Single NanoParticle Photothermal Tracking (SNaPT) of 5 nm gold beads in live cells
Language
en
Article de revue
This item was published in
Biophysical Journal. 2006-12-15, vol. 91, n° 12, p. 4598
Biophysical Society
English Abstract
Tracking individual nano-objets in live cells during arbitrary long times is an ubiquitous need in modern biology. We present here a method for tracking individual 5 nm gold nanoparticles on live cells. It relies on the ...Read more >
Tracking individual nano-objets in live cells during arbitrary long times is an ubiquitous need in modern biology. We present here a method for tracking individual 5 nm gold nanoparticles on live cells. It relies on the photothermal effect and the detection of the Laser Induced Scattering around a NanoAbsorber (LISNA). The key point for recording trajectories at video rate is the use of a triangulation procedure. The effectiveness of the method is tested against Single fluorescent Molecule Tracking in live COS7 cells on subsecond time scales. We further demonstrate recordings for several minutes of AMPA receptors trajectories on the plasma membrane of live neurons. SNaPT has the unique potential to record arbitrary long trajectory of membrane proteins using non-fluorescent nanometer sized labels.Read less <
English Keywords
single molecule
single particle tracking
photothermal
Origin
Hal imported