Affiliation:
1. Naval Medical University
Abstract
Abstract
Long non-coding RNAs (lncRNAs) can directly or indirectly regulate gene expression through interacting with microRNAs (miRNAs). Competitive Endogenous RNAs (ceRNAs) render the roles of lncRNAs more complicated in the process of tumor occurrence and progression. However, the prognostic value of lncRNAs as potential biomarkers and their functional roles as ceRNAs have not been clearly described for lung adenocarcinoma (LUAC). In the present study, the aberrant expression profiles of lncRNAs and miRNAs were analyzed at cBioPortal by interrogating LUAD dataset from The Cancer Genome Atlas (TCGA) database with 517 tissue samples. A total of 92 lncRNAs and 125 miRNAs with highly genetic alterations were identified. Further bioinformatics analysis was performed to construct a LUAD-related lncRNA-miRNA-mRNA ceRNA network, which included 24 highly altered lncRNAs, 21 miRNAs and 142 mRNAs. Some key lncRNAs in this network were subsequently identified as LUAD prognosis-related, and of those, LINC01600 and CASC15 both performed the potential prognostic characteristics with LUAD regarding OS and recurrence. Comprehensive analysis indicated that the expression of LINC01600 was significantly associated with KRAS mutation and lymph node metastasis, and CASC15 and LINC01600 were significantly tended towards co-occurrence, which may be due to the similarity of genes co-expressed by these two lncRNAs. Our findings provided novel insight into better understanding of ceRNA regulatory mechanisms in the pathogenesis of LUAD and facilitated the identification of potential biomarkers for prognosis.
Publisher
Research Square Platform LLC
Reference45 articles.
1. Wild CP, Weiderpass E, Stewart BW, editors (2020). World Cancer Report: Cancer Research for Cancer Prevention. Lyon, France: International Agency for Research on Cancer. Available from: http://publications.iarc.fr/586.
2. Comprehensive molecular profiling of lung adenocarcinoma;Cancer Genome Atlas Research, N;Nature,2014
3. Genomic and transcriptional alterations in lung adenocarcinoma in relation to EGFR and KRAS mutation status;Planck M;PLoS ONE,2013
4. p53: a frequent target for genetic abnormalities in lung cancer;Takahashi T;Science,1989
5. Genomic alterations in lung adenocarcinoma;Devarakonda S;Lancet Oncol,2015