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Updated: Aug 15, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
[The role of TGF-beta in cell cycle regulation]
Liliana Stalińska1, Tomasz Ferenc
1Zakład Biologii i Genetyki Uniwersytetu Medycznego, 90-647 Łódź. lstalinska@poczta.fm
Abstract:
TGFbeta is a multifunctional protein which affects many proteins taking part in cell cycle regulation and, thanks to this, it influences cell growth and differentiation. TGFbeta can stimulate the proliferation of mesenchymal cells, but it can also act as a growth-inhibitory factor for epithelial, lymphatic, hematopoetic, and endothelial cells. TGFbeta may also regulate cell entry to the apoptosis pathway. TGFbeta plays an important role in angiogenesis, the stimulation of extracellular matrix synthesis, including collagen I, as well as in tissue repair and healing processes. Additionally, TGFbeta induces epithelial to mesenchymal transition in epithelial cell phenotypes. TGFbeta transmits signals through transmembrane Ser-Thr kinase receptors that directly regulate the intracellular Smad pathway. Smad proteins are a unique family of signal transduction molecules that can transmit signals directly from cell surface receptors by interacting with DNA binding partners as well as with transcriptional coactivators and corepressors. Abnormalities in TGFbeta expression are very common in many disease processes including tumors. Mutations in the genes for TGFbeta, its receptors, or intracellular signaling molecules associated with TGFbeta are also important in the pathogenesis of disease, particularly cancer.
Insights
Transforming growth factor-beta (TGFbeta) is a key regulator of cell growth, differentiation, and tissue repair. Dysregulation of TGFbeta signaling is implicated in various diseases, notably cancer.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Context:
- Transforming growth factor-beta (TGFbeta) is a pleiotropic cytokine with diverse roles in cellular processes.
- It influences cell proliferation, differentiation, apoptosis, and extracellular matrix production.
- TGFbeta signaling is mediated by transmembrane Ser-Thr kinase receptors and the intracellular Smad pathway.
Purpose:
- To summarize the multifaceted roles of TGFbeta in cellular functions.
- To highlight the importance of TGFbeta signaling in physiological and pathological processes.
- To underscore the link between TGFbeta pathway abnormalities and disease, particularly cancer.
Summary:
- TGFbeta regulates cell cycle, growth, differentiation, apoptosis, angiogenesis, and epithelial-mesenchymal transition.
- It signals via Ser-Thr kinase receptors to the Smad pathway, involving DNA-binding partners and transcriptional co-regulators.
- Abnormal TGFbeta expression and mutations in its pathway are common in diseases, especially cancer.
Impact:
- Understanding TGFbeta's functions is crucial for developing therapeutic strategies for diseases involving aberrant cell growth and tissue remodeling.
- The TGFbeta pathway represents a significant target for cancer therapy due to its frequent dysregulation.
- Further research into TGFbeta signaling can elucidate mechanisms of tissue repair and disease pathogenesis.
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