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Cellular cofactors involved in HIV assembly and budding
1Department of Pediatrics, Emory University, Atlanta, Georgia, USA.
Current Opinion in HIV and AIDS
|April 18, 2009
Summary
Recent discoveries reveal cellular cofactors are key to human immunodeficiency virus (HIV) assembly and budding. Endosomal sorting and trafficking pathways play a central role in HIV particle production.
Area of Science:
- Virology
- Cell Biology
- Molecular Biology
Background:
- HIV assembly and budding are critical stages in the virus life cycle.
- Recent breakthroughs have significantly advanced our understanding of these processes.
Purpose of the Study:
- To review major recent advances in HIV assembly and budding.
- To focus on the role of cellular cofactors in these processes.
Main Methods:
- Review of recent scientific literature.
- Analysis of studies on cellular cofactors and their interactions with HIV components.
Main Results:
- The interaction of HIV Gag with TSG101 and the endosomal sorting complex required for transport (ESCRT) highlights the role of endosomal pathways.
- HIV particle assembly and budding occur within the multivesicular body (MVB) lumen, challenging the classical plasma membrane model.
- HIV Gag utilizes the AP-3 complex for trafficking to the MVB.
- Endosomal trafficking pathways are crucial for the subcellular localization of viral genomic RNA and Vpu.
Conclusions:
- A complex model of HIV assembly and budding has emerged, emphasizing the central role of endosomal sorting and trafficking pathways.
- Cellular cofactors significantly influence HIV replication and particle formation.
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