Autophagy,which means‘‘self-eating’’,is a process in which a portion of the cytosol is enclosed in a double-membrane autophagosome and delivered to the hydrolytic vacuole/lysosome for recycling(Fig.1).Bulk degradation by autophagy provides energy and materials for cell survival under various stress conditions such as starvation and energy deprivation.Autophagy also has a scavenging function by Autophagy, which means’’self-eating ’’, is a process in which a portion of the cytosol is enclosed in a double-membrane autophagosome and delivered to the hydrolytic vacuole / lysosome for recycling (Fig.1) .Bulk degradation by autophagy provides energy and materials for cell survival under various stress conditions such as starvation and energy deprivation. Autophagy also has a scavenging function by