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A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions
13:56

A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions

Published on: July 18, 2013

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Comparative host-coronavirus protein interaction networks reveal pan-viral disease mechanisms

David E Gordon1,2,3,4, Joseph Hiatt1,4,5,6,7, Mehdi Bouhaddou1,2,3,4

  • 1Quantitative Biosciences Institute (QBI) COVID-19 Research Group (QCRG), San Francisco, CA 94158, USA.

Science (New York, N.Y.)
|October 16, 2020
PubMed

Insights

This study reveals Tom70 as a key host factor interacting with SARS-CoV-1 and SARS-CoV-2, offering new targets for COVID-19 drug development. Understanding these viral-human interactions aids in combating coronavirus proliferation.

Area of Science:

  • Virology
  • Molecular Biology
  • Immunology

Background:

  • The COVID-19 pandemic, caused by SARS-CoV-2, poses significant global health and economic risks.
  • SARS-CoV-2 shares genetic and structural similarities with SARS-CoV-1 and MERS-CoV, suggesting conserved pathogenic mechanisms.

Purpose of the Study:

  • To conduct a comparative analysis of viral-human protein-protein interactions and protein localization across SARS-CoV-1, SARS-CoV-2, and MERS-CoV.
  • To identify host factors crucial for coronavirus proliferation through functional genetic screening.

Main Methods:

  • Comparative analysis of viral-human protein-protein interactions and viral protein localization.
  • Functional genetic screening to identify host factors impacting coronavirus proliferation.
  • Cryo-electron microscopy for structural characterization of protein interactions.

Main Results:

  • Identified Tom70, a mitochondrial chaperone, as a host factor interacting with SARS-CoV-1 and SARS-CoV-2 via the viral ORF9b protein.
  • Structurally characterized the interaction between Tom70 and SARS-CoV-2 ORF9b using cryo-electron microscopy.
  • Integrated host factor data with COVID-19 patient genetic and billing records to identify potential therapeutic strategies.

Conclusions:

  • Tom70 is a critical host factor involved in the replication of SARS-CoV-1 and SARS-CoV-2.
  • The identified viral-human interactions and host factors provide a basis for developing novel antiviral therapies.
  • Further molecular and clinical studies are warranted to explore the identified drug treatment potentials.

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