REGULATION OF THE EXPRESSION OF NR1 NMDA GLUTAMATE-RECEPTOR SUBUNITS DURING HIPPOCAMPAL LTP

被引：38

作者：

THOMAS, KL ^{[1
]}

DAVIS, S ^{[1
]}

LAROCHE, S ^{[1
]}

HUNT, SP ^{[1
]}

机构：

[1] UNIV PARIS 11,NEUROBIOL APPRENTISSAGE & MEMOIRE LAB,CNRS,URA 1491,F-91405 ORSAY,FRANCE

来源：

NEUROREPORT | 1994年 / 6卷 / 01期

关键词：

NMDA RECEPTORS; NR1; SUBUNITS; LONG-TERM POTENTIATION; HIPPOCAMPUS; GAMMA PROTEIN KINASE C; RAT;

D O I：

10.1097/00001756-199412300-00031

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

SEVERAL isoforms of the NMDA receptor 1 (NR1) subunits of the ionotropic NMDA (N-methyl-D-aspartate) glutamate receptor contain a consensus site for phosphorylation by protein kinase C (PKC) which, once phosphorylated results in an increased conductance through the receptor channel. Using in situ hybridization, we investigated the expression of NR1 subunits sensitive or insensitive to modification by PKC in the granule cells of the dentate gyrus of the hippocampus, following the induction of long-term potentiation (LTP), A selective 50% increase only in the levels of mRNA NR1 subunits containing this consensus sequence for PKC phosphorylation was seen 48 h after LTP induction. The change in the expression of PKC-sensitive NR1 subunits may be the molecular basis for the increased response of the postsynaptic cell to released glutamate during the maintenance phase of LTP.

引用

页码：119 / 123

页数：5

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