Luciferase Assay

To make 1X Cell Lysis Buffer:

Note: This recipe is for 24 samples ONLY- please use accompanying chart for different sample sizes!!

(for 24 samples at 24-well-plate)

Lysis Stock (5X) 1540µl
Water 6160µl

(for 24 samples at 12-well-plate)

Lysis Stock (5X) 2980µl
Water 11920µl

Home made Cell Lysis Buffer (5X)

125µM Tris-PO4, 10µM DTT (dithiotretiol), 10µM CDTA (Sigma D0922), 50% Glycerol, 5% Triton x-100)

150ml

1M Tris-PO4 18.75ml
DTT 0.23g
CDTA 0.52g
Glycerol 75ml
Triton X-100 7.5ml
H2O 48.75ml

GME Buffer (1X)

(25mM Glycylglyine (Sigma G2265) , 15mM MgSO4, 4mM EGTA)

0.5M Glycylglycine 25ml
1M MgSO4 7.5ml
0.5M EGTA 11ml
H2O 456.5ml

ATP (Sigma A7699)

1g in 4.7ml H2O

100µl aliquots stored at -20ºC

Protocol

1)      Aspirate media from wells

2)      Wash wells with PBS briefly

3)      Add 400µl/well (12-well/plate) or 200µl/well (24-well/plate) 1X Cell Lysis buffer and lyse for 10-15min while occasionally shaking plate.

4)      Transfer supernatant to a fresh epi tube.

5)      Briefly spin at 13K for 30sec-1min to pellet debris.

6)      Transfer 200µl of supernatant (without contaminating debris) to glass tube for assay.

Note: This recipe is for 24 samples ONLY- please use accompanying chart for different sample sizes!!

Prepare Luciferase Subtrate Solution (Injector 1)

Luciferase Substate Stock 880µl
GME 3520µl

Prepare Mix Solution (Injector 2)

GME 8700µl
1M K3PO4 174µl
0.2M ATP 116µl
1M DTT 11.6µl