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Distribution of Cytoplasmic Content02:33

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Cytokinesis segregates a cell’s chromosomes and organelles into its daughter cells. Organelles divide and grow prior to cell division but cannot be synthesized de novo; therefore, cells must receive at least one copy of each organelle to survive. Currently, many of the details of how the organelles are distributed are not yet fully elucidated.
Distribution of cytoplasmic determinants
The cytoplasm contains various organelles, as well as salts, proteins, and water. The distribution of...
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Ultrastructural Visualization of the Nuclear Envelope in HeLa Cells.

Sourabh Sengupta1, Zhaojie Zhang2, Daniel L Levy3

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Summary

Transmission electron microscopy (TEM) visualizes cellular structures. This study details a TEM method for observing the nuclear envelope in HeLa cells, aiding research into its ultrastructure under various conditions.

Keywords:
HeLa cellsNuclear envelopeNucleusTransmission electron microscopy

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Area of Science:

  • Cell Biology
  • Microscopy Techniques

Background:

  • Transmission electron microscopy (TEM) has visualized biological materials since the 1940s.
  • TEM offers detailed observation of cellular organelles, intracellular structures, and viruses.
  • Insights into cell nucleus structure and function have been gained using TEM.

Purpose of the Study:

  • To present a method for visualizing the nuclear envelope in cultured HeLa cells using TEM.
  • To provide a comprehensive protocol from cell culturing to visualization.
  • To enable the study of nuclear envelope ultrastructure alterations due to cell culture conditions, genetic modifications, and stress.

Main Methods:

  • Cell culturing of HeLa cells.
  • Fixation, embedding, sectioning, and staining protocols.
  • Visualization using transmission electron microscopy.

Main Results:

  • A detailed method for TEM visualization of the nuclear envelope is established.
  • The protocol allows for high-resolution imaging of nuclear envelope ultrastructure.
  • The method is applicable to various experimental conditions.

Conclusions:

  • The presented TEM method is effective for detailed nuclear envelope visualization in HeLa cells.
  • This technique facilitates research on how external factors influence nuclear envelope ultrastructure.
  • The study provides a valuable tool for cell biology research.