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2 protocols using apc conjugated anti mouse gr 1

1

Multiparametric Analysis of Murine Immune Cells

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Mice were euthanized on the 126th day. Spleens, inferior epigastric lymph nodes and mesenteric lymph nodes were collected and single-cell suspensions were then obtained from mononuclear cells (MNCs). Cells were stained with fluorescent surface antibodies: FITC-conjugated Anti-Mouse CD4, APC-conjugated Anti-mouse CD8a, FITC-conjugated Anti-mouse CD11b, FITC-conjugated Anti-mouse CD11c, APC-conjugated Anti-mouse Gr-1, APC-conjugated Anti-mouse MHCII (all from BD Biosciences, San Jose, CA, USA). For staining of cytokines: APC-conjugated Anti-mouse IFNγ, PE-conjugated Anti-Mouse IL-4 and PE-conjugated Anti-Mouse IL-17A were purchased from BD Biosciences. Mouse regulatory T cell staining kit (eBioscience, San Diego, CA, USA) was used according to the manufacturer’s instructions. For intracellular cytokine staining, cells were restimulated with Cell Stimulation Cocktail (BD Biosciences) for 4 h at 37 °C. Cell phenotyping and sorting were performed on a BD FACS Calibur system (BD Biosciences) and data were analyzed using FlowJo software.
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2

Intracellular PTX3 and Immune Cell Analysis

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To analyze PTX3 intracellular expression, transfected HEK 293T cells were fixed with 2% PFA and permeabilized with 0.1% Saponin (Sigma Aldrich) in PBS. Indirect intracellular staining was performed with rat anti-PTX3 (MNB4, Abcam) primary antibody, followed by AF488-conjugated anti-rat (Life Technologies) secondary antibody. To identify the various cell populations present in splenocytes, peritoneal lavage and quadriceps harvested from mice, cells were first incubated with anti-mouse CD16 / CD32 (FC block, BD Pharmingen) and stained with the following antibodies: APC-conjugated anti-mouse GR1, PE-conjugated anti-mouse F4/80, FITC-conjugated anti-mouse CD11b, APC-conjugated anti-mouse Ly6c, APC-conjugated anti-mouse CD3, FITC-conjugated anti-mouse CD19, PE-conjugated anti-mouse CD45, or PE-Cy7-conjugated anti-mouse NK1.1 (BD Pharmingen). For detection of alphavirus antigens, indirect intracellular staining was performed using mouse monoclonal anti-alphavirus (3581, Santa Cruz) primary antibody, followed by AF488-conjugated anti-mouse (Life Technologies) secondary antibody. Data acquisition was performed using CyanADP (Beckman Coulter), and analysis was done by Kaluza Flow Analysis Software (Beckman Coulter).
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