primary antibody against timp2 (R&D Systems)
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Primary Antibody Against Timp2, supplied by R&D Systems, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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1) Product Images from "EZH2-mediated epigenetic silencing of TIMP2 promotes ovarian cancer migration and invasion"
Article Title: EZH2-mediated epigenetic silencing of TIMP2 promotes ovarian cancer migration and invasion
Journal: Scientific Reports
doi: 10.1038/s41598-017-03362-z
Figure Legend Snippet: EZH2 inversely correlates with TIMP2 and indicates poor prognosis. ( a ) Representative images of immunohistochemistry analysis of EZH2 and TIMP2 in ovarian cancer tissues. EZH2 was expressed in the nucleus, while TIMP2 was expressed in the cytoplasm. Sample No. 174 has high EZH2 expression and low TIMP2 expression. Sample No. 338 has low EZH2 expression and high TIMP2 expression (scale bar, 50 μm). ( b ) Negative correlation between the percentage of EZH2-positive cells and the TIMP2 staining score in ovarian cancer tissues (Spearman’s correlation test). ( c – e ) Kaplan-Meier plots for overall survival in epithelial ovarian cancer patients. High EZH2 ( c ), low TIMP2 ( d ) or high EZH2 and simultaneous low TIMP2 ( e ) are associated with reduced overall survival. ( f – h ) Kaplan-Meier plots for progression-free survival in patients with epithelial ovarian cancer stratified by the expression status of EZH2 ( f ), TIMP2 ( g ), or both EZH2 and TIMP2 ( h ).
Techniques Used: Immunohistochemistry, Expressing, Staining
Figure Legend Snippet: EZH2 regulates TIMP2 expression in vitro . ( a ) Western blot analysis of EZH2, TIMP2, MMP2, and MMP9 protein expression in ovarian cancer cell lines. Histone-3 (H3) and β-actin serve as internal controls. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( b ) EZH2 and TIMP2 mRNA expression levels in seven ovarian cancer cell lines were detected by quantitative real-time PCR. ( c ) Negative correlation between TIMP2 and EZH2 mRNA levels in ovarian cancer cell lines. ( d ) qRT-PCR for EZH2 and TIMP2 expression in A2780 and SKOV3 cells with EZH2 up- or down-regulation by transfection with an EZH2-overexpressing plasmid (EZH2) or targeting shRNA (shEZH2). ( e ) Western blot analysis of EZH2, TIMP2 and MMP2/9 protein expression in EZH2-regulated A2780 and SKOV3 cells. Histone-3 (H3) and β-actin are used as internal controls. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( f ) Immunocytochemical staining of EZH2 and TIMP2 in EZH2-regulated A2780 and SKOV3 cells (scale bar, 20 μm). ( g ) Gelatin zymography assays of MMP2 and MMP9 activity in EZH2-regulated A2780 and SKOV3 cells. The cropped gels are used in the figure, and full-length gels are presented in Supplementary Fig. . * P < 0.05; ** P < 0.01; *** P < 0.001.
Techniques Used: Expressing, In Vitro, Western Blot, Real-time Polymerase Chain Reaction, Quantitative RT-PCR, Transfection, Plasmid Preparation, shRNA, Staining, Zymography, Activity Assay
Figure Legend Snippet: EZH2 promotes ovarian cancer cell invasion and migration by repressing TIMP2. Cells were transfected with shEZH2, shEZH2 and siTIMP2; EZH2-plasmid, EZH2-plasmid and TIMP2-plasmid and corresponding controls. ( a ) Western blot analysis of EZH2 and TIMP2 in SKOV3 cells after co-transfection. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( b ) Scratch-wound assays for the detection of cell mobility (scale bar, 100 μm). ( c ) Histograms show the wound-healing areas of the scratch-wound assays. ( d ) Transwell migration and invasion assays. The number of invading and migrating cells is presented. ( e ) Representative images of migration and invasion assays (scale bar, 50 μm). * P < 0.05; ** P < 0.01; *** P < 0.001.
Techniques Used: Migration, Transfection, Plasmid Preparation, Western Blot, Cotransfection
Figure Legend Snippet: Down-regulation of EZH2 inhibits ovarian cancer metastasis by elevating TIMP2 in xenograft models. Nude mice were intraperitoneally inoculated with SKOV3 cells stably transfected with shNC or shEZH2. In vitro transient transfection and in vivo transfection of siTIMP2 was performed in one subgroup inoculated with SKOV3-shEZH2. ( a ) Peritoneal dissemination of xenografts. SKOV3-shEZH2 cells formed many fewer i.p. metastatic nodules (blue arrow) in the abdominal cavity of mice than SKOV3-shNC cells. In contrast, the transfection of siTIMP2 could significantly increase the reduced tumor metastatic nodules mediated by EZH2 depletion. ( b ) Representative images of the mesenteric membrane of six mice per group are shown. *Indicates tumor nodule. ( c ) The histogram of quantified weight of metastatic nodules >8 mm 3 and the number of metastatic nodules in three groups at the time of sacrifice are shown. ( d ) RT-PCR results of TIMP2 mRNA expression of the eighteen SKOV3 xenografts in three groups. ( e ) Western blot analysis of EZH2 and TIMP2 protein expression of the xenografts. Five tissues for each group are shown because one tissue in the shEZH2 group and one in the cotransfected group were too small for protein extraction. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( f ) The hematoxylin and eosin staining and immunohistochemical analysis of xenografts. EZH2 and TIMP2 protein expressions in control and intervention groups were verified. (scale bar, 20 μm). * P < 0.05; ** P < 0.01; *** P < 0.001.
