Adjuvanted nanocarrier formulation skews neonatal immunity
toward
a type 1 response. Together, cGAMP and CL075 encapsulating PSs alter
rHA-specific Th1 polarization and overcome the inability of the infant
immune system to mount a type 1 immunity and tune the degree of immune
response enhancement. (A) The magnitude of rHA-specific IgG2c titers
(at DOL 21), Th1 polarization, TFH, and GC B cell responses
(DOL 26) is shown in a radar plot as a fold-change over cGAMP-PS-immunized
group (black line). Statistical comparison was performed either using
one-way ANOVA or nonparametric Kruskal-Wallis test corrected for multiple
comparisons; *p < 0.033, **p < 0.002, ***p < 0.001
(n = 5–12 per group). The study was inclusive
of two independent repeats. (B) Tunable aspects of different formulations
when small-molecule agonists are encapsulated in PEG-b-PPS nanocarriers.