FAIM-L regulation of XIAP degradation modulates Synaptic Long-Term Depression and Axon Degeneration.
FAIM-L regulation of XIAP degradation modulates Synaptic Long-Term Depression and Axon Degeneration.
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DOI:
10.1038/srep35775
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发表时间:
2016-10-21
影响因子:
4.6
通讯作者:
Comella JX
中科院分区:
文献类型:
--
作者:
Martínez-Mármol R;Barneda-Zahonero B;Soto D;Andrés RM;Coccia E;Gasull X;Planells-Ferrer L;Moubarak RS;Soriano E;Comella JX
Caspases have recently emerged as key regulators of axonal pruning and degeneration and of long-term depression (LTD), a long-lasting form of synaptic plasticity. However, the mechanism underlying these functions remains unclear. In this context, XIAP has been shown to modulate these processes. The neuron-specific form of FAIM protein (FAIM-L) is a death receptor antagonist that stabilizes XIAP protein levels, thus preventing death receptor-induced neuronal apoptosis. Here we show that FAIM-L modulates synaptic transmission, prevents chemical-LTD induction in hippocampal neurons, and thwarts axon degeneration after nerve growth factor (NGF) withdrawal. Additionally, we demonstrate that the participation of FAIM-L in these two processes is dependent on its capacity to stabilize XIAP protein levels. Our data reveal FAIM-L as a regulator of axonal degeneration and synaptic plasticity.
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