Cryo-electron tomography on focused ion beam lamellae transforms structural cell biology

C. Berger, N. Premaraj, R.B.G. Ravelli, K. Knoops, C. Lopez-Iglesias, P.J. Peters*

*Corresponding author for this work

Research output: Contribution to journal(Systematic) Review article peer-review

2 Downloads (Pure)

Abstract

Cryogenic electron microscopy and data processing enable the determination of structures of isolated macromolecules to near-atomic resolution. However, these data do not provide structural information in the cellular environment where macromolecules perform their native functions, and vital molecular interactions can be lost during the isolation process. Cryogenic focused ion beam (FIB) fabrication generates thin lamellae of cellular samples and tissues, enabling structural studies on the near-native cellular interior and its surroundings by cryogenic electron tomography (cryo-ET). Cellular cryo-ET benefits from the technological developments in electron microscopes, detectors and data processing, and more in situ structures are being obtained and at increasingly higher resolution. In this Review, we discuss recent studies employing cryo-ET on FIB-generated lamellae and the technological developments in ultrarapid sample freezing, FIB fabrication of lamellae, tomography, data processing and correlative light and electron microscopy that have enabled these studies. Finally, we explore the future of cryo-ET in terms of both methods development and biological application.

Original languageEnglish
Pages (from-to)499-511
Number of pages13
JournalNature Methods
Volume20
Issue number4
Early online date1 Mar 2023
DOIs
Publication statusPublished - Apr 2023

Keywords

  • IN-SITU ARCHITECTURE
  • FLUORESCENCE MICROSCOPY
  • CORRELATIVE MICROSCOPY
  • ELECTRON TOMOGRAPHY
  • CRYO-FLUORESCENCE
  • EUKARYOTIC CELLS
  • LIGHT-MICROSCOPY
  • INTACT-CELLS
  • PHASE PLATE
  • RESOLUTION

Cite this