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Previous Article
The Journal of Neuroscience, May 15, 1999, 19(10):4180-4188
The Incorporation of NMDA Receptors with a Distinct Subunit
Composition at Nascent Hippocampal Synapses In Vitro
Kenneth R.
Tovar and
Gary L.
Westbrook
Vollum Institute, Oregon Health Sciences University, Portland,
Oregon 97201-3098
Activity-dependent synaptic rearrangements during CNS development
require NMDA receptor activation. The control of NMDA receptor function
by developmentally regulated subunit expression has been proposed as
one mechanism for this receptor dependence. We examined the phenotype
of synaptic and extrasynaptic NMDA receptors during the development of
synaptic load using the NMDA receptor 2B (NR2B)-selective antagonist
ifenprodil. In cultured rat hippocampal neurons when relatively few
synapses had formed, the ifenprodil block of EPSCs was less than
whole-cell currents, the latter of which included both synaptic and
extrasynaptic receptors. At the same developmental stage, we found that
extrasynaptic receptors outnumbered synaptic receptors by 3:1; thus
whole-cell currents were dominated by the extrasynaptic population. We
used the macroscopic kinetics of ifenprodil block to distinguish
between the receptor populations. The ifenprodil kinetics of whole-cell
currents from neurons before and during the development of synaptic
load was comparable with that of whole-cell currents in HEK293 cells
transfected with NR1 and NR2B cDNA, indicating that extrasynaptic
receptors are largely NR1/NR2B heteromers. In contrast, synaptic
receptors included both a highly ifenprodil-sensitive (NR1/NR2B)
component as well as a second population with lower ifenprodil
sensitivity; the reduced ifenprodil block of EPSCs was attributable to
synaptic receptors with lower ifenprodil sensitivity rather than to the appearance of ifenprodil-insensitive (NR1/NR2A) receptors. Our data
indicate that the synaptic NMDA receptor complement changes quickly
after synapse formation. We suggest that synapses containing predominately NR1/NR2B heteromers represent "immature" sites, whereas mature sites express NMDA receptors with a distinct, presumably triheteromeric, subunit composition.
Key words:
hippocampus; ifenprodil; NMDA receptors; patch clamp; synapse formation; synaptic load
Copyright © 1999 Society for Neuroscience 0270-6474/99/19104180-09$05.00/0
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M. E. Calcagnotto and S. C. Baraban
Prolonged NMDA-Mediated Responses, Altered Ifenprodil Sensitivity, and Epileptiform-Like Events in the Malformed Hippocampus of Methylazoxymethanol Exposed Rats
J Neurophysiol,
July 1, 2005;
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[Abstract]
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A. Sobczyk, V. Scheuss, and K. Svoboda
NMDA Receptor Subunit-Dependent [Ca2+] Signaling in Individual Hippocampal Dendritic Spines
J. Neurosci.,
June 29, 2005;
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[Abstract]
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E. Y. Yuen, Q. Jiang, P. Chen, Z. Gu, J. Feng, and Z. Yan
Serotonin 5-HT1A Receptors Regulate NMDA Receptor Channels through a Microtubule-Dependent Mechanism
J. Neurosci.,
June 8, 2005;
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C.-H. Yang, C.-C. Huang, and K.-S. Hsu
Behavioral Stress Enhances Hippocampal CA1 Long-Term Depression through the Blockade of the Glutamate Uptake
J. Neurosci.,
April 27, 2005;
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K. Nakayama, K. Kiyosue, and T. Taguchi
Diminished Neuronal Activity Increases Neuron-Neuron Connectivity Underlying Silent Synapse Formation and the Rapid Conversion of Silent to Functional Synapses
J. Neurosci.,
April 20, 2005;
25(16):
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M. Mameli, M. Carta, L. D. Partridge, and C. F. Valenzuela
Neurosteroid-Induced Plasticity of Immature Synapses via Retrograde Modulation of Presynaptic NMDA Receptors
J. Neurosci.,
March 2, 2005;
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Y. Aracava, E. F. R. Pereira, A. Maelicke, and E. X. Albuquerque
Memantine Blocks {alpha}7* Nicotinic Acetylcholine Receptors More Potently Than N-Methyl-D-aspartate Receptors in Rat Hippocampal Neurons
J. Pharmacol. Exp. Ther.,
March 1, 2005;
312(3):
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[Abstract]
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K. Erreger, S. M Dravid, T. G Banke, D. J. A Wyllie, and S. F Traynelis
Subunit-specific gating controls rat NR1/NR2A and NR1/NR2B NMDA channel kinetics and synaptic signalling profiles
J. Physiol.,
March 1, 2005;
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E. A. Waxman and D. R. Lynch
N-methyl-D-aspartate Receptor Subtypes: Multiple Roles in Excitotoxicity and Neurological Disease
Neuroscientist,
February 1, 2005;
11(1):
37 - 49.
