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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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Related Experiment Video

Updated: Sep 19, 2025

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques
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Quantitative, Label-Free Mapping of Cell Force Dynamics.

Xinyu Zhou1,2, Ryan Porter1,3, Xiaoyan Zhou1,3

  • 1Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ, 85287, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|June 1, 2025
PubMed
Summary
This summary is machine-generated.

Label-free plasmonic cell force microscopy maps cellular forces in real-time at high resolution. This technique reveals cardiomyocyte dynamics and population-level cell responses, advancing cell mechanics research.

Keywords:
biosensorscellular forcelabel‐freeplasmonic scattering microscopy

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Area of Science:

  • Biophysics
  • Cell Biology
  • Microscopy

Background:

  • Cellular forces are critical for biological processes.
  • Existing methods for measuring cell forces often lack spatial resolution or require labels.

Purpose of the Study:

  • To develop and demonstrate a label-free plasmonic cell force microscopy technique.
  • To quantify cell-exerted forces with diffraction-limited spatial resolution and millisecond temporal resolution.

Main Methods:

  • Utilized plasmonic scattering imaging to quantify cell-substrate interaction dynamics in real-time.
  • Developed a label-free microscopy approach for mapping cellular forces.

Main Results:

  • Accurately mapped the spatial and temporal evolution of cellular forces.
  • Measured cardiomyocyte force evolution and loading rates with millisecond resolution.
  • Observed heterogeneous cell force changes in response to nicotinic receptor activation.

Conclusions:

  • The developed label-free plasmonic cell force microscopy provides a versatile tool for studying cell mechanics.
  • This technique offers high spatial and temporal resolution for real-time force mapping.
  • Demonstrated potential for investigating population-level cellular responses and drug effects.