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3 protocols using iscove s modified dmem

1

CD34+ Cell Expansion and Differentiation

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CD34+ expansion media: serum-free StemSpan supplemented with 10 mL/mL CC-100 (both Stemcell Technologies), 2 U/mL erythropoietin (Amgen), 10−6 M dexamethasone (Sigma) and 100 U/ml penicillin/streptomycin (GIBCO, ThermoFisher Scientific). Differentiation media: Iscove’s Modified DMEM (Cellgro) with 3% AB serum (Atlanta Biologicals), 2% human plasma (Stemcell Tech), 10 mg/mL insulin (Sigma), 3 U/mL heparin, 200 ug/mL transferrin (Athens Research & Technology), 10 ng/mL stem cell factor (Peprotech), 3 U/mL erythropoietin. Freeze media: 50% characterized fetal bovine serum (Hyclone), 10% dimethyl sulfoxide (Sigma), and 40% Iscove’s Modified DMEM. Thaw media: Iscove’s Modified DMEM supplemented with 5% characterized fetal bovine serum.
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2

T Cell Differentiation Assay

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Naïve CD4+ T cells were purified from C57BL/6, RORγt−/−, or RORγtK31R/K31R mice by negative selection (Miltenyi Biotec). Suspensions of 4 × 105 cells/ml Iscove’s modified DMEM (Cellgro) containing 2 mM L-glutamine, 50 mM 2-ME, 100 U/ml penicillin, 100 mg/ml streptomycin, and 10% FBS were cultured in 24-well plates pre-coated with 0.2 mg/ml goat anti-hamster antibody for three days. The medium was supplemented with 0.25 µg/ml hamster anti-CD3, 1 µg/ml hamster anti-CD28, and polarizing cytokines: 2 ng/ml TGF-β, 20 ng/ml IL-6, 5 µg/ml anti-IL-4, and 5 µg/ml anti-IFNγ for TH17 differentiation; 20 µg/ml IL-12 and 5 µg/ml anti-IL-4 for Th1 differentiation; 10 ng/ml IL-4 and 10 µg/ml anti-IFNγ for TH2 differentiation; or 5 ng/ml TGF-β for Treg differentiation. For analysis, cells obtained from in vitro cultures were incubated for 4–5 h with 50 ng/ml PMA (Sigma-Aldrich), 750 ng/ml ionomycin (Sigma-Aldrich), and 10 µg/ml brefeldin A (BD Biosciences) in a tissue culture incubator at 37 °C, followed by intracellular cytokine staining.
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3

Differentiation of Murine CD4+ T-cell Subsets

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Naïve CD4+ T cells were purified from C57BL/6, Rorγt−/−, Src3+/−, or Src3−/− mice by negative selection (Miltenyi Biotec). Suspensions of 4×105 cells/ml Iscove’s modified DMEM (Cellgro) containing 2 mM L-glutamine, 50 mM 2-ME, 100 U/ml penicillin, 100 mg/ml streptomycin, and 10% FBS were cultured in 24-well plates pre-coated with 0.2 mg/ml goat anti-hamster antibody for three days. The medium was supplemented with 0.25 μg/ml hamster anti-CD3, 1 μg/ml hamster anti-CD28, and polarizing cytokines: 2 ng/ml TGFβ, 20 ng/ml IL-6, 5 μg/ml anti-IL-4, and 5 μg/ml anti-IFNγ for Th17 differentiation; 20 μg/ml IL-12 and 5 μg/ml anti-IL-4 for Th1 differentiation; 10 ng/ml IL-4 and 10 μg/ml anti- IFNγ for Th2 differentiation; or 5 ng/ml TGFβ for Treg differentiation. For analysis, cells obtained from in vitro cultures were incubated for 4–5 h with 50 ng/ml PMA (Sigma-Aldrich), 750 ng/ml ionomycin (Sigma-Aldrich), and 10 μg/ml brefeldin A (BD Biosciences) in an incubator at 37°C, followed by intracellular cytokine staining.
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