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Updated: Mar 21, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
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Downregulation of the TGFβ Pseudoreceptor BAMBI in Non-Small Cell Lung Cancer Enhances TGFβ Signaling and Invasion

Sebastian Marwitz1, Sofia Depner2, Dmytro Dvornikov3

  • 1Pathology of the University Hospital of Lübeck and the Leibniz Research Center Borstel, Borstel, Germany. Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Groβhansdorf, Germany.

Cancer Research
|May 20, 2016
PubMed

Insights

Downregulation of BAMBI, a TGFβ pathway regulator, drives non-small cell lung cancer (NSCLC) invasiveness. Restoring BAMBI reduces tumor growth and metastasis, identifying TGFβ signaling as a potential therapeutic target for NSCLC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Non-small cell lung cancer (NSCLC) presents significant mortality due to early metastasis and late-stage diagnosis.
  • Limited curative options exist for advanced NSCLC, necessitating novel therapeutic targets.
  • Tumor progression in NSCLC is often driven by complex signaling pathways.

Purpose of the Study:

  • To investigate the role of TGFβ signaling and its regulator BAMBI in NSCLC progression.
  • To identify targetable mechanisms contributing to NSCLC invasiveness and metastasis.
  • To evaluate the therapeutic potential of restoring BAMBI expression in NSCLC.

Main Methods:

  • Analysis of TGFβ pathway activation and BAMBI expression in human NSCLC tissues.
  • Assessment of epithelial-to-mesenchymal transition (EMT) markers in NSCLC samples.
  • Investigation of DNA methylation patterns in TGFβ pathway genes.
  • In vitro and in vivo studies involving BAMBI reconstitution in NSCLC cells.

Main Results:

  • Elevated TGFβ signaling and decreased BAMBI expression were observed in NSCLC tissues.
  • Alterations in EMT markers and DNA methylation of TGFβ pathway components were detected.
  • Epigenetic silencing of BAMBI was identified as a key feature of NSCLC.
  • Restoring BAMBI expression inhibited TGFβ-induced EMT, migration, and invasion in vitro, and reduced tumor growth in vivo.

Conclusions:

  • BAMBI downregulation is a critical driver of NSCLC invasiveness and metastasis.
  • TGFβ signaling represents a promising therapeutic target for NSCLC treatment.
  • Restoration of BAMBI function offers a potential strategy to combat NSCLC progression.

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