Abstract
Little is known about the role of microRNA during influenza A virus (IAV) infection. We observed that NIK 3'UTR luciferase activity was elevated during IAV infection. Further studies demonstrated that miR-302c reduced NIK expression, resulting in the reduction of IFNβ mRNA expression. We found that miR-302c prevented the translocation of NF-κB from the cytosol to the nucleus. Furthermore, IAV infection downregulated miR-302c expression, leading to the activation of IFNβ expression and the inhibition of viral replication. Compared to miR-302c, miR-520e cannot promote viral replication and production, although the two microRNAs target the same site of the NIK 3'UTR. Collectively, our work defines a novel signaling pathway implicated in the control of IFNβ mRNA expression during IAV infection.
Keywords:
Influenza A virus; Innate immune; MiR-302c; NF-κB-inducing kinase; Type I IFN.
Copyright © 2015 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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3' Untranslated Regions
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Active Transport, Cell Nucleus
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Cell Line, Tumor
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Enzyme Repression
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Gene Expression Regulation
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Host-Pathogen Interactions
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Humans
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Immunity, Innate*
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Immunity, Mucosal*
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Influenza A Virus, H3N2 Subtype / immunology*
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Influenza A Virus, H3N2 Subtype / physiology
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Interferon Regulatory Factor-3 / antagonists & inhibitors
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Interferon Regulatory Factor-3 / genetics
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Interferon Regulatory Factor-3 / metabolism
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Interferon Regulatory Factor-7 / antagonists & inhibitors
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Interferon Regulatory Factor-7 / genetics
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Interferon Regulatory Factor-7 / metabolism
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Interferon-beta / agonists
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Interferon-beta / antagonists & inhibitors*
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Interferon-beta / genetics
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Interferon-beta / metabolism
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MicroRNAs / metabolism*
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NF-kappa B / agonists
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NF-kappa B / antagonists & inhibitors
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NF-kappa B / metabolism
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NF-kappaB-Inducing Kinase
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Protein Serine-Threonine Kinases / antagonists & inhibitors*
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Protein Serine-Threonine Kinases / metabolism
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RNA, Messenger / metabolism
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Respiratory Mucosa / enzymology
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Respiratory Mucosa / immunology*
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Respiratory Mucosa / metabolism
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Respiratory Mucosa / virology
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Response Elements
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Signal Transduction
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Virus Replication
Substances
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3' Untranslated Regions
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IRF3 protein, human
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IRF7 protein, human
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Interferon Regulatory Factor-3
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Interferon Regulatory Factor-7
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MIRN302A microRNA, human
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MIRN520 microRNA, human
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MicroRNAs
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NF-kappa B
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RNA, Messenger
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Interferon-beta
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Protein Serine-Threonine Kinases