| Assay Method Information | |
| | PARP1 and PARP2 Enzyme Activity Test |
| Description: | 1. Test PurposeThis test is used to evaluate the effect of the test compounds on the PARP1 and PARP2 enzyme activities, and the IC50 value of the test compounds on the PARP1 and PARP2 enzymes was calculated using the inhibitory rate.2. Test Materials2.1. Compounds:Test compounds were obtained by the same method as recorded in Test Example 1.2.2. Test Reagents and InstrumentsPARP1 Chemiluminescent assay kit, BPS, 80551;PARP2 Chemiluminescent assay kit, BPS, 80552;PBS, In house, 20210819;Tween-20, Sigma, P9416;96-well polypropylene plate, Nunc, 249944;Centrifuge, XiangYi, TDZ5-WS;Plate reader, BMG, PHERAstar FSX.3. Test Method3.1. Preparation of CompoundsPreparation of 10 mM compound storage solutions: Compound powders were dissolved in 100% DMSO to prepare 10 mM compound storage solutions, respectively.3.2. Enzyme Reaction Process(1) A 5× histone mixture was diluted with PBS at 1:5, added into each well at 50 μL, and incubated overnight at 4° C.(2) Washing was performed with 200 μL of PBST buffer for three times, and incubation was performed in Blocking buffer for 90 min.(3) Washing was performed with 200 μL of PBST buffer for three times.(4) 5 μL of an inhibitor solution was added to each well.(5) 20 μL of diluted PARP was added to each well.(6) 25 μL of biotinylated substrate was added to each well and incubated at room temperature for 1 h.(7) The wells were washed with 200 μL of PBST buffer for three times and sucked to dryness with clean paper towels.(8) 50 μL of diluted Streptavidin-HRP was added to each well and incubated for 30 min.(9) Washing was performed with 200 μL of PBST buffer for three times.(10) 100 μL of a mixture of ELISA ECL substrate A and ELISA ECL substrate B was added to each well.(11) A chemiluminescence signal value was read immediately. |
| Affinity data for this assay | |
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