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SOCS: negative regulators of cytokine signaling for immune tolerance

Akihiko Yoshimura1, Minako Ito2, Setsuko Mise-Omata1

  • 1Department of Microbiology and Immunology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo 160-8582, Japan.

International Immunology
|August 20, 2021
PubMed

Insights

Suppressor of cytokine signaling (SOCS) proteins regulate immune responses by controlling Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathways. These proteins are crucial for immune tolerance and are linked to autoimmune diseases and cancer.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Signaling

Background:

  • Cytokines are key for immune communication, often activating Janus kinase/signal transducers and activators of transcription (JAK/STAT) and Ras/ERK pathways.
  • These signaling cascades are critical for gene transcription and cell proliferation but require strict regulation.
  • Suppressor of cytokine signaling (SOCS) proteins are vital negative regulators of JAK/STAT signaling, influencing T cell differentiation and function.

Purpose of the Study:

  • To elucidate the role of SOCS proteins in regulating cytokine signaling and immune responses.
  • To investigate the association of SOCS family members with immune tolerance, autoimmune diseases, allergies, and cancer.
  • To understand SOCS proteins as immune-checkpoint molecules impacting T cell responsiveness.

Main Methods:

  • Analysis of human genetic data to identify associations between SOCS family members and diseases.
  • Investigation of SOCS protein function in T cell differentiation and immune tolerance.
  • Characterization of SOCS proteins as regulators of JAK/STAT and Ras/ERK signaling pathways.

Main Results:

  • SOCS family members are confirmed as key negative regulators of JAK/STAT signaling.
  • Human genetic studies reveal strong links between SOCS proteins and autoimmune diseases, allergies, and tumorigenesis.
  • SOCS proteins function as immune-checkpoint molecules, modulating T cell responses to cytokines.

Conclusions:

  • SOCS proteins are essential regulators of cytokine signaling and immune homeostasis.
  • Dysregulation of SOCS proteins contributes to the pathogenesis of autoimmune diseases, allergies, and cancer.
  • Targeting SOCS proteins may offer therapeutic strategies for immune-related disorders.
Keywords:
JAK kinaseanergyautoimmunityregulatory T cellssystemic lupus erythematosus

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