AI Article Synopsis
- Influenza epidemics, especially type B, pose a major public health risk, with current vaccines showing limited effectiveness due to changes in virus strains.
- Researchers developed double-layered protein nanoparticles using structure-stabilized HA stalk antigens from influenza B, which were found to activate immune cells effectively.
- Immunization with these nanoparticles led to strong and lasting immune responses, suggesting their potential as a universal vaccine with enhanced protection against various influenza B virus strains.
Article Abstract
The influenza epidemics pose a significant threat to public health. Of them, type B influenza coincided with several severe flu outbreaks. The efficacy of the current seasonal flu vaccine is limited due to the antigenicity changes of circulating strains. In this study, we generated structure-stabilized HA stalk antigens from influenza B and fabricated double-layered protein nanoparticles as universal influenza B vaccine candidates. In vitro studies found that the resulting protein nanoparticles were effectively taken up to activate dendritic cells. Nanoparticle immunization induced broadly reactive immune responses conferring robust and sustained cross-immune protection against influenza B virus strains of both lineages. The results reveal the potential of layered protein nanoparticles incorporated with structure-stabilized constant antigens as a universal influenza vaccine with improved immune protective potency and breadth.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9822777 | PMC |
| http://dx.doi.org/10.1016/j.biomaterials.2022.121664 | DOI Listing |
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