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MIRAVA POLYSCOPE – All in one and on for all: the perfect image
Science beyond Barriers

abberior instruments

Live Cell Imaging

2021
Cell Reports

Multi-label in vivo STED microscopy by parallelized switching of reversibly switchable fluorescent proteins

Authors:

Willig, K. I., Wegner, W., Müller, A., Calvet-Fournier, V., & Steffens, H.

Keywords:

nanoscopy, intravital, super-resolution, multicolor, synapse, mouse neocortex, photochromism, imaging, fluorescence, in-vivo

Abstract:

Despite the tremendous success of super-resolution microscopy, multi-color in vivo applications are still rare. Here we present live-cell multi-label STED microscopy in vivo and in vitro by combining spectrally separated excitation and detection with temporal sequential imaging of reversibly switchable fluorescent proteins (RSFPs). Triple-label STED microscopy resolves pre- and postsynaptic nano-organizations in vivo in mouse visual cortex employing EGFP, Citrine, and the RSFP rsEGP2. Combining the positive and negative switching RSFPs Padron and Dronpa-M159T enables dual-label STED microscopy. All labels are recorded quasi-simultaneously by parallelized on- and off-switching of the RSFPs within the fast-scanning axis. Depletion is performed by a single STED beam so that all channels automatically co-align. Such an addition of a second or third marker merely requires a switching laser, minimizing setup complexity. Our technique enhances in vivo STED microscopy, making it a powerful tool for studying multiple synaptic nano-organizations or the tripartite synapse in vivo.

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Superresolution & Confocal Systems

  • Overview
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Superresolution & Confocal Modules

  • Overview
  • MINFLUX Module
  • MATRIX Detector
  • TIMEBOW Imaging
  • FLEXPOSURE Illumination
  • RAYSHAPE Mirror
  • TRUESHARP Deconvolution
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  • STED Lasers
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  • Excitation Lasers
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