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Escaping from the TGFbeta anti-proliferative control
1Institució Catalana de Recerca i Estudis Avançats (ICREA), Medical Oncology Program Vall d'Hebron University Hospital Research Institute, Barcelona, Spain. jseoane@ivr.vhebron.net
Abstract:
Transforming growth factor-beta (TGFbeta) has a crucial role in tissue homeostasis and disruption of the TGFbeta pathway has been implicated in many human diseases including cancer. As a potent inhibitor of epithelial cell proliferation, TGFbeta is a tumor suppressor. Tumor cells evade the antitumoral effect of TGFbeta, either by acquiring somatic mutations that blunt TGFbeta signaling or by selectively preventing the cytostatic responses to TGFbeta. During tumor progression, TGFbeta not only loses the anti-proliferative response but can also become an oncogenic factor. Recent work has provided insights into the specific molecular mechanisms involved in the loss of the TGFbeta anti-proliferative response. This review is an overview of the mechanisms that lead to the impairment of the tumor-suppressive function of TGFbeta in cancer. The understanding of how the TGFbeta signal is disrupted in cancer might facilitate the design and development of rational and successful therapeutic strategies.
Insights
Transforming growth factor-beta (TGFbeta) normally suppresses tumors by inhibiting cell growth. Cancer cells develop ways to block TGFbeta signaling, allowing tumors to grow and potentially making TGFbeta an oncogenic factor.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Transforming growth factor-beta (TGFbeta) is vital for tissue balance and acts as a tumor suppressor by inhibiting epithelial cell proliferation.
- Disruption of the TGFbeta pathway is linked to numerous human diseases, particularly cancer.
Purpose of the Study:
- To review the molecular mechanisms underlying the loss of TGFbeta's tumor-suppressive function in cancer.
- To provide insights into how cancer cells evade TGFbeta's anti-proliferative effects.
Main Methods:
- This review synthesizes recent research findings.
- Analysis of molecular mechanisms of TGFbeta pathway disruption in cancer.
Main Results:
- Cancer cells evade TGFbeta's tumor-suppressive effects through somatic mutations or by blocking cytostatic responses.
- During tumor progression, TGFbeta can transition from a tumor suppressor to an oncogenic factor.
Conclusions:
- Understanding the mechanisms of TGFbeta pathway disruption is crucial for developing targeted cancer therapies.
- Identifying how TGFbeta signaling is impaired can guide the design of effective therapeutic strategies against cancer.
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