Used in drug discovery and development for type 2 diabetes and obesity treatments by serving as a functional assay system to screen and evaluate glucagon-like peptide-1 receptor (GLP-1R) agonists. Enables high-throughput screening of compound libraries to assess receptor activation, signal transduction, and dose-response relationships. Commonly used in research to study GLP-1R signaling pathways, receptor kinetics, and the effects of therapeutic peptides or small molecules targeting metabolic diseases. Supports consistent and reproducible expression of human GLP-1R in a mammalian cellular environment, allowing for physiologically relevant results in vitro.