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6 protocols using anti f4 80 efluor450

1

Comprehensive Immune Cell Phenotyping

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Cells were incubated on ice for 45 min in Fc block in the presence of relevant primary antibodies. The anti-CD11c FITC, anti-CD11b PE, anti-CD103 PECy5, anti-MHCII APC-efluor780, anti-F4/80 efluor450, anti-CD45 BV510, anti-CX3CR1 PECy7, anti-Sca1 PE, anti-CD16/32 PerCP, anti-CD34 efluor450, anti-B220 FITC, anti-Gr1 FITC, anti-Ter119 FITC, anti-CD3 FITC, and anti-CD127 APC were purchased from eBioscience. The anti-CD11b PE, anti-CD11c APC, anti-Ly6C FITC, anti-CD117 PECy7 and anti-CD43 PerCP were purchased from BD Bioscience. After staining, cells were analyzed by flow cytometry on a FACS Canto. Data were analyzed with the FlowJo software.
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Flow Cytometric Phenotyping of Macrophages

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Monocyte-derived macrophages or BMDMs were harvested and washed in cold PBS. Cells were incubated in Fc-block reagent (BD biosciences) and fixable viability dye eFluor 780 (Invitrogen) for 15 min at 4°C in cold PBS. Monocyte-derived macrophages were washed once and stained with the following antibodies: anti-CD62L PerCp-Cy5.5 (BD biosciences), anti-CCR2 APC (R and D Systems), anti-F4/80 efluor450 (eBioscience), anti-CSF1R BV711 (Biolegend), anti-Ly6G BUV395 (BD biosciences), anti-CD11b BUV737 (BD biosciences), anti-MHCII(I-A/I-E) PE (eBioscience) and anti-Ly6C PE-Cy7 (eBioscience). BMDMs were washed once and stained with the following antibodies: anti-CD45 FITC (eBioscience), anti-F4/80 BV421 (Biolegend), anti-CD11b BUV395 (BD biosciences). Stained cells were analyzed on by flow cytometry using a BD FACS CANTO instrument. Loss of eGFP or CD45 was assessed by gating on live F4/80 + macrophages using FlowJo X.
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3

Profiling Myeloid Cells in Murine EAE

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Blood was collected in 2% EDTA tubes from the orbital vein of 16 isoflurane-anesthetized mice at disease onset (clinical score ≥ 0.5) and at the peak of the EAE. After blocking Fc receptors, cells were labeled with the following antibodies: anti-Ly-6C FITC (10 µg/mL, AL-21 clone), anti-Ly-6G PE (4 µg/ml, 1A8 clone), and anti-CD11b PerCP-Cy5.5 (4 µg/ml, M1/70 clone) all from BD Biosciences; anti-MHC-II PE-Cy7 (4 µg/ml, M5/114.15.2 clone), anti-CD11c APC (4 µg/ml, N418 clone), and anti-F4/80 eFluor450 (4 µg/ml, BM8 clone) from eBioscience. Analysis was performed in an FACS Canto II cytometer (BD Biosciences) and data analysis was assessed using FlowJo 10.6.2 software (FlowJo, LLC-BD Biosciences).
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4

Myeloid cell recruitment by cancer cell supernatants

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In vivo recruitment of myeloid cells by culture supernatants of treated HCT116 cells was determined in peritonitis assays as described previously with minor variations (47 (link)–49 (link)). In brief, conditioned supernatants were injected intraperitoneally (i.p.) into C57BL/6 mice, and peritoneal lavages were collected from sacrificed mice after 6 h (n = 4 per group) or after 6, 12, and 24 h (n = 2 per group) for time course analyses, respectively. Total numbers of leukocytes were determined by using a Coulter A C T counter (Beckman Coulter, Krefeld, Germany). Cells were stained on ice for 30 min with the following monoclonal antibodies: anti-CD45-APC-Cy7 (from BD Biosciences), anti-CD11b-FITC, anti-Gr-1-PE, anti-F4/80-eFluor450 (from eBiosciences, San Diego, CA, United States). FACS analyses were performed upon lysis of erythrocytes (Gallios, Beckman Coulter). Monocytic cells and granulocytes were distinguished and quantified within the CD45+/CD11b+ myeloid cell population by cell surface expression levels of Gr-1 and F4/80.
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5

Comprehensive Immune Cell Profiling

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Collagenase Type II digested tissues were passed through a 40μm cell strainer. Peripheral blood was prepared by lysing one drop of tail blood for twenty minutes with RBC lysis buffer. Single-cell suspensions were stained with eFluor780- anti-CD45 (eBioscience), PE-anti-Ly6g (BD), APC-anti-Cd11b (eBioscience), FITC-anti-B220 (eBioscience) and eFluor450 anti-F4/80 (eBioscience). Flow cytometry was performed using an LSRFortessa (BD). Flow cytometry data was analyzed using FlowJo software (BD Biosciences).
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6

Analysis of Cytokine Secretion and Intracellular Expression in Immune Cells

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For cytokine secretion, 5×104 cells were plated per well of 96-well plates in 200 μl complete media and allowed to adhere 3 hours - overnight. TLR stimuli were added to the wells and after 16 hours the levels of TNF, IL6,IL12 p40 and IL-10 were measured by enzyme-linked immunosorbent assay (ELISA Ready-SET-Go eBioscience). For intracellular cytokine staining, 1×105 cells were plated per well of 48-well non-TC treated plates and stimulated in the presence of the protein transport inhibitor BD GolgiStop™ (BD Biosciences) for 6 h. For IL-10 neutralization experiments, cells were pre-treated with indicated dilutions anti-IL-10 (clone JES5-2A5, eBioscience) or 1000 ng/ml rat IgG2b isotype control (eBioscience) for 30 minutes prior to addition of stimuli. After stimulation, cells were lifted using enzyme-free Hank's cell dissociation buffer (Life Technologies), blocked with anti-CD16/CD32 (BD Biosciences), fixed, permeabilized and stained with eFluor450 anti-F4/80 (eBioscience), FITC anti-TNF alpha (eBioscience) and PE anti-IL6 antibodies (eBioscience). Apoptotic cells were identified by staining with annexin V and 7-amino-actinomycin D (BD Biosciences). For each experiment, cells were analyzed by flow cytometry using a BD LSR II running FACSDiva software (BD) and with FlowJo (TreeStar).
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