1
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Kikuchi F, Ikeda Z, Kakegawa K, Nishikawa Y, Sasaki S, Fukuda K, Takami K, Banno Y, Nishikawa H, Taya N, Nakahata T, Itono S, Yashiro H, Tsuchimori K, Hiyoshi H, Sasaki M, Tohyama K, Matsumiya K, Ishihara Y, Kawamoto T, Kamaura M, Watanabe M, Kitazaki T, Maekawa T, Sasaki M. Discovery of a novel series of medium-sized cyclic enteropeptidase inhibitors. Bioorg Med Chem 2023; 93:117462. [PMID: 37683572 DOI: 10.1016/j.bmc.2023.117462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023]
Abstract
Enteropeptidase is located in the duodenum that involved in intestinal protein digestion. We have reported enteropeptidase inhibitors with low systemic exposure. The aim of this study was to discover novel enteropeptidase inhibitors showing more potent in vivo efficacy while retaining low systemic exposure. Inhibitory mechanism-based drug design led us to cyclize ester 2 to medium-sized lactones, showing potent enteropeptidase inhibitory activity and improving the ester stability, thus increasing fecal protein output in vivo. Optimization on the linker between two benzene rings resulted in discovery of ether lactone 6b, exhibiting further enhanced enteropeptidase inhibitory activity and long duration of inhibitory state. Oral administration of 6b in mice significantly elevated fecal protein output compared with the lead 2. In addition, 6b showed low systemic exposure along with low intestinal absorption. Furthermore, we identified the 10-membered lactonization method for scale-up synthesis of 6b, which does not require high-dilution conditions.
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Affiliation(s)
- Fumiaki Kikuchi
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Zenichi Ikeda
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Keiko Kakegawa
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Youichi Nishikawa
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Shigekazu Sasaki
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Koichiro Fukuda
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kazuaki Takami
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Yoshihiro Banno
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hitoaki Nishikawa
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Naohiro Taya
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Takashi Nakahata
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Sachiko Itono
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hiroaki Yashiro
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kazue Tsuchimori
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hideyuki Hiyoshi
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Masako Sasaki
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kimio Tohyama
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kouta Matsumiya
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Youko Ishihara
- Pharmaceutical Sciences, Takeda Pharmaceutical Company Ltd., 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Tetsuji Kawamoto
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Masahiro Kamaura
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Masanori Watanabe
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Tomoyuki Kitazaki
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Tsuyoshi Maekawa
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Minoru Sasaki
- Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
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2
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Ikeda S, Kajita Y, Miyamoto M, Matsumiya K, Ishii T, Nishi T, Gay SC, Lane W, Constantinescu CC, Alagille D, Papin C, Tamagnan G, Kuroita T, Koike T. Design and synthesis of aryl-piperidine derivatives as potent and selective PET tracers for cholesterol 24-hydroxylase (CH24H). Eur J Med Chem 2022; 240:114612. [PMID: 35863274 DOI: 10.1016/j.ejmech.2022.114612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/07/2022] [Accepted: 07/10/2022] [Indexed: 11/03/2022]
Abstract
Cholesterol 24-hydroxylase (CH24H, CYP46A1) is a cytochrome P450 family enzyme that maintains the homeostasis of brain cholesterol. Soticlestat, a potent and selective CH24H inhibitor, is in development as a therapeutic agent for Dravet syndrome and Lennox-Gastaut syndrome. Herein, we report the discovery of aryl-piperidine derivatives as potent and selective CH24H positron emission tomography (PET) tracers which can be used for dose guidance of a clinical CH24H inhibitor and as a diagnostic tool for CH24H-related pathology. Starting from compound 1 (IC50 = 16 nM, logD = 1.7), which was reported as a CH24H inhibitor with lower lipophilicity, a18F-labeling site (3-fluoroazetidine) was incorporated by structure-based drug design (SBDD) utilizing the co-crystal structure of a compound 1 analog. Subsequent optimization to adjust key parameters for PET tracers, such as potency, lipophilicity, brain penetration, and unbound plasma protein binding, enabled compounds 3f (IC50 = 8.8 nM) and 3g (IC50 = 8.7 nM) as PET imaging candidates. Selectivity of these compounds for CH24H was validated by a brain distribution study using CH24H-WT and KO mice. In non-human primate PET imaging, [18F]3f and [18F]3g showed similar regional uptake in the brain, indicating that these tracers were specific to the CH24H-expressed regions and validated the expression of CH24H in the living brain by different tracers.
