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Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
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Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production

Published on: March 2, 2014

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Manipulation of the innate immune response by human papillomaviruses

Shiyuan Hong1, Laimonis A Laimins1

  • 1Department of Microbiology-Immunology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, United States.

Virus Research
|November 10, 2016
PubMed

Insights

Human papillomaviruses (HPVs) evade the innate immune system by blocking key defense pathways. Understanding these mechanisms, including STAT-5 activation, offers new therapeutic targets for HPV infections and associated cancers.

Area of Science:

  • Immunology
  • Virology
  • Oncology

Background:

  • The innate immune system is the primary defense against pathogens.
  • Human papillomaviruses (HPVs) are successful pathogens that have evolved to evade innate immunity.
  • Persistent HPV infections are a major cause of anogenital cancers.

Purpose of the Study:

  • To investigate how HPVs interfere with innate immune pathways.
  • To explore the role of STAT-5 activation in HPV life cycle and genome amplification.
  • To identify potential therapeutic targets for HPV infections.

Main Methods:

  • Analysis of HPV mechanisms targeting immune sensing, interferon synthesis, and JAK/STAT signaling.
  • Investigation of HPV-mediated activation of STAT-5 and downstream DNA damage response pathways (ATM/ATR).

Main Results:

  • HPVs block innate immune sensing, interferon production, and JAK/STAT signaling.
  • HPVs activate STAT-5, which is crucial for their replication and genome amplification via ATM/ATR pathways.
  • Disruption of these viral evasion strategies is key to establishing persistent infections.

Conclusions:

  • HPVs employ sophisticated strategies to subvert innate immunity for their survival and replication.
  • STAT-5 activation and associated DNA damage response pathways are critical for HPV pathogenesis.
  • Targeting these HPV-hijacked pathways presents a promising strategy for novel antiviral therapies against HPV infections and related cancers.
Keywords:
InflammasomeInterferonsJAK-STAT pathwayPAMPs

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