ML-193 (CID 1261822) is a potent and selective antagonist of GPR55, with an IC₅₀ of 221 nM. ML-193 shows more than 27-fold selectivity for GPR55 over GPR35, CB1 and CB2. ML-193 can improve the motor and the sensorimotor deficits of Parkinson’s disease (PD) rats.

Solid

IC50: 221 nM (GPR55)

ML-193 (0.01-100 μM; pretreated for 15 min) inhibits β-arrestin trafficking induced by L-α-lysophophosphatidylinositol (LPI, 10 μM) and ML186 (1 μM) with IC₅₀s of 0.22 μM and 0.12 μM, respectively.
ML-193 (0.01-10 μM; pretreated for 30 min) decreases the LPI-mediated ERK1/2 phosphorylation, with an IC₅₀ of 0.2 μM in U2OS cells.
ML-193 (5 μM; pretreated for 30 min) attenuates the GPR55 agonists induced increases in hNSCs proliferation rates.
ML-193 (5 μM; 10 d) attenuates the ML184-induced increases in hNSCs differentiation.

Medlife has not independently confirmed the accuracy of these methods. They are for reference only.

ML193 (1 and 5 μg/rat; intra-striatal at a rate of 1 μL/min) attenuates sensorimotor deficits and slip steps, increases motor coordination in PD rats.

Medlife has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature or refrigerated transportation.

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  [2]. Kotsikorou E, et, al. Identification of the GPR55 antagonist binding site using a novel set of high-potency GPR55 selective ligands. Biochemistry. 2013 Dec 31;52(52):9456-69.  [Information]

  [3]. Fatemi I, et, al. The effect of intra-striatal administration of GPR55 agonist (LPI) and antagonist (ML193) on sensorimotor and motor functions in a Parkinsons disease rat model. Acta Neuropsychiatr. 2021 Feb;33(1):15-21.  [Information]

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