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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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Updated: May 17, 2025

DNA Tension Probes to Map the Transient Piconewton Receptor Forces by Immune Cells
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Method for Imaging and Quantifying Molecular Tensions at Cell-Cell Junctions Using DNA-Based Fluorescent Probes.

Priyanka Bhattacharyya1, Qian Tian1, Mingxu You2

  • 1Department of Chemistry, University of Massachusetts, Amherst, MA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|April 2, 2025
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Summary

Researchers developed novel DNA probes to measure cell-to-cell forces, overcoming challenges in visualizing mechanical interactions. These probes enable imaging and quantification of intercellular forces, advancing cell communication studies.

Keywords:
Cell membrane analysisDNA probesFluorescence microscopyIntercellular forcesLipid-DNA conjugate

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Area of Science:

  • Biophysics
  • Cell Biology
  • Molecular Engineering

Background:

  • Mechanical forces are critical regulators of cellular communication and function.
  • Measuring forces between cells (intercellular forces) has been technically difficult due to a lack of suitable tools.

Purpose of the Study:

  • To develop and validate novel DNA-based fluorescent probes for detecting and quantifying intercellular forces.
  • To address the limitations of existing methods for measuring mechanical interactions at the cell surface.

Main Methods:

  • Synthesis of lipid-modified DNA probes designed to anchor to cell membranes.
  • Characterization of the DNA probes' properties and functionality.
  • Application of the probes for imaging and quantifying intercellular tensions by targeting specific cell surface receptors.

Main Results:

  • Successful development of DNA-based fluorescent probes capable of anchoring to cell membranes.
  • Demonstration of the probes' ability to detect and visualize intercellular forces.
  • Quantification of intercellular tensions using the developed probe technology.

Conclusions:

  • Lipid-modified DNA probes offer a promising new tool for studying mechanical forces in cellular communication.
  • These probes facilitate the imaging and quantification of intercellular forces, enabling deeper insights into cell-cell interactions.
  • The developed methodology advances the field of mechanobiology by providing a robust method for measuring cell surface forces.