Journal
NATURE MEDICINE
Volume 7, Issue 8, Pages 920-926Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/90959
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Funding
- NCI NIH HHS [N01-CO-56000] Funding Source: Medline
- NIAID NIH HHS [AI/GM 399951, T32-AI07501] Funding Source: Medline
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Integase Interactor 1(INI), also known as hSNF5, is a protein that interacts with HIV-1 integrase. We report here that a cytoplasmically localized fragment of INI (S6; aa183-294) containing the minimal integrase-interaction domain potently inhibits HIV-1 particle production and replication. Mutations in 56 or integrase that disrupt integrase-INI1 interaction abrogated the inhibitory effect. An integrase-deficient HIV-1 transcomplemented with integrase fused to Vpr was not affected by S6. INI1 was specifically incorporated into virions and was required for efficient HIV-1 particle production. These results indicate that INI1 is required for late events in the viral life cycle, and that ectopic expression of S6 inhibits HIV-1 replication in a transdominant manner via its specific interaction with integrase within the context of Gag-Pol, providing a novel strategy to control HIV-1 replication.
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