Abstract
Enzyme-linked signal amplification is a key technique used to enhance the immunohistochemical detection of protein, mRNA, and other molecular species. Tyramide signal amplification (TSA) is based on a catalytic reporter deposit in close vicinity to the epitope of interest. The advantages of this technique are its simplicity, enhanced sensitivity, high specificity, and compatibility with modern multi-label fluorescent microscopy. Here, we describe the use of a TSA kit to increase the signal of enhanced green fluorescent protein (eGFP) expressed under the control of Slc17a6 regulatory elements in the brain of a transgenic mouse. The labeling procedure consists of 6 basic steps: (1) tissue preparation, (2) blocking of nonspecific epitopes, (3) binding with primary antibody, (4) binding with horseradish peroxidase-conjugated secondary antibody, (5) reacting with fluorescent tyramide substrate, and (6) imaging of the signal. The procedures described herein detail these steps and provide additional guidance and background to assist novice users.
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Faget, L., Hnasko, T.S. (2015). Tyramide Signal Amplification for Immunofluorescent Enhancement. In: Hnasko, R. (eds) ELISA. Methods in Molecular Biology, vol 1318. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2742-5_16
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DOI: https://doi.org/10.1007/978-1-4939-2742-5_16
Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-2741-8
Online ISBN: 978-1-4939-2742-5
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