An anthroquinone derivative that is naturally found in the flower of
H. perforatum (St. John’s wort) and has antidepressant, antiviral, and anticancer activities.
1,2 Hypericin inhibits neuronal uptake of serotonin, norepinephrine, dopamine, GABA and L-glutamate, contributing to its antidepressant effects.
3 It exerts broad spectrum phototoxic affects (IC
50 = 140 - 1,570 nM) through induction of apoptotic signaling and formation of reactive oxygen species (ROS) in cancer cells.
4 Hypericin also has
in vitro activity, which can be enhanced with photo-activation, against a variety of viruses including HIV, influenza virus, hepatitis C, murine cytolomegalovirus, and herpes viruses.
5