GSM5918623: E14 mESC G_H-M-Dyad-seq; Mus musculus; OTHER
GSM5918623
Bulk genomic DNA was extracted using the DNeasy kit (Qiagen, 69504) according to the manufacturer's recommendations. Bulk total RNA was extracted using TRIzol reagent (Invitrogen, 15596018) according to the manufacturer's recommendations. For single cell experiments, whole cell lysate was used by soring cells via FACs directly into lysis buffer. For all bulk Dyad-seq experiments, 100 ng of purified genomic DNA was resuspended in 20 µL of glucosylation mix (1x CutSmart buffer (NEB, B7204S), 2.5x UDP-glucose, 10 U T4-BGT (NEB, M0357L)) and the samples were incubated at 37°C for 16 hours. Afterwards, 10 µL of protease mix (100 µg protease (Qiagen, 19155), 1x CutSmart buffer) was added to each sample, and the samples were heated to 50°C for 5 hours, 75°C for 20 minutes, and 80°C for 5 minutes. After this, processing of the samples differed based on the version of Dyad-seq used. For M-M-Dyad-seq and M-H-Dyad-seq, 10 µL of MspJI digestion mix (2 U MspJI, 1x enzyme activator solution, 1x CutSmart buffer) was added to each sample and the samples were heated to 37°C for 5 hours, and 65°C for 20 minutes. Next, 1 µL of barcoded 1 µM double-stranded adapter was added. Then 9 µL of ligation mix (1.11x T4 ligase reaction buffer, 4.44 mM ATP (NEB, P0756L), 2000 U T4 DNA ligase (NEB, M0202M)) was added to each sample, and the samples were incubated at 16°C for 16 hours. For H-M-Dyad-seq and H-H-Dyad-seq, 10 µL of AbaSI digestion mix (10 U AbaSI (NEB, R0665S), 1x CutSmart buffer) was added to each sample and the samples were incubated at 25°C for 2 hours, and then heated to 65°C for 20 minutes. Next, 1 µL of barcoded 1 µM double-stranded adapter was added. Then 9 µL of ligation mix (1.11x T4 ligase reaction buffer, 4.44 mM ATP (NEB, P0756L), 2000 U T4 DNA ligase (NEB, M0202M)) was added to each sample, and the samples were incubated at 16°C for 16 hours. After ligation, up to three barcoded libraries of the same type were pooled and all Dyad-seq versions were subjected to a 1x AMPure XP bead cleanup (Beckman Coulter, A63881), and eluted in 40 µL of water. M-M-Dyad-seq and H-M-Dyad-seq samples were then concentrated to a volume of 28 µL and subjected to nucleobase conversion using the NEBNext enzymatic methyl-seq conversion module (NEB, E7125S) according to the manufacturer's recommendations except for performing the final elution step in 40 µL of water. For M-H-Dyad-seq and H-H-Dyad-seq samples, nucleobase conversion was performed using the NEBNext enzymatic methyl-seq conversion module similar to what has been described previously11. Briefly, samples were first concentrated to a volume of 17 µL. Then 4 µ