HIV Gag and Exosomes: How They Bud Together
Author Information
Author(s): Fang Yi Wu, Ning Gan, Xin Yan, Wanhua Morrell, James C Gould, Stephen J Gould
Primary Institution: Johns Hopkins University School of Medicine
Hypothesis
Higher-order oligomerization and plasma membrane association target proteins to exosomes and HIV virus-like particles.
Conclusion
The study shows that HIV Gag proteins can bud from cells using the same mechanisms that govern exosome biogenesis.
Supporting Evidence
- Higher-order oligomerization is sufficient to target plasma membrane proteins to exosomes.
- Exosomal targeting information directs proteins to sites of HIV Gag budding.
- p6-deficient HIV can bud independently of class E VPS function.
- Exosomes can bud from either endosomes or from ELDs.
Takeaway
This study found that proteins can be sent to tiny bubbles called exosomes, which are like little packages that cells use to send messages, and that HIV uses a similar method to leave cells.
Methodology
The study used Jurkat T cells to investigate the mechanisms of exosomal protein sorting and HIV Gag budding.
Limitations
The study primarily focuses on Jurkat T cells, which may not fully represent other cell types.
Digital Object Identifier (DOI)
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