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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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: May 13, 2026

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

Location-dependent intracellular particle tracking using a cell-based coordinate system.

Shada Abuhattoum1, Daphne Weihs

  • 1a Faculty of Biomedical Engineering, Technion-Israel Institute of Technology , Haifa , 32000 , Israel.

Computer Methods in Biomechanics and Biomedical Engineering
|March 5, 2013
PubMed
Summary
This summary is machine-generated.

We developed a new cell-specific coordinate system to track intracellular particle motion. This method reveals uniform cell responses to Adenosine Triphosphate (ATP) depletion across the cytoplasm, despite localized morphological changes.

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Last Updated: May 13, 2026

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Area of Science:

  • Cellular dynamics
  • Biophysics
  • Microscopy techniques

Background:

  • Intracellular particle motion is influenced by active and thermal processes in complex cellular environments.
  • Cellular responses to stimuli can be location-dependent, necessitating advanced tracking methods.
  • Existing particle tracking methods may not fully capture spatial variations within cells.

Purpose of the Study:

  • To introduce a novel cell-specific polar coordinate system for analyzing intracellular particle motion.
  • To investigate location-dependent cellular responses to environmental changes, specifically Adenosine Triphosphate (ATP) depletion.
  • To compare particle transport dynamics in different cellular regions.

Main Methods:

  • Development of a cell-specific polar coordinate system based on nucleus location and orientation.
  • Particle tracking of internalized probes within cellular cytoplasm.
  • Comparative analysis of particle motion in Adenosine Triphosphate (ATP)-depleted and control cells.
  • Assessment of transport differences relative to nuclear position.

Main Results:

  • Particle transport exhibits distance-dependent differences from the nucleus in both control and ATP-depleted cells.
  • Basic analysis confirms reduced particle activity upon ATP depletion.
  • The location-dependent analysis reveals a nearly uniform cellular response across the cytoplasm, contrasting with localized cortical morphology changes.

Conclusions:

  • The cell-specific polar coordinate system effectively reveals subtle, location-dependent intracellular dynamics.
  • Adenosine Triphosphate (ATP) depletion elicits a uniform cytoplasmic response, despite localized morphological alterations.
  • This approach enhances the understanding of cellular heterogeneity and response mechanisms.