Blockade of elr+cxc chemokines as a treatment for...

A - Human Necessities – 61 – K

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A61K 39/395 (2006.01)

Patent

CA 2596706

Experimental autoimmune encephalomyelitis (EAE) is a ThI -mediated autoimmune disease of the central nervous system that is widely used as an animal model of multiple sclerosis (MS). Herein it is demonstrated that CXCR2, a chemokine receptor involved in the recruitment of neutrophils, is expressed in tissues with EAE lesions. Blockade or deficiency of CXCR2 reduces the infiltration of neutrophils to sites of inflammation. Thus provided herein are reagents that antagonize or inhibit ELR+ CXC chemokines and methods of use of these reagents in preventing and treating organ-specific autoimmune diseases like multiple sclerosis, and methods or treating various inflammatory conditions and diseases.

L'encéphalomyélite auto-immune expérimentale (EAE) est une maladie auto-immune du système nerveux central à médiateur Th1, largement utilisée comme modèle animal de la sclérose en plaques (SEP). Selon le présente invention, il a été démontré que CXCR2, un récepteur des chimiokines intervenant dans le recrutement des neutrophiles, est exprimé dans des tissus présentant des lésions EAE. Un blocage ou un déficit de CXCR2 réduit l'infiltration des neutrophiles dans les sites inflammatoires. L'invention concerne par conséquent des réactifs freinant ou inhibant les chimiokines ELR+ CXC, ainsi que des méthodes d'utilisation de ces réactifs pour la prévention et le traitement de maladies immunitaires spécifiques des organes telles que la sclérose en plaques, et des méthodes de traitement de différents états et maladie inflammatoires.

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