Natural Killer Cell Activation Pathway (NK Activation Pathway)

The natural killer (NK) cell activation pathway is a complex signaling network that regulates the activation, cytotoxicity, and cytokine production of NK cells. NK cell activity is determined by the balance between activating and inhibitory signals received through surface receptors. Activation leads to target cell lysis and cytokine release, while inhibition prevents autoimmunity and tissue damage. Dysregulation of this pathway is implicated in various diseases, including cancer and infections.

Other names

NK Cell Activation SignalingNK Cell Cytotoxicity PathwayNatural Killer Cell Signaling Cascade

The pathway integrates signals from activating and inhibitory receptors on NK cells. Activating signals trigger cytotoxicity and cytokine production. Inhibitory signals prevent inappropriate NK cell activation. Drugs can modulate the balance between these signals to enhance or suppress NK cell activity.