Abstract
During S-phase both DNA replication and histone deposition must be co-ordinated at and around the replication fork. Replication stress can interfere with the fidelity of this process and can result in genomic instability. The study of proteins associated with DNA replication forks is important for a detailed understanding of DNA replication and chromatin assembly both under basal as well as replication stress conditions. iPOND (isolation of Proteins on Nascent DNA) allows the temporal study of proteins and protein modifications associated with replication forks in a variety of conditions, allowing the ‘tracing’ of protein association and histone deposition and maturation at active, stalled and damaged replication forks. Importantly, low oxygen (hypoxic) conditions, found in tumours, can result in replication stress. Here we describe the adaptation of the iPOND technique allowing the isolation of proteins and protein modifications specifically with replication forks undergoing hypoxia-induced replication stress. Furthermore, we describe the adaptation of this method for the study of factors associated with replication forks recovering from hypoxia-induced replication stress following periods of reoxygenation. These adaptations are important in order to study proteins associated with replication forks undergoing replication stress in physiologically relevant conditions.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Dungrawala H, Cortez D. Purification of proteins on newly synthesized DNA using iPOND. Methods Mol Biol. 2015;1228:123–31.
Pires IM, et al. Effects of acute versus chronic hypoxia on DNA damage responses and genomic instability. Cancer Res. 2010;70(3):925–35.
Bester AC, et al. Nucleotide deficiency promotes genomic instability in early stages of cancer development. Cell. 2011;145(3):435–46.
Hammond EM, et al. The meaning, measurement and modification of hypoxia in the laboratory and the clinic. Clin Oncol (R Coll Radiol). 2014;26(5):277–88.
Olcina MM, et al. Replication stress and chromatin context link ATM activation to a role in DNA replication. Mol Cell. 2013;52(5):758–66.
Hammond EM, Green SL, Giaccia AJ. Comparison of hypoxia-induced replication arrest with hydroxyurea and aphidicolin-induced arrest. Mutat Res. 2003;532(1–2):205–13.
Sirbu BM, et al. Analysis of protein dynamics at active, stalled, and collapsed replication forks. Genes Dev. 2011;25(12):1320–7.
Sirbu BM, Couch FB, Cortez D. Monitoring the spatiotemporal dynamics of proteins at replication forks and in assembled chromatin using isolation of proteins on nascent DNA. Nat Protoc. 2012;7(3):594–605.
Lopez-Contreras AJ, et al. A proteomic characterization of factors enriched at nascent DNA molecules. Cell Rep. 2013;3(4):1105–16.
Cortez D. Preventing replication fork collapse to maintain genome integrity. DNA Repair (Amst). 2015;32:149–57.
Leung KH, Abou El Hassan M, Bremner R. A rapid and efficient method to purify proteins at replication forks under native conditions. Biotechniques. 2013;55(4):204–6.
Sirbu BM, et al. Identification of proteins at active, stalled, and collapsed replication forks using isolation of proteins on nascent DNA (iPOND) coupled with mass spectrometry. J Biol Chem. 2013;288(44):31458–67.
Olcina del MM. Hypoxia-induced chromatin changes and ATM signalling. 2014, DPhil. University of Oxford.
Acknowledgements
We are very grateful to Bianca Sirbu and David Cortez for help and advice on the iPOND procedure when we were adapting it for use under hypoxia and reoxygenation conditions. This work was supported by a Cancer Research UK grant (awarded to E.M.H.) and an MRC Centenary award (awarded to M.M.O.).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this paper
Cite this paper
Olcina, M.M., Giaccia, A.J., Hammond, E.M. (2016). Isolation of Proteins on Nascent DNA in Hypoxia and Reoxygenation Conditions. In: Koumenis, C., Coussens, L., Giaccia, A., Hammond, E. (eds) Tumor Microenvironment. Advances in Experimental Medicine and Biology, vol 899. Springer, Cham. https://doi.org/10.1007/978-3-319-26666-4_3
Download citation
DOI: https://doi.org/10.1007/978-3-319-26666-4_3
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-26664-0
Online ISBN: 978-3-319-26666-4
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)