Visualization of identified GFP-expressing cells by light and electron microscopy

Katherine Luby-Phelps, Gang Ning, Joseph Fogerty, Joseph C. Besharse

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

We have developed a procedure for visualizing GFP expression in fixed tissue after embedding in LR White. We find that GFP fluorescence survives fixation in 4% paraformaldehyde/0.1% glutaraldehyde and can be visualized directly by fluorescence microscopy in unstained, 1-μm sections of LR White-embedded material. The antigenicity of the GFP is retained in these preparations, so that GFP localization can be visualized in the electron microscope after immunogold labeling with anti-GFP antibodies. The ultrastructural morphology of tissue fixed and embedded by this protocol is of quality sufficient for subcellular localization of GFP. Thus, expression of GFP constructs can be visualized in living tissue and the same cells relocated in semithin sections. Furthermore, semithin sections can be used to locate GFP-expressing cells for examination by immunoelectron microscopy of the same material after thin sectioning.

Original languageEnglish (US)
Pages (from-to)271-274
Number of pages4
JournalJournal of Histochemistry and Cytochemistry
Volume51
Issue number3
DOIs
StatePublished - Mar 1 2003

Keywords

  • Electron microscopy
  • Fluorescence microscopy
  • GFP
  • Green fluorescent protein
  • Immunogold
  • LR White

ASJC Scopus subject areas

  • Anatomy
  • Histology

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