کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2149138 | 1089601 | 2007 | 14 صفحه PDF | دانلود رایگان |
In this study, we report the creation and characterization of a yeast-based promoter–reporter construct for the detection of genotoxic compounds within a cell's local environment. We have synthesized a fusion containing the HUG1 promoter and GFP and incorporated this cassette into the yeast genome creating a stable, sensitive genotoxicity indicator. To quantify biosensor performance, HUG1P-GFP cells were exposed to multiple doses of a wide variety of genotoxins, including alkylating agents, an oxidative agent, a ribonucleotide reductase inhibitor, a UV mimetic agent, an agent that causes double strand breaks, a topoisomerase I inhibitor, and ionizing radiation, all of which triggered a detectable and reproducible level of GFP production by the HUG1P-GFP strain. Furthermore, GFP was not induced by general cell stresses including starvation, heat shock, and acidic pH. These results suggest this system will be a valuable supplement to traditional genotoxicity assays.
Journal: Mutation Research/Genetic Toxicology and Environmental Mutagenesis - Volume 633, Issue 1, 1 September 2007, Pages 21–34