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Related Experiment Video

Updated: Feb 5, 2026

Pre-Implantation Genetic Testing for Aneuploidy on a Semiconductor Based Next-Generation Sequencing Platform
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Mapping mammalian replication domains using the ion torrent semiconductor sequencing platform.

Shin-Ichiro Takebayashi1, Shin Ogata2, Masato Ogata1

  • 1a Department of Biochemistry and Proteomics, Graduate School of Medicine , Mie University , Tsu , Japan.

Bioscience, Biotechnology, and Biochemistry
|September 11, 2018
PubMed
Summary

Semiconductor sequencing technology successfully maps mammalian replication domains, which are chromosomal units with similar DNA replication timing. This new method provides results comparable to traditional techniques for DNA replication studies.

Keywords:
DNA replicationnext generation sequencingreplication domain

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Area of Science:

  • Genomics
  • Molecular Biology
  • Epigenetics

Background:

  • DNA replication timing is crucial for genome stability and gene expression regulation.
  • Mammalian replication domains are large chromosomal units characterized by coordinated DNA replication timing.
  • Current methods for mapping replication domains, such as microarrays, are effective but can be labor-intensive.

Purpose of the Study:

  • To investigate the utility of semiconductor-based sequencing technology for mapping mammalian replication domains.
  • To establish a novel, potentially more efficient method for generating replication domain maps.
  • To compare the accuracy and resolution of semiconductor sequencing-based mapping with conventional methods.

Main Methods:

  • Purification of replicating DNA from mammalian cells (mouse embryonic stem cells).
  • High-throughput sequencing of the purified replicating DNA using the Ion Torrent platform.
  • Bioinformatic analysis to identify and map replication domains based on sequencing data.
  • Comparison of the generated map with data from a conventional microarray-based method.

Main Results:

  • Semiconductor-based sequencing successfully generated a replication domain map for mouse embryonic stem cells.
  • The replication domain map derived from Ion Torrent sequencing showed high concordance with maps obtained using traditional microarray-based approaches.
  • This demonstrates the feasibility of using semiconductor sequencing for large-scale replication domain mapping.

Conclusions:

  • Semiconductor sequencing technology is a viable and effective tool for mapping mammalian replication domains.
  • This approach offers a potentially faster and more scalable alternative to existing methods for studying DNA replication timing.
  • The findings pave the way for broader application of sequencing technologies in epigenomic research and understanding genome organization.