Journal
CANCER BIOLOGY & THERAPY
Volume 5, Issue 7, Pages 763-765Publisher
LANDES BIOSCIENCE
DOI: 10.4161/cbt.5.7.3228
Keywords
apoptosis; mitochondoria; caspase-3; caspase-7; knock-out mice
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Apoptosis is a cell suicide program that is initiated after cells are exposed to cytotoxic stresses including UV, IR irradiation, chemotherapeutic drugs, hypoxia, serum deprivation and TRAIL. Caspases are the central components of this process. In mammals, caspases involved in apoptotic responses are classified into two groups according to their function and structure. The first group is termed initiator cospases (caspase-2, 8, 9, 10) that contain N-terminal adapter domains which allow for auto-cleavage and activation of downstream caspases. The second group is termed effector or executioner cospases (caspase-3, -6, -7) that lack N-terminal adapter domains and are cleaved and activated by initiator caspases. Lakhani et al. (Science 2006, 311:847-51) have reported that caspase-3 and -7 regulate mitochondorial events in the apoptotic pathway. In this journal club, we summarize the results of the article and include some open questions left in the study.
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