SIV Variants Evolve After Transmission to New Hosts
Author Information
Author(s): Dawnnica Eastman, Anne Piantadosi, Xueling Wu, Donald N. Forthal, Gary Landucci, Jason T. Kimata, Julie Overbaugh
Primary Institution: Fred Hutchinson Cancer Research Center
Hypothesis
Do SIV variants with higher replication fitness continue to diversify after transmission to a new host?
Conclusion
SIV variants that had high replication fitness and escaped neutralizing antibodies in one host continued to evolve upon transmission to a new host.
Supporting Evidence
- SIV variants from late-stage infections showed more envelope sequence evolution than those from early-stage infections.
- Changes in glycosylation sites occurred before neutralizing antibody responses were detected.
- The study found that late-stage SIV variants had higher replication fitness and continued to evolve after transmission.
Takeaway
When SIV viruses move from one monkey to another, they keep changing and adapting, even if they were already strong in the first monkey.
Methodology
The study analyzed envelope sequence variation of SIVMne variants in macaques infected at different stages of infection.
Potential Biases
Potential bias due to the small number of animals and the specific strains used.
Limitations
The study had a small sample size, which may limit the generalizability of the findings.
Participant Demographics
Macaques infected with different stages of SIVMne variants.
Statistical Information
P-Value
p = 0.07
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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