id author title date pages extension mime words sentences flesch summary cache txt cord-337867-hqmf6r7t Shim, Byoung-Shik Intranasal immunization with plasmid DNA encoding spike protein of SARS-coronavirus/polyethylenimine nanoparticles elicits antigen-specific humoral and cellular immune responses 2010-12-31 .txt text/plain 3762 221 54 title: Intranasal immunization with plasmid DNA encoding spike protein of SARS-coronavirus/polyethylenimine nanoparticles elicits antigen-specific humoral and cellular immune responses RESULTS: In the present study, the immune responses of BALB/c mice immunized via intranasal (i.n.) route with SARS DNA vaccine (pci-S) in a PEI/pci-S complex form have been examined. The result showed that SARS S-specific IgA antibody response was significantly (P < 0.01) increased in lung wash from mice immunized with PEI/pci-S complexes ( Figure 2B ). B220 + cells from mice immunized with PEI/pci-S complexes were highly proliferated after in vitro re-stimulation with SARS-CoV S protein ( Figure 2C ). The surface expression of CD80 and CD86 co-stimulatory molecules were significantly (P < 0.05) higher on DCs from mice treated with PEI/pci-S complexes than those from SARS-CoV DNA S vaccine alone ( Figure 3 ). DNA vaccine encoding full-length S protein has shown to induce humoral, cellular and protective immune responses against SARS-CoV [6] . ./cache/cord-337867-hqmf6r7t.txt ./txt/cord-337867-hqmf6r7t.txt