MIDGE-Th1/SAINT-18 lipoplexes were characterized in vitro and in vivo.
Transfection efficiency of lipoplexes increased with SAINT-18 amount in vitro.
Lipoplexes containing lower amount of SAINT-18 were most immunogenic in mice.
Formulation with SAINT-18 resulted in better DNA uptake into draining lymph nodes.
MIDGE-Th1/SAINT-18 lipoplexes were well tolerated in mice and rats.