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8 protocols using anti cd95 pe

1

Flow Cytometric Immunophenotyping of Murine Immune Cells

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Bone marrow cells, splenocytes, and peritoneal wash cells were depleted of red blood cells and stained with various combinations of the following antibodies. Bone marrow: anti-CD43 FITC (BD Biosciences), anti-IgM PE (BD Biosciences), anti-B220 PerCP-Cy5.5 (Tonbo Biosciences), and anti-CD93 APC (Invitrogen). Spleen: anti-CD21 FITC (BD Biosciences), anti-CD23 PE (BD Biosciences), anti-CD95 PE (BD Biosciences), anti-IgM PErCP-Cy5.5 (BD Biosciences), B220 PerCP-Cy5.5, anti-B220 APC (Tonbo Biosciences), or anti-GL7 APC (BD Biosciences). Peritoneal wash: anti-CD11b FITC (BD Biosciences), anti-CD5 PE (Tonbo Biosciences), anti-IgM PErCP-Cy5.5, anti-B220 APC. Cultured B cells were stained with anti-CD138 PE (BD Biosciences), anti-B220 PerCP-Cy5.5, and anti-IgG1 biotin (BD Biosciences) plus streptavidin APC (Tonbo Biosciences). Samples were run on a FACS Calibur (BD) and analyzed with Flowjo (Treestar).
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2

Splenic Immune Profiling in Infected Mice

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The spleens of mice were collected at various time points post-infection, as detailed in figure legends. Splenic cells were passed through a 70 mm cell strainer (Fisher Scientific), centrifuged, and then treated with Ammonium-Chloride-Potassium (ACK) red blood cell lysing buffer (Gibco). Following washes, 4 x 106 total spleen cells were incubated with anti-mouse CD16/CD32 (Fc Block, BD Biosciences; Mississauga, ON, Canada) for 15 min on ice according to manufacturer’s instructions. Afterwards, surface staining with the following antibodies: anti-CD95PE, anti-CD86biotin, anti-CD19PE-Cy7, anti-GL-7AF647 and anti-CD184BV421 (all BD Biosciences) was performed for 30 min on ice. Following washing, cells were incubated with Brilliant Stain Buffer (BD Biosciences) and stained with StreptavidineBV605 (BD Biosciences) for 10 min on ice. Cells were then washed and immediately analyzed on a BD FACSaria Fusion. The data collected was analyzed on FlowJo version 10. All antibodies used are listed in S1 Table.
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3

Quantifying GC B cells and Tfh cells

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To quantify germinal center (GC) B cells and follicular helper T-cells (Tfh) we stained isolated draining lymph node cells with anti-CD4 pacific blue, anti-B220 PercP, anti-PD-1 PE, anti-CXCR5 biotin, anti-CD95 PE, anti-GL7 FITC and streptavidin APC (all from BD Biosciences). One million events in a live lymphocyte gate were acquired on a FACSCanto flow cytometer (BD Biosciences) and then analyzed using FlowJo software (version 10, Tree Star). Germinal center B cells were identified as CD4-B220+GL7+CD95+ and Tfh as CD4+B220-PD1+CXCR5+ population. S1 Fig shows the gating strategy used to identify each cell population.
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4

Multiparametric Flow Cytometry Analysis of B Cell Subsets

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Spleen cell suspensions or cultured B-cells were stained with the following antibodies as described:25 (link),46 (link) anti-CD138-PE (clone: 281-2); anti-CD95-PE (clone: Jo2); IgM-APC (clone II/41); anti-IgD-PE (clone 11-26c.2a); and anti-CD23-PE (clone B3B4) (all BD Pharmingen); and anti-B220-PerCP (clone: RA3-6B2); anti-CD21-APC (clone: 7E9); anti-CD24 (HSA)-PE (clone: 30-F1), anti-CD93-PE (clone: AA4.1); and anti-CD23-Pacific Blue (clone: B3B4) (all Biolegend); and anti-CD19-CF594 (clone: 1D3) (BD Horizon); and PNA-Biotin (Vector Laboratories) followed by Streptavidin-APC (BD Pharmingen). Annexin V/7-AAD stainings were performed using the APC Annexin V Apoptosis Detection Kit with 7-AAD (Biolegend). For DNA content analysis, cells were lysed and stained with propidium iodide (PI). The cells were analyzed on a FACSCalibur or a LSRII (Becton Dickinson). Transitional B-cells were identified by gating on B220+CD93+ lymphocytes.39 (link) GC B-cells were identified by gating on B220+ lymphocytes. eGFP+ and eGFP CD138hi plasma cells were identified through the lymphocyte gate. Data were analyzed using FlowJo software.
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5

