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Cancer Prevention Division, National Cancer Center Research Institute, Tokyo 104-0045, Japan [M. M., K. Wat., T. Kit., Y. S., M. T., T. Kaw., T. S., K. Wak.]; Minase Research Institute, Ono Pharmaceutical Co. Ltd., Osaka 618-8585, Japan [K. T., M. K., T. M., K. K., S. O.]; Department of Physiological Chemistry, Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8315, Japan [Y. S.]; and Department of Pharmacology, Faculty of Medicine, Kyoto University, Kyoto 606-8315, Japan [S. N.]
Accumulating evidence indicates that overproduction of prostanoids attributable to overexpression of cyclooxygenase-2 (COX-2) plays an important role in colon carcinogenesis. We have shown recently that the prostaglandin (PG) E receptor, EP1, but not EP3, is involved in mouse colon carcinogenesis. In line with our previous study, here we examined the role of prostanoid receptors in colon carcinogenesis using six additional lines of knockout mice deficient in prostanoid receptors EP2, EP4, DP, FP, IP, or TP. The animals were treated with the colon carcinogen, azoxymethane (AOM), and examined for the development of aberrant crypt foci (ACFs), putative preneoplastic lesions in the colon. Formation of ACFs was decreased only in the EP4-knockout mice, to 56% of the wild-type level. To confirm these results, we also examined the inhibitory effects of an EP4-selective antagonist, ONO-AE2-227, in the diet on the formation of AOM-induced colon ACFs in C57BL/6Cr mice and on the development of intestinal polyps in Min mice. ONO-AE2-227 at a dose of 400 ppm reduced the formation of ACFs to 67% of the control level, and intestinal polyp numbers in Min mice receiving 300 ppm were decreased to 69% of the control level. Plating efficiency assays showed that addition of 1.0 µM ONO-AE1-329, an EP4-selective agonist, resulted in a 1.8-fold increase in the colony number of the human colon cancer cell line, HCA-7, similar to the effect of PGE2. Moreover, EP4 mRNA expression was clearly observed in normal colon mucosa and colon tumors in mice. Our previous and present results indicate that PGE2 contributes to colon carcinogenesis through its actions mediated through EP1 and EP4 receptors; therefore, antagonists for these two receptors may be good candidates as chemopreventive agents against colon cancer.
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A. J. Dannenberg, S. M. Lippman, J. R. Mann, K. Subbaramaiah, and R. N. DuBois Cyclooxygenase-2 and Epidermal Growth Factor Receptor: Pharmacologic Targets for Chemoprevention J. Clin. Oncol., January 10, 2005; 23(2): 254 - 266. [Abstract] [Full Text] [PDF] |
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S. A. Blaine, A. M. Meyer, G. Hurteau, M. Wick, J. A. Hankin, R. C. Murphy, A. J. Dannenberg, M. W. Geraci, K. Subbaramaiah, and R. A. Nemenoff Targeted over-expression of mPGES-1 and elevated PGE2 production is not sufficient for lung tumorigenesis in mice Carcinogenesis, January 1, 2005; 26(1): 209 - 217. [Abstract] [Full Text] [PDF] |
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M. A. Hull, S. C.W. Ko, and G. Hawcroft Prostaglandin EP receptors: Targets for treatment and prevention of colorectal cancer? Mol. Cancer Ther., August 1, 2004; 3(8): 1031 - 1039. [Abstract] [Full Text] [PDF] |
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A. M. Meyer, L. D. Dwyer-Nield, G. J. Hurteau, R. L. Keith, E. O'Leary, M. You, J. V. Bonventre, R. A. Nemenoff, and A. M. Malkinson Decreased lung tumorigenesis in mice genetically deficient in cytosolic phospholipase A2 Carcinogenesis, August 1, 2004; 25(8): 1517 - 1524. [Abstract] [Full Text] [PDF] |
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A. Pozzi, X. Yan, I. Macias-Perez, S. Wei, A. N. Hata, R. M. Breyer, J. D. Morrow, and J. H. Capdevila Colon Carcinoma Cell Growth Is Associated with Prostaglandin E2/EP4 Receptor-evoked ERK Activation J. Biol. Chem., July 9, 2004; 279(28): 29797 - 29804. [Abstract] [Full Text] [PDF] |
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K. Subbaramaiah, K. Yoshimatsu, E. Scherl, K. M. Das, K. D. Glazier, D. Golijanin, R. A. Soslow, T. Tanabe, H. Naraba, and A. J. Dannenberg Microsomal Prostaglandin E Synthase-1 Is Overexpressed in Inflammatory Bowel Disease: EVIDENCE FOR INVOLVEMENT OF THE TRANSCRIPTION FACTOR Egr-1 J. Biol. Chem., March 26, 2004; 279(13): 12647 - 12658. [Abstract] [Full Text] [PDF] |
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D. Wang and R. N. DuBois Cyclooxygenase 2-derived prostaglandin E2 regulates the angiogenic switch PNAS, January 13, 2004; 101(2): 415 - 416. [Full Text] [PDF] |
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T J Jang, S K Min, J D Bae, K H Jung, J I Lee, J R Kim, and W S Ahn Expression of cyclooxygenase 2, microsomal prostaglandin E synthase 1, and EP receptors is increased in rat oesophageal squamous cell dysplasia and Barrett's metaplasia induced by duodenal contents reflux Gut, January 1, 2004; 53(1): 27 - 33. [Abstract] [Full Text] [PDF] |