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Affiliation(s)
- Shuhei Ikeda
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Yuichi Kajita
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Maki Miyamoto
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Kouta Matsumiya
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Tsuyoshi Ishii
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Toshiya Nishi
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Sean C Gay
- Takeda California, Inc., 9625 Towne Centre Drive, San Diego, CA, 92121, United States
| | - Weston Lane
- Takeda California, Inc., 9625 Towne Centre Drive, San Diego, CA, 92121, United States
| | | | - David Alagille
- Invicro, LLC, 60 Temple Street, New Haven, CT, 06510, United States
| | - Caroline Papin
- Invicro, LLC, 60 Temple Street, New Haven, CT, 06510, United States
| | - Gilles Tamagnan
- Invicro, LLC, 60 Temple Street, New Haven, CT, 06510, United States
| | - Takanobu Kuroita
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Tatsuki Koike
- Takeda Pharmaceutical Company Ltd., 26-1 Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan.
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3
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Hattori Y, Matsumoto S, Morimoto S, Daini M, Toyofuku M, Matsuda S, Baba R, Murakami K, Iwatani M, Oki H, Iwasaki S, Matsumiya K, Tominari Y, Kimura H, Ito M. Design, synthesis, and structure–activity relationship of TAK-418 and its derivatives as a novel series of LSD1 inhibitors with lowered risk of hematological side effects. Eur J Med Chem 2022; 239:114522. [DOI: 10.1016/j.ejmech.2022.114522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/25/2022] [Accepted: 06/04/2022] [Indexed: 11/04/2022]
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4
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Matsuda S, Hattori Y, Matsumiya K, McQuade P, Yamashita T, Aida J, Sandiego CM, Gouasmat A, Carroll VM, Barret O, Tamagnan G, Koike T, Kimura H. Design, Synthesis, and Evaluation of [ 18F]T-914 as a Novel Positron-Emission Tomography Tracer for Lysine-Specific Demethylase 1. J Med Chem 2021; 64:12680-12690. [PMID: 34423983 DOI: 10.1021/acs.jmedchem.1c00653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Histone methylation is associated with the pathophysiology of neurodevelopmental disorders. Lysine-specific demethylase 1 (LSD1) catalyzes histone demethylation in a flavin adenine dinucleotide (FAD)-dependent manner. Thus, inhibiting LSD1 enzyme activity could offer a novel way to treat neurodevelopmental disorders. Assessing LSD1 target engagement using positron-emission tomography (PET) imaging could aid in developing therapeutic LSD1 inhibitors. In this study, PET probes based on 4-(2-aminocyclopropyl)benzamide derivatives that bind irreversibly to FAD found in LSD1 were examined. By optimizing the profiles of brain penetrance and brain-penetrant metabolites, T-914 (1g) was identified as a suitable PET tracer candidate. PET studies in nonhuman primates demonstrated that [18F]1g had heterogeneous brain uptake, which corresponded to known LSD1 expression levels. Moreover, brain uptake of [18F]1g was reduced by coadministration of unlabeled 1g, demonstrating blockable binding. These data suggest that [18F]1g warrants further investigation as a potential PET tracer candidate for assessing target engagement of LSD1.
