Evidence map›Paper›PMID 29247460›Full record

ArticleBritish journal of pharmacology2018

Identification of an (-)-englerin A analogue, which antagonizes (-)-englerin A at TRPC1/4/5 channels.

Hussein N Rubaiy, Tobias Seitz, Sven Hahn, Axel Choidas, Peter Habenberger, Bert Klebl, Klaus Dinkel, Peter Nussbaumer, Herbert Waldmann, Mathias Christmann and 1 more

Abstract read
In one paragraph

Article in British journal of pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

14 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Mechanism of (-)-Englerin A and calcium binding on the human TRPC5 channel.Protein science : a publication of the Protein Society · 2025
    Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Transient Receptor Potential Cation Channels in Cancer Therapy.Medical sciences (Basel, Switzerland) · 2019
    Review
  10. Englerin A-sensing charged residues for transient receptor potential canonical 5 channel activation.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2019
    Article
  11. Review
  12. Article
  13. Review
  14. Article
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

11 authors at 4 institutions in 2 countries.

Hussein N RubaiySchool of Medicine, University of Leeds, Leeds, UK.ORCID 0000-0002-1489-5576
Tobias SeitzInstitute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany.
Sven HahnInstitute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany.
Axel ChoidasLead Discovery Center GmbH, Dortmund, Germany.
Peter HabenbergerLead Discovery Center GmbH, Dortmund, Germany.
Bert KleblLead Discovery Center GmbH, Dortmund, Germany.
Klaus DinkelLead Discovery Center GmbH, Dortmund, Germany.
Peter NussbaumerLead Discovery Center GmbH, Dortmund, Germany.
Herbert WaldmannMax-Planck-Institut für molekulare Physiologie, Dortmund, Germany.
Mathias ChristmannInstitute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany.
David J BeechSchool of Medicine, University of Leeds, Leeds, UK.
Lead Discovery Center (Germany) · DEFreie Universität Berlin · DEUniversity of Leeds · GBMax Planck Institute of Molecular Physiology · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purpose(-)-Englerin A (EA) is a potent cytotoxic agent against renal carcinoma cells. It achieves its effects by activation of transient receptor potential canonical (TRPC)4/TRPC1 heteromeric channels. It is also an agonist at channels formed by the related protein, TRPC5. Here, we sought an EA analogue, which might enable a better understanding of these effects of EA. EXPERIMENTAL APPROACH: An EA analogue, A54, was synthesized by chemical elaboration of EA. The effects of EA and A54 on the activity of human TRPC4 or TRPC5 channels overexpressed on A498 and HEK 293 cells were investigated, firstly, by measuring intracellular Ca KEY

resultsA54 had weak or no agonist activity at endogenous TRPC4/TRPC1 channels in A498 cells or TRPC4 or TRPC5 homomeric channels overexpressed in HEK 293 cells. A54 strongly inhibited EA-mediated activation of TRPC4/TRPC1 or TRPC5 and weakly inhibited activation of TRPC4. Studies of TRPC5 showed that A54 shifted the EA concentration-response curve to the right without changing its slope, consistent with competitive antagonism. In contrast, Gd CONCLUSIONS AND IMPLICATIONS: This study has revealed a new tool compound for EA and TRPC1/4/5 channel research, which could be useful for characterizing endogenous TRPC1/4/5 channels and understanding EA-binding sites and their physiological relevance.

Indexed as

CalciumCell Line, TumorCells, CulturedDiglyceridesDrug SynergismGadoliniumHumansLysophospholipidsMembrane PotentialsSesquiterpenes, GuaianeSphingosineTRPC Cation Channels1-oleoyl-2-acetylglycerolCalciumDiglyceridesenglerin AGadoliniumLysophospholipidsSesquiterpenes, GuaianeSphingosinesphingosine 1-phosphatetransient receptor potential cation channel, subfamily C, member 1TRPC3 cation channelTRPC4 ion channelTRPC5 protein, humanTRPC Cation Channels

Identifiers

PMID29247460
PMCPMC5811624
OpenAlexW2771673434

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.