The downregulated long noncoding RNA DHRS4-AS1 is protumoral and associated with the prognosis of clear cell renal cell carcinoma
Received 8 February 2018
Accepted for publication 12 May 2018
Published 10 September 2018 Volume 2018:11 Pages 5631—5646
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Carlos E Vigil
Changlin Wang,1,* Gang Wang,1,* Zijian Zhang,1,* Zichun Wang,1 Minghua Ren,1 Xiaoxiong Wang,2 Haoming Li,1 Yipeng Yu,1 Jing Liu,1 Licheng Cai,1 Yong Li,3 Daming Zhang,2 Cheng Zhang1
1Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China; 2Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China; 3Department of PET/CT, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
*These authors contributed equally to this work
Background: Long noncoding RNAs (lncRNAs) have been identified as important factors in cancer biology and are deregulated in many cancers. The present study aimed to determine the expression and roles of lncRNA DHRS4-AS1 in the progression of clear cell renal cell carcinoma (ccRCC).
Methods and results: Using high-throughput RNA-sequencing data of ccRCC tumors from the Cancer Genome Atlas project, we identified lncRNA DHRS4-AS1 as significantly associated with ccRCC patients’ overall survival. We confirmed the downregulation of DHRS4-AS1 in ccRCC by assessing its expression levels in a cohort of 52 tumor and paired non-tumor samples. In addition, we found that low DHRS4-AS1 expression was significantly associated with a high tumor node metastasis stage, lymph node metastasis, advanced pathological grade and poor prognosis. Furthermore, DHRS4-AS1 overexpression inhibited the progression of cell cycles of ccRCC in vitro. These data indicate that DHRS4-AS1 functions by preventing the proliferation and invasion, inhibiting the cell cycle progression and promoting the apoptosis of ccRCC cells.
Conclusion: Taken together, our findings identify the role of DHRS4-AS1 as a tumor inhibitor in ccRCC for the first time, demonstrating that DHRS4-AS1 is a potential prognostic biomarker that could potentially be applied in ccRCC therapy.
Keywords: long noncoding RNAs, DHRS4-AS1, clear cell renal cell carcinoma, prognosis
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