Carcinogenesis, Teratogenesis & Mutagenesis ›› 2019, Vol. 31 ›› Issue (2): 119-126,132.doi: 10.3969/j.issn.1004-616x.2019.02.005

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Expression of lncRNA and its prognostic value in pancreatic cancers

WEI Chao, ZHANG Xiao, GAO Jie   

  1. School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
  • Received:2018-12-19 Revised:2019-02-26 Online:2019-03-30 Published:2019-03-30

Abstract: OBJECTIVE:Using bioinformatics method,the data of pancreatic cancer in Gene Expression Omnibus (GEO) database and The Cancer Genome Atlas (TCGA) database were analyzed to evaluate the differential expression and prognostic value of lncRNA and mRNA in pancreatic cancers.METHODS:Firstly,we annotated the data of pancreatic cancers into GEO database to extract the information on mRNA and lncRNA.By intersecting the mRNA and lncRNA in the chip,we obtained the differentially expressed mRNA and lncRNA.Then,genetic analyses of the differentially expressed mRNA and lncRNA were carried out.At the same time,survival analysis was carried out with the relevant data of pancreatic cancers in the TCGA database.RESULTS:With the gene analyses,we obtained 1 147 differentially expressed mRNAs and 336 differentially expressed IncRNAs,which were reliability related to pancreatic cancer.Through gene ontology analyses and Kyoto encyclopedia of genes and genomes analyses,networks on lncRNA-mRNA co-expression,lncRNA-mRNA-pathways,signal pathways and protein interactions were constructed.The results show that mRNAs and lncRNAs had an important impact on the occurrence and development of pancreatic cancers.Survival analysis revealed that 12 lncRNAs were associated with the prognosis of pancreatic cancer,namely ATP1A1-AS1,CBR3-AS1,CTD-3080P12.3,FAM66D,FAM87A,FLJ38576,LINC00476,LINC00574,LINC01554,PY2,LINC00857,OVOL1-AS1.CONCLUSION:Several LncRNA demonstrated a significant association with the occurrence,development and prognosis of pancreatic cancers.Therefore,they are expected to provide new therapeutic targets and molecular markers for targeted therapy as well as prognosis evaluation of pancreatic cancers.

Key words: pancreatic cancer, lncRNA, mRNA, prognosis evaluation

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