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Cross-resistance to UV Radiation of a Cisplatin-resistant Human Cell Line: Overexpression of Cellular Factors That Recognize UV-modified DNA

Overview
Journal Mol Cell Biol
Specialty Cell Biology
Date 1991 Apr 1
PMID 2005898
Citations 19
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Abstract

A human cell line selected for cisplatin resistance (CPR) was irradiated with UV light and showed cross-resistance to UV light. Applying a modified chloramphenicol acetyltransferase assay, we observed that CPR cells acquired enhanced host cell reactivation of a transfected plasmid carrying UV damage. Gel mobility shift analysis indicated that two nuclear factors that recognize UV-modified DNA were overexpressed in CPR cells. In addition, factors that bind UV-modified DNA were independent from the factors that bind cisplatin-modified DNA. The significance of the identified binding factors, possibly DNA repair enzymes, is discussed.

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