Evodiae fructus (EF) is a traditional Chinese medicine which is widely used for the treatment of obesity, inflammation, cardiovascular disease, and diseases of the central nervous system. Recent studies have demonstrated the anticancer property of EF, but the active compounds of EF against prostate cancer and its underlying mechanism remain unknown. In this study, a network pharmacology-based approach was used to explore the multiple ingredients and targets of EF. Through protein-protein interaction (PPI), Gene Ontology (GO) enrichment, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses, the potential targets and corresponding ingredients of EF against prostate cancer cells were obtained. CCK8 and colony formation assays were performed to evaluate the antiproliferative effect of the active compounds on DU145 cells. Cell cycle analysis, Annexin V-FITC/PI staining assay, and Hoechst 33258 staining assay were used to explore the way of evodiamine-induced cell death. The capacities of cell migration after evodiamine treatment were evaluated by wound-healing assay. PharmMapper database was used to predict the potential targets of evodiamine against cancer cell migration. Western blot assay was performed to investigate the signaling pathway through which evodiamine inhibits cell proliferation and migration. The binding of evodiamine to PI3K and AKT was verified by molecular docking. As a consequence, 24 active compounds and 141 corresponding targets were obtained through a network pharmacology-based approach. The results of PPI analysis, GO enrichment, and KEGG pathway enrichment indicated that molecules in the PI3K/AKT/NF-κB signaling pathway were the potential targets of EF against prostate cancer, and evodiamine was the potential active compound. In vitro study demonstrated that evodiamine displays antiproliferative effect on DU145 cells obviously. Evodiamine induces G₂/M cell cycle arrest by Cdc25c/CDK1/cyclin B1 signaling. Additionally, evodiamine also promotes mitochondrial apoptosis and inhibits cell migration through PI3K/AKT/NF-κB signaling in DU145 cells. In conclusion, evodiamine is the active compound of EF to inhibit proliferation and migration of prostate cancer through PI3K/AKT/NF-κB signaling pathway, indicating that evodiamine may serve as a potential lead drug for prostate cancer treatment.

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