Rapid high-resolution measurement of DNA replication timing by droplet digital PCR
Rapid high-resolution measurement of DNA replication timing by droplet digital PCR
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通过液滴数字 PCR 快速高分辨率测量 DNA 复制时间
DOI:
10.1101/208546
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Batrakou D
中科院分区:
文献类型:
--
作者:
Batrakou D
Genomes are replicated in a reproducible temporal pattern. Current methods for assaying allele replication timing are time consuming and/or expensive. These include high-throughput sequencing which can be used to measure DNA copy number as a proxy for allele replication timing. Here, we use droplet digital PCR to study DNA replication timing at multiple loci in budding yeast and human cells. We establish that the method has temporal and spatial resolutions comparable to the high-throughput sequencing approaches, while being faster than alternative locus-specific methods. Furthermore, the approach is capable of allele discrimination. We apply this method to determine relative replication timing across timing transition zones in cultured human cells. Finally, multiple samples can be analysed in parallel, allowing us to rapidly screen kinetochore mutants for perturbation to centromere replication timing. Therefore, this approach is well suited to the study of locus-specific replication and the screening ofcis- andtrans-acting mutants to identify mechanisms that regulate local genome replication timing.
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