| Assay Method Information | |
| | Binding Assay |
| Description: | The synthesized substances were examined in a PAR1 binding test. This tested whether the substances can inhibit the binding of a radioactively labeled PAR1 agonist known from the literature at the PAR1 receptor (Ho-Sam Ahn, Mol Pharm, 51:350-356, 1997). The human PAR1 receptor was expressed transiently in High Five insect cells. From these cells, after 48 hours, a membrane preparation was produced by standard methods, aliquoted into 10 mM Tris-HCl; 0.3 mM EDTA; 1 mM EGTA; 250 mM sucrose pH 7.5, and stored at -80 C.The substances were preincubated with the membrane at room temperature for 15 minutes, then the radioligand (ALA-(para-F-Phe)-Arg-ChA-homoArg-(3,4-3H-Tyr)-NH2; approx. 40 Ci/mMol) was added. The end concentration of the radioligand in the test buffer (50 mM Tris-HCl; 10 mM MgCl2; 1 mM EGTA; 0.1% BSA; 2% DMSO) was 20 nM, that of the membrane 1 mg/ml. After an incubation time of 60 minutes, 25 uL of the mixture were transferred to a 96-well MultiScreenHTS FB. |
| Affinity data for this assay | |
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