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Visualization of Endoplasmic Reticulum Subdomains in Cultured Cells
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Use of Super-Resolution Live Cell Imaging to Distinguish Endoplasmic Reticulum: Nuclear Envelope Subcellular

Nadine Field1, Katja Graumann2

  • 1Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK.

Methods in Molecular Biology (Clifton, N.J.)
|February 27, 2024
PubMed
Summary
This summary is machine-generated.

Super-resolution live cell imaging now allows researchers to distinguish between the inner and outer nuclear membranes (NE) and perinuclear endoplasmic reticulum (ER) in plant cells. This advances understanding of protein localization and function at this critical interface.

Keywords:
Confocal microscopyEndoplasmic reticulumFluorescence intensity ratioNuclear envelopeProximity distance

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Plant Science

Background:

  • Eukaryotic cells possess a nuclear envelope (NE) and endomembrane system, crucial for cellular processes.
  • The NE, a double membrane continuous with the endoplasmic reticulum (ER), plays roles in calcium signaling and protein degradation.
  • Distinguishing the inner nuclear membrane, outer nuclear membrane, and perinuclear ER was previously limited to electron microscopy.

Purpose of the Study:

  • To introduce protocols for distinguishing subcellular localization of nuclear envelope and ER proteins in live plant cells.
  • To enable real-time observation of protein and membrane dynamics at the NE/ER interface using advanced microscopy.

Main Methods:

  • Development and application of super-resolution live cell imaging techniques.
  • Live plant cell imaging to visualize the nuclear envelope and endoplasmic reticulum.

Main Results:

  • Successful differentiation between the inner and outer nuclear membranes and perinuclear ER using light microscopy.
  • Real-time observation of protein and membrane dynamics at the NE/ER interface is now achievable.

Conclusions:

  • Super-resolution live cell imaging provides unprecedented resolution for studying the NE/ER system in plants.
  • These protocols will facilitate new discoveries regarding protein localization and function within the nuclear envelope and ER.