Facilitation of antibody forming responses to viral vaccine antigens in young cats by recombinant baculovirus-expressed feline IFN-gamma

Virgil E J C Schijns, Nicolette C Scholtes, Hanneke I van Zuilekom, Lisette E H H Sanders, Lesley Nicolson, David J Argyle

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We assessed the effect of recombinant feline IFN-gamma as vaccine adjuvant for in vivo antibody responses of young 3-month-old kittens to inactivated antigens of rabies and calicivirus, both natural pathogens for cats. When compared to responses following immunization with antigen alone co-administration of baculovirus-expressed cat IFN-gamma significantly enhanced serum antibody titers to both viral antigens; to levels comparable with responses evoked by commonly known saponin and alum adjuvants. Adjuvanticity by feline IFN-gamma was dose-dependent and all doses tested were well tolerated. We conclude that, when further optimized for in vivo delivery, feline IFN-gamma may represent a safe and efficient natural vaccine adjuvant for certain antigens in cats.
Original languageEnglish
Pages (from-to)1718-24
Number of pages7
JournalVaccine
Volume20
Issue number13-14
Publication statusPublished - 2002

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