APP binds DR6 to trigger axon pruning and neuron death via distinct caspases
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چکیده
منابع مشابه
Guidance molecules in axon pruning and cell death.
Axon pruning and neuronal cell death constitute two major regressive events that enable the establishment of fully mature brain architecture and connectivity. Although the cellular mechanisms for these two events are thought to be distinct, recent evidence has indicated the direct involvement of axon guidance molecules, including semaphorins, netrins, and ephrins, in controlling both processes....
متن کاملDeath without caspases, caspases without death.
Apoptosis is a conserved cell-death process displaying characteristic morphological and molecular changes including activation of caspase proteases. Recent work challenges the accepted roles of these proteases. New investigations in mice and the nematode Caenorhabditis elegans suggest that there could be caspase-independent pathways leading to cell death. In addition, another type of cell death...
متن کاملA death receptor 6-amyloid precursor protein pathway regulates synapse density in the mature CNS but does not contribute to Alzheimer's disease-related pathophysiology in murine models.
Recent studies implicate death receptor 6 (DR6) in an amyloid precursor protein (APP)-dependent pathway regulating developmental axon pruning, and in a pruning pathway operating during plastic rearrangements in adult brain. DR6 has also been suggested to mediate toxicity in vitro of Aβ peptides derived from APP. Given the link between APP, Aβ, and Alzheimer's disease (AD), these findings have r...
متن کاملDistinct Pathways Mediate Axon Degeneration during Apoptosis and Axon-Specific Pruning
Neurons can activate pathways that destroy the whole cell via apoptosis or selectively degenerate only the axon (pruning). Both apoptosis and axon degeneration require Bax and caspases. Here we demonstrate that despite this overlap, the pathways mediating axon degeneration during apoptosis versus axon pruning are distinct. While Caspase-6 is activated in axons following nerve growth factor depr...
متن کاملAmyloid precursor protein cleavage-dependent and -independent axonal degeneration programs share a common nicotinamide mononucleotide adenylyltransferase 1-sensitive pathway.
Axonal degeneration is a hallmark of many debilitating neurological disorders and is thought to be regulated by mechanisms distinct from those governing cell body death. Recently, caspase 6 activation via amyloid precursor protein (APP) cleavage and activation of DR6 was discovered to induce axon degeneration after NGF withdrawal. We tested whether this pathway is involved in axonal degeneratio...
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ژورنال
عنوان ژورنال: Nature
سال: 2009
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature07767