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  • Title: Delivery of multiple CD8 cytotoxic T cell epitopes by DNA vaccination.
    Author: Thomson SA, Sherritt MA, Medveczky J, Elliott SL, Moss DJ, Fernando GJ, Brown LE, Suhrbier A.
    Journal: J Immunol; 1998 Feb 15; 160(4):1717-23. PubMed ID: 9469429.
    Abstract:
    Development of CD8 alphabeta CTL epitope-based vaccines requires an effective strategy capable of co-delivering large numbers of CTL epitopes. Here we describe a DNA plasmid encoding a polyepitope or "polytope" protein, which contained multiple contiguous minimal murine CTL epitopes. Mice vaccinated with this plasmid made MHC-restricted CTL responses to each of the epitopes, and protective CTL were demonstrated in recombinant vaccinia virus, influenza virus, and tumor challenge models. CTL responses generated by polytope DNA plasmid vaccination lasted for 1 yr, could be enhanced by co-delivering a gene for granulocyte-macrophage CSF, and appeared to be induced in the absence of CD4 T cell-mediated help. The ability to deliver large numbers of CTL epitopes using relatively small polytope constructs and DNA vaccination technology should find application in the design of human epitope-based CTL vaccines, in particular in vaccines against EBV, HIV, and certain cancers.
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