Rapanone is a natural benzoquinone. Rapanone exhibits a broad spectrum of biological actions, including anti-tumor, antioxidant, anti-inflammatory, antibacterial and antiparasitic. Rapanone also is a potent and selective human synovial PLA2 inhibitor, with an IC50 of 2.6 μM[2].In Vitro: Rapanone (10-40 μM; 24 h) inhibits the cell viability, with IC50s of 35.58 μM and 27.89 μM for primary rats hepatocytes and HepG2 cells, respectively.
Rapanone (10-40 μM; 24 h) induces a concentration-dependent mitochondrial membrane potential dissipation, ATP depletion, hydrogen peroxide generation and, phosphatidyl serine externalization in HepG2 cells.
Rapanone inhibits electron transport at Complex III and promotes mitochondrial dysfunction.In Vivo: Rapanone (2.5-10 mg/kg; i.p.) exhibits anti-inflammatory effects in the carrageenan paw oedema model in mice.