Mouse MMP-9 Antibody

MMP-9 in Rat Brain.

MMP-9 was detected in perfusion fixed frozen sections of rat brain (cingulate cortex) using 1.7 µg/mL Goat Anti-Mouse MMP-9 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF909) overnight at 4 °C. Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.

Detection of Mouse MMP-9 by Immunohistochemistry

Remodeled ECM enhances the invasive behaviors of ovarian cancer cells. (a) H&E stain of the tumor lesions from WT and ApoE−/− mice at two weeks post ID8 engraftment (left). Graph represents the mean size of the lesions calculated from ten random fields (right). (b) Masson’s Trichrome stain of tumor lesions (left). The mean percentage of positive regions in ten random fields was calculated (right). (c) The cytokines/chemokines profile in the supernatants of ascites from WT and ApoE−/− mice. Four groups of mouse cytokine dot-blot arrays are shown. Dot-blots with significant changes are shown in boxed areas (red). (d) The top four pathways enriched among the molecules with significant changes using KEGG pathway analysis. (e) MMP-10 and MMP-9 protein expression in tumor lesions, determined by blinded IHC analysis (left). Box plot of the IHC score of MMP-10 and MMP-9 (right). Box represents the 25th–75th percentile while whiskers indicate the 5th–95th percentile. The black box represents tumor lesions from WT mice and the grey box represents tumor lesions from ApoE−/− mice. Each experiment included data from 5 mice. Bar represents 50 μm. *P < 0.05; **P < 0.005 Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/29458390), licensed under a CC-BY license. Not internally tested by R&D Systems.

Detection of Mouse MMP-9 by Immunohistochemistry

Remodeled ECM promotes malignancy of ovarian cancer via FAK-ERK-MMP activation. (a) Specimens from Fig. 5D were immunoassayed for p-FAKY397 (red), and nuclei were stained with Hoechst (blue). (b) IHC of active ERK (p-p44/42 MAPKThr202/Tyr204) in tumor lesions from WT and ApoE−/− mice with PBS or BAPN treatment two weeks after ID8 engraftment. (c) PBS or PD-325901 was administrated to ApoE−/− mice once ID8-Luciferase cells were intraperitoneally injected and treatment continued for one month. The representative images (top) and quantification data (bottom) of MMP-9 protein expression in tumor lesions two months after ID8 engraftment. (d) In vivo luciferase expression was determined two weeks or two months post treatment. Luminescence (right panel) is represented as the radiance (p/s/cm2/sr). Each experiment included data from 4 mice. Bar represents 50 μm. *P < 0.05; **P < 0.005 Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/29458390), licensed under a CC-BY license. Not internally tested by R&D Systems.

Detection of Mouse MMP-9 by Western Blot

Fibrotic deposit and cardiac dysfunction correlate with decreasing CVPC presence in mdx heart. (A) Representative images of histological analysis stained using Masson trichrome technique showing myocytes (in red) and collagenous fibrotic tissue (in blue) in the left ventricle of WT and mdx hearts at 9, 24, and 52 wo. Line represents 100 µm. (B) The ratio of red and blue stained tissue was evaluated in WT hearts (open bars and black dots, n = 4–11 slices/3 animals per group) and mdx hearts (black bars and grey dots, n = 3–16 slices/3 animals per group) at the age of 24 wo and further at 52 wo. Statistical significance was calculated by Kruskal–Wallis test and Dunn‘s multiple comparison post-hoc test (*** p < 0.001, **** p < 0.0001). (C) Western blot analysis of collagen proteins and inflammatory proteins in the cardiac tissues. Left panel shows representative images of collagen 1A1 (Coll 1A1), collagen 3 (Coll 3), cyclooxygenase 2 (COX-2), and matrix metalloproteinase 9 (MMP-9) compared to the GAPDH control. The right panels show the normalized densitometry of each protein normalized by GAPDH content of WT (open bars, n = 2 animals) and mdx (black bars, n = 2 animals). Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/34068508), licensed under a CC-BY license. Not internally tested by R&D Systems.

Detection of Mouse MMP-9 by Immunocytochemistry/Immunofluorescence

MMP2, MMP9, and RANKL expression in AAAs.A. Immunohistochemical staining for indicated proteins of serial sections of aortas one week after CaCl2 treatment. Elastic van Gieson staining is also shown. SM alpha-actin and F4/80 were stained to locate SMCs and macrophages, respectively. Shown are representative images of 4 or more samples in each group. Scale bars, 50 µm. B. Relative positive staining area of MMP2, MMP9, and RANKL in sections from control diet and EPA diet groups. n = 4–5. *P<0.05. Image collected and cropped by CiteAb from the following publication (https://dx.plos.org/10.1371/journal.pone.0096286), licensed under a CC-BY license. Not internally tested by R&D Systems.

Detection of Mouse MMP-9 by Immunohistochemistry

BAPN treatment delays ovarian cancer progression by reducing adhesions. (a) Experimental design: PBS or BAPN was intraperitoneally administrated to 20-weeks-old female ApoE−/− mice each day and continued for four weeks. A cohort of mice was sacrificed for further experiments. For the remaining mice, the drug treatment was stopped for two weeks before the establishment of ID8 allografts. (b) Hydroxyproline was measured in the plasma and diaphragm. (c) Masson’s Trichrome stain after BAPN treatment (left). The positive-staining percentage of 10 random fields was calculated (right). Bar represents 50 μm. (d) Cells adhesive to the omentum were analyzed four hours after ID8 intraperitoneal injection by fluorescence microscopy (left). The adhesive cells were determined from the total fluorescent intensity after digestion (right). Bar represents 200 μm. (e) In vivo luciferase measured at two weeks (top) and two months (bottom) post establishment in ApoE−/− mice with PBS or BAPN pre-treatment. Quantification of luminescence is represented as the radiance. (f) MMP-9 expression measured by IHC in tumor lesions of ApoE−/− mice with PBS or BAPN treatment. Each experiment includes data from 4 mice. Bar represents 50 μm. *P < 0.05; **P < 0.005 Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/29458390), licensed under a CC-BY license. Not internally tested by R&D Systems.

Detection of MMP-9 in Mouse Thymus.

MMP-9 was detected in immersion fixed paraffin-embedded sections of mouse thymus using Goat Anti-Mouse MMP-9 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF909) at 1.7 µg/ml for 1 hour at room temperature followed by incubation with the Anti-Goat IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC004). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using VisUCyte Antigen Retrieval Reagent-Basic (Catalog # VCTS021). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to the cytoplasm and macrophages. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.