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Dramatic HIV DNA degradation associated with spontaneous HIV suppression and disease-free outcome in a young seropositive woman following her infection

Abstract : Strategies to cure HIV-infected patients by virus-targeting drugs have failed to date. We identified a HIV-1-seropositive woman who spontaneously suppressed HIV replication and had normal CD4-cell counts, no HIV-disease, no replication-competent virus and no cell HIV DNA detected with a routine assay. We suspected that dramatic HiV DnA degradation occurred post-infection. We performed multiple nested-PCRs followed by Sanger sequencing and applied a multiplex-PCR approach. Furthermore, we implemented a new technique based on two hybridization steps on beads prior to next-generation sequencing that removed human DNA then retrieved integrated HIV sequences with HIV-specific probes. We assembled ≈45% of the HIV genome and further analyzed the G-to-A mutations putatively generated by cellular APOBEC3 enzymes that can change tryptophan codons into stop codons. We found more G-to-A mutations in the HiV DnA from the woman than in that of her transmitting partner. Moreover, 74% of the tryptophan codons were changed to stop codons (25%) or were deleted as a possible consequence of gene inactivation. Finally, we found that this woman's cells remained HiV-susceptible in vitro. Our findings show that she does not exhibit innate HIV-resistance but may have been cured of it by extrinsic factors, a plausible candidate for which is the gut microbiota.
Keywords : Infection Retrovirus
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https://hal-amu.archives-ouvertes.fr/hal-02481077
Contributor : Isabelle Combe <>
Submitted on : Friday, December 18, 2020 - 4:53:33 PM
Last modification on : Tuesday, January 5, 2021 - 3:40:37 AM

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Philippe Colson, Catherine Dhiver, Catherine Tamalet, Jeremy Delerce, Olga Glazunova, et al.. Dramatic HIV DNA degradation associated with spontaneous HIV suppression and disease-free outcome in a young seropositive woman following her infection. Scientific Reports, Nature Publishing Group, 2020, 10 (1), ⟨10.1038/s41598-020-58969-6⟩. ⟨hal-02481077⟩

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