tetano
Editor, Senior Moderator
J Immunol. 2013 Aug 16. [Epub ahead of print]
DNA Vaccine that Targets Hemagglutinin to MHC Class II Molecules Rapidly Induces Antibody-Mediated Protection against Influenza.
Grodeland G, Mjaaland S, Roux KH, Fredriksen AB, Bogen B.
Source
Centre for Immune Regulation, Institute of Immunology, University of Oslo and Oslo University Hospital, Oslo 0027, Norway;
Abstract
New influenza A viruses with pandemic potential periodically emerge due to viral genomic reassortment. In the face of pandemic threats, production of conventional egg-based vaccines is time consuming and of limited capacity. We have developed in this study a novel DNA vaccine in which viral hemagglutinin (HA) is bivalently targeted to MHC class II (MHC II) molecules on APCs. Following DNA vaccination, transfected cells secreted vaccine proteins that bound MHC II on APCs and initiated adaptive immune responses. A single DNA immunization induced within 8 d protective levels of strain-specific Abs and also cross-reactive T cells. During the Mexican flu pandemic, a targeted DNA vaccine (HA from A/California/07/2009) was generated within 3 wk after the HA sequences were published online. These results suggest that MHC II-targeted DNA vaccines could play a role in situations of pandemic threats. The vaccine principle should be extendable to other infectious diseases.
PMID:
23956431
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23956431
DNA Vaccine that Targets Hemagglutinin to MHC Class II Molecules Rapidly Induces Antibody-Mediated Protection against Influenza.
Grodeland G, Mjaaland S, Roux KH, Fredriksen AB, Bogen B.
Source
Centre for Immune Regulation, Institute of Immunology, University of Oslo and Oslo University Hospital, Oslo 0027, Norway;
Abstract
New influenza A viruses with pandemic potential periodically emerge due to viral genomic reassortment. In the face of pandemic threats, production of conventional egg-based vaccines is time consuming and of limited capacity. We have developed in this study a novel DNA vaccine in which viral hemagglutinin (HA) is bivalently targeted to MHC class II (MHC II) molecules on APCs. Following DNA vaccination, transfected cells secreted vaccine proteins that bound MHC II on APCs and initiated adaptive immune responses. A single DNA immunization induced within 8 d protective levels of strain-specific Abs and also cross-reactive T cells. During the Mexican flu pandemic, a targeted DNA vaccine (HA from A/California/07/2009) was generated within 3 wk after the HA sequences were published online. These results suggest that MHC II-targeted DNA vaccines could play a role in situations of pandemic threats. The vaccine principle should be extendable to other infectious diseases.
PMID:
23956431
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23956431