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- W3104161566 abstract "Abstract The ultimate goal of HIV-1 is integration into the host chromatin to optimize the release of high levels of viral progeny and discretely coexist with the host. To uncover the HIV-1 DNA fate in the nuclear landscape we directly tracked the viral DNA (vDNA) and the viral RNA (vRNA) by coupling HIV-1 ANCHOR technology with RNA FISH or MCP-MS2 RNA-tagging bacterial system. Our computational imaging analysis revealed that proviral forms are early located in proximity of the nuclear periphery of mitotic and non-mitotic cells. We also observed that HIV-1 infection prompts clustering formation of the host factor CPSF6 restructuring membraneless organelles enriched in both viral proteins and speckle factors. Interestingly, we observed that integrase proteins are retained in CPSF6 clusters, while the late retrotranscribed DNA was excluded from HIV-induced membranelless organelles (HIV-1 MLOs), indicating that those structures are not proviral sites, but orchestrate viral events prior to the integration step. HIV-1 MLOs are in the vicinity of pre-existing LEDGF clusters. Importantly, we identified actively transcribing proviruses localize, outside HIV-1 MLOs, in LEDGF-abundant regions, known to be active chromatin sites. This study highlights single functional host-proviral complexes in their nuclear landscape, which is markedly restructured by HIV-1 to favor viral replication." @default.
- W3104161566 created "2020-11-23" @default.
- W3104161566 creator A5004364699 @default.
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- W3104161566 date "2020-11-17" @default.
- W3104161566 modified "2023-10-16" @default.
- W3104161566 title "Direct tracking of single proviruses reveals HIV-1/LEDGF complexes excluded from virus-induced membraneless organelles" @default.
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