Microarray analysis on the lncRNA expression profile in male hepatocelluar carcinoma patients with chronic hepatitis B virus infection
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Jianjun Niu1,2, Yong Lin3, Pingguo Liu1,2, Yiwen Yu1, Chenghao Su3, Xiaomin Wang1,2
1Zhongshan Hospital, Medical College of Xiamen University, Xiamen, China
2Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Xiamen, China
3Xiamen Center for Disease Control and Prevention, Xiamen, China
Xiaomin Wang, email: firstname.lastname@example.org
Keywords: hepatocellular carcinoma, lncRNA, HBV infection, male, expression profile
Received: July 28, 2016 Accepted: October 04, 2016 Published: October 18, 2016
Long non-coding RNAs are involved with development and progression of cancer, and the advance of microarray technology allows the researchers to investigate the complete expression profile of lncRNA in various kinds of sample. We enrolled 5 male primary HCC cases with chronic HBV infection and the HCC and normal tissues have been obtained during the resection surgery. After total RNA extraction, the lncRNA microarray analysis was conducted to determine the lncRNA and mRNA expression signals. 612 lncRNAs and 1,064 mRNAs were significantly up-regulated in HCC tissue while 656 lncRNAs and 1,532 mRNAs were down-regulated in HCC tissues. Compared with normal tissues, XLOC_007433 (fold change: 12.80) and AC144449.1 (fold change: 27.20) were the most over- and under-expressed lncRNAs in HCC tissues. As for the mRNA, THBS4 (fold change:41.13) and CXCL14 (fold change: 58.03) were the most over- and under-expressed mRNAs in HCC tissues when comparing with their normal counterparts. In total, 4,552 pairs of lncRNA-mRNA were identified and the co-expression network was constructed. Moreover, the gene ontology enrichment analysis showed that the significantly different transcript between HCC and normal tissues were mainly associated with response to wounding, inflammatory response, protein hetrodimerization activity, response to stress which involved with biological process and molecular function. The pathway analysis suggested that the most significant pathways consisted of alcoholism, regulatory RNA pathways and RNA polymerase transcription. Several novel differentially expressed lncRNAs and mRNAs were identified in the present study.
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