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Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
Published on: February 24, 2015
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Tagmentation-Based Library Preparation for Low DNA Input Whole Genome Bisulfite Sequencing
Dieter Weichenhan1, Qi Wang2,3, Andrew Adey4
1Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany. d.weichenhan@dkfz.de.
Methods in Molecular Biology (Clifton, N.J.)
|December 11, 2017
Summary
Tagmentation-based whole genome bisulfite sequencing (TWGBS) offers a low-DNA input method for comprehensive methylome analysis. This technique captures crucial regulatory elements, advancing disease research with precious samples.
Area of Science:
- Epigenetics and Genomics
- Molecular Biology
Background:
- DNA methylation patterns are crucial in disease development.
- Whole genome bisulfite sequencing (WGBS) provides comprehensive methylome coverage.
- Existing low-input methods analyze limited genomic regions.
Purpose of the Study:
- To introduce tagmentation-based WGBS (TWGBS) as an efficient alternative.
- To enable methylome analysis from limited DNA quantities.
- To cover regulatory features like enhancers and noncoding RNAs.
Main Methods:
- Utilized a hyperactive transposase for simultaneous DNA fragmentation and adapter ligation.
- Adapted conventional WGBS library preparation for reduced DNA input.
- Applied TWGBS to precious biological specimens.
Main Results:
- TWGBS successfully analyzes the complete methylome.
- The method requires only nanogram amounts of DNA.
- TWGBS covers important regulatory features missed by other low-input methods.
Conclusions:
- TWGBS is a powerful tool for epigenomic studies using limited DNA.
- This method facilitates research on sorted cells and micro-dissected tissues.
- TWGBS enhances the study of DNA methylation in disease contexts.
