Chapter title |
Generation of Whole Genome Bisulfite Sequencing Libraries for Comprehensive DNA Methylome Analysis
|
---|---|
Chapter number | 16 |
Book title |
Epigenome Editing
|
Published in |
Methods in molecular biology, January 2018
|
DOI | 10.1007/978-1-4939-7774-1_16 |
Pubmed ID | |
Book ISBNs |
978-1-4939-7773-4, 978-1-4939-7774-1
|
Authors |
Dulce B. Vargas-Landin, Jahnvi Pflüger, Ryan Lister |
Abstract |
Whole genome bisulfite sequencing (WGBS) enables the detection of DNA methylation at single base-pair resolution. The treatment of DNA with sodium bisulfite allows the discrimination of methylated and unmethylated cytosines, but the power of this technology can be limited by the input amounts of DNA and the length of DNA fragments due to DNA damage caused by the desulfonation process. Here, we describe a WGBS library preparation protocol that minimizes the loss and damage of DNA, generating high quality libraries amplified with fewer PCR cycles, and hence data with fewer PCR duplicates, from lower amounts of input material. Briefly, genomic DNA is sheared, end-repaired, 3'-adenylated, and ligated to adaptors with fewer cleanup steps in between, minimizing DNA loss. The adapter-ligated DNA is then treated with sodium bisulfite and amplified with few PCR cycles to reach the yield needed for sequencing. |
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