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9 protocols using anti cd56

1

Isolation and Purification of PBMC Subsets

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Human PBMCs were isolated using Ficoll-Hypaque® density gradient centrifugation of heparinized venous blood from donors. The PBMCs were subjected to sequential isolation of T cells, NK cells and monocytes using anti-CD3, anti-CD56 and anti-CD14 microbeads according to manufacturer’s guidelines (Miltenyi Biotec Inc., San Diego, CA). Then the rest of the cells were further separated using a human B cell isolation kit II purchased from Miltenyi Biotec Inc. to obtain B cells and dendritic cells. In some experiments, we used antigen presenting cells (APCs, i.e. a mix of B cells, dendritic cells and monocytes) isolated from PBMCs by depletion of T cells and NK cells.
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2

Mesothelin Expression in Cancer Cell Lines

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BT-474 (ATCC HTB-20), HCC1806 (ATCC® CRL-2335™), SK-BR-3 (ATCC® HTB-30™) and MDA-MB-231 (ATCC® HTB-26™) were purchased from ATCC. Ovarian cancer cells line, A1847 and human FcγRIIIA transfected Jurkat lymphoma T cells (Jurkat-huFcγRIIIA cells) were a gift of Dr N. Scholler, (SRI International, Ca USA) and Pr. Eric Vivier (Marseille, France), respectively, and were not authenticated. NK cells were isolated from human PBMCs as previously described (21 (link)). NK cells purity and activation status were determined by flow cytometry (MACSQuant® analyser (Miltenyi Biotec) after staining with PE-conjugated anti-CD3, anti-CD56, anti-CD16, anti-CD69, and anti-CD107 (Miltenyi Biotec). Mesothelin binding capacity of tumor cell lines was quantified by DAKO QIFIKIT (DAKO Cytomation), according to manufacturer's protocol using anti-human mesothelin monoclonal antibody K1 (GTX23362, GeneTex) as primary antibody. MSLN quantity was expressed as specific antibody-binding capacity units after substracting background from isotype control.
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3

Isolation and Sorting of Monocyte Subsets

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PBMCs were obtained by Ficoll density gradient centrifugation and were then depleted of granulocytes and lymphocytes using anti-CD15, anti-CD56, anti-CD3, and anti-CD19 microbeads (Miltenyi Biotec). The enriched monocyte fraction was then labeled with anti-CD14 [61D3] (#48-0149-42; eBioscience), anti-CD16 [VEP13] (#130-098-099; Miltenyi Biotec) and anti-CD56 [NCAM16.2] (#340363; BD Biosciences), for sorting by fluorescence-activated cell sorting (FACS) into the three monocyte subsets. For FACS, we first gated on single cells and then gated on the enriched monocytes population. We then excluded the CD14CD56+ NK cells, as they also express CD16 (Supp Fig. S1). The remaining cells were gated into classical (CL; CD14high/CD16), intermediate (ITM; CD14high/CD16+) and non-classical (NC; CD14low/CD16+) subsets (Fig. 1a).
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4

Phenotypic Characterization of ADSCs

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Cultures of PF ADSCs and BC ADSCs at different passages (lower than passage 4) were phenotypically characterized following reference guidelines [32 (link), 33 (link)]. ADSCs obtained from PF- or BC-bearing patients were detached with 0.05% trypsin/EDTA (Thermo Fisher), washed with PBS, and 100000 cells were resuspended in 250 μL of PBS without Ca2+ and Mg+ (Euroclone, Pero, Italy) and incubated with antibodies directed against specific surface markers. Cells were incubated on ice for 30 minutes with antibodies anti-CD44 (BD Biosciences, San Jose, CA), anti-CD90 (Millipore, Massachusetts, USA), anti-CD34 (Miltenyi Biotec, Calderara di Reno, BO, Italy), anti-CD45 (BD Biosciences), anti-CD146 (Biocytex, USA), anti-CD31 (Miltenyi Biotec), anti-CD56 (Miltenyi Biotec), anti-CD105 (Serotec, Bio-Rad, Segrate, MI, Italy), anti-CD144 (R&D Systems, Minneapolis, MN, USA), anti-CD166 (BD Biosciences), anti-CD133/2 (Miltenyi Biotec), anti-CD73 (BD Biosciences), and anti-vascular endothelial growth factor 2 (VEGFR2; R&D Systems). Cells were pelleted, washed, and fixed in 4% paraformaldehyde (Sigma-Aldrich) for 20 minutes. Fluorescence-activated cell sorting (FACS) analysis was performed on a FACSVerse flow cytometer (BD Biosciences), equipped with the Cell Sweet software for data analysis.
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5

