PEDF: A multifaceted neurotrophic factor

Pigment epithelium-derived factor (PEDF) is a potent and broadly acting neurotrophic factor that protects neurons in many regions of the central nervous system against insults such as glutamate excitotoxicity and oxidative damage. Since the crystal structure of PEDF was solved, its biological actions have begun to be mapped to specific structural domains. Here we discuss the structure and function of PEDF and the biochemical pathways it activates, and suggest ways in which this molecule might become a valuable therapeutic agent.