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Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
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Related Experiment Video

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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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Novel organic dyes for multicolor localization-based super-resolution microscopy.

Martin Lehmann1, Gregor Lichtner1, Haider Klenz1

  • 1Leibniz Institut für Molekulare Pharmakologie (FMP) & Freie Universität Berlin, Robert-Roessle-Straße 10, 13125, Berlin, Germany.

Journal of Biophotonics
|May 15, 2015
PubMed
Summary
This summary is machine-generated.

Researchers identified novel organic dyes for super-resolution microscopy. A new dye pair, CF647 and CF680, enables precise multicolor single molecule localization microscopy (SMLM) with reduced crosstalk, improving nanoscale imaging accuracy.

Keywords:
STORMdSTORMdirect stochastic optical reconstruction microscopyfluorescent probesmulticolororganic dyessingle molecule localizationsuper-resolution microscopy

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Area of Science:

  • Biophysics
  • Optical Microscopy
  • Nanotechnology

Background:

  • Precise multicolor single molecule localization-based microscopy (SMLM) demands bright probes with compatible photochemistry and spectral properties for nanoscale resolution.
  • Challenges in multicolor SMLM include color channel crosstalk and chromatic alignment errors, limiting the use of existing switchable organic dyes.
  • Optimizing probes is crucial for advancing SMLM applications in cellular nanostructure analysis.

Purpose of the Study:

  • To identify novel organic dyes suitable for high-quality multicolor SMLM.
  • To evaluate the performance of commercially available dyes for super-resolution imaging of cellular nanostructures.
  • To develop an optimal dye pair for registration-free multicolor SMLM with minimal crosstalk.

Main Methods:

  • Screened 28 commercially available organic dyes for super-resolution microscopy applications.
  • Utilized direct stochastic optical reconstruction microscopy (dSTORM) for high-resolution imaging.
  • Tested dye pairs for spectral demixing capabilities and evaluated crosstalk and chromatic alignment.
  • Performed 3-color dSTORM imaging of endocytic machinery and cytoskeleton components.

Main Results:

  • Identified eight novel dyes enabling high-quality dSTORM imaging across different spectral regions.
  • CF647 and CF680 were identified as an optimal dye pair for spectral demixing-based, registration-free multicolor dSTORM due to low crosstalk.
  • Successfully performed 3-color dSTORM using CF647, CF680, and CF568 to visualize nanoscale distributions of cellular structures.

Conclusions:

  • Novel organic dyes significantly enhance multicolor SMLM capabilities.
  • The CF647/CF680 dye pair offers a robust solution for registration-free multicolor dSTORM.
  • This advancement facilitates detailed nanoscale imaging of complex cellular architectures.