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  • Title: Vaccination with a cocktail of seven recombinantly expressed HSV-1 glycoproteins protects against ocular HSV-1 challenge more efficiently than vaccination with any individual glycoprotein.
    Author: Ghiasi H, Nesburn AB, Wechsler SL.
    Journal: Vaccine; 1996 Feb; 14(2):107-12. PubMed ID: 8852405.
    Abstract:
    Our previous studies have shown that of seven HSV-1 glycoproteins (gB, gC, gD, gE, gG, gH and gI) individually expressed in baculovirus, vaccination with gD provides the best protection against HSV-1 challenge. To establish whether vaccination with a mixture of these seven expressed glycoproteins would provide better protection against HSV-1 challenge than vaccination with gD alone, we determined the level of protection afforded by vaccination with a cocktail of the seven expressed glycoproteins. The amount of each of the seven expressed glycoproteins in the mixture was equivalent to one-seventh the amount of gD used in the gD alone vaccination. Thus, the total amount of glycoprotein was the same for the cocktail and gD alone vaccine. For neutralizing antibody titer, delayed-type hypersensitivity (DTH), and survival following lethal challenge, no difference was observed between mice vaccinated with all seven glycoproteins and those vaccinated with gD. However, for other criteria, vaccination with all seven glycoproteins appeared to provide better protection than vaccination with gD. Following ocular challenge, virus was not detected at any time in the tears of mice vaccinated with all seven glycoproteins. In contrast, virus was detected in the tears of gD vaccinated mice for up to 3 days post challenge. Mock vaccinated mice had virus in their tears for as long as 10 days. Mice vaccinated with all seven glycoproteins had no eye disease, while gD vaccinated mice had a significant amount of blepharitis. Finally, compared to gD vaccinated mice, the mice vaccinated with all seven glycoproteins were more efficiently protected against the establishment of HSV-1 latency following ocular infection. Our results therefore suggest that while for some protective criteria there was no significant difference between vaccination with gD or seven glycoproteins, vaccination with seven glycoproteins was more efficient in protecting challenged mice against some forms of eye disease, the duration of infection and the establishment of latency.
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