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Related Concept Videos

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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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
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Related Experiment Video

Updated: Oct 23, 2025

Protrusion Force Microscopy: A Method to Quantify Forces Developed by Cell Protrusions
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Traction force microscopy - Measuring the forces exerted by cells.

Małgorzata Lekka1, Kajangi Gnanachandran1, Andrzej Kubiak1

  • 1Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342, Cracow, Poland.

Micron (Oxford, England : 1993)
|August 20, 2021
PubMed
Summary

Cells generate mechanical forces (traction forces, TFs) using cell-matrix or cell-cell interactions. Traction force microscopy (TFM) advances enable measurement of these forces, revealing their role in cell behavior regulation.

Keywords:
2D/3D traction force microscopyCellsTraction force microscopyTraction in single cells and multicellular systems

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Area of Science:

  • Cell Biology
  • Biophysics
  • Mechanobiology

Background:

  • Cells generate mechanical forces, known as traction forces (TFs), during interactions with the extracellular matrix (ECM) or neighboring cells.
  • These forces are transmitted through cell-ECM and cell-cell contacts, involving structures like focal adhesions and adherens junctions.
  • Measuring TFs is crucial for understanding cell mechanics and behavior.

Purpose of the Study:

  • To review the advancements in techniques for measuring cellular traction forces (TFs).
  • To discuss the application and progress of traction force microscopy (TFM) in quantifying forces at cell-ECM and cell-cell interfaces.
  • To explore how cells sense, adapt to, and respond to mechanical forces and their implications in normal and pathological conditions.

Main Methods:

  • Review of traction force microscopy (TFM) techniques and their evolution.
  • Analysis of methods for measuring TFs exerted by single cells and multicellular systems.
  • Examination of force transmission at cell-ECM and cell-cell interfaces.

Main Results:

  • Significant progress has been made in TFs measurement techniques over the past two decades.
  • TFM has advanced as a key method for quantifying cellular forces.
  • Understanding force sensing, adaptation, and response mechanisms is key to cell behavior regulation.

Conclusions:

  • Traction force microscopy (TFM) is a powerful tool for studying cellular mechanical forces.
  • Investigating cellular responses to mechanical forces provides insights into cell regulation in health and disease.
  • Further research into mechanotransduction pathways is essential for understanding cell behavior.