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6 protocols using annexin 5 pe

1

Tumor Cell Viability Assay

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B16-F10 cells isolated from mouse tumor tissues were tested for viability. Viability of tumor cells in control and treatment conditions was evaluated using Annexin V-PE (Miltenyi Biotec®, Bergisch Gladbach, Germany) and PI staining. The stained cells were acquired using a MACSQuant Analyzer 10 Flow Cytometer (Miltenyi Biotec®), and the data were processed using Flowlogic (Miltenyi Biotec®).
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2

Multicolor Flow Cytometry of Tumor-Derived Cells

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Cells isolated from mouse tumors were incubated and stained with various appropriately diluted (Supplementary Table S1) combinations of the following fluorochrome-conjugated antibodies: anti-CD45-VioBlue or VioGreen (130-110-802, 130-102-776), anti-CD11b-FITC or PerCP Vio700 (130-109-289), anti-Gr1-PE (130-102-426), anti-CD106-PE (130-104-712), anti-Sca1-PE Vio700 (130-106-220), anti-CD73-FITC (130-102-535), anti-CD29-APC (130-102-557), anti-CD44-VioBlue (130-116-495), anti-CD34-FITC (130-105-831), anti-CD31-PE (130-102-608), anti-CD140 (PDGFR alpha)-APC Vio 770 (130-105-119), anti-Ter119-APC (130-102-290), Lineage Cell Detection Cocktail-Biotin-APC Vio 770 (130-092-613), anti-CD49b-PE (130-102-337), anti-Ly6C-FITC (130-111-777), anti-Ly6G-APC (130-102-295), anti-CD117-PE (130-111-615), anti-CD135-APC (130-102-512), anti-CD127-APC (130-102-529), anti-CD122-FITC (130-102-481), Annexin V-PE (130-108-112), and Propidium Iodide Solution (130-093-233) (Miltenyi Biotec®, Bergisch Gladbach, Germany). The stained cells were acquired using a MACSQuant Analyzer 10 Flow Cytometer (Miltenyi Biotec®), and the data were processed using Flowlogic (Miltenyi Biotec®).
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Apoptosis Assessment by Annexin V-PE

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Apoptosis was assessed using Annexin V-PE (Miltenyi Biotec) as described in the Supplementary Information.
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4

Red Blood Cell Membrane Profiling

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Phosphatidylserine (PS) exposure at the outer membrane leaflet of RBCs and CD47 were assessed using Annexin V-PE (Miltenyi, 130-118-363) and anti-CD47-PE antibody (Miltenyi 130-101-348), respectively. Briefly blood samples were centrifuged at 1000×g for 5 min at RT. RBCs pellets were washed in PBS and resuspended at 0.2% Hct in the appropriate staining buffer according to manufacturer instructions. RBCs suspensions were incubated with Annexin-V-PE (1:11 dilution) or CD47-PE (1:34 dilution) for 20 min in the dark at RT. Unstained RBCs and isotype control (1:51 dilution, REA-PE, Miltenyi) were used as negative controls for PS exposure and CD47 levels, respectively. After incubation, samples were washed twice in their respective staining buffer and analyzed by flow-cytometry (MACSQuant Analyzer 10, Miltenyi). Gating was performed on 100,000 RBCs per condition.
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5

Flow Cytometry Analysis of Immune Cells

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The differential immune cell count was determined by using either NovoCyte or Beckman Coulter CytoFLEX flow cytometers and analyzed with NovoExpress (Acea Biosciences, USA) or CytExpert software (Beckman Coulter, USA). Differential immune cell counts were performed as previously described (Chan et al. 2016 ). Leukocytes were identified as CD45+, alveolar macrophages as CD11c+Siglec-F+, eosinophils as CD11cSiglec-F+, neutrophils as GR-1+CD11b+ or Ly-6G+CD11b+, B cells as CD3/CD19+ and T cells as CD3+/CD19 cells. All antibodies were from Miltenyi Biotech: CD45-VioBlue (130–110-802), CD45-PE (130–110-797), CD64-APC-Vio770 (130–118-685), Siglec-F-PE-Vio770 (130–112-334), Siglec-F-APC (130–102-241), CD11b-PE-Vio615 (130–113-807), CD11b-FITC (130–098-085), CD11c-PE-PerCP700 (130–110-842), CD11c-PE (130–102-799), Ly-6G-PerCP700 (130–117-500), Gr-1-PE (130–112-306), Gr-1-APC (130–102-833), CD3-APC-Vio770 (130–119-793), CD19-PE-Vio770 (130–111-885), Annexin-V-PE (130–118-363), and Viobility 405/520 Fixable Dye (130–109-814).
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6

Cell Cycle and Apoptosis Analysis

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DNA content measurement for analyzing cell cycle parameters was performed according to Kaltschmidt and colleagues [34 (link)] by harvesting 1 x 106 cells at 300 g for 5 min followed by fixation with 70% (v/v) ethanol. After centrifugation at 300 x g for 10 minutes, staining solution (PBS containing 1 mg/ml glucose (Carl Roth GmbH), 4´,6-diamidino-2-phenylindole (DAPI; 0.5 mg/ml; Sigma-Aldrich), and 100 Kunitz units RNaseA (Thermo Fisher Scientific) was applied for 60 min under exclusion of light.
For apoptosis measurement, 1 x 106 cells were labeled with Annexin V-PE (Miltenyi Biotec, Bergisch Gladbach, Germany) according to the manufacturer’s instructions. For analysis of H2B-mCherry, 1 x 106c-REL+/+ and c-REL-/- cells were harvested and directly applied for flow cytometric analysis without additional staining procedures.
DAPI or Annexin V-PE-labeled cells as well as unstained cells (H2B-mCherry) were analyzed using a Gallios 10/3 flow cytometer (Beckman Coulter, Brea, CA, USA). Data analysis was performed using FlowJo Software (TreeStar, Olten, Switzerland), doublet discrimination for cell cycle analysis was assured by appropriate gating strategies.
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