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5 protocols using cd115 clone afs98

1

Multicolor Flow Cytometry Immunophenotyping

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For flow cytometry or cell sorting, cells were transferred to 15-mL tubes and washed in cold buffer (2% FCS, 2 mM EDTA in PBS). Before antibody labeling, cells were incubated with Fc-Block (1:200, anti-CD16/32 antibody; 2.4G2, BD Pharmingen) for 10 min at 4°C and washed. Cells were stained in buffer with (1:100) fluorescently labeled antibodies against CD11b (clone M1/70, BD Pharmingen), CD11c (clone N418, Biolegend), CD115 (clone AFS98, eBioscience), CD19 (clone 1D3, BD Pharmingen), and Ly-6G (1A8, Biolegend) for 30 min at 4°C in the dark. 7-AAD (BD Pharmingen) was added before measurement to exclude dead cells. Analysis was performed on LSRFortessa and sorting on FACSAria II or III (BD Pharmingen). Unstained, empty vector-transduced cells or fluorescence-minus-one staining setups served as controls.
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2

Isolation and Characterization of Microglia

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Mice were deeply anesthetized with a lethal dose of choral hydrate and transcardially perfused with 0.1 M PBS. Brain was removed and one forebrain hemisphere (without olfactory bulb) was minced, incubated in phenol-red free DMEM supplemented with 2% heat inactivated FBS, 10mM HEPES and Collagenase type IV (0.4 mg/mL) for 15 min and then passed through a 19G blunt syringe to obtain a homogeneous cell suspension. Mononuclear cells were separated with a 40% Percoll gradient. Isolated cells were surface stained in FACS buffer for 20–30 min on ice with the following antibodies: CD11b (clone M1/70, eBioscience), F4/80 (clone CI: A3-1, BioRad), CD45 (clone 30F11, eBioscience), MHC II (clone M5/114.15.2, eBioscience), CD3e (clone 145-2C11, Biolegend), Gr-1 (clone RB6–8C5, Biolegend), CD115 (clone AFS98, eBioscience). Multiparameter analysis was performed on a LSR II Fortessa (BD) and analyzed with FlowJo software (Tree Star) (Details are included in the Flow Cytometry Reporting Summary). Dead cells and doublets were excluded from all analysis.
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3

Isolation and Characterization of Microglia

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Mice were deeply anesthetized with a lethal dose of choral hydrate and transcardially perfused with 0.1 M PBS. Brain was removed and one forebrain hemisphere (without olfactory bulb) was minced, incubated in phenol-red free DMEM supplemented with 2% heat inactivated FBS, 10mM HEPES and Collagenase type IV (0.4 mg/mL) for 15 min and then passed through a 19G blunt syringe to obtain a homogeneous cell suspension. Mononuclear cells were separated with a 40% Percoll gradient. Isolated cells were surface stained in FACS buffer for 20–30 min on ice with the following antibodies: CD11b (clone M1/70, eBioscience), F4/80 (clone CI: A3-1, BioRad), CD45 (clone 30F11, eBioscience), MHC II (clone M5/114.15.2, eBioscience), CD3e (clone 145-2C11, Biolegend), Gr-1 (clone RB6–8C5, Biolegend), CD115 (clone AFS98, eBioscience). Multiparameter analysis was performed on a LSR II Fortessa (BD) and analyzed with FlowJo software (Tree Star) (Details are included in the Flow Cytometry Reporting Summary). Dead cells and doublets were excluded from all analysis.
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4

Dissection and Flow Cytometric Analysis of Immune Cells

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Whole blood was collected via cardiac puncture from euthanized animals. Red blood cells were lysed using ACK lysis buffer (Fisher, Cat#A1049201), and then the remaining cells were stained with fluorochrome-conjugated antibodies. Skin tissues were digested as described in the protocol above. Single cell suspensions were stained with fluorochrome-conjugated antibodies. Data were analyzed by FlowJo v10.8 (DB Life Sciences). The following antibodies and dyes were used: CD45 (clone 30-F11; BD Biosciences Cat# 564279), CD11b (clone M1/70; Thermo Fisher Scientific Cat# 45–0112-80), CD115 (clone AFS98; Thermo Fisher Scientific Cat# 12–1152-81), Ly6C (clone HK1.4; Thermo Fisher Scientific Cat# 47–5932-80), Ly6G (clone 1A8, BD Biosciences Cat# 565369), F4/80 (clone BM8, Thermo Fisher Scientific Cat# 17–4801-80), Live/Dead Aqua or Violet fixable stains (Life: L34964, NC0180395).
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5

Immune cell isolation and analysis

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Graft tissue was digested and single-cell suspensions were prepared as previously reported (6 (link)). Following red blood cell lysis, cells were stained with fluorochrome-labeled antibodies against CD45.2 (clone 104; Biolegend), CD45.1 (clone A20; Biolegend), Ly6G (clone 1A8; Thermo Fisher Scientific), CD11b (clone M1/70; Thermo Fisher Scientific), Ly6C (clone HK1.4; Thermo Fisher Scientific), CD115 (clone AFS98; Thermo Fisher Scientific), and isotype control antibodies (BD Biosciences; BioLegend). Data were acquired on an Attune NxT Acoustic Focusing Cytometer (Thermo Fisher Scientific) and analyzed with FlowJo v10 software.
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