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Updated: May 31, 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-β signaling in fibrosis.
Anna Biernacka1, Marcin Dobaczewski, Nikolaos G Frangogiannis
1Division of Cardiology, Albert Einstein College of Medicine, Bronx, NY 14016, USA. nikolaos.frangogiannis@einstein.yu.edu
Transforming growth factor beta (TGF-β) drives fibrosis by altering fibroblast behavior. Targeting TGF-β pathways is promising for treating fibrotic diseases, but potential side effects require careful consideration.
Area of Science:
- Cell Biology
- Molecular Biology
- Pathology
Background:
- Transforming growth factor beta (TGF-β) is a key regulator of fibrogenesis.
- TGF-β signaling is activated in fibrotic diseases, promoting fibroblast to myofibroblast differentiation and extracellular matrix deposition.
- Canonical (Smad3) and non-canonical pathways mediate TGF-β's profibrotic effects.
Purpose of the Study:
- To review the role of TGF-β signaling pathways in the fibrotic response.
- To highlight TGF-β as a therapeutic target for fibrotic diseases.
- To discuss potential challenges and side effects associated with TGF-β blockade.
Main Methods:
- Literature review of experimental models and studies on TGF-β signaling in fibrosis.
- Analysis of canonical and Smad-independent pathways involved in fibrogenesis.
- Examination of TGF-β's downstream effectors, such as connective tissue growth factor.
Main Results:
- TGF-β signaling, particularly via the Smad3 pathway, is central to fibrosis.
- Both Smad-dependent and Smad-independent pathways contribute to fibrotic signaling.
- Connective tissue growth factor is a key downstream mediator of TGF-β's profibrotic actions.
Conclusions:
- TGF-β is a critical mediator of fibrosis, making its signaling pathways attractive therapeutic targets.
- The pleiotropic functions of TGF-β necessitate careful evaluation of side effects before clinical blockade.
- Understanding TGF-β pathways is crucial for developing effective anti-fibrotic therapies.
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