In vitro: TC-G-1008 shows selectivity over a panel of kinases (IC50s>10 μM) and does not exhibit relevant binding affinity for the related ghrelin and neurotensin-1 receptors (IC50s>30 μM). 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 dose- and time-dependent loss of response in cAMP production by second challenge of the compound.
In vivo: 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 mice 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.
|Formulation||0.5% methylcellulose/0.1% Tween 80|
|Dosages||10, 30, and 100 mg/kg|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||100 mg/mL in DMSO|
Rho kinase-dependent desensitization of GPR39; a unique mechanism of GPCR downregulation.
Shimizu Y, et al. Biochem Pharmacol. 2017 Sep 15;140:105-114. PMID: 28619258.
Discovery and Characterization of Novel GPR39 Agonists Allosterically Modulated by Zinc.
Sato S, et al. Mol Pharmacol. 2016 Dec;90(6):726-737. PMID: 27754899.
7ACC2 is a new potent MCT inhibitor with IC50 of 11 nM for inhibition of [14C]-lactate influx; new antitumor treatment targeting lactate transport in cancer cells. IC50 value: 11 nM ([14C]-lactate influx).
7ACC1(DEAC; Coumarin D 1421; D 1421) selectively interfere with lactate fluxes in the lactate-rich tumor microenvironment; inhibits lactate influx but not efflux in tumor cells expressing MCT1 and MCT4 transporters.
Avibactam sodium is a covalent, reversible β-lactamase inhibitor, inhibits β-lactamase TEM-1 and CTX-M-15 with IC50 of 8 nM and 5 nM, respectively.
|AHU-377 hemicalcium salt
AHU-377 hemicalcium salt is a potent NEP inhibitor with an IC50 of 5 nM. AHU-377 is a component of the heart failure medicine LCZ696.
Isavuconazole is a moderate inhibitor of CYP3A4 and a water-soluble triazole with broad-spectrum antifungal activity.
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