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Published on: October 27, 2020
Transforming Growth Factor-β: An Agent of Change in the Tumor Microenvironment
Christina H Stuelten1, Ying E Zhang1
1Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, United States.
Abstract:
Transforming Growth Factor-β (TGF-β) is a key regulator of embryonic development, adult tissue homeostasis, and lesion repair. In tumors, TGF-β is a potent inhibitor of early stage tumorigenesis and promotes late stage tumor progression and metastasis. Here, we review the roles of TGF-β as well as components of its signaling pathways in tumorigenesis. We will discuss how a core property of TGF-β, namely its ability to change cell differentiation, leads to the transition of epithelial cells, endothelial cells and fibroblasts to a myofibroblastoid phenotype, changes differentiation and polarization of immune cells, and induces metabolic reprogramming of cells, all of which contribute to the progression of epithelial tumors.
Insights
Transforming Growth Factor-β (TGF-β) regulates development and tissue repair. In cancer, TGF-β initially inhibits tumors but later promotes progression and metastasis by altering cell differentiation and metabolism.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- Transforming Growth Factor-β (TGF-β) is crucial for development, tissue repair, and homeostasis.
- TGF-β exhibits dual roles in tumorigenesis: inhibiting early stages and promoting late-stage progression and metastasis.
Purpose of the Study:
- To review the multifaceted roles of TGF-β and its signaling pathways in tumorigenesis.
- To elucidate how TGF-β signaling drives tumor progression through cellular and metabolic reprogramming.
Main Methods:
- Literature review of studies on TGF-β signaling in cancer.
- Analysis of TGF-β's impact on cell differentiation, immune cell polarization, and metabolic reprogramming.
Main Results:
- TGF-β signaling induces a myofibroblastoid phenotype in epithelial cells, endothelial cells, and fibroblasts.
- TGF-β alters immune cell differentiation and polarization, favoring tumor progression.
- TGF-β promotes metabolic reprogramming in cancer cells, supporting tumor growth and metastasis.
Conclusions:
- TGF-β signaling is a critical driver of epithelial tumor progression and metastasis.
- Targeting TGF-β pathways may offer therapeutic strategies for epithelial cancers.
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