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3 protocols using cell culture media components

1

Culturing Dnmt-Deficient Embryonic Stem Cells

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All cell culture media components were purchased from Invitrogen (Paisley, UK). Dnmt1 KO and Dnmt3a/3b double KO cells with matching WT were kind gifts from Dr. Masaki Okano (RIKEN Center for Developmental Biology, Kobe, Japan). ESCs were maintained on Nunc plates (Davidson & Hardy, Belfast, UK) treated with 0.1% gelatin (Sigma-Aldrich, Dorset, UK) and cultured in Knockout DMEM plus 15% knockout serum replacement, 1% ESC-qualified Foetal Bovine Serum, 1× NEAA, 2 mM l-glutamine, 0.1 mM β-mercaptoethanol (Sigma-Aldrich, Dorset, UK) and 1000U/ml LIF (Merck Millipore, Hertfordshire, UK).
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2

Modulation of STAT1/STAT3 Signaling in IMR-32 Cells

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IMR-32 cells were obtained from the American Type Culture Collection (Rockville, MA). Cell culture media components were obtained from Invitrogen Life Technologies (Carlbad, CA). Antibodies for STAT1, STAT3, β-actin, α-tubulin, β-tubulin and heterogeneous nuclear ribonucleoprotein A1 (hnRNP), and the oligonucleotides containing the consensus sequence for STAT1 and STAT3 were obtained from Santa Cruz Biotechnology (Santa Cruz, CA). The antibody for 4-hydroxynonenal was purchased from Abcam (Cambridge, MA). Antibodies for phosphotyrosine-701 STAT1 (pY701-STAT1), phosphoserine-727 STAT1 (pS727-STAT1), phosphotyrosine-705 STAT3 (pY705-STAT3), and phosphoserine-727 STAT3 (pS727-STAT3) were purchased from Cell Signaling Technologies (Danvers, MA). The reagents for EMSA assay were obtained from Promega (Madison, WI). Polyvinylidene difluoride (PVDF) membranes were obtained from Bio-Rad (Hercules, CA, USA). Chroma Spin-10 columns were obtained from Clontech (Mountain View, CA). Vinblastine (Vb), colchicine (Col), cytochalasin D (Cyt D), α-lipoic acid (LA) and all other reagents were of the highest quality available and were purchased from Sigma (St. Louis, MO).
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3

Cytotoxicity Assay Protocol

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3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), neutral red dye, resazurin, Triton X-100, 2-mercaptoethanol, low melting point (LMP) agarose, Tris hydrochloride (Tris-HCl) and methyl methanesulfonate (MMS) were purchased from Sigma-Aldrich Co. Dimethyl sulfoxide (DMSO), glacial acetic acid (CH 3 COOH), absolute ethanol (C 2 H 6 O), sodium hydroxide (NaOH), sodium chloride (NaCl) and potassium hydroxide (KOH) were bought from Merck KGaA. Cell culture media components and SyberGold® were all Invitrogen™ and purchased from Thermo Fisher Scientific Inc. Lactate dehydrogenase (LDH) protein from rabbit muscle and Tris base were purchased from Calbiochem, while potassium chloride (KCl) and disodium salt dihydrate (Na 2 EDTA) were purchased from Prolab. Finally, high purity
and normal melting point (NMP) agarose were supplied from VWR chemicals, Lonza Group AG and Bioline, respectively.
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