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Kawamori T, Uchiya N, Nakatsugi S, Watanabe K, Ohuchida S, Yamamoto H, Maruyama T, Kondo K, Sugimura T, Wakabayashi K. Chemopreventive effects of ONO-8711, a selective prostaglandin E receptor EP(1) antagonist, on breast cancer development. Carcinogenesis 2001; 22:2001-4. [PMID: 11751431 DOI: 10.1093/carcin/22.12.2001] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Levels of prostaglandin E(2) (PGE(2)) in human and rodent breast cancers are higher than surrounding normal tissues. PGE(2) exhibits biological activity through binding to membrane receptors, EP(1-4). The present study was designed to investigate the effects of ONO-8711, a newly synthesized selective PGE receptor EP(1) antagonist, on 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)-induced breast cancer development. Starting at 7 weeks of age, female Sprague-Dawley (SD) rats were given PhIP (85 mg/kg body weight) by gavage four times weekly for two weeks. Dietary administration of ONO-8711 at 400 or 800 p.p.m. delayed occurrence of breast tumors for 2 or 4 weeks, respectively. At 20 weeks after the last dosing of PhIP, all animals were killed and complete autopsy was made. All breast tumors were diagnosed as invasive ductal adenocarcinomas histopathologically. Administration of ONO-8711 at 800 p.p.m. significantly decreased PhIP-induced breast cancer incidence, multiplicity and volume compared with those of rats fed the control diet (56% versus 79%, P < 0.05, 1.2 versus 2.5, P < 0.05, 0.7 versus 1.4 cm(3), P < 0.01, respectively). Apoptosis was significantly increased in breast cancer cells by feeding of ONO-8711 at 800 p.p.m. of 158% (P < 0.05). EP(1) receptor was detected by reverse transcription-polymerase chain reaction (RT-PCR) in breast cancers, not in normal tissues. These results suggest that EP(1) receptor is associated with breast cancer development and selective PGE receptor EP(1) antagonists may possess chemopreventive effects through the induction of apoptosis without any side effects.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Body Weight/drug effects
- Bridged Bicyclo Compounds/chemistry
- Bridged Bicyclo Compounds/pharmacology
- Bridged Bicyclo Compounds/therapeutic use
- Caproates/chemistry
- Caproates/pharmacology
- Caproates/therapeutic use
- Carcinogens/pharmacology
- Cell Division/drug effects
- Female
- Imidazoles/pharmacology
- Mammary Neoplasms, Experimental/chemically induced
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/prevention & control
- Polymerase Chain Reaction
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptors, Prostaglandin E/antagonists & inhibitors
- Receptors, Prostaglandin E/metabolism
- Receptors, Prostaglandin E, EP1 Subtype
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Affiliation(s)
- T Kawamori
- Cancer Prevention Division, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045.
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Kawamori T, Uchiya N, Kitamura T, Ohuchida S, Yamamoto H, Maruyama T, Sugimura T, Wakabayashi K. Evaluation of a selective prostaglandin E receptor EP1 antagonist for potential properties in colon carcinogenesis. Anticancer Res 2001; 21:3865-9. [PMID: 11911260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
BACKGROUND Cyclooxygenases (COXs) and prostanoids play pivotal roles in colon carcinogenesis. This study was designed to determine the chemopreventive effects of ONO-8711, a selective prostaglandin E receptor EP1 antagonist, on the development of azoxymethane (AOM)-induced colonic aberrant crypt foci (ACF) in male F344 rats and to compare its potential with that of nimesulide, a well-documented selective COX-2 inhibitor. MATERIALS AND METHODS Five-week-old male F344 rats received s.c. injections of AOM (15 mg/kg body weight) or the saline vehicle once weekly for two weeks and were fed the control diet (AIN-76A) or the experimental diets containing 400 or 800 ppm of ONO-8711 or 400 ppm nimesulide for 5 weeks. RESULTS Administration of ONO-8711 at 800 ppm significantly reduced the total number of ACF/colon and 5-bromodeoxyuridine (BrdUrd) labeling index as compared to the control diet group (by 31% and 66%, respectively). As expected, dietary administration of nimesulide also suppressed the development of ACF and BrdUrd labeling index in the colon, by about 39% and 54%, respectively. CONCLUSION Our finding that ONO-8711 significantly suppresses colonic ACF formation and cell proliferation strengthens the hypothesis that the selective prostaglandin E receptor EP1 antagonists possesses chemopreventive activity against colon cancer development.
