KP1339 (KP1019 sodium) is a ruthenium-indazole complex-based anticancer agent that induces pronounced apoptosis in sensetive cancer cells (Capan1/HCT116/SW480/KB-3-1 IC50 by MTT assay = 44/50/145/170 µM) via ER homeostasis disruption and caspase 8 activation due to depletion of key cellular chaperones, including BiP/GRP78/HSPA5, in combination with enhanced protein damage. When administered in vivo, KP1339 exhibits anti-tumor efficacy in the murine SA-1 fibrosarcoma model (10.5, 21.0, 42.0 mg/150 µL/kg i.v.).
Ruthenium-indazole complex-based anticancer agent in cultures and in vivo via ER homeostasis disruption by depleting chaperones, including BiP/GRP78/HSPA5.