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7 protocols using mouse anti rabbit hrp

1

Cryogenic Preservation and Western Blot Analysis of Thoracic Aortic Tissue

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The thoracic aortic tissue was put into cryogenic vials, which were cryopreserved immediately in liquid nitrogen and stored at −80°C for use after completion of all sample collections.
The thoracic arteries (length 1.5  cm) were dissected and used to analyse the protein levels using Western blotting. Lysates (10–30 µg protein) were loaded onto 10% SDS-PAGE gels and blotted onto a polyvinylidene difluoride membrane. After being blocked with 5% powdered skim milk for 2 hours in phosphate-buffered saline containing 0.1% Tween 20 (PBST), the membranes were incubated with ABCA1 antibody (ab18180, Abcam, UK, 1:500), ABCG1 antibody (ab52617, Abcam, UK, 1:500) and LXRα antibody (ab41902, Abcam, UK, 1:500) overnight at 4°C, and then incubated with secondary antibody anti-rabbit/mouse-HRP (Santa Cruz Biotech, Santa Cruz, CA, 1:2000) for 1 hour at 37°C Image-Pro Plus 6.
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Western Blot Protein Analysis

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Total cell protein were electrophoresed in 10% SDS-PAGE gel and blotted onto a polyvinylidene difluoride membrane. After being blocked with 5% powdered skim milk for 2 h in phosphate-buffered saline containing 0.1% Tween 20 (PBST), the membranes were incubated with antibody (1∶500 diluted, Abcam, Cambridge, UK), overnight at 4°C, and then incubated with secondary antibody anti-rabbit/mouse-HRP (1∶2000 diluted, Santa Cruz Biotech, Santa Cruz, CA). GAPDH antibody (1∶200 diluted, Santa Cruz Biotech, Santa Cruz, CA) was used as a control. All bands were detected using ECL Western blotting kit (Amersham Biosciences, UK), according to the manufacturer's instruction.
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Western Blot Analysis of Regulatory Proteins

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Protein lysates from cell lines were analyzed by Western blot. Relevant primary antibodies against FOXC1 (Cell Signaling Technology - #8758), NFIX (Invitrogen - #PA5-31234), POU4F1 (Santa Cruz Biotechnology – sc-8429) were used to detect target genes and GAPDH (mouse αGAPDH – Abcam – ab8245; rabbit αGAPDH – Cell Signaling Technology – 2118L) was used as a housekeeping gene. Secondary antibodies mouse anti-rabbit HRP (Santa Cruz Biotechnology – sc-2054) and goat anti-mouse HRP (Jackson ImmunoResearch – 115-035-062) enabled detection and quantifications by densitometry using Imagelab software and a GelDoc imager.
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4

Western Blot Analysis of STING Pathway

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At 24 hours post-transfection, growth media was aspirated, cells were carefully washed with PBS, and subsequently lysed with Cell Extraction Buffer (Life Tech) with added Pierce protease and phosphatase inhibitors. The lysates were incubated on ice for 15 min followed by centrifugation for 5 min at ≥8000 rcf and 4 °C. LDS Sample Buffer was added to cell lysates at a final concentration of 1× followed by incubation at 100 °C for 5 min. The lysates were then subjected to SDS-PAGE on NuPAGE™ 4%–12% Bis-Tris precast Protein Gels (Invitrogen). Proteins were then transferred from SDS-PAGE gel to polyvinylidene fluoride membrane and detected using the following primary antibodies: rabbit anti-STING (1:2000; Cell Signaling), rabbit anti-TBK1 (1:1000; Cell Signaling), and rabbit anti-IRF3 (1:1000; Cell Signaling), rabbit anti-cGAS (1:2000; Millipore), mouse anti-HA.11 (1:3000, Biolegend), monoclonal SV40 T-antigen antibody (1:1000 dilution; Pab416, Santa Cruz Biotech). Secondary antibodies used: anti-mouse IgGκ HRP (1:3000, 1:5000 for anti-HA.11; Santa Cruz Biotech) and mouse anti-rabbit HRP (1:3000; Santa Cruz Biotech). SuperSignal™ West Femto Maximum Sensitivity Substrate (Thermo Scientific) was used to visualize proteins following secondary antibody incubation.
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5

Immunoblot Analysis of Cell Signaling

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Immunoblots were performed as described previously38 (link),77 (link). Briefly, cells were harvested and pellets were lysed and prepared via boiling for 15 min in 1X loading dye (50 mM Tris [pH 6.8], 100 mM DTT, 2% SDS, 0.1% bromophenol blue, 10% glycerol). Lysates were separated by SDS-PAGE on 10% Bis-Tris Plus Bolt gels (ThermoFisher) and transferred onto 0.45 µm nitrocellulose membrane. Membranes were blocked with 2% nonfat dry milk in 1X TBST (10 mM Tris [pH 8], 150 mM NaCl, 0.05% Tween-20), and detection of indicated proteins was carried out using the following antibodies: Aiolos (39293, Active Motif, 1:20,000), Bcl-6 (clone K112, BD Biosciences, 1:500), pSTAT5(Y694/9) (clone 47 BD Biosciences, 1:5000), STAT5 (clone (D206Y, Cell Signaling, 1:5000), β-Actin (GenScript, 1:15,000), Eomes (Abcam, 1:5,000) goat anti-mouse:HRP (Jackson Immunoresearch, 1:5,000-1:30,000), mouse anti-rabbit:HRP (Santa Cruz, 1:5000-1:20,000).
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6

Phosphorylation Analysis of Arabidopsis Proteins

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The kinase reactions, with and without SSPbP22, together with Arabidopsis total protein extracted in PEB protein extraction buffer, following the manufacturer's recommendations (Agrisera, Vännäs, Sweden), were immobilized on 0.2‐μm Immun‐Blot® PVDF Membrane (Bio‐Rad) using a 96‐well Bio‐Dot® (Bio‐Rad). Phosphorylated proteins were visualized using 1:1,000 polyclonal anti‐Phospho‐(Ser/Thr) antibody (Abcam), followed by mouse anti‐rabbit‐HRP (Santa Cruz Biotechnology). Blocking was performed with 5% skim milk (BD Difco, Mississauga, ON, Canada). The chemiluminescent signal from the horseradish peroxidase (HPR) was observed using SuperSignal™ West Pico PLUS Chemiluminescent Substrate (Thermo Fisher Scientific) through a ChemiDoc™ Imaging System (Bio‐Rad).
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7

Western Blot Analysis of Regulatory Proteins

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Protein lysates from cell lines were analyzed by Western blot. Relevant primary antibodies against FOXC1 (Cell Signaling Technology - #8758), NFIX (Invitrogen - #PA5-31234), POU4F1 (Santa Cruz Biotechnology – sc-8429) were used to detect target genes and GAPDH (mouse αGAPDH – Abcam – ab8245; rabbit αGAPDH – Cell Signaling Technology – 2118L) was used as a housekeeping gene. Secondary antibodies mouse anti-rabbit HRP (Santa Cruz Biotechnology – sc-2054) and goat anti-mouse HRP (Jackson ImmunoResearch – 115-035-062) enabled detection and quantifications by densitometry using Imagelab software and a GelDoc imager.
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