What role do toxins play in triggering apoptosis?

In the context of biology, apoptosis is a mechanism of programmed cell death that allows cells to self-destruct in an orderly fashion when stimulated by specific internal or external triggers.1

Toxins act as one of several external stimuli capable of triggering this process in otherwise normal cells. While exposure to certain toxins can also cause necrosis—an accidental form of cell death resulting from injury or the inhibition of crucial metabolic processes—toxins are recognized as a distinct environmental factor that can initiate the apoptotic pathway.12

Once the "death decision" is initiated by such stimuli, the cell undergoes a complex, organized process involving the activation of caspase proteolytic enzymes. These enzymes dismantle the cell's internal structures, ensuring that the cell is partitioned into membrane-bound fragments for disposal by scavenger cells, thereby preventing damage to surrounding tissues.1