Evidence map›Paper›PMID 27043281›Full record

ArticleThe Journal of clinical investigation2016

A2A adenosine receptor modulates drug efflux transporter P-glycoprotein at the blood-brain barrier.

Do-Geun Kim, Margaret S Bynoe

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
7.5field-weighted citation impact, top 3% 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

47 citing papers in PubMed, 87 citations in OpenAlex.

  1. The effect of an adenosine AFluids and barriers of the CNS · 2018
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  9. The mCell death and differentiation · 2025
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  13. The Brain-Heart Network of Syncope.International journal of molecular sciences · 2024
    Review
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  15. Article
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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

2 authors.

Do-Geun Kim
Margaret S Bynoe

Funding

Brain endothelial cell function under adenosine receptor signaling directiveR01NS078018 · NINDS · CORNELL UNIVERSITY · PI BYNOE, MARGARET S. · 2012 to 2016
$2.0M
CD-73 adenosine signaling in the central nervous system in disease and healthR01NS063011 · NINDS · CORNELL UNIVERSITY · PI BYNOE, MARGARET S. · 2008 to 2012
$1.8M
NINDS NIH HHS R01 NS063011NINDS NIH HHS R01 NS078018
6 · The paper itself

Abstract

The blood-brain barrier (BBB) protects the brain from toxic substances within the peripheral circulation. It maintains brain homeostasis and is a hurdle for drug delivery to the CNS to treat neurodegenerative diseases, including Alzheimer's disease and brain tumors. The drug efflux transporter P-glycoprotein (P-gp) is highly expressed on brain endothelial cells and blocks the entry of most drugs delivered to the brain. Here, we show that activation of the A2A adenosine receptor (AR) with an FDA-approved A2A AR agonist (Lexiscan) rapidly and potently decreased P-gp expression and function in a time-dependent and reversible manner. We demonstrate that downmodulation of P-gp expression and function coincided with chemotherapeutic drug accumulation in brains of WT mice and in primary mouse and human brain endothelial cells, which serve as in vitro BBB models. Lexiscan also potently downregulated the expression of BCRP1, an efflux transporter that is highly expressed in the CNS vasculature and other tissues. Finally, we determined that multiple pathways, including MMP9 cleavage and ubiquitinylation, mediated P-gp downmodulation. Based on these data, we propose that A2A AR activation on BBB endothelial cells offers a therapeutic window that can be fine-tuned for drug delivery to the brain and has potential as a CNS drug-delivery technology.

Indexed as

Gene Expression RegulationAdenosine A2 Receptor AgonistsAnimalsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily G, Member 2Blood-Brain BarrierCell LineEndothelial CellsHumansMatrix Metalloproteinase 9MiceNeoplasm ProteinsProteolysisPurinesPyrazolesReceptor, Adenosine A2AABCB1 protein, humanABCG2 protein, humanAbcg2 protein, mouseAdenosine A2 Receptor AgonistsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily G, Member 2Matrix Metalloproteinase 9MMP9 protein, humanMmp9 protein, mouseNeoplasm ProteinsPurinesPyrazolesReceptor, Adenosine A2Aregadenoson

Identifiers

PMID27043281
PMCPMC4855938
OpenAlexW2333603774

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.