Triheteromeric GluN1/GluN2A/GluN2C NMDARs with Unique Single-Channel Properties Are the Dominant Receptor Population in Cerebellar Granule Cells.

Triheteromeric GluN1/GluN2A/GluN2C NMDARs with Unique Single-Channel Properties Are the Dominant Receptor Population in Cerebellar Granule Cells.
复制标题

DOI:
10.1016/j.neuron.2018.06.010
复制
发表时间:
2018-07-25
期刊:
影响因子:
16.2
通讯作者:
Traynelis SF
Traynelis SF
中科院分区:
医学1区
文献类型:
--
作者:
Bhattacharya S;Khatri A;Swanger SA;DiRaddo JO;Yi F;Hansen KB;Yuan H;Traynelis SF

文献摘要

参考文献

被引文献

相似文献

NMDA 型谷氨酸受体 (NMDAR) 是介导中枢神经系统 (CNS) 兴奋性神经传递的配体门控离子通道。在这里,我们描述了三异体 GluN1/GluN2A/GluN2C 受体的功能和单通道特性,其包含两个 GluN1、一个 GluN2A 和一个 GluN2C 亚基。该 NMDAR 具有三个电导水平,并以类似于 GluN1/GluN2A 受体的突发方式打开,但具有单通道打开时间和打开概率,让人想起 GluN1/GluN2C 受体。 GluN1/GluN2A/GluN2C 受体的失活时间过程介于 GluN1/GluN2A 和 GluN1/GluN2C 受体之间,并且不受 GluN2A 或 GluN2C 支配。我们发现三异体 GluN1/GluN2A/GluN2C 受体是小脑颗粒细胞中主要的 NMDAR,并提出小脑颗粒细胞中 GluN2A 和 GluN2C 的共表达会阻断二异体 GluN1/GluN2C 受体的细胞表面表达。这一对神经元 GluN1/GluN2A/GluN2C 受体的新见解凸显了 CNS 中 NMDAR 信号传导的复杂性。巴塔查里亚等人。显示 NMDA 受体 GluN2C 亚基优先掺入小脑​​颗粒细胞中的三异聚体 GluN1/GluN2A/GluN2C 受体中。三异体 GluN1/GluN2A/GluN2C 受体具有单通道特性,无法从复合亚基中预测。
NMDA-type glutamate receptors (NMDARs) are ligand-gated ion channels that mediate excitatory neurotransmission in the central nervous system (CNS). Here, we describe functional and single channel properties of triheteromeric GluN1/GluN2A/GluN2C receptors, which contain two GluN1, one GluN2A, and one GluN2C subunits. This NMDAR has three conductance levels and opens in bursts similar to GluN1/GluN2A receptors, but with single channel open time and open probability reminiscent of GluN1/GluN2C receptors. The deactivation time course of GluN1/GluN2A/GluN2C receptors is intermediate to GluN1/GluN2A and GluN1/GluN2C receptors and is not dominated by GluN2A or GluN2C. We show that triheteromeric GluN1/GluN2A/GluN2C receptors are the predominant NMDARs in cerebellar granule cells, and propose that co-expression of GluN2A and GluN2C in cerebellar granule cells occludes cell-surface expression of diheteromeric GluN1/GluN2C receptors. This new insight to neuronal GluN1/GluN2A/GluN2C receptors highlights the complexity of NMDAR signaling in the CNS. Bhattacharya et al. show that the NMDA receptor GluN2C subunit is preferentially incorporated into triheteromeric GluN1/GluN2A/GluN2C receptors in cerebellar granule cells. Triheteromeric GluN1/GluN2A/GluN2C receptors have single channel properties that cannot be predicted from the composite subunits.
DOI: 10.1016/s0169-328x(96)00205-7
发表时间: 1997-03-01
期刊: MOLECULAR BRAIN RESEARCH
影响因子: --
作者:
AlGhoul, WM;Meeker, RB;Greenwood, RS
通讯作者: Greenwood, RS
DOI: 10.1523/jneurosci.20-16-05899.2000
发表时间: 2000-08-15
影响因子: 5.3
作者:
Cathala, L;Misra, C;Cull-Candy, S
通讯作者: Cull-Candy, S
DOI: 10.1128/mcb.01044-10
发表时间: 2011-04-01
影响因子: 5.3
作者:
Cai, Lei;Loo, Li Shen;Hong, Wanjin
通讯作者: Hong, Wanjin
DOI: 10.1016/0896-6273(91)90373-8
发表时间: 1991-10-01
期刊: NEURON
影响因子: 16.2
作者:
CLEMENTS, JD;WESTBROOK, GL
通讯作者: WESTBROOK, GL
DOI: 10.1091/mbc.e05-05-0400
发表时间: 2005-12-01
影响因子: 3.3
作者:
Brock, C;Boudier, L;Pin, JP
通讯作者: Pin, JP