title: mCPC_E8.5_067
organism: Mus musculus
description: Protocols: The spleen from a C57BL/6Jax mouse was mashed by a 2-ml syringe plunger through a 70 μm cell strainer (Fisher Scientific 10788201) into 30 ml 1X DPBS (ThermoFisher 14190169) supplied with 2 mM EDTA and 0.5% (w/v) BSA (Sigma A9418). Cells were centrifuged down, supernatant was removed, and the cell pellet was briefly vortexed. 5 ml 1X RBC lysis buffer (ThermoFisher 00-4300-54) was used to resuspend the cell pellet, and the cell suspension was vortexed again, and left on bench for 5 minutes to lyse red blood cells. Then 45 ml 1X DPBS was added, and cells were centrifuged down. 30 ml 1X DPBS were used to resuspend the cell pellet. The cell suspension was passed through a Miltenyi 30 μm Pre-Separation Filter (Miltenyi 130-041-407), and the cell number was determined using C-chip counting chamber (VWR DHC-N01). All centrifugations were done at 500 g, 4 °C, 5 minutes. After tagmentation, DAPI was added at a final concentration of 1 ug/ml. Then DAPI positive nuclei were sorted into 384-well plate using BD-INFLUX sorter. The nuclei sorting was performed at the Flow Cytometry facility at the Wellcome Trust Sanger Institute. Nuclei prepration and ATAC-seq procedure are performed simultaneously, i.e. Fast-ATAC protocol was used (Corces et al. Nature Genetics, 48, 1193-1203, 2016). Briefly, 50,000 cells were pelleted down at 500 g, 4 degree for 5 minutes. Then cell pellet was resuspended in 50 ul tagmentation mix containing 33 mM Tris-acetate, pH7.8, 66 mM potassium acetate, 10 mM magnesium acetate, 16% (v/v) dimethylformamide, 0.01% digitonin, 5 ul Tn5 transposes (Nextera kit, Illumina Cat No. FC-121-1030). The tagmentation reaction was put on a thermomixer, with 37 degree for 30 minutes. Then reaction was stopped by adding 50 ul 20 mM EDTA pH 8.0. After tagmentation, DAPI was added at a final concentration of 1 ug/ml. Then DAPI positive nuclei were sorted into 384-well plate using BD-INFLUX sorter. The nuclei sorting was performed at the Flow Cytometry facility at the Wellcome Trust Sanger Institute. DNA was purified first by Qiagen minElute PCR purification kit according to the manufacturer's instruction, then by AmupureXP beads with 0.5X upper cutoff and a 1.2X lower cutoff according to manufacturer's instruction. Libraries were constructed in the Illumina Nextera DNA Library preparation kit.
attributes.tag: ENA-FIRST-PUBLIC
attributes.value: 2018-10-10T17:03:13Z
attributes.tag: ENA-LAST-UPDATE
attributes.value: 2018-10-05T14:52:10Z
attributes.tag: External Id
attributes.value: SAMEA4958078
attributes.tag: INSDC center name
attributes.value: WELLCOME TRUST SANGER INSTITUTE
attributes.tag: INSDC first public
attributes.value: 2018-10-10T17:03:13Z
attributes.tag: INSDC last update
attributes.value: 2018-10-05T14:52:10Z
attributes.tag: INSDC status
attributes.value: public
attributes.tag: Submitter Id
attributes.value: E-MTAB-67141538747278:mCPC_E8.5_067
attributes.tag: age
attributes.value: 8.5
attributes.tag: broker name
attributes.value: ArrayExpress
attributes.tag: cell type
attributes.value: cardiomyocyte
attributes.tag: common name
attributes.value: house mouse
attributes.tag: genotype
attributes.value: wild type genotype
attributes.tag: individual
attributes.value: mouse 6
attributes.tag: organism part
attributes.value: heart
attributes.tag: post analysis well quality
attributes.value: pass
attributes.tag: sample name
attributes.value: E-MTAB-67141538747278:mCPC_E8.5_067
attributes.tag: scientific_name
attributes.value: Mus musculus
attributes.tag: sex
attributes.value: male
attributes.tag: strain
attributes.value: C57BL/6J