The DS-Cav1-I53–50
nanoparticle immunogen. (A) A vaccine
against respiratory syncytial virus (RSV) was engineered by outwardly
displaying a trimeric RSV antigen (DS-Cav1) on the trimeric subunit
of a computationally designed nanoparticle (I53–50). (B) Negative
stain electron microscopy of I53–50 and DS-Cav1-I53–50
nanoparticles. Left: representative micrographs. Right: averages of
nanoparticle micrographs. (C–D) Antibody binding titers ofDS-Cav-1-specific
antibodies (C) or serum neutralizing antibodies (D) from mice immunized
with bare nanoparticle (I53–50), free immunogen (DS-Cav1),
or nanoparticle immunogens (DS-Cav1-I53–50) at valencies of
33%, 67%, or 100%. Each point represents and individual animal, geometric
means are represented by horizontal lines and indicated at the bottom
of the plots, and statistical significance is indicated: *p < 0.05; **p < 0.01; ***p < 0.001; ****p < 0.0001. See original
publication for more details. Reprinted with permission.(98)