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Related Concept Videos

Cell-matrix's Response to Mechanical Forces01:13

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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. 
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Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
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Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled  that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc  with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...
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The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
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Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy
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Probing cellular mechanics with acoustic force spectroscopy.

Raya Sorkin1,2, Giulia Bergamaschi1, Douwe Kamsma1

  • 1Department of Physics and Astronomy and LaserLab, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands.

Molecular Biology of the Cell
|June 22, 2018
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Summary

Acoustic force spectroscopy (AFS) offers precise, high-throughput cell mechanics measurement. This new method quantifies red blood cell (RBC) changes from disease and extracellular vesicle (EV) uptake, advancing cell mechanobiology.

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Area of Science:

  • Cellular mechanics
  • Biophysics
  • Mechanobiology

Background:

  • Cell mechanics, particularly red blood cell (RBC) deformability, is crucial for physiological function and altered in diseases like anemia and malaria.
  • Existing single-cell methods lack throughput, while high-throughput methods lack accuracy for subtle mechanical differences.
  • There is a need for advanced techniques to accurately probe cell mechanics in heterogeneous populations.

Purpose of the Study:

  • To introduce a novel method for multiplexed single-cell mechanical probing using acoustic force spectroscopy (AFS).
  • To demonstrate AFS's capability in measuring and quantifying mechanical changes in cells.
  • To investigate the impact of extracellular vesicle (EV) uptake on red blood cell mechanics.

Main Methods:

  • Development and application of acoustic force spectroscopy (AFS) for multiplexed single-cell mechanical analysis.
  • Utilizing AFS to probe mechanical differences induced by chemical treatments.
  • Assessing the effects of extracellular vesicle (EV) uptake on red blood cell (RBC) deformability using AFS.

Main Results:

  • AFS successfully measured and quantified mechanical differences in cells induced by chemical treatments.
  • Extracellular vesicle (EV) uptake was shown to increase red blood cell (RBC) deformability.
  • The study demonstrated AFS's high stability and precision in cell manipulation.

Conclusions:

  • Acoustic force spectroscopy (AFS) provides a powerful tool for high-throughput, accurate single-cell mechanical analysis.
  • AFS can reveal subtle changes in cell mechanics relevant to disease states and biological processes.
  • This technique has significant potential for advancing research in cellular mechanics, mechanobiology, and biomedical applications.