HMGB1-IN-2 (compound 15) is a selective inhibitor of the highly conserved nuclear protein HMGB1, demonstrating no inhibitory effect at an IC50 of 20.2 μM in RAW264.7 cells. At a concentration of 30 μM, HMGB1-IN-2 reduces IL-1β, TNF-α, and caspase-1 p20 levels, and inhibits NF-κB p65 phosphorylation, providing anti-apoptotic effects. In vivo, HMGB1-IN-2 at a dose of 15 mg/kg administered intraperitoneally alleviates kidney injury in a mouse model of septic acute kidney injury. Furthermore, it inhibits Huh7 and A549 cells with IC50 values of 77.0 μM and 82.0 μM, respectively [1].

HMGB1-IN-2（化合物15）被溶解于含有10%聚氧乙烯蓖麻油[1]的水溶液中。