A recombinant baculovirus encoding a dengue (DEN)-2 virus envelope glycoprotein truncated of 102 amino acids (aa) at its C-terminus (D2EA102) was constructed. Both intracellular and extracellular D2EA102 induced neutralizing antibodies in mice and were thus immunogenic. Sixty eight percent (P < 0.001) of mice vaccinated with 5 gg of extracellular D2EA102 protein were protected against lethal challenge (Delenda et al., 1994).
Delenda et al., 1994: Delenda C, Frenkiel MP, Deubel V. Protective efficacy in mice of a secreted form of recombinant dengue-2 virus envelope protein produced in baculovirus infected insect cells. Archives of virology. 1994; 139(1-2); 197-207. [PubMed: 7826210].