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Affiliation(s)
- T Kawamori
- Cancer Prevention Division, National Cancer Center Research Institute, Tokyo, Japan.
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Maruyama T, Asada M, Shiraishi T, Ishida A, Egashira H, Yoshida H, Maruyama T, Ohuchida S, Nakai H, Kondo K, Toda M. Design and synthesis of a highly selective EP4-receptor agonist. Part 1: 3,7-dithiaPG derivatives with high selectivity. Bioorg Med Chem Lett 2001; 11:2029-31. [PMID: 11454473 DOI: 10.1016/s0960-894x(01)00364-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A series of 3,7-dithiaPGE(1) analogues 3, 4, 11, 16 and 19 were identified as highly selective EP4-receptor agonists starting from the chemical modification of 7-thiaPGE(1) analogue 1. EP4-receptor selectivity and agonist activity were maximized in 3 and 4.
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Affiliation(s)
- T Maruyama
- Minase Research Institute, Ono Pharmaceutical Co., Ltd., Shimamoto, Mishima, 618-8585, Osaka, Japan.
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Tani K, Naganawa A, Ishida A, Egashira H, Sagawa K, Harada H, Ogawa M, Maruyama T, Ohuchida S, Nakai H, Kondo K, Toda M. Design and synthesis of a highly selective EP2-receptor agonist. Bioorg Med Chem Lett 2001; 11:2025-8. [PMID: 11454472 DOI: 10.1016/s0960-894x(01)00359-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
EP2-receptor selective agonist 3 was identified by the structural hybridization of butaprost 1a and PGE(2) 2a. Based on this information, a chemically more stabilized 4 was discovered as another highly selective EP2-receptor agonist, iv administration of which to anesthetized rats suppressed uterine motility, while PGE(2) 2a stimulated uterine motility.
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Affiliation(s)
- K Tani
- Minase Research Institute, Ono Pharmaceutical Co., Ltd., Shimamoto, Mishima, 618-8585, Osaka, Japan.
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Maruyama T, Asada M, Shiraishi T, Sakata K, Seki A, Yoshida H, Shinagawa Y, Maruyama T, Ohuchida S, Nakai H, Kondo K, Toda M. Design and synthesis of a highly selective EP4-receptor agonist. Part 2: 5-thia and 9beta-haloPG derivatives with improved stability. Bioorg Med Chem Lett 2001; 11:2033-5. [PMID: 11454474 DOI: 10.1016/s0960-894x(01)00365-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Further chemical modification to identify more chemically stabilized EP4-receptor selective agonists was continued. As a result, a further two EP4-receptor selective agonists 5-thiaPGE(1) 2a, 10 and 9beta-chloroPGF(2) analogue 11 were discovered.
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Affiliation(s)
- T Maruyama
- Minase Research Institute, Ono Pharmaceutical Co., Ltd., Shimamoto, Mishima, 618-8585, Osaka, Japan.
