HIV-1 Maturation Controls Env Conformation
Author Information
Author(s): Joyner Amanda S., Willis Jordan R., Crowe James E. Jr., Aiken Christopher
Primary Institution: Vanderbilt University School of Medicine
Hypothesis
The conformation of Env on the viral surface is regulated allosterically by interactions with the HIV-1 core during particle maturation.
Conclusion
Maturation of HIV-1 particles alters the exposure of neutralization-sensitive epitopes, which may contribute to immune evasion.
Supporting Evidence
- Immature HIV-1 particles showed enhanced binding of several gp41-specific antibodies.
- Truncation of the gp41 cytoplasmic tail abolished differences in epitope exposure.
- MPER-specific antibodies exhibited enhanced binding to immature HIV-1 particles.
Takeaway
HIV-1 changes its shape as it matures, hiding some parts from the immune system, which makes it harder for our bodies to fight it off.
Methodology
The study used immunofluorescence imaging to quantify antibody binding to mature and immature HIV-1 particles.
Limitations
The study primarily analyzed a laboratory-adapted HIV-1 clone, which may not fully represent primary HIV-1 isolates.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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