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Live CLEM imaging to analyze nuclear structures at high resolution.

Tokuko Haraguchi1, Hiroko Osakada, Takako Koujin

  • 1Advanced ICT Research Institute Kobe, National Institute of Information and Communications Technology, 588-2 Iwaoka, Iwaoka-cho, Nishi-ku, Kobe, 651-2492, Japan, tokuko@nict.go.jp.

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Live CLEM combines fluorescence and electron microscopy to track molecules in living cells and then visualize cellular structures at high resolution. This powerful technique aids in studying dynamic events within nuclear structures.

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Area of Science:

  • Cell Biology
  • Microscopy Techniques

Background:

  • Fluorescence microscopy (FM) offers temporal insights into cellular components in live cells.
  • Electron microscopy (EM) delivers high-resolution, nanometer-scale imaging of fixed cellular structures.

Purpose of the Study:

  • To introduce Live CLEM, a novel correlative light and electron microscopy method.
  • To enable high-resolution analysis of dynamic molecular events within specific cellular contexts, particularly nuclear structures.

Main Methods:

  • Live CLEM integrates FM for observing dynamic molecular behavior in living cells.
  • Subsequent EM imaging captures ultrastructural details of the same cells.
  • Correlating FM and EM datasets provides a unified view of molecular dynamics and cellular architecture.

Main Results:

  • The Live CLEM method successfully correlates dynamic molecular information from FM with high-resolution structural data from EM.
  • Demonstrated application in studying nuclear structures, including nuclear bodies, in mammalian cells.

Conclusions:

  • Live CLEM is a valuable tool for investigating dynamic molecular processes within their precise cellular structural context.
  • This technique enhances the study of complex cellular components like nuclear structures at unprecedented resolution.