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Shinomiya S, Naraba H, Ueno A, Utsunomiya I, Maruyama T, Ohuchida S, Ushikubi F, Yuki K, Narumiya S, Sugimoto Y, Ichikawa A, Oh-ishi S. Regulation of TNFalpha and interleukin-10 production by prostaglandins I(2) and E(2): studies with prostaglandin receptor-deficient mice and prostaglandin E-receptor subtype-selective synthetic agonists. Biochem Pharmacol 2001; 61:1153-60. [PMID: 11301049 DOI: 10.1016/s0006-2952(01)00586-x] [Citation(s) in RCA: 132] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To know which receptors of prostaglandins are involved in the regulation of TNFalpha and interleukin 10 (IL-10) production, we examined the production of these cytokines in murine peritoneal macrophages stimulated with zymosan. The presence of PGE(2) or the PGI(2) analog carbacyclin in the medium reduced the TNFalpha production to one-half, whereas IL-10 production increased several fold; and indomethacin caused the reverse effects, suggesting that endogenous prostaglandins may have a regulatory effect on the cytokine production. Among prostaglandin E (EP) receptor-selective synthetic agonists, EP2 and EP4 agonists caused down-regulation of the zymosan-induced TNFalpha production, but up-regulation on the IL-10 production; while EP1 and EP3 agonists showed no effect. Macrophages harvested from prostaglandin I (IP) receptor-deficient mice showed the up- and down-regulatory effects on the cytokine production by the EP2 and EP4 agonists or PGE(2), but no effect was obtained by carbacyclin. On the contrary, macrophages from EP2-deficient mice showed the effect by PGE(2), carbacyclin, and the EP4 agonist, but not by the EP2 agonist; and the cells from EP4-deficient mice showed the effect by PGE(2), carbacyclin, and EP2 agonist, but not by the EP4 agonist. These functional effects of prostaglandins well accorded with the mRNA expression of TNFalpha and IL-10 when such expression was examined by the RT-PCR method. The peritoneal macrophages from normal mice expressed IP, EP2, and EP4 receptors, but not EP1 and EP3, when examined by RT-PCR. Thus the results suggest that PGI(2) and PGE(2) generated simultaneously with cytokines by macrophages treated with zymosan may influence the cytokine production through IP, EP2, and EP4 receptors.
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MESH Headings
- Animals
- Cyclic AMP/pharmacology
- Dinoprostone/metabolism
- Epoprostenol/metabolism
- Female
- Interleukin-10/metabolism
- Macrophages, Peritoneal/drug effects
- Macrophages, Peritoneal/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- RNA, Messenger/biosynthesis
- RNA, Messenger/drug effects
- Receptors, Prostaglandin/agonists
- Receptors, Prostaglandin/deficiency
- Receptors, Prostaglandin/genetics
- Receptors, Prostaglandin/metabolism
- Receptors, Prostaglandin E/agonists
- Receptors, Prostaglandin E/metabolism
- Tumor Necrosis Factor-alpha/metabolism
- Zymosan/pharmacology
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Affiliation(s)
- S Shinomiya
- Department of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Watanabe K, Kawamori T, Nakatsugi S, Ohta T, Ohuchida S, Yamamoto H, Maruyama T, Kondo K, Narumiya S, Sugimura T, Wakabayashi K. Inhibitory effect of a prostaglandin E receptor subtype EP(1) selective antagonist, ONO-8713, on development of azoxymethane-induced aberrant crypt foci in mice. Cancer Lett 2000; 156:57-61. [PMID: 10840160 DOI: 10.1016/s0304-3835(00)00440-7] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We previously reported that prostaglandin E(2) contributes to colon carcinogenesis through its binding to the prostaglandin E receptor subtype EP(1) using a genetic approach in EP(1)-knockout mice and a pharmacological approach with the EP(1) selective antagonist, ONO-8711. In the present study, we examined the effects of another more selective EP(1) receptor antagonist, ONO-8713, on development of azoxymethane (AOM)-induced aberrant crypt foci (ACFs) in male C57BL/6J mice treated i.p. with 10mg/kg body weight AOM once a week for 3weeks. Administration of ONO-8713 at doses of 250, 500 and 1000ppm in diet during and post-AOM treatment for 5weeks resulted in a dose-dependent reduction of ACF formation, being 15, 30 and 36% inhibition of the control value, respectively. The level of inhibition was similar to that with ONO-8711. Moreover, ONO-8713 suppressed the development of ACF when administered at post-AOM, as in the case of ONO-8711. The data confirm EP(1) receptor involvement in colon carcinogenesis.
