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  • Title: YWHAE promotes proliferation, metastasis, and chemoresistance in breast cancer cells.
    Author: Yang YF, Lee YC, Wang YY, Wang CH, Hou MF, Yuan SF.
    Journal: Kaohsiung J Med Sci; 2019 Jul; 35(7):408-416. PubMed ID: 31001932.
    Abstract:
    Breast cancer is the most common female-specific malignancy in Taiwan and developed countries worldwide, and its incidence continues to grow. 14-3-3ε (YWHAE), which belong to 14-3-3 family, it has been reported up-regulated in breast cancer tissues. However, the clinical implication and function of YWHAE in breast cancer remains unclear. In this study, we investigated the prognostic value of the YWHAE in human breast cancer. Immunohistochemistry was used to analyze YWHAE expression in breast cancer tissues. Cell model was applied to examine the functions of YWHAE. The chemotherapeutic agents were used to evaluate the effect of YWHAE in breast cancer cell lines. YWHAE expression was associated with tumor size, lymph node metastasis, and poor patient survival in patients with breast cancer. YWHAE overexpression significantly increased the proliferation, migration, and invasion abilities of breast cancer cells. Knockdown of YWHAE expression reduced the expression of Snail and Twist in breast cancer cells. We also found that YWHAE was responsible for the resistance of breast cancer cells to chemotherapeutic agents, and knockdown of YWHAE enhanced sensitivity to multiple chemotherapeutic agents in breast cancer cells. Taken together, our findings indicated that YWHAE promoted cancer progression and chemoresistance in breast cancer cells and can be a potential therapeutic target for breast cancer.
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