[Abstract]
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Y. N. Dong, E. A. Waxman, and D. R. Lynch
Interactions of Postsynaptic Density-95 and the NMDA Receptor 2 Subunit Control Calpain-Mediated Cleavage of the NMDA Receptor
J. Neurosci.,
December 8, 2004;
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M. Townsend, Y. Liu, and M. Constantine-Paton
Retina-Driven Dephosphorylation of the NR2A Subunit Correlates with Faster NMDA Receptor Kinetics at Developing Retinocollicular Synapses
J. Neurosci.,
December 8, 2004;
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Y. Lin, V. A. Skeberdis, A. Francesconi, M. V. L. Bennett, and R. S. Zukin
Postsynaptic Density Protein-95 Regulates NMDA Channel Gating and Surface Expression
J. Neurosci.,
November 10, 2004;
24(45):
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L. Li, T. H. Murphy, M. R. Hayden, and L. A. Raymond
Enhanced Striatal NR2B-Containing N-Methyl-D-Aspartate Receptor-Mediated Synaptic Currents in a Mouse Model of Huntington Disease
J Neurophysiol,
November 1, 2004;
92(5):
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S. G. Cull-Candy and D. N. Leszkiewicz
Role of Distinct NMDA Receptor Subtypes at Central Synapses
Sci. Signal.,
October 19, 2004;
2004(255):
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[Abstract]
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X.-B. Liu, K. D. Murray, and E. G. Jones
Switching of NMDA Receptor 2A and 2B Subunits at Thalamic and Cortical Synapses during Early Postnatal Development
J. Neurosci.,
October 6, 2004;
24(40):
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L. C. Faria and I. Mody
Protective Effect of Ifenprodil Against Spreading Depression in the Mouse Entorhinal Cortex
J Neurophysiol,
October 1, 2004;
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D. A. Rusakov, A. Scimemi, M. C. Walker, and D. M. Kullmann
Comment on "Role of NMDA Receptor Subtypes in Governing the Direction of Hippocampal Synaptic Plasticity"
Science,
September 24, 2004;
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1912b - 1912b.
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T. P. Wong, L. Liu, M. Sheng, and Y. T. Wang
Response to Comment on "Role of NMDA Receptor Subtypes in Governing the Direction of Hippocampal Synaptic Plasticity"
Science,
September 24, 2004;
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P. Washbourne, X.-B. Liu, E. G. Jones, and A. K. McAllister
Cycling of NMDA Receptors during Trafficking in Neurons before Synapse Formation
J. Neurosci.,
September 22, 2004;
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P. V. Massey, B. E. Johnson, P. R. Moult, Y. P. Auberson, M. W. Brown, E. Molnar, G. L. Collingridge, and Z. I. Bashir
Differential Roles of NR2A and NR2B-Containing NMDA Receptors in Cortical Long-Term Potentiation and Long-Term Depression
J. Neurosci.,
September 8, 2004;
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P. E. Bickler
Clinical perspectives: neuroprotection lessons from hypoxia-tolerant organisms
J. Exp. Biol.,
August 15, 2004;
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N. A. Lozovaya, S. E. Grebenyuk, T. Sh. Tsintsadze, B. Feng, D. T. Monaghan, and O. A. Krishtal
Extrasynaptic NR2B and NR2D subunits of NMDA receptors shape 'superslow' afterburst EPSC in rat hippocampus
J. Physiol.,
July 15, 2004;
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G. Lavezzari, J. McCallum, C. M. Dewey, and K. W. Roche
Subunit-Specific Regulation of NMDA Receptor Endocytosis
J. Neurosci.,
July 14, 2004;
24(28):
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L. M. Hawkins, K. Prybylowski, K. Chang, C. Moussan, F. A. Stephenson, and R. J. Wenthold
Export from the Endoplasmic Reticulum of Assembled N-Methyl-D-aspartic Acid Receptors Is Controlled by a Motif in the C Terminus of the NR2 Subunit
J. Biol. Chem.,
July 9, 2004;
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V. M. Andre, J. Flores-Hernandez, C. Cepeda, A. J. Starling, S. Nguyen, M. K. Lobo, H. V. Vinters, M. S. Levine, and G. W. Mathern
NMDA Receptor Alterations in Neurons from Pediatric Cortical Dysplasia Tissue
Cereb Cortex,
June 1, 2004;
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634 - 646.
[Abstract]
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A. Scimemi, A. Fine, D. M. Kullmann, and D. A. Rusakov
NR2B-Containing Receptors Mediate Cross Talk among Hippocampal Synapses
J. Neurosci.,
May 19, 2004;
24(20):
4767 - 4777.
