Autophagy: Friend or Foe in Breast Cancer Development, Progression, and Treatment

Figure 1

Different mechanisms to recycle molecules and organelles in the eukaryotic cell. Eukaryotes have two major protein degradation systems within cells. One is the ubiquitin-proteasome system, which accounts for the selective degradation of most short-lived proteins. The other is the autophagy, the primary means for the degradation of cytoplasmic constituents in the lysosome.