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Updated: Aug 22, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
Convergence of p53 and TGF-beta signaling networks
Sirio Dupont1, Luca Zacchigna, Maddalena Adorno
1Department of Histology Microbiology and Medical iotechnologies, Section of Histology and Embryology, University of Padua, viale Colombo 3, 35121, Italy.
Abstract:
p53 is a protein with many talents. One of the most fundamental is the ability to act as essential growth checkpoint that protects cells against cellular transformation. p53 does so through the induction of genes leading to growth arrest or apoptosis. Most of the studies focusing on the mechanisms of p53 activity have been performed in cultured cells upon treatment with well-established p53-activating inputs, such as high doses of radiations, DNA-damaging drugs and activated oncogenes. However, how the tumor suppressive functions of p53 become concerted with the extracellular cues arriving at the cell surface during tissue homeostasis, remains largely unknown. Intriguingly, two recent papers have shed new light into this unexplored field, indicating that p53 plays a key role in TGF-beta-induced growth arrest and, unexpectedly, in the developmental effects of TGF-beta in early embryos. Here we review and comment on these findings and on their implications for cancer biology.
Insights
The tumor suppressor protein p53 is crucial for preventing cancer by halting cell growth or triggering cell death. New research reveals its role in transforming growth factor-beta (TGF-β) signaling during development and growth arrest.
Area of Science:
- Molecular Biology
- Cell Biology
- Developmental Biology
Background:
- The protein p53 acts as a critical cell growth checkpoint, preventing cellular transformation through growth arrest or apoptosis.
- Most p53 research uses artificial stimuli like radiation or DNA-damaging drugs, leaving its role in normal tissue homeostasis unclear.
Purpose of the Study:
- To review and comment on recent findings regarding p53's role in extracellular cue-mediated cellular processes.
- To explore the implications of p53's involvement in TGF-β signaling for cancer biology.
Main Methods:
- Review of recent scientific literature and experimental findings.
- Analysis of p53's function in TGF-β-induced growth arrest.
- Examination of p53's role in TGF-β-mediated developmental effects in early embryos.
Main Results:
- p53 plays a significant role in mediating growth arrest induced by transforming growth factor-beta (TGF-β).
- p53 is unexpectedly involved in the developmental functions of TGF-β during early embryogenesis.
Conclusions:
- Recent studies highlight p53's function beyond traditional stress responses, linking it to extracellular signals like TGF-β.
- Understanding p53's role in TGF-β signaling offers new insights into developmental processes and cancer biology.
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