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Diversity of naturally occurring Epstein-Barr virus revealed by nucleotide sequence polymorphism in hypervariable domains in the BamHI K and N subgenomic regions

Triantos, D; Boulter, AW; Leao, JC; Di Alberti, L; Porter, SR; Scully, CM; ... Teo, CG; + view all (1998) Diversity of naturally occurring Epstein-Barr virus revealed by nucleotide sequence polymorphism in hypervariable domains in the BamHI K and N subgenomic regions. J GEN VIROL , 79 2809 - 2817.

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Abstract

The extent of nucleotide sequence microheterogeneity varies among subgenomic: regions of Epstein-Barr virus (EBV), We examined, in EBV-carrying lymphoid cell lines, the extent of polymorphism in EBV DNA fragments amplified from the BamHI E, K, N and Z regions, and then investigated the diversity of the more hypervariable regions in tissues and body fluids, In cell lines, sequence dissimilarities in a genotype-specifying fragment of the EBNA-3C gene varied from < 1-4 % within each genotype; dissimilarities in the first intron of the BZLF-1 gene were < 2% within each genotype, By contrast, dissimilarities in a C-terminal unique domain of the EBNA-1 gene, and in a fragment that encompasses and is upstream of the LMP-1 start codon, varied between 2 and 7% and were not genotype-specific, The sequence diversity in BamHI K and N regions was then examined in tissues and body fluids by single-strand conformation polymorphism (SSCP) analysis and cycle sequencing. Extensive inter-host diversity was observed, whether the host was co-infected by human immunodeficiency virus (HIV) or not. In the oral cavity of HIV-infected patients, inter-compartmental EBV diversity could be demonstrated, even between sites that were anatomically proximate. Studies of BamHI K clones derived from EBV in oral lesions revealed infection by multiple variants, Identification of hypermutable loci within the EBV genome such as those located in the BamHI K and N regions should permit fine discrimination of individual EBV variants.

Type:Article
Title:Diversity of naturally occurring Epstein-Barr virus revealed by nucleotide sequence polymorphism in hypervariable domains in the BamHI K and N subgenomic regions
Keywords:POLYMERASE CHAIN-REACTION, LYMPHOID-CELL LINES, NUCLEAR ANTIGEN, PERIPHERAL-BLOOD, TISSUE DISTRIBUTION, BNLF-1 GENE, CARRIERS, STRAINS, IDENTIFICATION, RESTRICTION
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute

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