GLAST (GLutamate and ASpartate transporter) in human prefrontal cortex; interactome in healthy brains and the expression of GLAST in brains of chronic alcoholics
Abstract
We have analysed post-mortem samples of prefrontal cortex from control and alcoholic human brains by the technique of Western blotting to estimate and compare the expressions of glutamate transporter GLAST (Excitatory Amino Acid Transporter One; EAAT1). Furthermore, using the non-alcoholic prefrontal cortex and custom-made GLAST (EAAT1) antibody we determined GLAST (EAAT1) "interactome" i.e. the set of proteins selectively bound by GLAST (EAAT1). We found that GLAST (EAAT1) was significantly more abundant (about 1.6-fold) in the cortical tissue from alcoholic brains compared to that from non-alcoholic controls. The greatest increase in the level of GLAST (EAAT1) was found in plasma membrane fraction (2.2-fold). Additionally, using the prefrontal cortical tissue from control brains, we identified 38 proteins specifically interacting with GLAST (EAAT1). These can be classified as contributing to the cell structure (6 proteins; 16%), energy and general metabolism (18 proteins; 47%), neurotransmitter metabolism (three proteins; 8%), signalling (6 proteins: 16%), neurotransmitter storage/release at synapses (three proteins; 8%) and calcium buffering (two proteins; 5%). We discuss possible consequences of the increased expression of GLAST (EAAT1) in alcoholic brain tissue and whether or how this could disturb the function of the proteins potentially interacting with GLAST (EAAT1) in vivo. The data represent an extension of our previous proteomic and metabolomic studies of human alcoholism revealing another aspect of the complexity of changes imposed on brain by chronic long-term consumption of ethanol.
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SLC1A3 was downregulated with alcohol consumption in mouse astrocytes but upregulated in the human alcoholic brain.
“SLC1A3 (also called “ GLAST ”) was downregulated with alcohol consumption in mouse astrocytes (20,21) but upregulated in the human alcoholic brain (39) .”
From Single cell transcriptome profiling of the human alcohol-dependent brain (2020) · cites this paper as [39]
SLC1A3 is a glutamate uptake transporter that plays important roles in the neurocircuitry of addiction.
“Interestingly, the top DEG in astrocytes was AC008957.2, a lncRNA that is antisense to the gene encoding SLC1A3 , a glutamate uptake transporter that plays important roles in the neurocircuitry of addiction (38)(39)(40) .”
From Single cell transcriptome profiling of the human alcohol-dependent brain (2020) · cites this paper as [39]
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Single cell transcriptome profiling of the human alcohol-dependent brain
Brenner, E., Tiwari, G. R., Kapoor, M., Liu, Y., Brock, A., & Mayfield, R. D. (2020) · Human Molecular Genetics · doi:10.1093/hmg/ddaa038 · Cited by 118 · see citing works
- Authors
- Kashem, M. A., Sultana, N., Pow, D. V., & Balcar, V. J.
- Affiliations
- The University of Sydney (AU)
- The University of Queensland (AU)
- Venue
- Neurochemistry International
- Publisher
- Elsevier BV
- Published
- 2019-05
- Volume
- 125
- Pages
- 111-116
- ISSN
- 0197-0186 (ISSN-L)
- OpenAlex
- W2916107106
- Cited by
- 14
- References
- 53
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 1 · 2023: 1 · 2021: 2 · 2020: 6
- FWCI
- 0.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurochemistry International (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Keywords
- GLAST, glutamate transporters, prefrontal cortex, chronic alcoholism, protein-protein interaction network, protein-protein interaction, plasma membrane, neurotransmitter metabolism, calcium buffering, postmortem brain
- MeSH terms
- Adult, Aged, Alcoholism, Humans, Male, Middle Aged, Gene Expression, Prefrontal Cortex, Excitatory Amino Acid Transporter 1, Proteomics, Metabolomics, Alcoholics
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