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Profile of HBV Integration in the Plasma DNA of Hepatocellular Carcinoma Patients

[ Vol. 20 , Issue. 1 ]

Author(s):

Weiyang Li*, Xiaofang Cui*, Qing Huo, Yanwei Qi, Yuhui Sun, Meihua Tan and Qingsheng Kong*   Pages 61 - 68 ( 8 )

Abstract:


Background: Hepatitis B Viral (HBV) infection is one of the major causes of Hepatocellular Carcinoma (HCC). Mounting evidence had provided that the HBV integration might be a critical contributor of HCC carcinogenesis.

Objective and Methods: To explore the profile of HBV integration in the plasma DNA, the method of next-generation sequencing, HBV capture and bioinformatics had been employed to screen for HBV integration sites in the plasma samples.

Results: In the initial experiment, a total of 87 breakpoints were detected in the 20 plasma samples. The distribution of breakpoints showed that there was significant enrichment of breakpoints in the region of intron. Furthermore, the HBV breakpoints were prone to occur in the region of X protein (1,700-2,000bp) in the plasma samples. The pathway analysis had revealed that the HBV integrations sites were specifically enriched in the cancer pathway.

Conclusion: Altogether, our results had provided direct evidence for the HBV integration in plasma DNA, and they might be potentially useful for future HCC prognosis and diagnosis.

Keywords:

Hepatocellular carcinoma, Plasma, HBV integration, Cell free DNA, HBV genome, Breakpoints.

Affiliation:

Jining Medical University, Jining, Shandong 272067, Jining Medical University, Jining, Shandong 272067, Southern University of Science and Technology, Shenzhen 518055, Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center, Shenzhen 518002, Center for Data Driven Discovery in Biomedicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, BGI College, University of Chinese Academy of Sciences, Shenzhen 518083, Jining Medical University, Jining, Shandong 272067

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