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7 protocols using gb11130

1

Histological and Immunohistochemical Analysis of Aortic Tissue

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Formaldehyde-fixed paraffin sections were cut in cross section (5 μm) and then stained with hematoxylin and eosin (HE) for analysis of structural integrity, Verhoeff's Van Gieson (EVG) staining for corruption of elastin, and Mac-3 for infiltration of macrophages.
The severity of elastin degradation is semiquantified, as previously described (grade 1, no degradation; grade 2, mild degradation; grade 3, severe degradation; and grade 4, presence of aortic rupture) [12 (link)].
Briefly, the aortic sections were deparaffinized and hydrated in H2O and then incubated with primary antibodies against Mac-3 (1 : 100 dilution, BD, 550292), MCP-1 (1 : 500 dilution, Servicebio, G11199), VCAM-1 (1 : 200 dilution, Servicebio, G13336), MMP-2 (1 : 6000 dilution, Servicebio, GB11130), and MMP-9 (1 : 1000 dilution, Servicebio, GB11132) at 4°C overnight, followed by incubation with the corresponding secondary antibody for 1 h at 37°C. Then, the sections were dehydrated and images were obtained by a Nikon microscope equipped with a CCD camera. Immunostaining data of each section was randomly selected and measured by 2 different investigators in a blinded manner using the image analysis software (Image-Pro Plus, EPIX Vision).
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2

Quantifying Protein Expression Levels

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The GLUT1, FASN, and matrix metalloproteinase-2 (MMP2) expression levels were measured using Western blot analysis. Samples were lysed with a lysis buffer containing a protease inhibitor cocktail (G2006, Servicebio), and the protein concentrations were determined using a protein assay kit (G2006, Servicebio). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis was performed with 20 μg of protein in each sample using 4% to 15% Mini Protean TGX precast gels (Servicebio). The following primary antibodies were used: anti-GLUT1 (AB652, 1:1000, Abcam), anti-FASN (AB22759, 1:1000, Abcam), and anti-MMP2 (GB11130, 1:1000, Servicebio). The bands were detected using a Western blotting detection system (Epson, Japan) and band intensity was calculated via densitometry using AlphaEaseFC (Alpha Innotech, USA).
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3

Immunohistochemical Analysis of Liver Fibrosis

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Before immunostaining, paraffin-embedded sections were dewaxed and rehydrated in an alcohol series. The sections were washed with phosphate-buffered saline after heat-induced antigen retrieval. Next, the sections were treated with 3% hydrogen peroxide for 15 m to eliminate endogenous peroxidase activity and then incubated with 3% bovine serum albumin for 30 m at 37°C to block non-specific binding sites. Subsequently, sections were incubated overnight at 4°C with diluted primary antibodies, including α-SMA (1:2,000; GB13044; Servicebio, Inc. Wuhan, China), collagen I (1:1,200; GB11022-3; Servicebio, Inc.), matrix metalloproteinase (MMP)-2 (1:1,200; GB11130; Servicebio, Inc.), tissue inhibitors of metalloproteinase-1 (TIMP-1) (1:1,000; 106164-T40; Sino Biological US, Chesterbrook, PA, USA), TGF-β1 (1:500; GB11179; Servicebio, Inc.), and incubated with a conjugated secondary antibody after washing with phosphate-buffered saline (G0002; Servicebio, Inc.). Diaminobenzidine kits (G1211; Servicebio, Inc.) were used to visualize antibody binding areas. For each mouse, we analyzed three liver slices and randomly observed the positive-stained areas in three different fields of vision on each slice. The ratio of positive-stained to total area was calculated by Image-Pro Plus 6.0.
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4

Immunohistochemical Analysis of Cervical Tissues

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USL specimens were obtained from tissues extracted by hysterectomy. Samples (approximately 5 mm3 in size) were taken from the dorsal part of the cervix, 1 cm from the beginning of the cervix (at the left side), and verified by histological analysis.
Tissue samples were fixed in 10% neutral buffered formalin, embedded in paraffin, and treated with citric acid buffer (pH 6.0) in a microwave for antigen retrieval. Sections were then incubated in 3% hydrogen peroxide solution at room temperature in the dark for 25 min to inhibit endogenous peroxidases, then blocked in 3% bovine serum albumin at room temperature for 30 min. Reactions with primary antibodies against CD44 (dilution 1:100; GB13065), MMP-2 (dilution 1:500; GB11130), MMP-9 (dilution 1:500; GB11132-2), and TGF-β (dilution 1:100; GB13028) (all from Servicebio, Wuhan, China) were performed overnight at 4°C. After incubation with horseradish peroxidase-labeled secondary antibodies (Servicebio) at room temperature for 50 min, immune reactivity was detected with diaminobenzidine (K5007, DAKO, Wuhan, China); color development was observed under a microscope. Nuclei were counterstained with Harris hematoxylin. The percentages of positively stained areas were quantified using ImageJ software (version 1.8.0, National Institutes of Health, Bethesda, MD, USA).
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5

Comprehensive Immunohistochemical Profiling of Biomarkers

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Due to IHC and Wes-ProteinSimple, the following primary antibodies were used: primary rabbit polyclonal antibodies to Ki67 (GB111141, Servicebio), to CEACAM5 (DF6152, affinity), VEGFA (AF5131, affinity), VEGFC (DF7011, Affinity), Histone H3 (AF0863, affinity), ATP1A1 (AF6083, affinity), collagen type I (Proteintech, 14695-1-AP), MMP2 (GB11130, Servicebio), MMP9 (AF0220, Affinity), vimentin (AF7013, Affinity), TGF-β1 (AF7013, Affinity), E-cadherin (DF7157, Affinity), N-cadherin (AF5239, Affinity), rabbit monoclonal antibodies to TTF-1 (ab133737, abcam), to CD105 (ab221675, abcam) and mouse monoclonal antibodies to β-acting (sc47778, santa), to p63 (GB14129, Servicebio). Moreover, primary antibodies were used in combination with HRP-conjugated secondary antibodies (Jackson).
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6

Protein Expression Analysis Protocol

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The assays were performed as described previously [37 (link)]. Antibody recognizing KDELR2 (1:1000, DF4047) was obtained from Affinity Biosciences, China. Antibodies for KIF20A (1:1000, A15377) and β-Actin (1:10,000, AC004) were obtained from ABclonal. Antibodies for MMP2 (1:1000, GB11130) and MMP9 (1:1000, GB11132) were obtained from Servicebio, Wuhan, China.
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7

Immunohistochemical Analysis of Tissue Biomarkers

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Formalin-fixed and paraffin-embedded tissues were cut into serial sections with a thickness of 4 µm. Sections were stained with hematoxylin and eosin (HE) for histological examination.
The paraffin sections were deparaffinized and rehydrated. Then, the sections were placed in citrate buffer (pH 6.0) for 10 min and washed with phosphate-buffered saline. After blocking with 3% BSA solution for 30min at room temperature, the sections were incubated with CHI3L antibody 1 (1:200, ab77528, Abcam), MMP-2 antibody (1:400, GB11130, Servicebio, Wuhan, China) and VEGF-A antibody (1:300, GB14165, Servicebio, Wuhan, China) overnight at 4 °C. The sections were washed with PBS and then incubated with the secondary antibodies for 1h at room temperature. The sections were then stained with 3, 3′-diaminobenzidine tetrahydrochloride for 10 min and counterstained with hematoxylin, dehydrated and mounted. Light yellow or brownish-yellow particles in the cytoplasm or
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