human mglu4

VU0361737 (ML-128) is a specific positive allosteric modulator (PAM) of the mGlu4 receptor with an EC50 of 240 nM for human receptors and 110 nM for rat receptors. It exhibits weak activity at mGlu5 and mGlu8 receptors and is inactive at mGlu1, mGlu2, mGlu3, mGlu6, and mGlu7 receptors. The compound can penetrate the CNS.

VU0364770 hydrochloride is a potent and selective mGlu4 positive allosteric modulator (PAM) (EC50s: 290 nM and 1.1 μM at rat mGlu4 and human mGlu4 receptor, respectively).

VU0483605 is an effective and selective positive allosteric modulator of mGluR1 with EC50s of 390 and 356 nM for human and rat, respectively.

TC-N 22A is a strong, selective, oral active mGlu4 forward allosteric regulator (PAM) that can cross the blood-brain barrier. EC50 expression of TC-N 22A in BHK cells expressing human mGlu4 was 9 nM. TC-N 22A showed very low activity against mGlu 1, 2, 3, 5, and 7 receptors in excitation and forward allosteric models (EC50 >10 μM). TC-N 22A can be used in the study of central nervous system diseases.

Lu AF21934 is a brain-penetrant and selective mGlu4 receptor positive allosteric modulator (IC50: 500 nM, human).

VU0155041 is an effective and positive allosteric modulator allosteric agonist at mGlu4 receptors (EC50: 798 693 nM, at human rat).