Evidence map›Paper›PMID 24972239›Full record

ArticleEuropean journal of pharmacology2014

Identification of novel small molecule modulators of K2P18.1 two-pore potassium channel.

J Kyle Bruner, Beiyan Zou, Hongkang Zhang, Yixin Zhang, Katharina Schmidt, Min Li

Abstract read
In one paragraph

Article in European journal of pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Article
  6. 5-(Indol-2-yl)pyrazolo[3,4-Molecules (Basel, Switzerland) · 2021
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Verapamil Inhibits TRESK (KInternational journal of molecular sciences · 2018
    Article
  12. Selective and state-dependent activation of TRESK (KBritish journal of pharmacology · 2017
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Properties, regulation, pharmacology, and functions of the K₂p channel, TRESK.Pflugers Archiv : European journal of physiology · 2015
    Review
  18. Review
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 2 institutions in 1 country.

J Kyle BrunerThe Solomon H. Snyder Department of Neuroscience, High Throughput Biology Center, Johns Hopkins University, Baltimore, MD 21205, USA; Johns Hopkins Ion Channel Center (JHICC), Johns Hopkins University, Baltimore, MD 21205, USA.
Beiyan ZouThe Solomon H. Snyder Department of Neuroscience, High Throughput Biology Center, Johns Hopkins University, Baltimore, MD 21205, USA; Johns Hopkins Ion Channel Center (JHICC), Johns Hopkins University, Baltimore, MD 21205, USA.
Hongkang ZhangThe Solomon H. Snyder Department of Neuroscience, High Throughput Biology Center, Johns Hopkins University, Baltimore, MD 21205, USA; Johns Hopkins Ion Channel Center (JHICC), Johns Hopkins University, Baltimore, MD 21205, USA.
Yixin ZhangThe Solomon H. Snyder Department of Neuroscience, High Throughput Biology Center, Johns Hopkins University, Baltimore, MD 21205, USA; Johns Hopkins Ion Channel Center (JHICC), Johns Hopkins University, Baltimore, MD 21205, USA.
Katharina SchmidtDepartment of Physiology, Johns Hopkins University, Baltimore, MD 21205, USA.
Min LiThe Solomon H. Snyder Department of Neuroscience, High Throughput Biology Center, Johns Hopkins University, Baltimore, MD 21205, USA; Johns Hopkins Ion Channel Center (JHICC), Johns Hopkins University, Baltimore, MD 21205, USA. Electronic address: min.x.li@gsk.com.
High Throughput Biology (United States) · USJohns Hopkins University · US

Funding

Johns Hopkins Ion Channel CenterU54MH084691 · NIMH · JOHNS HOPKINS UNIVERSITY · PI LI, MIN · 2008 to 2012
$13.9M
Molecular regulation of calcium-activated (BK) potassium channelsR01GM078579 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI LI, MIN · 2007 to 2010
$1.2M
NCHM CDC HHS R01HM078579NIGMS NIH HHS R01 GM078579NIMH NIH HHS U54 MH084691NIMH NIH HHS U54MH084691
6 · The paper itself

Abstract

Two-pore domain potassium (K2P) channels are responsible for background potassium (K+) current, which is crucial for the maintenance of resting membrane potential. K2P18.1, also called TWIK-related spinal cord K+ channel (TRESK) or KCNK18, is thought to be a major contributor to background K+ currents, particularly in sensory neurons where it is abundantly expressed. Despite its critical role and potential therapeutic implication, pharmacological tools for probing K2P18.1 activity remain unavailable. Here, we report a high-throughput screen against a collection of bioactive compounds that yielded 26 inhibitors and 8 activators of K2P18.1 channel activity with more than 10-fold selectivity over the homologous channel K2P9.1. Among these modulators, the antihistamine loratadine inhibited K2P18.1 activity with IC50 of 0.49±0.23 µM and is considerably more potent than existing K2P18.1 inhibitors. Importantly, the inhibition by loratadine remains equally efficacious upon potentiation of K2P18.1 by calcium signaling. Furthermore, the loratadine effect is dependent on transmembrane residues F145 and F352, providing orthogonal evidence that the inhibition is caused by a direct compound-channel interaction. This study reveals new pharmacological modulators of K2P18.1 activity useful in dissecting native K2P18.1 function.

Indexed as

HEK293 CellsHumansMembrane PotentialsMembrane Transport ModulatorsMutagenesis, Site-DirectedPotassium ChannelsKCNK18 protein, humanMembrane Transport ModulatorsPotassium ChannelsHigh-throughput screensIon channelsK(2P)18.1Lidocaine (Pubchem CID 3676)Loratadine (Pubchem CID 3957)Small molecule drugsTwo-pore potassium channel

Identifiers

PMID24972239
PMCPMC4222048
OpenAlexW1968318260

What OpenQuestion holds

Textmetadata
LicenceTDM
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.