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Updated: Feb 3, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
TGF-beta signaling and its targeted therapy in gastrointestinal cancers
Jovana Ranko Gotovac1,2, Kenji Mark Fujihara1,2, Wayne Allen Phillips1,2,3
1Division of Cancer Research, Peter MacCallum Cancer Centre, Parkville, Victoria 3010, Australia.
Abstract:
The transforming growth factor β (TGFβ) signaling pathway governs physiological homeostasis in the gastrointestinal system and its deregulation can lead to a diverse range of human pathologies including juvenile polyposis syndrome and tumor initiation, progression, and metastasis. In gastrointestinal malignancies, tumor cells evade the known tumor suppressive effects of TGFβ signaling through frequent inactivation of the pathway. Paradoxically, tumor cells utilize TGFβ-mediated regulation of epithelial-mesenchymal transition and immunomodulation to facilitate the invasive and migratory phenotype of gastrointestinal cancers and avoid immunosurveillance. The dichotomous role of TGFβ as both a tumor suppressor and tumor promoter has highly challenged research efforts to specifically target TGFβ signaling as a cancer therapy. The current preclinical approach is to inhibit TGFβ-mediated generation of a favorable microenvironment for tumor growth, invasion, and metastasis. Here, we overview the alterations of TGFβ signaling and its fundamental biological relevance in gastrointestinal tumorigenesis. We further discuss future perspectives for efficacious molecular targeted treatment of contextual TGFβ tumor-promoting effects in gastrointestinal cancers.
Insights
Transforming growth factor β (TGFβ) signaling is crucial for gastrointestinal health but its dysregulation drives cancer. Tumor cells paradoxically use TGFβ to promote invasion and metastasis, challenging targeted therapies.
Area of Science:
- Gastroenterology
- Oncology
- Molecular Biology
Background:
- The transforming growth factor β (TGFβ) signaling pathway is vital for gastrointestinal homeostasis.
- Deregulation of TGFβ signaling is implicated in juvenile polyposis syndrome and gastrointestinal cancers.
- Tumor cells frequently inactivate TGFβ signaling to evade its tumor-suppressive functions.
Purpose of the Study:
- To review alterations in TGFβ signaling in gastrointestinal tumorigenesis.
- To discuss the dual role of TGFβ in cancer progression.
- To explore future therapeutic strategies targeting TGFβ in gastrointestinal cancers.
Main Methods:
- Literature review of TGFβ signaling in gastrointestinal cancers.
- Analysis of TGFβ's role in tumor initiation, progression, and metastasis.
- Discussion of preclinical approaches inhibiting TGFβ-mediated pro-tumorigenic effects.
Main Results:
- TGFβ acts as both a tumor suppressor and promoter in gastrointestinal malignancies.
- Tumor cells exploit TGFβ for epithelial-mesenchymal transition and immune evasion.
- Inhibition of TGFβ-induced microenvironments is a current therapeutic strategy.
Conclusions:
- Understanding TGFβ's dichotomous role is key to developing targeted therapies.
- Targeting contextual TGFβ tumor-promoting effects offers future treatment perspectives.
- Further research is needed for efficacious molecular targeted treatments in gastrointestinal cancers.
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