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Updated: May 5, 2026

Labeling Stem Cells with Fluorescent Dyes for non-invasive Detection with Optical Imaging

Labeling Stem Cells with Fluorescent Dyes for non-invasive Detection with Optical Imaging

Published on: April 2, 2008

Quantitative metabolic imaging using endogenous fluorescence to detect stem cell differentiation.

Kyle P Quinn¹, Gautham V Sridharan, Rebecca S Hayden

¹Department of Biomedical Engineering, Tufts University 4 Colby Street Medford, MA 02155.

Scientific Reports

|December 6, 2013

Summary

This study introduces a non-invasive method using fluorescence microscopy to track human mesenchymal stem cell differentiation by monitoring their metabolic redox state. This optical approach offers a rapid, label-free alternative to traditional destructive assessment methods.

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Last Updated: May 5, 2026

Labeling Stem Cells with Fluorescent Dyes for non-invasive Detection with Optical Imaging

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Published on: April 2, 2008

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Area of Science:

Biomedical Engineering
Cell Biology
Biophysics

Background:

Assessing stem cell therapy efficacy and tissue development requires high-resolution spatial mapping of cell metabolism.
Traditional methods for stem cell and engineered tissue assessment are destructive, time-consuming, and labor-intensive.

Purpose of the Study:

To elucidate the relationship between endogenous cell fluorescence, redox state, and human mesenchymal stem cell differentiation.
To validate a non-invasive, label-free optical method for characterizing cell differentiation spatiotemporal patterns.

Main Methods:

Two-photon excited fluorescence microscopy was employed to map cell metabolism.
Liquid chromatography/mass spectrometry and quantitative PCR were used to evaluate the optical redox ratio sensitivity.
Physiological mechanisms linking redox ratio decrease to differentiation onset were investigated.

Main Results:

Endogenous cell fluorescence and redox state were correlated with stem cell differentiation into adipogenic and osteoblastic lineages.
The optical redox ratio of FAD/(NADH + FAD) demonstrated sensitivity to metabolic shifts during differentiation.
A decrease in the redox ratio was identified as a key indicator for the onset of stem cell differentiation.

Conclusions:

A non-invasive, label-free optical method using fluorescence microscopy can effectively monitor stem cell differentiation.
This approach provides a powerful tool for rapid, high-content characterization of cell and tissue cultures, overcoming limitations of traditional methods.