MicroRNA-1229 overexpression promotes cell proliferation and tumorigenicity and activates Wnt/ß-catenin signaling in breast cancer.
Oncotarget
; 7(17): 24076-87, 2016 Apr 26.
Article
em En
| MEDLINE
| ID: mdl-26992223
ABSTRACT
Constitutive activation of the Wnt/ß-catenin pathway promotes malignant proliferation and it is inversely correlated with the prognosis of patients with breast cancer. However, mutations in key regulators, such as APC, Axin and ß-catenin, contribute to aberrant activation of the Wnt/ß-catenin signaling pathway in various cancers, but rarely found in breast cancer, suggesting that other mechanisms might be involved in the activation of Wnt/ß-catenin signaling in breast cancer. In the present study, we found that miR-1229 expression was markedly upregulated in breast cancer and associated with poor survival. Overexpressing miR-1229 promoted while inhibiting miR-1229 reduced, proliferation of breast cancer cell proliferation in vitro and tumor growth in vivo. Furthermore, we found that overexpression of miR-1229 activated the Wnt/ß-catenin signaling pathway in breast cancer by directly targeting the multiple important negative regulators of Wnt/ß-catenin signaling, including adenomatous polyposis coli (APC), glycogen synthase kinase-3ß (GSK-3ß), and inhibitor of ß-catenin and T cell factor (ICAT). Taken together, our results suggest that miR-1229 plays an important role in promotion breast cancer progression and may represent a novel therapeutic target in breast cancer.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
6_ODS3_enfermedades_notrasmisibles
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
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Biomarcadores Tumorais
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Transformação Celular Neoplásica
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MicroRNAs
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Proliferação de Células
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Proteínas Wnt
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Beta Catenina
Tipo de estudo:
Prognostic_studies
Limite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Oncotarget
Ano de publicação:
2016
Tipo de documento:
Article