Tau exacerbates excitotoxic brain damage in an animal model of stroke.
Tau exacerbates excitotoxic brain damage in an animal model of stroke.
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DOI:
10.1038/s41467-017-00618-0
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发表时间:
2017-09-07
影响因子:
16.6
通讯作者:
Ittner LM
中科院分区:
文献类型:
--
作者:
Bi M;Gladbach A;van Eersel J;Ittner A;Przybyla M;van Hummel A;Chua SW;van der Hoven J;Lee WS;Müller J;Parmar J;Jonquieres GV;Stefen H;Guccione E;Fath T;Housley GD;Klugmann M;Ke YD;Ittner LM
Neuronal excitotoxicity induced by aberrant excitation of glutamatergic receptors contributes to brain damage in stroke. Here we show that tau-deficient (tau−/−) mice are profoundly protected from excitotoxic brain damage and neurological deficits following experimental stroke, using a middle cerebral artery occlusion with reperfusion model. Mechanistically, we show that this protection is due to site-specific inhibition of glutamate-induced and Ras/ERK-mediated toxicity by accumulation of Ras-inhibiting SynGAP1, which resides in a post-synaptic complex with tau. Accordingly, reducing SynGAP1 levels in tau−/− mice abolished the protection from pharmacologically induced excitotoxicity and middle cerebral artery occlusion-induced brain damage. Conversely, over-expression of SynGAP1 prevented excitotoxic ERK activation in wild-type neurons. Our findings suggest that tau mediates excitotoxic Ras/ERK signaling by controlling post-synaptic compartmentalization of SynGAP1. Excitotoxicity contributes to neuronal injury following stroke. Here the authors show that tau promotes excitotoxicity by a post-synaptic mechanism, involving site-specific control of ERK activation, in a mouse model of stroke.
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DOI:
10.1523/jneurosci.3191-12.2013
发表时间:
2013-01-23
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Holth JK;Bomben VC;Reed JG;Inoue T;Younkin L;Younkin SG;Pautler RG;Botas J;Noebels JL
通讯作者:
Noebels JL
影响因子:
6.3
作者:
GEDDES, JW;SCHWAB, C;PETTIGREW, LC
通讯作者:
PETTIGREW, LC
影响因子:
16.2
作者:
GOEDERT, M;SPILLANTINI, MG;CROWTHER, RA
通讯作者:
CROWTHER, RA
影响因子:
4.4
作者:
Gordon-Krajcer, W.;Kozniewska, E.;Ksiezak-Reding, H.
通讯作者:
Ksiezak-Reding, H.
影响因子:
158.5
作者:
Hacke, Werner;Kaste, Markku;Toni, Danilo
通讯作者:
Toni, Danilo