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4 protocols using cd11b apc vio770

1

Comprehensive Immunophenotypic Analysis by Flow Cytometry

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All flow cytometric analyses were conducting using a Becton Dickinson fluorescence-activated cell sorter (FACS) LSRII and analyzed using FloJo software as previously described.9 (link), 35 (link) JAM-1 surface levels were assessed using an anti-human or anti-mouse JAM-1 antibody (BD Biosciences Pharmingen) as compared to their respective isotype controls. The relative mean fluorescence intensity (MFI) was used to determine JAM-1 receptor surface levels. Cellular apoptosis was assessed using Annexin V-450 and propidium iodide staining (BD Biosciences Pharmingen) in accordance with the manufacturer’s instructions. The percentage of dead cells was quantified using a Live/Dead Fixable Dead Cell Stain Kit (Invitrogen) per the manufacturer’s instructions. The following antibodies were utilized for immune cell phenotypic analysis: CD49b-V450, F4/80-BV421, CD8-V450, CD44-PeCy7, CD62L-allophycocyanin (APC)-Cy7, CD11c-APC-Cy7, CD80-V450 (BD Biosciences Pharmingen), CD335-APC, CD11b-APC-Vio770, Gr1-APC, CD3-APC, CD4-fluorescein isothiocyanate (FITC), and major histocompatibility complex class II (MHCII)-FITC (Miltenyi Biotec).
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2

Isolation and identification of microglia and astrocytes

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Microglia or astrocyte cultures were washed in sterile PBS, before scraping and gentle dissociation by pipetting. Cells were resuspended in FACS buffer (1% BSA/PBS) containing Fc Block (1 μg/mL). Cells were stained for CD11b‐APCVio770 and GLAST‐PE (Miltenyi Biotech, UK) for 30 min at 4°C. Cells were washed three times and resuspended in FACS buffer. Flow cytometeric data was collected using a FACSCanto II (BD Biosciences) cell analyzer. Microglia were identified by expression of CD11b and astrocytes by GLAST expression. Flow cytometeric analysis was carried out using FLOWJO version 7.6.5.
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Multicolor Flow Cytometry of Immune Cells

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Antibody reagents were obtained from Miltenyi Biotech: REA clones of antimouse CD3-APC-Vio770 (REA606), CD4-Vioblue (REA 604), CD8a-PE-Vio770 (REA 601), Foxp3-Vio515 (REA 788), NKp46-APC (REA 815), CD11c-PE (REA 754), CD11b-APC-Vio770 (REA 592), Ly6C-Vioblue (REA 796), Ly6G-PE-Vio770 (REA 526). Foxp3 staining was performed using Foxp3 Staining Buffer Set (Miltenyi Biotech).
Flow cytometry analysis was performed using a Miltenyi 8-color MACSQuant, and data were analyzed using Flowlogic (Miltenyi Biotech).
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Isolation of Murine Cardiac Myeloid Cells

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LV tissue excised from day 0 and day 1 post-MI mice was minced and digested with 600 U/ml collagenase II (Worthington, LS004177, Lot 47E17554B) and 60 U/ml DNase I in Hanks buffered saline solution and filtered through a 30-µm separation filter to generate single-cell suspensions. Red blood cells were lysed (Red Blood Cell Lysis Solution, Miltenyi 130-094-183) and non-specific interactions were blocked with FcR Blocking Reagent (Miltenyi 130-092-575). Cells were stained with the following fluorophore-conjugated antibody panels: CD45-FITC (Miltenyi 130-110-658), CD11b-APC-Vio770® (Miltenyi 130-109-288), F4/80-PerCP-Vio700 (Miltenyi 130-102-161), Ly6C-VioBlue® (Miltenyi 130-111-921), and Ly6G-APC (Miltenyi 130-107-914). Samples were quantified using the MACSQuant Analyzer 10 (Miltenyi). Cell populations were gated on live singlets, with cells from monocyte-derived/macrophage lineage classified as CD45+CD11b+Ly6G cells.
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