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3 protocols using cd45ra percp cy5.5 hi100

1

Multiparameter Flow Cytometry of Hematopoietic Cells

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Single cell suspensions obtained from colony forming assays or hematopoietic organs from mice were surface stained with monoclonal antibodies. Antibodies used for analysis of human immature stem and progenitor cells from colony forming assays: CD34 PE-Cy7(581), CD38 APC (HIT2), CD10 PE/PeCy5/APC (HI10a), CD45RA PerCP-Cy5.5 (HI100), CD90 APC-Cy7 (5E10) (Biolegend). Antibodies for erythroid cells from colony assays and HEMA: CD117 PE-Cy7 (104D2), CD71 APC/APC-Cy7 (CY1G4) (Biolegend), CD235a BV421 (HIR2) (BD biosciences). Antibodies for myeloid cells from colony forming assays: CD34 PE-Cy7 (581), CD33 PE/PerCP-Cy5.5 (WM53), CD14 APC (M5E2), CD115 BV421 (g-4D2-1E4), CD15 PeCy5 (W6D3), CD66b PerCP-Cy5.5 (G10F5) (Biolegend). Antibodies for megakaryocyte populations: CD41 PerCP-Cy5.5 (HIP8), CD61 APC (VI-PL2) (Biolegend). Antibodies for overall human and human myeloid cells in xenograft assay: CD45 Biotin (HI30), CD34 PE-Cy7/APC-Cy7 (581), CD33 PE/PerCP-Cy5.5 (WM53), CD15 PeCy5 (W6D3). Antibodies for human B cells in xenograft assay: CD19 PE-Cy7 (HIB19), IgM APC-Cy7 (MHM-88), CD10 APC (HI10a) (Biolegend). Antibody to detect murine cells in xenograft assay: CD45 PE-Cy7/PerCP-Cy5.5 (30-F11) (Biolegend). Streptavidin APC/V450 (Biolegend) were used as secondary antibodies. BD LSRFortessa was used for flow cytometry. Analyses were performed using FlowJo.
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2

Comprehensive Vδ2 T Cell Profiling

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On day 14 of expansion, Vδ2 T cells were collected and washed in PBS and stained with Aqua viability dye (ThermoFisher). Next, cells were surface stained for the following antibodies: CD26 FITC (BA5b, Biolegend), CD45RA PerCpCy5.5 (HI100; Biolegend), CD160 Alexa Fluor 647 (BY55; BD Biosciences), TIGIT APC Fire 750 (A15153G; Biolegend), PD‐1 BV421 (EH12.2H7; Biolegend), NKG2D BV650 (1D11; BD Biosciences), CD27 BV786 (L128; BD Biosciences), CD94 BUV395 (HP‐3D9; BD Biosciences), Tim‐3 BUV737 (7D3; BD Biosciences), CD3 BUV805 (SK7; BD Biosciences), Vδ2 PE (B6; Biolegend) and 2B4 PE‐Dazzle (C1.7; Biolegend). After surface staining, cells were washed and resuspended in PBS containing 2% FCS before acquisition on a BD LSR Fortessa using BD FACS Diva.
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3

SARS-CoV-2 Spike Protein Peptide Stimulation

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Cryopreserved PBMC were thawed and rested for 4 hours in RPMI-1640 supplemented with 10% FCS and penicillin-streptomycin (RF10). 2x10 6 PBMC were seeded per well in a 96-well U bottom plate and stimulated with 1ug/mL of a peptide pool covering the spike protein (PepTivator SARS-CoV-2 Prot_S Complete) or an equivalent volume of vehicle control (sterile H2O). After 1 hour, Brefeldin A (Golgi Plug, BD Biosciences) was added to the cell culture. PBMC were cultured for a total of 16 hours before being washed with PBS. Cells were stained with live/dead (Invitrogen) for 3 minutes at room temperature and then incubated with the surface antibody cocktail for 30min at 4C. The surface antibody cocktail included: CD20 BV510, 2H7; CD3 BUV395, SK7; CD27 BUV737, L128; CXCR5 BB515, RF8B2 (all from BD Biosciences); CD4 BV605, RPA-T4; CD8 BV650, RPA-T8; and CD45RA PerCP-Cy5.5, HI100 (all from BioLegend). After fixation and permeabilization (BD CytoFix/CytoPerm) for 20 minutes at 4C, cells were incubated with the intracellular antibody cocktail (IFNg APC, B27; TNF BV421, Mab11; IL-2 PE, MQ1-17H12; all from BioLegend). Cells were washed in Perm/Wash buffer, resuspended in PBS+1%FCS, and acquired on a BD LSR Fortessa.
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