| Assay Method Information | |
| | Presto-Tango -Arrestin Recruitment Assay |
| Description: | Binding of the parent compounds to putative receptors CNR1 and CNR2 (cannabinoid receptors 1& 2) was measured by a Presto-Tango assay (FIG. 5A and FIG. 5B). These receptors are responsible for many downstream effects of marijuana derivatives as well as other endocannabinoids that have been previously reported in literature and this study explores if our compounds bind to these receptors. HTLA were received from the Roth Lab and CNR1 and CNR2 plasmids were purchased from Addgene. HTLA cells were maintained in DMEM with 10% FBS containing 2 μg/mL of puromycin and 100 μg/mL of hygromycin B at 37° C. in a 5% CO2 humidified air atmosphere and grown to 80-90% confluency. Cells were then seeded at 20,000 cells per 100 uL into poly-L-lysine coated 96-well plate. After 18-24 hrs, cells were transfected with CNR2 (0.1 ug/well) using Calfectin as the transfection reagent. Transfection media was replaced after 12-18 hours with serum-media and proceeded for 36 hours. On the day of the assay, serum-media was replaced with serum-free media for 4 hours, then the compounds were added in a log dose manner in DMSO to a final well volume of 200 uL and incubated overnight. The next day, media was removed and 20 μL of Bright-Glo solution was added to the cells and incubated for 20 min at room temperature in the dark and measured for luminescence. Relative luminescence units (RLU) values were normalized to % receptor response, plotted as a function of compound concentration and analyzed using DoseResp in OriginPro. |
| Affinity data for this assay | |
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