Comprehensive T-cell Phenotyping by Flow Cytometry

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Cellular composition, CD4/CD8 ratio and CAR-expression was determined by flow cytometric analysis after staining with one or several of the following antibodies and reagents: anti-CD45, anti-CD4, anti-CD3, anti-CD16, anti-CD56, anti-CD19, anti-CD14, anti-CD8, anti-CD45RO, anti-CD95, anti-CD62L and 7-AAD (all Miltenyi Biotec). CAR-modified T cells were identified using the EGFRt marker and staining with an anti-EGFRt antibody (clone: C225, ImClone Systems) conjugated in-house to AlexaFluor 647. Data were acquired on a MACSQuant Analyzer 10 and analyzed using MACSQuantify software (both Miltenyi Biotec).
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6

Immunophenotypic Characterization of B Cell Subsets and Recent Thymic Emigrants

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Immunophenotype was performed on heparinized peripheral blood samples obtained from each patient by means of flow cytometry. 100 μL of blood were stained with two multicolour antibody panels in order to evaluate different lymphocyte subsets, including B cell subpopulations (naïve follicular B cells, marginal zone B cells, switched memory B cells and transitional B cells) and recent thymic emigrants (RTE).
Panel for B cells analysis contained the following antibodies: anti-CD45, anti-CD19, anti-CD38 (Becton Dickinson), anti-CD27, anti-IgM, anti-IgG, anti-CD21, anti-CD10 and anti-IgD (Miltenyi Biotec).
Panel for RTE analysis contained the following antibodies: anti-CD45, anti-CD19, anti-CD4, anti-CD8 (Becton Dickinson), anti-CD3, anti-CD45RA, anti-CD31, anti-CD16 and anti-CD56 (Miltenyi Biotec).
Samples were acquired with MACSQuant Analyzer 10 (Miltenyi Biotec) and analyzed with FlowLogic software (version 7.2.1, Inivai Technologies).
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7

Monocyte Subset Isolation and Analysis

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PBMCs were depleted of granulocytes and lymphocytes using anti-CD15, anti-CD56, anti-CD3, and anti-CD19 microbeads (Miltenyi Biotec). The enriched monocyte fraction was labeled with anti-CD14, anti-CD16, and anti-CD56 for fluorescence-activated cell sorting (FACS) into the three monocyte subsets. CD14CD56+ NK cells were excluded, as they also express CD16 (Figure 2Cb). The remaining cells were gated into CL (CD14high/CD16), ITM (CD14high/CD16+), and NC (CD14low/CD16+) subsets (Figure 2Cd).
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8

Quantifying Donor Leukocyte Composition

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Flow cytometry was used to quantify the distribution of different donor leukocytes in both the graft and perfusate compartments. Isolated cells were washed and stained with Zombie viability dye (Biolegend, San Diego, CA) in phosphate‐buffered saline, treated with Human Fc Receptor Blocking Solution (Biolegend), and then stained with the following markers prior to fixing with 2% formaldehyde (Fisher Scientific): anti‐CD3 (Biolegend), anti‐CD4 (Biolegend), anti‐CD8 (Biolegend), anti‐CD14 (Biolegend), anti‐CD16 (Biolegend), anti‐CD19 (Biolegend), anti‐CD45 (Invitrogen, Waltham, MA), anti‐CD56 (Miltenyl Biotec, Bergisch Gladbach, Germany), anti‐CD66b (Biolegend) (Supplemental Table 2). Data were acquired on an Aurora spectral flow cytometer (Cytek Biosciences, Fremont, CA) and analyzed using FlowJo Software (Version 10; FlowJo LLC, Ashland, OR) (Supplemental Figure 2).
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9

Multicolor Flow Cytometry and Magnetic Sorting

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The antibodies used for flow cytometry were anti-CD16 (clone 3G8), anti-CD14 (clone 61D3) (Biolegend, San Diego, CA). The antibodies used for magnetic sorting were anti-CD16, anti-CD14, anti-CD19, anti-CD3, anti-CD56 and anti-CD15 (Miltenyi Biotec, Bergisch Gladbach, Germany). The antibodies used for Western blotting were anti-RelA/nuclear factor-jΒ (mouse monoclonal, clone 532301) (Cell Signaling, Minneapolis, MN) and anti-GAPDH (rabbit polyclonal, IgG) (Imgenex, San Diego, CA).
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