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Related Experiment Video

Updated: Sep 4, 2025

ATAC-Seq Optimization for Cancer Epigenetics Research
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ATAC-seq Optimization for Cancer Epigenetics Research.

Mikhala Cooper1, Atrayee Ray1, Atrayee Bhattacharya2

  • 1University of North Dakota School of Medicine and Health Sciences.

Journal of Visualized Experiments : Jove
|July 18, 2022
PubMed
Summary
This summary is machine-generated.

Transposase-accessible chromatin with high-throughput sequencing (ATAC-seq) identifies open DNA regions. Optimizing cell lysis, Tn5 enzyme titration, and cell input is crucial for high-quality ATAC-seq data in epithelial cells.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Epigenetics

Background:

  • Genomic DNA is packaged into chromatin, a barrier to gene transcription.
  • Transcription factors recruit remodeling complexes to open chromatin for gene activation.
  • Identifying open chromatin regions is vital for monitoring gene activity in biological events like cancer progression.

Purpose of the Study:

  • To provide optimized ATAC-seq (transposase-accessible chromatin with high-throughput sequencing) methods for epithelial cell types.
  • To detail critical parameters for successful ATAC-seq library preparation.

Main Methods:

  • Utilized the hyperactive Tn5 transposase to probe DNA accessibility.
  • Described ATAC-seq library preparation protocols.
  • Focused on optimizing cell lysis buffer, Tn5 enzyme titration, and cell input volume.

Main Results:

  • Established ATAC-seq optimization methods for epithelial cells.
  • Demonstrated the importance of specific parameters for high-quality data acquisition.
  • Highlighted the ease of use and low cell input requirements of ATAC-seq.

Conclusions:

  • Optimized ATAC-seq protocols are essential for reliable open chromatin identification.
  • ATAC-seq is a valuable tool for studying gene regulation in various cell types, including cancer.
  • The described methods facilitate high-quality ATAC-seq library preparation in epithelial cells.