Immunomodulatory peptides derived from heat shock proteins...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 7/00 (2006.01) C07K 14/195 (2006.01) C07K 14/47 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2427572

A method of modulating an immune response in a subject is disclosed. The invention is based on the discovery that an effective therapeutic strategy for ameliorating the inflammation-related symptoms of an immune-mediated disease, such as arthritis, can be achieved by modulation of the underlying immune response itself, rather than by merely addressing the resulting inflammation. This strategy can be used to regulate the inflammatory response and is applicable to a variety of contexts in which immune modulation is desired, such as mucosal tolerization, DNA vaccination, anergy induction, active immunization, and ex vivo modulation of antigen-specific T cells. In one embodiment, the method comprises administering to the subject a bacterial dnaJ peptide or a human homolog or a non-homologous human isoform thereof.

La présente invention concerne une méthode permettant de moduler une réponse immunitaire chez un sujet. L'invention repose sur la découverte qu'une stratégie thérapeutique efficace destinée à améliorer les symptômes liés à l'inflammation d'une maladie à médiation immune, telle que l'arthrite, peut être mise en oeuvre par la modulation de la réponse immunitaire sous-jacente elle-même, au lieu de seulement traiter l'inflammation résultante. Cette stratégie peut être utilisée afin de réguler la réponse inflammatoire et est applicable à une variété de contextes dans lesquels on souhaite une modulation immunitaire, comme la tolérance des muqueuses, la vaccination par l'ADN, l'induction d'anergie, l'immunisation active, et la modulation ex vivo de lymphocytes T spécifiques de l'antigène. Dans un mode de réalisation, le procédé comprend l'administration au sujet d'un peptide dnaJ bactérien ou d'un homologue humain ou d'une isoforme humaine non-homologue de celui-ci.

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