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5 protocols using fc block anti mouse cd16 32 mab

1

Multiparametric Flow Cytometry of Tumor-Infiltrating Immune Cells

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Single-cell suspensions of tumor-burdened lungs were re-suspended in FACS buffer (PBS, 1%BSA), blocked by non-specific staining with Fc block (anti-mouse CD16/32 mAb; BD Biosciences), The following antibodies were acquired from Biolegend and used in the flow cytometry analysis: BV605 anti-mouse CD45 (clone 30-F11), PE anti-mouse CD3 (clone 17A2), PE/Cy7 anti-mouse CD4 (clone RM4-5), BV711 anti-mouse CD8α (clone 53 − 6.7), BV421 anti-mouse Ly-6 C (clone HK1.4), PE anti-mouse Gr-1 (clone RB6-8C5), PE/Cy5 anti-mouse CD11b (clone M1/70), PE/Cy7 anti-mouse Ly-6G (clone 1A8), BV711 anti-mouse IFN-γ (clone XMG1.2), BV421 anti-mouse CD8α (clone 53 − 6.7), PE/Cy5 anti-mouse CD3 (clone 17A2). Flow cytometry data were acquired on a FACS Celesta flow cytometer and data was analysed with FlowJo V10.
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2

Multiparameter Flow Cytometry of Immune Cells

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Bone marrow cells were flushed from the femurs and tibias with PBS with a syringe. The spleen samples were processed through mechanical dissociation, and tumour tissues were processed into single-cell suspensions by dissociating the tissues enzymatically for 1 h with 1 mg/ml type I collagenase (Sigma-Aldrich) in the presence of 50 units/mL DNase (Sigma-Aldrich). The cells were lysed with red blood cell lysis buffer and filtered with a 100 μm membrane, further washed with 1% BSA in PBS and blocked by non-specific staining with Fc Block (anti-mouse CD16/32 mAb; BD Biosciences). The samples were then stained with fluorescence-conjugated antibodies against the surface markers CD45 (clone 30-F11, eBioscience), CD11b (clone M1/70, eBioscience), Ly6C (clone HK1.4, eBioscience), Ly6G (clone 1A8-Ly6g, eBioscience), CD3 (clone 145-2C11, eBioscience) and CD8 (clone 53–6.7, eBioscience) and detected using flow cytometry (LSR BD Fortessa).
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3

Multicolor Flow Cytometry Profiling

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The samples were washed with 1% bovine serum albumin (BSA) (Solarbio, Beijing, China) in PBS, blocked by non-specific staining with Fc block (anti-mouse CD16/32 mAb; BD Biosciences, Franklin Lakes, U.S.A), and stained with fluorescence-conjugated antibodies against surface markers CD45 (clone 30-F11), CD11b (clone M1/70), Gr-1 (clone 11-5931-81), Ly6G (clone 1A8-Ly6g), Ly6C(clone HK1.4), CD3 (clone 145-2C11), and CD8 (clone 53-6.7) (eBioscience, California, U.S.A) and detected by flow cytometry (BD LSRFortessa, Franklin Lakes, U.S.A).
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4

Tumor Immune Cell Characterization

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Tumors were digested with collagenase and hyaluronidase for 1 h at 37°C. After lysising of red blood cell, the dissociated cells were incubated on ice for 10 min, and then spun down at 300 g, 4°C for 7 min, cells from these tumors were either used for flow cytometry analysis or further processed and used for functional analyses. Tumor cell suspensions, were washed, blocked with Fc Block (anti-mouse CD16/32 mAb; BD Biosciences) at 4°C on ice for 15 min, and stained with fluorescence conjugated antibodies against surface markers CD49b, CD3E, CD8a, and CD25. These antibodies were purchased from BioLegend, eBioscience, or BD Biosciences. Cells were then fixed in Fixation/Permeabilization buffer (eBioscience) and stained with antibodies against intracellular proteins, including FoxP3 (BioLegend), granzyme B and interferon-γ (IFN-γ) (BD Pharmingen). Stained cells and isotype-control-stained cells, were assayed using a BD FACSVerse (BD Biosciences, United States). Data analysis was performed using the FlowJo (Tree Star) software.
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5

Multiparameter Flow Cytometry of Immune Cells

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Splenocytes, tumor cell suspensions, and peripheral blood cells were washed, blocked with Fc Block (anti-mouse CD16/32 mAb; BD Biosciences) at 4°C for 15 minutes, and stained with fluorescence conjugated antibodies against surface markers CD45(clone 30-F11), CD11b (clone M1/70), CD11c, Gr1 (clone RB6-8C5), Ly6C (clone AL-21), Ly6G (clone 1A8), F480 (clone BM8), I-Ab, I-Ad, CD8a (clone 53-6.7), CD4 (clone RM4-5) antibodies purchased from BioLegend, eBioscience or BD Biosciences. Cells were then fixed in Fixation/Permeabilization buffer (eBioscience) and stained with antibodies against intracellular proteins, including FoxP3 (NRRF-30) and Granzyme B (clone GB11). The antibodies were purchased from BD Biosciences, Biolegend, and R&D Systems and used in staining. Lineage antibody cocktail was purchased from eBioscience. Anti-mouse CCR2 antibody was purchased from R&D Systems, Inc. Stained cells and isotype-control-stained cells, were assayed using a LSRII, LSR4 or Fortessa flow cytometer (BD Biosciences). Data analysis was performed using the FlowJo (FlowJo LLC, Tree Star) and/or ModFit LT 4.1 software.
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