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Cd25 pe cy5

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CD25-PE/Cy5 is a fluorochrome-conjugated monoclonal antibody that binds to the human CD25 receptor. CD25 is expressed on activated T cells, B cells, and natural killer cells, and is a marker of immune cell activation. The PE/Cy5 fluorochrome combination provides a bright signal that can be detected using common flow cytometry instrumentation.

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4 protocols using cd25 pe cy5

1

Comprehensive Immunophenotyping of Antigen-Specific CD4 T Cells

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6-day stimulated, CFSE-labeled PBMCs were subjected to three different panels of staining to measure: phenotypic and cytokine profile, HIV infectivity (p24) and intracellular transcription factors (T-bet and EOMES) in CFSE-low, Ag-specific CD4 T cells. Briefly, cells were first stained for viability with LIVE/DEAD Fixable Aqua Blue (Life Technologies), followed by surface makers staining, including CD3-APC-H7 (BD Bioscience), CD4-PE-Cy5 (BD Bioscience), CD8-BV785 (Biolegend), CD25-PE-Cy5 (Biolegend), CCR5-Pacific Blue (BD Bioscience), α4β7-APC (NIH AIDS Reagent Program), CCR6-APC (R&D Systems), CCR9-PerCP-Cy5.5 (Biolegend). After surface staining, cells were fixed, permeabilized (BD Bioscience) and subjected to intracellular staining, including HIV p24-PE (Beckman Coulter), IL-17-Alexa Fluor 488 (eBioscience), IL-22-APC (eBioscience), IL-2-PerCP-Cy5.5 (Biolegend), IFN-γ-Alexa Fluor 700 (eBioscience), MIP-1β-PE-Cy7 (BD Bioscience). Combination of surface and intracellular staining antibodies may vary according to different assays. For intracellular staining for T-bet and EOMES, cells were fixed and permeabilized using eBioscience’s transcription factor staining buffer set (eBioscience) according to manufacturer’s instructions. Cells were then subjected to intracellular staining with anti-T-bet-Pacific Blue (Biolegend) and anti-EOMES PE-eFluor 610 (eBioscience).
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2

Multiparametric Flow Cytometry Analysis of T-Cell Subsets

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FOXP3‐eFluor 450 (eBioscience, Cat.# 48‐5773‐82, clone: FJK‐16s, 1:333), CD95 (Fas)‐Brilliant Violet 605 (BioLegend, Cat.# 152612, clone: SA367H8, 1:80), CD185 (CXCR5)‐Brilliant Violet 711 (BioLegend, Cat.# 145529, clone: L138D7, 1:40), CD4‐PerCP/Cyanine5.5 (BioLegend, Cat.# 100434, clone: GK1.5, 1:80), CD279 (PD‐1)‐PE (BioLegend, Cat.# 135206, clone: 29F.1A12, 1:20), CD25‐PE/Cy5 (BioLegend, Cat.# 102010, clone: PC61, 1:80), GL7‐eFluor 660 (eBioscience, Cat.# 50‐5902‐82, clone: GL7, 1:80), CD19‐APC/Cyanine7 (BioLegend, Cat.# 115530, clone: 6D5, 1:20), and LIVE/DEAD Fixable Yellow Dead Cell Stain (Thermo Fisher Scientific, Cat.# L34967, 1:7500).
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3

Multiparametric Flow Cytometry Profiling

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TNF‐α‐Brilliant Violet 421 (BioLegend, Cat.# 506328, clone: MP6‐XT22, 1:80), FOXP3‐eFluor 450 (eBioscience, Cat.# 48‐5773‐82, clone: FJK‐16s, 1:300), IL‐2‐Brilliant Violet 711 (BioLegend, Cat.# 503837, clone: JES6‐5H4, 1:40), IFN‐ɣ‐Brilliant Violet 785 (BioLegend, Cat.# 505838, clone: XMG1.2, 1:80), CD8a‐FITC (BioLegend, Cat.# 100706, clone: 53‐6.7, 1:50), CD4‐PerCP‐Cy5.5 (BioLegend, Cat.# 100434, clone: GK1.5, 1:80), CD25‐PE/Cy5 (BioLegend, Cat.# 102010, clone: PC61, 1:80), CD44‐PE/Cyanine7 (BioLegend, Cat.# 103029, clone: IM7, 1:80), IL‐10‐APC (BioLegend, Cat.# 505010, clone: JES5‐16E3, 1:80), CD107b‐Alexa Fluor 647 (BioLegend, Cat.# 108512, clone: M3/84, 1:200), CD3‐APC/Cyanine7 (BioLegend, Cat.# 100222, clone: 17A2, 1:80), and LIVE/DEAD Fixable Yellow Dead Cell Stain (Thermo Fisher Scientific, Cat.# L34967, 1:7500).
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4

Flow cytometric analysis of T cell subsets

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Cells from all treatment groups were taken on the sixth day after treatment and centrifuged at 3000 rpm for 12 minutes. The pellets formed were used for examination using BD FACS Melody flowcytometry. The pellets were washed using PBS and centrifuged at 2500 rpm for 5 minutes. Staining using antihuman antibodies CD4+ FITC & IFN-γ PE for Th1, CD4+ FITC and IL-4 PE for Th2, CD4+ FITC and IL-17A PE for Th17, CD4+ FITC, CD25 PE/Cy5, and FoxP3 PE for Treg, and CD14 for macrophage markers (BioLegend, San Diego, CA, USA).
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