Evidence map›Paper›PMID 15806115›Full record

ArticleBritish journal of pharmacology2005

Block of TRPC5 channels by 2-aminoethoxydiphenyl borate: a differential, extracellular and voltage-dependent effect.

Shang-Zhong Xu, Fanning Zeng, Guylain Boulay, Christian Grimm, Christian Harteneck, David J Beech

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in British journal of pharmacology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 122 papers.

0numbers the graph read from it
0cells of the map it votes in
122citing papers in PubMed
6.2field-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

122 citing papers in PubMed, 255 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Intracellular cAMP signaling-induced CaPflugers Archiv : European journal of physiology · 2025
    Article
  9. [Advances in the development of transient receptor potential melastatin 2 channel inhibitors].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. A Putative Role for TRPC6 in Immune-Mediated Kidney Injury.International journal of molecular sciences · 2023
    Review
  14. Review
  15. CaBiomolecules · 2023
    Article
  16. Article
  17. Cannabidiol sensitizes TRPV2 channels to activation by 2-APB.bioRxiv : the preprint server for biology · 2023
    Article
  18. Review
  19. Article
  20. Roles of CaBiochemistry and biophysics reports · 2022
    Article

62 more citing papers are in PubMed but not listed here.

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 3 institutions in 3 countries.

Shang-Zhong XuSchool of Biomedical Sciences, University of Leeds, Leeds LS2 9JT.
Fanning Zeng
Guylain Boulay
Christian Grimm
Christian Harteneck
David J Beech
University of Leeds · GBCharité - Universitätsmedizin Berlin · DEUniversité de Sherbrooke · CA

Funding

Wellcome Trust
6 · The paper itself

Abstract

1 2-aminoethoxydiphenyl borate (2-APB) has been widely used to examine the roles of inositol 1,4,5-trisphosphate receptors (IP3Rs) and store-operated Ca2+ entry and is an emerging modulator of cationic channels encoded by transient receptor potential (TRP) genes. 2 Using Ca2+-indicator dye and patch-clamp recording we first examined the blocking effect of 2-APB on human TRPC5 channels expressed in HEK-293 cells. 3 The concentration-response curve has an IC50 of 20 microM and slope close to 1.0, suggesting one 2-APB molecule binds per channel. The blocking effect is not shared by other Ca2+ channel blockers including methoxyverapamil, nifedipine, N-propargylnitrendipine, or berberine. 4 In whole-cell and excised membrane patch recordings, 2-APB acts from the extracellular but not intracellular face of the membrane. 5 Block of TRPC5 by 2-APB is less at positive voltages, suggesting that it enters the electric field or acts by modulating channel gating. 6 2-APB also blocks TRPC6 and TRPM3 expressed in HEK-293 cells, but not TRPM2. 7 Block of TRP channels by 2-APB may be relevant to cell proliferation because 2-APB has a greater inhibitory effect on proliferation in cells overexpressing TRPC5. 8 Our data indicate a specific and functionally important binding site on TRPC5 that enables block by 2-APB. The site is only available via an extracellular route and the block shows mild voltage-dependence.

Indexed as

AnimalsBerberineBoron CompoundsCalcium Channel BlockersCalcium ChannelsCation Transport ProteinsCell LineDose-Response Relationship, DrugElectric StimulationGallopamilHumansMembrane PotentialsMiceNifedipinePatch-Clamp TechniquesTime Factors2-aminoethoxydiphenyl borateBerberineBoron CompoundsCalcium Channel BlockersCalcium ChannelsCation Transport ProteinsGallopamilNifedipineTRPC5 protein, humanTRPC6 Cation ChannelTrpc6 protein, mouseTRPC Cation ChannelsTRPM3 protein, humanTRPM Cation Channels

Identifiers

PMID15806115
PMCPMC1576154
OpenAlexW1840415699

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.