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- W2109197125 abstract "Abstract Purpose: Transforming growth factor-β (TGF-β)-mediated epithelial-to-mesenchymal transition (EMT) has been shown to occur in some cancers; however, the pathway remains controversial and varies with different cancers. In addition, the mechanisms by which TGF-β and the EMT contribute to prostate cancer recurrence are largely unknown. In this study, we elucidated TGF-β-mediated EMT as a predictor of disease recurrence after therapy for prostate cancer, which has not been reported before. Experimental Design: We analyzed TGF-β-induced EMT using nuclear factor-κB (NF-κB) as an intermediate mediator in prostate cancer cell lines. A total of 287 radical prostatectomy specimens were evaluated using immunohistochemistry in a high-throughput tissue microarray analysis. Levels of TGF-β signaling components and EMT-related factors were analyzed using specific antibodies. Results were expressed as the percentage of cancer cells that stained positive for a given antibody and were correlated with disease recurrence rates at a mean of 7 years following radical prostatectomy. Results: In prostate cancer cell lines, TGF-β-induced EMT was mediated by NF-κB signaling. Blockade of NF-κB or TGF-β signaling resulted in abrogation of vimentin expression and inhibition of the invasive capability of these cells. There was high risk of biochemical recurrence associated with tumors that displayed high levels of expression of TGF-β1, vimentin, and NF-κB and low level of cytokeratin 18. This was particularly true for vimentin, which is independent of patients' Gleason score. Conclusions: The detection of NF-κB-mediated TGF-β-induced EMT in primary tumors predicts disease recurrence in prostate cancer patients following radical prostatectomy. The changes in TGF-β signaling and EMT-related factors provide novel molecular markers that may predict prostate cancer outcomes following treatment." @default.
- W2109197125 created "2016-06-24" @default.
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- W2109197125 date "2009-05-15" @default.
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- W2109197125 title "Nuclear Factor-κB-Mediated Transforming Growth Factor-β-Induced Expression of Vimentin Is an Independent Predictor of Biochemical Recurrence after Radical Prostatectomy" @default.
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- W2109197125 doi "https://doi.org/10.1158/1078-0432.ccr-08-1656" @default.
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