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Application of Fluorescent Nanoparticles to Study Remodeling of the Endo-lysosomal System by Intracellular Bacteria
JoVE Journal
Immunology and Infection
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JoVE Journal Immunology and Infection
Application of Fluorescent Nanoparticles to Study Remodeling of the Endo-lysosomal System by Intracellular Bacteria
DOI:

11:38 min

January 02, 2015

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Chapters

  • 00:05Title
  • 01:26Synthesis of 10-nm Gold Nanoparticles (Gold NPs)
  • 02:28Coating of Gold NPs with BSA and Labeling with Rhodamine N-hydroxysuccinimidyl Ester (NHS)
  • 04:30Culture of HeLa Cells and Salmonella Bacteria
  • 05:40Infection of HeLa Cells by Salmonella and Gold-BSA-Rhodamine NPs Pulse Chase-labeling
  • 07:04Imaging and Image Analysis
  • 09:18Results: Salmonella Infection Rearranges the Endolysosomal System in HeLa Cells
  • 10:58Conclusion

Summary

Automatic Translation

This article describes methods for the synthesis and fluorescent labeling of nanoparticles (NPs). The NPs were applied in pulse-chase experiments to label the endo-lysosomal system of eukaryotic cells. Manipulation of the endo-lysosomal system by activities of the intracellular pathogen Salmonella enterica were followed by live cell imaging and quantified.

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