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2 protocols using tnf pecy7

1

TNF Release Assay in γδ T-Cells

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For TNF release assays γδ T-cells were cultured with tumour cells as previously described for cytotoxicity assay. Cells were cultured for 15 minutes before the addition of 10µM TAPI-0 (TNF-α protease inhibitor 0; Biotechne) and TNF-PECy7 (MAb11; Biolegend). Cells were cultured for 4 hours before being harvested and stained for flow cytometry.
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2

Multiparameter Flow Cytometry Assay

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Peripheral blood was processed using High Yield Lysis buffer (Thermofisher) and stained with biotinylated CD16/CD32 (2.4G2, BD Biosciences), biotinylated isotype control (IgG2b κ isotype, BD Biosciences), and CD4-PacBlue, CD8- BV785, CD19-BV510, CD44- APC-Cy7, CD62L- PE-Cy7,Thy1.1- PerCP, CD45.1- BV605, CD45.2- PE-Dazzle, and streptavidin-APC (all from Biolegend). For intracellular cytokine staining, splenocytes were ex vivo stimulated at 37⁰C with 30nm OVA257–264 (SIINFEKL) peptide and 10ug/mL GolgiPlug (BD Biosciences). After 4 hours, cells were processed and stained using an intracellular cytokine staining kit (BD Biosciences) with TNF- PE-Cy7 and IFNγ- Alexafluor700 (all from Biolegend). Flow cytometry samples were acquired on an LSR II flow cytometer (BD Biosciences) and data were analyzed using FlowJo (Tree Star, San Carlos, CA) and Prism (GraphPad Software). Absolute cell numbers were calculated using CountBright Beads (Life Technologies) according to manufacturer’s instructions.
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