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Affiliation(s)
- Satoru Matsuda
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Yasushi Hattori
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kouta Matsumiya
- Drug Metabolism and Pharmacokinetics Research Laboratories, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Paul McQuade
- Quantitative Translational Science - Imaging, Takeda Pharmaceutical Company Limited, 40 Landsdowne Street, Cambridge, Massachusetts 02139, United States
| | - Tohru Yamashita
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Jumpei Aida
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Christine M Sandiego
- Invicro, A Konica Minolta Company, 60 Temple Street, Suite 8A, New Haven, Connecticut 06510, United States
| | - Alexandra Gouasmat
- Invicro, A Konica Minolta Company, 60 Temple Street, Suite 8A, New Haven, Connecticut 06510, United States
| | - Vincent M Carroll
- Invicro, A Konica Minolta Company, 60 Temple Street, Suite 8A, New Haven, Connecticut 06510, United States
| | - Olivier Barret
- Université Paris-Saclay, CEA, CNRS, MIRCen, Laboratoire des Maladies Neurodégénératives, 92265 Fontenay-aux-Roses, France
| | - Gilles Tamagnan
- XingImaging LLC, 760 Temple Street, New Haven, Connecticut 06510, United States
| | - Tatsuki Koike
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Haruhide Kimura
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
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5
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Harada K, Kohara H, Yukawa T, Matsumiya K, Shinozawa T. Cell-based high-throughput screening for the evaluation of reactive metabolite formation potential. Toxicol In Vitro 2021; 74:105159. [PMID: 33823239 DOI: 10.1016/j.tiv.2021.105159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/24/2021] [Accepted: 04/02/2021] [Indexed: 11/18/2022]
Abstract
Here, we established a high-throughput in vitro assay system to predict reactive metabolite (RM) formation. First, we performed the glutathione (GSH) consumption assay to monitor GSH levels as an index of RM formation potential using HepaRG cells pretreated with 500 μM D,L-buthionine-(S,R)-sulfoximine (BSO) and then treated with ticlopidine and diclofenac. Both drugs, under GSH-reduced conditions, significantly decreased relative cellular GSH content by 70% and 34%, respectively, compared with that in cells not pretreated with BSO. Next, we examined the correlation between GSH consumption and covalent binding assays; the results showed good correlation (correlation coefficient = 0.818). We then optimized the test compound concentration for evaluating RM formation potential using 76 validation compound sets, and the highest sensitivity (53%) was observed at 100 μM. Finally, using HepG2 cells, PXB-cells, and human primary hepatocytes, we examined the cell types suitable for evaluating RM formation potential. The expression of CYP3A4 was highest in HepaRG cells, suggesting the highest sensitivity (56.4%) of the GSH consumption assay. Moreover, a co-culture model of PXB-cells and HepaRG cells showed high sensitivity (72.7%) with sufficient specificity (85.7%). Thus, the GSH consumption assay can be used to effectively evaluate RM formation potential in the early stages of drug discovery.
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Affiliation(s)
- Kosuke Harada
- Drug Safety Research and Evaluation, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hiroshi Kohara
- Drug Safety Research and Evaluation, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Tomoya Yukawa
- Drug Safety Research and Evaluation, Takeda Pharmaceutical Company Limited, 35 Landsdowne Street, Cambridge, MA 02139, USA
| | - Kouta Matsumiya
- Drug Metabolism & Pharmacokinetics Research Laboratories, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Tadahiro Shinozawa
- Drug Safety Research and Evaluation, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
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6
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Hattori Y, Matsuda S, Baba R, Matsumiya K, Iwasaki S, Constantinescu CC, Morley TJ, Carroll VM, Papin C, Gouasmat A, Alagille D, Tamagnan G, Koike T. Design, Synthesis, and Evaluation of (2-Aminocyclopropyl)phenyl Derivatives as Novel Positron Emission Tomography Imaging Agents for Lysine-Specific Demethylase 1 in the Brain. J Med Chem 2021; 64:3780-3793. [PMID: 33729758 DOI: 10.1021/acs.jmedchem.0c01937] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Dysregulation of histone H3 lysine 4 (H3K4) methylation is implicated in the pathogenesis of neurodevelopmental disorders. Lysine-specific demethylase 1 (LSD1) determines the methylation status of H3K4 through flavin adenine dinucleotide (FAD)-mediated histone demethylation. Therefore, LSD1 inhibition in the brain can be a novel therapeutic option for treating these disorders. Positron emission tomography (PET) imaging of LSD1 allows for investigating LSD1 expression levels under normal and disease conditions and validating target engagement of therapeutic LSD1 inhibitors. This study designed and synthesized (2-aminocyclopropyl)phenyl derivatives with irreversible binding to LSD1 as PET imaging agents for LSD1 in the brain. We optimized lipophilicity of the lead compound to minimize the risk of nonspecific binding and identified 1e with high selectivity over monoamine oxidase A and B, which are a family of FAD-dependent enzymes homologous to LSD1. PET imaging in a monkey showed a high uptake of [18F]1e to regions enriched with LSD1, indicating its specific binding to LSD1.
