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Curr Opin Cell Biol. 2010 Apr;22(2):124-31. doi: 10.1016/j.ceb.2009.11.014. Epub 2009 Dec 23.

Mammalian autophagy: core molecular machinery and signaling regulation.

Author information

1
Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109-2216, USA.

Abstract

Autophagy, a cellular catabolic pathway, is evolutionarily conserved from yeast to mammals. Central to this process is the formation of autophagosomes, double-membrane vesicles responsible for delivering long-lived proteins and excess or damaged organelle into the lysosome for degradation and reuse of the resulting macromolecules. In addition to the hallmark discovery of core molecular machinery components involved in autophagosome formation, complex signaling cascades controlling autophagy have also begun to emerge, with mTOR as a central but far from exclusive player. Malfunction of autophagy has been linked to a wide range of human pathologies, including cancer, neurodegeneration, and pathogen infection. Here we highlight the recent advances in identifying and understanding the core molecular machinery and signaling pathways that are involved in mammalian autophagy.

KEYWORDS:

autophagy; lysosomes; mammalian cells; signal transduction; stress

PMID:
20034776
PMCID:
PMC2854249
DOI:
10.1016/j.ceb.2009.11.014
[Indexed for MEDLINE]
Free PMC Article

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