Protein and peptide vaccines for inducing mucosal immunity

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/39 (2006.01) A61K 39/005 (2006.01) A61K 39/008 (2006.01) A61K 39/015 (2006.01) A61K 39/085 (2006.01) A61K 39/21 (2006.01) A61K 39/385 (2006.01)

Patent

CA 2259961

A novel vaccine composition combines a protein or peptide antigen, optionally added hydrophobic material and an immunopotentiating membranous carrier which together preserve the antigenic integrity of the protein or peptide epitopes while at the same time enhancing their immunogenicity. Administration of this composition to a subject provokes a protective immune response comprising secretory neutralizing antibodies present in various mucosal sites in the body. This vaccine and the process for using it is intended for use against pathogenic organisms, in particular those causing sexually transmitted diseases or mucosally transmitted diseases. Such organisms include bacteria and enveloped viruses, particularly HIV-1.

Cette invention concerne une nouvelle composition de vaccin qui comprend une combinaison des éléments suivants: un antigène de protéine ou de peptide; une éventuelle matière hydrophobe rajoutée; et enfin, un excipient membraneux de potentialisation immunologique. Ces éléments permettent de préserver l'intégrité antigène des épitopes de la protéine ou du peptide, tout en accroissant simultanément leur immunogénicité. Lorsque cette composition est administrée à un sujet, elle déclenche une réponse immune protectrice consistant en des anticorps neutralisants et sécrétoires qui sont présents en divers sites muqueux dans le corps. Ce vaccin et le procédé d'utilisation de ce dernier peuvent être employés contre des organismes pathogènes, notamment contre ceux qui entraînent des maladies sexuellement transmissibles ou des maladies transmissibles par les muqueuses. Ces organismes comprennent des bactéries ainsi que des virus enveloppés, notamment le VIH-1.

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