Biochem/physiol Actions Auraptene is an estrogen receptor modulator that also acts as an ACAT inhibitor. It displays anti-tumor effects in several xenograft and chemically-induced murine tumor models. Auraptene induces apoptosis and is anti-proliferative in cancer cell lines. It has agonistic properties against PPARs, and interferes with lipid and cholesterol production by inhibiting ACAT (IC50 = 4 uM).