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Suppressors of Cytokine Signaling and Hepatocellular Carcinoma

Ryota Masuzaki1, Tatsuo Kanda1, Reina Sasaki1

  • 1Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi, Tokyo 173-8610, Japan.

Cancers
|May 28, 2022
PubMed

Insights

Suppressors of cytokine signaling (SOCS) proteins regulate cell growth and immune responses. This review highlights SOCS proteins as potential therapeutic targets for hepatocellular carcinoma (HCC) and other liver diseases.

Area of Science:

  • Molecular Biology
  • Immunology
  • Hepatology

Background:

  • Cytokines are crucial for cell growth and differentiation, with Suppressors of Cytokine Signaling (SOCS) proteins acting as negative regulators.
  • The SOCS family comprises eight members, each with distinct roles in cellular signaling pathways.
  • SOCS proteins are implicated in regulating cytokine and growth factor signaling in various liver diseases, including viral hepatitis and hepatocellular carcinoma (HCC).

Purpose of the Study:

  • To review recent findings on the role of SOCS family proteins in liver diseases, with a focus on hepatocellular carcinoma (HCC).
  • To explore the potential of SOCS proteins as therapeutic targets for HCC, considering their influence on cell proliferation, differentiation, and immune response.

Main Methods:

  • Literature review summarizing recent research on SOCS proteins in liver diseases and HCC.
  • Analysis of the involvement of specific SOCS proteins (SOCS1, SOCS3, SOCS2) in immune response, liver regeneration, and HCC development.

Main Results:

  • SOCS1 and SOCS3 are involved in immune response and inhibit interferon signaling in viral hepatitis.
  • Decreased SOCS3 expression correlates with advanced HCC stage and poor prognosis; DNA methylation of SOCS1 and SOCS3 is observed in HCC.
  • SOCS2 and SOCS3 are induced early during liver regeneration after partial hepatectomy (PH), suggesting a role in liver repair processes.

Conclusions:

  • SOCS signaling plays a significant role in liver regeneration and is implicated in the pathogenesis of HCC.
  • SOCS proteins represent promising therapeutic targets for HCC, offering potential for modulating cell proliferation, differentiation, and immune responses in the tumor microenvironment.
Keywords:
hepatocellular carcinomaliver regenerationsuppressor of cytokine signaling

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