Logo image
Antigen-coated poly α-hydroxy acid based microparticles for heterologous prime-boost adenovirus based vaccinations
Journal article   Open access   Peer reviewed

Antigen-coated poly α-hydroxy acid based microparticles for heterologous prime-boost adenovirus based vaccinations

Caitlin D Lemke, Sean M Geary, Vijaya B Joshi and Aliasger K Salem
Biomaterials, Vol.34(10), pp.2524-2529
03/2013
DOI: 10.1016/j.biomaterials.2012.12.030
PMCID: PMC3557532
PMID: 23312902

View Online

Abstract

Adenoviruses show promising potential as vectors for cancer vaccines, however, their high immunogenicity can be problematic when it comes to homologous prime-boost strategies. In the studies presented here we show that heterologous prime-boost vaccinations involving ovalbumin (OVA)-antigen-coated microparticles as a prime, and adenovirus encoding OVA (AdOVA) as a boost, were equally as effective as homologous AdOVA prime-boosts at generating OVA-specific CD8+ T-cell responses, which translated into effective tumor protection. OVA-coated biodegradable poly α-hydroxy acid-based microparticles of varying chemistries, when used as primes in heterologous prime-boost vaccinations, were comparable in terms of promoting OVA-specific CD8+ T cells as well as providing protection against subsequent tumor challenge. These findings auger well for using poly α-hydroxy acid-based microparticles in prime-boost viral vaccination strategies geared toward the safer, and potentially more efficient, generation of anti-tumor immunity.
Antigen Vaccine Poly α-hydroxy acids Adenovirus Microparticles Cancer

Details

Logo image