Will Z-VAD-FMK trigger a shift to programmed necrosis?

This is a critical consideration for Z-VAD-FMK.

• The Switch: In RIPK1/RIPK3-expressing cell lines, inhibiting Caspase-8 with Z-VAD-FMK can unleash necroptosis if a death stimulus (like TNF-alpha) is present.
• Co-treatment: To prove apoptosis, test a group with Z-VAD-FMK + Necrostatin-1 (Nec-1). If the combination rescues the cells but Z-VAD-FMK alone does not (or makes it worse), your cells are switching to necroptosis.