Memory B Cells and CD8+ Lymphocytes Do Not Control Seasonal Influenza A Virus Replication after Homologous Re-Challenge of Rhesus Macaques
Author Information
Author(s): Timothy D. Carroll, Shannon R. Matzinger, Linda Fritts, Michael B. McChesney, Christopher J. Miller
Primary Institution: University of California Davis
Hypothesis
This study sought to define the role of memory lymphocytes in the protection from homologous influenza A virus re-challenge in rhesus macaques.
Conclusion
Memory B cells and CD8α+ T cells do not contribute to the control of influenza A virus replication after re-challenge with a homologous strain.
Supporting Evidence
- Depleting monoclonal antibodies had minimal effect on influenza A virus replication.
- All animals had strong anti-influenza antibody responses after initial inoculation.
- Influenza A virus replication was well-controlled in untreated animals upon re-challenge.
Takeaway
The study found that even after being vaccinated, the immune cells we thought would protect against the flu didn't work as expected when the monkeys were exposed to the same virus again.
Methodology
Rhesus macaques were treated with monoclonal antibodies to deplete specific lymphocyte populations before re-challenge with a seasonal influenza A virus.
Limitations
The study did not explore the immune mechanisms responsible for long-term protection from homologous influenza A virus re-challenge.
Participant Demographics
Adult rhesus macaques (Macaca mulatta) were used in the study.
Statistical Information
P-Value
p=0.033
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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