title: GSM5466906: β-catenin ChIP-seq from RPMI8402 cell line treated with LiCl RBLS2; Homo sapiens; ChIP-Seq
library_construction_protocol: Cells were crosslinked with 0.5% formaldehyde and lysated. Lysates were clarified from sonicated nuclei and protein-DNA complexes were isolated with antibody. DNA purification with GFX Kit [GE Healthcare Life Sciences Ref.28-9034-71] Samples were digested with 0.1% collagenase and single-cell suspension was stained as described. Different subpopulations were directly sorted in a total volume of 10  ml of reaction buffer and processed for obtaining DNA following manufacture's protocol. DNA amplification was performed by Long Distance PCR (LD-PCR) and the PCR-amplified DNA purified by immobilization on AMPure XP beads (Agencourt AMPure XP kit). Samples were analyzed with Agilent High Sensitivity DNA Kit (Agilent, Cat. No. 5067-4626). Covaris shearing was used for Illumina Low input sample preparation and Double last bead purification was performed to remove fragments below 200 bp. Next, samples were used to generate an Illumina sequencing library by NEBNext Ultra protocol following kit instructions. After PCR amplification of the library, the quality was checked on a Bioanalyzer and total DNA was sequenced using an Illumina HiSeq 2000 sequencer.