ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2012
The density of EAAC1 (EAAT3) glutamate transporters expressed by neurons in the mammalian CNS.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers.
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Who cites it
107 citing papers in PubMed, 220 citations in OpenAlex.
- NMDA receptor mediated tonic excitatory currents are elicited by EAAT inhibition on human neocortical pyramidal neurons.Frontiers in synaptic neuroscience · 2026Article
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- Increased Brain Glutathione Levels by Intranasal Insulin Administration.Current issues in molecular biology · 2025Article
- The Glutamate/GABA-Glutamine Cycle: Insights, Updates, and Advances.Journal of neurochemistry · 2025Review
- Regulation Mechanisms of the Glutamate Transporter in the Response of Pacific Oyster upon High-Temperature Stress.International journal of molecular sciences · 2024Article
- A spatiotemporal map of co-receptor signaling networks underlying B cell activation.Cell reports · 2024Article
- Revisiting Glutamate Excitotoxicity in Amyotrophic Lateral Sclerosis and Age-Related Neurodegeneration.International journal of molecular sciences · 2024Review
- Brain energy metabolism: A roadmap for future research.Journal of neurochemistry · 2024Review
- Neuropharmacological insight into preventive intervention in posttraumatic epilepsy based on regulating glutamate homeostasis.CNS neuroscience & therapeutics · 2023Review
- Neuroprotective Potential of L-Glutamate Transporters in Human Induced Pluripotent Stem Cell-Derived Neural Cells against Excitotoxicity.International journal of molecular sciences · 2023Article
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- Symport and antiport mechanisms of human glutamate transporters.Nature communications · 2023Article
- Recent Investigations on Neurotransmitters' Role in Acute White Matter Injury of Perinatal Glia and Pharmacotherapies-Glia Dynamics in Stem Cell Therapy.Molecular neurobiology · 2022Review
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- Reconstitution of GABA, Glycine and Glutamate Transporters.Neurochemical research · 2022Review
- Ceftriaxone as a Novel Therapeutic Agent for Hyperglutamatergic States: Bridging the Gap Between Preclinical Results and Clinical Translation.Frontiers in neuroscience · 2022Review
- Enhancement of Phosphorylation and Transport Activity of the Neuronal Glutamate Transporter Excitatory Amino Acid Transporter 3 by C3bot and a 26mer C3bot Peptide.Frontiers in cellular neuroscience · 2022Article
- Rapid Regulation of Glutamate Transport: Where Do We Go from Here?Neurochemical research · 2022Review
47 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
12 authors at 4 institutions in 3 countries.
Funding
Abstract
The extracellular levels of excitatory amino acids are kept low by the action of the glutamate transporters. Glutamate/aspartate transporter (GLAST) and glutamate transporter-1 (GLT-1) are the most abundant subtypes and are essential for the functioning of the mammalian CNS, but the contribution of the EAAC1 subtype in the clearance of synaptic glutamate has remained controversial, because the density of this transporter in different tissues has not been determined. We used purified EAAC1 protein as a standard during immunoblotting to measure the concentration of EAAC1 in different CNS regions. The highest EAAC1 levels were found in the young adult rat hippocampus. Here, the concentration of EAAC1 was ∼0.013 mg/g tissue (∼130 molecules μm⁻³), 100 times lower than that of GLT-1. Unlike GLT-1 expression, which increases in parallel with circuit formation, only minor changes in the concentration of EAAC1 were observed from E18 to adulthood. In hippocampal slices, photolysis of MNI-D-aspartate (4-methoxy-7-nitroindolinyl-D-aspartate) failed to elicit EAAC1-mediated transporter currents in CA1 pyramidal neurons, and D-aspartate uptake was not detected electron microscopically in spines. Using EAAC1 knock-out mice as negative controls to establish antibody specificity, we show that these relatively small amounts of EAAC1 protein are widely distributed in somata and dendrites of all hippocampal neurons. These findings raise new questions about how so few transporters can influence the activation of NMDA receptors at excitatory synapses.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.