Diacylglycerol kinase ɛ regulates seizure susceptibility and long-term potentiation through arachidonoyl– inositol lipid signaling
Diacylglycerol kinase ɛ regulates seizure susceptibility and long-term potentiation through arachidonoyl– inositol lipid signaling
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二酰甘油激酶 ɛ 通过花生四烯酰肌醇脂质信号传导调节癫痫易感性和长期增强
DOI:
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发表时间:
2001
影响因子:
11.1
通讯作者:
N. Bazan
中科院分区:
文献类型:
--
作者:
E. B. Rodriguez de Turco;W. Tang;M. Topham;F. Sakane;V. Marcheselli;Chu Chen;A. Taketomi;S. Prescott;N. Bazan
Arachidonoyldiacylglycerol (20:4-DAG) is a second messenger derived from phosphatidylinositol 4,5-bisphosphate and generated by stimulation of glutamate metabotropic receptors linked to G proteins and activation of phospholipase C. 20:4-DAG signaling is terminated by its phosphorylation to phosphatidic acid, catalyzed by diacylglycerol kinase (DGK). We have cloned the murine DGKɛ gene that showed, when expressed in COS-7 cells, selectivity for 20:4-DAG. The significance of DGKɛ in synaptic function was investigated in mice with targeted disruption of the DGKɛ. DGKɛ−/− mice showed a higher resistance to eletroconvulsive shock with shorter tonic seizures and faster recovery than DGKɛ+/+ mice. The phosphatidylinositol 4,5-bisphosphate-signaling pathway in cerebral cortex was greatly affected, leading to lower accumulation of 20:4-DAG and free 20:4. Also, long-term potentiation was attenuated in perforant path–dentate granular cell synapses. We propose that DGKɛ contributes to modulate neuronal signaling pathways linked to synaptic activity, neuronal plasticity, and epileptogenesis.
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影响因子:
2.5
作者:
Chen, C;Magee, JC;Bazan, NG
通讯作者:
Bazan, NG
DOI:
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发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bajjalieh,SM;Martin,TF;Floor,E
通讯作者:
Floor,E
DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Prescott,SM;Majerus,PW
通讯作者:
Majerus,PW
DOI:
--
发表时间:
1986
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Narimatsu,S;Soeda,S;Tanaka,T;Kishimoto,Y
通讯作者:
Kishimoto,Y
DOI:
10.1016/0005-2760(85)90223-1
发表时间:
1985
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Nagamatsu,K;Soeda,S;Mori,M;Kishimoto,Y
通讯作者:
Kishimoto,Y