The present invention relates to methods of using GPR101 G protein-coupled receptor (GPCR) to screen candidate compounds as modulators of hypothalamic proopiomelanocortin (POMC)-derived biologically active peptide secretion. Modulators of GPR101 receptor modulate hypothalamic POMC-derived biologically active peptide secretion and are useful in the treatment of POMC-derived biologically active peptide-related disorders. POMC-derived biologically active peptides include, but are not limited to, α-melanocyte stimulating hormone (α-MSH), β-melanocyte stimulating hormone (β-MSH) and γ-melanocyte stimulating hormone (γ-MSH). Agonists and partial agonists of GPR101 receptor stimulate hypothalamic α-MSH, β-MSH and γ-MSH secretion and are useful, for example, in the treatment and prevention of obesity and conditions related thereto (including but not limited to Type 2 diabetes, insulin resistance, and metabolic syndrome), inflammation-associated disorders, and pyrexia. Inverse agonists and antagonists of GPR101 receptor inhibit α-MSH, β-MSH and γ-MSH secretion and are useful, for example, in the treatment and prevention of disorders such as cachexia.
