Increased expression of LncRNA BANCR and its prognostic significance in human hepatocellular carcinoma

World Journal of Surgical Oncology

Research

Tao Zhou¹  Yanjing Gao¹ 

[1] Department of Gastroenterology, Qi-Lu Hospital, Shandong University, 250012, Jinan, Shan Dong Province, People’s Republic of China;

关键词: Long noncoding RNA;    BANCR;    Hepatocellular carcinoma;    Prognosis;   

DOI  :  10.1186/s12957-015-0757-5

 received in 2015-09-09, accepted in 2015-12-30,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundLong 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.MethodsBANCR 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.ResultsBANCR 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.ConclusionsThese 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.

【 授权许可】

CC BY   
© Zhou and Gao. 2016