Apoptotic machinery

The apoptotic machinery in cancer cells encompasses the complex network of proteins and signaling cascades responsible for executing programmed cell death. This system is broadly categorized into the intrinsic pathway, which is regulated by the Bcl-2 family of proteins at the mitochondrial level, and the extrinsic pathway, which is triggered by extracellular ligands binding to death receptors (Fuchs & Steller, 2011). In oncogenesis, cancer cells frequently acquire mutations or expression changes that disable this machinery, allowing them to survive despite cellular stress or DNA damage (Hanahan & Weinberg, 2011). Therapeutic interventions targeting this machinery aim to restore the cell's innate ability to self-destruct, often by inhibiting anti-apoptotic proteins like Bcl-2 or Mcl-1, or by directly activating caspases (Pfeffer & Singh, 2018). The designation 'not defined' typically indicates that a drug's specific molecular interaction within this pathway has not been precisely identified in the source data, though its ultimate effect is the induction of apoptosis.

Other names

Programmed cell death machineryApoptotic pathwayCancer cell apoptotic machinery

Induction of programmed cell death through the activation of pro-apoptotic proteins or the inhibition of anti-apoptotic proteins, leading to mitochondrial outer membrane permeabilization and caspase cascade activation (Pfeffer & Singh, 2018).