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TUNEL Assay as a Measure of Chemotherapy-Induced Apoptosis

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Part of the book series: Methods in Molecular Medicine™ ((MIMM,volume 111))

Abstract

Chemotherapy induces injury to tumor cells, which subsequently die by a number of processes. One of those processes is apoptosis, and its measurement can be a useful tool to understanding the mechanisms of action of chemotherapy agents, drug resistance, and tumor biology. Cells undergoing apoptosis eventually cleave their DNA with nucleases in a character istic pattern that leaves free 3′OH ends. This permits the identification of cells undergoing apop tosis by transfer of fluorescence-labeled dUTP to the free 3′OH ends using the enzyme terminal deoxynucleotidyl transferase (TdT) in a process termed terminal deoxynucleotidyl transferase dUTP-mediated nick end labeling (TUNEL). This chapter outlines the concepts governing the measurement of apoptosis following chemotherapy by TUNEL in cells in culture and in tissue biopsied from patients or laboratory animals that received chemotherapy. It lists the reagents, pro cedures for cell and tissue handling, labeling techniques, caveats, and appropriate controls for labeling 3′OH termini with TdT and quantifying the results.

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Wieder, R. (2005). TUNEL Assay as a Measure of Chemotherapy-Induced Apoptosis. In: Blumenthal, R.D. (eds) Chemosensitivity: Volume II. Methods in Molecular Medicine™, vol 111. Humana Press, Totowa, NJ. https://doi.org/10.1385/1-59259-889-7:043

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  • DOI: https://doi.org/10.1385/1-59259-889-7:043

  • Publisher Name: Humana Press, Totowa, NJ

  • Print ISBN: 978-1-58829-586-6

  • Online ISBN: 978-1-59259-889-2

  • eBook Packages: Springer Protocols

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