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Related Concept Videos

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...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
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Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Antimicrobial Proteins01:23

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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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Viruses with RNA Genomes01:29

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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...

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Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
08:32

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Published on: March 2, 2014

Interferons and viruses: signaling for supremacy.

C L Galligan1, T T Murooka, R Rahbar

  • 1Department of Immunology, University of Toronto, Toronto, Canada, and Toronto General Research Institute, University Health Network, Toronto, Canada.

Immunologic Research
|September 28, 2006
PubMed
Summary

Interferon (IFN)-alpha and IFN-beta are key to fighting infections by regulating immune responses. Our research explores the complex protein interactions within the IFN system that control these vital cellular functions.

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Last Updated: Jul 19, 2026

Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
08:32

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Published on: March 2, 2014

High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
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Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
11:28

Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus

Published on: October 7, 2011

Area of Science:

  • Immunology
  • Molecular Biology
  • Cellular Signaling

Background:

  • Interferons (IFNs), including IFN-alpha and IFN-beta, are crucial for host defense against microbial pathogens.
  • IFNs mediate antiviral effects and modulate innate and adaptive immunity.
  • Cell-surface receptor activation initiates IFN signaling cascades, impacting gene expression.

Purpose of the Study:

  • To elucidate the intricate signaling pathways of the Interferon system.
  • To understand how protein-protein interactions dictate biological outcomes in IFN signaling.
  • To investigate the complexity of IFN-mediated signal transduction.

Main Methods:

  • Investigated Interferon (IFN) signaling pathways.
  • Analyzed protein-protein interactions within the IFN system.
  • Utilized collaborative research efforts and laboratory investigations.

Main Results:

  • Gained insights into the complexity of the Interferon system.
  • Demonstrated the role of protein-protein interactions in defining biological function.
  • Provided understanding of IFN-mediated signal transduction circuitry.

Conclusions:

  • Protein-protein interactions are fundamental to the functional elegance of the Interferon system.
  • Further understanding of IFN signaling contributes to host defense mechanisms.
  • The complexity of the IFN system is governed by precise molecular interactions.