Functionalized luminescent oxide nanoparticles for sodium channel imaging at the single molecule level

E. Beaurepaire, D. Giaume, V. Buissette, M. P. Sauviat, D. Casanova, E. Auksorius, J. L. Martin, K. Lahlil, T. Gacoin, J. P. Boilot, A. Alexandrou

Research output: Contribution to journalConference articlepeer-review

Abstract

Lanthanide-ion doped oxide nanoparticles were functionalized for use as fluorescent biological labels. These nanoparticles are synthesized directly in water which facilitates their functionalization, and are very photostable without emission intermittency. Nanoparticles functionalized with guanidinium groups act as artificial toxins and specifically target sodium channels. They are individually detectable in cardiac myocytes, revealing a heterogeneous distribution of sodium channels. Functionalized oxide nanoparticles appear as a novel tool particularly well adapted to long-term single-molecule tracking.

Original languageEnglish
Article number46
Pages (from-to)192-198
Number of pages7
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume5705
DOIs
Publication statusPublished - 16 Aug 2005
EventNanobiophotonics and Biomedical Applications II - San Jose, CA, United States
Duration: 24 Jan 200527 Jan 2005

Keywords

  • Lanthanide
  • Nanoparticles
  • Single molecule tracking

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