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Enhanced Spacer Length between Mannose Mimicking Shikimoyl and Quinoyl Headgroups and Hydrophobic Region of Cationic Amphiphile Increases Efficiency of Dendritic Cell Based DNA Vaccination: A Structure-Activity Investigation.

In the field of dendritic cell based genetic immunization, previously we showed that liposomes of cationic amphiphiles containing mannose-mimicking shikimoyl headgroup are promising DNA vaccine carriers for dendritic cell (DC) transfection. The present structure-activity study reports on the influence of spacer length (between mannose-mimicking headgroups and quaternary nitrogen centers) in modulating the DC-transfection efficiencies. Further, we report on the anti-melanoma immune response inducing properties of the promising cationic amphiphiles in syngeneic C57BL/6J mice under prophylactic settings.