TC-G-1008 (GPR39-C3) is a GPR39 (zinc receptor) agonist (EC50 values are 0.4 and 0.8 nM for rat and human receptors respectively).

GPR139 (human):0.8 nM, GPR39 (rat):0.4 nM

HEK293-GPR39 cells are plated and cultured in poly-d-lysine-coated, white, 384-well plates (4000 cells/well) in the growth medium overnight at 37°C in the presence of 5% CO2. For pretreatment of the cells with GPR39 ligands (TCG-1008) or vehicle control (DMSO), the culture medium is removed and the cells are stimulated with GPR39 ligands in assay buffer for the indicated time at 37°C. Then, the compound solution is removed and washed twice with PBS containing 0.1% BSA. For measurement of intracellular cAMP, the cells are stimulated with drugs in stimulation buffer for 30 min at 37°C. The intracellular cAMP level is determined by using HTRF cAMP dynamic 2 kit[2] .

Mice: Mice are given single oral doses of 10, 30, and 100 mg/kg of TC-G-1008[1] .