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2016 ; 7
(16
): 22674-86
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
MicroRNA-630 suppresses tumor metastasis through the TGF-?- miR-630-Slug
signaling pathway and correlates inversely with poor prognosis in hepatocellular
carcinoma
#MMPMID26993767
Chen WX
; Zhang ZG
; Ding ZY
; Liang HF
; Song J
; Tan XL
; Wu JJ
; Li GZ
; Zeng Z
; Zhang BX
; Chen XP
Oncotarget
2016[Apr]; 7
(16
): 22674-86
PMID26993767
show ga
The epithelial-mesenchymal transition (EMT) is the key process that drives tumor
metastasis. Accumulating evidence suggests that the deregulation of some
microRNAs (miRNAs), is implicated in this process. Here, we highlight the
function and molecular mechanism of miR-630 and its potential clinical
application in hepatocellular carcinoma (HCC). First, we identified the clinical
relevance of miR-630 expression in a screen of 97 HCC patient tissues. Patients
with low miR-630 expression had higher recurrence rates and shorter overall
survival than those with high miR-630 expression. Functional studies demonstrated
the overexpression of miR-630 in HCC cells attenuated the EMT phenotype in vitro.
Conversely, inhibition of miR-630 promoted EMT in HCC cells. Mechanistically, our
data revealed that miR-630 suppressed EMT by targeting Slug. Knockdown of Slug
expression reversed miR-630 inhibitor-mediated EMT progression. Furthermore, we
found that the TGF-?-Erk/SP1 and JNK/c-Jun signaling pathways repressed miR-630
transcription through occupying transcription factor binding sites. Ectopic
expression of miR-630 restored the TGF-?-activated EMT process. Taken together,
these findings demonstrate, in HCC cells, miR-630 exerts its tumor-suppressor
functions through the TGF-?-miR-630-Slug axis and provides a potential prognostic
predictor for HCC patients.