Combination of kynurenine and antigen presenting cells (apc) as therapeutics and methods for their use in immune modulation

Abstract

This invention provides combinations of kynurenine and antigen presenting cells (APC) for modulating immune tolerance, wherein the combinations may be used to modulate an autoimmune response, which may be of use in the treatment of type 1 diabetes (T1D) or alopecia areata (AA). Uses of kynurenine and antigen presenting cells (APC) as an immune modulator for the treatment of T1D or AA are also provided.

1 . A method of treating alopecia areata (AA), in a mammal in need thereof, the method comprising:
 (a) systemic administration of an antigen presenting cell (APC) to the mammal; and   (b) administration of a kynurenine to the mammal.   
     
     
         2 . The method of  claim 1 , wherein the APC is allogenic. 
     
     
         3 . The method of  claim 1 , wherein the APC is syngenic. 
     
     
         4 . The method of  claim 1 , wherein the APC is a non-professional APC. 
     
     
         5 . The method of  claim 1 , wherein APC is a professional APC. 
     
     
         6 . The method of  claim 1 , wherein the APC and the kynurenine are co-administered. 
     
     
         7 . The method of  claim 6 , wherein the co-administration is simultaneously. 
     
     
         8 . The method of  claim 6 , wherein the co-administration is consecutively. 
     
     
         9 . The method of  claim 8 , wherein the APC is administered before the kynurenine. 
     
     
         10 . The method of  claim 8 , wherein the kynurenine is administered before the APC. 
     
     
         11 . The method of  claim 1 , wherein the APC is administered intraperitoneally. 
     
     
         12 . The method of  claim 1 , wherein the kynurenine is administered orally. 
     
     
         13 . The method of  claim 1 , wherein the APC is selected from one or more of the following: fibroblasts, thymic epithelial cells, thyroid epithelial cells, glial cells, beta-cells, and endothelial cells. 
     
     
         14 . The method of  claim 1 , wherein the APCs are fibroblast cells. 
     
     
         15 . The method of  claim 1 , wherein the kynurenine is selected from one or more of kynurenic acid, DL-kynurenine, L-kynurenine, D-kynurenine, and 3-hydroxy-DL-kynurenine. 
     
     
         16 . The method of  claim 1 , wherein the mammal is a human. 
     
     
         17 - 18 . (canceled) 
     
     
         19 . The method of  claim 1 , wherein the kynurenine is kynurenic acid. 
     
     
         20 . The method of  claim 1 , wherein the kynurenine is selected from one or more of DL-kynurenine, L-kynurenine, and D-kynurenine.