Modulation of lir function to treat rheumatoid arthritis

A - Human Necessities – 61 – K

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A61K 39/395 (2006.01) A61P 29/00 (2006.01) C07K 16/28 (2006.01)

Patent

CA 2466118

This invention relates to methods for treating rheumatoid arthritis (RA) by administering one or more agents that specifically target LIR-2, LIR-3 and LIR- 7. Results disclosed herein indicate that these three LIRs may participate in regulating the activation of leukocytes that infiltrate synovial tissue. Thus, inflammation in the joints of RA patients can be ameliorated by administering agents that modulate expression or function of LIR-2 and/or LIR-3 and/or LIR-7 to reduce or eliminate the activation of monocytes or macrophages present in inflamed joints, or to reduce their recruitment to the site of inflammation. This can be accomplished by modulating LIR-7, which transmits a stimulatory signal, and/or by modulating LIR-2 and/or LIR-3, which when triggered exert an inhibitory effect, or by concurrently modulating two or all three of these LIRs.

L'invention concerne des méthodes de traitement de la polyarthrite rhumatoïde, ces méthodes consistant à administrer au moins un agent ciblant de manière spécifique LIR-2, LIR-3 et LIR-7. Les résultats des méthodes selon l'invention indiquent que ces trois LIR peuvent participer à la régulation de l'activation des globules blancs qui s'infiltrent dans le liquide synovial. L'inflammation des articulations de patients atteints de polyarthrite rhumatoïde peut donc être atténuée par l'administration d'agents modulant l'expression ou la fonction de LIR-2 et/ou LIR-3 et/ou LIR-7, ladite administration visant à réduire ou à éliminer l'activation des monocytes ou des macrophages présents dans les articulations enflammées, ou à réduire leur recrutement à l'endroit de l'inflammation. Cela peut être réalisé par la modulation de LIR-7 qui transmet un signal stimulant et/ou par la modulation de LIR-2 et/ou LIR-3 qui exerce un effet inhibiteur lorsqu'il est déclenché, ou par la modulation simultanée de deux LIR ou des trois LIR à la fois.

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