Used in immunological research to study the IL-23 signaling pathway, which plays a key role in the development of inflammatory diseases such as psoriasis, inflammatory bowel disease, and multiple sclerosis. Acts as a soluble receptor decoy to neutralize IL-23 activity in cell-based assays and animal models, aiding in the evaluation of therapeutic strategies targeting the IL-23/IL-23R axis. Commonly employed in protein-protein interaction studies, ELISA, and as a control in receptor-ligand binding assays. Supports the development and testing of monoclonal antibodies and small molecule inhibitors aimed at modulating autoimmune responses.