Journal
SCIENCE
Volume 330, Issue 6009, Pages 1344-1348Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1193497
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Funding
- NCI NIH HHS [R01 CA130893, R37 CA053370-19, R37 CA053370, RC1 CA147961, RC1 CA147961-02, R01 CA130893-03] Funding Source: Medline
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Autophagy is a process of self-cannibalization. Cells capture their own cytoplasm and organelles and consume them in lysosomes. The resulting breakdown products are inputs to cellular metabolism, through which they are used to generate energy and to build new proteins and membranes. Autophagy preserves the health of cells and tissues by replacing outdated and damaged cellular components with fresh ones. In starvation, it provides an internal source of nutrients for energy generation and, thus, survival. A powerful promoter of metabolic homeostasis at both the cellular and whole-animal level, autophagy prevents degenerative diseases. It does have a downside, however-cancer cells exploit it to survive in nutrient-poor tumors.
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