Alphavirus replicon particles as immunological adjuvants

A - Human Necessities – 61 – K

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A61K 39/145 (2006.01) A61K 35/76 (2006.01) C07K 14/18 (2006.01)

Patent

CA 2663298

The immune response to an antigen of interest, either in purified form or expressed via an alphavirus replicon particle, can be enhanced by the simultaneous administration of an alphavirus replicon particle which expresses interleukin-12. This allows for the use of significantly smaller quantities of the antigen and this immunization strategy can also eliminate the need for boosting administration of the antigen or it can reduce the number of boosts required for an effective immune response to the antigen.

Selon la présente invention, la réponse immune à un antigène d'intérêt, sous une forme purifiée ou exprimée par une particule de réplicon d'alphavirus, peut être stimulée par l'administration simultanée d'une particule de réplicon d'alphavirus qui exprime l'interleukine-12. Cette stratégie d'immunisation donne la possibilité d'utiliser des quantités considérablement plus faibles de l'antigène, et elle permet également d'éliminer le besoin d'une administration supplémentaire de l'antigène, ou de réduire le nombre de doses complémentaires nécessaires pour déclencher une réponse immune efficace contre l'antigène.

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