Journal
ONCOGENE
Volume 23, Issue 16, Pages 2881-2890Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1207512
Keywords
cathepsins; Spi2A; TNF alpha
Funding
- NIDDK NIH HHS [DK63947] Funding Source: Medline
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For many years apoptosis research has focused on caspases and their putative role as sole executioners of programmed cell death. Accumulating information now suggests that lysosomal cathepsins are also pivotally involved in this process, especially in pathological conditions. In particular, the role of lysosomes and lysosomal enzymes in initiation and execution of the apoptotic program has become clear in several models, to the point that the existence of a 'lysosomal pathway of apoptosis' is now generally accepted. This pathway of apoptosis can be activated by death receptors, lipid mediators, and photo-damage. Lysosomal proteases can be released from the lysosomes into the cytosol, where they contribute to the apoptotic cascade upstream of mitochondria. This review focuses on the players and the molecular mechanisms involved in the lysosomal pathway of apoptosis as well as on the importance of this pathway in development and pathology.
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