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      Targeting the Transforming Growth Factor-β Signaling in Cancer Therapy

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          Abstract

          TGF-β pathway is being extensively evaluated as a potential therapeutic target. The transforming growth factor-β (TGF-β) signaling pathway has the dual role in both tumor suppression and tumor promotion. To design cancer therapeutics successfully, it is important to understand TGF-β related functional contexts. This review discusses the molecular mechanism of the TGF-β pathway and describes the different ways of tumor suppression and promotion by TGF-β. In the last part of the review, the data on targeting TGF-β pathway for cancer treatment is assessed. The TGF-β inhibitors in pre-clinical studies, and Phase I and II clinical trials are updated.

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          Most cited references68

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          Epithelial-mesenchymal transitions in development and disease.

          The epithelial to mesenchymal transition (EMT) plays crucial roles in the formation of the body plan and in the differentiation of multiple tissues and organs. EMT also contributes to tissue repair, but it can adversely cause organ fibrosis and promote carcinoma progression through a variety of mechanisms. EMT endows cells with migratory and invasive properties, induces stem cell properties, prevents apoptosis and senescence, and contributes to immunosuppression. Thus, the mesenchymal state is associated with the capacity of cells to migrate to distant organs and maintain stemness, allowing their subsequent differentiation into multiple cell types during development and the initiation of metastasis.
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            How cells read TGF-beta signals.

            Cell proliferation, differentiation and death are controlled by a multitude of cell-cell signals, and loss of this control has devastating consequences. Prominent among these regulatory signals is the transforming growth factor-beta (TGF-beta) family of cytokines, which can trigger a bewildering diversity of responses, depending on the genetic makeup and environment of the target cell. What are the networks of cell-specific molecules that mould the TGF-beta response to each cell's needs?
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              Roles of TGFbeta in metastasis.

              The TGFbeta signaling pathway is conserved from flies to humans and has been shown to regulate such diverse processes as cell proliferation, differentiation, motility, adhesion, organization, and programmed cell death. Both in vitro and in vivo experiments suggest that TGFbeta can utilize these varied programs to promote cancer metastasis through its effects on the tumor microenvironment, enhanced invasive properties, and inhibition of immune cell function. Recent clinical evidence demonstrating a link between TGFbeta signaling and cancer progression is fostering interest in this signaling pathway as a therapeutic target. Anti-TGFbeta therapies are currently being developed and tested in pre-clinical studies. However, targeting TGFbeta carries a substantial risk as this pathway is implicated in multiple homeostatic processes and is also known to have tumor-suppressor functions. Additionally, clinical and experimental results show that TGFbeta has diverse and often conflicting roles in tumor progression even within the same tumor types. The development of TGFbeta inhibitors for clinical use will require a deeper understanding of TGFbeta signaling, its consequences, and the contexts in which it acts.
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                Author and article information

                Journal
                Biomol Ther (Seoul)
                Biomol Ther (Seoul)
                ksp
                Biomolecules & Therapeutics
                The Korean Society of Applied Pharmacology
                1976-9148
                2005-4483
                30 September 2013
                : 21
                : 5
                : 323-331
                Affiliations
                [1 ]College of Pharmacy, Ewha Womans University, Seoul 120-750
                [2 ]Laboratory of Tumor Suppressor, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 406-840, Republic of Korea
                Author notes
                [* ]Corresponding Author E-mail: yysheen@ 123456ewha.ac.kr Tel: +82-2-3277-3028, Fax: +82-2-3277-2851
                Article
                ooomb4-21-323
                10.4062/biomolther.2013.072
                3825194
                24244818
                32a56833-dc2b-422d-9746-7781ab02c5ac
                Copyright ©2013, The Korean Society of Applied Pharmacology

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 12 September 2013
                : 24 September 2013
                Categories
                Articles

                transforming growth factor-β (tgf-β),ew-7197,alk5,breast cancer,metastasis

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