biological activity | TC-G-1008(GPR39-C3) is an effective and orally active G-protein coupled receptor 39 (GPR39)(zinc receptor) agonist, with EC50 values of 0.4 nM and 0.8 nM for rat and human receptors respectively. |
target | TargetValue rGPR39 (Cell-free assessment) 0.4 nM(EC50) hGPR39 (Cell-free assessment) 0.8 nM(EC50) |
Target | Value |
rGPR39
(Cell-free assay)
| 0.4 nM(EC50) |
hGPR39
(Cell-free assay)
| 0.8 nM(EC50) |
in vitro study | TC-G-1008 shows selectivity over a panel of kinases (IC 50 s>10 μ m) and does not exhibit relevant binding affinity for the related ghrelin and neurotensin-1 receptors (IC 50 s>30 μ m). in HEK293-GPR39 cells, GPR39-C3, which is a positive allosteric modulator, activates cAMP production (downstream of Gs), IP1 accumulation (downstream of Gq), SRF-RE-dependent transcription (downstream of G12/13), and β-arrestin recruitment. GPR39-C3 induces pose-and time-dependent loss of response in cAMP production by second challenge of the compound. |
in vivo study | Rat and mouse plasma protein binding for TC-G-1008 is measured as 99.3% and 99.1%, respectively. TC-G-1008 is orally bioavailable in ice and robustly induces acute GLP-1 levels. Upon single oral doses of 10, 30, and 100 mg/kg of aqueous suspensions in 0.5% methylcellulose/0.1% Tween 80, TC-G-1008 achieves, between 1 and 1.5 h, maximal exposures of 1.4, 6.1, and 25.3 μM, respectively. |