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Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
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Tumor-suppressive and promoting function of transforming growth factor beta

LuZhe Sun1

  • 1Department of Cellular and Structural Biology, MC 7762, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA. sunl@uthscsa.edu

Frontiers in Bioscience : a Journal and Virtual Library
|February 24, 2004
PubMed

Insights

Transforming growth factor beta (TGFbeta) plays a dual role in cancer, initially suppressing tumors but later promoting progression and metastasis. Identifying markers for TGFbeta antagonist therapy is crucial.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Transforming growth factor beta (TGFbeta) is a key signaling molecule with complex roles in cancer.
  • Its function shifts from tumor suppression in early stages to tumor promotion in advanced cancers.
  • Tumor cells can develop resistance to TGFbeta's inhibitory effects, altering its signaling pathway.

Purpose of the Study:

  • To explore the dual role of TGFbeta in carcinogenesis.
  • To understand how TGFbeta signaling contributes to tumor progression, invasion, angiogenesis, and metastasis.
  • To investigate the potential of TGFbeta antagonists in cancer therapy.

Main Methods:

  • Review of existing literature on TGFbeta's role in various cancer stages.
  • Analysis of studies investigating TGFbeta signaling in tumor stroma and cells.
  • Examination of research on the efficacy of TGFbeta antagonists in preclinical models.

Main Results:

  • TGFbeta initially inhibits tumor growth via cell cycle arrest and apoptosis.
  • In later stages, TGFbeta promotes invasion, angiogenesis, and metastasis.
  • Antagonizing TGFbeta has shown promise in inhibiting tumor progression, particularly metastasis, in certain models.

Conclusions:

  • TGFbeta's role in cancer is context-dependent, switching from suppressor to promoter.
  • TGFbeta signaling contributes to hallmarks of advanced cancer, including immune evasion and metastasis.
  • Further research is needed to identify biomarkers for predicting TGFbeta antagonist efficacy in cancer treatment.

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