Understanding Antibody Responses to Primary Dengue Virus Infection
Author Information
Author(s): Ruklanthi de Alwis, Martina Beltramello, William B. Messer, Soila Sukupolvi-Petty, Wahala M. P. B. Wahala, Annette Kraus, Nicholas P. Olivarez, Quang Pham, James Brian, Wen-Yang Tsai, Wei-Kung Wang, Scott Halstead, Srisakul Kliks, Michael S. Diamond, Ralph Baric, Antonio Lanzavecchia, Federica Sallusto, Aravinda M. de Silva
Primary Institution: University of North Carolina School of Medicine
Hypothesis
What are the specific properties of human antibodies against dengue virus following primary infection?
Conclusion
The study found that most antibodies generated after primary dengue infection are weakly neutralizing and cross-reactive, with only a small fraction responsible for strong virus neutralization.
Supporting Evidence
- Most antibodies generated after primary dengue infection are weakly neutralizing.
- Many antibodies bind to sites on the dengue virus that are not present on recombinant proteins used in assays.
- A small fraction of the total antibody response is responsible for strong neutralization of the virus.
- Cross-reactive antibodies can enhance infection and potentially worsen disease.
- Further studies are needed to confirm if these findings apply to a broader population.
Takeaway
When people get dengue for the first time, their bodies make antibodies to fight the virus, but most of these antibodies are not very strong and can even make things worse if they encounter a different type of the virus later.
Methodology
The study characterized the specificity and neutralization potency of antibodies from two individuals who had recovered from primary dengue infections using various assays.
Limitations
The findings are based on only two subjects, which may not represent the broader population's immune response to dengue.
Participant Demographics
Two healthy adult donors who experienced primary dengue infections.
Digital Object Identifier (DOI)
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