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Assay Method Information

Assay Name:  CB2 cAMP (Assay 1)
Description:  CHO cells expressing human CB2R (Euroscreen) were plated at a density of 10,000 cells per well in 384 well plates and incubated overnight at 37° C. After removing the media, the cells were treated with test compounds diluted in stimulation buffer containing 1 mM IBMX, 0.25% BSA and 10 uM Forskolin. The assay was incubated for 30 minutes at 37° C. Cells were lysed and the cAMP concentration was measured using DiscoverX-XS cAMP kit, following the manufacturer's protocol. In this setting, agonists will decrease forskolin induced production of cAMP while inverse agonists will further increase forskolin induced production of cAMP. EC50 of agonists were calculated as follows. The maximal amount of cAMP produced by forskolin compared to the level of cAMP inhibited by 1 uM CP55940 is defined as 100%. The EC50 value of each test compound was determined as the concentration at which 50% of the forskolin-stimulated cAMP synthesis was inhibited. Data was analyzed using a four-parameter logistic model. (Model 205 of XLfit 4.0).
Affinity data for this assay
 

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Last update November 1, 2007
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