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Affiliation(s)
- Yasushi Hattori
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Satoru Matsuda
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Rina Baba
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kouta Matsumiya
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Shinji Iwasaki
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
| | | | - Thomas J Morley
- Invicro LLC, 60 Temple Street, Suite 8A, New Haven, Connecticut 06518, United States
| | - Vincent M Carroll
- Invicro LLC, 60 Temple Street, Suite 8A, New Haven, Connecticut 06518, United States
| | - Caroline Papin
- Invicro LLC, 60 Temple Street, Suite 8A, New Haven, Connecticut 06518, United States
| | - Alexandra Gouasmat
- Invicro LLC, 60 Temple Street, Suite 8A, New Haven, Connecticut 06518, United States
| | - David Alagille
- XingImaging LLC, 760 Temple Street, New Haven, Connecticut 06510, United States
| | - Gilles Tamagnan
- XingImaging LLC, 760 Temple Street, New Haven, Connecticut 06510, United States
| | - Tatsuki Koike
- Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan
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7
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Nagai H, Kaisho T, Yokoyama K, Asakawa T, Fujita H, Matsumiya K, Noguchi J, Tsuchimori K, Nishizawa N, Kanematsu-Yamaki Y, Dote K, Inooka H, Sakamoto JI, Ohtaki T, Asami T, Takekawa S. Differential effects of selective agonists of neuromedin U1 and U2 receptors in obese and diabetic mice. Br J Pharmacol 2017; 175:359-373. [PMID: 29057457 DOI: 10.1111/bph.14077] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 10/13/2017] [Accepted: 10/15/2017] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND PURPOSE Neuromedin U (NmU) may be a novel target for obesity treatment owing to its anorectic and energy expenditure enhancing effects. Although two receptors, NMU1 and NMU2, are both responsible for the NmU-mediated anti-obesity effects, the receptor agonist with the most appropriate profiles for treating obesity and diabetes in terms of efficacy and safety is as yet unknown. Thus, we developed and evaluated novel NMU1/2 receptor-selective agonists. EXPERIMENTAL APPROACH Efficacy and safety were assessed in mice with diet-induced obesity (DIO) and those with leptin-deficient diabetes (ob/ob) through repeated peripheral administration of selective agonists to NMU1 (NMU-6102) and NMU2 (NMU-2084), along with non-selective NMU1/2 agonists (NMU-0002 and NMU-6014). We also performed immunohistochemistry for c-Fos protein expression in the brain to probe their mechanisms of action. KEY RESULTS Although both non-selective NMU1/2 agonists and the NMU2-selective agonist had high efficacy compared with the NMU1-selective agonist, only the NMU2-selective agonist led to relatively low adverse effects, such as diarrhoea, in DIO mice. However, the non-selective NMU1/2 agonist and the NMU1-selective agonist, but not the NMU2-selective agonist, were effective in diabetic ob/ob mice. Mechanistically, NMU2-selective agonists preferentially activate pro-opiomelanocortin neurons in the hypothalamic arcuate nucleus but not in the paraventricular nucleus. CONCLUSIONS AND IMPLICATIONS These results suggest that an NMU2 receptor-selective agonist may be a well-balanced drug for the treatment of obesity and that an NMU1 receptor-selective agonist may also be beneficial for treating obesity and diabetes once its side effects are minimized.
