Apoptotic and non-apoptotic roles of caspases in neuronal physiology and pathophysiology.

Neurology Service, Massachusetts General Hospital, 114 16th Street Charlestown, Massachusetts 01029, USA.
Nature Reviews Neuroscience (Impact Factor: 31.38). 05/2012; 13(6):395-406. DOI: 10.1038/nrn3228
Source: PubMed

ABSTRACT Caspases are cysteine proteases that mediate apoptosis, which is a form of regulated cell death that effectively and efficiently removes extra and unnecessary cells during development. In the mature nervous system, caspases are not only involved in mediating cell death but also regulatory events that are important for neural functions, such as axon pruning and synapse elimination, which are necessary to refine mature neuronal circuits. Furthermore, caspases can be reactivated to cause cell death as well as non-lethal changes in neurons during numerous pathological processes. Thus, although a global activation of caspases leads to apoptosis, restricted and localized activation may control normal physiology and pathophysiology in living neurons. This Review explores the multiple roles of caspase activity in neurons.

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