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2016 ; 39
(2
): 96-102
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miR-101 Inhibiting Cell Proliferation, Migration and Invasion in Hepatocellular
Carcinoma through Downregulating Girdin
#MMPMID26743900
Cao K
; Li J
; Zhao Y
; Wang Q
; Zeng Q
; He S
; Yu L
; Zhou J
; Cao P
Mol Cells
2016[Feb]; 39
(2
): 96-102
PMID26743900
show ga
miR-101 is considered to play an important role in hepato-cellular carcinoma
(HCC), but the underlying molecular mechanism remains to be elucidated. Here, we
aimed to confirm whether Girdin is a target gene of miR-101 and determine the
tumor suppressor of miR-101 through Girdin pathway. In our previous studies, we
firstly found Girdin protein was overexpressed in HCC tissues, and it closely
correlated to tumor size, T stage, TNM stage and Edmondson-Steiner stage of HCC
patients. After specific small interfering RNA of Girdin was transfected into
HepG2 and Huh7.5.1 cells, the proliferation and invasion ability of tumor cells
were significantly inhibited. In this study, we further explored the detailed
molecular mechanism of Girdin in HCC. Interestingly, we found that miR-101
significantly low-expressed in HCC tissues compared with that in matched normal
tissues while Girdin had a relative higher expression, and miR-101 was inversely
correlated with Girdin expression. In addition, after miR-101 transfection, the
proliferation, migration and invasion abilities of HepG2 cells were weakened.
Furthermore, we confirmed that Girdin is a direct target gene of miR-101. Finally
we confirmed Talen-mediated Girdin knockout markedly suppressed cell
proliferation, migration and invasion in HCC while down-regulation of miR-101
significantly restored the inhibitory effect. Our findings suggested that
miR-101/Girdin axis could be a potential application of HCC treatment.