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39 protocols using annexin 5

1

Apoptosis Quantification by FACS

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Trypan blue exclusion was used to assess cell viability. The induction of apoptosis was quantified by fluorescence-activated cell sorting (FACS) on treated cells stained with annexin V. Briefly, cells were washed, resuspended with annexin V binding buffer, stained with fluorescein isothiocyanate (FITC)–conjugated annexin V (Roche, Mannheim, Germany) for 15 min at room temperature in the dark, and then washed and counterstained with propidium iodide (PI). The analysis was performed by a FACSCalibur flow cytometer (Becton Dickinson, Franklin Lakes, NJ) at a wavelength of 488 nm using Cell QuestPro Software (Beckman-Coulter, Fullerton, CA).
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Apoptosis Assay in HeLa Cells

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The HeLa cells were seeded at 2 × 105 cell /well in 6-well plates and irradiation with gamma-ray. After 24 h, the cells were fixed with cold ethanol and then stained with propidium iodide according to kit manuscript (MultiSciences). The cells (about 20,000) were analyzed by flow cytometry (Beckman CytoFLEX, USA). The total cells were washed once and resuspended in Annexin V binding buffer, and then stained with 5 μl Annexin V and 5μl PI (Roche, Germany) for 20 min and analyzed with Beckman CytoFLEX flow cytometry. Ten thousand events were collected for each sample.
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3

Apoptosis Induction in Cell Lines

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Cells were treated with various doses of GCS-100 (La Jolla Pharmaceutical Company), and/or ABT-737 and/or ABT-199 (all from Selleck Chemicals, Houston, TX) for various times. Cell death was assessed by trypan blue staining. To determine that the mechanism of cell death was apoptosis, cells were stained with Annexin V (Roche Diagnostics, Indianapolis, IN) / 4',6-diamidino-2-phenylindole (DAPI) and the percentages of apoptotic cells were assessed by flow cytometry. Apoptotic cells were identified as positive for Annexin V staining using a Becton Dickinson LSR II flow cytometer (Becton Dickinson, San Jose, CA). Total viable cells were determined by total Annexin V negative/DAPI negative cells with counting beads (Roche) included to determine total cell number.
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4

Signaling Pathway Modulation in Cancer

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BMS-345541 was purchased from Sigma (Saint-Quentin-Fallavier, France). Vemurafenib, dabrafenib and trametinib were purchased from Euromedex (Souffelweyersheim, France) and TNFα was from PeproTech (Neuilly-Sur-Seine, France). Antibodies against CD271 was purchased from BD Biosciences (Franklin Lakes, NJ, USA), anti-ERK(D-2); anti-cleaved-PARP, anti-cleaved caspase-3, anti-pERK, anti-caspase-3, anti-JARID1B and TNFα blocking antibody were from Cell Signaling Technology Inc. (Beverly, MA, USA). Anti-IKK and anti-IκBα monoclonal antibodies were purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Anti-ABCB5 monoclonal antibody was purchased from Novus Biologicals (Abingdon, UK). Annexin V was purchased from Roche Diagnostic corporation (Indianapolis, IN, USA).
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5

Apoptosis Assay for Drug Evaluation

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After treated with different drug formulation (DOX 2 μM and ATO 4 μM) for 24 h, cells were collected and washed twice with PBS. Then cells were stained with 7-aminoactinomycin D (7-AAD, Invitrogen) and Annexin-V (Roche) at room temperature for 20 min in dark. The fluorescence was detected by flow cytometry, and the data was analyzed by Flowjo software.
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6

Flow Cytometry Analysis of Apoptosis Induced by Fe3O4@Glu-Safranal NPs

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Flow cytometry assay was used to investigate the effect of exposure to Fe3O4@Glu-Safranal NPs on the population of apoptotic and necrotic cells in the liver cancer cell line. For this purpose, HepG2 cells were treated with a 50% inhibitory concentration of nanoparticles for 24 h and then, the cells were stained by propidium iodide and Annexin V (Roche, Germany). Untreated cells were also considered as the negative control. Finally, the population of apoptotic and necrotic cells was quantified by the Partec™ flow cytometry instrument (Germany).
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7

Evaluating BAFF-Induced B Cell Apoptosis

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Purified B cells were cultured either in medium alone or in the presence of 1.56-25ng ml of recombinant BAFF (R&D Systems) for the indicated time and stained with Annexin V (Roche) and 7-aminoactinomycin D (7-AAD; Sigma-Aldrich).
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8

Viability Assay for Activated PBMCs

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Freshly isolated PBMCs were stimulated with 1 μg/mL PHA overnight. Pre-activated PBMCs were stimulated with IL-2 containing molecules for 4 d before the anti-Fas antibody (clone CH11, Millipore) was added for additional 16 h. The percentage of living cells was measured by using Annexin V (Roche Applied Science) and the LIVE/DEAD Fixable Viability Stain eFluor 660 (eBioscience).
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9

Apoptosis Measurement in MN-1 Cells

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MN-1 cells were seeded on 6-well plate and transfected with Lipofectamine 2000 according to the manufacturer protocols. After 24 h culture medium was substituted with DMEM only to induce cell starvation. After 24 h 1 × 106 cells were resuspended in 100 µl of FACS buffer (DMEM no red phenol, FBS 0.1%, Hepes 12 mM) added with P.I 1:1000 (stock solution 1 mg/ml) and Annexin V 1:100 (Roche, Cat no. 118286810001). Samples were incubated dark at room temperature for 20 min and then analyzed by flow cytometry.
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10

Annexin V and Propidium Iodide Staining

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For flow cytometric detection, 20,000 cells/well were seeded in 24-well microtiter plates and subjected to the appropriate treatment. Next, they were washed and trypsinized. Detached cells and trypsinized adherent cells were collected, pooled, and centrifuged. The cell pellet was resuspended in 50 μl HEPES buffer (10 mM Hepes/NaOH, pH 7.4, 140 mM NaCl, 5 mM CaCl2) and stained with propidium iodide (Sigma-Aldrich) and Annexin V (Roche, Mannheim, Germany). After a 10-minute incubation, samples were analyzed in a BD FACS Canto II (BD Biosciences, Heidelberg, Germany) using FACS Diva Software.
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