| Assay Method Information | |
| | Primary Assay Used to Determine Potency of PTPN2 Enzymatic Activity Inhibition |
| Description: | Compound activity was determined using GST-tagged PTPN2 protein (Cat #31592, ActiveMotif) (SEQ ID NO: 1) in an in vitro enzymatic reaction. The enzymatic reaction was carried out in assay buffer (50 mM HEPES Na salt pH 7.2-7.4, 2 mM EDTA, 100 mM NaCl, 52 ng/μL BSA, and 6 mM DTT). The compounds were dispensed on a 384 well Diamond Well Plate (Axigen, Cat #P-384-120SQ-C-S) using the Biomek FX liquid handling system at 100× solutions of compounds in DMSO. 2×PTPN2 (final concentration 0.004 ng/μL) was prepared in 1× Assay buffer and 25 μL of mixture per well was added into Reaction plate (Optiplate, black, Perkin Elmer, Cat #6007270). Add 25 μL of 1× buffer to Ctrl- (Substrate w/o PTPN2) wells followed by centrifugation at 100 g for 1 min. Next step the Compounds were added to Reaction plate using Biomek station via following steps: 3 μl of 100× compounds (in DMSO) were mixed with 27 μL of Assay Buffer, then 5 μL of this mixture was added to Reaction plate with 25 μL of PTPN2 Mix. Plates were centrifuged for 1 min at 100 g and incubated for another 10 min at rt. Finally, 20 μL of 2.5× Substrate (DiFUMP, Invitrogen™ Cat #D6567) mix was added into appropriate wells of Reaction plate to the final concentration of 2 μM, plate was centrifuged at 100 g for 1 min followed by incubation at rt for 60 min, and the Fluorescence Intensity was measured using a Microplate Reader (ClarioStar Plus, excitation 360 nm, emission 450 nm). |
| Affinity data for this assay | |
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