How MHC Class I Affects HIV-1 Adaptation
Author Information
Author(s): Boris V. Schmid, Can Keşmir, Rob J. de Boer
Primary Institution: Institute of Theoretical Biology, Utrecht University
Hypothesis
Can HIV-1 adapt to the monomorphic proteasome and TAP due to MHC class I polymorphism?
Conclusion
HIV-1 does not accumulate adaptations to escape immune detection due to the specificity and polymorphism of MHC class I.
Supporting Evidence
- HIV-1 does not accumulate epitope precursor escapes over time.
- Only a subset of epitope precursors is under selection pressure due to MHC polymorphism.
- 39%–66% of mutations causing epitope precursor escapes are released from immune selection pressure upon transmission.
Takeaway
HIV-1 can't easily change to avoid the immune system because different people have different MHC proteins that recognize the virus.
Methodology
The study used bioinformatic tools to predict CTL epitopes and analyze HIV-1 evolution over 30 years.
Potential Biases
There may be an observation bias due to the overrepresentation of certain HLA alleles in the patient data.
Limitations
The study is limited by the short timespan of the population data set and potential biases in the patient sample.
Participant Demographics
Participants were 13 HIV-1 clade B infected patients with HLA genotyping.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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