NCI Drug Dictionary
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CEA/tetanus toxoid T helper epitope fusion protein-expressing DNA plasmid vaccine
A plasmid vaccine encoding wild type human carcinoembryonic antigen (CEA) fused to a tetanus toxoid T helper epitope, with potential antineoplastic activity. Upon vaccination and subsequent intradermal electroporation, CEA/tetanus toxoid T helper epitope fusion protein-expressing DNA plasmid vaccine may stimulate the immune system to mount a cytotoxic T-lymphocyte (CTL) response against CEA-expressing tumor cells. CEA, a tumor associated antigen, is overexpressed in a variety of cancer cell types. The tetanus toxoid helper peptide epitope, obtained from the bacterial Clostridium tetani toxoid, binds to class II MHC molecules and increases the helper T-cell response thereby inducing an increased and long-term immune response. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)