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M. Murakami, K. Nakashima, D. Kamei, S. Masuda, Y. Ishikawa, T. Ishii, Y. Ohmiya, K. Watanabe, and I. Kudo Cellular Prostaglandin E2 Production by Membrane-bound Prostaglandin E Synthase-2 via Both Cyclooxygenases-1 and -2 J. Biol. Chem., September 26, 2003; 278(39): 37937 - 37947. [Abstract] [Full Text] [PDF] |
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H. Nishihara, S. Kizaka-Kondoh, P. A. Insel, and L. Eckmann Inhibition of apoptosis in normal and transformed intestinal epithelial cells by cAMP through induction of inhibitor of apoptosis protein (IAP)-2 PNAS, July 22, 2003; 100(15): 8921 - 8926. [Abstract] [Full Text] [PDF] |
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J. A. Arosh, S. K. Banu, P. Chapdelaine, V. Emond, J. J. Kim, L. A. MacLaren, and M. A. Fortier Molecular Cloning and Characterization of Bovine Prostaglandin E2 Receptors EP2 and EP4: Expression and Regulation in Endometrium and Myometrium during the Estrous Cycle and Early Pregnancy Endocrinology, July 1, 2003; 144(7): 3076 - 3091. [Abstract] [Full Text] [PDF] |
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D. Kamei, M. Murakami, Y. Nakatani, Y. Ishikawa, T. Ishii, and I. Kudo Potential Role of Microsomal Prostaglandin E Synthase-1 in Tumorigenesis J. Biol. Chem., May 23, 2003; 278(21): 19396 - 19405. [Abstract] [Full Text] [PDF] |
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D. E. Corpet and F. Pierre Point: From Animal Models to Prevention of Colon Cancer. Systematic Review of Chemoprevention in Min Mice and Choice of the Model System Cancer Epidemiol. Biomarkers Prev., May 1, 2003; 12(5): 391 - 400. [Abstract] [Full Text] [PDF] |
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H. Chung, D. Wu, R. Gay, S. N. Han, B. Goldin, R. Bronson, J. Mason, D. E. Smith, and S. N. Meydani Effect of Age on Susceptibility to Azoxymethane-Induced Colonic Aberrant Crypt Foci Formation in C57BL/6JNIA Mice J. Gerontol. A Biol. Sci. Med. Sci., May 1, 2003; 58(5): B400 - 405. [Abstract] [Full Text] [PDF] |
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T. Kawamori, N. Uchiya, T. Sugimura, and K. Wakabayashi Enhancement of colon carcinogenesis by prostaglandin E2 administration Carcinogenesis, May 1, 2003; 24(5): 985 - 990. [Abstract] [Full Text] [PDF] |
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H. Fujino, W. Xu, and J. W. Regan Prostaglandin E2 Induced Functional Expression of Early Growth Response Factor-1 by EP4, but Not EP2, Prostanoid Receptors via the Phosphatidylinositol 3-Kinase and Extracellular Signal-regulated Kinases J. Biol. Chem., March 28, 2003; 278(14): 12151 - 12156. [Abstract] [Full Text] [PDF] |
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W. Yu, N. R. Murray, C. Weems, L. Chen, H. Guo, R. Ethridge, J. D. Ceci, B. M. Evers, E. A. Thompson, and A. P. Fields Role of Cyclooxygenase 2 in Protein Kinase C beta II-mediated Colon Carcinogenesis J. Biol. Chem., March 21, 2003; 278(13): 11167 - 11174. [Abstract] [Full Text] [PDF] |
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M. Dong, K. Guda, P. R. Nambiar, A. Rezaie, G. S. Belinsky, G. Lambeau, C. Giardina, and D. W. Rosenberg Inverse association between phospholipase A2 and COX-2 expression during mouse colon tumorigenesis Carcinogenesis, February 1, 2003; 24(2): 307 - 315. [Abstract] [Full Text] [PDF] |
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M. Dohadwala, R. K. Batra, J. Luo, Y. Lin, K. Krysan, M. Pold, S. Sharma, and S. M. Dubinett Autocrine/Paracrine Prostaglandin E2 Production by Non-small Cell Lung Cancer Cells Regulates Matrix Metalloproteinase-2 and CD44 in Cyclooxygenase-2-dependent Invasion J. Biol. Chem., December 20, 2002; 277(52): 50828 - 50833. [Abstract] [Full Text] [PDF] |
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X. Chen, N. Li, S. Wang, J. Hong, M. Fang, J. Yousselfson, P. Yang, R. A. Newman, R. A. Lubet, and C. S. Yang Aberrant arachidonic acid metabolism in esophageal adenocarcinogenesis, and the effects of sulindac, nordihydroguaiaretic acid, and {alpha}-difluoromethylornithine on tumorigenesis in a rat surgical model Carcinogenesis, December 1, 2002; 23(12): 2095 - 2102. [Abstract] [Full Text] [PDF] |
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R. L. Konger, G. A. Scott, Y. Landt, J. H. Ladenson, and A. P. Pentland Loss of the EP2 Prostaglandin E2 Receptor in Immortalized Human Keratinocytes Results in Increased Invasiveness and Decreased Paxillin Expression Am. J. Pathol., December 1, 2002; 161(6): 2065 - 2078. [Abstract] [Full Text] [PDF] |
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