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5 protocols using cd27 pe m t271

1

Comprehensive Immune Cell Profiling

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We performed flow cytometry analysis using the following antibodies: CD3-Percp-Cy5.5 (HIT3a, BD Bioscience), CD8-APC (RPA-T8, BD Bioscience), CD27-PE (M-T271, BD Bioscience), CD28-APC (CD28.2, BD Bioscience), CD45RO-PE (UCHL1, BD Bioscience), CD62L-FITC (DRGE-56, BD Bioscience), αvβ3-FITC (LM6090, EMD Millipore,), αvβ5-FITC (P1F6, EMD Millipore), and NRP-1-PE (AD5-17F6, Miltenyi Biotec GmbH). All samples tested were suspended in FACS buffer and stained with indicated antibodies for 30 min in 4 °C in darks, and then, washed twice, and resuspended in FACS buffer before analysis. For IFN-γ detection, BD™ Cytometric Bead Array (CBA) Human IFN-γ kit (BD Bioscience, USA) was used. Samples were analyzed with BD Accuri C6 (BD Bioscience).
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2

Isolation and Characterization of Human B Cells

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B cells were isolated from PBMCs of healthy blood donors (Blood Transfusion Center Solna, Stockholm, Sweden) according [54 (link)]. Briefly, B cells were isolated either through negative selection (B Cell Isolation Kit II; Miltenyi Biotec) or by positive selection using biotinylated anti-IgD Ab (Southern Biotech) and Anti-Biotin MicroBeads (Miltenyi Biotec). The purity and B cell composition of each donor were assessed by flow cytometry, staining for CD19-allophycocyanin (HIB19; BD), IgD-FITC (IA6–2; BD), CD38-PECy (HB7; BD), CD27-PE (M-T271; BD), and DAPI (5.7 μM; Sigma-Aldrich) using an LSR II or Fortessa (BD) and analyzed using FlowJo software (TreeStar).
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Comprehensive Immune Cell Phenotyping

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The antibodies used for pheno-typing included CD3 (PerCP, SK7), CD14 (PerCP, HCD14), and CD19 (APC-Cy7, HIB19) from BioLegend (San Diego, CA, USA). CD27 (PE, M-T271) was from BD Biosciences (San Jose, CA, USA), Live/Dead Fixable Dead Cell Stain Kits from Invitrogen (Eugene, OR, USA), and TLR4 and TLR9 from eBioscience (San Diego, CA, USA). Surface phenotyping and intracellular staining for TLR9 were performed as per manufacturer’s instructions. All flow cytometric data were acquired on LSR Fortessa (BD Biosciences) and analyzed using FlowJo (Tree Star Inc., Ashland, OR, USA).
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4

Longitudinal Immune Profiling in Humanized Mice

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Immunophenotyping was performed on peripheral blood samples collected longitudinally and at the study endpoint on whole blood and on mononuclear cells isolated from the tissues of humanized mice. Prior to antibody incubation, Ig-binding sites were blocked. The fluorochrome-conjugated antibodies included CD45-V500 (HI30, BD Biosciences, San Jose, USA), CD3-APC-R700 (UCHT1, BD Biosciences, San Jose, USA), CD4-APC-H7 (RPA-T4, BD Biosciences, San Jose, USA), CD8-FITC (SK1, BD Biosciences, San Jose, USA), CD19-PE-Cy7 (SJ25C1, BD Biosciences, San Jose, USA), CD27-PE (M-T271, BD Biosciences, San Jose, USA), CD38-APC (HB7, BD Biosciences, San Jose, USA), CD45RA-Pacific Blue (F8-11-13, Bio-Rad, Hercules, USA), HLA-DR-PerCP (L243, BD Biosciences, San Jose, USA), mouse IgG1k-APC (MOPC-21, BD Biosciences, San Jose, USA), mouse IgG1k- Pacific Blue (MOPC-21, BD Biosciences, San Jose, USA), mouse IgG1k-PE (MOPC-21, BD Biosciences, San Jose, USA) and mouse IgG2ak-PerCP (X39, BD Biosciences, San Jose, USA). After antibody incubation, blood samples were lysed with t 1× BD FACS lysing solution (BD Biosciences, San Jose, USA). Samples were then analyzed on a BD LSRFortessa instrument (BD Biosciences, San Jose, USA).
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5

Isolation and Characterization of B Cells

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B cells were isolated from PBMCs of healthy blood donors (Blood Transfusion Center Solna or Banc de Sang i Teixits, Barcelona, Spain). B cells were isolated either through negative selection (B Cell Isolation Kit II; Miltenyi Biotec) or by positive selection using biotinylated anti-IgD Ab (Southern Biotech) and Anti-Biotin MicroBeads (Miltenyi Biotec). The purity and B cell composition of each donor were assessed by flow cytometry, staining for CD19-allophycocyanin (HIB19; BD), IgD-FITC (IA6-2; BD), CD38-PECy (HB7; BD), CD27-PE (M-T271; BD), and DAPI (5.7 µM; Sigma-Aldrich) using an LSR II or Fortessa (BD) and analyzed using FlowJo software (TreeStar).
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