ChIP-Atlas: SRX971790

Antigen

Cell type Class: Placenta
Cell type: Placenta
MeSH Description: A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).

library_strategy: Bisulfite-Seq
library_source: GENOMIC
library_selection: RANDOM
library_construction_protocol: Genomic DNA was extracted using the QIAamp DNA Blood Mini Kit (Qiagen). 1µg of genomic DNA was fragmented into approximately 200-300bp using a Covarias sonication system (Covarias). After purification, the fragmented fractions were treated with a mix of T4 DNA polymerase, Klenow Fragment and T4 polynucleotide kinase to repair blunt and phosphorylate ends. Total RNA was extracted using the Invitrogen TRIzol® Reagent and then treated with RNase-free DNase I (Ambion) for 30 min. The integrity of total RNA was checked using an Agilent 2100 Bioanalyser. After purification, the fragmented fractions were treated with a mix of T4 DNA polymerase, Klenow Fragment and T4 polynucleotide kinase to repair blunt and phosphorylate ends. The blunt DNA fragments were subsequently 3'-adenylated using Klenow Fragment (3-5' exo-) and then ligated by T4 DNA Ligase to adapters that were synthesized with 5'-methylcytosine instead of 5'-cytosine and contain index sequences inside. After each step, the reaction products were purified using QIAquick PCR purification kit (Qiagen). The constructed libraries were quantified using a Qubit fluorometer with Quant-iT dsDNA HS Assay Kit (Invitrogen).