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4 protocols using pan t cells

1

Cell culture and T cell activation

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HEK293T cells (human embryonic kidney cells expressing SV40 large T antigen, negative for mycoplasma, originally obtained from the American Type Culture Collection) and skin fibroblast cells derived from TNFAIP3-deficient patients or normal donors were grown in Dulbecco’s modified Eagle’s medium (Life Technologies) plus 10% fetal calf serum and 1x antibiotics (Life Technologies). Jurkat-T (human leukaemic T lymphoma cell line, negative for mycoplasma, originally obtained from the American Type Culture Collection) cells and human PBMCs were grown in RPMI1640 medium (Life Technologies), plus 10% fetal calf serum (Gemini Bio-Products) and antibiotics. For intracellular TNF staining, pan-T cells purified from PBMCs by negative selection (Miltenyi) were cultured in complete RPMI 1640 in the presence of plate-bound anti-CD3 and soluble anti-CD28 (both 1 μg/mL) for 5 days. For IL-9 staining, rhIL-4 (30 ng/mL), TGF-β (5 ng/mL), IL-1β (10 ng/ml), and IL-2 (10 U/ml), together with anti-IFNγ (10 μg/mL) were added to total PBMCs, and cells were cultured for 48 hours under the same conditions.
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2

In Vitro T-Cell Cytotoxicity Assay

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Target cells were plated at a density of 0.1 × 106 to 0.2 × 106 in RPMI-1640 + 10% FBS + 1% P/S, and frozen PBMCs (STEMCELL Technologies) were thawed, washed, and rested overnight. After 24 hours, pan T-cells were isolated (Miltenyi Biotec). pan T-cells were added to tumor cells at the E:T ratios indicated along with diluted antibody. After 48 hours, an aliquot of supernatant was removed, frozen, and subsequently analyzed for IL-2 and IFNγ release (MSD U-plex platform). Cytotoxicity was measured using Cell Proliferation Reagent WST-1 (Sigma) or CytoTox 96 LDH substrate (Promega). Percentage of cell lysis was calculated as previously described.25 (link)
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3

Cell culture and T cell activation

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HEK293T cells (human embryonic kidney cells expressing SV40 large T antigen, negative for mycoplasma, originally obtained from the American Type Culture Collection) and skin fibroblast cells derived from TNFAIP3-deficient patients or normal donors were grown in Dulbecco’s modified Eagle’s medium (Life Technologies) plus 10% fetal calf serum and 1x antibiotics (Life Technologies). Jurkat-T (human leukaemic T lymphoma cell line, negative for mycoplasma, originally obtained from the American Type Culture Collection) cells and human PBMCs were grown in RPMI1640 medium (Life Technologies), plus 10% fetal calf serum (Gemini Bio-Products) and antibiotics. For intracellular TNF staining, pan-T cells purified from PBMCs by negative selection (Miltenyi) were cultured in complete RPMI 1640 in the presence of plate-bound anti-CD3 and soluble anti-CD28 (both 1 μg/mL) for 5 days. For IL-9 staining, rhIL-4 (30 ng/mL), TGF-β (5 ng/mL), IL-1β (10 ng/ml), and IL-2 (10 U/ml), together with anti-IFNγ (10 μg/mL) were added to total PBMCs, and cells were cultured for 48 hours under the same conditions.
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4

T Cell Activation Methods for Assays

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Pan-T cells were purchased from AllCells. T cells that were not stimulated prior to use in assays are referred to as resting T cells. Activated T cells were generated by two methods: (1) for in vivo studies, activated T cells were generated using beads coated with anti-CD2, -CD28 and -CD3 antibodies for 3–7 days following the manufacturer’s instructions (Miltenyi Biotec T cell activation/expansion kit); (2) for in vitro assays, BiTE®-activated T cells were generated in bulk by culturing Pan-T cells with NUGC4 cells (10:1) and 100 pM EGFR BiTE® for 24 hours prior to use in assays. T cells were washed with fresh media before using in assays. Activation was confirmed using anti-CD25 and anti-CD69 antibodies (BD).
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