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p53: The Janus of autophagy?

The autophagy pathway functions in adaptation to nutrient stress and tumour suppression. The p53 tumour suppressor, previously thought to positively regulate autophagy, may also inhibit it. This dual interplay between p53 and autophagy regulation is enigmatic, but may underlie key aspects of metabolism and cancer biology.

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Figure 1: Models for positive (a) and negative (b) regulation of autophagy by p53.

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Levine, B., Abrams, J. p53: The Janus of autophagy?. Nat Cell Biol 10, 637–639 (2008). https://doi.org/10.1038/ncb0608-637

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