The pre-clinical efficacy of DNA vaccines has been demonstrated in a n
umber of animal models, but more limited data exist regarding their im
munogenicity in non-human primates. The studies described below demons
trate that DNA vaccines in reasonable dosages encoding a variety of vi
ral proteins could result in the generation of antibodies, neutralizin
g antibodies, or cytotoxic T lymphocytes in primates. Furthermore, the
se responses could be boosted by repeat administration of the DNA vacc
ine. In an effort to assess the safety of such vaccines sera from prim
ates was shown to lack anti-DNA antibodies. (C) 1997 Elsevier Science
Ltd.