Evidence map›Paper›PMID 22645130›Full record

ArticleThe Journal of biological chemistry2012

GPR30 regulates glutamate transporter GLT-1 expression in rat primary astrocytes.

Eunsook Lee, Marta Sidoryk-Wêgrzynowicz, Ning Wang, Anton Webb, Deok-Soo Son, Kyuwon Lee, Michael Aschner

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
3.5field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 91 citations in OpenAlex.

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  13. The Resurrection of Phenotypic Drug Discovery.ACS medicinal chemistry letters · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Eunsook LeeDepartment of Physiology, Meharry Medical College, Nashville, Tennessee 37208, USA. elee@mmc.edu
Marta Sidoryk-Wêgrzynowicz
Ning Wang
Anton Webb
Deok-Soo Son
Kyuwon Lee
Michael Aschner
Meharry Medical College · USVanderbilt University · USHarvard University · US

Funding

Mechanisms of Manganese NeurotoxicityR01ES010563 · NIEHS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Michael Aschner, Aaron B Bowman · 2001 to 2026
$11.9M
Estrogen-neuroprotection due to astroglial Glu transporters occurs via TGF-a/b1SC1GM089630 · NIGMS · MEHARRY MEDICAL COLLEGE · PI LEE, EUN SOOK YU · 2010 to 2014
$1.4M
NIEHS NIH HHS ES R01 10563NIEHS NIH HHS R01 ES010563NIGMS NIH HHS SC1 GM089630
6 · The paper itself

Abstract

The G protein-coupled estrogen receptor GPR30 contributes to the neuroprotective effects of 17β-estradiol (E2); however, the mechanisms associated with this protection have yet to be elucidated. Given that E2 increases astrocytic expression of glutamate transporter-1 (GLT-1), which would prevent excitotoxic-induced neuronal death, we proposed that GPR30 mediates E2 action on GLT-1 expression. To investigate this hypothesis, we examined the effects of G1, a selective agonist of GPR30, and GPR30 siRNA on astrocytic GLT-1 expression, as well as glutamate uptake in rat primary astrocytes, and explored potential signaling pathways linking GPR30 to GLT-1. G1 increased GLT-1 protein and mRNA levels, subject to regulation by both MAPK and PI3K signaling. Inhibition of TGF-α receptor suppressed the G1-induced increase in GLT-1 expression. Silencing GPR30 reduced the expression of both GLT-1 and TGF-α and abrogated the G1-induced increase in GLT-1 expression. Moreover, the G1-induced increase in GLT-1 protein expression was abolished by a protein kinase A inhibitor and an NF-κB inhibitor. G1 also enhanced cAMP response element-binding protein (CREB), as well as both NF-κB p50 and NF-κB p65 binding to the GLT-1 promoter. Finally, to model dysfunction of glutamate transporters, manganese was used, and G1 was found to attenuate manganese-induced impairment in GLT-1 protein expression and glutamate uptake. Taken together, the present data demonstrate that activation of GPR30 increases GLT-1 expression via multiple pathways, suggesting that GPR30 is worthwhile as a potential target to be explored for developing therapeutics of excitotoxic neuronal injury.

Indexed as

AnimalsAstrocytesBase SequenceBlotting, WesternCells, CulturedCyclic AMP Response Element-Binding ProteinDNA PrimersExcitatory Amino Acid Transporter 2Gene SilencingImmunohistochemistryPolymerase Chain ReactionProtein KinasesRatsRats, Sprague-DawleyReceptors, G-Protein-CoupledRNA, Small InterferingCyclic AMP Response Element-Binding ProteinDNA PrimersExcitatory Amino Acid Transporter 2Gper1 protein, ratProtein KinasesReceptors, G-Protein-CoupledRNA, Small InterferingSlc1a2 protein, rat

Identifiers

PMID22645130
PMCPMC3411019
OpenAlexW1998695362

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.