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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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Far-Red Fluorescent Senescence-Associated &#946;-Galactosidase Probe for Identification and Enrichment of Senescent Tumor Cells by Flow Cytometry
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Fluorescent visualization of Src by using dasatinib-BODIPY.

Michael L Vetter1, Zijuan Zhang, Shuai Liu

  • 1Department of Microbiology and Immunobiology, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115 (USA).

Chembiochem : a European Journal of Chemical Biology
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PubMed
Summary

Researchers developed a novel fluorescent probe for Src kinase by attaching BODIPY to dasatinib. This probe successfully monitors Src kinase presence and localization in cells, offering a new tool for biological experiments.

Keywords:
cell recognitionfluorescent probeskinase inhibitorsproteinssignal transduction

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Many biological experiments face limitations with traditional methods like immunofluorescence or fluorescent tags.
  • Developing versatile fluorescent probes for intracellular targets is crucial for advancing biological research.

Purpose of the Study:

  • To create a generalized method for developing fluorescent probes of intracellular kinases.
  • To synthesize and characterize a novel fluorescent probe for Src kinase activity and localization.

Main Methods:

  • Conjugation of the fluorophore BODIPY to established kinase inhibitors dasatinib and saracatinib.
  • Assessment of the biological activity and specificity of the synthesized probes.
  • Utilizing flow cytometry and fluorescence microscopy for monitoring Src kinase in cells.

Main Results:

  • The dasatinib-BODIPY conjugate retained biological activity and could detect Src kinase.
  • The probe enabled monitoring of Src kinase presence in individual cells via flow cytometry.
  • Localization of Src kinase was successfully tracked using fixed and live-cell fluorescence microscopy.

Conclusions:

  • The dasatinib-BODIPY probe is a viable tool for studying Src kinase in systems incompatible with genetic manipulation.
  • This conjugation strategy offers a promising approach for generating kinase-specific fluorescent probes.
  • The developed probes can potentially be used in multiplexed assays alongside fluorescent proteins.