[HTML][HTML] HIV-1 DNA sequence diversity and evolution during acute subtype C infection

GQ Lee, K Reddy, KB Einkauf, K Gounder… - Nature …, 2019 - nature.com
Nature communications, 2019nature.com
Little is known about the genotypic make-up of HIV-1 DNA genomes during the earliest
stages of HIV-1 infection. Here, we use near-full-length, single genome next-generation
sequencing to longitudinally genotype and quantify subtype C HIV-1 DNA in four women
identified during acute HIV-1 infection in Durban, South Africa, through twice-weekly
screening of high-risk participants. In contrast to chronically HIV-1-infected patients, we
found that at the earliest phases of infection in these four participants, the majority of viral …
Abstract
Little is known about the genotypic make-up of HIV-1 DNA genomes during the earliest stages of HIV-1 infection. Here, we use near-full-length, single genome next-generation sequencing to longitudinally genotype and quantify subtype C HIV-1 DNA in four women identified during acute HIV-1 infection in Durban, South Africa, through twice-weekly screening of high-risk participants. In contrast to chronically HIV-1-infected patients, we found that at the earliest phases of infection in these four participants, the majority of viral DNA genomes are intact, lack APOBEC-3G/F-associated hypermutations, have limited genome truncations, and over one year show little indication of cytotoxic T cell-driven immune selections. Viral sequence divergence during acute infection is predominantly fueled by single-base substitutions and is limited by treatment initiation during the earliest stages of disease. Our observations provide rare longitudinal insights of HIV-1 DNA sequence profiles during the first year of infection to inform future HIV cure research.
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