title: GSM5766424: tumor tissue treated with DAC from PDX model (WGBS); Homo sapiens; Bisulfite-Seq
library_construction_protocol: Genomic DNA was isolated from the control and the DAC-treated CT26 cells and PDX tumors using a QIAamp genomic DNA Kit (Qiagen, Stockach, Germany) according to the instructions. The bisulfite-treated DNA was purified on a spin column and used to prepare the sequencing library using an EpiGnome Kit (Epicentre, Wisconsin, USA).In this procedure,bisulfite-treated single-stranded DNA was random-primed using a polymerase able to read uracil nucleotides to synthesize DNA that contained a specific sequence tag. The 3′ ends of the newly synthesized DNA strands were then selectively tagged with a second specific sequence, which resulted in doubly tagged DNA molecules with known sequence tags at their 5′ and 3′ ends.