Back to Search
Start Over
Hypoxia-induced lncRNA EIF3J-AS1 accelerates hepatocellular carcinoma progression via targeting miR-122–5p/CTNND2 axis.
- Source :
-
Biochemical & Biophysical Research Communications . Oct2019, Vol. 518 Issue 2, p239-245. 7p. - Publication Year :
- 2019
-
Abstract
- Long noncoding RNAs (lncRNAs) exert crucial roles in hepatocellular carcinoma (HCC) progression. LncRNA EIF3J-AS1 is recently reported to be highly expressed in HCC and correlates with recurrence-free survival. However, the biological function of EIF3J-AS1 and its underlying molecular mechanism are unexplored yet. In the current study, we demonstrated that EIF3J-AS1 expression was obviously upregulated in HCC tissues compared to adjacent noncancerous tissues. Moreover, the elevated levels of EIF3J-AS1 was detected in four HCC cell lines (HepG2, SMMC-7721, MHCC97H, HCCLM3) compared with the normal hepatic cell line LO2. Notably, the expression of EIF3J-AS1 was correlated with prognostic features including tumor size, vascular invasion and tumor stage. TCGA-LIHC data indicated that the upregulated expression of EIF3J-AS1 predicted poor prognosis of HCC. EIF3J-AS1 knockdown remarkably suppressed the proliferation, migration and invasion of HCC cells. Mechanistically, EIF3J-AS1 inversely regulated miR-122–5p expression via acting as a competing endogenous RNA (ceRNA) in HCC cells. Furthermore, catenin delta 2 (CTNND2) was recognized as a novel target of miR-122–5p. CTNND2 restoration partially reversed EIF3J-AS1 knockdown-induced inhibitory effects on HCC cell proliferation, migration and invasion. Importantly, we found that hypoxia induced EIF3J-AS1 and CTNND2 expression, and led to miR-122–5p downregulation in HCC cells. EIF3J-AS1 knockdown partially abolished hypoxia-induced HCC cell proliferation and mobility. In conclusion, our results provide a new insight into the molecular pathogenesis of HCC, and EIF3J-AS1 may be a potential therapeutic target for HCC. • EIF3J-AS1 expression is obviously up-regulated in HCC. • The elevated expression of EIF3J-AS1 indicates poor prognosis of HCC. • EIF3J-AS1 knockdown inhibits HCC cell proliferation, migration and invasion. • EIF3J-AS1 promotes CTNND2 expression via sponging miR-122–5p. • Hypoxia-induced EIF3J-AS1 facilitates HCC progression via regulating CTNND2. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0006291X
- Volume :
- 518
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Biochemical & Biophysical Research Communications
- Publication Type :
- Academic Journal
- Accession number :
- 138415644
- Full Text :
- https://doi.org/10.1016/j.bbrc.2019.08.039