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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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TGF-beta and cancer

Brian Bierie1, Harold L Moses

  • 1Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA. brian.bierie@vanderbilt.edu

Cytokine & Growth Factor Reviews
|November 18, 2005
PubMed

Insights

Transforming growth factor-beta (TGF-beta) signaling impacts cancer initiation and progression. While initially a tumor suppressor, TGF-beta becomes a tumor promoter in later stages, highlighting its complex role in cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Signaling

Background:

  • Transforming growth factor-beta (TGF-beta) signaling is crucial in regulating tumorigenesis.
  • TGF-beta's role in human cancer is complex, acting as a tumor suppressor early in progression and a promoter later.
  • While epithelial cell-autonomous roles have been studied, TGF-beta also mediates critical stromal-epithelial interactions.

Purpose of the Study:

  • To elucidate the multifaceted roles of TGF-beta signaling in cancer development.
  • To explore the impact of TGF-beta on both epithelial and stromal compartments during tumorigenesis.
  • To understand the complex interplay of TGF-beta in carcinoma initiation, progression, and metastasis.

Main Methods:

  • Review of current literature and experimental evidence on TGF-beta signaling in cancer.
  • Analysis of TGF-beta's dual role as a tumor suppressor and promoter.
  • Investigation of TGF-beta's effects on stromal-epithelial interactions and fibroblast autonomous functions.

Main Results:

  • TGF-beta signaling pathways are frequently altered during human cancer progression.
  • TGF-beta exhibits context-dependent functions, acting as a suppressor or promoter based on the stage of cancer.
  • Stromal cells, particularly fibroblasts, are significantly influenced by TGF-beta, contributing to cancer regulation.

Conclusions:

  • TGF-beta is a potent regulator of carcinoma initiation, progression, and metastasis.
  • Interdependent interactions involving TGF-beta in both epithelial and stromal compartments are key to cancer regulation.
  • Understanding these complex TGF-beta-mediated interactions is vital for advancing cancer therapies.

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