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2 protocols using tcrγδ pe

1

Multiparametric Flow Cytometry Analysis

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Blood samples (EDTA) were stained with the following monoclonal antibodies: CD3-eFluor605, CD4-eFluor450, TCRγδ-PE (eBioscience), CD45RO-FITC, CCR7-PE-Cy7, CD4-PerCP, CD8-PerCP, CD8-APC-H7, DNAX accessory molecule-1 (DNAM-1)-FITC (BD), CD161-PE, CD161-APC (Miltenyi), 2B4-PE, NKG2D-PE-Cy7, TCR-Vα7.2-FITC, TCR-Vα24-Jα18-FITC (Biolegend), TCR-Vβ11-PE (Beckman Coulter), and KLRG1-FITC (generous gift from H. Pirchner). An overview of antibody panels is shown in Table S1 in Supplementary Material. Samples were subsequently treated with BD Lysing Solution (BD Biosciences) according to instructions of the manufacturer. Samples were measured on a LSR-II flow cytometer (BD) and analyzed with Kaluza Analysis Software (Beckman Coulter). In addition, the absolute numbers of circulating lymphocyte subsets were determined according to the MultiTest TruCount method (BD), as described by the manufacturer. Data were acquired on a FACSCanto-II flow cytometer (BD) and analyzed with FACSCanto Clinical Software (BD). The number of events for a particular T cell population needed to be more than 100 to allow for subsequent analysis of cellular markers, cytokines, and cytotoxic molecules.
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2

Immunophenotyping of Intestinal Intraepithelial Lymphocytes

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Cells from the above preparations were diluted to 0.5–1 × 106 cells/ml and labeled according to the single-, two-, or three-color staining procedure using FITC, allophycocyanin (APC), Perp-cy5.5, and phycoerythrin (PE)-labeled mAbs, including CD45-Perp-cy5.5, CD3-APC (BD Pharmingen, San Diego, CA, USA), CD8-PE, CD4-FITC, T-cell receptor (TCR) αβ-PE, TCR γδ-PE, CD20-PE (e-Bioscience, San Diego, CA, USA). Appropriate isotype-matched mAbs were used as negative controls. Labeled IELs were analyzed on an FACScan flow cytometer (Becton Dickinson, CA, USA).
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