Bacillus subtilis spores to stimulate the immune responses

A - Human Necessities – 61 – K

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Details

A61K 39/39 (2006.01) A61K 35/74 (2006.01) A61K 39/08 (2006.01) A61P 37/00 (2006.01)

Patent

CA 2511466

A composition for administration to a human or animal subject comprises spores of Bacillus subtilis in an amount effective to stimulate immune responsiveness in a subject. The spores have either an adjuvant, immunomodulatory, immune potentiation or dendritic cell maturation effect or a combination thereof. A method of boosting an immune response which comprises administering B. subtilis spores to an animal or human is also described. A vaccine is described which comprises B. subtilis spores and antigen. Alternatively, the vaccine comprises B. subtilis spores in the absence of antigen.

L'invention se rapporte à une composition destinée à être administrée à un sujet humain ou animal, contenant des spores de Bacillus subtilis en une quantité permettant de stimuler efficacement une réponse immunitaire chez un sujet. Les spores présentent soit un effet adjuvant, soit un effet immunomodulateur, soit un effet de potentialisation immunitaire, soit un effet de maturation des cellules dendritiques, soit une combinaison de ces derniers. L'invention concerne aussi une méthode permettant d'améliorer une réponse immunitaire, consistant à administrer des spores deB. subtilis à un animal ou à un être humain. L'invention a également trait à un vaccin contenant des spores et un antigène de B. subtilis. Dans une autre variante, le vaccin comprend des spores de B. subtilis, mais pas d'antigène.

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