Evidence map›Paper›PMID 22675122›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Mechanistic basis for low threshold mechanosensitivity in voltage-dependent K+ channels.

Daniel Schmidt, Josefina del Mármol, Roderick MacKinnon

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

55 citing papers in PubMed, 91 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Kv2.1 negatively regulates Reissner fiber development.Frontiers in cell and developmental biology · 2025
    Article
  8. Article
  9. Article
  10. Mechanosensitive aquaporins.Biophysical reviews · 2023
    Review
  11. Article
  12. Vascular mechanotransduction.Physiological reviews · 2023
    Review
  13. Freestanding lipid bilayer tensiometer for the study of mechanosensitive ion channels.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  14. Article
  15. Physics of mechanotransduction by Piezo ion channels.The Journal of general physiology · 2022
    Review
  16. Article
  17. Mechanotransduction in gastrointestinal smooth muscle cells: role of mechanosensitive ion channels.American journal of physiology. Gastrointestinal and liver physiology · 2021
    Review
  18. Article
  19. Review
  20. 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

3 authors at 2 institutions in 1 country.

Daniel SchmidtHoward Hughes Medical Institute, Laboratory of Molecular Neurobiology and Biophysics, Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.
Josefina del Mármol
Roderick MacKinnon
Rockefeller University · USHoward Hughes Medical Institute · US

Funding

Voltage-Dependent Ion Channel GatingR01GM043949 · NIGMS · ROCKEFELLER UNIVERSITY · PI MACKINNON, RODERICK · 1990 to 2024
$10.1M
Howard Hughes Medical InstituteNIGMS NIH HHS GM43949NIGMS NIH HHS R01 GM043949
6 · The paper itself

Abstract

Living cells respond to mechanical forces applied to their outer membrane through processes referred to as "mechanosensation". Faced with hypotonic shock, to circumvent cell lysis, bacteria open large solute-passing channels to reduce the osmotic pressure gradient. In the vascular beds of vertebrate animals blood flow is regulated directly through mechanical distention-induced opening of stretch-activated channels in smooth muscle cells. Touch sensation is thought to originate in mechanically sensitive ion channels in nerve endings, and hearing in mechanically sensitive ion channels located in specialized cells of the ear. While the ubiquity of mechanosensation in living cells is evident, the ion channels underlying the transduction events in vertebrate animals have remained elusive. Here we demonstrate through electrophysiological recordings that voltage-dependent K(+) (Kv) channels exhibit exquisite sensitivity to small (physiologically relevant in magnitude) mechanical perturbations of the cell membrane. The demonstrated mechanosensitivity is quantitatively consistent with membrane tension acting on a late-opening transition through stabilization of a dilated pore. This effect causes a shift in the voltage range over which Kv channels open as well as an increase in the maximum open probability. This mechanically induced shift could allow Kv channels and perhaps other voltage-dependent ion channels to play a role in mechanosensation.

Indexed as

AnimalsIon Channel GatingPotassium ChannelsXenopusPotassium Channels

Identifiers

PMID22675122
PMCPMC3387069
OpenAlexW2023239777

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.