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5 protocols using cd33 pe wm53

1

Multiparametric Flow Cytometry Analysis of Hematopoietic Engraftment

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Sixteen to18 weeks after transplantation, samples of peripheral blood, bone marrow, and spleen were harvested from recipient mice. Samples were treated with ammonium chloride to eliminate mature erythrocytes. Non-specific antibody binding was blocked (10% vol/vol, TruStain FcX, BioLegend), cells were stained (30 min, 4 °C, dark), and analyzed by setting nucleated cell scatter gates using a BD FACSAria II flow cytometer or BD FACSCanto II analyzer (BD Biosciences). Cells were analyzed based on monoclonal anti-human HLA-ABC APC-Cy7 (W6/32, BioLegend), anti-mouse CD45.1 PE-Cy7 (A20, eBioScience, San Diego, CA, USA), CD19 APC (HIB19, BD511 Biosciences), CD33 PE (WM53, BD Biosciences), anti-mouse mTer119 PE-Cy5 (TER-119, BD Biosciences), and CD3 PerCP/Cy5.5 (HiT3A, BioLegend) antibodies, and Propidium Iodide to detect dead cells. Human engraftment was defined as HLA-ABC+/HCD45+ cells. See Supplementary Methods for a complete Antibody list.
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2

Multiparametric Flow Cytometry Analysis of Human Hematopoietic Engraftment in Mice

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Fifteen to 20 weeks after transplantation, mice were euthanized, and peripheral blood, BM, and spleen were collected. After several washes and treatment with ammonium chloride to remove erythrocytes, cells were treated with 10% vol/vol TruStain FcX (BioLegend, San Diego, CA, USA) to block non-specific antibody binding. Cells were stained in the dark for 30 min on ice using the following antibodies: anti-human HLA-ABC APC-Cy7 (W6/32, BioLegend), anti-mouse CD45.1 PE-Cy7 (A20, eBioScience, San Diego, CA, USA), anti-human CD45 PB (2D1, Biolegend), CD19 APC (HIB19, BD511 Biosciences), CD33 PE (WM53, BD Biosciences), anti-mouse/human TER-r119 PE-Cy5 (TER-119, BD Biosciences), and CD3 BV650 (HiT3A, BioLegend). After staining, cells were washed and resuspended in MACS buffer containing propidium iodide to detect dead cells. Samples were analyzed in a BD FACSAria II flow cytometer, and human engraftment was given by double-positive human HLA-ABC+/human CD45+ cells.
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3

Evaluating Human Engraftment in Mice

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12 weeks after transplantation, mice were sacrificed, mouse bone marrow (BM) was harvested from the transplanted femur by flushing. Non-specific antibody binding was blocked (10% vol/vol, TruStain FcX, BioLegend) and cells were stained (30 min, 4°C, dark) with monoclonal anti-human HLA-ABC APC-Cy7 (W6/32, BioLegend), anti-mouse CD45.1 PE-Cy7 (A20, eBioScience, San Diego, CA, USA), CD19 APC (HIB19, BD511 Biosciences), CD33 PE (WM53, BD Biosciences), and anti-mouse mTer119 PE-Cy5 (TER-119, BD Biosciences) antibodies, and Propidium Iodide to detect dead cells. Human engraftment was defined as HLA-ABC+ cells.
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Flow Cytometry Phenotyping of AML and Healthy PBMCs

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AML and healthy PBMC samples were phenotyped with CD45-V500 (HI30), CD34-PE-CY7 (581), CD38-V450 (HB7) and CD33-PE (WM53), CD90-AF700 (5E10), CD45RA-APC-H7 (SH9), CD11c-APC-AF700 (B-Ly6) and HLA-DR-APC-H7 (L243) mAbs from BD Biosciences or BioLegend. The lineage (Lin) cocktail consisted of CD235a (GA-R2), CD14 (MφP9), CD20 (2H7), CD19 (HIB19), CD56 (NCAM16.2) and CD3 (SK7; BD Biosciences). The mouse anti-human CD302 IgG1mAb antibody (MMRI-20) was used unlabelled or as a PE conjugate [11 (link)]. The mAb CMRF-81, specific for tetanus toxoid, was used as the mouse IgG1 isotype control [14 (link)]. DAPI (3μM; ThermoFisher) staining was used to exclude dead cells. Data were collected on Accuri C6, Canto, Fortessa LSR or Influx flow cytometers (BD Biosciences) and analysed with FlowJo 10 software (Treestar). The gating strategy for identifying BM/CB HSC and MPP are shown in panel A of S1 Fig. Binding was displayed as a geometric mean fluorescence intensity (geoMFI) ratio which was calculated by the formula: geoMFI test antibody/geoMFI isotype control. A ratio of ≥3 was considered positive. T-distributed stochastic neighbour embedding (t-SNE) visualisation was performed on FlowJo 10.
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5

Comprehensive Immune Cell Analysis in Mice

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Mice were sacrificed after 14 weeks, and injected femur, and uninjected femur and tibiae were collected. Single cell suspension was prepared using standard flushing and cell dissociation techniques in 1 ml of IMDM. From that suspension, 100 μl of injected femur, 50 μl uninjected marrow (~1×106 cells) were stained in a total volume of 200 μl staining buffer. Samples were not lysed with red blood cell lysis buffer as not to lyse human erythrocytes. Samples were stained with the 1:75 dilution the following antibodies: SytoxGreen live-dead stain (Thermo), CD33-PE (WM53; BD), CD45-APC (P67.6; BD), CD235a (11E4B-7–6; Coulter), CD19-BV605 (SJ25C1; BD), CD3-BV786 (SK7; BD), and CD66b-BV421 (G10F5; BD). All antibodies were confirmed as human-specific. Uninjected mouse marrow was used as a control for non-specific staining; CB mononuclear cells were used as a positive control. Compensation was performed using automated compensation with anti-mouse Igk and negative beads (BD Biosciences).
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