The overexpression of IL-33 was positively correlated with a significant increase in mRNA encoding the proinflammatory cytokines TNF-α, IFN-γ, IL-1β, and IL-6, and was also associated with an increase in IFN-β mRNA. A profound overexpression of IL-33 protein was evident in IAV-infected murine lungs and bronchoalveolar lavages of influenza-infected mice, compared with low concentrations in naive lungs in vivo. Immunolocalization highlighted the cellular expression of IL-33 in alveolar epithelial and endothelial cells, along with increased infiltrate cells in virus-infected lungs. Further in vitro experiments showed an induction of IL-33 transcript-in MLE-15 cells and human epithelial cells (A549) infected with different strains of IAV in comparison with noninfected cells. In conclusion, our findings evidenced a profound expression of IL-33 in lungs during both in vivo and in vitro IAV infections, suggesting a role for IL-33 in virus-induced lung infections.
doi_str_mv 10.1165/rcmb.2010-0516OC
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subjects Animals
Bronchoalveolar Lavage
Cell Line
Endothelial Cells
Endothelial Cells - immunology
Endothelial Cells - metabolism
Endothelial Cells - virology
Epithelial Cells
Epithelial Cells - immunology
Epithelial Cells - metabolism
Epithelial Cells - virology
Female
Gene Expression Regulation
Gene Expression Regulation - immunology
Human health and pathology
Humans
Influenza A Virus, H1N1 Subtype
Influenza A Virus, H1N1 Subtype - immunology
Influenza A Virus, H1N1 Subtype - metabolism
Influenza A Virus, H3N2 Subtype
Influenza A Virus, H3N2 Subtype - immunology
Influenza A Virus, H3N2 Subtype - metabolism
Interferon-beta
Interferon-beta - biosynthesis
Interferon-beta - immunology
Interferon-gamma
Interferon-gamma - biosynthesis
Interferon-gamma - immunology
Interleukin-1beta
Interleukin-1beta - biosynthesis
Interleukin-1beta - immunology
Interleukin-33
Interleukin-6
Interleukin-6 - biosynthesis
Interleukin-6 - immunology
Interleukins
Interleukins - biosynthesis
Interleukins - immunology
Life Sciences
Lung
Lung - immunology
Lung - metabolism
Lung - virology
Mice
Orthomyxoviridae Infections
Orthomyxoviridae Infections - immunology
Orthomyxoviridae Infections - metabolism
RNA, Messenger
RNA, Messenger - biosynthesis
RNA, Messenger - immunology
Tumor Necrosis Factor-alpha
Tumor Necrosis Factor-alpha - biosynthesis
Tumor Necrosis Factor-alpha - immunology
title Infection with influenza virus induces IL-33 in murine lungs
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