alexa Immunomodulatory effects of HSV2 glycoprotein D in HSV1 infected mice: implications for immunotherapy of recurrent HSV infection.
Immunology

Immunology

Journal of Vaccines & Vaccination

Author(s): York LJ, Giorgio DP, Mishkin EM

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Abstract Immunological analyses in this laboratory and others have suggested that a nonrecurrent HSV seropositive immune status is more closely correlated with a type 1 T helper cell (Th1) response characterized by elevated levels of interferon-gamma and IL2 rather than high titers of virus-specific antibodies. Effective intervention with an immunotherapeutic vaccine may require modulation of the regulatory network of T helper cells such that there is selective restimulation and expansion of the Th1 response. We have established a murine model for assessing the immunomodulatory capacity of an HSV glycoprotein subunit vaccine in animals with pre-existing herpes immunity. Animals were infected with varying doses of HSV1 and then administered glycoprotein D (gD) vaccine adjuvanted with aluminum phosphate at 3-week intervals. Observed changes in serological and cellular responses indicated that administration of subunit vaccine adjuvanted with aluminum phosphate could shift a dominant Th1 response, induced by sensitization with live HSV, towards a Th2 profile of activity. These data suggest that use of aluminum based adjuvants will not selectively stimulate Th1-associated responses and alternative adjuvants may be required for effective use of subunit vaccine in an immunotherapeutic indication in humans.
This article was published in Vaccine and referenced in Journal of Vaccines & Vaccination

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