TY - JOUR
T1 - Signaling mechanisms regulating Wallerian degeneration
AU - Freeman, Marc R.
PY - 2014/8
Y1 - 2014/8
N2 - Wallerian degeneration (WD) occurs after an axon is cut or crushed and entails the disintegration and clearance of the severed axon distal to the injury site. WD was initially thought to result from the passive wasting away of the distal axonal fragment, presumably because it lacked a nutrient supply from the cell body. The discovery of the slow Wallerian degeneration (Wlds) mutant mouse, in which distal severed axons survive intact for weeks rather than only one to two days, radically changed our thoughts on the autonomy of axon survival. Wlds taught us that under some conditions the axonal compartment can survive for weeks after axotomy without a cell body. The phenotypic and molecular characterization of WldS and current models for WldS molecular function are reviewed herein-the mechanism(s) by which WldS spares severed axons remains unresolved. However, recent studies inspired by Wlds have led to the identification of the first 'axon death' signaling molecules whose endogenous activities promote axon destruction during WD.
AB - Wallerian degeneration (WD) occurs after an axon is cut or crushed and entails the disintegration and clearance of the severed axon distal to the injury site. WD was initially thought to result from the passive wasting away of the distal axonal fragment, presumably because it lacked a nutrient supply from the cell body. The discovery of the slow Wallerian degeneration (Wlds) mutant mouse, in which distal severed axons survive intact for weeks rather than only one to two days, radically changed our thoughts on the autonomy of axon survival. Wlds taught us that under some conditions the axonal compartment can survive for weeks after axotomy without a cell body. The phenotypic and molecular characterization of WldS and current models for WldS molecular function are reviewed herein-the mechanism(s) by which WldS spares severed axons remains unresolved. However, recent studies inspired by Wlds have led to the identification of the first 'axon death' signaling molecules whose endogenous activities promote axon destruction during WD.
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U2 - 10.1016/j.conb.2014.05.001
DO - 10.1016/j.conb.2014.05.001
M3 - Review article
C2 - 24907513
AN - SCOPUS:84901847736
SN - 0959-4388
VL - 27
SP - 224
EP - 231
JO - Current Opinion in Neurobiology
JF - Current Opinion in Neurobiology
ER -