DDO-88109 is a STING inhibitor with a K d value of 317 nM for hSTING and 0.625 μM for mSTING. DDO-88109 competitively occupies the CDN-binding pocket of STING , thereby maintaining STING in an inactive state. It inhibits cGAS-STING signaling—including STING translocation from the endoplasmic reticulum to the Golgi apparatus, STING oligomerization, and the phosphorylation of IRF3 , p65 , TBK1 , and STING—and attenuates the production of inflammatory cytokines and tissue inflammation in mouse models of TREX1-deficiency-driven autoinflammation and cisplatin ( HY-17394 )-induced acute kidney injury. DDO-88109 is suitable for research on inflammatory diseases, autoimmune disorders, and acute kidney injury driven by the cGAS-STING pathway.
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