| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Recurrence of hormone-unresponsive cancer is a serious problem in prostate and breast cancer. In this study, we demonstrate that Rho-mediated epithelial-mesenchymal transition (EMT) is stimulated not only in endocrine therapy resistance of prostate cancer, but also in chemotherapy resistance of breast cancer. We also demonstrate that, in hormone-responsive cancer cells, cellular senescence and anti-oxidant response are stimulated by hormone ablation. Senescent phenotypes are reduced by treatment of either anti-oxidant reagent of N-Acetyl-L-cysteine or TGF beta. These results suggest that survived cancer cells may utilize various tools such as EMT, cellular senescence, senescence-associated secretory phenotype, and anti-oxidant response, resulting in therapy resistance.
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