CHEMBL3705600

Binding Assay: cDNA sequence encoding a human NPY Y5 receptor (WO96/16542) was cloned in a vector (pME18S, Takebe et al. Mol. Cell. Biol. 8, 466-472). The obtained expression vector was transfected into CHO cells as a host by using Lipofect AMINE reagent (Trademark, Inbitrogen) according to the instruction manual. The cells that stably express human NPY Y5 receptor were obtained.The membranes prepared from the CHO cells expressing human NPY Y5 receptor, the compound of this invention and 30,000 cpm [1251] peptide YY (60 pM of final concentration: Healthcare) were incubated in the assay buffer (20 mM HEPES-Hanks buffer containing 0.1% bovine serum albumin, pH 7.4) at 25° C. for 2 hours, and then the membrane was filtered from the mixture through a glassfilter (GF/C) presoaked with 1% polyethyleneimine. After washing with 50 mM Tris-HCl buffer (pH 7.4), radioactivity retained on the filters was quantified with a gamma counter.