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16 protocols using facsdiva software package

1

CFSE-Based PBMC Proliferation Assay

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To evaluate cell proliferation, 1 × 107 PBMC in 10 ml of PBS were labeled with 5,6-carboxyfluorescein succinimidyl ester (CFSE, 0.5 μM, Invitrogen, Eugene, USA) according to the manufacturer's instructions. 2 × 106 cells/well were seeded in 6 well microtiter plates (TPP, Trasadingen, Switzerland) in 5 ml of 786-0VHL− or 786-0VHL+ conditioned media or in co-culture with 3 × 105 786-0VHL− / 786-0VHL+ cells/well in the presence of conditioned media followed by direct stimulation with plate-bound anti-CD3 and anti-CD28 antibodies (mouse anti-human, 1 μg/ml each, BD Biosciences) and maintained for 5 days in culture. 10,000 events were analyzed on a BD FACSCanto II flow cytometer in combination with the FACSDiva software package (BD Biosciences) in a time kinetic. The results were expressed as percentage of proliferating cells.
Proliferation assays in the presence of MnSOD2 were analyzed as described above in the absence and presence of 1U/ml recombinant MnSOD2 (Abnova; Pforzheim, Germany) within the culture medium for up to 40 hours.
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2

Apoptosis Induction by Salinomycin and DCA

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Cells were seeded in a 6-well plate at a density of 300,000 (HCT116) and 400,000 (DLD-1) cells per well. After 24 h, cells were treated with salinomycin, DCA, or drug combination at doses selected during the cell viability assay experiment: 0.25 μM of salinomycin, 15 mM of DCA, and the combination of two. After 48 h, cells were collected and washed by centrifugation. For apoptosis detection, we used an Annexin V-FITC apoptosis detection kit (Sigma Aldrich, USA). Cells were resuspended in 500 μL of binding buffer; subsequently, 5-μL annexin V conjugated with FITC and 5-μL propidium iodide (PI) solution (100 μg/mL) were added to the mixture, and cells were maintained at room temperature in the dark for 5 min. Cells were analyzed for apoptosis by a BD LSR II flow cytometer (BD Biosciences, USA) and an FACS Diva software package (BD Biosciences, USA).
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3

Multicolor Flow Cytometry Analysis

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Multicolor flow cytometric analysis was performed on whole blood or a cell suspension using predetermined optimal concentrations of the following fluorescently conjugated monoclonal antibodies (MAbs): CD3-APC-Cy7 (clone SP34-2), CD95-PE-Cy5 (clone DX2), Ki-67-AF700 (clone B56), HLA-DR-PerCP-Cy5.5 (clone G46-6), CCR7-FITC (clone 150503), CCR5-APC (clone 3A9), and CD45RA-PECy7 (clone L48) from BD Biosciences; CD8-BV711 (clone RPA-T8), CD4-BV650 (clone OKT4), and PD-1-BV421 (clone EH12.2H7) from BioLegend, and CD28-ECD (clone CD28-2) from Beckman Coulter. Flow cytometric acquisition and analysis of samples were performed on at least 100,000 events on an LSR II flow cytometer driven by the FACSDiva software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo version 10.0.4 software (TreeStar).
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4

Multicolor Flow Cytometry of PBMCs

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Multicolor flow cytometric analysis was performed on whole blood or frozen PBMCs using predetermined optimal concentrations of the following fluorescently conjugated mAbs: CD3-PacBlue or -APC-Cy7 (clone SP34-2), CD95-PE-Cy5 (clone DX2), Ki-67-AF700 (clone B56), HLA-DR-PerCP-Cy5.5 (clone G46-6), CCR7-PE-Cy7 (clone 3D12), CCR5-PE or -APC (clone 3A9), CD45RA-FITC (clone L48), Biotin-CD122 (clone Mik-β3) from BD Biosciences; CD8-BV711 (clone RPA-T8), CD4-APC-Cy7 or -BV650 (clone OKT4), Streptavidin-PE from Biolegend, and CD28-ECD (clone CD28-2) from Beckman-Coulter. Flow cytometric acquisition and analysis of samples was performed on at least 100,000 events on an LSRII flow cytometer driven by the FACSDiva software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo Version 10.0.4 software (TreeStar).
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5

Multicolor Flow Cytometry Analysis

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After staining for surface antigens with mAbs at 4°C for 30 minutes, cells were incubated with 0.9% ammonium chloride for 5 minutes to lyse residual red blood cells. Cells were then extensively washed with PBS – 1% BSA and were run on a FACS Canto II® flow cytometer (BD Biosciences) with standard equipment. A minimum of 50,000 events was collected and acquired in list mode using the FACS Diva® software package (BD Biosciences).
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6

