A comparative study on fluorescent cholesterol analogs as versatile cellular reporters

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Erdinc Sezgin - , University of Oxford (Author)
  • Fatma Betul Can - , University of Oxford (Author)
  • Falk Schneider - , University of Oxford (Author)
  • Mathias P. Clausen - , University of Oxford, University of Southern Denmark (Author)
  • Silvia Galiani - , University of Oxford (Author)
  • Tess A. Stanly - , University of Oxford (Author)
  • Dominic Waithe - , University of Oxford (Author)
  • Alexandria Colaco - , University of Oxford (Author)
  • Alf Honigmann - , Max Planck Institute of Molecular Cell Biology and Genetics (Author)
  • Daniel Wüstner - , University of Southern Denmark (Author)
  • Frances Platt - , University of Oxford (Author)
  • Christian Eggeling - , University of Oxford (Author)

Abstract

Cholesterol (Chol) is a crucial component of cellular membranes, but knowledge of its intracellular dynamics is scarce. Thus, it is of utmost interest to develop tools for visualization of Chol organization and dynamics in cells and tissues. For this purpose, many studies make use of fluorescently labeled Chol analogs. Unfortunately, the introduction of the label may influence the characteristics of the analog, such as its localization, interaction, and trafficking in cells; hence, it is important to get knowledge of such bias. In this report, we compared different fluorescent lipid analogs for their performance in cellular assays: 1 ) plasma membrane incorporation, specifically the preference for more ordered membrane environments in phase-separated giant unilamellar vesicles and giant plasma membrane vesicles; 2 ) cellular trafficking, specifically subcellular localization in Niemann-Pick type C disease cells; and 3 ) applicability in fluorescence correlation spectroscopy (FCS)-based and super-resolution stimulated emission depletion-FCS-based measurements of membrane diffusion dynamics. The analogs exhibited strong differences, with some indicating positive performance in the membrane-based experiments and others in the intracellular trafficking assay. However, none showed positive performance in all assays. Our results constitute a concise guide for the careful use of fluorescent Chol analogs in visualizing cellular Chol dynamics.

Details

Original languageEnglish
Pages (from-to)299-309
Number of pages11
JournalJournal of lipid research
Volume57
Issue number2
Publication statusPublished - Feb 2016
Peer-reviewedYes
Externally publishedYes

External IDs

PubMed 26701325
ORCID /0000-0003-0475-3790/work/161889546

Keywords

ASJC Scopus subject areas

Keywords

  • Cholesterol/metabolism, Cholesterol/trafficking, Fluorescence correlation spectroscopy, Fluorescence microscopy, Giant plasma membrane vesicles, Giant unilamellar vesicles, Lipid rafts, Membranes/model, Niemann-Pick type C disease, Stimulated emission depletion