Caspase-3 activity assay

LB Louisa Béchohra
FL Fatima Laraba-Djebari
DH Djelila Hammoudi-Triki
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Activity of caspase-3 was performed using CASP-3-C colorimetric assay kit (Sigma-Aldrich, USA), according to the manufacturer’s instructions. Cell lysates obtained from F3 fraction-treated or -untreated NCI-H358 cells were incubated with 2 mM Caspase-3 substrate (Ac-DEVD-pNA) and simultaneously incubated with or without the caspase-3 inhibitor Ac-DEVD-CHO (200 μM) for 1.5 h at 37 °C. Cisplatin was considered the positive control. The enzyme activity was followed by yellow color development at 405 nm and the results were calculated using p-nitroaniline calibration curve.

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