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Long non-coding RNA UCA1 regulates the expression of Snail2 by miR-203 to promote hepatocellular carcinoma progression
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Long non-coding RNA UCA1 regulates the expression of Snail2 by miR-203 to promote hepatocellular carcinoma progression
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Long non-coding RNA UCA1 regulates the expression of Snail2 by miR-203 to promote hepatocellular carcinoma progression
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Journal Article
Long non-coding RNA UCA1 regulates the expression of Snail2 by miR-203 to promote hepatocellular carcinoma progression
2017
Overview
Purpose
Long non-coding RNA (LncRNA) urothelial carcinoma-associated 1 (UCA1) is reported to be dysregulated in hepatocellular carcinoma (HCC) progression. However, the functions of UCA1 in HCC still need further study. The aim is to detect the role of UCA1 involving in HCC cells proliferation and invasion, and epithelial–mesenchymal transition (EMT).
Methods
The quantitative real-time PCR was used to detect the UCA1 and miR-203 expression levels in 60 cases’ HCC tissues and adjacent normal tissues. Western blotting analysis was performed to detect the EMT markers E-cadherin, Vimentin and transcription factor Snail1, Snail2 expression. Luciferase reporter assay, RNA immunoprecipitation (RIP) and pull-down assays were used to evaluate whether miR-203 was a target of UCA1.
Results
Our results showed that UCA1 was markedly upregulated in HCC tissues and higher UCA1 expression in HCC was positively associated with tumor size, vascular invasion and American Joint Committee on Cancer (AJCC) stage (
P
< 0.05). Furthermore, gain-of-function and loss-of-function analysis showed that UCA1 knockdown inhibited HCC cells proliferation and invasion in vitro and xenograft tumour growth in vivo. Moreover, UCA1 overexpression promoted cell epithelial–mesenchymal transition (EMT) in HCC via effectively sponging to miR-203 and thereby activating the expression of transcription factor Snail2.
Conclusions
Our results identified that UCA1/miR-203/Snail2 pathway might involve in HCC progression. Inhibition of UCA1 acted as a promising therapeutic target for HCC patients.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
/ Aged
/ Animals
/ Carcinoma, Hepatocellular - genetics
/ Carcinoma, Hepatocellular - pathology
/ Cell Proliferation - genetics
/ Epithelial-Mesenchymal Transition - genetics
/ Female
/ Gene Expression Regulation, Neoplastic
/ Humans
/ Male
/ Medicine
/ Mice
/ Oncology
/ Original Article – Cancer Research
/ RNA, Long Noncoding - physiology
/ Snail Family Transcription Factors - genetics
/ Tumors
/ Vimentin
