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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
Published on: October 27, 2020
Regulation of the TGF-β pathway by deubiquitinases in cancer
Sijia Liu1, Miriam de Boeck1, Hans van Dam1
1Department of Molecular Cell Biology and Cancer Genomics Centre Netherlands, Leiden University Medical Centre, Leiden, The Netherlands.
Abstract:
The transforming growth factor-β (TGF-β) pathway regulates diverse cellular processes. It signals via serine/threonine kinase receptors and intracellular Smad and non-Smad effector proteins. In cancer cells, aberrant TGF-β signalling can lead to loss of growth inhibition and an increase in invasion, epithelial-to-mesenchymal transition (EMT) and metastasis. Therapeutic targeting of the pro-oncogenic TGF-β responses is currently being explored as a potential therapy against certain invasive and metastatic cancer types. The ubiquitin post-translational regulation system is emerging as a key regulatory mechanism for the control of TGF-β pathway components. In this review, we focus on the role of deubiquitinases (DUBs), which counteract the activity of E3 ubiquitin ligases. We will discuss the mechanisms by which specific DUBs control Smad and non-Smad TGF-β signalling routes, and how perturbation of the expression and function of DUBs contributes to misregulation of TGF-β signalling in cancer.
Insights
Deubiquitinases (DUBs) regulate the transforming growth factor-β (TGF-β) pathway. Dysfunctional DUBs disrupt TGF-β signaling, promoting cancer progression and metastasis, highlighting DUBs as potential therapeutic targets.
Area of Science:
- Molecular Biology
- Cellular Signaling
- Cancer Biology
Background:
- The transforming growth factor-β (TGF-β) pathway is crucial for cellular functions.
- Aberrant TGF-β signaling in cancer drives invasion, metastasis, and epithelial-to-mesenchymal transition (EMT).
- Targeting pro-oncogenic TGF-β responses is a developing cancer therapy strategy.
Purpose of the Study:
- To review the role of deubiquitinases (DUBs) in regulating TGF-β signaling.
- To explore how DUBs control Smad and non-Smad TGF-β pathways.
- To understand DUBs' contribution to TGF-β misregulation in cancer.
Main Methods:
- Literature review focusing on deubiquitinases (DUBs).
- Analysis of DUBs' mechanisms in controlling TGF-β pathway components.
- Examination of DUBs' role in cancer-associated TGF-β dysregulation.
Main Results:
- Deubiquitinases (DUBs) are key regulators of TGF-β pathway components via the ubiquitin system.
- Specific DUBs modulate both Smad and non-Smad signaling arms of the TGF-β pathway.
- Altered DUB expression or function leads to TGF-β pathway misregulation in cancer.
Conclusions:
- Deubiquitinases (DUBs) play a critical role in controlling TGF-β signaling.
- DUBs are implicated in the development and progression of various cancers.
- Targeting DUBs offers a promising avenue for cancer therapy by modulating TGF-β responses.
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