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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kuwano, Michihiko Ureshino, Hiroki Shibata, Tomohiro Watari, Kosuke Abe, Hideyuki Izumi, Hiroto Kawahara, Akihiko Mukaida, Naofumi Ono, Mayumi Uba, Manami Murakami, Yuichi |
| Description | Author Affiliation: Murakami Y ( Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.) |
| Abstract | The expression of N-myc downstream-regulated gene 1 (NDRG1) was significantly correlated with tumor angiogenesis and malignant progression together with poor prognosis in gastric cancer. However, the underlying mechanism for the role of NDRG1 in the malignant progression of gastric cancer remains unknown. Here we examined whether and how NDRG1 could modulate tumor angiogenesis by human gastric cancer cells. We established NU/Cap12 and NU/Cap32 cells overexpressing NDRG1 in NUGC-3 cells, which show lower tumor angiogenesis in vivo. Compared with parental NU/Mock3, NU/Cap12, and NU/Cap32 cells: 1) induced higher tumor angiogenesis than NU/Mock3 cells accompanied by infiltration of tumor-associated macrophages in mouse dorsal air sac assay and Matrigel plug assay; 2) showed much higher expression of CXC chemokines, MMP-1, and the potent angiogenic factor VEGF-A; 3) increased the expression of the representative inflammatory cytokine, IL-1 ; 4) augmented JNK phosphorylation and nuclear expression of activator protein 1 (AP-1). Further analysis demonstrated that knockdown of AP-1 (Jun and/or Fos) resulted in down-regulation of the expression of VEGF-A, CXC chemokines, and MMP-1, and also suppressed expression of IL-1 in NDRG1-overexpressing cell lines. Treatment with IL-1 receptor antagonist (IL-1ra) resulted in down-regulation of JNK and c-Jun phosphorylation, and the expression of VEGF-A, CXC chemokines, and MMP-1 in NU/Cap12 and NU/Cap32 cells. Finally, administration of IL-1ra suppressed both tumor angiogenesis and infiltration of macrophages by NU/Cap12 in vivo. Together, activation of JNK/AP-1 thus seems to promote tumor angiogenesis in relationship to NDRG1-induced inflammatory stimuli by gastric cancer cells. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 35 |
| Volume Number | 288 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2013-08-30 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cell Cycle Proteins Metabolism Interleukin-1alpha Intracellular Signaling Peptides And Proteins MAP Kinase Kinase 4 Neovascularization, Pathologic Stomach Neoplasms Animals Genetics Cell Line, Tumor Chemokines, CXC Enzyme Activation Gene Expression Regulation, Neoplastic Inflammation Pathology Interleukin-4 Macrophages Matrix Metalloproteinase 1 Matrix Metalloproteinase 13 Mice Mice, Inbred BALB C Neoplasms, Experimental Phosphorylation Transcription Factor AP-1 Vascular Endothelial Growth Factor A Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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