Global expression profiling of metabolic pathway‐related lncRNAs in human gastric cancer and the identification of RP11‐555H23.1 as a new diagnostic biomarker. Issue 2 (15th October 2018)

• Record Type: Journal Article
• Authors: Mo, Xiaoyan; Wu, Yuanyuan; Chen, Li; Zhai, Ming; Gao, Zhengdong; Hu, Kainan; Guo, Junming
• Is Part Of: Journal of clinical laboratory analysis. Volume 33:Issue 2(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-10-15
• Subjects: biomarker -- gastric cancer -- long noncoding RNA -- metabolic pathway -- RP11‐555H23.1; Diagnosis, Laboratory -- Periodicals; Medical laboratory technology -- Periodicals; 616
• DOI: 10.1002/jcla.22692
• Languages: English
• ISSNs: 0887-8013

Abstract

Abstract : Background: Long noncoding RNAs (lncRNAs) have roles in regulating metabolism; however, the global expression profile of metabolic pathway‐associated lncRNAs in gastric cancer is unknown. The purpose of our study was to examine metabolic pathway‐related lncRNAs in gastric cancer and their possible diagnostic values. Methods: Differential expression patterns of metabolic pathway‐related lncRNAs between gastric cancer and paired nontumor tissues were detected using metabolic pathway‐associated lncRNA microarrays. The expression of RP11‐555H23.1, one representative metabolic pathway‐associated lncRNA, was validated using quantitative real‐time reverse transcription‐polymerase chain reaction (qRT‐PCR). The associations between RP11‐55H23.1 expression and the clinicopathological features of gastric cancer patients were analyzed. A receiver operating characteristic (ROC) curve was further established. Results: A total of 114 differentially expressed metabolic pathway‐associated lncRNAs (fold change >2, P < 0.05) between cancer and nontumor tissues were found (GEO No. GSE96856). Among them, TUG1, RP11‐555H23.1, RP1‐257I20.13, UGP2, GCSHP3, and XLOC_000889 lncRNAs were downregulated more than sixfold in gastric cancer tissues. In contrast, RP11‐605F14.2, TBC1D3P5, BC130595, LINC00475, RP11‐19P22.6, BC080653, XLOC_004923, AFAP1‐AS1, EPB49, and RP11‐296I10.3 lncRNAs were upregulated more than sixfold in gastric cancer tissues. We further demonstrated that RP11‐555H23.1 expression was significantly correlated with TNM stage ( P = 0.038). The area under the ROC curve (AUC) was 0.65, and the specificity and sensitivity were 62% and 81%, respectively. Conclusions: Metabolic pathway‐associated lncRNAs play an important role in the occurrence of gastric cancer, and metabolic pathway‐associated lncRNAs, such as RP11‐555H23.1, may represent novel biomarkers of gastric cancer.