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Related Concept Videos

Transmission Electron Microscopy01:15

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In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
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Updated: Dec 10, 2025

Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy
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Efficient Transmission Electron Microscopy Characterization of Cell-Nanostructure Interfacial Interactions.

Stella Aslanoglou1,2,3, Yaping Chen1,2,3, Viola Oorschot4,5

  • 1Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia.

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Researchers developed a new method to study cell interactions with nanostructures using ultrathin sections for transmission electron microscopy (TEM). This technique enhances understanding of cellular responses to nanoscale environments.

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Area of Science:

  • Biotechnology and Nanotechnology
  • Cell Biology
  • Materials Science

Background:

  • Engineered nano-bio interfaces with tunable nanostructures are crucial for cellular studies.
  • The complex relationship between substrate topography and cell behavior requires further investigation.
  • Current methods for analyzing cell-nanostructure interactions can introduce artifacts.

Purpose of the Study:

  • To develop a novel experimental design for preparing ultrathin sections (lamellae) of cell-nanostructure imprints with minimal artifacts.
  • To enable efficient transmission electron microscopy (TEM) characterization of interfacial interactions between cells and nanostructures.
  • To advance the understanding of cellular responses to biophysical and biochemical cues at the nanoscale.

Main Methods:

  • Proposed a new experimental design for generating ultrathin sections (lamellae) of cell-nanostructure imprints.
  • Utilized these lamellae for transmission electron microscopy (TEM) analysis.
  • Focused on the interactions between adherent cells and vertically aligned silicon (Si) nanostructures.

Main Results:

  • Successfully generated ultrathin lamellae of cell-nanostructure imprints with minimal artifacts.
  • Demonstrated the efficacy of this method for TEM characterization of cell-nanostructure interfaces.
  • Provided detailed insights into the interactions between cells and vertically aligned Si nanostructures.

Conclusions:

  • The developed lamellae preparation technique facilitates high-resolution TEM imaging of cell-nanostructure interfaces.
  • This approach enhances the understanding of how cells respond to nanoscale physical and chemical signals.
  • The findings are expected to aid in designing improved technologies for cellular manipulation.