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  • Title: The full-length DNA sequence of Epstein Barr virus from a human gastric carcinoma cell line, SNU-719.
    Author: Song KA, Yang SD, Hwang J, Kim JI, Kang MS.
    Journal: Virus Genes; 2015 Dec; 51(3):329-37. PubMed ID: 26459384.
    Abstract:
    The consistent presence of Epstein-Barr virus (EBV) in malignant cells of EBV-associated gastric carcinoma (EBVaGC) suggests it plays an important role during the development of EBVaGC. However, the entire genomic sequence of EBV from EBVaGC has yet to be determined. This study first determined, annotated, and analyzed the full genomic sequence of EBV from the naturally infected gastric carcinoma cell line SNU-719 using next-generation sequencing and comparative analyses. In consistent with the notion that EBV sequence isolates better reflect their geographic area than tissue origin, the SNU-719 EBV (named as GC1) was categorized as an East Asian type I EBV. Compared with the prototype B95.8 sequence, SNU-719 EBV contained 1372 variations, with 937 and 435 within coding and non-coding regions, respectively. Of the 937 variations, 465 were non-synonymous changes, while 472 synonymous changes included partial internal deletions in the coding regions of LMP1 and gp350. The RNAseq transcriptome revealed that multiple BART transcripts comprised the majority of EBV RNA reads. The SNU-719 EBV expressed high levels of BART, LF3, BHLF1, and BNLF2. Evidence of RNA editing at multiple sites in the host chromosome was found; however, no evidence of genome integration was seen. The annotated SNU-719 EBV sequence will be a useful reference in future EBVaGC studies.
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