C-171 是干扰素基因刺激物 (STING) 的抑制剂。 它与 STING 结合，抑制其棕榈酰化，并阻止 TBK1 的募集和磷酸化。 C-171 is a covalent small-molecule inhibitor of STING. C-171 efficiently inhibits both hsSTING and mmSTING through covalently target the predicted transmembrane cysteine residue 91 and thereby block the activation-induced palmitoylation of STING.