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Cyan cytofluorimeter

Manufactured by Agilent Technologies
Sourced in Italy

The CyAn cytofluorimeter is a flow cytometry instrument designed for the detection and analysis of fluorescent-labeled cells. It provides high-speed data acquisition and analysis capabilities for a wide range of applications in life science research.

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3 protocols using cyan cytofluorimeter

1

Identification of mouse CSC by c-Kit

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Bone marrow cells were re-suspended in FACS buffer (PBS/2% FBS/2 mM EDTA) and stained for 1 h at 4 °C with rat anti-c-Kit CD117 Alexa Fluor 647 (Invitrogen: RM6221, Thermo Fisher Scientific-Life technologies, Waltham, MA, USA) antibody. Dead cells were stained with 7 Amino-Actinomycin D dye (Sigma Aldrich).
White blood cells were stained in 100 μl of FACS buffer with rat anti-CD11b PE-Cy7 (Pharmingen: 25-0112, Gurgaon, Haryana, India) and rat anti-GR-1 APC antibodies (Pharmingen: 17-5931) at 4 °C for 1 h. Dead cells were stained with Sytox-Blue dye. Analysis was performed with CyAn cytofluorimeter (Dako, Milano, Italy).
Isolated CSC analysis was performed on FACSCanto II with FlowJo software to identify c-Kit expression by mouse monoclonal APC-conjugated anti-c-Kit antibody (Miltenyi). Appropriate labeled isotype controls were used to define the specific gates.
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2

Multiparametric Analysis of Thymocytes

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Single-cell suspensions of thymocytes were stained for 20 min with anti-CD4-PE, anti-CD8-FITC, or anti-TCR-β-APC antibodies (1:50; Miltenyi Biotec, Bologna, Italy) at 4 °C. Dead cells were stained with SYTOX® Blue (Thermo Fisher Scientific-Life Technologies, Waltham, MA, USA). Analysis was performed with CyAn cytofluorimeter (Dako, Milan, Italy) and analyzed using FlowJo software (version 7.2.4). Blood was collected from mouse eyes 1 week before the sacrifice and cells stained with anti-CD45-eFluor450 antibody (1:100; eBioscence, San Diego, CA, USA) to exclude red cells and with anti-CD3-APC, anti-CD4-PE, and anti-CD8-FITC antibodies (1:50; Miltenyi Biotec) to detect mature T cells.
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3

Cell Cycle Synchronization and Analysis

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HL-1 and NIH3T3 cells were initially plated at a density of 5 x 10 5 cells/well in 3.5 cm dishes. Next day cells were transfected with PDE5A isoforms GFP-tagged vectors. Twenty four hours later, cells were synchronized with 0.5 mM L-Mimosine (Sigma-Aldrich, CA, USA). After 16 hrs, cells were washed with PBS and incubated in fresh culture media. At various times after release from the L-Mimosine block the cells were treated with trypsin, harvested, and centrifuged at 2000 g for 5 min.
The pellets were washed with PBS and then centrifuged again. Cells were fixed with 1% w/v paraformaldehyde for 1hr at 4°C, then centrifuged for 5 min at 300 g; supernatant was removed by aspiration and pellets washed with PBS. For cell membrane solubilization, 1 ml 70% v/v ethanol was added to the cell pellet, and cell suspension incubated overnight at 4°C. Fixed cells were washed with PBS, centrifuged and incubated for 3 hr at room temperature with propidium iodide/RNAse A solution (PI, 50 μg/mL, Sigma-Aldrich, CA, USA), ribonuclease (1 mg/ml Sigma-Aldrich, CA, USA). The cell cycle distribution and DNA content were measured using a CyAn cytofluorimeter (Dako). 5 x 10 3 cells were counted for each sample. The percentage of cells in different phases of the cell cycle was analyzed by FlowJo (TreeStar, Ashland, OR, USA).
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