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Fluorous Soluble Cyanine Dyes for Visualizing Perfluorocarbons in Living Systems
Irene Lim1, Antoine Vian2, Heidi L van de Wouw1
1Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States.
Journal of the American Chemical Society
|August 19, 2020
Summary
Researchers developed new red-shifted fluorous cyanine dyes for tracking perfluorocarbon nanoemulsions in cells and tissues. These advanced fluorescent probes enable precise measurements of mechanical forces in biological systems.
Area of Science:
- Chemical Biology
- Biophysics
- Materials Science
Background:
- Perfluorocarbons (PFCs) offer bioorthogonal properties for creating dynamic nano- and microdroplets within biological systems.
- Monitoring droplet behavior requires fluorous-soluble fluorophores compatible with existing imaging techniques and model organisms.
Purpose of the Study:
- To develop novel red-shifted fluorous-soluble fluorophores for tracking PFC nanoemulsions.
- To investigate the impact of fluorous tags on cyanine dye photophysical properties.
- To demonstrate the utility of these dyes in live-cell and in vivo imaging applications.
Main Methods:
- Synthesis and photophysical characterization of fluorous cyanine dyes.
- Evaluation of fluorous tag effects on spectral and quantum yield properties.
- Application of dyes for tracking PFC nanoemulsions in macrophage cells.
- Utilizing dyes for mechanical force measurements in multicellular spheroids and zebrafish embryos.
Main Results:
- Introduction of the most red-shifted fluorous-soluble cyanine dyes to date.
- Demonstrated compatibility with standard fluorescent protein markers.
- Successful tracking of perfluorocarbon nanoemulsions in macrophage cells.
- Enabled precise mechanical force measurements in complex biological tissues.
Conclusions:
- Fluorous cyanine dyes provide spectral flexibility for multiplexed imaging.
- These dyes enhance precision in biological force measurements.
- The developed fluorophores are valuable tools for bioorthogonal chemistry and biophysics research.
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