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An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation
JoVE Journal
Bioengineering
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JoVE Journal Bioengineering
An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation
DOI:

11:20 min

August 30, 2017

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Chapters

  • 00:05Title
  • 01:33Fluorimeter Setup for Upconversion Spectrum Measurement and Microscope Setup
  • 03:29Characterization of Caged-PKA and Caged PKA/UCNP Constructs and Photolysis Setup
  • 04:55Cell Sample Preparation and Microinjection of Caged-PKA/UCNP Complexes
  • 07:35Photoactivation of Caged-PKA/UCNP Using NIR Light in Living Cells Experiment
  • 08:33Results: Visualize PKA Signal Transduction Activation via NIR Photoactivation
  • 09:40Conclusion

Summary

Automatic Translation

In this protocol, caged protein kinase A (PKA), a cellular signal transduction bioeffector, was immobilized on a nanoparticle surface, microinjected into the cytosol, and activated by the upconverted UV light from near-infrared (NIR) irradiation, inducing downstream stress fiber disintegration in the cytosol.

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