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6 protocols using summit data acquisition and analysis software

1

Assessing T-cell Activation and IFN-γ Production in TB Patients

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PBMCs isolated from TB patients were cultured in at 37°C in a humidified atmosphere with 5% CO2, and stimulated with Lithium chloride (LiCl, Sigma) at 20mM for 24 hours. Then, cells were collected and stained with Pacific blue-conjugated anti-human CD3 (Clone SP34–2, BD), FITC-conjugated anti-human CD14 (Clone HCD14, Bioelgend), BV605-conjugated anti-human CD69 (clone FN50, Biolegend), BV711-conjugated anti-human IFN—γ (Clone 4S.B3, Biolegend), APC-conjugated anti-human betta-catenin (Clone 196624, R&D). After staining, cells were fixed with 2% formaldehyde-PBS (Protocol Formalin, Kalamazoo, MI) and subjected to run on a BD LSRF ortessa flow cytometer (BD Biosciences, Qume Drive, San Jose, CA). Lymphocytes were gated based on forward- and side-scatters, and at least 40,000 gated events were analyzed using Summit Data Acquisition and Analysis Software (Dako Cytomation).
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2

Flow Cytometry Antibody Staining Protocol

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The following antibodies were used for culturing or surface and intracellular cytokine staining (ICS) for flow cytometry: CD28 (CD28.2, BD), CD49d (9F10, BD), CD3-PB (SP34-2, BD), CD4-BV510 (L200, BD), CD8-PB (RPA-T8, BD), IFN-γ-APC (4S.B3, BD), IFN-γ Brilliant Violet 711 (4S.B3, Biolegend), TNF-α-PE (MAb11, BD), TNF-α-PE-Cy7 (MAb11, BD), IL-17-PE (eBio64CAP17, eBioscience), IL-22-biotinylated (anti-human IL-22, RD), Streptavidin-Pacific blue (Invitrogen), Perforin-biotinylated (Pf-344, Mabtech), Caspase 3-AF647 (C92-605,BD), and anti-Vγ2-FITC (7A5, Pierce).
After staining, the cells were fixed and subjected to flow cytometry. Lymphocytes were gated based on forward- and side-scatters, and at least 40,000 gated events were analyzed using Summit Data Acquisition and Analysis Software (DakoCytomation).
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3

Flow Cytometry Analysis of T-cell Subsets

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This was done as we previously described [24 (link), 33 (link), 44 (link)]. Cells were harvested at day 7 after culture and stained with Pacific blue-conjugated anti-CD3 (Clone SP34-2, BD, Franklin Lakes, NJ), PE conjugated anti-CD4 (clone OKT4, eBioscience, San Diego, CA), FITC-conjugated Vγ2 (Clone 7A5, Pierce, Rockford, IL) and purified Vδ2 (clone 15D, Pierce) in combination of allophycocyanin-conjugated goat anti mouse IgG (Dako, Carpinteria, CA). After staining, cells were fixed with 2% formaldehyde-PBS (Protocol Formalin, Kalamazoo, MI) and subjected to run on a CyAn ADP flow cytometer (DakoCytomation, Carpinteria, CA). Lymphocytes were gated based on forward- and side-scatters, and pulse width and at least 40 000 gated events were analyzed by using Summit Data Acquisition and Analysis Software (Dako Cytomation). Further special gates and quadrants for data analysis were determined on nonstaining, specific antibody staining, and isotype control antibody background staining.
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4

Multiparametric Flow Cytometry Analysis

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This was done according to our previously described [34 (link)]. Cells were stained with Pacific blue-conjugated anti-CD3 (Clone SP34–2, BD, Franklin Lakes, NJ), FITC-conjugated anti-CD19(clone HIB19, Biolegend, San Diego, CA), APC-conjugated anti-CD27(clone O323, Biolegend, San Diego, CA), BV605-conjugated anti-CD69(clone FN50, Bio-legend, San Diego, CA), AF700-conjugated anti-CD138(clone MI15, Biolegend, San Diego, CA), PerCP/Cy5.5-conjugated anti-CXCR5 (CloneJ252D4, Biolegend, San Diego, CA), BV510-conjugated anti-CD4 (Clone A161A1, Biolegend, San Diego, CA). After staining, cells were fixed with 2% formaldehyde-PBS (Protocol Formalin, Kalamazoo, MI) and subjected to run on a BD LSRFortessa flow cytometer (BD Biosciences, Qume Drive, San Jose, CA). Lymphocytes were gated based on forward- and side-scatters, and at least 40,000 gated events were analyzed using Summit Data Acquisition and Analysis Software (Dako Cytomation).
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5

Flow Cytometric Analysis of Lymphocyte Activation

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FITC-TCR Vδ2+ antibodies (BD Bioscience) were used to analyze 100 μl samples of anticoagulated blood from the 32 patients. After 10 μl of Phycoerythrin (PE)- FasL, PE-CY7- Fas, CD3-PB antibodies (BD Bioscience) was added, the whole blood samples were then incubated at room temperature for 30 min in the dark. After 1 ml red blood cell lysis buffer was added, cells were incubated at room temperature in the dark for an additional 15–20 min. After vortexing, the supernatant was discarded and the suspensions were centrifuged at 1400 rpm for 5 min. After using PBS (Protocol Formalin, Kalamazoo, MI) to wash again, the remaining cells were then resuspended in 400 μl PBS. Lymphocyte populations were gated based on the forward and side-scatters on a CyAn ADP flow cytometer (Dako Cytomation, Carpinteria, CA). Gated events were analyzed using Summit Data Acquisition and Analysis Software (Dako Cytomation)(Additional files 1, 2, 3 and 4).
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6

Cytokine Analysis by Flow Cytometry

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The following Abs were used for culture or surface and intracellular cytokine staining for flow cytometry: CD28 (CD28.2, BD), CD49d (9F10, BD), CD3-Pacific blue (SP34-2,BD), CD4-BV510 (L200, BD), CD8- Pacific blue (RPA-T8, BD), IFN-γ-APC (4S.B3, BD), IFN-γ Brilliant Violet 711 (4S.B3, Biolegend), TNF-α-PE (Mab11, BD), TNF-α-PE-Cy7 (Mab11, BD), IL-17-PE (eBio64CAP17, eBioscience), IL-22-biotinylated (anti-human IL-22, RD), Streptavidin-Pacific blue (invitrogen), Perforin-biotinylated (Pf-344, Mabtech), Caspase 3-AF647 (C92-605,BD), anti-Vγ2-FITC (7A5, Pierce).
After staining, cells were fixed and subjected to analysis on flow cytometer of BD LSRFortessaTM Cell Analyzer. Lymphocytes were gated based on forward- and side-scatters, and at least 40,000 gated events were analyzed using Summit Data Acquisition and Analysis Software (Dako Cytomation).
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