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14 protocols using cd68 fa 11

1

Purification and Immunophenotyping of BAL Cells

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BAL cells were purified by centrifugation on Percoll to remove surfactant and debris 31 (link). BAL cells or BMDMs were immunostained to detect CD115 (AFS98), F4/80 (BM8) (eBioscience), CD3 (145-2C11), CD11b (M1/70), CD11c HL3), CD16/32 (2.4G2), CD19 (1D3), CD64 (X54-5/7.1.1), CD131 (JORO50), Ly6G (1A8), CD45.1 (A20), CD45.2 (104), MHC class II (I-A/I-E) (M5/114.15.2), SiglecF (E50-2440) (BD Biosciences), CD14 (Sa14-2) (BioLegend), CD68 (FA-11) (AbD Serotec), and MerTK (108928) (R&D Systems), as previously described1 (link), evaluated by flow cytometry using a FACSCaliber or FACSCanto flow cytometers (both from BD Biosciences, San Jose, CA), and the results were analyzed using CellQuest, FACSDiva (BD Biosciences), or FlowJo software (Tree Star). For intracellular staining of CD68, Leucoperm (AbDSerotec) was used as directed by the manufacturer.
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2

Tissue Sectioning and Immunofluorescence Staining

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Tissue was embedded in optimal cutting temperature medium (TissueTec) and directly snap frozen in isopentane cooled by dry ice. The tissue was then cut into 8- or 14-µm sections by a cryostat and mounted on superfrost glass slides, which were dried for at least 1 h before storage at −70°C. Tissue sections were fixed and permeabilized with ice-cold acetone. The following antibodies were used: B220 (RA3-6B2; BioLegend), CD3 (pc; Abcam), CD68 (FA-11; AbD Serotec), CD103 (2E7; BioLegend), CD138 (281-2; BioLegend), F4/80 (BM8; AbD Serotec), IgG (STAR120F; AbD Serotec), Ly-6G (1A8; BioLegend), MARCO (ED31; AbD Serotec), MOMA1 (Abcam), and PNA (Vector). Tissue was mounted with Prolong Gold mountant (Invitrogen), and images were captured using a confocal scanning microscope (DMI6000; Leica Biosystems) connected to a True Confocal scanner (SP5; Leica Biosystems).
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3

Histological Analysis of Hepatic Inflammation

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Liver specimens (4μm), stained with hematoxylin and eosin (H&E), were analyzed blindly [21 (link), 22 (link)]. Primary mAb against mouse neutrophils (Ly-6G) (1A8; BD Biosciences, San Jose, CA) and macrophages (CD68) (FA-11; AbD Serotec, Raleigh, NC) were used. Labeled cells were counted in 10 high-power fields (HPF). Superoxide levels in hepatic tissue were detected with ROS-sensing dye dihydroethidium (DHE; AnaSpec, Fremont, CA).
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4

Multiparametric analysis of myeloid cell populations

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BMDM were blocked with anti-CD16/32 (2.4G2; UCSF Monoclonal Antibody Core), stained with antibodies to myeloid surface markers, and analyzed on an LSRII (BD Biosciences). Intracellular staining was performed after 4 h incubation (for BMDM) or 2 h incubation (for peritoneal macrophages) with GolgiPlug (BD) and monensin (eBioscience), using Cytofix/Cytoperm (BD) according to manufacturer protocols. Results were analyzed using FACSDiva (BD) and FlowJo (TreeStar) software. Antibodies to the following were used: Ly6C (clone HK1.4), CD11c (N418), IL-1β (NJTEN3), TNF (TN3-19), rat IgG1 isotype (eBRG1), all eBioscience; Ly6G (1A8), Biolegend; Ly6B.2 (7/4), Cedarlane; CD11b (M1/70), F4/80 (BM8), Gr-1 (RB6-8C5), all UCSF Monoclonal Antibody Core; and CD68 (FA-11), ABD Serotec. Myeloid populations were delineated as previously described (16 (link)): granulocytes (CD11b+ Ly6G+), eosinophils (CD11b+ Ly6cint SSChi), monocytes (CD11b+ F4/80int SSClo Ly6c as indicated), red pulp macrophages (F4/80hi CD11b), conventional DC (CD11chi), and plasmacytoid DC (CD11cint Siglec H+).
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5

Liver Macrophage Quantification Protocol

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Liver specimens (4μm), stained with hematoxylin/eosin (H&E) were analyzed blindly by modified Suzuki's criteria (16 (link)). Primary mAb against mouse macrophages CD68 (FA-11; AbD Serotec, Raleigh, NC) was used. Liver sections were evaluated blindly by counting labeled cells/10 HPF.
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6

