ArticleViruses2024
HIV Replication Under High-Level Cabotegravir Is Associated with the Appearance of 3'-PPT Mutations, Circular DNA Transcription and Recombination.
Article in Viruses, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Non-integrase mechanisms for dolutegravir resistance.Retrovirology · 2026Review
- High-resolution HIV-1 mNAR genomics and bioinformatics · 2025Article
- Elucidating the mechanism by which HIV-1 nucleocapsid mutations confer resistance to integrase strand transfer inhibitors.Science advances · 2025Article
- Elucidating the Mechanism by Which HIV-1 Nucleocapsid Mutations Confer Resistance to Integrase Strand Transfer Inhibitors.bioRxiv : the preprint server for biology · 2025Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The HIV integrase inhibitor, dolutegravir (DTG), in the absence of eliciting integrase (int) resistance, has been reported to select mutations in the virus 3'-polypurine tract (3'-PPT) adjacent to the 3'-LTR U3. An analog of DTG, cabotegravir (CAB), has a high genetic barrier to drug resistance and is used in formulations for treatment and long-acting pre-exposure prophylaxis. We examined whether mutations observed for DTG would emerge in vitro with CAB. HIV-1IIIB was cultured in paired experiments of continuous high (300 nM) CAB initiated 2 h or 24 h after infection. After eight months of CAB treatment, no int resistance was detected. Conversely, HIV RNA 3'-PPT mutants were detected within one month and were the majority virus by day 98. The appearance of 3'-PPT variants coincided with a rapid accumulation of HIV 1-LTR and 2-LTR circles. RNA amplification from the 3'-LTR TAR identified transcripts crossing 2-LTR circle junctions, which incorporated the adjacent U5 sequence identical to the 3'-PPT mutants. 3'-PPT variants were only identified in LTR circles and transcripts. Additionally, we found evidence of linear HIV and LTR circle recombination with human DNA at motifs homologous to 3'-PPT sequences. HIV persistence under CAB was associated with transcription and recombination of LTR circle sequences.
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