Collagen-based methods and formulations for the treatment of...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 19/00 (2006.01) A61K 38/39 (2006.01) A61K 47/48 (2006.01) C07K 14/245 (2006.01) C07K 14/28 (2006.01) C07K 14/78 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2210088

The invention provides novel methods and compositions for the treatment of immune system-mediated diseases, including rheumatoid arthritis. The subject compositions comprise one or more different types of collagen or collagen derivatives and a mucosa binding structure. Specific combinations of collagen and/or collagen derivatives may be used to treat specific immune system-mediated diseases. The collagen(s) and/or collagen(s) derivatives used in the subject compositions may be either obtained from natural sources or produced by recombinant genetic engineering techniques and/or chemical modification means. Another aspect of the invention is to provide methods for treating immune system-mediated diseases by administering an effective amount of the subject collagen-containing compositions. The methods of the invention involve the oral administration of a collagen or collagens found in a specific tissue so as to induce the suppression (immunological tolerance) of inflammation against the tissue from which the collagen is found to occur in nature. The methods of the invention include the administration of the subject collagen(s) and/or collagen derivative(s) containing compositions into the intestines so as to induce immune tolerance, e.g., oral administration.

L'invention fournit de nouvelles méthodes et compositions pour le traitement de maladies à médiation immunitaire, dont la polyarthrite rhumatoïde. Les compositions en question comprennent un ou plusieurs types différents de collagène ou de dérivés du collagène et une structure de fixation aux muqueuses. Des combinaisons spécifiques de collagène et/ou de dérivés de collagène peuvent être utilisées pour traiter des maladies à médiation immunitaire spécifiques. Le ou les collagènes et/ou dérivés de collagène utilisés dans les compositions en question peuvent être obtenus de sources naturelles ou produites par des techniques de génie génétique (recombinaison) et/ou par des modifications chimiques. Un autre aspect de l'invention est d'offrir des méthodes pour traiter les maladies à médiation immunitaire par l'administration d'une quantité efficace des compositions en question contenant du collagène. Les méthodes de l'invention font intervenir l'administration par voie orale d'un collagène ou de collagènes présents dans un tissu particulier de manière à induire la suppression (tolérance immunitaire) de l'inflammation dans le tissu dans lequel le collagène est naturellement présent. Les méthodes découlant de l'invention comprennent l'administration des compositions en question contenant ou les collagènes et/ou le ou les dérivés de collagène dans les intestins pour induire une tolérance immunitaire, p. ex. par administration par voie orale.

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