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TGFbeta, a potent regulator of tumor microenvironment and host immune response, implication for therapy

L Yang1

  • 1Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20876-4258, USA. yangl@mail.nih.gov

Current Molecular Medicine
|May 12, 2010
PubMed

Insights

Transforming growth factor beta (TGF-β) signaling impacts cancer, acting as both a tumor suppressor and promoter. Understanding its dual role is key for developing effective TGF-β antagonism therapies.

Area of Science:

  • Oncology
  • Immunology
  • Cell Biology

Background:

  • Transforming growth factor beta (TGF-β) signaling pathways are frequently altered in human cancers.
  • TGF-β plays a complex role in tumor initiation and progression, acting as both a tumor suppressor and promoter.
  • Current therapeutic strategies target TGF-β signaling, but challenges remain in understanding its functional switch.

Purpose of the Study:

  • To elucidate the mechanisms by which TGF-β switches its function in cancer.
  • To investigate TGF-β's role in regulating the tumor microenvironment and immune surveillance.
  • To identify potential biomarkers for TGF-β antagonism therapy.

Main Methods:

  • Review of recent studies on TGF-β signaling in cancer.
  • Analysis of TGF-β's impact on inflammatory cell and cancer-associated fibroblast infiltration.
  • Evaluation of TGF-β's systemic immune suppressive effects.

Main Results:

  • TGF-β regulates inflammatory cell and cancer-associated fibroblast infiltration into the tumor microenvironment.
  • TGF-β mediates systemic immune suppression, inhibiting anti-tumor immune responses.
  • Neutralizing TGF-β in preclinical models enhances CD8+ T-cell and natural killer cell activity.

Conclusions:

  • Understanding TGF-β's dual role is critical for successful antagonism therapy.
  • TGF-β signaling influences the tumor microenvironment and host immune surveillance.
  • New insights may guide patient selection and biomarker development for TGF-β-targeted therapies.

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