miR-760 mediates chemoresistance through inhibition of epithelial mesenchymal transition in breast cancer cells.
Eur Rev Med Pharmacol Sci
; 20(23): 5002-5008, 2016 12.
Article
em En
| MEDLINE
| ID: mdl-27981531
ABSTRACT
OBJECTIVE:
Therapeutic resistance has been a great obstacle for successful treatment of breast cancer. Our study aimed to explore the role of microRNA-760 (miR-760) in chemoresistant breast cancer cells. MATERIALS ANDMETHODS:
Real-time PCR was performed to measure the mRNA expression of miR-760 and Nanog. Western blot was used to determine the protein expression of Nanog and mesenchymal and epithelial markers. Cell viability was measured by the CCK-8 assay.RESULTS:
Our results showed that the expression of miR-760 was significantly reduced the doxorubicin (DOX)-resistant MCF-7/DOX cells and chemoresistant breast cancer tissues. Moreover, up-regulation of miR-760 sensitized breast cancer cells to the anti-cancer agents. The MCF-7/DOX cells exhibited increased expression of Snail, a mesenchymal marker, and decreased levels of E-Cadherin, an epithelial marker. In addition, overexpression of miR-760 suppressed the expression of Nanog, a transcriptional factor involved in chemoresistance, and resulted in the reversal of EMT in breast cancer cells.CONCLUSIONS:
Our study demonstrated that miR-760 modulated chemoresistance through the epithelial-mesenchymal transition in breast cancer cells, providing a potential therapeutic target for treatment of drug-resistant breast cancer.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Resistencia a Medicamentos Antineoplásicos
/
Transição Epitelial-Mesenquimal
Limite:
Female
/
Humans
Idioma:
En
Revista:
Eur Rev Med Pharmacol Sci
Assunto da revista:
FARMACOLOGIA
/
TOXICOLOGIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
China