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7 protocols using anti cd5 fitc

1

Tetramer Staining of Antigen-Specific T Cells

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Frozen peripheral blood leukocytes (PBL) were thawed and washed in HSA (0.4 g/L) CO2 independent (Invitrogen) medium before incubation for 1 h with DNAase (10 µg/mL) in the same medium at RT. The cells were then stained with BMFL1 (EBV) (GLCTLVAML) APC-conjugated HLA-A2 tetramers and one of the following PE-conjugated HLA-A2 tetramers all at 20 nM: Melan-A (ELAGIGILTV); MAGE-A3 (KVAELVHFL); MAGE-A1 (KVLEYVIKV), NY-ESO-1 (SLLMWITQV). All tetramers were kindly provided by D. Coleau from LICR, Brussels. After a 30 min incubation at RT, the cells were incubated with anti-CD45RO-Alexa-700 (Becton-Dickinson), anti-CD8β-PE-Cy5.5 (Beckman-Coulter), anti-CD5-FITC (BD), anti-CD4+-PE-Texas-Red, and anti-CD27-Qdot-605 (Invitrogen) for 30 min. After further washes, the cells were acquired on a Canto-B (Becton Dickinson) and analyzed using FlowJo software (Tree-star).
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2

Flow Cytometry and Immunoblotting Analysis

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The following antibodies were used for flow cytometry analysis: anti-Apo2.7-PE, anti-CD5-FITC, anti-CD19-APC and control IgG1-FITC mAbs were purchased from BD Biosciences (Le Pont de Claix, France). Analysis of protein expression was conducted by immunoblotting using the following primary antibodies: anti-Bcl-2, anti-IκBα and anti-phosho-IκBα (Cell Signaling, Saint Quentin en Yvelines, France), Anti-Mcl-1 (S19) (Santa Cruz Biotechnology, Santa Cruz, CA), anti-Bcl-xL (BD Biosciences, Le Pont de Claix, France), Anti-NF-κB p52 Antibody and anti-actin (Merck Millipore, Lyon, France). ABT-199 was kindly provided by Abbvie Laboratories (North Chicago, IL, USA) and the selective BTK inhibitor ibrutinib (PCI-32765) was obtained from Selleck Chemicals (Souffelweyersheim, France).
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3

Multiparameter Flow Cytometry Analysis

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Cells were washed with ice-cold PBS once, incubated with appropriate
fluorochrome-conjugated antibodies for 30 min at 4°C and
washed twice with ice-cold PBS containing 0.5% FCS. The following antibodies
were used: anti-CD3-PE (mouse, BD Biosciences, 555333), anti-CD5-FITC (mouse, BD
Biosciences, 555352), anti-CD14-PECy7 (mouse, ebioscience, 25–0149-42),
anti-CD19-APC (mouse, BD Biosciences, 555415), anti-CD27-PE (mouse BD
Biosciences, 555441), anti-CD38-APC (mouse, BD Biosciences, 555462),
anti-CD38-FITC (mouse, BD Biosciences, 555459). Surface protein expression was
detected by a BD FACSCalibur cell analyzer (BD Biosciences) and data were
analyzed using the FlowJo software.
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4

Multiparametric Flow Cytometry of BM

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The composition of cells in BM was tested by flow cytometry, like CD3+ T lymphocytes, CD4+ T cells, CD8+ T cells, Treg cells, and B cells. Anti‐CD45 (PC7, clone: J33, Beckman Coulter; PE‐cy7, clone: HI30, BD bioscience), anti‐CD3 (ECD, clone: UCHT1, Beckman Coulter), anti‐CD4 (PE, clone: SK3, BD bioscience), CD71 (FITC, clone: M‐A712, BD bioscience), anti‐CD8 (FITC, clone: B9.11, Beckman Coulter), anti‐CD25 (Pacific Blue, clone: B1.49.9, Beckman Coulter), anti‐CD127 (PE‐cy5, clone: A019D5, Biolegend), anti‐CD19(PE‐cy5, clone: J3‐119, Beckman Coulter), anti‐CD20 (ECD, clone: B9E9, Beckman Coulter), anti‐CD5 (FITC, clone: L17F12, BD bioscience), anti‐CD10 (PE clone: ALB1, Beckman Coulter) antibodies were purchased. Flow data were acquired on Beckman Coultor Navios (Beckman Coulter, Atlanta, GA) and analyzed using FCS express version 3 software (De Novo Software, Glendale, CA).
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5

Antibody-mediated Cytotoxicity Assay

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Target cells were incubated with Peripheral Blood Mononuclear Cells (PBMCs) at effector to target cell ratios (E:T) 25:1 with rituximab (50 µg/mL), ahuUMG1 (25–100 µg/mL) antibodies or medium alone, o/n at 37°C in RPMI/10% fetal calf serum. Residual T lymphocytes CD8+ (CD45+, CD3+ and CD8+), T lymphocytes CD4+ (CD45+, CD3+ and CD4+), B lymphocytes (CD45+, CD3− and CD19+) and T-ALL cells (CD45dim, CD3 dim/− and CD5+) were analyzed by flow cytometry using a BD FACS CANTO II. The proportion of cells remaining was expressed as a percentage of control cultures incubated without the antibody. The following monoclonal antibodies were used for antigen detection: anti-CD3 PerCP Cy5.5 (Biolegend), anti-CD4 PE (Biolegend), anti-CD8 APC-H7 (Biolegend), anti-CD45 PO (Thermo Fisher Scientific), anti-CD19 PC7 (Beckman Coulter) and anti-CD5 FITC (BD).
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6

Multiparameter Flow Cytometry Analysis

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Cells were washed with ice-cold PBS once, incubated with appropriate
fluorochrome-conjugated antibodies for 30 min at 4°C and
washed twice with ice-cold PBS containing 0.5% FCS. The following antibodies
were used: anti-CD3-PE (mouse, BD Biosciences, 555333), anti-CD5-FITC (mouse, BD
Biosciences, 555352), anti-CD14-PECy7 (mouse, ebioscience, 25–0149-42),
anti-CD19-APC (mouse, BD Biosciences, 555415), anti-CD27-PE (mouse BD
Biosciences, 555441), anti-CD38-APC (mouse, BD Biosciences, 555462),
anti-CD38-FITC (mouse, BD Biosciences, 555459). Surface protein expression was
detected by a BD FACSCalibur cell analyzer (BD Biosciences) and data were
analyzed using the FlowJo software.
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7

Isolation of Murine Peritoneal B-1a and CLL Cells

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Normal peritoneal cells were obtained from 2- to 3-month-old C57BL/6 mice by peritoneal lavage with Hank's buffered salt solution. Anti-B220/CD45RB (APC), anti-CD11b (PE) and anti-CD5 (FITC) antibodies (BD Pharmingen, San Jose, CA) were used to identify and sort B-1a B cells from the peritoneum. Wild-type C57BL/6 mice were used for splenic B-2 cells. Eμ-Tcl1 spleens were obtained from our collaborators at Ohio State University. Eμ-Tcl1 cells were stained with anti-CD5 (FITC) and anti-CD19 (PE or PE-CY7) to determine purity. Peritoneal Eμ-Tcl1 cells were obtained via our adoptive transfer model mice. In the adoptive transfer model, single-cell suspension of 107 Eμ-Tcl1 splenocytes were injected into naive C57/BL6 mice via the intravenous route. Mice were bled weekly after 3 weeks from injection to determine the percentage of B-1 cells in peripheral blood. Once the percentage of B-1 cells (CD5+CD19+) was ≥ 90%, mice were euthanized and peritoneal and splenic CLL cells were obtained.
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