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72 protocols using f4 80 apc

1

Multiparameter Flow Cytometry Analysis

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Cell suspensions were treated with anti CD16/CD32 (2.4G2) and then surface stained with combinations of the following fluorochrome-conjugated antibodies: From Biolegend: CD3e–FITC (clone: 145 2C11), Ly6C–FITC or APC/Cy7 (clone: HK1.4), Ly6G–PE/Cy7 (clone: 1A8), CD3e–APC/Cy7 (clone: 145 2C11), CD45R/B220–Pacific Blue (clone: RA3 6B2), CCR2-AlexaFluor647 (clone: SA203G11), CX3CR1-APC (clone: SA011F11), IgG2A,κ-APC isotype control; from BD Biosciences: NK1.1–PerCP/Cy5.5 (clone: PK136); from Ebiosciences: F4/80–APC (clone: BM8), CD4 (L3T4)–FITC (clone: RM4 5), CD11b–FITC (clone: M1/70), CD11b–PE (clone: M1/70), CD4–APC (clone: GK1.5). Cells were acquired on FACSCanto or AriaIII flow cytometers using FACSDiVa software, and data were analyzed using FlowJo software (Tree Star).
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2

Phenotyping Extracellular Vesicles by Flow

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Cellular source of EVs was determined by flow cytometry using CD9 Exo-Flow capture beads (System Biosciences; Palo Alto, CA, USA) as per manufacturers' instructions. EVs were attached to CD9 labeled Exo-Flow beads at 4°C, for 16 h, and stained with F4/80-APC, CD31-FITC, CD326-PE, and Ly6G-BV421 (eBioscience) antibodies, and analyzed on BD LSR Fortessa Flow Cytometer at OSU Flow cytometry core facility. Data were analyzed using FlowJo.
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3

Tumor Immune Cell Isolation and Characterization

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The tumors were weighed, minced into small fragments, and digested at 37°C in 10 ml of digestion solution [PBS supplemented with type I Collagenase (200 U/ml), Hyaluronidase, and DNase I (100 μg/ml)] for 60 min. Single-cell suspensions were obtained by grinding the digested tissues and filtering them through a 70-μm cell strainer (BD Biosciences). The immune cells were isolated using Ficoll density gradient centrifugation. Freshly isolated immune cells were stained with antibodies for 30 min at 4°C. The following monoclonal anti-mouse antibodies were used: CD45-PECy5.5 (eBioscience), CD3-pecy7 (eBioscience), CD8-APC (eBioscience), NK1.1-APC (eBioscience), F4/80-APC (eBioscience), CD11b-pecy7 (eBioscience), CD11c-APC (eBioscience), and MHCII-PE (eBioscience). Flow cytometry was performed on a FACS Canto II flow cytometer (BD Biosciences), and the data were analyzed using FlowJo software (TreeStar, Ashland, OR).
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4

Macrophage Surface Marker and Intracellular Cytokine Analysis

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For analysis of cell surface markers, the cells were stained with anti-CD86-FITC or anti-CD86-PE, anti-MHC class II-PE-Cy5 (all from BD Biosciences), and F4/80-FITC (Biolegend) or F4/80-APC (eBioscience). Transfection plasmids and siRNA had fluorescent reporters (GFP for plasmid and Cy3-labeled RNA for siRNA), which were used to gate on transfected cells. Macrophages were analyzed for expression of surface markers (MHC class II, CD86, F4/80) or intracellular markers (Egr2, IL-6, TNF). FcRs were blocked with mAb specific for mouse FcR (2.4G2; BD Biosciences). Intracellular staining for Egr2, IL-6 or TNF was performed similarly as described earlier (32 (link), 33 (link)) using fixation/permeabilization agent (eBioscience) and anti-Egr2-APC (eBioscience), anti-IL-6-PE, or anti-TNF-PE mAbs (both from BD Biosciences). The cells were analyzed using LSRFortressaTM cytometer (BD Biosciences) and FlowJo software (Tree Star Inc.) as we described earlier (34 (link)).
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5

Flow Cytometry Analysis of Immune Cell Subsets

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Skin samples were prepared as described previously [15 (link)], and flow cytometry was performed as described previously [16 (link)]. In brief, single-cell suspensions (1 million cells) were first incubated with Fc Block (BD Pharmingen, San Diego, CA) for 10 minutes, then coincubated with antibodies for 20 minutes at 4 °C, followed by washing with staining buffer (PBS + 1% FBS). Flow cytometry analysis was performed with an LSRFortessa cell analyzer (BD Biosciences, San Jose. CA), and data were analyzed using Flowjo software (Flowjo, Ashland, OR). CD19-FITC (BD Pharmingen), CD229.1-PE (BD Pharmingen), CD4-PE-Cy7 (eBioscience, San Diego, CA), CD25-APC-Cy7 (BD Biosciences), CD45-PB (BioLegend San Diego, CA), CD8α-AF700 (BioLegend), B220-PE (BD Biosciences), CD138-PE (BioLegend). CD11c-FITC (BioLegend). F4/80-APC (eBioscience), and CD11 b-APC-Cy7 (BioLegend) were used for these studies.
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6

