Abstract
The postnuclear entry steps of HIV-1 involve reverse transcription, uncoating, and integration into the host genome. The differential regulation of these steps has a significant impact on HIV overall replication, including integration site selection and viral gene expression. Recently, another important phenomenon has been uncovered as part of HIV interplay with the nuclear environment, specifically involving the cleavage and polyadenylation specific factor 6 (CPSF6) protein. This phenomenon is the formation of nuclear HIV-induced membraneless organelles (HIV-1 MLOs). In this article, we will describe the methods used to assess the composition and liquid-liquid phase separation (LLPS) properties of these organelles using fluorescence microscopy. The study of HIV-1 MLOs represents a new frontier that may reveal previously unknown key players in the fate of HIV-infected cells.
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