An in situ fracture device to image lipids in single cells using ToF-SIMS
Journal article, 2011

Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) imaging yields molecule-specific images showing the spatial distribution of specific lipids with submicron resolution, making it a potentially powerful method for studying a variety of biological questions in single cells. In order to make possible the analysis of hydrated cells in vacuum, we have designed a device for in situ freeze-fracture of cell samples. PC12 cells are frozen between two silicon shards in a sandwich geometry, and the fracture is conducted under vacuum inside the analysis chamber of the instrument. After freeze-fracture, ToF-SIMS analysis was carried out using a Bi cluster ion source, providing high-resolution images of single cells. We also show that when combining freeze-fracture and cluster SIMS imaging, low abundant biologically important lipids, specifically PE, PC and non-SM PC, can be imaged in single cells. Finally, K+ ion localization was used as a diagnostic to identify fracture planes through the cell for these fractured samples.

pc12 cells



tof-sims imaging


Ingela Lanekoff

University of Gothenburg

Michael Kurczy

Chalmers, Chemical and Biological Engineering

Kelly L. Adams

University of Gothenburg

J Malm

Roger Karlsson

University of Gothenburg

P Sjovall

Andrew Ewing

University of Gothenburg

Surface and Interface Analysis

0142-2421 (ISSN) 1096-9918 (eISSN)

Vol. 43 1-2 257-260

Subject Categories

Chemical Sciences



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