Evidence map›Paper›PMID 27215841›Full record

ArticleeLife2016

Optical electrophysiology for probing function and pharmacology of voltage-gated ion channels.

Hongkang Zhang, Elaine Reichert, Adam E Cohen

Abstract read
In one paragraph

Article in eLife, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

  1. Absolute voltage mapping using dynamic photocycle control.bioRxiv : the preprint server for biology · 2026
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  2. Review
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  5. Making Sense of Psychedelics in the CNS.The international journal of neuropsychopharmacology · 2024
    Article
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  12. Rhodopsin-Based Optogenetics: Basics and Applications.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Imaging Voltage with Microbial Rhodopsins.Frontiers in molecular biosciences · 2021
    Review
  18. Review
  19. Article
  20. The Next 50 Years of Neuroscience.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    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

3 authors.

Hongkang ZhangDepartments of Chemistry and Chemical Biology and Physics, Harvard University, Cambridge, United States.
Elaine ReichertDepartments of Chemistry and Chemical Biology and Physics, Harvard University, Cambridge, United States.
Adam E CohenDepartments of Chemistry and Chemical Biology and Physics, Harvard University, Cambridge, United States.ORCID 0000-0002-8699-2404

Funding

Engineering Microbial Rhodopsins as Optical Voltage SensorsR01EB012498 · NIBIB · HARVARD UNIVERSITY · PI COHEN, ADAM EZRA · 2011 to 2014
$1.5M
Howard Hughes Medical InstituteNIBIB NIH HHS R01 EB012498
6 · The paper itself

Abstract

Voltage-gated ion channels mediate electrical dynamics in excitable tissues and are an important class of drug targets. Channels can gate in sub-millisecond timescales, show complex manifolds of conformational states, and often show state-dependent pharmacology. Mechanistic studies of ion channels typically involve sophisticated voltage-clamp protocols applied through manual or automated electrophysiology. Here, we develop all-optical electrophysiology techniques to study activity-dependent modulation of ion channels, in a format compatible with high-throughput screening. Using optical electrophysiology, we recapitulate many voltage-clamp protocols and apply to Nav1.7, a channel implicated in pain. Optical measurements reveal that a sustained depolarization strongly potentiates the inhibitory effect of PF-04856264, a Nav1.7-specific blocker. In a pilot screen, we stratify a library of 320 FDA-approved compounds by binding mechanism and kinetics, and find close concordance with patch clamp measurements. Optical electrophysiology provides a favorable tradeoff between throughput and information content for studies of NaV channels, and possibly other voltage-gated channels.

Indexed as

Action PotentialsElectrophysiologyGene ExpressionGenes, ReporterGreen Fluorescent ProteinsHEK293 CellsHigh-Throughput Screening AssaysHumansIon Channel GatingKineticsLuminescent ProteinsNAV1.7 Voltage-Gated Sodium ChannelOptical DevicesPotassium Channels, Inwardly RectifyingSmall Molecule LibrariesSodium Channel Blockersfluorescent protein 583Green Fluorescent ProteinsKCNJ2 protein, humanLuminescent ProteinsNAV1.7 Voltage-Gated Sodium ChannelPotassium Channels, Inwardly RectifyingSCN9A protein, humanSmall Molecule LibrariesSodium Channel Blockersbiophysicselectrophysiologyhigh throughput screeningion channelsneurosciencenoneoptogeneticsstructural biology

Identifiers

PMID27215841
PMCPMC4907688

What OpenQuestion holds

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LicenceCC BY
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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.