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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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Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
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Rescue of Recombinant Newcastle Disease Virus from cDNA
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Interferons lambda, new cytokines with antiviral activity.

K Lopušná1, I Režuchová, T Betáková

  • 1Institute of Virology, Slovak Academy of Sciences, Dúbravská cesta 9, 845 05 Bratislava, Slovak Republic.

Acta Virologica
|April 23, 2013
PubMed
Summary
This summary is machine-generated.

Interferon lambda (IFN-λ) subtypes show antiviral activity against key viruses like influenza and herpes. This research explores the effectiveness of IFN-λ1, IFN-λ2, and IFN-λ3 in combating viral infections.

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08:32

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Published on: March 2, 2014

Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • Interferons (IFNs) are crucial cytokines for antiviral defense.
  • Three main types of IFNs (Type I, II, and III) exist, differing in receptor usage and function.
  • Interferon lambda (IFN-λ) is a recently identified group of cytokines with antiviral properties.

Purpose of the Study:

  • To investigate the antiviral efficacy of Interferon lambda (IFN-λ) subtypes.
  • To evaluate the activity of IFN-λ1, IFN-λ2, and IFN-λ3 against medically significant viruses.
  • To understand the role of IFN-λ in antiviral responses.

Main Methods:

  • In vitro and in vivo studies were conducted.
  • The antiviral activities of IFN-λ1, IFN-λ2, and IFN-λ3 were assessed.
  • Viruses tested included influenza viruses, herpes viruses, and lymphocytic choriomeningitis virus.

Main Results:

  • IFN-λ subtypes demonstrated antiviral effects against the tested viruses.
  • Specific data on the potency and spectrum of activity are detailed in the study.
  • The findings highlight the potential of IFN-λ in antiviral therapy.

Conclusions:

  • IFN-λ cytokines are potent mediators of antiviral immunity.
  • IFN-λ1, IFN-λ2, and IFN-λ3 exhibit significant antiviral activities.
  • Further research into IFN-λ is warranted for therapeutic applications.