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3 protocols using pe conjugated anti cd62l

1

Multiparameter Flow Cytometry Analysis of Lymphocyte Subsets

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Cells were harvested and stimulated for 4 h with PMA (50 ng/ml), ionomycin (750 ng/ml), and Brefeldin A (BioLegend). For intracellular staining, cells were fixed and permeabilized (eBioscience) and then stained with FITC-conjugated anti–IFN-γ (505806, BioLegend), PE-conjugated anti–IL-13 (12-7133-81, eBioscience), PerCP/Cy5.5-conjugated anti–IL-17A (506919, BioLegend), and APC-conjugated anti-FOXP3 (17-5773-80, eBioscience) antibodies. To analyze lymphocyte development in Ptenfl/flIl17acre mice, cells isolated from the thymus, pLNs, and spleen were stained with FITC-conjugated anti-CD3ε (11-0031-81, eBioscience), PE-conjugated anti-B220 (12-0451-82, eBioscience), PerCP/Cy5.5-conjugated anti-CD8 (126609, BioLegend), APC-conjugated anti-CD4 (100411, BioLegend), FITC-conjugated anti-CD44 (103006, BioLegend), PE-conjugated anti-CD62L (104407, BioLegend), and PerCP/Cy5.5-conjugated anti-TCR γ/δ (118117, BioLegend) antibodies. For other surface antigen staining, cells were stained with APC-conjugated anti–IL-6Rα (115811, BioLegend), APC-conjugated anti-CD45 (103111, BioLegend), FITC-conjugated anti–GR-1 (108405, BioLegend), and FITC-conjugated anti-CD11b (101205, BioLegend) antibodies. Stained cells were then analyzed using a FACSCalibur flow cytometer (BD Bioscience), and data were analyzed with FlowJo software.
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2

Flow Cytometry Analysis of Murine Lymphocytes

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Conjunctivae tissues were first digested in RPMI (Invitrogen) with 2mg/ml DNase and 2mg/ml Collagenase (Roche) at 37°C. The following Abs were used for flow cytometry analysis: FITC-conjugated anti-CD4, PerCP-Cy5.5-conjugated anti-CD44, PE-conjugated anti- IL-7Rα, APC-conjugated anti- IL-15Rα, PE- conjugated anti-CD62L, FITC-conjugated anti-Ki-67, Brilliant Violet 421-conjugated anti-Annexin V (BioLegend), PE-Cy7-conjugated anti- IL-17, and PE-conjugated anti- IL-17 (eBioscience). For intracellular IL-17 staining, cells were stimulated with 50 ng/mL phorbol 12-myristate 13-acetate and 500 ng/mL ionomycin (Sigma-Aldrich) for 6 hours at 37°C and 5% CO2 in the presence of GolgiStop™ (4 μl per 6 mL cell culture, BD Biosciences) to inhibit cytokine secretion. Stained cell were examined with an LSR II flow cytometer (BD Biosciences), and the results were analyzed using FlowJo software (Tree Star).
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3

Neutrophil CD125 and CD62L Regulation

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Upregulation of surface CD125 was assessed after stimulating neutrophils for 30 min with either IL-5 (30 ng/mL), N-formyl methionine-leucyl-phenylalanine (fMLP; 10 μM) with cytochalasin b (1 μg/mL), or phorbol myristate acetate (PMA; 50 ng/mL) and ionomycin (1 μg/ml) (Sigma Aldrich, St. Louis, MO). Downregulation of surface CD62L expression after stimulation with IL-5 (10-100 ng/mL) for 15 min was assessed via flow cytometry using PE-conjugated anti-CD62L (BioLegend).
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