The invention relates to a
rapid detection method for RSK4
enzyme activity and application thereof. The detection method comprises the follows steps: (1) taking a sample to be tested, a blank controland a
positive control, and respectively co-incubating with RSK4
enzyme and an RSK polypeptide substrate / ATP mixed liquor to carry out a
kinase reaction, thus producing ADP; (2) respectively adding anADP-Glo<TM> reaction
reagent into three groups of
kinase reaction systems in step (1) to co-incubate, terminating the
kinase reaction and exhausting the remaining ATP; (3) respectively adding a kinase detection
reagent to the three reaction systems of step (2), co-incubating to convert ADP into ATP, and reading a
luminescence value RLU of newly synthesized ATP; (4) calculating the
enzyme activityaccording to the following formula: enzyme activity=(RLU(Sample)-RLU(Blank)) / (RLU(Pos.Ctrl)-RLU(Blank)) is multiplied by 100%. The method is based on an ADP-Glo<TM> kinase
assay to directly measure the ATP consumed in the reaction to quantify the progress of the reaction. The method is operated under ordinary laboratory conditions to avoid
radiation injury to operators and the environment; the
system is stable, measured data has high accuracy, and the method can be applied to screening of RSK4 target inhibitors and screening of RSK4 target anti-tumor drugs.