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Related Experiment Videos

Structure and activation dynamics of RBL-2H3 cells observed with scanning force microscopy

D Braunstein1, A Spudich

  • 1Department of Biochemistry, Stanford University, California 94305.

Biophysical Journal
|May 1, 1994
PubMed
Summary

Scanning Force Microscopy (SFM) visualized dynamic cellular processes in living Rat Basophilic Leukemia cells, revealing cytoskeletal and organelle behavior during secretion. This technique offers high-resolution imaging of both fixed and live cells, advancing cell biology research.

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Area of Science:

  • Cell Biology
  • Biophysics
  • Microscopy

Background:

  • Rat Basophilic Leukemia cells are a model for stimulated secretion.
  • Understanding cellular dynamics during activation is crucial for cell biology.

Purpose of the Study:

  • To image surface and subsurface dynamics of living Rat Basophilic Leukemia cells using Scanning Force Microscopy (SFM).
  • To track cytoskeletal elements and organelles in quiescent and activated cells.
  • To investigate surface waves within the plasma membrane.

Main Methods:

  • Scanning Force Microscopy (SFM) at 50-60 s/image.
  • Imaging of quiescent and IgE receptor crosslinked activated cells.
  • Correlation with electron microscopy and Differential Interference Contrast microscopy.

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Main Results:

  • SFM revealed dynamic cytoskeletal and organelle movement in living cells.
  • Surface waves were observed on the plasma membrane.
  • Nuclear pore complexes were visualized in detergent-extracted nuclei, showing subunit structure.
  • Cellular morphology changes during activation were consistent with other microscopy techniques.

Conclusions:

  • SFM provides high-resolution imaging of both fixed and living cells.
  • SFM offers unique insights into dynamic cellular processes not achievable with other methods.
  • This study validates SFM as a powerful tool for investigating cell surface and subsurface dynamics.