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    Serendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland.

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    Authors
    Moreau, Isabelle
    Hegarty, Susan
    Levis, John
    Sheehy, Patrick
    Crosbie, Orla
    Kenny-Walsh, Elizabeth
    Fanning, Liam J
    Affiliation
    Molecular Virology Diagnostic & Research Laboratory, Department of Medicine, Clinical Sciences Building, Cork University Hospital, Cork, Ireland. i.moreau@ucc.ie
    Issue Date
    2006
    MeSH
    Amino Acid Sequence
    Genotype
    Hepacivirus
    Hepatitis C
    Humans
    Ireland
    Molecular Sequence Data
    Nucleic Acid Hybridization
    Recombination, Genetic
    Sequence Alignment
    Sequence Analysis, Protein
    Viral Nonstructural Proteins
    Viral Proteins
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    Citation
    Serendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland. 2006, 3:95 Virol. J.
    Journal
    Virology journal
    URI
    http://hdl.handle.net/10147/95639
    DOI
    10.1186/1743-422X-3-95
    PubMed ID
    17107614
    Abstract
    BACKGROUND: Recombination between hepatitis C single stranded RNA viruses is a rare event. Natural viable intragenotypic and intergenotypic recombinants between 1b-1a, 1a-1c and 2k-1b, 2i-6p, respectively, have been reported. Diagnostically recombinants represent an intriguing challenge. Hepatitis C genotype is defined by interrogation of the sequence composition of the 5' untranslated region [5'UTR]. Occasionally, ambiguous specimens require further investigation of the genome, usually by interrogation of the NS5B region. The original purpose of this study was to confirm the existence of a suspected mixed genotype infection of genotypes 2 and 4 by clonal analysis at the NS5B region of the genome in two specimens from two separate individuals. This initial identification of genotype was based on analysis of the 5'UTR of the genome by reverse line probe hybridisation [RLPH]. RESULTS: The original diagnosis of a mixed genotype infection was not confirmed by clonal analysis of the NS5B region of the genome. The phylogenetic analysis indicated that both specimens were natural intergenotypic recombinant forms of HCV. The recombination was between genotypes 2k and 1b for both specimens. The recombination break point was identified as occurring within the NS2 region of the genome. CONCLUSION: The viral recombinants identified here resemble the recombinant form originally identified in Russia. The RLPH pattern observed in this study may be a signature indicative of this particular type of intergenotype recombinant of hepatitis C meriting clonal analysis of NS2.
    Language
    en
    ISSN
    1743-422X
    ae974a485f413a2113503eed53cd6c53
    10.1186/1743-422X-3-95
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