title: Comparative sequence analysis of the core- and NS5-region of hepatitis C virus from tumor and adjacent non-tumor tissue.
abstract: The sequence variability within the core- and non-structural 5 (NS5)-region of the hepatitis C virus (HCV) was investigated in tumor and non-tumor tissue of 8 patients with HCV-associated hepatocellular carcinoma (HCC). Analyses of multiple clones containing polymerase chain reaction-amplified HCV sequences revealed a significantly higher variability within the core-region of tumor tissue isolates than of isolates from non-tumor tissue. Mutant sequence diversity ranged from silent mutations, as well as amino acid substitutions, appearance of in frame stop codons and deletions leading to frame-shifts. In contrast, the variability of the NS5-region sequences between isolates from tumor and non-tumor tissue was not significantly different. These observations might have important implications on the pathology of HCV, especially its potential tumorigenicity.
authors.affiliation: Medizinische Klinik II, Klinikum der Johann Wolfgang Goethe Universität, D-60590 Frankfurt a. M., Germany.
authors.forename: B
authors.initials: B
authors.lastname: Rüster
authors.forename: S
authors.initials: S
authors.lastname: Zeuzem
authors.forename: V
authors.initials: V
authors.lastname: Krump-Konvalinkova
authors.forename: T
authors.initials: T
authors.lastname: Berg
authors.forename: S
authors.initials: S
authors.lastname: Jonas
authors.forename: K
authors.initials: K
authors.lastname: Severin
authors.forename: W K
authors.initials: WK
authors.lastname: Roth
mesh_terms: D000368:Aged; D019943:Amino Acid Substitution; D001483:Base Sequence; D006528:Carcinoma, Hepatocellular / Q000473:pathology / Q000821:virology*; D018388:Codon, Terminator; D005260:Female; D014644:Genetic Variation; D016679:Genome, Viral; D016174:Hepacivirus / Q000145:classification / Q000235:genetics*; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology / Q000821:virology*; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D009154:Mutation; D010802:Phylogeny; D014758:Viral Core Proteins / Q000235:genetics*; D017361:Viral Nonstructural Proteins / Q000235:genetics*; D012324:RNA-Dependent RNA Polymerase
chemical_list: D018388:Codon, Terminator; D014758:Viral Core Proteins; D017361:Viral Nonstructural Proteins; C069130:nucleocapsid protein, Hepatitis C virus; C087036:NS-5 protein, hepatitis C virus; D012324:RNA-Dependent RNA Polymerase