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5 protocols using ab15627

1

Multiparametric Immunofluorescence Staining

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Primary antibodies: rat anti-CD31 (DM3614P, Dianova, Hamburg, Germany), goat anti-CD32b (AF1460, R&D Systems, Minneapolis, MN, USA), goat anti-Lama4 (AF3837, R&D Systems, Minneapolis, MN, USA), rabbit anti-Desmin (ab32362, Abcam, Cambridge, UK), rabbit anti-CD3 (100202, Biolegend, San Diego, CA, USA), rat anti-CD4 (100402, Biolegend, San Diego, CA, USA), rat anti-CD8a (100802, Biolegend, San Diego, CA, USA), rabbit anti-F4/80 (30325S, Cell Signaling, Danvers, MA, USA), rat anti-CD11b (101202, Biolegend, San Diego, CA, USA), rabbit anti-CD11c (97585S, Cell Signaling, Danvers, MA, USA), rat anti-MHCII (14-5321-85, eBioscience, Thermo Fisher Scientific, Waltham, MA, USA), rabbit anti-FoxP3 (12653, Cell Signaling, Danvers, MA, USA), rabbit anti-CD45 (ab10558, abcam, Cambridge, UK), rat anti-Ly6C (ab15627, abcam, Cambridge, UK), rat anti-Gr1 (ab 25377, abcam, Cambridge, UK), goat anti-Reelin (AF3820, R&D Systems, Minneapolis, MN, USA), goat anti-Periostin (AF2955, R&D Systems, Minneapolis, MN, USA), rabbit anti-TGFBI (ab170874, abcam, Cambridge, UK). Secondary antibodies: donkey Alexa-Fluor 488, Alexa-Fluor 647, and Cy3-conjugated secondary antibodies were purchased from Dianova (Hamburg, Germany).
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2

Immunohistochemical Analysis of CETP in Mouse Liver

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Paraffin‐embedded sections of mouse liver (5 μm) were stained for F4/80 and human CETP (ab51771; 1/1000, Abcam) as described previously,10 Clec4f (MAB2784; 1/1000, R&D Systems), Vsig4 (AF4674; 1/1000, R&D Systems) and Ly6C (ab15627; 1/400, Abcam). For immunofluorescence staining, the secondary antibodies donkey anti‐rabbit Alexa488 (A21206; Invitrogen) and goat anti‐rat Alexa555 (A21434; Invitrogen) were used. Finally, tissue sections were mounted with VECTASHIELD® Mounting Medium with DAPI (Vector Laboratories). Positive cells were counted using a LeicaCTR5500 fluorescence microscope (Leica Microsystems GmbH). Representative pictures of immunostaining for CETP in liver sections of non‐CETP transgenic mice (APOE*3‐Leiden mice), APOE*3‐Leiden.CETP transgenic mice, and a healthy human donor are shown in Figure S1.
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3

Immunohistochemical Analysis of Liver Markers

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Liver sections were incubated with primary antibodies, followed by incubation with biotinylated secondary antibodies. The following primary antibodies were used: anti-STK25 (YSK1; sc-6865; Santa Cruz Biotechnology, Santa Cruz, CA), anti-PCNA (MA5-1158; Invitrogen), anti-Ki67 (14-5698-82; Invitrogen), anti-Gr1 (Ly6C) (ab15627; Abcam, Cambridge, UK), anti-F4/80 (MCA497GA; Bio-Rad, Hercules, CA), anti–collagen I (SAB4500362; Sigma-Aldrich), anti–α-smooth muscle actin (ab5694; Abcam), anti–4-HNE (sc-130083; Santa Cruz Biotechnology), anti-PEX5 (PA5-58716; Invitrogen), and anti-ubiquitin (ab411; Abcam). For immunohistochemical detection, anti-goat IgG (E0466; Dako, Glostrup, Denmark) and anti-mouse IgG (E0464; Dako) secondary antibodies were used, followed by horseradish-peroxidase–conjugated streptavidin (P0397; Dako) and diaminobenzidine staining (K3467; Dako). For immunofluorescence detection, Alexa Fluor-594–labeled goat anti-rat IgG (A11007; Invitrogen), Alexa Fluor-488–labeled rabbit anti-mouse IgG (A11059; Invitrogen), Alexa Fluor-594–labeled donkey anti-goat IgG (A11058; Invitrogen), and Alexa Fluor-594–labeled donkey anti-rabbit IgG (A21207; Invitrogen) secondary antibodies were used. The stained area was quantified in 5 randomly selected microscopic fields (×200) per mouse using ImageJ software.
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4

Immunophenotyping of Liver Cells

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Frozen liver sections were washed and fixed with ice cold methanol for 10 min. Next, the cells were washed, permeabilized (0.1% Tween-20 in PBS, 30 min), blocked for 1 h with 1% BSA-PBS and incubated at 4 °C with mouse monoclonal rabbit anti-CHI3L1 (ab180569, 1:100, Abcam), mouse anti-F4/80 (Cat 123,106, 1:100, BioLegend) and anti-Ly6C (ab15627, 1:100, Abcam), and goat anti-CLEC4F (AF2784, 1:100, R&D Systems) antibodies diluted in Dako Antibody Diluent. After overnight incubation, cells were washed and treated with Alexa Fluor 488 goat anti-rabbit (1:1000; Invitrogen), Alexa Fluor 594 goat anti-mouse (1:1000), Alexa Fluor 488 donkey anti-goat (1:1000) or Alexa Fluor 594 donkey anti rabbit (1:1000) for 1 h at RT in the dark, followed by washing and 5 min of nuclei staining with DAPI diluted at 1:1000 in PBS.
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5

Immunohistochemical Staining of Mouse Tissues

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Mouse tissues were fixed in 10% formalin and embedded in paraffin before prepared into 4-µm sections. Upon deparaffinization in xylene and rehydration through a series of diluted alcohol, tissue sections underwent antigen retrieval in boiled 10 mM citrate buffer (pH 6.0) for 10 min. After blocking endogenous peroxidase activity with 0.3% H2O2 in PBS for 10 min and non-specific binding with 5% normal goat serum for 1 h at room temperature, the tissue sections were incubated with either anti-F4/80 (ab111101, Abcam, Cambridge, MA, USA) or anti-Ly6c (ab15627, Abcam) antibody at 4 °C overnight. Following the incubation with biotinylated secondary antibody at room temperature for 30 min, the target signal was amplified using Vectastain ABC-HRP solution (Vector Labs, Burlingame, CA, USA) according to the manufacturer’s instructions and detected using Diaminobenzidine (DAB) substrate (Vector Labs).
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