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Updated: Jul 6, 2026
Proteomic Sample Preparation from Formalin Fixed and Paraffin Embedded Tissue
Published on: September 2, 2013
Sample preparation for mass spectrometry analysis of formalin-fixed paraffin-embedded tissue: proteomic analysis of
Nicolas A Stewart1, Timothy D Veenstra
1National Cancer Institute at Frederick , Frederick, Maryland.
Abstract:
One of the great hopes in biomedical research is that proteomic technology can be used to identify novel biomarkers for diseases such as cancer. The challenge to discovering biomarkers starts with sample collection and continues right through data acquisition and bioinformatic analysis. Because the ultimate goal is to find indicators of human disease it is ideal to be able to study clinical samples. Unfortunately clinical samples such as serum, plasma, urine, and especially tissue biopsies are precious and are often difficult to obtain in sufficient quantities or numbers to conduct proteomic discovery studies. There exists, however, a vast archive of pathologically characterized clinical samples in the form of formalin fixed paraffin embedded tissue blocks. This chapter describes methods that have been developed to allow the proteins from these tissue samples to be excised in a form that is amenable for proteomic analysis by mass spectrometry.
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The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
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