Abstract
Imaging the spatiotemporal interaction of proteins in vivo is essential to understanding the complexities of biological systems. The highest accuracy monitoring of protein-protein interactions is achieved using Förster resonance energy transfer (FRET) measured by fluorescence lifetime imaging, with measurements taking minutes to acquire a single frame, limiting their use in dynamic live cell systems. We present a diffraction limited, massively parallel, time-resolved multifocal multiphoton microscope capable of producing fluorescence lifetime images with 55 ps time-resolution, giving improvements in acquisition speed of a factor of 64. We present demonstrations with FRET imaging in a model cell system and demonstrate in vivo FLIM using a GTPase biosensor in the zebrafish embryo.
| Original language | English |
|---|---|
| Pages (from-to) | 6013-6016 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 39 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - 15 Oct 2014 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics