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4 protocols using cc 2551

1

Culturing Osteosarcoma, Kidney, and Mammary Cells

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U2OS osteosarcoma cells (obtained directly from American Type Culture Collection, HTB-96) were maintained in McCoy’s 5A medium supplemented with 10% (v/v) FBS (Hyclone), 100 units/ml of penicillin, and 0.1 mg/ml streptomycin. 293T cells were maintained in DMEM supplemented with 10% (v/v) FBS (Hyclone), 100 units/ml penicillin, and 0.1 mg/ml streptomycin. hTERT-immortalized Human Mammary Epithelial Cells (HMECs) from a reduction mammoplasty were purchased directly from Lonza (CC-2551), immortalized with human telomerase, and maintained in MEGM (Lonza).
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2

Culturing Primary and Immortalized Breast Cells

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Primary human breast epithelial HMEC cells (CC-2551, Lonza, Basel, Switzerland) and immortalized breast epithelial 184A1 cells (a kind gift from A/Prof. Darren Shafren, the University of Newcastle) were cultured in mammary epithelial basal medium (MEBM) supplemented with bovine pituitary extract (BPE) (0.4%), human epidermal growth factor (hEGF) (0.1%), hydrocortisone (0.1%), GA-1000 (0.1%), and insulin (0.1%) (Lonza). MCF7 (HTB-22, American Type Culture Collection (ATCC), Manassas VA, USA), T-47D (HTB-133, ATCC), MDA-MB-231 (HTB-26, ATCC), and SKBR3 (HTB-30, ATCC; a kind gift from A/Prof. Darren Shafren, the University of Newcastle) breast cancer cell lines were cultured in RPMI-1640 (GE Healthcare, Chicago, IL, USA) supplemented with 10% FBS (Sigma–Aldrich, St. Louis, MO, USA) and 2 mM L-glutamine (GE Healthcare). All cells were maintained at 37 °C with 5% CO2 and used within four years of purchase from ATCC or Lonza, or authenticated using the GenePrint 10 System (Promega, Madison, WI, USA) as per the manufacturer’s instructions, and DNA fragments were detected by the Australian Genome Research Facility (AGRF) (Melbourne, VIC, Australia).
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3

Culturing Human Mammary Epithelial Cells

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The human primary cell line (HMEC) was cultured in mammary epithelial cell growth medium (MEGM, Gibco) supplemented with growth factors (MEGM-SingleQuots CC-4136, Gibco) bovine pituitary extract (BPE), hydrocortisone, human epidermal growth factor (hEGF), insulin and gentamicin/amphotericin-B (37 °C, 7% CO2). These cells (CC-2551) were obtained from Lonza.
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4

Comprehensive TNBC Cell Line Characterization

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Nine of the 12 TNBC cell lines, as well as the non-transformed, immortalized control breast cell line MCF10A were obtained from the American Type Culture Collection (ATCC, Manassas, VA 20110, USA). Excluding BT-20 and MDA-MB-231, which were received in 2012, the cell lines were received in 2011. MDA-MB-468, BT-474, and ZR-75-1 were obtained by the Cell Culture Facility at Fox Chase Cancer Center from ATCC as part of the NCI-60 panel. The NCI-60 panel was obtained in 2003. The two additional TNBC cell lines, CAL-148 and MFM-223, were purchased from the Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH (Braunschweig, Germany) in 2011. The suppliers routinely authenticate the cell lines by short tandem repeat profiling though the cell lines were not authenticated by our laboratory. All cell lines were amplified and frozen within 2 months of receipt. Cell lines are periodically tested for Mycoplasma contamination using DAPI (4′,6-diamidino-2-phenylindole) to stain DNA. Two different primary human mammary epithelial cell (HMEC) isolates were obtained from GIBCO (Details A10565) and Lonza (CC-2551), respectively, in 2012. Culture media for the cell lines can be found in Supplementary Table S1.
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