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Protein Dynamics in Living Cells

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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Updated: Sep 28, 2025

An Analytical Tool that Quantifies Cellular Morphology Changes from Three-dimensional Fluorescence Images

An Analytical Tool that Quantifies Cellular Morphology Changes from Three-dimensional Fluorescence Images

Published on: August 31, 2012

Quantifying Molecular Dynamics within Complex Cellular Morphologies using LLSM-FRAP.

Huw Colin-York^1,2, John Heddleston³, Eric Wait³

¹MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.

|March 28, 2022

Summary

This summary is machine-generated.

This study introduces a new 3D imaging method combining lattice light sheet microscopy and fluorescence recovery after photobleaching (FRAP) to precisely measure molecular dynamics in living cells, offering deeper insights into cellular functions.

Keywords:

FRAP actin cytoskeleton diffusion lattice light sheet microscopy membranes

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From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

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Published on: October 9, 2014

Area of Science:

Cellular and Molecular Biology
Biophysics
Microscopy Techniques

Background:

Understanding molecular dynamics in complex cellular structures is crucial for cell function.
Fluorescence recovery after photobleaching (FRAP) is a common technique, but often limited to 2D imaging.
Traditional FRAP methods face limitations in temporal resolution and invasiveness for 3D cellular analysis.

Purpose of the Study:

To develop a rapid and minimally invasive method for quantifying molecular dynamics in 3D cellular environments.
To overcome the limitations of traditional FRAP in capturing dynamics within complex cell morphologies.
To enable accurate measurement and interpretation of molecular dynamics in relation to 3D cell structure.

Main Methods:

Integration of lattice light sheet microscopy with fluorescence recovery after photobleaching (FRAP).
Development of an experimental and computational pipeline for 3D imaging.
Utilizing numerical simulations to interpret molecular dynamics data.
Minimally invasive imaging to preserve cellular function during measurements.

Main Results:

A novel pipeline enabling rapid and minimally invasive quantification of molecular dynamics in 3D.
Successful application of the method to measure molecular dynamics with respect to complex 3D cell morphology.
Overcoming limitations of conventional 2D FRAP techniques.

Conclusions:

The presented pipeline offers unprecedented insights into living cell function by accurately measuring 3D molecular dynamics.
This approach has the potential to significantly advance our understanding of cellular processes.
Enables detailed analysis of molecular behavior within intricate cellular architectures.