Multiparametric Flow Cytometry Analysis of B Cell Subsets

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Spleen cell suspensions or cultured B-cells were stained with the following antibodies as described:25 (link),46 (link) anti-CD138-PE (clone: 281-2); anti-CD95-PE (clone: Jo2); IgM-APC (clone II/41); anti-IgD-PE (clone 11-26c.2a); and anti-CD23-PE (clone B3B4) (all BD Pharmingen); and anti-B220-PerCP (clone: RA3-6B2); anti-CD21-APC (clone: 7E9); anti-CD24 (HSA)-PE (clone: 30-F1), anti-CD93-PE (clone: AA4.1); and anti-CD23-Pacific Blue (clone: B3B4) (all Biolegend); and anti-CD19-CF594 (clone: 1D3) (BD Horizon); and PNA-Biotin (Vector Laboratories) followed by Streptavidin-APC (BD Pharmingen). Annexin V/7-AAD stainings were performed using the APC Annexin V Apoptosis Detection Kit with 7-AAD (Biolegend). For DNA content analysis, cells were lysed and stained with propidium iodide (PI). The cells were analyzed on a FACSCalibur or a LSRII (Becton Dickinson). Transitional B-cells were identified by gating on B220+CD93+ lymphocytes.39 (link) GC B-cells were identified by gating on B220+ lymphocytes. eGFP+ and eGFP CD138hi plasma cells were identified through the lymphocyte gate. Data were analyzed using FlowJo software.
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6

Multiparametric Flow Cytometry for Immune Profiling

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The following fluorochrome-conjugated monoclonal antibodies (mAbs) were purchased from commercial vendors and used for surface staining: anti-CD4-V500, anti-CD8-APC-H7, anti-CD45RA-PE-Cy7, anti-CD45RO-APC, anti-CCR7-AF700, anti-CD95-PE, anti-CD160-FITC, anti-CD244-FITC, and anti-PD-1-FITC (BD Biosciences, San Jose, CA); anti-CD3-BV605 (Biolegend, San Diego, CA); anti-CD14-Pacific Blue and anti-CD19-Pacific Blue (Life Technologies, Carlsbad, CA); and anti-CD27-PC5 (Beckman Coulter, Indianapolis, IN). The fixable violet amine reactive dye (ViViD; Invitrogen/Molecular Probes, Eugene, OR) was used to eliminate dead cells by flow cytometry. For intracellular cytokine staining, the following mAbs were used: anti-granzyme B (GZMB)-FITC, anti-IL-2-FITC, and anti-IFN-γ-FITC (BD Biosciences).
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7

Multiparametric Flow Cytometry Analysis

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The following fluorochrome-conjugated monoclonal antibodies (mAbs) were purchased from commercial vendors and used for surface staining: anti-CD4-V500, anti-CD8-APC-H7, anti-CD45RA-PE-Cy7, anti-CD45RO-APC, anti-CCR7-AF700, anti-CD95-PE, anti-PD-1-FITC and anti-CD69-FITC (BD Biosciences, San Jose, CA); anti-CD3-BV605 (Biolegend, San Diego, CA); anti-CD14-Pacific Blue and anti-CD19-Pacific Blue (Life Technologies, Carlsbad, CA); anti-CD30 Ligand /TNFSF8-AF488 and anti- A20/TNFAIP3- AF488 (Novus Biologicals, Littleton, CO) and anti-CD27-PC5 (Beckman Coulter, Indianapolis, IN). The fixable violet amine reactive dye (ViViD; Invitrogen/Molecular Probes, Eugene, OR) was used to eliminate dead cells by flow cytometry.
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8

Multicolor Flow Cytometry Analysis

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CRC lines, cells separated from human CRC tissue fragments, DCs and effector leukocytes (mentioned in previous paragraphs) were stained with the following cocktail of monoclonal antibodies purchased from BD Biosciences, USA: anti-CD29-APC (clone MAR4, IgG1κ), anti-CD44-FITC (clone C26, IgG2bκ), anti-CD95-PE (clone DX2, C3H/Bi IgG1κ), anti-FasL Biotin (clone NOK-1, IgG1) coupled with Streptavidin-APC, anti-CD3-PE (clone UCHT1, IgG1κ), anti-CD4-FITC (clone PA-T4, IgG1κ), anti-CD11c-APC (clone S-HCL-3, IgG2b),anti-CD14-PerCP (clone MøP9, IgG2b), anti-CD25-PE (clone M-A251, IgG1κ), anti-CD56 (clone B159, IgG1κ), anti-CD80-PE (clone L307, IgG1κ), anti-CD83-APC (clone HB15e, IgG1κ), anti-HLA-DR-PerCP (clone L243, IgG2a). Anti-CD133/2-PE (clone 293C3, IgG2bκ) monoclonal antibodies were purchased from MiltenyiBiotec. After 30 min incubation in the dark, samples were fixed with 1% PFA or PBS + 1 mM EDTA for adherent or spherical cells, respectively, and prepared for further analysis. Flow cytometric analysis was performed using FACS Calibur flow cytometer (BD Biosciences, USA) with BD CellQuest Pro Software.
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