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Related Experiment Video

Updated: Mar 6, 2026

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance
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Exercising Restraint.

Stuart J D Neil1

  • 1Department of Infectious Disease, Faculty of Life Science and Medicine, King's College London, Guy's Hospital, London SE1 9RT, UK.

Cell Host & Microbe
|March 11, 2017
PubMed
Summary

An interferon-induced antiviral activity was found to inhibit enveloped virus release by tethering them to infected cells. This discovery led to the identification of tetherin, a key antiviral protein.

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Interferons are crucial cytokines in the innate immune response against viral infections.
  • Antiviral activities often target specific stages of the viral life cycle, such as replication or release.
  • Understanding viral release mechanisms is critical for developing new antiviral strategies.

Purpose of the Study:

  • To recount the discovery of an interferon-induced antiviral mechanism.
  • To explain the process leading to the identification of tetherin.
  • To highlight the role of tethering in inhibiting viral release.

Main Methods:

  • Observation of viral particle interaction with the plasma membrane of infected cells.
  • Analysis of interferon-induced cellular activities impacting viral egress.

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  • Characterization of the molecular mechanism responsible for viral tethering.

    • Main Results:

    • An interferon-induced antiviral factor was identified that prevents the release of enveloped viruses.
    • This factor functions by tethering newly formed virions to the surface of infected host cells.
    • The observed phenomenon directly led to the discovery and characterization of tetherin.

    Conclusions:

    • Tetherin is a potent antiviral protein that restricts the release of a broad range of enveloped viruses.
    • The mechanism of viral tethering represents a significant host-pathogen interaction in innate immunity.
    • This discovery has implications for understanding viral pathogenesis and developing novel therapeutics.