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Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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Related Experiment Video

Updated: May 29, 2026

High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
10:00

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Published on: March 24, 2015

Mapping a dynamic innate immunity protein interaction network regulating type I interferon production.

Shitao Li1, Lingyan Wang, Michael Berman

  • 1Division of Immunology, Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA 02115, USA. lishitao@hotmail.com

Immunity
|September 10, 2011
PubMed
Summary

Researchers mapped the human innate immunity interactome (HI5) to understand type I interferon production. Mind bomb (MIB) E3 ligases were identified as key regulators of antiviral responses, particularly to cytosolic RNA.

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Last Updated: May 29, 2026

High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
10:00

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08:09

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Published on: March 24, 2017

Area of Science:

  • Immunology
  • Molecular Biology
  • Systems Biology

Background:

  • Innate immunity relies on complex signaling networks to detect microbial threats.
  • Type I interferons are crucial cytokines for antiviral defense.
  • Understanding protein interactions is key to deciphering immune signaling pathways.

Purpose of the Study:

  • To systematically investigate innate immune signaling networks regulating type I interferon production.
  • To create a comprehensive human innate immunity interactome for type I interferon (HI5).
  • To identify key regulators of antiviral responses.

Main Methods:

  • Protein complex analysis after microbial recognition.
  • Construction of the human innate immunity interactome (HI5) with 401 interactions.
  • Gene overexpression and depletion analyses to identify regulatory genes.
  • Mechanistic studies on mind bomb (MIB) E3 ligases and TBK1 kinase.

Main Results:

  • The HI5 interactome comprises 401 unique interactions, with 21% modulated by RNA, DNA, or LPS.
  • Twenty-two genes were identified as regulators of NF-κB, ISRE activity, viral replication, and interferon production.
  • Mind bomb (MIB) E3 ligases were found to ubiquitinate TBK1, a key kinase in interferon production.
  • MIB genes selectively control responses to cytosolic RNA, and MIB deficiency impairs antiviral activity.

Conclusions:

  • The HI5 provides a dynamic resource for studying innate immune signaling.
  • MIB proteins act as positive regulators of antiviral responses, particularly against cytosolic RNA.
  • This study elucidates a critical regulatory mechanism in the type I interferon pathway.