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Affiliation(s)
- Hiroaki Nagai
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Tomoko Kaisho
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Kotaro Yokoyama
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Tomoko Asakawa
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Hisashi Fujita
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Kouta Matsumiya
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Jiro Noguchi
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Kazue Tsuchimori
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Naoki Nishizawa
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | | | - Katsuko Dote
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Hiroshi Inooka
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | | | - Tetsuya Ohtaki
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Taiji Asami
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Shiro Takekawa
- Research, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
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8
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Niida A, Kanematsu-Yamaki Y, Asakawa T, Ishimura Y, Fujita H, Matsumiya K, Nishizawa N, Adachi Y, Mochida T, Tsuchimori K, Yoneyama-Hirozane M, Sakamoto J, Hirabayashi H, Fukui H, Takekawa S, Asami T. Antiobesity and emetic effects of a short-length peptide YY analog and its PEGylated and alkylated derivatives. Bioorg Med Chem 2017; 26:566-572. [PMID: 29279243 DOI: 10.1016/j.bmc.2017.12.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 11/18/2022]
Abstract
Neuropeptide Y2 receptor (Y2R) agonism is an important anorectic signal and a target of antiobesity drug discovery. Recently, we synthesized a short-length Y2R agonist, PYY-1119 (4-imidazolecarbonyl-[d-Hyp24,Iva25,Pya(4)26,Cha27,36,γMeLeu28,Lys30,Aib31]PYY(23-36), 1) as an antiobesity drug candidate. Compound 1 induced marked body weight loss in diet-induced obese (DIO) mice; however, 1 also induced severe vomiting in dogs at a lower dose than the minimum effective dose administered to DIO mice. The rapid absorption of 1 after subcutaneous administration caused the severe vomiting. Polyethylene glycol (PEG)- and alkyl-modified derivatives of 1 were synthesized to develop Y2R agonists with improved pharmacokinetic profiles, i.e., lower maximum plasma concentration (Cmax) and longer time at maximum concentration (Tmax). Compounds 5 and 10, modified with 20 kDa PEG at the N-terminus and eicosanedioic acid at the Lys30 side chain of 1, respectively, showed high Y2R binding affinity and induced significant body weight reduction upon once-daily administration to DIO mice. Compounds 5 and 10, with their relatively low Cmax and long Tmax, partially attenuated emesis in dogs compared with 1. These results indicate that optimization of pharmacokinetic properties of Y2R agonists is an effective strategy to alleviate emesis induced by Y2R agonism.
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Affiliation(s)
- Ayumu Niida
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan.
| | - Yoko Kanematsu-Yamaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan.
| | - Tomoko Asakawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Yoshimasa Ishimura
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Hisashi Fujita
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Kouta Matsumiya
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Naoki Nishizawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Yusuke Adachi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Taisuke Mochida
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Kazue Tsuchimori
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Mariko Yoneyama-Hirozane
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Junichi Sakamoto
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Hideki Hirabayashi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Hideo Fukui
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Shiro Takekawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan
| | - Taiji Asami
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, Kanagawa 251-8555, Japan.
