Evidence map›Paper›PMID 29311306›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Mechanism-specific assay design facilitates the discovery of Nav1.7-selective inhibitors.

Tania Chernov-Rogan, Tianbo Li, Gang Lu, Henry Verschoof, Kuldip Khakh, Steven W Jones, Maureen H Beresini, Chang Liu, Daniel F Ortwine, Steven J McKerrall and 4 more

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. 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
1.5field-weighted citation impact, top 18% 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, 34 citations in OpenAlex.

  1. Targeting Supramolecular Active Complexes of NaAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  2. Article
  3. Article
  4. Effects of NaCell biochemistry and biophysics · 2025
    Review
  5. Article
  6. Review
  7. Structural mapping of NaNature communications · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. CaThe Journal of physiology · 2022
    Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. The voltage-gated sodium channel NaJournal of Cancer · 2019
    Article
  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

14 authors at 2 institutions in 2 countries.

Tania Chernov-RoganDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Tianbo LiDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Gang LuDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Henry VerschoofXenon Pharmaceuticals, Burnaby, BC V5G 4W8, Canada.
Kuldip KhakhXenon Pharmaceuticals, Burnaby, BC V5G 4W8, Canada.
Steven W JonesDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Maureen H BeresiniDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Chang LiuDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080.
Daniel F OrtwineDepartment of Chemistry, Genentech Inc., San Francisco, CA 94080.
Steven J McKerrallDepartment of Chemistry, Genentech Inc., San Francisco, CA 94080.
David H HackosDepartment of Neuroscience, Genentech Inc., San Francisco, CA 94080.
Daniel SutherlinDepartment of Chemistry, Genentech Inc., San Francisco, CA 94080.
Charles J CohenXenon Pharmaceuticals, Burnaby, BC V5G 4W8, Canada.
Jun ChenDepartment of Biochemical and Cellular Pharmacology, Genentech Inc., San Francisco, CA 94080; chenj144@gene.com.
Genesys (United States) · USXenon Pharmaceuticals (Canada) · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many ion channels, including Nav1.7, Cav1.3, and Kv1.3, are linked to human pathologies and are important therapeutic targets. To develop efficacious and safe drugs, subtype-selective modulation is essential, but has been extremely difficult to achieve. We postulate that this challenge is caused by the poor assay design, and investigate the Nav1.7 membrane potential assay, one of the most extensively employed screening assays in modern drug discovery. The assay uses veratridine to activate channels, and compounds are identified based on the inhibition of veratridine-evoked activities. We show that this assay is biased toward nonselective pore blockers and fails to detect the most potent, selective voltage-sensing domain 4 (VSD4) blockers, including PF-05089771 (PF-771) and GX-936. By eliminating a key binding site for pore blockers and replacing veratridine with a VSD-4 binding activator, we directed the assay toward non-pore-blocking mechanisms and discovered Nav1.7-selective chemical scaffolds. Hence, we address a major hurdle in Nav1.7 drug discovery, and this mechanistic approach to assay design is applicable to Cav3.1, Kv1.3, and many other ion channels to facilitate drug discovery.

Indexed as

Molecular Targeted TherapyAnimalsDrug DiscoveryHigh-Throughput Screening AssaysHumansInsect ProteinsMembrane PotentialsNAV1.7 Voltage-Gated Sodium ChannelRatsVeratridineVoltage-Gated Sodium Channel BlockersWasp VenomsInsect ProteinsNAV1.7 Voltage-Gated Sodium Channelpompilidotoxin alphaSCN9A protein, humanScn9a protein, ratVeratridineVoltage-Gated Sodium Channel BlockersWasp Venoms1KαPMTXN1742KNav1.7veratridineVSD4

Identifiers

PMID29311306
PMCPMC5789920
OpenAlexW2783152909

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.