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Annual Review of Virology

Volume 9, 2022

Nuclear Capsid Uncoating and Reverse Transcription of HIV-1

Abstract

After cell entry, human immunodeficiency virus type 1 (HIV-1) replication involves reverse transcription of the RNA genome, nuclear import of the subviral complex without nuclear envelope breakdown, and integration of the viral complementary DNA into the host genome. Here, we discuss recent evidence indicating that completion of reverse transcription and viral genome uncoating occur in the nucleus rather than in the cytoplasm, as previously thought, and suggest a testable model for nuclear import and uncoating. Multiple recent studies indicated that the cone-shaped capsid, which encases the genome and replication proteins, not only serves as a reaction container for reverse transcription and as a shield from innate immune sensors but also may constitute the elusive HIV-1 nuclear import factor. Rupture of the capsid may be triggered in the nucleus by completion of reverse transcription, by yet-unknown nuclear factors, or by physical damage, and it appears to occur in close temporal and spatial association with the integration process.

Keyword(s): capsid, HIV-1, nuclear import, nuclear pore complex, reverse transcriptase, uncoating
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/content/journals/10.1146/annurev-virology-020922-110929
2022-09-29
2024-04-25
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/content/journals/10.1146/annurev-virology-020922-110929
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Nuclear Capsid Uncoating and Reverse Transcription of HIV-1
Annual Review of Virology 9, 261 (2022); https://doi.org/10.1146/annurev-virology-020922-110929
/content/journals/10.1146/annurev-virology-020922-110929
/content/journals/10.1146/annurev-virology-020922-110929
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