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Kanematsu-Yamaki Y, Nishizawa N, Kaisho T, Nagai H, Mochida T, Asakawa T, Inooka H, Dote K, Fujita H, Matsumiya K, Hirabayashi H, Sakamoto J, Ohtaki T, Takekawa S, Asami T. Potent Body Weight-Lowering Effect of a Neuromedin U Receptor 2-selective PEGylated Peptide. J Med Chem 2017; 60:6089-6097. [DOI: 10.1021/acs.jmedchem.7b00330] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yoko Kanematsu-Yamaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Naoki Nishizawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Tomoko Kaisho
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Hiroaki Nagai
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Taisuke Mochida
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Tomoko Asakawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Hiroshi Inooka
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Katsuko Dote
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Hisashi Fujita
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Kouta Matsumiya
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Hideki Hirabayashi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Junichi Sakamoto
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Tetsuya Ohtaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Shiro Takekawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
| | - Taiji Asami
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa, 251-8555, Japan
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10
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Sato Y, Shinka T, Nozawa S, Yoshiike M, Koh E, Kanaya J, Namiki M, Matsumiya K, Tsujimura A, Komatsu K, Itoh N, Eguchi J, Yamauchi A, Iwamoto T, Nakahori Y. Y chromosome haplogroup D2a1 is significantly associated with high levels of luteinizing hormone in Japanese men. Andrology 2015; 3:520-5. [PMID: 25858496 DOI: 10.1111/andr.12026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 01/12/2023]
Abstract
The association between the Y chromosome haplogroup D2 and risk of azoospermia and low sperm motility has been previously studied, and it was indicated that haplogroups DE (YAP lineage) are associated with prostate cancer risk in Japanese males. Our assumption had been that Y chromosome haplogroups may be associated with sex hormone levels, because sex hormones have been deemed responsible for spermatogenesis and carcinogenesis. In this study, we assessed the association between Y chromosome haplogroups and sex hormone levels, including those of testosterone, sex hormone-binding globulin (SHBG), follicle-stimulating hormone (FSH), luteinizing hormone (LH), inhibin-B, and calculated free testosterone (cFT), in 901 young men from the general Japanese population (cohort 1) and 786 Japanese men of proven fertility (cohort 2). We found that the haplogroup D2a1 was significantly associated with high LH levels in a combined analysis involving two cohorts (β = 0.068, SE = 0.025, p = 0.0075), following correction for multiple testing. To date, this result is the first evidence that implicates Y chromosome haplogroups in an association with sex hormone levels.
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Affiliation(s)
- Y Sato
- Department of Pharmaceutical Information Science, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.,Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T Shinka
- Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - S Nozawa
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Yoshiike
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - E Koh
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - J Kanaya
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - M Namiki
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - K Matsumiya
- Department of Urology, Osaka Police Hospital, Osaka, Japan
| | - A Tsujimura
- Faculty of Medicine, Department of Urology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - K Komatsu
- Department of Urology, Harasanshinkai Hospital, Fukuoka, Japan
| | - N Itoh
- Department of Urology, Sapporo Medical University, Sapporo, Japan
| | - J Eguchi
- Department of Urology, Nagasaki University, Nagasaki, Japan
| | - A Yamauchi
- Department of Pharmaceutical Information Science, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T Iwamoto
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan.,Center for Infertility and IVF, International University of Health and Welfare Hospital, Nasushiobara, Tochigi, Japan
| | - Y Nakahori
- Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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11
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Kuriki I, Xie H, Tokunaga R, Matsumiya K, Shioiri S. Interaction of color-defined and luminance-defined motion signals in human visual cortex. J Vis 2014. [DOI: 10.1167/14.10.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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12
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Shioiri S, Honjo H, Matsumiya K, Ichiro K. Different spatial attention for different stages of visual processing. J Vis 2014. [DOI: 10.1167/14.10.1026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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13
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Shioiri S, Kashiwase Y, Omori N, Matsumiya K, Kuriki I. Temporal order of attentional disengagement and reengagement investigated by steady-state visual evoked potentials and event-related potentials. J Vis 2013. [DOI: 10.1167/13.9.1187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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14
