Related Experiment Video

Updated: Aug 8, 2026

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

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

Published on: March 24, 2015

The interferon gamma (IFN-gamma) receptor: a paradigm for the multichain cytokine receptor

S Pestka1, S V Kotenko, G Muthukumaran

  • 1UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.

Cytokine & Growth Factor Reviews
|February 14, 1998
PubMed

Insights

The interferon gamma (IFN-gamma) receptor complex, composed of IFN-gammaR1 and IFN-gammaR2, was detailed. Its role in signal transduction, including kinase activation and transcription factor phosphorylation, is now understood.

Area of Science:

  • Immunology
  • Cell Signaling
  • Molecular Biology

Background:

  • Interferon gamma (IFN-gamma) is a crucial cytokine involved in immune responses.
  • Understanding the IFN-gamma receptor's mechanism is key to deciphering its biological functions.

Purpose of the Study:

  • To delineate the mechanism of IFN-gamma action and signal transduction.
  • To detail the structure and function of the IFN-gamma receptor complex.

Main Methods:

  • Purification and cloning of IFN-gamma receptor chains (IFN-gammaR1 and IFN-gammaR2).
  • Analysis of signal transduction events following IFN-gamma binding.

Main Results:

  • The IFN-gamma receptor complex consists of ligand-binding (IFN-gammaR1) and accessory (IFN-gammaR2) chains.
  • IFN-gamma binding induces receptor subunit oligomerization, activating Jak1/Jak2 kinases.
  • This leads to phosphorylation and activation of Stat1alpha, a latent transcriptional factor.

Conclusions:

  • The IFN-gamma receptor complex's mechanism of action has been elucidated.
  • This complex serves as a foundational model for understanding class II cytokine receptors.
  • Detailed knowledge of IFN-gamma signaling pathways opens avenues for therapeutic interventions.

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