Psoralidin is a furanocoumarin isolated from the seeds of P. corylifolia, a medicinal plant found in southeastern Asia, that has been shown to induce cytotoxicity against various cancer cells. Through TNF-related apoptosis-inducing ligand-mediated events, psoralidin at 50 μM can induce the death of HeLa cancer cells. It also can induce apoptosis of androgen-dependent (LNCaP, C4-2B) and androgen-independent (DU-145, PC-3) prostate cancer cells and inhibit the growth of PC-3 xenograft tumors in nude mice.