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Gene Synthesis> | … 2. Methods. 2.1. Replication competent cDNA clones. Greater than genome length (1.3 mer) HBV clones of African HBV subgenotypes A1, D2, D6 and genotype E were synthesized at Genscript USA using previously described methods (Sozzi et al., 2016, 2018) … |
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Hepatitis B virus infection in Africa is characterised by distinct genotypes with observed differences in natural history and clinical outcomes. Replication-competent cDNA clones of African genotypes were generated from patient-derived sequences identified in African children with chronic hepatitis B infection living in Australia: A1 (wild-type and basal core promotor (BCP) mutant), D2, D6, and E, comparing the replication phenotype to an established D3 cDNA clone in a transient transfection cell culture model. All clones replicated efficiently although less than the European D3 reference clone, and demonstrated marked differences in replication capacity, highest for subgenotypes A1 and D2. The BCP mutation inc... More