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Fang Y, Nakashima R, Matsumiya K, Tokunaga R, Kuriki I, Shioiri S. Contribution of head movements to gaze shift during visual search in a large visual field. J Vis 2013. [DOI: 10.1167/13.9.530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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15
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Shioiri S, Tsuchiai T, Matsumiya K, Kuriki I. Viewpoint dependent and independent contextual cuing effect. J Vis 2012. [DOI: 10.1167/12.9.1078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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16
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17
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Shioiri S, Yoshizawa M, Ogiya M, Matsumiya K, Yaguchi H. Low-level motion analysis of color and luminance for perception of 2D and 3D motion. J Vis 2012; 12:12.6.33. [DOI: 10.1167/12.6.33] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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18
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Horiuchi K, Kuriki I, Tokunaga R, Matsumiya K, Shioiri S. The effect of Color-Luminance correlations in surrounding stimuli on color constancy under interocular suppression. J Vis 2011. [DOI: 10.1167/11.11.355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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19
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Kashiwase Y, Matsumiya K, Kuriki I, Shioiri S. Attention boosts neural population response via neural response synchronization. J Vis 2011. [DOI: 10.1167/11.11.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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20
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Shioiri S, Matsumiya K, Ogiya M. Color and luminance for motion-in-depth. J Vis 2011. [DOI: 10.1167/11.11.718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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21
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Matsuki N, Ichiba S, Matsumiya K, Ujike Y. 1089 POSTER Apoptosis Induction by Low Voltage Electric Pulses. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70732-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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23
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Shioiri S, Matsumiya K. Comparing the static and flicker MAEs with a cancellation technique in adaptation stimuli. J Vis 2010. [DOI: 10.1167/10.7.846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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24
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Kashiwase Y, Matsumiya K, Kuriki I, Shioiri S. Timings of attentional "disengagement" and "reengagement" estimated with steady-state visual evoked potential. J Vis 2010. [DOI: 10.1167/10.7.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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25
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Fukuda K, Kaneko H, Matsumiya K. Temporal integration of vertical-size disparity for slant perception. J Vis 2010. [DOI: 10.1167/3.12.74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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26
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Matsumiya K, Shioiri S. High spatial frequency superiority of motion aftereffect for smooth pursuit eye movements. J Vis 2010. [DOI: 10.1167/6.6.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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27
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Shioiri S, Matsumiya K. High spatial frequency superiority of MAE for global motion. J Vis 2010. [DOI: 10.1167/7.9.738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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28
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Matsumiya K, Shioiri S. Motion aftereffects of plaid stimuli for smooth pursuits. J Vis 2010. [DOI: 10.1167/7.9.726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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29
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30
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Shioiri S, Matsumiya K, Tamura H. Static and flicker MAE for global motion. J Vis 2010. [DOI: 10.1167/8.6.1031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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31
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Sakano Y, Matsumiya K, Kaneko H. Effects of viewing distance and experience on the integration process of disparity and perspective for the slant perception. J Vis 2010. [DOI: 10.1167/3.9.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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32
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Shioiri S, Matsumiya K. High spatial frequency of motion aftereffect. J Vis 2010. [DOI: 10.1167/6.6.1086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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33
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Fukuda K, Matsumiya K, Kaneko H. Temporal Pooling of Vertical Size Disparity for Slant Perception. J Vis 2010. [DOI: 10.1167/3.9.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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34
