Importantly, before measurement of caspase activity in CSF buffer,
10 mM dithiothreitol is added to remove the GSH from the
catalytic cysteine. Caspase activity is measured by incubating
10 lg cytosolic cell lysate with 50 lM of the fluorogenic substrate,
e.g. Ac-DEVD-AMC in 150 ll CFS-buffer. Dithiothreitol (DTT) is
added to a final concentration of 10 mM. Caspase fluorogenic substrates
are prepared as 100 mM stock solutions in DMSO: Ac-