HIV-1 Core Assembly and Stability Rescued by VSV-G Pseudotyping
Author Information
Author(s): Brun Sonia, Solignat Maxime, Gay Bernard, Bernard Eric, Chaloin Laurent, Fenard David, Devaux Christian, Chazal Nathalie, Briant Laurence
Primary Institution: Université Montpellier 1, Centre d'études d'agents Pathogènes et Biotechnologies pour la Santé (CPBS), France
Hypothesis
How do mutations in the HIV-1 capsid protein affect its assembly and stability during early replication?
Conclusion
Mutations in the HIV-1 capsid protein can impair core assembly and stability, but these defects can be compensated for by using a different viral entry pathway.
Supporting Evidence
- Mutants S149A and S178A showed restored infectivity when pseudotyped with VSV-G.
- VSV-G incorporation enhanced reverse transcription and 2-LTR circle formation in S149A and S178A mutants.
- Mutant S109A did not regain infectivity with VSV-G, indicating a more severe defect.
Takeaway
Some changes in the HIV virus can make it weak, but using a different way to get into cells can help it work better again.
Methodology
The study involved creating HIV-1 mutants with specific mutations in the capsid protein and testing their infectivity when pseudotyped with VSV-G.
Limitations
The study primarily focused on specific mutations and may not represent all possible mutations in the HIV-1 capsid protein.
Digital Object Identifier (DOI)
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