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2 protocols using mouse fc block clone 2.4g2

1

Cytokine Profiling of CNS-infiltrating T cells

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To assess cytokine production on T cells infiltrating the CNS, immunized mice were sacrificed at peak disease and mononuclear cells from brain tissues were isolated as previously described (Garcia et al., 2013 (link)). T cells were stimulated for 4 h at 37°C and 5% CO2 under the following conditions: cRMPI [RPMI 1640, Gibco; 10% Fetal bovine serum, Atlanta Biologicals; 1% Pen-Strep (Gibco), anti-CD3e (BioLegend), anti-CD28 (BD Pharmingen) and GolgiStop (BD Biosciences)]. For intracellular cytokine staining, the following reagents were used: Mouse Fc block (clone 2.4G2, BD Pharmingen); fixation/permeabilization buffer (Invitrogen); perm/wash buffer (BD Biosciences); cell staining buffer (BioLegend) and the following antibody cocktail: TCR-b V450 (clone H57-597, BD Horizon), CD4-APC-Cy7 (clone RM4-5, BioLegend), CD8a-PerCP/Cy5.5 (clone 53-6.7, BD Pharmingen), IL-17-PE (clone TC11-18H10.1, BioLegend) and IFN-γ-APC (clone XMG1.2, BioLegend) Samples were acquired using an ImageStreamX-Imaging Flow Cytometer-ISX-MKII (EMD Millipore) at the Cell Analysis Core, UTSA. Data analysis was performed using IDEAS software version 6.2.
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2

Multicolor Flow Cytometry Panel

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Cells were blocked with CD16/CD32 (Mouse Fc Block, Clone 2.4G2; BD Pharmingen, Franklin Lakes, NJ) for 15 minutes on ice, then incubated with antibodies to the proteins of interest (45 minutes, on ice). Antibodies were from eBiosciences (San Diego, CA): CD3‐PE (phycoerythrin) (clone 145‐2C11); CD4‐FITC (Clone GK1.5); CD8a‐eFluor450 (Clone 53‐6.7); CD11b‐allophycocyanin (APC)‐eFluor780 (Clone M1/70); CD11c‐APC (Clone N418); CD45R(B220)‐PE‐cyanin 7 (Clone RA3‐6B2); and major histocompatibility complex (MHC) class II (I‐A/I‐E)‐APC (Clone M5/114.15.2). Staining for FcγRI expression was done using CD64‐PE (Clone 290322) from R&D Systems (Minneapolis, MN). Unstained cells were used to establish flow cytometer settings. Single‐color positive controls were used for compensation. Flow cytometric data were acquired on a FacsCalibur (Becton and Dickenson, Franklin Lakes, NJ) using FlowJo. The data were analyzed with FlowJo Software (Tree Star, Ashland, OR).
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