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Arch Biochem Biophys ; 657: 23-30, 2018 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-30222949

RESUMO

microRNA (miR)-141-3p has context-dependent effects on tumor progression. In this study, we attempted to explore the expression and function of miR-141-3p in cervical cancer. We found that miR-141-3p expression was significantly increased in cervical cancer specimens relative to normal cervical tissues. Moreover, miR-141-3p levels were associated with tumor size and lymph node metastasis status. Ectopic expression of miR-141-3p significantly increased cervical cancer cell proliferation, colony formation, invasion, and epithelial to mesenchymal transition, whereas depletion of miR-141-3p suppressed cervical cancer cell proliferation and invasion. FOXA2 was identified to be a target of miR-141-3p. Overexpression of miR-141-3p led to a marked inhibition of endogenous FOXA2 in cervical cancer cells. FOXA2 silencing phenocopied the effects of miR-141-3p overexpression on cervical cancer cell proliferation and invasion. Enforced expression of FOXA2 blocked the effects of miR-141-3p on cervical cancer cell proliferation and invasion. miR-141-3p overexpression significantly accelerated the growth of xenograft tumors, which was accompanied by a striking reduction in FOXA2 expression. miR-141-3p acts as an oncogene in cervical cancer largely through repression of FOXA2. Targeting miR-141-3p may represent a potential therapeutic strategy for cervical cancer.


Assuntos
Carcinogênese/genética , Fator 3-beta Nuclear de Hepatócito/genética , MicroRNAs/genética , Neoplasias do Colo do Útero/genética , Adulto , Idoso , Animais , Linhagem Celular Tumoral , Proliferação de Células/genética , Regulação para Baixo , Transição Epitelial-Mesenquimal/genética , Feminino , Regulação Neoplásica da Expressão Gênica , Técnicas de Silenciamento de Genes , Humanos , Camundongos Endogâmicos BALB C , Pessoa de Meia-Idade , Invasividade Neoplásica/genética , Regulação para Cima , Neoplasias do Colo do Útero/patologia
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