Abstract
Although all of the DNA in an eukaryotic cell replicates during the S-phase of cell cycle, there is a significant difference in the actual time in S-phase when a given chromosomal segment replicates. Methods are described here for generation of high-resolution temporal maps of DNA replication in synchronized human cells. This method does not require amplification of DNA before microarray hybridization and so avoids errors introduced during PCR. A major advantage of using this procedure is that it facilitates finer dissection of replication time in S-phase. Also, it helps delineate chromosomal regions that undergo biallelic or asynchronous replication, which otherwise are difficult to detect at a genome-wide scale by existing methods. The continuous TR50 (time of completion of 50% replication) maps of replication across chromosomal segments identify regions that undergo acute transitions in replication timing. These transition zones can play a significant role in identifying insulators that separate chromosomal domains with different chromatin modifications.
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© 2009 Humana Press, a part of Springer Science+Business Media, LLC
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Karnani, N., Taylor, C.M., Dutta, A. (2009). Microarray Analysis of DNA Replication Timing. In: Pollack, J. (eds) Microarray Analysis of the Physical Genome. Methods in Molecular Biology™, vol 556. Humana Press. https://doi.org/10.1007/978-1-60327-192-9_14
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DOI: https://doi.org/10.1007/978-1-60327-192-9_14
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