Abstract
Host cell reactivation (HCR) is a transfection-based assay in which intact cells repair damage localized to exogenous DNA. This chapter provides instructions for the application of this technique, using as an exemplar UV irradiation as a source of damage to a luciferase reporter plasmid. Through measurement of the activity of a successfully transcribed and translated reporter enzyme, the amount of damaged plasmid that a cell can “reactivate” or repair and express can be quantitated. Different DNA repair pathways can be analyzed by this technique by damaging the reporter plasmid in different ways. Since it involves repair of a transcriptionally active gene, when applied to UV damage the HCR assay measures the capacity of the host cells to perform transcription-coupled repair, a subset of the overall nucleotide excision repair pathway that specifically targets transcribed gene sequences.
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Latimer, J.J. (2014). Analysis of Actively Transcribed DNA Repair Using a Transfection-Based System. In: Keohavong, P., Grant, S. (eds) Molecular Toxicology Protocols. Methods in Molecular Biology, vol 1105. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-739-6_37
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DOI: https://doi.org/10.1007/978-1-62703-739-6_37
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