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4 protocols using pe conjugated anti igd

1

Isolation and Immunophenotyping of PBMCs

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PBMCs were isolated by centrifugation for 30min at 100g in 4°C. The whitish buffy coat between histopaque and medium was aspirated and was washed twice with 10 ml of sterile PBS. Frozen PBMC samples w thawed and were immunolabelled with following anti-human monoclonal antibodies: PerCP-conjugated anti-CD45 (Biolegend, San Diego, CA, USA), FITC-conjugated anti-CD3 (Biolegend, San Diego, CA, USA), APC-Cy7-conjugated anti-CD19 (BD Biosciences, San Jose, CA, USA), APC-conjugated anti-CD27 (Biolegend, San Diego, CA, USA) and PE-conjugated anti-IgD (BD Biosciences, San Jose, CA, USA). For memory B-cell transcriptome study using Nanostring assay, lymphocytes positive for CD19 and CD27 were sorted in 1.5 ml tubes. After 30 minutes of incubation in refrigerator at 4°C, samples were read by BD LSR Fortessa (BD Biosciences, San Jose, CA, USA).
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2

Multicolor Flow Cytometry Analysis

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Allophycocyanin-conjugated anti-CD27 and anti-IgG, PerCP-cyanin 5.5-conjugated anti-CD19, and PE-conjugated anti-IgD and their conjugated isotype controls were all from BD Biosciences. Polyvalent goat IgG FITC-anti-IgM antibodies were from The Jackson Laboratory (Mississauga, Ontario, Canada). All stainings were performed using 1 μg of each Ab for 1 × 106 cells. Cells were fixed with 2% paraformaldehyde. Isotype-matched control Ab staining was >95% double-negative cells. Regions containing dead cells were delineated using 7-amino-actinomycin D staining, following manufacturer's instructions (BD Biosciences). Analyses were done by gating ≥10,000 cells with a FACSCalibur Flow cytometer and the CellQuest Pro software (BD Biosciences). Data were subsequently analyzed with FCS Express II software (De Novo Software, Thornhill, ON, Canada).
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3

Multiparametric Flow Cytometry of Mouse B Cell Subsets

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Flow cytometry analysis of mouse NB and GCB was performed using the following fluorescent-labeled anti–mouse antibodies: APC-conjugated anti-B220 (BD Pharmingen), PE-Cy7-conjugated anti-CD95 (BD Pharmingen), FITC-conjugated anti-GL7 (BD Pharmingen) and PE-conjugated CXCR4 (eBioscience). Cell cycle analysis was performed using the BrdU Flow Kit (BD Pharmingen) and antigen-specific GCB (NP+GL7+CD95+B220+) were detected using PE-conjugated NP (biosearch Technologies, Inc.). Ex vivo stimulated B cells were stained with PE-Cy7-conjugated anti-B220 (eBioscience), PE-conjugated anti-IgD (BD Pharmingen) and APC-conjugated anti-IgG1 (BD Pharmingen). DAPI was used for the exclusion of dead cells. Data was acquired on a MACSQuant Analyzer (Miltenyi Biotec) and analyzed using FlowJo 7.6.4 software (TreeStar).
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4

Comprehensive Flow Cytometry Analysis of Murine Splenocytes

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Flow cytometry analysis of spleen cell suspensions was performed using the following fluorescent-labeled anti–mouse antibodies: APC-conjugated anti-B220 (BD Biosciences #553092), anti-CD138 (BD Biosciences #558626) and anti-IgM (eBioscience #17–5790-82); PE-conjugated anti-IgD (BD Biosciences #558597), anti-CD23 (eBioscience #5010271) and anti-CD95 (BD Biosciences #554258); PECy7-conjugated anti-CD21 (BioLegend #123420), anti-CD95 (BD Biosciences #557653), anti-GL7 (BD Biosciences # 561530) and anti-CD86 (BD Biosciences #560582); PEVio770-conjugated anti-B220 (Miltenyi Biotec #130–102-308); FITC-conjugated anti-CXCR4 (BD Biosciences #551967) and anti-IgG1 (ebioscience #11–4011-85); Brilliant Violet 421-conjugated anti-CD138 (BioLegend #142507); PerCP-Cy5.5-conjugated anti-GL7 (BioLegend #144610), anti-CD138 (BioLegend #142510) and anti-IgM (BD Biosciences #550881), APC-Cy7-conjugated anti-CD19 (ebioscience #47–0193-82), AlexaFluor647-conjugated anti-BLIMP1 (BD Biosciences #563643). Sytox blue (ThermoFisher Scientific) or DAPI was used for the exclusion of dead cells. Data was acquired on a BD FACSCanto II (BD Biosciences) and analyzed using FlowJo v10.1 software (TreeStar).
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