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Updated: May 5, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
Signaling interplay between transforming growth factor-β receptor and PI3K/AKT pathways in cancer
Long Zhang1, Fangfang Zhou, Peter ten Dijke
1Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China; Department of Molecular Cell Biology, Cancer Genomics Centre and Centre for Biomedical Genetics, Leiden University Medical Center, Leiden, The Netherlands.
Abstract:
The transforming growth factor (TGF)-β and phosphoinositide 3-kinase/protein kinase B (PI3K/AKT) signaling pathways are used in cells to control numerous responses, including proliferation, apoptosis, and migration. TGF-β is known for its cytostatic effects in premalignant states and its pro-oncogenic activity in advanced cancers. The pro-cell survival response exerted by growth-factor-mediated activation of PI3K/AKT has been linked to stimulation of tumor formation. Both TGF-β receptor and PI3K/AKT pathways were initially modeled as linear signaling conduits. Although early studies suggested that these two pathways might counteract each other in balancing cell survival, emerging evidence has uncovered multiple modes of intricate signal integration and obligate collaboration in driving cancer progression. These new insights provide the rationale for exploring their dual targeting in cancer.
Insights
The transforming growth factor-beta (TGF-β) and phosphoinositide 3-kinase/protein kinase B (PI3K/AKT) pathways collaborate in cancer progression. Dual targeting of these signaling pathways offers a promising strategy for cancer treatment.
Area of Science:
- Cellular Biology
- Molecular Oncology
- Cancer Signaling
Background:
- Transforming growth factor-beta (TGF-β) exhibits dual roles in cancer, acting cytostatically in early stages and promoting oncogenesis in advanced cancers.
- Phosphoinositide 3-kinase/protein kinase B (PI3K/AKT) signaling promotes cell survival and tumor formation.
- Initially viewed as linear and potentially opposing, the TGF-β receptor and PI3K/AKT pathways are now understood to have complex interactions.
Purpose of the Study:
- To explore the intricate crosstalk and collaborative signaling between the TGF-β and PI3K/AKT pathways.
- To provide a rationale for investigating dual-targeting strategies in cancer therapy.
Main Methods:
- Review and synthesis of existing literature on TGF-β and PI3K/AKT signaling.
- Analysis of experimental evidence detailing pathway interactions and their roles in cancer.
Main Results:
- Emerging evidence reveals complex signal integration and collaboration between TGF-β and PI3K/AKT pathways.
- These pathways, once thought to counteract each other, actively cooperate in driving cancer progression.
Conclusions:
- The intricate interplay between TGF-β and PI3K/AKT signaling is crucial for cancer development.
- Targeting both pathways simultaneously presents a viable therapeutic approach for combating cancer.
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