Techniques Used: Stable Transfection, Transfection, In Vitro, In Vivo, Membrane, Reverse Transcription Polymerase Chain Reaction, Expressing, Western Blot, Protein Extraction, Staining, Immunohistochemical staining, Control
Figure Legend Snippet: EZH2 inhibits TIMP2 expression via DNA methylation. ( a ) qRT-PCR and ( b ) Western blot analysis of TIMP2 expression in A2780 and SKOV3 cells after treatment with 5Aza. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( c ) Methylation-specific PCR (MSP) analysis revealed that 5Aza treatment markedly decreased TIMP2 promoter methylation. The cropped gel is used in the figure, and the full-length gel is presented in Supplementary Fig. . M, methylated; U, unmethylated; IVD, in vitro methylated DNA; methylation index refers to the percentage of M/M + U. ( d ) qRT-PCR and ( e ) Western blot analysis of TIMP2 expression in A2780 and SKOV3 cells after DNMT1 and DNMT3A siRNA transfection. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( f ) MSP for DNA methylation status of the TIMP2 promoter in ovarian cancer cells after DNMT1 and DNMT3A siRNA transfection. The cropped gel is used in the figure, and the full-length gel is presented in Supplementary Fig. . ( g ) MSP for DNA methylation status of the TIMP2 promoter in the EZH2-regulated ovarian cancer cells. The cropped gels are used in the figure, and full-length gels are presented in Supplementary Fig. . ( h ) qRT-PCR and ( i ) Western blot analysis of TIMP2 expression in A2780 and SKOV3 cells after treatment with GSK126. The cropped blots are used in the figure, and full-length blots are presented in Supplementary Fig. . ( j ) MSP analysis of TIMP2 promoter methylation in A2780 and SKOV3 cells after treatment with GSK126. The cropped gels are used in the figure, and full-length gels are presented in Supplementary Fig. . * P < 0.05; ** P < 0.01; *** P < 0.001.
Techniques Used: Expressing, DNA Methylation Assay, Quantitative RT-PCR, Western Blot, Methylation, In Vitro, Transfection
Figure Legend Snippet: EZH2 recruits DNMTs at the TIMP2 promoter. ( a ) Location of binding sites of primers for MSP and qRT-PCR following ChIP in the context of CpG islands at the TIMP2 promoter. TSS, Transcription start site. ( b ) qRT-PCR analysis of immunoprecipitated chromatin by EZH2 and H3K27me3 antibodies. IgG served as a negative control. ( c ) A2780 and ( d ) OV2008 cells were transfected with EZH2 overexpression plasmid or control followed by ChIP and qRT–PCR for the quantitative detection of EZH2, H3K27me3, DNMT1 and DNMT3a on the TIMP2 promoter. The results were normalized to the input. * P < 0.05; ** P < 0.01; *** P < 0.001. NS, not significant.
Techniques Used: Binding Assay, Quantitative RT-PCR, Immunoprecipitation, Negative Control, Transfection, Over Expression, Plasmid Preparation, Control
Figure Legend Snippet: Inhibition of EZH2 converts histone modification mark occupancy at the TIMP2 promoter. ( a ) Western blot analysis of different histone modification marks in A2780 and SKOV3 cells after EZH2 knockdown or pharmacological inhibition by GSK126 treatment ( b ). The cropped blots are used in the figure, and full-length blots are presented in Supplementary Figs and . ( c ) ChIP analysis of different histone modification marks at the TIMP2 promoter in A2780 and SKOV3 cells. IgG served as a negative control. ( d , e ) ChIP analysis of different histone modification marks at the TIMP2 promoter in A2780 and SKOV3 cells treated by GSK126. ( f , g ) ChIP analysis of different histone modification marks in EZH2-knockdown A2780 and SKOV3 cells. The results were normalized to the input. The EZH2 target gene KLF2 was used as a positive control. * P < 0.05; ** P < 0.01; *** P < 0.001. NS, not significant.
Techniques Used: Inhibition, Modification, Western Blot, Knockdown, Negative Control, Positive Control
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![Relative expression of miR-200c, <t>ZEB1,</t> and ZEB2, in endometrial biopsies (A) from mid-late proliferative phase (MLP), early- (ES), mid- (MS), and late (LS)-secretory phase of the menstrual cycle and endometrial tissues (B) from proliferative (Pro) and secretory (Sec) phases of the menstrual cycle, peri- and postmenopausal period (PPM), women exposed to GnRH agonist (GnRHa) and Depo-Provera (Depo), and grade I, II, and III endometrial cancer (C). The results are presented as mean ± standard error of the mean (SEM) and analyzed using analysis of variance (ANOVA) or nonparametric student t test (*P < .05 as compared to levels in mid-late proliferative phase [MLP] in Figure A, proliferative phase [Pro] in Figure B and peri- and postmenopausal period [PPM] in Figure C).](https://pub-med-central-images-cdn.bioz.com/pub_med_central_ids_ending_with_6309/pmc04046309/pmc04046309__10.1177_1933719112438448-fig1.jpg)
