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Open Access Publications from the University of California

Targeting Viral Proteostasis Limits Influenza Virus, HIV, and Dengue Virus Infection.

  • Author(s): Heaton, Nicholas S
  • Moshkina, Natasha
  • Fenouil, Romain
  • Gardner, Thomas J
  • Aguirre, Sebastian
  • Shah, Priya S
  • Zhao, Nan
  • Manganaro, Lara
  • Hultquist, Judd F
  • Noel, Justine
  • Sachs, David
  • Hamilton, Jennifer
  • Leon, Paul E
  • Chawdury, Amit
  • Tripathi, Shashank
  • Melegari, Camilla
  • Campisi, Laura
  • Hai, Rong
  • Metreveli, Giorgi
  • Gamarnik, Andrea V
  • García-Sastre, Adolfo
  • Greenbaum, Benjamin
  • Simon, Viviana
  • Fernandez-Sesma, Ana
  • Krogan, Nevan J
  • Mulder, Lubbertus CF
  • van Bakel, Harm
  • Tortorella, Domenico
  • Taunton, Jack
  • Palese, Peter
  • Marazzi, Ivan
  • et al.

Viruses are obligate parasites and thus require the machinery of the host cell to replicate. Inhibition of host factors co-opted during active infection is a strategy hosts use to suppress viral replication and a potential pan-antiviral therapy. To define the cellular proteins and processes required for a virus during infection is thus crucial to understanding the mechanisms of virally induced disease. In this report, we generated fully infectious tagged influenza viruses and used infection-based proteomics to identify pivotal arms of cellular signaling required for influenza virus growth and infectivity. Using mathematical modeling and genetic and pharmacologic approaches, we revealed that modulation of Sec61-mediated cotranslational translocation selectively impaired glycoprotein proteostasis of influenza as well as HIV and dengue viruses and led to inhibition of viral growth and infectivity. Thus, by studying virus-human protein-protein interactions in the context of active replication, we have identified targetable host factors for broad-spectrum antiviral therapies.

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