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J. Virol., Sep 1995, 5437-5444, Vol 69, No. 9
S Gunther, BC Li, S Miska, DH Kruger, H Meisel and H Will
Current knowledge of hepatitis B virus (HBV) sequence heterogeneity is
based mainly on sequencing of amplified subgenomic HBV fragments. Here, we
describe a method which allows sensitive amplification and simplified
functional analysis of full-length HBV genomes with or without prior
cloning. By this method, a large number of HBV genomes were cloned from
sera of six immunosuppressed kidney transplant patients. Two size classes
of HBV genomes, one 3.2 kb and another about 2.0 kb in size, were found in
all patients. The genome population from one serum sample was studied in
detail by size analysis of subgenomic PCR fragments and sequencing. Regions
with deletions and insertions were mapped in the C gene and pre-S region.
Up to 100% of HBV genomes in all other immunosuppressed patients also had
deletions in the C gene. Our results demonstrate the potential of the
established method for the structural and functional characterization of
heterogeneous populations of complete virion-encapsidated HBV DNAs and
suggest that HBV genomes with C gene deletions can have a selective
advantage in immunosuppressed patients.
Copyright © 1995, American Society for Microbiology
A novel method for efficient amplification of whole hepatitis B virus genomes permits rapid functional analysis and reveals deletion mutants in immunosuppressed patients
Heinrich-Pette-Institut fur Experimentelle Virologie und Immunologie, Hamburg, Federal Republic of Germany.
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