Targeting of Pseudorabies Virus Structural Proteins to Axons Requires Association of the Viral Us9 Protein with Lipid Rafts
2008

How the Pseudorabies Virus Uses Lipid Rafts for Infection

publication Evidence: high

Author Information

Author(s): Lyman Mathew G., Curanovic Dusica, Enquist Lynn W.

Primary Institution: Princeton University

Hypothesis

How does the Us9 protein of the pseudorabies virus promote the axonal sorting of viral proteins?

Conclusion

The association of Us9 with lipid rafts is essential for the efficient targeting of viral structural proteins to axons, facilitating the spread of the virus in the nervous system.

Supporting Evidence

  • Us9 is critical for the axonal sorting of viral capsids and glycoproteins.
  • Reducing Us9's affinity for lipid rafts inhibits viral spread.
  • Us9 is enriched in lipid rafts in both non-polarized and polarized cells.

Takeaway

The pseudorabies virus uses a special protein called Us9 to help it move to the axon part of nerve cells, which is important for spreading the virus.

Methodology

The study used infected PC12 cells and various assays to analyze the association of Us9 with lipid rafts and its role in viral protein sorting.

Limitations

The study primarily focused on in vitro models, which may not fully replicate in vivo conditions.

Digital Object Identifier (DOI)

10.1371/journal.ppat.1000065

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