SEM-Raman image cytometry of cells

Analyst. 2018 Sep 10;143(18):4495-4502. doi: 10.1039/c8an00955d.

Abstract

Correlative and integrated scanning electron microscopy (SEM) and Raman micro-spectroscopy is presented that enables the characterization and identification of different cancer and non-cancer cells through SEM-Raman image cytometry. The hybrid microscopy system enables the acquisition of high resolution SEM images of uncoated cells and the spatial correlation with chemical information as obtained from Raman micro-spectroscopic imaging. A sample preparation protocol and a workflow are presented that are compatible with the demands of hybrid SEM-Raman microscopy. Stainless steel cell substrates were used that are both conductive and give a low optical response in Raman scattering. Correlative and integrated SEM-Raman micro-spectroscopy is illustrated with cells from blood and cells from a SKBR-3 breast cancer cell line.

MeSH terms

  • Cell Line, Tumor
  • Erythrocytes / cytology
  • Humans
  • Image Cytometry*
  • Leukocytes / cytology
  • Microscopy, Electron, Scanning*
  • Spectrum Analysis, Raman*
  • Stainless Steel

Substances

  • Stainless Steel