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Antagonism of innate immunity by paramyxovirus accessory proteins

Raychel Chambers1, Toru Takimoto1

  • 1Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA.

Viruses
|October 14, 2011
PubMed

Insights

Paramyxoviruses use accessory proteins to block the host

Area of Science:

  • Virology
  • Immunology
  • Molecular Biology

Background:

  • Paramyxovirinae are RNA viruses causing significant human and animal diseases.
  • Accessory proteins from the P/V/C gene are key to viral pathogenicity.
  • These proteins interfere with type I interferon (IFN) induction and signaling pathways.

Purpose of the Study:

  • To investigate how paramyxoviruses antagonize innate immunity.
  • To understand the variations in blocking IFN induction and signaling pathways.
  • To explore the role of accessory proteins in viral host range and pathogenicity.

Main Methods:

  • Comparative analysis of accessory protein functions across different paramyxoviruses.
  • Examination of viral strategies to counteract intracellular RNA helicases (MDA-5, RIG-I).
  • Assessment of functional specificity in antagonizing the interferon response.

Main Results:

  • Paramyxoviruses commonly block IFN induction and the Jak/STAT pathway.
  • Mechanisms of inhibition and counteraction of intracellular detectors vary among viruses.
  • Specific antagonism strategies correlate with viral host range and pathogenicity.

Conclusions:

  • Paramyxovirus accessory proteins are crucial for evading host innate immunity.
  • Variations in immune evasion strategies contribute to distinct viral host ranges.
  • Understanding these mechanisms is key to controlling paramyxovirus infections.
Keywords:
apoptosisinnate immunityinterferonparamyxoviruses

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