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Updated: Dec 25, 2025

Reusable Single Cell for Iterative Epigenomic Analyses
Published on: February 11, 2022
Isolation and analysis of rereplicated DNA by Rerep-Seq
Johannes Menzel1,2, Philip Tatman1,3, Joshua C Black1,2,3
1University of Colorado Anschutz Medical Campus, Department of Pharmacology, 12800 E 19th Ave, Aurora, CO 80045, USA.
Researchers developed Rerep-Seq, a new method to identify DNA rereplication. This technique reveals that DNA rereplication in yeast is non-random, occurring in large domains across multiple replication origins.
Area of Science:
- Genomics
- Molecular Biology
- Cancer Research
Background:
- Gene copy number changes are linked to genomic instability, cancer, and developmental issues.
- DNA rereplication is a suspected source of gene amplifications, but identifying rereplicated sequences has been challenging.
Purpose of the Study:
- To introduce Rerep-Seq, a novel technique for enriching and analyzing rereplicated DNA.
- To investigate the patterns and conditions of DNA rereplication in biological systems.
Main Methods:
- Developed Rerep-Seq, a DNA sequencing-based enrichment method for rereplicated DNA.
- Validated the technique by inducing and analyzing DNA rereplication in yeast (Saccharomyces cerevisiae) and human cells.
Main Results:
- Rerep-Seq successfully enriches for rereplicated DNA sequences.
- Induced rereplication in yeast is not random, occurring in broad domains.
- These domains encompass multiple replication origins and topological boundaries.
Conclusions:
- Rerep-Seq is a versatile tool applicable across species for studying DNA rereplication.
- The findings challenge previous models by demonstrating non-random, domain-specific patterns of DNA rereplication.
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05:22Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion
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