CID 317640

DescriptionOridonin is a diterpenoid that has been found in R. rubescens and has anti-inflammatory and anticancer properties. It is an inhibitor of AKT1 and AKT2 (IC50s = 8.4 and 8.9 μM, respectively). Oridonin inhibits proliferation of KYSE70, KYSE410, and KYSE450 esophageal cancer cells in a dose-dependent manner, halts the cell cycle at the G2/M phase, and induces apoptosis when used at a concentration of 20 μM. It decreases the expression of cleaved poly(ADP-ribose) polymerase (PARP), caspase-3, caspase-7, and Bims and the protein levels of phosphorylated AKT and reduces AKT activity. Oridonin reduces tumor growth in patient-derived mouse tumor models when administered at doses of 40 and 160 mg/kg. Oridonin is also an inhibitor of NLRP3 inflammasome assembly and activation. It inhibits inflammation in wild-type, but not Nlrp3-/-, mice in a model of high-fat diet-induced type 2 diabetes when administered at a dose of 3 mg/kg.

UsesOridonin is an effective anticancer agent due to its ability to inhibit proliferation and induce apoptosis of human osteosarcoma cells. Blocks Wnt/β-catenin signalling.

DefinitionChEBI: Oridonin is an organic heteropentacyclic compound and ent-kaurane diterpenoid with formula C20H28O6 isolated from the leaves of the medicinal herb Rabdosia rubescens. It has a role as an antineoplastic agent, an angiogenesis inhibitor, an apoptosis inducer, an anti-asthmatic agent, a plant metabolite and an antibacterial agent. It is an organic heteropentacyclic compound, an enone, a cyclic hemiketal, a secondary alcohol and an ent-kaurane diterpenoid.