Presynaptic regulation of astroglial excitatory neurotransmitter transporter GLT1.
Presynaptic regulation of astroglial excitatory neurotransmitter transporter GLT1.
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星形胶质细胞兴奋性神经递质转运蛋白 GLT1 的突触前调节。
DOI:
10.1016/j.neuron.2009.02.010
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发表时间:
2009-03-26
期刊:
影响因子:
16.2
通讯作者:
Rothstein, Jeffrey D.
中科院分区:
文献类型:
--
作者:
Yang, Yongjie;Gozen, Oguz;Watkins, Andrew;Lorenzini, Ileana;Lepore, Angelo;Gao, Yuanzheng;Vidensky, Svetlana;Brennan, Jean;Poulsen, David;Park, Jeong Won;Jeon, Noo Li;Robinson, Michael B.;Rothstein, Jeffrey D.
The neuron-astrocyte synaptic complex is a fundamental operational unit of the nervous system. Astroglia play a central role in the regulation of synaptic glutamate, via neurotransmitter transport by GLT1/EAAT2. The astroglial mechanisms underlying this essential neuron-glial communication are not known. Here we show that presynaptic terminals are sufficient and necessary for GLT1/EAAT2 transcriptional activation and have identified the molecular pathway that regulates astroglial responses to presynaptic input. Presynaptic terminals regulate astroglial GLT1/EAAT2 via kappa B-motif binding phosphoprotein (KBBP), the mouse homologue of human heterogeneous nuclear ribonucleoprotein K (hnRNP K), which binds to an essential element of GLT1/EAAT2 promoter. This neuron-stimulated factor is required for GLT1/EATT2 transcriptional activation and is responsible for astroglial alterations in neural injury. Denervation of neuron-astrocyte signaling in vivo, by acute corticospinal tract transection, ricin-induced motor neuron death, or chronic neurodegeneration in amyotrophic lateral sclerosis (ALS) all result in reduced astroglial KBBP expression and transcriptional dysfunction of astroglial transporter expression. Our studies indicate that presynaptic elements dynamically coordinate normal astroglial function and also provide a fundamental signaling mechanism by which altered neuronal function and injury leads to dysregulated astroglia in CNS disease.
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影响因子:
25
作者:
Arnth-Jensen, N;Jabaudon, D;Scanziani, M
通讯作者:
Scanziani, M
DOI:
10.1007/bf00325030
发表时间:
1968-01-01
期刊:
ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE
影响因子:
--
作者:
BLINZING.K;KREUTZBE.G
通讯作者:
KREUTZBE.G
影响因子:
5.3
作者:
Regan, Melissa R.;Huang, Yanhua H.;Rothstein, Jeffrey D.
通讯作者:
Rothstein, Jeffrey D.
影响因子:
2.5
作者:
Berger, UV;DeSilva, TM;Rosenberg, PA
通讯作者:
Rosenberg, PA
DOI:
10.1073/pnas.032539299
发表时间:
2002-02-05
影响因子:
11.1
作者:
Howland, DS;Liu, J;Rothstein, JD
通讯作者:
Rothstein, JD