Identification of dysregulated long non-coding RNAs/microRNAs/mRNAs in TNM I stage lung adenocarcinoma
Citations Over TimeTop 11% of 2017 papers
Abstract
// Ziqiang Tian 1 , Shiwang Wen 1 , Yuefeng Zhang 1 , Xinqiang Shi 1 , Yonggang Zhu 1 , Yanzhao Xu 1 , Huilai Lv 1 and Guiying Wang 2 1 Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China 2 The Second Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China Correspondence to: Guiying Wang, email: tizq12@vip.163.com Keywords: TNM I stage, lung adenocarcinoma, long non-coding RNA, microRNA, RNA-sequencing Received: December 29, 2016 Accepted: May 06, 2017 Published: June 16, 2017 ABSTRACT Lung adenocarcinoma (LUAD) is the primary subtype in lung cancer, which is the leading cause of cancer-related death worldwide. This study aimed to investigate the aberrant expression profiling of long non-coding RNA (lncRNA) in TNM I stage (stage I) LUAD. The lncRNA/mRNA/miRNA expression profiling of stage I LUAD and adjacent non-tumor tissues from 4 patients were measured by RNA-sequencing. Total of 175 differentially expressed lncRNAs (DELs), 1321 differentially expressed mRNAs (DEMs) and 94 differentially expressed microRNAs (DEMIs) were identified in stage I LUAD. DEMI-DEM regulatory network consisted of 544 nodes and 1123 edge; miR-200 family members had high connectivity with DEMs. In DEL-DEM co-expression network, CDKN2B-AS1, FENDRR and LINC00312 had the high connectivity with DEMs, which co-expressed with 105, 63 and 61 DEMs, respectively. DEL-DEMI-DEM network depicted the links among DELs, DEMI and DEMs. Identified DEMs were significantly enriched in cell adhesion molecules, focal adhesion and tight junction of Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways; and enriched in cell adhesion, angiogenesis and regulation of cell proliferation of Gene Ontology biological processes. Quantitative real-time polymerase chain reaction results were generally consistent with our bioinformatics analyses. LINC00312 and FENDRR had diagnostic value for LUAD patients in The Cancer Genome Atlas database. Our study might lay the foundation for illumination of pathogenesis of LUAD and identification of potential therapeutic targets and novel diagnosis biomarkers for LUAD patients.
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