CDK2 Total Biotin Free Assay Kit Human and Mouse

The AlphaLISA™ SureFire® Ultra™ assay enables the rapid and sensitive detection of total and phosphorylated cellular proteins. AlphaLISA™ assays utilize two bead types: Acceptor Beads and Donor Beads. The Acceptor Bead is coated with a proprietary CaptSure™ agent to specifically immobilize the assay specific antibody which is labeled with a CaptSure™ tag. The Donor Bead is coated with streptavidin to capture the biotinylated antibody.  

In the presence of a target protein, the two target-specific antibodies bring Donor and Acceptor Beads into close proximity. When the Donor Beads are activated by a laser (680 nm), singlet oxygen is transferred to the Acceptor Bead leading to the production of an Alpha signal. The amount of light emission (615 nm) from the Acceptor Bead is directly proportional to the amount of target protein present in the sample. If an Acceptor Bead is not in close proximity (i.e. 200 nm) of a Donor bead, little to no signal is produced over background. 

The assay can be executed in a 1-plate or 2-plate assay protocol (Refer to Manual for more details).  

1-plate assay protocol: culturing of cells, treatment, lysis and assay are performed in a single well, enabling miniaturization in high throughput screening programs. 

2-plate assay protocol: cells are cultured and treated in a 96-well culture plate and lysates are then transferred into a separate plate for assay. This format allows the evaluation of multiple targets from a single lysate. 

Data obtained with a 2-plate, 2-incubation protocol. MCF7 cells were seeded at 40K cells/well in a 96-well plate
and incubated overnight. Cells were treated with 5μM LY294002 (PI3K inhibitor) for 3 hours and then with increasing concentrations of Neuregulin-1 (NRG-1) for 24 hours in serum free media. Cells were lysed with Lysis Buffer and assayed separately for Phospho (Thr160) and Total CDK2 using respective SureFire® Biotin Free kits. Equivalent to approximately 2,000 cells/datapoint.

Data obtained with a 2-plate, 2-incubation protocol. Ramos cells were seeded at 200K cells/well in a 96-well plate and then treated with increasing concentrations of CPS2 (CDK2 PROTAC) for 24 hours. Cells were lysed with Lysis Buffer and assayed separately for Total CDK2 and ERK using respective SureFire® Biotin Free kits. Equivalent to approximately 20,000 cells/datapoint.

Data obtained with a 2-plate, 2-incubation protocol. THP-1 cells were seeded at 200K cells/well in a 96-well plate and then treated with increasing concentrations of palbociclib for 24 hours. Cells were lysed with Lysis Buffer and assayed separately for Phospho (Thr160) and Total CDK2 using respective SureFire® Biotin Free kits. Equivalent to approximately 5,000 cells/datapoint.

Data obtained with a 2-plate, 2-incubation protocol. MCF7 cells were seeded at 40K cells/well in a 96-well plate
and incubated overnight. Cells were treated with increasing concentrations of BSJ-03-123 (CDK6 PROTAC) for 24 hours. Cells were lysed with Lysis Buffer and assayed separately for Phospho (Thr160) and Total CDK2 using respective SureFire® Biotin Free kits. Equivalent to approximately 4,000 cells/datapoint.