Phosphorylation in the amino terminus of tau prevents inhibition of anterograde axonal transport.
Phosphorylation in the amino terminus of tau prevents inhibition of anterograde axonal transport.
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DOI:
10.1016/j.neurobiolaging.2011.06.006
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发表时间:
2012-04
影响因子:
4.2
通讯作者:
Brady ST
中科院分区:
文献类型:
--
作者:
Kanaan NM;Morfini G;Pigino G;LaPointe NE;Andreadis A;Song Y;Leitman E;Binder LI;Brady ST
Alzheimer’s disease (AD) and other tauopathies are characterized by fibrillar inclusions composed of the microtubule-associated protein, tau. Recently, we demonstrated that the N-terminus of tau (aa 2–18) in filamentous aggregates or N-terminal tau isoforms activates a signaling cascade involving protein phosphatase 1 and glycogen synthase kinase 3 that results in inhibition of anterograde fast axonal transport (FAT). We have termed the functional motif comprised of aa 2–18 in tau the phosphatase-activating domain or PAD. Here, we show that phosphorylation of tau at tyrosine 18, which is a fyn phosphorylation site within PAD, prevents inhibition of anterograde FAT induced by both filamentous tau and 6D tau. Moreover, Fyn-mediated phosphorylation of tyrosine 18 is reduced in disease-associated forms of tau (e.g. tau filaments). A novel PAD-specific monoclonal antibody revealed that exposure of PAD in tau occurs before and more frequently than tyrosine 18 phosphorylation in the evolution of tangle formation in AD. These results indicate that N-terminal phosphorylation may constitute a regulatory mechanism that controls tau-mediated inhibition of anterograde FAT in AD.
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影响因子:
1.7
作者:
Dessi, F;Colle, MA;Duyckaerts, C
通讯作者:
Duyckaerts, C
影响因子:
2.5
作者:
GOEDERT, M;JAKES, R;VANMECHELEN, E
通讯作者:
VANMECHELEN, E
影响因子:
25
作者:
Bosco, Daryl A.;Morfini, Gerardo;Karabacak, N. Murat;Song, Yuyu;Gros-Louis, Francois;Pasinelli, Piera;Goolsby, Holly;Fontaine, Benjamin A.;Lemay, Nathan;McKenna-Yasek, Diane;Frosch, Matthew P.;Agar, Jeffrey N.;Julien, Jean-Pierre;Brady, Scott T.;Brown, Robert H., Jr.
通讯作者:
Brown, Robert H., Jr.
DOI:
10.1023/b:neur.0000044190.96426.b9
发表时间:
2004-05-01
期刊:
JOURNAL OF NEUROCYTOLOGY
影响因子:
--
作者:
Berry, RW;Sweet, AP;Binder, LI
通讯作者:
Binder, LI
影响因子:
4.8
作者:
Carmel, G;Mager, EM;Kuret, J
通讯作者:
Kuret, J