Evidence map›Paper›PMID 20062532›Full record

ArticlePloS one2010

HCN channels are not required for mechanotransduction in sensory hair cells of the mouse inner ear.

Geoffrey C Horwitz, Andrea Lelli, Gwenaëlle S G Géléoc, Jeffrey R Holt

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.4field-weighted citation impact, top 22% 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

20 citing papers in PubMed, 44 citations in OpenAlex.

  1. Review
  2. eLife · 2024
    Article
  3. Article
  4. Article
  5. Molecular Structure of the Hair Cell Mechanoelectrical Transduction Complex.Cold Spring Harbor perspectives in medicine · 2019
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. HCN channels expressed in the inner ear are necessary for normal balance function.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Article
  19. Mechanism of spontaneous activity in afferent neurons of the zebrafish lateral-line organ.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Article
  20. 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

4 authors at 1 institution in 1 country.

Geoffrey C HorwitzDepartment of Neuroscience, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America.
Andrea Lelli
Gwenaëlle S G Géléoc
Jeffrey R Holt
University of Virginia · US

Funding

Functional development of hair cells and neurons in the inner earR01DC008853 · NIDCD · UNIVERSITY OF VIRGINIA · PI GELEOC, GWENAELLE S · 2007 to 2025
$6.4M
Ion Channel Function in Auditory & Vestibular Hair CellsR01DC005439 · NIDCD · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI HOLT, JEFFREY R · 2001 to 2019
$5.5M
Ion Channel Function in Auditory & Vestibular Hair CellsR56DC005439 · NIDCD · UNIVERSITY OF VIRGINIA · PI HOLT, JEFFREY R · 2008 to 2008
$379k
NIDCD NIH HHS DC05439NIDCD NIH HHS R01 DC005439NIDCD NIH HHS R56 DC005439
6 · The paper itself

Abstract

The molecular composition of the hair cell transduction channel has not been identified. Here we explore the novel hypothesis that hair cell transduction channels include HCN subunits. The HCN family of ion channels includes four members, HCN1-4. They were originally identified as the molecular correlates of the hyperpolarization-activated, cyclic nucleotide gated ion channels that carry currents known as If, IQ or Ih. However, based on recent evidence it has been suggested that HCN subunits may also be components of the elusive hair cell transduction channel. To investigate this hypothesis we examined expression of mRNA that encodes HCN1-4 in sensory epithelia of the mouse inner ear, immunolocalization of HCN subunits 1, 2 and 4, uptake of the transduction channel permeable dye, FM1-43 and electrophysiological measurement of mechanotransduction current. Dye uptake and transduction current were assayed in cochlear and vestibular hair cells of wildtype mice exposed to HCN channel blockers or a dominant-negative form of HCN2 that contained a pore mutation and in mutant mice that lacked HCN1, HCN2 or both. We found robust expression of HCNs 1, 2 and 4 but little evidence that localized HCN subunits in hair bundles, the site of mechanotransduction. Although high concentrations of the HCN antagonist, ZD7288, blocked 50-70% of the transduction current, we found no reduction of transduction current in either cochlear or vestibular hair cells of HCN1- or HCN2- deficient mice relative to wild-type mice. Furthermore, mice that lacked both HCN1 and HCN2 also had normal transduction currents. Lastly, we found that mice exposed to the dominant-negative mutant form of HCN2 had normal transduction currents as well. Taken together, the evidence suggests that HCN subunits are not required for mechanotransduction in hair cells of the mouse inner ear.

Indexed as

Mechanotransduction, CellularAnimalsEar, InnerHair Cells, VestibularIon ChannelsMiceRNA, MessengerIon ChannelsRNA, Messenger

Identifiers

PMID20062532
PMCPMC2797612
OpenAlexW2078884966

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.