Multiparametric Analysis of Liver-Derived Immune Cells

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A nonparenchymal cell fraction from whole liver extracts was isolated upon collagenase and mechanical digestion followed by Percoll (GE Healthcare Life Sciences) gradient centrifugation as previously described [5 (link)]. In parallel, blood samples were collected in EDTA-containing tubes and treated with red blood cell lysis buffer (PharmLyse, BD Biosciences, Germany). Upon removal of red bodies and centrifugation, immune cells were incubated with fluorochrome-conjugated antibodies and characterized according to two different panels, a myeloid panel: CD45-BV510 (103138, BioLegend), 7AAD-PE-Cy5-YG (420404, BioLegend), CD11b-BV711 (101242, BioLegend), F4/80-APC (17-4801-82, eBiosciences), MHC2-Alexa700 (107622, BioLegend), CD11c-PE-Cy7 (25-0114-81, eBiosciences), and Ly6G-FITC (551460, BD Pharmingen) and a lymphoid panel: CD45-BV510 (103138, BioLegend), 7AAD-PE-Cy5-YG (420404, BioLegend), CD3-PE-Cy7 (25-0031-82, eBiosciences), CD4-FITC (11-0041-85, eBiosciences), CD8-PerCpCy5.5 (126610, BioLegend), and NK1.1-BV711 (108745, BioLegend). Labeled cells were then subjected to flow cytometry using a BD Canto II (BD Biosciences) and relative cell numbers were analyzed using FlowJo software (Tree Star).
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7

Flow Cytometry Analysis of Immune Cells

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Stained cells were analyzed using a BD LSR II-SORP system (Becton Dickinson) and analyzed with FlowJo software (Tree Star). The following mAbs were used: CD45-PerCPCy5, CD45-APC, CD8-APC, anti-IFNγ-PECy7 and anti-IL-4-FITC (BD Biosciences), Gr1-APC, CD11c-PECy7, CD11b-PB, F4/80-APC (eBiosciences), 1A8-APCCy7, Ly6C-FITC, 1A8-APCCy7, CD4-AF700. DAPI and AnV-FITC (BioLegends). In vivo bioluminescence imaging of MPO activity was quantified through injection of 200mg/kg luminol (Carbosynth) i.p. 10 minutes before luminescence acquisition. Photon emission was acquired for 10 minutes using a Xenogen IVIS Imaging system.
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8

Flow Cytometric Analysis of Cell Surface and Intracellular Markers

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For detection of surface markers and intracellular proteins, cells were harvested after trypsin treatment and resuspended in PBS supplemented with 2% FCS. Cells were pretreated with CD16/CD32 Fc-Block (eBioscience) for 20 min at 4°C. The following antibodies were used in concentrations according to instructions: SSEA-1-APC (51-8813-71), CD41-APC (17-0411-82), F4/80-APC (17-4801-80), CD11b-PE/eFluor 450 (12-0112-82/48-0112), CD14-FITC (11-0141-81), CD11c-PE-Cy7 (11-0141-81), Gr-1-eFluor450 (48-5931-82), CD45.1-PE-Cy7/APC (25-0453-81/17-0453), CD45.2-PE (12-0454-81), CD3-FITC (11-0031-81), B220-eFluor450 (48-0452-82), CD45-PE-Cy7/eFluor450 (25-0451-82/48-0451), CD200R-APC (17-5201), CD68-PE-Cy7 (25-0681) (all from eBioscience), SIGLEC-F-PE (552126, Becton Dickinson), Phospho-STAT5 (Tyr694) (C71E5) rabbit mAb (Alexa Fluor 647 conjugate) (9365, Cell Signaling), or Anti-Human/Mouse phospho-STAT5 (Y694) APC (17-9010, eBioscience). Fluorescence was measured using a BD FACSCalibur or BD LSR II and Fc-Block treated unstained sample was used as negative control.
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9

Hematopoietic Progenitor Cell Profiling

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Cell populations were identified and sorted on day 2 of blast culture based on surface markers. For experiments including hemogenic endothelium (HE) the floating and adherent cells were pooled. These cells were stained with KIT-APC (BD pharmingen), Tie2-PE (eBioscience) and CD41-PE-Cy7 (eBioscience) and analyzed on a Cyan ADP flow cytometer (Beckman Coulter) with data analysis using FlowJo, or sorted on a fluorescence associated cell sorting (FACS) Aria cell sorter (BD Biosciences). Progenitors matured in liquid culture were stained with CD11b-PE (eBioscience) and F4/80-APC (eBioscience).
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10

Multicolor Flow Cytometry of Myeloid Cells

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CD45 APC‐Cy7 (1:100, BioLegend, clone 30‐F11), MHC‐II PE (1:1,000, BioLegend, clone M5), CD11b PE‐Cy7 (1:100, BioLegend, clone M1/70), F4/80 APC (1:50, eBioscience, clone BM8), Ly6G PE (1:50, BioLegend), and 7AAD PerCP (2.5 μl/sample, Sigma).
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