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2015 ; 8
(4
): 4008-14
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Up-regulation of long non-coding RNA Sox2ot promotes hepatocellular carcinoma
cell metastasis and correlates with poor prognosis
#MMPMID26097588
Shi XM
; Teng F
Int J Clin Exp Pathol
2015[]; 8
(4
): 4008-14
PMID26097588
show ga
BACKGROUND: Long non-coding RNAs (lncRNAs) have been shown to have important
regulatory roles in cancer biology, and the lncRNA Sox2ot is up-regulated in some
tumors. However, the contributions of Sox2ot to hepatocellular carcinoma (HCC)
remain largely unknown. METHODS: In the present study, expression of lncRNA
Sox2ot was evaluated by quantitative real-time PCR in tumor tissues and adjacent
non-tumor tissues in 84 HCC patients. The association of lncRNA Sox2ot expression
with clinicopathological features and the prognosis of HCC patients were also
analyzed. Survival analysis was performed using the Kaplan-Meier method and Cox's
proportional hazards model. Small interfering RNA assay was used to explore the
function of lncRNA Sox2ot on HCC cell migration and invasion. RESULTS: lncRNA
Sox2ot expression level was significantly higher in HCC tissues compared with
adjacent non-tumor tissues (P<0.05). High expression of lncRNA Sox2ot was
associated with histological grade, TNM stage, and vein invasion. The 5-year
overall survival of high lncRNA Sox2ot expression group was significantly shorter
than that of low lncRNA Sox2ot expression group (P<0.05). The multivariate Cox
regression analysis indicated that lncRNA Sox2ot expression was an independent
prognostic factor for overall survival. In addition, the metastasis ability of
HCC cells was significantly decreased by knocking down lncRNA Sox2ot expression.
CONCLUSIONS: The results suggested that lncRNA Sox2ot played crucial roles in
promoting HCC cell migration and invasion, and might represent a novel prognostic
biomarker for HCC.