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Affiliation(s)
- K Watanabe
- Cancer Prevention Division, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, 104-0045, Tokyo, Japan
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Naka M, Nanbu T, Kobayashi K, Kamanaka Y, Komeno M, Yanase R, Fukutomi T, Fujimura S, Seo HG, Fujiwara N, Ohuchida S, Suzuki K, Kondo K, Taniguchi N. A potent inhibitor of inducible nitric oxide synthase, ONO-1714, a cyclic amidine derivative. Biochem Biophys Res Commun 2000; 270:663-7. [PMID: 10753680 DOI: 10.1006/bbrc.2000.2474] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
(1S,5S,6R,7R)-7-Chloro-3-imino-5-methyl-2-azabicyclo[4.1.0]heptane hydrochloride (ONO-1714), a novel cyclic amidine analogue, inhibits human inducible nitric oxide (iNOS) with a K(i) of 1.88 nM and rodent iNOS with similar potency in vitro. ONO-1714 was found to be 10-fold selective for human iNOS over human endothelial NOS (ecNOS). When the inhibitory activity of ONO-1714 was compared for iNOS, it was found to be 451-fold and >20,000-fold more potent than L-NMMA and aminoguanidine (AG), respectively. In terms of human iNOS selectivity, ONO-1714 was approximately 34- and 2-fold more selective for iNOS than L-NMMA and AG, respectively. ONO-1714 inhibited the LPS-induced elevation of plasma nitrate/nitrite in mice with an ID(50) value of 0.010 mg/kg, s.c. The maximum tolerated dose of ONO-1714 was 30 mg/kg, i.v. Thus, ONO-1714 represents one of the most potent iNOS inhibitors in vitro and in vivo to date and has great potentials for use as an inhibitor for clarifying the pathophysiological roles of iNOS and for use as a therapeutic agent.
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Affiliation(s)
- M Naka
- Minase Research Institute, Ono Pharmaceutical Company, Ltd., 3-1-1 Sakurai, Shimamoto, Mishima, Osaka, 618-8585, Japan
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Maruyama T, Ohuchida S. [Selective agonists and antagonists for prostaglandin E2 receptor subtypes]. Tanpakushitsu Kakusan Koso 2000; 45:1001-7. [PMID: 10771665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- T Maruyama
- Minase Research Institute, Ono Pharmaceutical Co., Ltd., Osaka, Japan.
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Watanabe K, Kawamori T, Nakatsugi S, Ohta T, Ohuchida S, Yamamoto H, Maruyama T, Kondo K, Ushikubi F, Narumiya S, Sugimura T, Wakabayashi K. Role of the prostaglandin E receptor subtype EP1 in colon carcinogenesis. Cancer Res 1999; 59:5093-6. [PMID: 10537280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Although the cyclooxygenase pathway of the arachidonic acid cascade has been suggested to play an important role in colon carcinogenesis, the molecular species of prostanoids and receptors involved have not been fully elucidated yet. We examined the development of aberrant crypt foci (ACFs), putative preneoplastic lesions of the colon, in two lines of knockout mice, each deficient in prostaglandin E receptors, EP1 and EP3, by treatment with the colon carcinogen, azoxymethane. Formation of ACFs was decreased only in the EP1-knockout mice to approximately 60% of the level in wild-type mice. Administration of 250, 500, or 1000 ppm of a novel selective EP1 antagonist, ONO-8711, in the diet to azoxymethane-treated C57BL/6J mice also resulted in a dose-dependent reduction of ACF formation. Moreover, when Min mice, having a nonsense mutation in the adenomatous polyposis coli gene, were given 500 ppm ONO-8711 in the diet, the number of intestinal polyps was significantly reduced to 57% of that in the basal diet group. These results strongly suggest that prostaglandin E2 contributes to colon carcinogenesis to some extent through its action at the EP1 receptor. Thus, EP1 antagonists may be good candidates as chemopreventive agents for colon cancer.
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Affiliation(s)
- K Watanabe
- Cancer Prevention Division, National Cancer Center Research Institute, Tokyo, Japan
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Ohuchida S. [A study on epilepsy with schizophrenia-like symptoms]. Seishin Shinkeigaku Zasshi 1966; 68:435-68. [PMID: 6007248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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