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3 protocols using cd11b v450 m1 70

1

Isolation and Characterization of Lung Macrophages

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Mouse lung tissue was digested with collagenase-dispase (sigma-Aldrich) to generate a single cell suspension as previously described 50 . Cells were then stained with the following antibodies: Anti-F4/80-FITC (BM8, Abcam), CCR2-PE (475301, R&D System), Ly-6C-APC (HK1.4, eBiosciences), CD11b-V450 (M1/70, BD Biosciences). CD11b+ and Ly6Chi cells were gated within the F4/80+ subpopulation, and from these, CCR2+ cells were sorted as previously described 50 . Characterization of exosomes markers was performed as described previously 8 (link), 17 (link). Aldehyde/sulfate latex beads (Life Technology) were coupled with 30ug of exosomes, stained with FITC-conjugated anti-CD63 (H5C6, BD Pharmingen) and analyzed by FACS. Macrophages co-incubated with OFP-mitochondria labeled MSCs were incubated with anti-F4/80+ and double positive F4/80+/RFP cells sorted by FACS. Analysis was performed using a FACS Canto II (BD Biosciences) and data analyzed using FlowJo v7.6.3 software.
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2

In Vivo Immunotherapy Combination Protocol

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CpG 1826 was purchased from Integrated DNA Technologies. OX40 antibody [Anti-OX40 (CD134) antibody, rat immunoglobulin G1, OX86 clone, European Collection of Cell Cultures] was harvested and isolated from the ascites of immunodeficient mice, as previously described (33 (link)). CpG (50 µg) and/or OX40 (4 µg, 20 µg, or 100 µg) were injected IT with a 29 ½ gauge insulin syringe in 60 µL PBS every other day for three total doses (days 0, 2, 4 or days 5, 7, 9 depending on the experiment).
The following antibodies were used for flow cytometry analysis: anti-CD16/32 (93), CD45 BV510 (30-F11), CD45 FITC (30-F11), CD3 PE-Cy5 (145-2C11), CD4 BV785 (GK1.5), CD19 PE-Cy5 (6D5), CD19 APC (6D5), CD19 BV421 (6D5), Ly6G Alexa647 (1A8), IFNγ PE-Cy7 (XMG1.2), and OX40 PE (OX-86) all from BioLegend; CD8 APC-R700 (53-6.7), CD25 BB515 (PC61), NK1.1 PE-CF594 (PK136), Ly6C BV605 (AL-21), and CD11b V450 (M1/70) all from BD Biosciences; FoxP3/Transcription Factor Staining Buffer Set and FoxP3 PE-Cy7 (FJK-16s) from eBioscience. GhostRed780 Viability Dye (Tonbo Biosciences) was used for live/dead staining.
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3

Flow Cytometry Analysis of Lung Macrophages

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Mouse lung tissue was digested with collagenase-dispase (Sigma-Aldrich) to generate a single-cell suspension as previously described50 . Cells were then stained with the following antibodies: Anti-F4/80-FITC (BM8, Abcam), CCR2-PE (475301, R&D System), Ly-6C-APC (HK1.4, eBiosciences) and CD11b-V450 (M1/70, BD Biosciences). CD11b+ and Ly6Chi cells were gated within the F4/80+ subpopulation, and from these CCR2+ cells were sorted as previously described50 . Characterization of exosomes markers was performed as described previously8 (link)17 (link). Aldehyde/sulfate latex beads (Life Technology) were coupled with 30 μg of exosomes, stained with fluorescein isothiocyanate -conjugated anti-CD63 (H5C6, BD Pharmingen) and analysed using FACS. Macrophages co-incubated with Orange Fluorescent Protein (OFP)-mitochondria-labelled MSCs were incubated with anti-F4/80+ and double-positive F4/80+/RFP cells sorted using FACS. Analysis was performed using a FACS Canto II (BD Biosciences) and data analysed using the FlowJo v7.6.3 software.
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