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13 protocols using dimethysulfoxide

1

Cell Signaling Pathway Modulation

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Williams’ Medium E, nefazodone, trazodone, buspirone, penicillin, streptomycin, salubrinal, and dimethysulfoxide (DMSO) were from Sigma-Aldrich (St. Louis, Missouri). Fetal bovine serum (FBS) was obtained from Atlanta Biologicals (Lawrenceville, Georgia). 4-Phenylbutyrate (4-PBA) was from BioVision (Milpitas, California). Blasticidin hydrochloride was purchased from Life Technologies (Grand Island, New York). SB203580 (p38 inhibitor), SP600125 (JNK inhibitor), and PD184352 (ERK1/2 inhibitor) were from LC Laboratories (Woburn, Massachusetts).
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2

Metabolic Profiling of Cell Lines

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Williams' Medium E, perhexiline maleate salt, D-(+)-glucose, D-(+)-galactose, cyclosporine A, bongkrekic acid, and dimethysulfoxide (DMSO) were purchased from Sigma-Aldrich (St. Louis, MO). Fetal bovine serum (FBS) was obtained from Atlanta Biologicals (Lawrenceville, GA). Dulbecco's modified Eagle's medium (DMEM), DMEM deprived of glucose, sodium pyruvate, N-2-hydroxyethylpiperazine-N′-2-ethanesulfonic acid (HEPES), and antibiotic-antimycotic were obtained from Life Technologies (Carlsbad, CA).
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3

Apoptosis-related Signaling Pathway Analysis

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Dronedarone, dimethysulfoxide (DMSO), Williams’ medium E, and MG-132 protease inhibitor were from Sigma-Aldrich (St. Louis, MO). Fetal bovine serum (FBS) was purchased from Atlanta Biologicals (Lawrenceville, GA). Antibiotic-antimycotic was from Life Technologies (Grand Island, NY). The general caspase inhibitor (Z-VAD-FMK), the caspase-3 inhibitor (Z-DEVD-FMK), the caspase-8 inhibitor (Z-IETD-FMK), the caspase-9 inhibitor (Z-LEHD-FMK), and the caspase-2 inhibitor (Z-VAVAD-FMK) were obtained from R&D systems (Minneapolis, MN). For Western blotting assays, the primary antibodies against the caspase-3, caspase-9, cleaved caspase-8, cytochrome c, Mcl-1, Bcl-2, Bax, Bad, phospho-JNK (Thr183/Thr185), JNK, phospho-p38 (Thr180/Tyr182), p38, phospho-ERK1/2 (Thr202/Tyr204), ERK1/2, PARP-1 (poly (ADP-ribose) polymerase), phospho-Chk1(Ser345), phospho-Chk2 (Thr68), and γ-H2A.X (Ser139) were purchased from Cell Signaling Technology (Danvers, MA). Antibody for topoisomerase I was obtained from Abcam (Cambridge, MA). Antibodies for caspase-2, α-Tubulin, topoisomerase IIα, and GAPDH were purchased from Santa Cruz Biotechnology (Santa Cruz, CA).
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4

Intraperitoneal Administration of 6r and 6s

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6r and 6s were dissolved in a vehicle of dimethysulfoxide (Sigma-Aldrich, St. Louis, MO), Emulphor® (Alkamuls EL 620L, Solvay, Princeton, NJ), ethanol (Sigma-Aldrich), and sterile saline (Aquilite System, Hospira Inc., Lake Forest, IL) in a ratio of 5:2:2:16, respectively. Drugs were delivered via intraperitoneal (i.p.) injection in a volume of 10 mL/kg.
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5

Culturing EGFR+ Cell Lines and Isolating PBMCs

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EGFR + A375 malignant melanoma and A549 lung carcinoma cell lines were cultured and expanded in DMEM (Sigma-Aldrich, D6546) supplemented with 4 mM l-Glutamine (Hyclone) and 10% fetal bovine serum (FBS, Hyclone). Peripheral blood mononuclear cells (PBMCs) from buffy coat obtained from healthy donors (n = 8) were isolated using Ficoll-Hypaque density gradient (Cytiva) and cryopreserved in FBS supplemented with 10% dimethysulfoxide (Sigma-Aldrich) until use.
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6

PBMC Isolation and Cryopreservation

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All ATL subtypes were included (S1 Table). PBMC were isolated from whole blood by density-gradient centrifugation using histopaque-1077 (Sigma-Aldrich, Poole) from EDTA-anticoagulated blood. Isolated PBMCs were washed twice in PBS then cryopreserved in FCS (Life technologies, Paisley) with 10% dimethysulfoxide (Sigma-Aldrich).
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7

Preparation of Cell Culture Solutions

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NaCl, KCl, CaCl2, MgCl2, NaOH, and dimethysulfoxide (DMSO) were purchased from Sigma-Aldrich (St. Louis, MO, USA). 4-(2-hydroxyethyl) piperazine-1-ethanesulfonicacid (HEPES) was purchased from DOJINDO (Kumamoto, Japan). Glucose was purchased from Wako Pure Chemicals Industries (Osaka, Japan).
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8

Colorimetric Cell Viability Assays

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Cells (2000/well) were seeded into 96-well plates and cultured for desired time frame, then stained with 100 μl of 0.5 mg/ml sterile3-(4,5-dimethythiazol-2-yl)-2,5-diphenyltetrazoliumbromide (MTT, Sigma, St. Louis, MO, US) at indicated time points for 4 h at 37°C, followed by removal of the culture medium and addition of 150 μl of dimethysulfoxide (Sigma). The absorbance was measured at 570 nm and 630 nm separately. All tests were performed in triplicate. The CCK8 assay is similar, while cells were stained with 10 μl of CCK8 solution (Dojindo Molecular Technologies Inc., China) for 2 h at 37°C, then the absorbance was measured at 450 nm and 630 nm separately.
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9

Cellular DNA Damage Analysis

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GAA, caffeine, wortmannin, 4,6-diamidino-2-phenylindole (DAPI), Propidium Iodide(PI) and dimethysulfoxide (DMSO) were purchased from Sigma (St Louis, MO). Gossypol and wortmannin were dissolved in DMSO and stored at −80°C. caffeine was dissolved in PBS and stored at −20°C. Anti-γH2AX monoclonal antibody was purchased from Upstate Technology (Lake Placid, NY). Alexa Fluor 488-conjugated AffiniPure Goat Anti-Mouse IgG (H + L) were purchased from Jackson ImmunoResearch (West Grove, PA).
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10

Adipocyte Differentiation Assay

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We purchased 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide, Oil Red O (ORO), dexamethasone, 3-isobutyl-1-methylxanthine (IBMX), insulin, dimethysulfoxide (DMSO), and shikonin from Sigma-Aldrich (St. Louis, MO, USA). Bovine serum (BS) and fetal BS (FBS) were obtained from Gibco (Grand Island, NY, USA). Antibodies against trimethylated H3K4 (H3K4me3; Millipore; 04-745) and trimethylated H3K27 (H3K27me3; Millipore, 07-449) were used for experiments.
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