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L. Liu, T. P. Wong, M. F. Pozza, K. Lingenhoehl, Y. Wang, M. Sheng, Y. P. Auberson, and Y. T. Wang
Role of NMDA Receptor Subtypes in Governing the Direction of Hippocampal Synaptic Plasticity
Science,
May 14, 2004;
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K. Ning, L. Pei, M. Liao, B. Liu, Y. Zhang, W. Jiang, J. G. Mielke, L. Li, Y. Chen, Y. H. El-Hayek, et al.
Dual Neuroprotective Signaling Mediated by Downregulating Two Distinct Phosphatase Activities of PTEN
J. Neurosci.,
April 21, 2004;
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K. Prybylowski and R. J. Wenthold
N-Methyl-D-aspartate Receptors: Subunit Assembly and Trafficking to the Synapse
J. Biol. Chem.,
March 12, 2004;
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K. L. Simpkins, R. P. Guttmann, Y. Dong, Z. Chen, S. Sokol, R. W. Neumar, and D. R. Lynch
Selective Activation Induced Cleavage of the NR2B Subunit by Calpain
J. Neurosci.,
December 10, 2003;
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B. Li, Y. Otsu, T. H. Murphy, and L. A. Raymond
Developmental Decrease in NMDA Receptor Desensitization Associated with Shift to Synapse and Interaction with Postsynaptic Density-95
J. Neurosci.,
December 3, 2003;
23(35):
11244 - 11254.
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G. Kohr, V. Jensen, H. J. Koester, A. L. A. Mihaljevic, J. K. Utvik, A. Kvello, O. P. Ottersen, P. H. Seeburg, R. Sprengel, and O. Hvalby
Intracellular Domains of NMDA Receptor Subtypes Are Determinants for Long-Term Potentiation Induction
J. Neurosci.,
November 26, 2003;
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F. Zinebi, J. Xie, J. Liu, R. T. Russell, J. P. Gallagher, M. G. McKernan, and P. Shinnick-Gallagher
NMDA Currents and Receptor Protein Are Downregulated in the Amygdala during Maintenance of Fear Memory
J. Neurosci.,
November 12, 2003;
23(32):
10283 - 10291.
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S. S. Kumar and J. R. Huguenard
Pathway-Specific Differences in Subunit Composition of Synaptic NMDA Receptors on Pyramidal Neurons in Neocortex
J. Neurosci.,
November 5, 2003;
23(31):
10074 - 10083.
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N. O. Dalby and I. Mody
Activation of NMDA Receptors in Rat Dentate Gyrus Granule Cells by Spontaneous and Evoked Transmitter Release
J Neurophysiol,
August 1, 2003;
90(2):
786 - 797.
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M. Lopez de Armentia and P. Sah
Development and Subunit Composition of Synaptic NMDA Receptors in the Amygdala: NR2B Synapses in the Adult Central Amygdala
J. Neurosci.,
July 30, 2003;
23(17):
6876 - 6883.
[Abstract]
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Y. Yoshimura, T. Ohmura, and Y. Komatsu
Two Forms of Synaptic Plasticity with Distinct Dependence on Age, Experience, and NMDA Receptor Subtype in Rat Visual Cortex
J. Neurosci.,
July 23, 2003;
23(16):
6557 - 6566.
[Abstract]
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S. G. Brickley, C. Misra, M. H. S. Mok, M. Mishina, and S. G. Cull-Candy
NR2B and NR2D Subunits Coassemble in Cerebellar Golgi Cells to Form a Distinct NMDA Receptor Subtype Restricted to Extrasynaptic Sites
J. Neurosci.,
June 15, 2003;
23(12):
4958 - 4966.
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S. Ortinau, B. Laube, and H. Zimmermann
ATP Inhibits NMDA Receptors after Heterologous Expression and in Cultured Hippocampal Neurons and Attenuates NMDA-Mediated Neurotoxicity
J. Neurosci.,
June 15, 2003;
23(12):
4996 - 5003.
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M. Fagiolini, H. Katagiri, H. Miyamoto, H. Mori, S. G. N. Grant, M. Mishina, and T. K. Hensch
Separable features of visual cortical plasticity revealed by N-methyl-D-aspartate receptor 2A signaling
PNAS,
March 4, 2003;
100(5):
2854 - 2859.
[Abstract]
[Full Text]
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D. E. Chapman, K. A. Keefe, and K. S. Wilcox
Evidence for Functionally Distinct Synaptic NMDA Receptors in Ventromedial Versus Dorsolateral Striatum
J Neurophysiol,
January 1, 2003;
89(1):
69 - 80.
[Abstract]
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