Oridonin attenuated human PC-3 cell activity by modulating the Wnt/β-catenin signaling

Background. Prostate cancer (PC) prevention is effectively achieved through its inhibition. Oridonin (ORD), an active diterpenoid isolated from Rabdosia rubescens, has been shown to have an inhibitory effect on PC cells, although its impact on PC is unknown. Objectives. The present work investigated the actions and probable mechanisms of ORD on cellular pro-liferation, apoptosis, PC, and the wingless-type MMTV integration site family member 2 (Wnt)/13-catenin signaling pathway using the androgen-independent PC-3 cell line. Materials and methods. In this study, cell viability was analyzed with MTT assay method, apoptotic morphology determined using DAPI dye method, while protein (CD1333, OCT-4, Nanog, SOX-2 & Aldh1A1) and mRNA expressions were analyzed with western blotting and real time polymerase chain reaction (PCR). Results. We demonstrated a concentration-dependent ORD inhibition of PC-3 cell proliferation and inhibition of induction apoptosis. Furthermore, ORD decreased PC-3 Wnt-2, phosphorylated glycogen synthase kinase-3 (p-GSK3), and 13-catenin protein levels and downregulated cyclin-D1 and c-myc messenger ribonucleic acid (mRNA). Conclusions. Oridonin inhibited proliferation and induced apoptosis in PC-3 cells, with the findings suggesting that it acted via the Wnt/13-catenin pathway to exert its effects. This study demonstrates that ORD may impact PC.