Live-cell imaging of single receptor composition using zero-mode waveguide nanostructures

Christopher I. Richards, Khai Luong, Rahul Srinivasan, Stephen W. Turner, Dennis A. Dougherty, Jonas Korlach, Henry A. Lester

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

We exploit the optical and spatial features of subwavelength nanostructures to examine individual receptors on the plasma membrane of living cells. Receptors were sequestered in portions of the membrane projected into zero-mode waveguides. Using single-step photobleaching of green fluorescent protein incorporated into individual subunits, the resulting spatial isolation was used to measure subunit stoichiometry in α4β4 and α4β2 nicotinic acetylcholine and P2X2 ATP receptors. We also show that nicotine and cytisine have differential effects on α4β2 stoichiometry.

Original languageEnglish
Pages (from-to)3690-3694
Number of pages5
JournalNano Letters
Volume12
Issue number7
DOIs
StatePublished - Jul 11 2012

Keywords

  • Membrane receptors
  • nanostructures
  • nicotinic receptors
  • single-molecule imaging
  • zero-mode waveguide

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanical Engineering

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