Low-dose DNA damage and replication stress responses quantified by optimized automated single-cell image analysis
2009
Maintenance of genome integrity is essential for homeostasis and survival as impaired DNA damage response (DDR) may predispose to grave pathologies such as neurodegenerative and immunodeficiency syndromes, cancer and premature aging. Therefore, accurate assessment of DNA damage caused by environmental or metabolic genotoxic insults is critical for contemporary biomedicine. The available physical, flow cytometry and sophisticated scanning approaches to DNA damage estimation each have some drawbacks such as insufficient sensitivity, limitation to analysis of cells in suspension, or high costs and demand for trained personnel. Here we present an option how to transform a regular fluorescence microscope and personal computer with common software into a functional alternative to high-throughput screening devices. In two detailed protocols we introduce a new semi-automatic procedure allowing for very sensitive, quantitative, rapid and simple fluorescence image analysis in thousands of adherent cells per day. ...
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