Mir-302c mediates influenza A virus-induced IFNβ expression by targeting NF-κB inducing kinase

FEBS Lett. 2015 Dec 21;589(24 Pt B):4112-8. doi: 10.1016/j.febslet.2015.11.011. Epub 2015 Nov 19.

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.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions
  • Active Transport, Cell Nucleus
  • Cell Line, Tumor
  • Enzyme Repression
  • Gene Expression Regulation
  • Host-Pathogen Interactions
  • Humans
  • Immunity, Innate*
  • Immunity, Mucosal*
  • Influenza A Virus, H3N2 Subtype / immunology*
  • Influenza A Virus, H3N2 Subtype / physiology
  • Interferon Regulatory Factor-3 / antagonists & inhibitors
  • Interferon Regulatory Factor-3 / genetics
  • Interferon Regulatory Factor-3 / metabolism
  • Interferon Regulatory Factor-7 / antagonists & inhibitors
  • Interferon Regulatory Factor-7 / genetics
  • Interferon Regulatory Factor-7 / metabolism
  • Interferon-beta / agonists
  • Interferon-beta / antagonists & inhibitors*
  • Interferon-beta / genetics
  • Interferon-beta / metabolism
  • MicroRNAs / metabolism*
  • NF-kappa B / agonists
  • NF-kappa B / antagonists & inhibitors
  • NF-kappa B / metabolism
  • NF-kappaB-Inducing Kinase
  • Protein Serine-Threonine Kinases / antagonists & inhibitors*
  • Protein Serine-Threonine Kinases / metabolism
  • RNA, Messenger / metabolism
  • Respiratory Mucosa / enzymology
  • Respiratory Mucosa / immunology*
  • Respiratory Mucosa / metabolism
  • Respiratory Mucosa / virology
  • Response Elements
  • Signal Transduction
  • Virus Replication

Substances

  • 3' Untranslated Regions
  • IRF3 protein, human
  • IRF7 protein, human
  • Interferon Regulatory Factor-3
  • Interferon Regulatory Factor-7
  • MIRN302A microRNA, human
  • MIRN520 microRNA, human
  • MicroRNAs
  • NF-kappa B
  • RNA, Messenger
  • Interferon-beta
  • Protein Serine-Threonine Kinases