Evidence map›Paper›PMID 26099538›Full record

ArticleBioorganic & medicinal chemistry letters2015

Docking of competitive inhibitors to the P2X7 receptor family reveals key differences responsible for changes in response between rat and human.

Emily A Caseley, Stephen P Muench, Stephen A Baldwin, Katie Simmons, Colin W Fishwick, Lin-Hua Jiang

Open access · hybridAbstract read
In one paragraph

Article in Bioorganic & medicinal chemistry letters, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 12% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  3. Review
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  5. Review
  6. Review
  7. Spotlight on P2X7 Receptor PET Imaging: A Bright Target or a Failing Star?International journal of molecular sciences · 2023
    Review
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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

6 authors at 1 institution in 1 country.

Emily A CaseleySchool of Biomedical Sciences, University of Leeds, Leeds, UK. Electronic address: bs09e2c@leeds.ac.uk.
Stephen P MuenchSchool of Biomedical Sciences, University of Leeds, Leeds, UK.
Stephen A BaldwinSchool of Biomedical Sciences, University of Leeds, Leeds, UK.
Katie SimmonsSchool of Chemistry, University of Leeds, Leeds, UK.
Colin W FishwickSchool of Chemistry, University of Leeds, Leeds, UK.
Lin-Hua JiangSchool of Biomedical Sciences, University of Leeds, Leeds, UK. Electronic address: l.h.jiang@leeds.ac.uk.
University of Leeds · GB

Funding

Medical Research Council G1000567Medical Research Council G100567Wellcome Trust
6 · The paper itself

Abstract

The P2X7 receptor is a calcium permeable cationic channel activated by extracellular ATP, playing a role in chronic pain, osteoporosis and arthritis. A number of potential lead compounds are inactive against the rat isoform, despite good activity against the human homologue, making animal model studies problematic. Here we have produced P2X7 models and docked three structurally distinct inhibitors using in silico approaches and show they have a similar mode of binding in which Phe95 plays a key role by forming pi-stacking interactions. Importantly this residue is replaced by Leu in the rat P2X7 receptor resulting in a significantly reduced binding affinity. This work provides new insights into binding of P2X7 inhibitors and shows the structural difference in human and rat P2X7 receptors which results in a difference in affinity. Such information is useful both for the rational design of inhibitors based on these scaffolds and also the way in which these compounds are tested in animal models.

Indexed as

Adenosine TriphosphateAmino Acid SequenceAnimalsBinding SitesHumansMolecular Docking SimulationMolecular Sequence DataProtein Structure, TertiaryPurinergic P2X Receptor AntagonistsRatsReceptors, Purinergic P2X7Sequence AlignmentAdenosine TriphosphatePurinergic P2X Receptor AntagonistsReceptors, Purinergic P2X7Adenosine triphosphateAZ11645373KN62P2X7 receptorSB203580

Identifiers

PMID26099538
PMCPMC4508345
OpenAlexW647426666

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.