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Related Experiment Videos

Super-resolution microscopy approaches to nuclear nanostructure imaging.

Christoph Cremer1, Aleksander Szczurek2, Florian Schock3

  • 1Superresolution Microscopy, Institute of Molecular Biology (IMB), Mainz, Germany; Department of Physics, University of Mainz (JGU), Mainz, Germany; Institute for Pharmacy and Molecular Biotechnology (IPMB), and Kirchhoff Institute for Physics (KIP), University of Heidelberg, Heidelberg, Germany. Electronic address: http://www.optics.imb-mainz.de.

Methods (San Diego, Calif.)
|April 10, 2017
PubMed
Summary

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This summary is machine-generated.

Understanding genome regulation requires studying spatial genome organization. Spectral Precision Distance/Position Determination Microscopy (SPDM) offers nanoscale imaging of nuclear genome structure, revealing gene regulation insights.

Area of Science:

  • Genomics
  • Cell Biology
  • Biophysics

Background:

  • Gene regulation understanding is incomplete despite genome decoding.
  • Spatial genome organization within the cell nucleus significantly impacts gene activity.
  • Studying nanoscale genome organization was previously limited by light microscopy resolution.

Purpose of the Study:

  • To review super-resolution microscopy (SRM) methods.
  • To detail Spectral Precision Distance/Position Determination Microscopy (SPDM) for nanoscale genome structure analysis.
  • To demonstrate SPDM's application in studying chromatin nanostructure and protein distribution.

Main Methods:

  • Focus on Spectral Precision Distance/Position Determination Microscopy (SPDM), a localization microscopy technique.
Keywords:
(Single molecule) localization microscopy (SMLM)NanoscopyNuclear structurePALMSPDMSTORM/dSTORMSuper-resolution light microscopy (SRM)

Related Experiment Videos

  • Utilize conventional fluorescent proteins or organic fluorophores with standard specimen preparation.
  • Employ a single laser frequency for both photoswitching and fluorescence readout.

    • Main Results:

    • SPDM achieves structural resolution down to tens of nanometers for nuclear genome organization.
    • Quantitative analysis of chromatin domains and nanoscale distribution of key proteins is enabled.
    • Dual-color SPDM monitored ischemia effects on cardiomyocyte chromatin nanostructure.

    Conclusions:

    • SPDM provides unprecedented resolution for studying nuclear genome organization at the single-cell/single-molecule level.
    • Novel molecular optics approaches facilitate direct investigation of the nuclear landscape.
    • These methods allow for testing functional genome architecture models with high precision.