Biochem/physiol Actions

ZCZ011 is a brain-penetrant, cannabinoid receptor CB1-selective positive allosteric modulator (PAM) that enhances orthosteric agonist CP55,940, while reduces orthosteric inverse agonist SR141716A, CB1 binding. ZCZ011 potentiates AEA-stimulated GTPγS binding (Emax = 46.5% without vs. 115.2% with 100 nM ZCZ011; mouse brain membranes) and cellular signaling (β-arrestin Emax = 100% without vs.157% with 100 nM ZCZ011, pERK pIC50 = 6.5 without vs. 8.3 with 10 nM ZCZ011; hCB1 cells). ZCZ011 exhibits antinociceptive efficay in murine chronic constriction injury (CCI) model of neuropathic pain & carrageenan model of inflammatory pain (40 mg/kg i.p.) without cannabimimetic side-effects.