Methods for inhibiting an immune response by blocking the...

A - Human Necessities – 61 – K

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A61K 39/395 (2006.01) A61K 38/19 (2006.01) A61K 47/48 (2006.01) C07K 14/705 (2006.01) C07K 16/28 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2246352

The present invention provides a method for inhibiting an immune response and a method for inhibiting rejection of transplanted tissues. This method comprises preventing an endogenous molecule on a cell selected from the group consisting of gp39 and CD40 antigens from binding its endogenous ligand and preventing an endogenous molecule on a cell selected from the group consisting of CTLA4, CD28, and B7 antigens from binding its endogenous ligand. The prevention of such molecules from binding their ligand thereby blocks two independent signal pathways and inhibits the immune response resulting in transplanted tissue rejection.

La présente invention concerne un procédé d'inhibition d'une réponse immune et un procédé d'inhibition du rejet de tissus transplantés. Ce procédé consiste à empêcher une molécule endogène sur une cellule sélectionnée dans le groupe constitué d'antigènes à gp39 et CD40 de se lier à son ligand endogène, et à empêcher une molécule endogène sur une cellule sélectionnée dans le groupe constitué d'antigènes à CTLA4, CD28 et B7 de se lier à son ligand endogène. Le fait d'empêcher ces molécules de se lier à leur ligand bloque deux voies de signaux indépendantes et inhibe la réponse immune ayant pour effet un rejet de tissu transplanté.

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