Title |
miR-125b inhibited epithelialal–mesenchymal transition of triple-negative breast cancer by targeting MAP2K7
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Published in |
OncoTargets and therapy, May 2016
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DOI | 10.2147/ott.s102713 |
Pubmed ID | |
Authors |
Liquan Hong, Feng Pan, Huifen Jiang, Lahong Zhang, Yuhua Liu, Chengsong Cai, Chunzhen Hua, Xian Luo, Jinhua Sun, Zhaojun Chen |
Abstract |
MicroRNAs (miRNAs) play important roles in diverse biological processes and are emerging as key regulators of tumorigenesis and tumor progression. Among the differentially expressed miRNAs in breast cancer, miR-125b was revealed to be deregulated and associated with poor prognosis and chemoresistance in triple-negative breast cancer (TNBC), but the mechanism is still unknown. In our study, we showed downregulated expression of miR-125b in TNBC tissues and decreased migration and invasion in miR-125b-expressing Hs578T cells. MAP2K7 was then detected to be a novel target of miR-125b, and downregulation of MAP2K7 by miR-125b was similar to transient knockdown of MAP2K7 which hindered epithelial-mesenchymal transition (EMT) of Hs578T cells. Upregulation of MAP2K7 in miR-125b-overexpressing Hs578T cells partly rescued the migration and invasion suppression of miR-125b. Furthermore, MAP2K7 was overexpressed in TNBC samples compared with normal tissues and negatively correlated with miR-125b expression. In light of these findings, miR-125b emerged as a tumor suppressor in TNBC by targeting MAP2K7 to inhibit EMT. |
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Unknown | 2 | 100% |
Demographic breakdown
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Members of the public | 2 | 100% |
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Unknown | 23 | 100% |
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Researcher | 4 | 17% |
Student > Master | 4 | 17% |
Student > Ph. D. Student | 3 | 13% |
Student > Bachelor | 3 | 13% |
Lecturer | 2 | 9% |
Other | 3 | 13% |
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Arts and Humanities | 1 | 4% |
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