{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T10:46:10Z","timestamp":1789987570786,"version":"4.0.1"},"reference-count":53,"publisher":"American Society for Microbiology","issue":"18","license":[{"start":{"date-parts":[[2014,9,15]],"date-time":"2014-09-15T00:00:00Z","timestamp":1410739200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Virol"],"published-print":{"date-parts":[[2014,9,15]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Undifferentiated nasopharyngeal carcinoma (NPC) has a 100% association with Epstein-Barr virus (EBV). However, only three EBV genomes isolated from NPC patients have been sequenced to date, and the role of EBV genomic variations in the pathogenesis of NPC is unclear. We sought to obtain the sequences of EBV genomes in multiple NPC biopsy specimens in the same geographic location in order to reveal their sequence diversity. Three published EBV (B95-8, C666-1, and HKNPC1) genomes were first resequenced using the sequencing workflow of target enrichment of EBV DNA by hybridization, followed by next-generation sequencing,\n            <jats:italic>de novo<\/jats:italic>\n            assembly, and joining of contigs by Sanger sequencing. The sequences of eight NPC biopsy specimen-derived EBV (NPC-EBV) genomes, designated HKNPC2 to HKNPC9, were then determined. They harbored 1,736 variations in total, including 1,601 substitutions, 64 insertions, and 71 deletions, compared to the reference EBV. Furthermore, genes encoding latent, early lytic, and tegument proteins and glycoproteins were found to contain nonsynonymous mutations of potential biological significance. Phylogenetic analysis showed that the HKNPC6 and -7 genomes, which were isolated from tumor biopsy specimens of advanced metastatic NPC cases, were distinct from the other six NPC-EBV genomes, suggesting the presence of at least two parental lineages of EBV among the NPC-EBV genomes. In conclusion, much greater sequence diversity among EBV isolates derived from NPC biopsy specimens is demonstrated on a whole-genome level through a complete sequencing workflow. Large-scale sequencing and comparison of EBV genomes isolated from NPC and normal subjects should be performed to assess whether EBV genomic variations contribute to NPC pathogenesis.\n          <\/jats:p>\n          <jats:p>\n            <jats:bold>IMPORTANCE<\/jats:bold>\n            This study established a sequencing workflow from EBV DNA capture and sequencing to\n            <jats:italic>de novo<\/jats:italic>\n            assembly and contig joining. We reported eight newly sequenced EBV genomes isolated from primary NPC biopsy specimens and revealed the sequence diversity on a whole-genome level among these EBV isolates. At least two lineages of EBV strains are observed, and recombination among these lineages is inferred. Our study has demonstrated the value of, and provided a platform for, genome sequencing of EBV.\n          <\/jats:p>","DOI":"10.1128\/jvi.01665-14","type":"journal-article","created":{"date-parts":[[2014,7,3]],"date-time":"2014-07-03T03:47:48Z","timestamp":1404359268000},"page":"10662-10672","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":103,"title":["Genomic Diversity of Epstein-Barr Virus Genomes Isolated from Primary Nasopharyngeal Carcinoma Biopsy Samples"],"prefix":"10.1128","volume":"88","author":[{"given":"H.","family":"Kwok","sequence":"first","affiliation":[{"name":"Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. W.","family":"Wu","sequence":"additional","affiliation":[{"name":"Centre for Genomic Sciences, The Hong Kong Jockey Club Building for Interdisciplinary Research, The University of Hong Kong, Hong Kong, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. L.","family":"Palser","sequence":"additional","affiliation":[{"name":"Wellcome Trust Sanger Institute, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Kellam","sequence":"additional","affiliation":[{"name":"Wellcome Trust Sanger Institute, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P. C.","family":"Sham","sequence":"additional","affiliation":[{"name":"Centre for Genomic Sciences, The Hong Kong Jockey Club Building for Interdisciplinary Research, The University of Hong Kong, Hong Kong, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. L. 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