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Updated: Mar 19, 2026

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Unexpected oncosuppressive role for STAT3 in KRAS-induced lung tumorigenesis

Beatrice Grabner1, Herwig P Moll2, Emilio Casanova3

  • 1Ludwig Boltzmann Institute for Cancer Research (LBI-CR) , Vienna, Austria.

Molecular & Cellular Oncology
|June 18, 2016
PubMed

Insights

Signal transducer and activator of transcription 3 (STAT3) is usually a cancer target, but we found it suppresses tumors in KRAS-driven lung cancer. These findings challenge its role and offer new therapeutic insights.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Signal transducer and activator of transcription 3 (STAT3) is implicated in various diseases.
  • STAT3 is a recognized therapeutic target for solid tumors, including lung cancer.

Purpose of the Study:

  • To discuss the newly discovered tumor-suppressive role of STAT3.
  • To explore the implications of STAT3's function in KRAS-driven lung cancer.

Main Methods:

  • Review of recent findings on STAT3.
  • Analysis of STAT3's role in KRAS-driven lung cancer pathogenesis.

Main Results:

  • STAT3 exhibits a tumor-suppressive function in KRAS-driven lung cancer.
  • This contradicts the conventional view of STAT3 as a universal oncogene.

Conclusions:

  • The role of STAT3 is context-dependent, particularly in KRAS-driven lung cancer.
  • These findings necessitate a re-evaluation of STAT3 as a therapeutic target in this specific cancer type.

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