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

Hdl Handle:
http://hdl.handle.net/10147/95639
Title:
Serendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland.
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
Citation:
Serendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland. 2006, 3:95 Virol. J.
Journal:
Virology journal
Issue Date:
2006
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
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
ISSN:
1743-422X

Full metadata record

DC FieldValue Language
dc.contributor.authorMoreau, Isabelleen
dc.contributor.authorHegarty, Susanen
dc.contributor.authorLevis, Johnen
dc.contributor.authorSheehy, Patricken
dc.contributor.authorCrosbie, Orlaen
dc.contributor.authorKenny-Walsh, Elizabethen
dc.contributor.authorFanning, Liam Jen
dc.date.accessioned2010-04-06T10:15:45Z-
dc.date.available2010-04-06T10:15:45Z-
dc.date.issued2006-
dc.identifier.citationSerendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland. 2006, 3:95 Virol. J.en
dc.identifier.issn1743-422X-
dc.identifier.pmid17107614-
dc.identifier.doi10.1186/1743-422X-3-95-
dc.identifier.urihttp://hdl.handle.net/10147/95639-
dc.description.abstractBACKGROUND: 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.-
dc.language.isoenen
dc.subject.meshAmino Acid Sequence-
dc.subject.meshGenotype-
dc.subject.meshHepacivirus-
dc.subject.meshHepatitis C-
dc.subject.meshHumans-
dc.subject.meshIreland-
dc.subject.meshMolecular Sequence Data-
dc.subject.meshNucleic Acid Hybridization-
dc.subject.meshRecombination, Genetic-
dc.subject.meshSequence Alignment-
dc.subject.meshSequence Analysis, Protein-
dc.subject.meshViral Nonstructural Proteins-
dc.subject.meshViral Proteins-
dc.titleSerendipitous identification of natural intergenotypic recombinants of hepatitis C in Ireland.en
dc.contributor.departmentMolecular Virology Diagnostic & Research Laboratory, Department of Medicine, Clinical Sciences Building, Cork University Hospital, Cork, Ireland. i.moreau@ucc.ieen
dc.identifier.journalVirology journalen
All Items in Lenus, The Irish Health Repository are protected by copyright, with all rights reserved, unless otherwise indicated.