title: Increased expression of LncRNA BANCR and its prognostic significance in human hepatocellular carcinoma.
abstract: BACKGROUND
  Long noncoding RNAs (lncRNAs) have been proved to play important roles in the tumorigenesis and development of human hepatocellular carcinoma (HCC). The aim of our study is to investigate the expression and function of BRAF-activated noncoding RNA (BANCR) in HCC.
  
  
  METHODS
  BANCR expression was detected in HCC tissues and cell lines by using quantitative real-time PCR (qRT-PCR). Association between BANCR levels and clinicopathological factors and patient prognosis was also analyzed. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), flow cytometry, and transwell invasion and migration assays were used to investigate the role of BANCR in the regulation of biological behaviors of HCC cells.
  
  
  RESULTS
  BANCR expression was remarkably increased in HCC tissues compared with adjacent noncancerous tissues (P<0.001). BANCR expression in four HCC cell lines was also significantly upregulated (P<0.05). Clinicopathologic analysis revealed that high BANCR expression correlated with high tumor grade, large tumor size, venous infiltration, advanced tumor, node, and metastasis (TNM) stage, and shorter overall survival. Multivariate regression analysis identified BANCR overexpression as an independent unfavorable prognostic factor (relative risk [RR] 4.245; P=0.015) in HCC patients. Moreover, BANCR downregulation in Hep3B cells impaired cell proliferation, promoted cell apoptosis, reduced cell invasion and migration, led to downregulated vimentin, and upregulated E-cadherin protein levels.
  
  
  CONCLUSIONS
  These findings suggested that BANCR may contribute to HCC initiation and progression and would be used as not only a novel prognostic marker but also a potential therapeutic target for this disease.
authors.affiliation: Department of Gastroenterology, Qi-Lu Hospital, Shandong University, Jinan, 250012, Shan Dong Province, People's Republic of China.
authors.forename: Tao
authors.initials: T
authors.lastname: Zhou
authors.affiliation: Department of Gastroenterology, Qi-Lu Hospital, Shandong University, Jinan, 250012, Shan Dong Province, People's Republic of China. docgaoyj@163.com.
authors.forename: Yanjing
authors.initials: Y
authors.lastname: Gao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000235:genetics*; D006528:Carcinoma, Hepatocellular / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000601:surgery; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000601:surgery; D008297:Male; D008875:Middle Aged; D060787:Neoplasm Grading; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D011379:Prognosis; D048493:Proto-Oncogene Proteins B-raf / Q000235:genetics*; D062085:RNA, Long Noncoding; D060888:Real-Time Polymerase Chain Reaction; D016019:Survival Analysis
chemical_list: D014408:Biomarkers, Tumor; D062085:RNA, Long Noncoding; C482119:BRAF protein, human; D048493:Proto-Oncogene Proteins B-raf