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2 protocols using anti interferon ifn γ fitc

1

Multiparameter Flow Cytometry Analysis

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The following anti-human monoclonal antibodies were used for surface phenotype and intracellular cytokine staining: anti-CD4-fluorescein isothiocyanate (FITC); anti-CD4-phycoerythrin (PE); anti-CD161-PE; anti-CCR6-PE; anti-CD45RO-PE; anti-CD147-peridinin chlorophylla protein cyanine 5.5 dies (Percp–cy5.5); anti-interferon (IFN)-γ-FITC (all from BD Biosciences); and anti-IL-17A-allophycocyanin (APC; eBiosciences). Anti-mouse monoclonal antibodies included: anti-CD4-Percp; anti-IL-17A-APC; and anti-IFN-γ-FITC (all from BD Biosciences). Appropriately conjugated IgG antibodies were used as isotype controls. Cells were acquired on a FACSCalibur flow cytometer (BD Biosciences) and analyzed using Cell Quest software (BD Bioscience) and FlowJo 7.6.1 software (Tree Star).
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2

Gemcitabine-Modulated NK Cell Activation

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HPC-NK cells were stimulated for 4 h with K562 or SKOV-3 cells that were 48 h pre-treated with/without 8.8 nM gemcitabine at an effector-to-target (E:T) ratio of 1.5:1 in the presence of CD107a-PE-Cy7 (Biolegend, 328618), and brefeldin A (added after 1 h, BD Biosciences, 555029). Optionally, anti-DNAX Accessory Molecule-1 (DNAM-1) (mouse IgG1, Biolegend, 338302), and/or anti-NKG2D (mouse IgG1, Biolegend, 320813) blocking antibodies or isotype control (mouse IgG1, BioXcell, BE0083) were added at 10 μg/ml. After 4 h, surface staining was performed using CD56-BV510 (Biolegend, 318340), and intracellular staining using anti-interferon (IFN)γ-FITC (BD Biosciences, 554700) and anti-perforin-PE (Biolegend, 308106) using a fixation/permeabilization kit (eBioscience, 00–5521-00) and permeabilization buffer (eBioscience, 00–8333) following manufacturer’s instructions. Dead cells were excluded using fixable viability dye eFluor780 (eBioscience, 65–0865-14) staining. Unstimulated cells were used for gating on CD107a and IFNγ positive cells.
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