T-cell Inhibitor

T-cell inhibitors are molecules or drugs that suppress the activation, proliferation, or function of T cells—key components of the adaptive immune system. These inhibitors play a crucial role in maintaining immune homeostasis and preventing overactive immune responses that can lead to autoimmunity, hypersensitivity reactions, and transplant rejection. Conversely, insufficient inhibition may allow tumor cells to evade immune surveillance.

Other names

T cell inhibitorsT-cell co-inhibitory receptorsImmune checkpointsT-cell suppressors

T-cell inhibitors function by: * Competing with co-stimulatory signals for ligand binding at the immunological synapse * Transducing intracellular signals that dampen downstream pathways required for full activation * Inducing gene expression programs associated with reduced cytokine production and cellular proliferation