Tracing the endocytic pathways and trafficking kinetics of cell signaling receptors using single QD nanoparticles

Katye M. Fichter, Tothu (Tania) Vu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Cellular signaling is the fundamental process through which cells communicate with each other and respond to their environment. Regulation of this cellular signaling is crucial for healthy cellular function. Malfunctions in signaling are the cause for many diseases and disorders and therefore are under heavy investigation. The molecular mechanisms that underlie cellular signaling rely upon complex and dynamic processes of receptor intracellular trafficking. The specific endosomal pathways and kinetics through which receptors are intracellularly transported regulate the strength and duration of cellular signaling. In even more subtle and complex aspects, the cell orchestrates the individual motions of many receptors, through multiple different pathways, simultaneously. Despite the fundamental role of endosomal trafficking in signal regulation, it has been technically challenging to study since intracellular trafficking is complex and dynamic, with millions of individual receptors simultaneously undergoing trafficking in different endocytic stages. Here, we describe the use of single nanoparticle quantum dot (QD) probes to quantitatively investigate the endocytic trafficking pathways that receptors undergo following ligand activation. This new capability to directly visualize and quantitate cellular signaling at the level of individual receptors inside the cell has broad and important value for understanding fundamental cell signaling processes and the action and effect of therapeutics upon signaling.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
Pages237-247
Number of pages11
Volume991
DOIs
StatePublished - 2013

Publication series

NameMethods in Molecular Biology
Volume991
ISSN (Print)10643745

Fingerprint

Quantum Dots
Nanoparticles
Therapeutic Uses
Ligands

Keywords

  • Cellular signaling
  • Endocytosis
  • GPCRs
  • Intracellular trafficking
  • Quantum dots
  • Receptor recycling
  • Receptors
  • Serotonin

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

Cite this

Fichter, K. M., & Vu, T. T. (2013). Tracing the endocytic pathways and trafficking kinetics of cell signaling receptors using single QD nanoparticles. In Methods in Molecular Biology (Vol. 991, pp. 237-247). (Methods in Molecular Biology; Vol. 991). https://doi.org/10.1007/978-1-62703-336-7_22

Tracing the endocytic pathways and trafficking kinetics of cell signaling receptors using single QD nanoparticles. / Fichter, Katye M.; Vu, Tothu (Tania).

Methods in Molecular Biology. Vol. 991 2013. p. 237-247 (Methods in Molecular Biology; Vol. 991).

Research output: Chapter in Book/Report/Conference proceedingChapter

Fichter, KM & Vu, TT 2013, Tracing the endocytic pathways and trafficking kinetics of cell signaling receptors using single QD nanoparticles. in Methods in Molecular Biology. vol. 991, Methods in Molecular Biology, vol. 991, pp. 237-247. https://doi.org/10.1007/978-1-62703-336-7_22
Fichter, Katye M. ; Vu, Tothu (Tania). / Tracing the endocytic pathways and trafficking kinetics of cell signaling receptors using single QD nanoparticles. Methods in Molecular Biology. Vol. 991 2013. pp. 237-247 (Methods in Molecular Biology).
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