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5 protocols using anti fas jo2

1

Multiparameter Flow Cytometry Analysis of Germinal Center B Cells

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Spleen and lymph nodes were isolated and mashed into media containing
2% FCS. For analysis of GC B cells, cells were stained with anti-B220
(RA3-6B2; BD Biosciences or Biolegend); anti-CD19 (6D5; BD Biosciences);
anti-Fas (Jo2; BD Biosciences); anti-IgD (11-26c.2a; BD Biosciences or
Biolegend); anti-CD45.1 (A20; BD Biosciences or Biolegend); anti-CD45.2 (104; BD
Biosciences or Biolegend); anti-IgG2b (RMG2b-1; BD Biosciences); homemade
Alexa647 conjugated DEL; antibody to T cell and B cell activation antigen (GL7;
BD Biosciences); anti-Mouse Eα52-68 peptide bound to I-Ab(Y-Ae, eBioscience); anti-integrin β1 (MB1.2; Chemicon); anti-integrin
β2 (C71/16; BD Biosciences); anti-integrin β3 (2C9.G2;
Biolegend); anti-integrin β7 (M293; BD Biosciences); anti-integrin
α4 (PS/2; Bio X Cell); anti-integrin αL (M17/4; Bio X
Cell); anti-integrin αV (RMV-7; BD Biosciences); rat IgG2a
isotype control (2A3; Bio X Cell); rat IgG2b isotype control (LTF-2; Bio X Cell)
or rat IgG1 isotype control (R3-34; BD Biosciences). BrdU staining was done
using BrdU flow kit (BD Biosciences) following manufacturer's
instructions. For intracellular staining of phosphorylated AKT at Ser473 (pAKT),
cells were instantly fixed and stained as described (35 (link)). Anti-pAKT (9271; Cell Signaling Technology) was
used.
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2

Comprehensive Immune Cell Staining

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The following staining reagents were used: anti-CD3 (145-2C11), anti-CD4 (H129.19), anti-CD62L (MEL-14), anti-CD44 (IM7), anti-CD45R (RA3-6B2), anti-PD-1 (29F.1A12), anti-PD-L1 (10F.9G2), anti-ICOSL (HK5.3), anti-CD40 (HM40-3), anti-CD40L (MR1), anti-CXCR4 (L276F12), and anti-IL-4 (11b11) were from Biolegend (San Diego, CA, USA); anti-CD19 (eBio1D3), anti-ICOS (7E.17G9), anti-IL-21 (mhalx21), anti-CD69 (H1.2F3), and anti-GL7 (GL-7) were from eBiosciences (San Diego, CA, USA); anti-Bcl-6 (K112-91), anti-CXCR5 (2G8), and anti-Fas (Jo2) were from BD Biosciences (Franklin Lakes, NJ, USA). PNA (B-1075; Vector Laboratories, Burlington, ON, Canada) was used for staining germinal center B cells and MOMA-1 (Abcam, Cambridge, UK) for staining MZ macrophages.
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3

Murine B Cell Phenotyping and Detection

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Fluorophore-labeled anti-B220 (RA3-6B2) and anti-FAS (Jo2) antibodies were from BD; anti-CD138 (281-2), anti-CD21/35 (CR2/CR1), and anti-IgD (11-26c2a) antibodies were from BioLegend; anti-GL7 (GL7), anti-CD38 (90), and anti-rabbit IgG antibodies were from Invitrogen; rabbit anti-cCasp3 and the matching isotype control antibodies were from Cell Signaling; and anti-GFP antibody was from Abcam. The fixable viability dye, zombie yellow, was from BioLegend. NP18-OVA, NP30-Ficoll, NP2-BSA, NP-PE, and 4-hydroxy-3-iodo-5-nitrophenylacetyl (NIP)-BSA-biotin were from Biosearch Technologies. NP-APC conjugates were made by allowing NP-Osu (Biosearch Technologies) and APC (BioLegend) to react for 4 h at room temperature in a buffer containing 0.1 M NaHCO3 and 0.15 M NaCl2 (pH 8), at a molar ratio of 20:1. Dextran (200 kD, 31398) and Dextran-FITC (2,000 kD, FD2000S) were from Sigma-Aldrich.
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4

Modulating Cell Death Pathways

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In HepG2 cells or PHHs, Fas receptor stimulation was performed with 10 ng/mL of super-hFasL (ALX-522-020, Enzo Life Sciences Inc., Farmingdale, NY). DR4/DR5 receptor stimulation was performed with 1 mg/mL of active recombinant human soluble TRAIL (catalog number 310-04, PeproTech, Rocky Hill, NJ). In PMHs, Fas receptor stimulation was performed with the agonistic monoclonal antibody anti-Fas Jo2 (catalog number 554255, BD Pharmingen) alone at 2 mg/mL. To enhance FasL-induced apoptosis, cells were pretreated with the 60 mg/mL of the p53 inducer bleomycin (Sigma-Aldrich) or 0.2 mg/mL of doxorubicin (Sigma-Aldrich). To neutralize TRAIL-induced apoptosis, cells were pretreated with 10 mg/mL of DR4 (HS101, 10 P's BVBA, Breda, the Netherlands) and/or DR5 blocking antibody (HS201, 10 P's BVBA, Breda, the Netherlands).
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5

Modulation of Fas-Mediated Apoptosis in HepG2 and PMHs

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In HepG2 cells, Fas receptor stimulation was performed with the agonistic monoclonal antibody anti-Fas CH11 (catalog number SY-001; MBL, Nagoya, Japan) at 2 mg/mL plus 0.5 mg/mL actinomycin D (catalog number A1410; Sigma-Aldrich, St. Louis, MO). In PMHs, Fas receptor stimulation was performed with the agonistic monoclonal antibody anti-Fas Jo2 (catalog number 554255; BD Pharmingen, San Diego, CA) alone at 2 mg/mL. To oppose agonistic anti-Fas antibodyeinduced apoptosis, cells were pretreated with the Fas receptor antagonistic monoclonal antibody anti-Fas ZB4 (catalog number MD-11-3; MBL) at 2 mg/mL or AKT activator SC79 (catalog number 123871; Calbiochem, La Jolla, CA) at 4 mg/mL. To potentiate agonistic anti-Fas antibodyeinduced apoptosis, cells were pretreated with the AKT inhibitor LY294002 (catalog number L9908; Sigma-Aldrich) at 50 mmol/L. All of these pretreated cells were then treated with anti-Fas CH11 or Jo2 at 2 mg/mL for an additional 4 hours. IgM (catalog number M079-3; MBL) was used as a control for anti-Fas CH11, and IgG (catalog number M075-3; MBL), for anti-Fas ZB4.
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