Multicolor Flow Cytometry of Immune Subsets

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Multicolor flow cytometric analysis was performed on whole blood using predetermined optimal concentrations of the following fluorescently conjugated monoclonal antibodies: CD3-allophycocyanin (APC)-Cy7 (clone SP34–2), Ki-67-AF700 (clone B56), CCR7-fluorescein isothiocyanate (FITC) (clone A20), CD45RA-phycoerythrin (PE)-Cy7 (clone 5H9), and CD62L-PE (clone SK11) from BD Biosciences; CD8-Brilliant Violet 711 (BV711) (clone RPA-T8), CD4-BV650 (clone OKT4), and CD95-BV605 (clone DX2) from BioLegend; and CD28-PE-Cy5.5 (clone CD28.2) from Beckman Coulter. Flow cytometric acquisition and analysis of samples were performed on at least 100,000 events on an LSR II flow cytometer driven by the FACSDiva software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo software (version 10.0.4; Tree Star).
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7

Multiparameter Flow Cytometry Analysis

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Frozen PBMCs were thawed using R10 medium (RPMI+L-glutamine+Penicillin Streptomycin+ 10% FCS) and subsequently stained with antibodies corresponding to either the chemokine/cytokine receptor, cytolytic, or transcription factor panels (see below). FoxP3 permeabilization kit (BD Pharmingen) was used for intracellular staining. Staining of the chemokine panel was carried out at 37°C. Samples were acquired on an LSRII flow cytometer (BD Biosciences) using the FACSDiva software package (BD Biosciences). Prior to each run, all samples were fixed in 2% PFA. Samples were then analyzed using the Flowjo software package (FlowJo, LLC). Gating strategies were developed based on florescence-minus-one (FMO) controls.
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8

Multicolor Flow Cytometric Immune Profiling

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Multicolor flow cytometric analysis was performed on whole blood and lymph node mononuclear cells using predetermined optimal concentrations of the following fluorescently conjugated monoclonal antibodies: CD3-APC-Cy7 (clone SP34–2), Ki-67-AF700 (clone B56), HLA-DR-PerCP-Cy5.5 (clone G46–6), CCR5-APC (clone 3A9, CCR7-FITC (clone A20 ), CD45RA-PE-Cy7 (clone 5H9), and CD62L-PE (clone SK11) from BD Biosciences; CD8-BV711 (clone RPA-T8), CD4-BV650 (clone OKT4), CD95-BV605 (clone DX2) and PD-1-BV421 (clone EH12.2H7) from Biolegend and CD28-PE-Cy5.5 (clone CD28.2) from Beckman Coulter. Flow cytometric acquisition and analysis of samples was performed on at least 100,000 events on an LSRII flow cytometer driven by the FACSDiva™ software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo™ software (Tree Star, version 10.0.4).
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9

Dissecting SIV-Specific T-Cell Responses

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PBMCs from five ART-suppressed SIV-infected RMs were thawed. Pretreatment with AZD5582 was performed for 1 h at 100 nm. After two washes, PMA and ionomycin were added for 1 h at 500 ng/mL and 10 μg/mL, respectively. DMSO treatment controls were prepared in parallel. After 1 h, brefeldin-A (BFA) and Golgi stop solution were added following manufacturer’s recommendations (BD GolgiStop™ Protein Transport Inhibitor, BD Biosciences). Cells were incubated at 37°C, 5% CO2 in R10 for 6–8 h before staining with the following antibodies: CD3-APC-Cy7 (clone SP34–2), CD8-BV711 (clone RPA-T8), CD4-BV650 (clone OKT4), from Biolegend, IFN-γ-PE (clone B7), TNF-α-AF700 (clone Mab11) and IL-2-BV605 (clone MQ1–17H12) from BD Biosciences. Flow cytometric acquisition and analysis of samples was performed on at least 100,000 events on an LSRII flow cytometer driven by the FACSDiva software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo™ (TreeStar, version 10.0.4) and Simplified Presentation of Incredibly Complex Evaluations (SPICE, version 6.0) software.
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10

Multicolor Flow Cytometric Immune Profiling

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Multicolor flow cytometric analysis was performed on whole blood and lymph node mononuclear cells using predetermined optimal concentrations of the following fluorescently conjugated monoclonal antibodies: CD3-APC-Cy7 (clone SP34–2), Ki-67-AF700 (clone B56), HLA-DR-PerCP-Cy5.5 (clone G46–6), CCR5-APC (clone 3A9, CCR7-FITC (clone A20 ), CD45RA-PE-Cy7 (clone 5H9), and CD62L-PE (clone SK11) from BD Biosciences; CD8-BV711 (clone RPA-T8), CD4-BV650 (clone OKT4), CD95-BV605 (clone DX2) and PD-1-BV421 (clone EH12.2H7) from Biolegend and CD28-PE-Cy5.5 (clone CD28.2) from Beckman Coulter. Flow cytometric acquisition and analysis of samples was performed on at least 100,000 events on an LSRII flow cytometer driven by the FACSDiva™ software package (BD Biosciences). Analyses of the acquired data were performed using FlowJo™ software (Tree Star, version 10.0.4).
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