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3 protocols using insulin transferrin selenium mix

1

Hepatocyte Differentiation from Stem Cells

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Stem cells at P2 were preconditioned with Iscove's modified Dulbecco's medium (IMDM; Gibco; Thermo Fisher Scientific, Inc.) containing 20 ng/ml epidermal growth factor and 10 ng/ml bFGF, following which they were differentiated into hepatocytes using a two-step protocol (13 (link)). The cells were then treated with differentiation medium, consisting of IMDM supplemented with 20 ng/ml hepatocyte growth factor (Thermo Fisher Scientific, Inc.), 10 ng/ml bFGF (Thermo Fisher Scientific, Inc.) and 0.61 g/l nicotinamide (Sigma-Aldrich; Merck KGaA) for 7 days. Subsequently, cells were transferred to maturation medium, consisting of IMDM with 20 ng/ml oncostatin M, 1 µmol/l dexamethasone and 50 mg/ml insulin-transferrin-selenium mix (all from Thermo Fisher Scientific, Inc.). The obtained cells were maintained in this medium (13 (link)).
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2

Culturing SCLC Cell Lines for Research

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The human SCLC cell lines NCI-H841, NCI-H1048, NCI-889, NCI-2171, NCI-146, NCI-H1963, HCC33 and NCI-H211 were obtained from the American Type Culture Collection (Manassas, VA, USA). Cells were grown in RPMI 1640 with 10% FetalClone (Thermo Fisher Scientific, Waltham, MA, USA) at 37 °C with 5% CO2 in a humidified incubator, except for NCI-H2171 and NCI-H889 cells, which were grown in a HITES medium (DMEM/F12 supplemented with 1% Glutamax, 100 U/mL penicillin, 100 µg/mL streptomycin, 4 µg/mL hydrocortisone (Sigma, St Louis, MO, USA), 5 ng/mL murine EGF and 1% of an insulin–transferrin–selenium mix (Gibco, Thermo Fisher Scientific, Waltham, MA, USA) with 5% FetalClone. Cell lines were authenticated and routinely tested for mycoplasma.
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3

Immortalized Human Prostate Cell Lines

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Prostate stromal (BHPrS-1) and epithelial (NHPrE-1 and BHPrE-1) cells were gifts from Dr. Simon Hayward (NorthShore Research Institute, Evanston, IL). NHPrE-1 and BHPrE-1 lines were generated from primary cells by spontaneous immortalization, whereas BHPrS-1 were immortalized using human telomerase reverse transcriptase (hTERT)30 (link). THP-1 leukemia, LNCaP, and 22RV1 prostate cancer lines were purchased from ATCC. C4–2B31 (link) cells were provided by Drs. Ruoxiang Wu and Leland Chung (Cedars-Sinai, Los Angeles, CA). NHPrE-1 and BHPrE-1 cells were cultured in Dulbeccòs Modified Eaglès Medium (DMEM):F12 in 1:1 ratio supplemented with 0.4% bovine pituitary extract, insulin-transferrin-selenium mix, epidermal growth factor (10ng/ml), antibiotic-antimycotic mix and 5% FBS (Thermo Fisher Scientific). THP-1, LNCaP, C4–2b and 22Rv1 cells were cultured in Roswell Park Memorial Institute-1640 (RPMI) medium containing 10% fetal bovine serum (FBS) and BHPrS-1 cells with 5% FBS.
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