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5 protocols using wm164

1

Cell Line Maintenance and Validation

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HEK293, A375, WM164 cell lines were purchased from ATCC. WM983A and WM983B cell lines were purchased from Rockland (Philadelphia, PA). Melanocytes (CDKN2A null) were provided by Dr. Ian Robert Watson (McGill University). All cell lines were maintained in Dulbecco’s modified Eagle’s medium (DMEM) (GIBCO) with 4.5 g/liter glucose supplemented with 10% fetal bovine serum (FBS), 100 IU/ml penicillin, and 100 µg/ml streptomycin, under 37 °C/5%CO2 conditions. Colo829 cells were purchased from ATCC and maintained in Roswell Park Memorial Institute Medium (RPMI) with 10% FBS, 100 IU/ml penicillin and 100 µg/ml streptomycin, under 37 °C/5%CO2 conditions. Cells were regularly tested by PCR to exclude mycoplasma contamination.
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2

Culturing Cancer Cell Lines

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The human tongue squamous cell carcinoma cell line, HSC-3, was obtained from JCRB Cell Bank and authenticated by isoenzymology. The human melanoma cell line, WM164, was purchased from ATCC and authenticated by short tandem repeat profiling. Cells were cultivated in Dulbecco's Modification of Eagle's Medium (DMEM) with 4.5 g/L glucose, L-glutamine and sodium pyruvate, 10% fetal bovine serum (FBS), at 37 °C in 5% CO2.
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3

Cell Line Maintenance and Authentication

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HEK293, A375, WM164 cell lines were purchased from ATCC. WM983A and WM983B cell lines were purchased from Rockland (Philadelphia, PA). All cell lines were maintained in Dulbecco’s modified Eagle’s medium (DMEM) (GIBCO) with 4.5 g/liter glucose supplemented with 10% fetal bovine serum (FBS), 100 IU/mL penicillin, and 100 µg/mL streptomycin, under 37 °C/5%CO2 conditions. Colo829 cells were purchased from ATCC and maintained in Roswell Park Memorial Institute Medium (RPMI) with 10% FBS, 100 IU/mL penicillin and 100 µg/mL streptomycin, under 37 °C/5%CO2 conditions. Cells were regularly tested by PCR to exclude mycoplasma contamination.
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4

Cell Line Maintenance and Mycoplasma Testing

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The commercially available cell lines CHL-1 (human melanoma), HEK-293 (human embryonic kidney), PC-3 (human prostate carcinoma), and WM-164 (human melanoma) were obtained from American Type Culture Collection (Manassas, VA, USA). All the cell lines were maintained in DMEM supplemented with 10% fetal bovine serum 5 mM ultraglutamine and 100 U/ml penicillin–streptomycin (Gibco; Carlsbad, CA, USA). ). The cells were regularly tested for mycoplasma contamination using MycoAlert® Mycoplasma Detection Kit (Lonza; Basel, Switzerland).
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5

Melanoma Cell Lines and Vemurafenib Resistance

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Human melanoma cell lines (A375, SK-mel-28, UACC903, MGH-MC-1, K4, WM239, WM1158, WM164, G-mel, CHL-1, SK-mel-119) were developed in-house, purchased from the American Type Culture Collection (Rockville, MD) or gifts from Meenhard Herlyn (Wistar Institute, Philadelphia, PA). Vemurafenib resistant melanoma cell lines (A375-P, SK-Mel 28-P, UACC903-P, MGH-MC-1-P, K4-P, WM239-P and WM1158-P) were obtained by sequentially exposing of cells to escalating doses of VEM in 2014. DMEM medium with 10% fetal bovine serum (FBS), supplemented with 100 units/ml penicillin, 100 μg/ml streptomycin, and 2 mM glutamine was used for routine culturing of cells; VEM-resistant cells were cultured in VEM-free media for 10–14 days prior to re-testing VEM sensitivity; this drug holiday period had no effect on the VEM resistance (data not shown). All cells were incubated in a humidified atmosphere of 95% air and 5% CO2 at 37°C. Tumor specimens from patients were obtained prior to treatment with BRAFi (vemurafenib) or BRAFi+MEKi (dabrafenib+trametinib) and post-relapse as indicated in Table S1. Acquisition of tissue was covered under a protocol approved by the DF/Harvard Cancer Center (legacy #11-181; Boston, U.S.) in accordance with the Declaration of Helsinki.
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