Histopathological Assessment of Liver Injury

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Perfused livers were fixed with 4% paraformaldehyde for 24 hours and then embedded in paraffin. For detection of liver necrosis and apoptosis, formalin-fixed liver tissue sections were stained with hematoxylin and eosin (H&E) for evaluation of necrosis. For apoptosis detection, tissue sections were stained with terminal deoxynucleotidyl transferase (TdT)-mediated dUTP digoxigenin nick-end labeling (TUNEL) according to the manufacturer’s instructions (In situ cell death detection kit, POD, Roche). For immunohistochemical detection of infiltrating inflammatory cells, primary mAbs against mouse Ly-6G (1A8; BD Biosciences, San Jose, CA) and CD68 (FA-11; AbD Serotec, Raleigh, NC) were used on liver specimens, and positive cells were counted in 15 high power fields (HPF)/section for quantification of infiltrating immune cells.
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7

Liver Histology and Immunohistochemistry Protocol

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Liver histology and immunohistochemistry were performed as previously published.[14 (link), 15 (link)] Liver specimens embedded in paraffin were processed for hematoxylin and eosin (H&E) staining. Liver steatosis was assessed by Oil Red O staining. Immunohistochemistry was performed using CD3 (HIT3a), Ly-6G (1A8), and PECAM-1 (MEC13.3) from BD Biosciences, CD68 (FA-11, Serotec), MMP-9 (AF909; R&D Systems), vWF (A0082, DAKO), PCNA (PC10; Neomarkers) and pH3 (Ser10; Cell Signaling) antibodies at optimal dilutions. Dual/triple staining was detected by immunofluorescence with Alexa Fluor 594 (red) and Alexa Fluor 488 (green) labeled secondary antibodies (Molecular Probes). Alexa Fluor 488 phalloidin and Vectashield mounting media with DAPI (Vector Laboratories) were used for F-actin and nuclear staining, respectively. Sections were blindly evaluated by counting 10 high-powered fields (HPFs)/section in triplicate. The proliferation index is expressed as the percentage of PCNA, or pH3 stained hepatocytes per total number of hepatocytes.
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8

Purification and Immunophenotyping of BAL Cells

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BAL cells were purified by centrifugation on Percoll to remove surfactant and debris 31 (link). BAL cells or BMDMs were immunostained to detect CD115 (AFS98), F4/80 (BM8) (eBioscience), CD3 (145-2C11), CD11b (M1/70), CD11c HL3), CD16/32 (2.4G2), CD19 (1D3), CD64 (X54-5/7.1.1), CD131 (JORO50), Ly6G (1A8), CD45.1 (A20), CD45.2 (104), MHC class II (I-A/I-E) (M5/114.15.2), SiglecF (E50-2440) (BD Biosciences), CD14 (Sa14-2) (BioLegend), CD68 (FA-11) (AbD Serotec), and MerTK (108928) (R&D Systems), as previously described1 (link), evaluated by flow cytometry using a FACSCaliber or FACSCanto flow cytometers (both from BD Biosciences, San Jose, CA), and the results were analyzed using CellQuest, FACSDiva (BD Biosciences), or FlowJo software (Tree Star). For intracellular staining of CD68, Leucoperm (AbDSerotec) was used as directed by the manufacturer.
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9

Immunohistochemistry of Amyloid Beta in Hippocampus

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Brains were cut into 10 micron sections using a cryostat. A series of sections through the hippocampus was taken, and the site of injection was located by staining for CD11B; this allowed identification of the antibody-injected brain region to use for further immunohistochemistry. Immunohistochemistry was performed as described before [27 (link)] using CD11B (5C6, 1:500, Serotec), CD68 (FA11, 1:500, Serotec) and Aβ (3D6, 1:1000, in house), FITC sheep anti-mouse F(ab)2 (1:500, Sigma), horse anti-mouse biotinylated (1:250, Vector) and rabbit anti rat biotinylated (1:250, Vector).
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10

Immunohistochemical Analysis of Liver Macrophages

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Liver specimens were embedded in Tissue Tec OCT compound (Miles, Elkhart, IN) and snap frozen in liquid nitrogen and immunostaining performed on cryostat sections (0.5 µm) as described previously [19] (link). Appropriate rat primary antibodies against mouse macrophage antigen-1 (Mac-1; M1/70), CD68 (FA-11, Serotec), Ly-6G (1A8) (BD Biosciences, San Diego, CA), MMP-9 (AF909; R&D Systems, Minneapolis, MN) were used at optimal dilutions. Primary antibody was replaced with dilution buffer for negative controls. Bound primary antibodies were detected using biotinylated anti-rat IgG and streptavidin peroxidase–conjugated complexes (Vector Laboratories, Burlingame, CA). Sections from inflammatory tissues known to be positive for each stain were included as positive controls. Sections were evaluated blindly by counting 30 high-power fields per section.
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