miR-1269 promotes metastasis and forms a positive feedback loop with TGF-ß.
Nat Commun
; 6: 6879, 2015 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-25872451
ABSTRACT
As patient survival drops precipitously from early-stage cancers to late-stage and metastatic cancers, microRNAs that promote relapse and metastasis can serve as prognostic and predictive markers as well as therapeutic targets for chemoprevention. Here we show that miR-1269a promotes colorectal cancer (CRC) metastasis and forms a positive feedback loop with TGF-ß signalling. miR-1269a is upregulated in late-stage CRCs, and long-term monitoring of 100 stage II CRC patients revealed that miR-1269a expression in their surgically removed primary tumours is strongly associated with risk of CRC relapse and metastasis. Consistent with clinical observations, miR-1269a significantly increases the ability of CRC cells to invade and metastasize in vivo. TGF-ß activates miR-1269 via Sox4, while miR-1269a enhances TGF-ß signalling by targeting Smad7 and HOXD10, hence forming a positive feedback loop. Our findings suggest that miR-1269a is a potential marker to inform adjuvant chemotherapy decisions for CRC patients and a potential therapeutic target to deter metastasis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Colorretais
/
Fator de Crescimento Transformador beta
/
Retroalimentação Fisiológica
/
MicroRNAs
/
Recidiva Local de Neoplasia
Tipo de estudo:
Prognostic_studies
Limite:
Aged80
Idioma:
En
Revista:
Nat Commun
Ano de publicação:
2015
Tipo de documento:
Article