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Apc cd3 antibody

Manufactured by BD

The APC-CD3 antibody is a fluorescently labeled monoclonal antibody that binds to the CD3 complex on the surface of T cells. The CD3 complex is essential for T cell activation and signaling. The APC (Allophycocyanin) fluorescent label allows for the identification and analysis of T cells in flow cytometry applications.

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4 protocols using apc cd3 antibody

1

Inhibition of T-cell Proliferation by hUC-MSCs

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The hUC-MSCs were seeded in 12-well plates at a density of 5 × 104 cells/well and pretreated with IFN-γ (40 ng/ml) and ATP (2 mM), as described above. hPBMCs (1 × 106 cells/ml) were activated using anti-CD3/CD28 antibodies for 48 h and then cultured with IL-2 (200 U/ml) alone for 48 h. The hPBMCs were incubated with 5 μM CFSE (Beyotime) for 20 min at a concentration of 106 cells/ml. They were protected from light during the entire procedure. After labeling, hPBMCs were stimulated with 200 IU/ml IL-2 (Acrobiosystems) in T-cell culture medium (RPMI 1640 medium supplemented with 10% FBS, 1% penicillin, and 1% glutamine) and co-cultured with or without pretreated hUC-MSCs (hUC-MSC: hPBMC ratio = 1:10) at 37°C and 5% CO2. After 3 d, hPBMCs were collected, and CD3+ T-cell proliferation was measured by flow cytometry as a decrease in CFSE intensity because of cell division from the original population. APC-CD3 antibody was purchased from BD Biosciences.
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2

Porcine PBMC Isolation and T Cell Purification

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Whole blood was collected from newborn piglets, 40-day-old pigs or 120-day-old pigs. Peripheral blood mononuclear cells (PBMCs) were isolated by a density centrifugation using a porcine peripheral blood lymphocyte separation kit (Solarbio) and cultured in RPMI 1640 medium with 10 % FBS (Gibco) and 1% penicillin/streptomycin (20 ng/mL) at 37°C with 5 % CO 2 . Red blood cells (RBCs) were separated as a centrifuged pellet a er purification of PBMCs were washed three times in Dulbeccoʼs phosphate saline (lacking Ca2 + and Mg2 + , DPBS) and stored in Red Cell Storaging Solution (Solarbio) at 4 °C. To isolate T cells, PBMCs were labeled with APC-CD3 antibody (BD Biosciences), incubated with anti-APC microbeads and sorted using MiniMACS Starting kits. Vero E6 cells were kindly provided by the Veterinary Medicine Research Center of the Da Bei Nong Group.
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3

Evaluating Cell Viability and Niche Cells in CLL

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The percentage of viable cells was determined by staining with 3,3 dihexyloxocarbocyanine iodide (DiOC6; Molecular Probes) and propidium iodide (PI; Molecular Probes), as previously described [38 (link)]. Relative changes in cell numbers were measured by counting cells at high sample flow for 20 seconds on a BD FACSCalibur (BD Biosciences, Franklin Lakes, NJ, USA). The viability of CD3+ T cells was measured in CLL PBMC co-cultures with NLC by flow cytometry after staining with CD3-APC antibody (BD Pharmingen), Annexin-V-FITC, and 7-AAD (Biolegend). To assess the NLC numbers, nonadherent cells were removed by pipetting, the adherent NLC were fixed with absolute methanol for 5 minutes and then stained with modified Giemsa stain (diluted 1:20 in PBS) for 1 hour. NLC were visualized using a phase-contrast microscope (Model ELWD 0.3; Nikon, Melville, NY, USA) with a Ph1 Plan 10 DL/0.25 160/- objective lens. Images were captured with a Nikon D40 digital camera (Nikon Corp) with the help of digiCamControl ver. 1.2.0.0 (http://digicamcontrol.com/). Average numbers of NLC counted in 8 different visual fields are reported.
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4

Evaluating Cell Viability and Niche Cells in CLL

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The percentage of viable cells was determined by staining with 3,3 dihexyloxocarbocyanine iodide (DiOC6; Molecular Probes) and propidium iodide (PI; Molecular Probes), as previously described [38 (link)]. Relative changes in cell numbers were measured by counting cells at high sample flow for 20 seconds on a BD FACSCalibur (BD Biosciences, Franklin Lakes, NJ, USA). The viability of CD3+ T cells was measured in CLL PBMC co-cultures with NLC by flow cytometry after staining with CD3-APC antibody (BD Pharmingen), Annexin-V-FITC, and 7-AAD (Biolegend). To assess the NLC numbers, nonadherent cells were removed by pipetting, the adherent NLC were fixed with absolute methanol for 5 minutes and then stained with modified Giemsa stain (diluted 1:20 in PBS) for 1 hour. NLC were visualized using a phase-contrast microscope (Model ELWD 0.3; Nikon, Melville, NY, USA) with a Ph1 Plan 10 DL/0.25 160/- objective lens. Images were captured with a Nikon D40 digital camera (Nikon Corp) with the help of digiCamControl ver. 1.2.0.0 (http://digicamcontrol.com/). Average numbers of NLC counted in 8 different visual fields are reported.
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