The study of orphan G protein-coupled receptors (GPCRs) holds much promise for increasing our understanding of neuropsychiatric diseases and for the development of new therapeutic strategies for these diseases. GPR139 is an orphan GPCR expressed in the central nervous system, especially in areas of the brain that control movement, motivation, and reward, and those that regulate neuropsychiatric behaviour. This review provides information about the discovery, tissue expression, signal transduction pathways, and physiological functions of GPR139, as well as how GPR139 interacts with other GPCRs, which form heteromeric complexes that affect their pharmacology and function. We also discuss the utility and therapeutic potential of ligands that target GPR139, including the pharmacological properties of reported agonists and antagonists. Finally, we highlight the pathologic role of GPR139 in neuropsychiatric behaviour and its potential as a therapeutic target in neuropsychiatric disorders.
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G-protein coupled receptors (GPCRs) constitute the largest class of cell surface receptors and present prominent drug targets. GPR139 is an orphan GPCR detected in the septum of the brain. However, its roles in cognition are still unclear.
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The study of orphan G protein-coupled receptors (GPCRs) holds much promise for increasing our understanding of neuropsychiatric diseases and for the development of new therapeutic strategies for these diseases. GPR139 is an orphan GPCR expressed in the central nervous system, especially in areas of the brain that control movement, motivation, and reward, and those that regulate neuropsychiatric behaviour. This review provides information about the discovery, tissue expression, signal transduction pathways, and physiological functions of GPR139, as well as how GPR139 interacts with other GPCRs, which form heteromeric complexes that affect their pharmacology and function.
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The role of orphan receptor GPR139 in neuropsychiatric behavior.
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Department of Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL, 33458, USA.
Orphan G protein Coupled Receptors (GPCRs) present attractive targets both for understanding neuropsychiatric diseases and for development of novel therapeutics. GPR139 is an orphan GPCR expressed in select brain circuits involved in controlling movement, motivation and reward. It has been linked to the opioid and dopamine neuromodulatory systems; however, its role in animal behavior and neuropsychiatric processes is poorly understood.
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