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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
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Cell-cell junctions in focus - imaging junctional architectures and dynamics at high resolution.

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Summary

Advanced microscopy reveals the nanoscale organization of cell-cell adhesion structures like tight junctions, adherens junctions, and desmosomes. Understanding these complex architectures is key to cell biology and disease research.

Keywords:
AdhesionIntercalated discJunctionsMechanotransductionMicroscopyOptogeneticsSuper-resolutionVolume electron microscopyZonula adherens

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Area of Science:

  • Cell Biology
  • Microscopy
  • Structural Biology

Background:

  • Cell-cell adhesions are vital for tissue integrity and function.
  • Understanding the molecular mechanisms of junctional dynamics is crucial for homeostasis, development, and disease.
  • Previous studies have provided foundational knowledge but lacked nanoscale resolution.

Purpose of the Study:

  • To explore new insights into the nanoscale organization of junctional complexes using advanced microscopy techniques.
  • To integrate junctional architectures with membrane morphology and cellular topography.
  • To review the roles of associated cytoskeletons, organelles, and plasma membranes in junctional dynamics.

Main Methods:

  • Electron microscopy (EM)
  • Live fluorescence microscopy
  • Super-resolution microscopy
  • Volume electron microscopy
  • Development and application of biosensors and optogenetic probes.

Main Results:

  • Detailed nanoscale organization of tight junctions, adherens junctions, and desmosomes revealed.
  • Integration of junctional architecture with membrane and cellular topography.
  • Elucidation of the roles of cytoskeletal components, organelles, and plasma membrane in junctional dynamics.

Conclusions:

  • Advanced microscopy techniques significantly enhance the understanding of cell-cell adhesion complexity.
  • These tools provide critical insights into junctional dynamics across diverse cellular environments.
  • Further research using these methods will advance cell biology and disease understanding.