Abstract
Exposure of cells to DNA-damaging agents, such as ionizing radiation (IR), results in perturbation of cell cycle progression. IR activates cell cycle checkpoints that arrest the cell cycle at the G1/S, S, and G2/M phases. The DNA damage-signaling network involves a number of important DNA damage response factors that are required for maintaining genome stability and prevention of cancer. These factors are involved in the regulation of cell cycle checkpoints and include ATM, NBS1, BRCA1, Chk2, and p53. Here we describe a series of assays that are often used to analyze cell cycle checkpoints after IR. These assays include a G1/S checkpoint assay that measures 5-bromodeoxyuridine incorporation into DNA, an S-phase checkpoint assay that measures DNA synthesis at a very early time point after IR, and a G2/M checkpoint assay that quantitates histone H3 phosphorylation. This collection of assays allows us to investigate the specific functions of proteins involved in regulating different cell cycle checkpoints in mammalian cells as a response to IR.
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References
Ciccia A, Elledge SJ (2010) The DNA damage response: making it safe to play with knives. Mol Cell 40(2):179–204
Lim DS, Kim ST, Xu B, Maser RS, Lin J, Petrini JH, Kastan MB (2000) ATM phosphorylates p95/nbs1 in an S-phase checkpoint pathway. Nature 404(6778):613–617
Shiloh Y (1997) Ataxia-telangiectasia and the Nijmegen breakage syndrome: related disorders but genes apart. Annu Rev Genet 31:635–662
Kastan MB, Onyekwere O, Sidransky D, Vogelstein B, Craig RW (1991) Participation of p53 protein in the cellular response to DNA damage. Cancer Res 51(23 Pt 1):6304–6311
Lowe SW, Ruley HE, Jacks T, Housman DE (1993) p53-dependent apoptosis modulates the cytotoxicity of anticancer agents. Cell 74(6):957–967
Xu B, Kim S, Kastan MB (2001) Involvement of Brca1 in S-phase and G(2)-phase checkpoints after ionizing irradiation. Mol Cell Biol 21(10):3445–3450
Wang B, Matsuoka S, Carpenter PB, Elledge SJ (2002) 53BP1, a mediator of the DNA damage checkpoint. Science 298(5597):1435–1438
Zhao S, Weng YC, Yuan SS, Lin YT, Hsu HC, Lin SC, Gerbino E, Song MH, Zdzienicka MZ, Gatti RA, Shay JW, Ziv Y, Shiloh Y, Lee EY (2000) Functional link between ataxia-telangiectasia and Nijmegen breakage syndrome gene products. Nature 405(6785):473–477
Goto H, Tomono Y, Ajiro K, Kosako H, Fujita M, Sakurai M, Okawa K, Iwamatsu A, Okigaki T, Takahashi T, Inagaki M (1999) Identification of a novel phosphorylation site on histone H3 coupled with mitotic chromosome condensation. J Biol Chem 274(36):25543–25549
Hendzel MJ, Wei Y, Mancini MA, Van Hooser A, Ranalli T, Brinkley BR, Bazett-Jones DP, Allis CD (1997) Mitosis-specific phosphorylation of histone H3 initiates primarily within pericentromeric heterochromatin during G2 and spreads in an ordered fashion coincident with mitotic chromosome condensation. Chromosoma 106(6):348–360
Acknowledgements
This work was supported by NIH grant CA155025, the Mel Klein Family Fund, and start-up funds from the University of Texas MD Anderson Cancer Center.
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Wang, B. (2014). Analyzing Cell Cycle Checkpoints in Response to Ionizing Radiation in Mammalian Cells. In: Noguchi, E., Gadaleta, M. (eds) Cell Cycle Control. Methods in Molecular Biology, vol 1170. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-0888-2_15
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DOI: https://doi.org/10.1007/978-1-4939-0888-2_15
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