Structural basis for antibody cross-neutralization of Dengue and Zika viruses.

ABSTRACT: Safe and effective vaccines against co-circulating mosquito-borne orthoflaviviruses such as Zika virus (ZikV) and the four serotypes of Dengue virus (DenV1-4) must elicit broadly neutralizing antibodies (bnAbs) to prevent the risk of enhancement of infection by non-neutralizing antibodies. We recently discovered new orthoflavivirus-directed bnAbs, including F25.S02, which neutralizes DenV1-4 and ZikV with comparable or superior potency to the previously characterized E dimer epitope (EDE) bnAbs. Mutagenesis studies of viral envelope proteins showed that the epitope specificity of F25.S02 is distinct from EDE1 bnAbs. Here, we used cryoEM and X-ray crystallography to understand the basis of cross-neutralization of F25.S02 at the molecular level. We obtained a ~4.2 Å cryoEM structure of F25.S

SUBMITTER: Hurlburt NK 

PROVIDER: S-EPMC12157686 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature