Zcytor17 heterodimeric cytokine receptor monoclonal antibodies

Abstract

Novel polypeptide combinations, polynucleotides encoding the polypeptides, and related compositions and methods are disclosed for zcytor17-containing multimeric or heterodimer cytokine receptors that may be used as novel cytokine antagonists, and within methods for detecting ligands that stimulate the proliferation and/or development of hematopoietic, lymphoid and myeloid cells in vitro and in vivo. The present invention also includes methods for producing the multimeric or heterodimeric cytokine receptor, uses therefor and antibodies thereto.

What is claimed is: 
     
         1 . An isolated, humanized, monoclonal antibody which specifically binds to a heterodimeric receptor comprising a first receptor and a second receptor, wherein the first receptor comprises amino acid residues 20-519 of SEQ ID NO: 111 or amino acid residues 33-532 of SEQ ID NO:5, and the second receptor comprises amino acid residues 28-739 of SEQ ID NO:7, and wherein the antibody inhibits signal transduction through the heterodimeric receptor induced by a polypeptide consisting of amino acid residues 27-164 of SEQ ID NO:2. 
     
     
         2 . The antibody of  claim 1 , wherein the antibody specifically binds to the first receptor of the heterodimeric receptor. 
     
     
         3 . The antibody of  claim 1 , wherein the first receptor comprises amino acid residues 20-732 of SEQ ID NO:111. 
     
     
         4 . The antibody of  claim 1 , wherein the first receptor comprises amino acid residues 33-662 of SEQ ID NO:5. 
     
     
         5 . The antibody of  claim 1 , wherein the second receptor comprises amino acid residues 28-979 of SEQ ID NO:7. 
     
     
         6 . The antibody of  claim 1 , wherein the antibody comprises a human immunoglobulin constant domain. 
     
     
         7 . A composition comprising the antibody of  claim 1  and a pharmaceutically acceptable vehicle.