Ex parte ARUFFO et al. - Page 2




          Appeal No. 94-1696                                                          
          Application 07/811,129                                                      


          1. A soluble fusion molecule comprising a first region, having              
               binding specificity for CD11a/CD18, operatively linked to a            
               second region substantially corresponding to an                        
               immunoglobulin constant region.                                        
          2.   The fusion molecule of claim 1, wherein the first region               
               substantially corresponds to an extracellular portion of               
               ICAM-2.                                                                
          9.   A method for activating T cells comprising contacting T                
               cells with a ligand capable of binding to CD3 on said T                
               cells and an effective costimulatory amount of a soluble               
               fusion molecule to activate the T cells, said soluble fusion           
               molecule comprising a first region, having binding                     
               specificity for CD11a/CD18, operatively linked to a second             
               region substantially corresponding to an immunoglobulin                
               constant region.                                                       
               The references relied on by the examiner are:                          
          Springer, T.A. “Adhesion Receptors of the Immune System,” Nature,           
          vol. 346, pp. 425-434 (1990).                                               
          Staunton et al., (Staunton), “Functional Cloning of ICAM-2, a               
          Cell Adhesion Ligand for LFA-1 Homologous to ICAM-1,” Nature,               
          vol. 339, pp. 61-64 (1989).                                                 
          Zettlmeissl, et al. (Zettlmeissl), “Expression and                          
          Characterization of Human CD4: Immunoglobulin Fusion Proteins,”             
          DNA and Cell Biology, vol. 9, pp. 347-353 (1990).                           
               The references relied on by this merits panel are:                     
          Altmann et al. (Altmann), “Cotransfection of ICAM-1 and HLA-DR              
          Reconstitutes Human Antigen-Presenting Cell Function in Mouse L             
          Cells,” Nature, vol. 338, pp. 512-514 (1989).                               
          Boyd et al. (Boyd), “Intercellular Adhesion 1 (ICAM-1) has a                
          Central Role in Cell-Cell Contact-Mediated Immune Mechanisms,”              
          Proc. Natl. Acad. Sci. USA, vol. 85, pp. 3095-3099 (1988).                  



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