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3 protocols using cd14 pe cy7 clone hcd14

1

Leukocyte Uptake of Polymersomes

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Isolated
leukocytes (5 × 105, 100 μL) were plated per
well of a sterile 96-well round-bottom plate (Falcon, Corning) and
mixed with 5 μL of BODIPY-labeled polymersomes in a cell:particle
ratio of 1:5 or 1:50. A polymer amount of 0.385 mg was estimated to
correspond to 5 × 109 polymersomes. To block particle
uptake, leukocytes were incubated with Cytochalasin D (Sigma) at a
final concentration of 10 mM for 15 min at 37 °C, prior to adding
polymersomes. The cells were incubated with polymersomes for 30 or
60 min at 37 °C, 250 rpm. Subsequently, the cells were stained
with LIVE/DEAD Fixable Dead Cell Stain Kit-Far Red (Invitrogen) according
to manufacturer’s recommendations and followed by fluorescent
labeling of cell markers: CD45-BV510 (clone HI30, BD Biosciences),
CD14-PE-Cy7 (clone HCD14, Biolegend), CD66b-BV421 (clone G10F5, BD
Biosciences), CD56-PE (clone C5.9, Cytognos, Spain), and CD3-APC-Cy7
(clone SK7, BD Biosciences). Flow cytometry data were collected on
a BD LSR II (BD Biosciences) and analyzed using FlowJo 10.2 Software
(Figure S1). Dead cells and CD45 negative
events were excluded from the data analysis.
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2

Multiparameter Flow Cytometry for PBMC

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PBMC were washed and stained with 5 μl Live/Dead Violet (Invitrogen) followed by surface staining with the following titrated antibodies: 0.5 μl CD3-AF700 (clone UCHT1, Ebioscience), 2 μl CD4-APC (clone RPA-T4, BioLegend), 2 μl CD8-Efluor605 (clone RPA-T8, Ebioscience), 2 μl CD14-PE/Cy7 (clone HCD14, BioLegend), 2 μl CD16-AF488 (clone 3G8, BioLegend), 1 μl CD19-PE/Cy5 (clone HIB19, BioLegend), 2 μl CD25-APC/Cy7 (clone BC96, BioLegend), 2 μl CD127-NC650 (clone eBioRDR5, Ebioscience), 15 μl HLA-DR-PE (clone L243 BioLegend). Fluorescence minus one controls were used to set gates for CD25, CD127 and HLA-DR. Samples were acquired on a BD LSR II flow cytometer. Results are presented as percentages of cells after gating out of dead cells and doublets. CD4+ and CD8+ T cells were identified as CD3+ cells, whereas CD14+/− and CD16+/− cells were identified as CD3 and CD19 populations. CD25+ CD27 populations were gated on the CD4+ cells.
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3

Multiparametric Immune Profiling of PBMC

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As previously described (6 (link)), PBMC were washed and stained with 5 μL Live/Dead Violet (Invitrogen) followed by surface staining with the following titrated antibodies: 0.5 μL CD3-AF700 (clone UCHT1, eBioscience), 2 μL CD4-APC (clone RPA-T4, BioLegend), 2 μL CD8-eFluor605 (clone RPA-T8, eBioscience), 2 μL CD14-PE/Cy7 (clone HCD14, BioLegend), 2 μL CD16-AF488 (clone 3G8, BioLegend), 1 μL CD19-PE/Cy5 (clone HIB19, BioLegend), 2 μL CD25-APC/Cy7 (clone BC96, BioLegend), 2 μL CD127-NC650 (clone eBioRDR5, eBioscience), and 15 μL HLA-DR–PE (clone L243, BioLegend). Fluorescence minus one (FMO) controls were used to set gates for CD25, CD127, and HLA-DR. Samples were acquired on a BD LSR II flow cytometer. Results are presented as percentages of cells after excluding dead cells and doublets. CD4+ and CD8+ T cells were identified as CD3+ cells, while CD14+/− and CD16+/− cells were identified as CD3 and CD19 populations. CD25+CD27 populations were gated on the CD4+ cells. The network representation of cell populations positively correlated among all infants was done using the igraph package in R. To identify closely related clusters (communities) within the network, the cluster_optimal function was used, implementing an algorithm described in Brandes et. al.(26 (link)).
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