Autophagy as a target for development of anti-diabetes drugs derived from natural compounds.

Patients with diabetes have a high level of blood glucose because their body cannot produce enough insulin or properly respond to this hormone. In both situations, it has become evident that persistent high concentrations of glucose, insulin, insulin-like growth factor, and insulin resistance lead to dysfunction and destruction of autophagic activity in the cells of islet and other organs involved in complications of diabetes, including the liver, cardiovascular, and nervous systems. Accumulating evidences have revealed that autophagy is a novel therapeutic target with a wide range of beneficial effects on diabetes and that plenty of drugs and natural products are involved in autophagy modulation, either inducing or inhibiting autophagy, through multiple signaling pathways. In this review, we summarize the roles of several clinical drugs and compounds derived from natural products in diabetes and its complications through regulation of autophagy, expecting to inspire further investigation of the underlying mechanisms of these compounds and to facilitate their better clinical application.