Abstract
Ataxia telangiectasia mutated (ATM) protein kinase detects double-strand breaks (DSBs) caused by such environmental factors like ionizing radiation (IR), while ataxia telangiectasia mutated and Rad-3 related (ATR) is activated by the presence of single-stranded DNA areas (ssDNA). Moreover, biological reports show that ATR can be also activated in DSBs repair pathway. Based on experimental reports, we confirmed that the factor responsible for ATR activation may be ssDNA formedS after resection of DSBs by repair complexes. In this study, we propose a novel stochastic mathematical model of ATR-ATM-p53 pathways. The model demonstrates the process of resection and helps to explain the impact of the investigated modules on DNA damages repair. Our results show that the resection of DNA ends accelerates DNA damage repair. Disorders in the mechanisms of DNA repair and resection cause decrease in viability of cells population.
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This project was funded by the Polish National Center for Science granted by decision number DEC-2012/05/D/ST7/02072.
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Kurpas, M., Jonak, K., Puszynski, K. (2016). The Resection Mechanism Promotes Cell Survival After Exposure to IR. In: Gruca, A., Brachman, A., Kozielski, S., Czachórski, T. (eds) Man–Machine Interactions 4. Advances in Intelligent Systems and Computing, vol 391. Springer, Cham. https://doi.org/10.1007/978-3-319-23437-3_19
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DOI: https://doi.org/10.1007/978-3-319-23437-3_19
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