MR-L2 is a reversible and noncompetitive allosteric activator of long-isoform phosphodiesterase-4 (PDE4) , activates representative PDE4 long-isoform variants (PDE4A4, PDE4B1, PDE4C3, PDE4D5). MR-L2 suppresses PGE2-induced MDCK cell cyst formation with an EC 50 of 1.2 µM In Vitro MR-L2 (0.3-10 μM; 1 h) significantly suppresses cAMP elevation and cysts formation in MDCK cells. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Cell Viability AssayCell Line: Madin-Darby Canine Kidney (MDCK) cell line Concentration: 0.3, 1, 3 and 10 μM Incubation Time: 1 hour Result: Suppressed cAMP elevation but not enhanced cAMP excretion in MDCK cells. Suppressed cysts formation in MDCK cells with an EC 50 value of 1.2 µM. Suppressed the number of cysts formation in 3D culture for both unstimulated and Vasotocin-treated culture condition while showed no effect on cell viability. Form:Solid IC50& Target:PDE4