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Discovery and design of G protein-coupled receptor targeting antibodies

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ABSTRACT Introduction G protein-coupled receptors (GPCRs) are the target of one-third of all approved drugs; however, these drugs only target about one-eighth of the human repertoire of GPCRs. GPCRs regulate… Click to show full abstract

ABSTRACT Introduction G protein-coupled receptors (GPCRs) are the target of one-third of all approved drugs; however, these drugs only target about one-eighth of the human repertoire of GPCRs. GPCRs regulate a diverse range of critical physiological processes including organ development, cardiovascular function, mood, cognition, multicellularity, cellular motility, immune responses and sensation of light, taste, and odor. However, many GPCRs are expressed poorly, and a significant proportion have unknown ligands and unclear signaling pathways. Areas covered GPCRs are better suited to be targeted by monoclonal antibodies (mAbs) because of the challenges encountered in small-molecule discoveries such as druggability, selectivity, and distribution. mAbs have better drug-like properties in these respects. Herein, the authors review previously discovered functional mAbs that target GPCRs that are in the clinic and/or in development. They also review the biophysical considerations that make GPCRs so challenging to work with but also provide opportunities for biologic druggability. Expert opinion GPCRs are proven targets of small molecules yet remain an under-represented target of biologics. We believe that antibody drugs that target GPCRs have the potential to unlock new therapeutic avenues and also uncover previously unappreciated receptor biology, particularly when harnessing next-generation biologic modalities.

Keywords: discovery design; design protein; receptor; protein coupled; protein

Journal Title: Expert Opinion on Drug Discovery
Year Published: 2023

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