To determine the neutralization profiles induced by HIV-1 Korean clade B, which has a monophyletic lineage and relative limited genetic diversity, we investigated the ability of HIV variants to elicit neutralizing antibodies in the immune response to primary infection. We selected seven Korean drug-naïve subjects with an HIV-1 primary infection and did pseudovirion-based neutralization assays using env genes of Korean HIV origin. The neutralizing antibody responses to the Korean clade B showed broad reactivity to subtype B but a highly subtype-specific pattern. The lengths of the amino acid sequences and the PNGS numbers in the V1-V5 region were positively correlated with neutralization. These results imply that the genetic characteristics of HIV-1 env may affect neutralizing antibody responses in HIV-1-infected individuals. This is the first report describing the relationship between neutralizing antibody responses and HIV-1 genetic characteristics in Korean subjects. It can be useful for developing AIDS vaccines against HIV-1 subtype B strains.
Archives of Virology – Springer Journals
Published: Mar 1, 2011
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