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Related Concept Videos

Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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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. 
Anchoring junctions mechanically attach a cell to the...
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Tension Response at Adherens Junctions01:26

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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...
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Mechanical Protein Functions01:58

Mechanical Protein Functions

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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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Forces Acting on Chromosomes02:11

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During mitosis, chromosome movements occur through the interplay of multiple piconewton level forces. In prometaphase, these forces help in chromosome assembly or congression at the equatorial plane, eventually leading to their alignment at the metaphase plate. The forces acting on the chromosomes are space and time-dependent; therefore, they vary with the position of the chromosomes as the cell progresses through mitosis. 
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Anchoring Junctions01:03

Anchoring Junctions

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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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Related Experiment Video

Updated: Apr 26, 2026

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

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Nuclear forces and cell mechanosensing.

Samer Alam1, David B Lovett1, Richard B Dickinson1

  • 1Department of Chemical Engineering, University of Florida, Gainesville, Florida, USA.

Progress in Molecular Biology and Translational Science
|August 2, 2014
PubMed
Summary
This summary is machine-generated.

Cells sense mechanical forces through the nucleus, which connects to the cytoskeleton. Disrupting these nuclear-cytoskeletal linkages impairs cellular mechanosensing and overall cell function, revealing key mechanotransduction pathways.

Keywords:
CytoskeletonKASH domain proteinsLINC complexLamin A/CMechanotransductionNesprin proteinsNuclear envelopeNucleusSUN domain proteins

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Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
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A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
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Related Experiment Videos

Last Updated: Apr 26, 2026

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Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
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A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
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A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton

Published on: July 29, 2018

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Area of Science:

  • Cell biology
  • Biophysics
  • Mechanobiology

Background:

  • Cells perceive and respond to mechanical stimuli.
  • Subcellular mechanisms of cellular mechanosensing are not fully elucidated.
  • The nucleus is increasingly recognized as a critical mechanosensory organelle.

Purpose of the Study:

  • To review recent findings on the nucleus's role in cellular mechanotransduction.
  • To highlight the importance of nuclear-cytoskeletal connections in sensing mechanical forces.
  • To discuss the impact of these linkages on cell function.

Main Methods:

  • Review of current literature on cellular mechanotransduction.
  • Analysis of studies investigating the nucleus-cytoskeleton interplay.
  • Examination of experimental evidence linking nuclear-cytoskeletal interactions to cell function.

Main Results:

  • Mechanical forces are transmitted from cell surface receptors through the cytoskeleton to the nucleus.
  • Specific linkers mediate the connection between the nucleus and the cytoskeleton.
  • Disruption of these nuclear-cytoskeletal linkages leads to impaired mechanosensing and cellular dysfunction.

Conclusions:

  • The nucleus acts as a central mechanosensor within the cell.
  • Nuclear-cytoskeletal linkages are crucial for effective cellular mechanotransduction.
  • Understanding these interactions is vital for comprehending cell mechanics and function.