This compound is used in biomedical research to study the interaction between PD-L1 (programmed death-ligand 1) and immune cells, particularly in the context of cancer immunotherapy. It is expressed in HEK293 cells, which are commonly used for protein expression, enabling high-yield production of PD-L1 for assay development and antibody screening. It supports the development of checkpoint inhibitors by providing a consistent and reliable system to evaluate drug candidates targeting the PD-1/PD-L1 pathway. It is also used in binding assays, functional studies, and quality control for therapeutic antibodies.