β-Amyloid impairs axonal BDNF retrograde trafficking.
β-Amyloid impairs axonal BDNF retrograde trafficking.
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DOI:
10.1016/j.neurobiolaging.2009.05.012
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发表时间:
2011-05
影响因子:
4.2
通讯作者:
Cotman, Carl W.
中科院分区:
文献类型:
--
作者:
Poon, Wayne W.;Blurton-Jones, Mathew;Tu, Christina H.;Feinberg, Leila M.;Chabrier, Meredith A.;Harris, Joe W.;Jeon, Noo Li;Cotman, Carl W.
The neurotrophin, brain-derived neurotrophic factor (BDNF), is essential for synaptic function, plasticity and neuronal survival. At the axon terminal, when BDNF binds to its receptor, tropomyosin-related kinase B (TrkB), the signal is propagated along the axon to the cell body, via retrograde transport, regulating gene expression and neuronal function. Alzheimer disease (AD) is characterized by early impairments in synaptic function that may result in part from neurotrophin signaling deficits. Growing evidence suggests that soluble beta-amyloid (Aβ) assemblies cause synaptic dysfunction by disrupting both neurotransmitter and neurotrophin signaling. Utilizing a novel microfluidic culture chamber, we demonstrate a BDNF retrograde signaling deficit in AD transgenic mouse neurons (Tg2576) that can be reversed by γ-secretase inhibitors. Using BDNF-GFP, we show that BDNF-mediated TrkB retrograde trafficking is impaired in Tg2576 axons. Furthermore, Aβ oligomers alone impair BDNF retrograde transport. Thus, Aβ reduces BDNF signaling by impairing axonal transport and this may underlie the synaptic dysfunction observed in AD.
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影响因子:
64.8
作者:
Du, JL;Poo, MM
通讯作者:
Poo, MM
DOI:
10.1073/pnas.121119298
发表时间:
2001-06-05
影响因子:
11.1
作者:
Alonso, AD;Zaidi, T;Iqbal, K
通讯作者:
Iqbal, K
影响因子:
5.3
作者:
Genoud, C;Knott, GW;Welker, E
通讯作者:
Welker, E
影响因子:
16.2
作者:
BRAMBLETT, GT;GOEDERT, M;LEE, VMY
通讯作者:
LEE, VMY
DOI:
10.1016/s0169-328x(97)00125-3
发表时间:
1997-10-03
期刊:
MOLECULAR BRAIN RESEARCH
影响因子:
--
作者:
Connor, B;Young, D;Dragunow, M
通讯作者:
Dragunow, M