Successful nucleic acid based immunization of newborn chimpanzees against hepatitis B virus - PubMed (original) (raw)
Successful nucleic acid based immunization of newborn chimpanzees against hepatitis B virus
A M Prince et al. Vaccine. 1997 Jun.
Abstract
To determine whether DNA based immunization could protect newborn chimpanzees against a challenge infection with hepatitis B virus, two chimpanzees were immunized on the day of birth with a plasmid coding for hepatitis B surface antigen, and boosted at 6 and 24 weeks. Both animals produced transient antibody to the hepatitis B surface antigen. Following challenge with hepatitis B virus at 33 weeks the two immunized animals developed anamnestic antibody responses, however, neither developed detectable hepatitis B surface antigen or antibody to the core protein, the conventional markers of hepatitis B infection. Both of these markers appeared in an unimmunized control animal. We conclude that DNA based immunization can induce protective immunity in newborn chimpanzees.
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