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Mechanically-gated Ion Channels

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...

Mechanically-gated Ion Channels

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...

Tension Response at Adherens Junctions

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...

G-Protein Gated Ion Channels

G-Protein Gated Ion Channels

GPCRs are primarily responsible for our sense of smell, taste, and vision. The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory organs,...

Smooth Muscle Contraction

Smooth Muscle Contraction

Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
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Cell-matrix's Response to Mechanical Forces

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
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Related Experiment Video

Updated: Jun 5, 2026

In Vitro Assessment of Cardiac Function Using Skinned Cardiomyocytes

In Vitro Assessment of Cardiac Function Using Skinned Cardiomyocytes

Published on: June 22, 2020

Cardiac mechanosensitivity and stretch-activated ion channels.

G C Bett¹, F Sachs

¹Department of Biophysical Sciences at State University of New York, Buffalo,NY 14214-3005,USA.

Trends in Cardiovascular Medicine

|January 18, 2011

Summary

Mechanosensitive ion channels (MSCs) in the heart regulate beating rate and arrhythmias. Targeting MSCs with drugs may offer new antiarrhythmic therapies.

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Last Updated: Jun 5, 2026

In Vitro Assessment of Cardiac Function Using Skinned Cardiomyocytes

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Published on: June 22, 2020

Electromechanical Assessment of Optogenetically Modulated Cardiomyocyte Activity

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Published on: March 5, 2020

A Novel Platform for In Vitro Cellular Stretching and Imaging

A Novel Platform for In Vitro Cellular Stretching and Imaging

Published on: March 10, 2026

Area of Science:

Cardiovascular Physiology
Cell Biology
Biophysics

Background:

Mechanosensitivity, the ability of cells to respond to mechanical stimuli, is a fundamental cellular property.
Mechanosensitive ion channels (MSCs) are proposed as the primary transducers of these mechanical forces.
In cardiac cells, MSCs are implicated in regulating heart rate based on cardiac filling and in the development of arrhythmias after myocardial infarction.

Purpose of the Study:

To explore the role of mechanosensitive ion channels (MSCs) in cardiac function.
To investigate the potential of targeting MSCs for novel antiarrhythmic drug development.

Main Methods:

This study is a review and hypothesis-driven exploration of existing literature.
It synthesizes evidence linking mechanosensitivity to cardiac electrophysiology and arrhythmogenesis.

Main Results:

Mechanosensitive ion channels (MSCs) are strongly hypothesized to mediate cellular responses to mechanical stress in the heart.
Evidence suggests MSCs contribute to changes in heart rate with varying cardiac filling.
MSCs are implicated in the initiation of stretch-induced arrhythmias, particularly post-myocardial infarction.

Conclusions:

Mechanosensitive ion channels (MSCs) play a critical role in cardiac mechanotransduction.
Pharmacological modulation of MSCs represents a promising avenue for developing new antiarrhythmic drugs.