| Assay Method Information | |
| | STING Biochemical [3H]cGAMP Competition Assay |
| Description: | The individual compounds described in the Examples herein are defined as STING agonists by (i) binding to the STING protein as evidenced by a reduction in binding of tritiated cGAMP ligand to the STING protein by at least 20% at 20 uM (concentration of compound being tested) in a STING Biochemical 13H1-cGAMP Competition Assay and (ii) demonstrating interferon production with a 6% or greater induction of IFN-β secretion at 30 uM in the THP1 cell assay (where induction caused by cGAMP at 30 uM was set at 100%).The ability of compounds to bind STING is quantified by the ability to compete with tritiated cGAMP ligand for human STING receptor membrane using a radioactive filter-binding assay. The binding assay employs STING receptor obtained from Hi-Five cell membranes overexpressing full-length HAQ STING prepared in-house and tritiated cGAMP ligand also purified in-house. |
| Affinity data for this assay | |
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