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Matsumiya K, Wilson HR. Size constancy in face discrimination: synthetic faces & principal componentss. J Vis 2010. [DOI: 10.1167/2.7.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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35
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Tsujimura A, Matsumiya K, Takahashi T, Yamanaka M, Koga M, Miura H, Nishimura K, Takeyama M, Fujioka H, Okamoto Y, Iwamoto T, Okuyama A. EFFECT OF LIFESTYLE FACTORS ONINFERTILITY IN MEN. ACTA ACUST UNITED AC 2009; 50:15-7. [PMID: 14660165 DOI: 10.1080/01485010490250551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 10/26/2022]
Abstract
Environmental factors, changes in lifestyle and occupational exposures are responsible for declining human semen quality. We investigated the effects of history of surgery and lifestyle choices on infertility of 271 infertile men and 251 healthy volunteers. The frequency of varicocelectomy was significantly higher in infertile men (2.9%) than in controls (0.4%; P < 0.05). Alcohol use was significantly more common in infertile men (92%) than in controls (80%; P < 0.01). Satisfaction with sexual life was greater in controls (85%) than in infertile men (77%; P < 0.05). Other factors had no effect.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Osaka Central Hospital, Osaka, Japan
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36
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Shioiri S, Matsumiya K. Motion mechanisms with different spatiotemporal characteristics identified by an MAE techniquewith superimposed gratings. J Vis 2009; 9:30.1-15. [PMID: 19757908 DOI: 10.1167/9.5.30] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2008] [Accepted: 04/24/2009] [Indexed: 11/24/2022] Open
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37
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Matsumiya K, Ando H. World-centered perception of 3D object motion during visually guided self-motion. J Vis 2009; 9:15.1-13. [DOI: 10.1167/9.1.15] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Accepted: 11/12/2008] [Indexed: 11/24/2022] Open
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38
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Yamashita H, Matsumiya K, Masamune K, Liao H, Chiba T, Dohi T. Miniature bending manipulator for fetoscopic intrauterine laser therapy to treat twin-to-twin transfusion syndrome. Surg Endosc 2007; 22:430-5. [PMID: 17661138 DOI: 10.1007/s00464-007-9444-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [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: 11/30/2022]
Abstract
BACKGROUND Recent typical therapy for twin-to-twin transfusion syndrome (TTTS) is selective laser photocoagulation of anastomotic communicating vessels on the placenta using the fetoscopic approach. The difficulty of a conventional laser device approach for this procedure depends significantly on the placental location, so a new robotized device is required to bend the direction of laser irradiation flexibly within the narrow uterus. METHODS The authors designed a miniature bending mechanism impelled by a wire-guided linkage driving method that provides a stable procedure for bending laser irradiation from -90 degrees to 90 degrees . Using this bending mechanism, the authors developed a bending manipulator with a diameter of 3.5 mm and a hollow central channel with a diameter of 0.8 mm for passing a glass fiber for neodymium:yttrium-aluminum-garnet (Nd:YAG) laser photocoagulation. The bending mechanism is motorized by an electrical actuator and controlled by a grip-type interface with a small joystick. The robotized tip's part and the actuator's part are easily separable for cleaning and sterilization. RESULTS In performance evaluations of the manipulator, the bending characteristics with a glass fiber were examined. The bending range was -52.6 degrees to 80 degrees, with a very small hysteresis error, and the bending repeatability error was 0.5 degrees +/- 0.2 degrees, which corresponds with the high accuracy of 0.2 +/- 0.1-mm positioning error at the glass fiber's tip. In the evaluation of Nd:YAG laser photocoagulation, the study confirmed that the manipulator performed effective laser photocoagulation of the placental phantom surface (underwater chicken liver). The large bending range, reaching 80 degrees, enabled a flexible approach from various directions with a high irradiation efficiency of no less than 96.6%. CONCLUSIONS The authors' original miniature bending manipulator can change the laser irradiating direction with highly repeatable positioning accuracy for speedy, safe, and effective vessel occlusion in clinical practice.
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Affiliation(s)
- H Yamashita
- Department of Mechano-Informatics, Graduate School of Information Science and Technology, The Univercity of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
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39
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Tsujimura A, Matsumiya K, Takao T, Miyagawa Y, Takada S, Koga M, Iwasa A, Takeyama M, Okuyama A. Treatment with human chorionic gonadotropin for PADAM: a preliminary report. Aging Male 2005; 8:175-9. [PMID: 16390742 DOI: 10.1080/13685530500282794] [Citation(s) in RCA: 16] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
The purpose of this study was to evaluate the efficacy and safety of human chorionic gonadotropin (hCG) for patients with partial androgen deficiency of the aging male (PADAM). Twenty-one patients over 50 years of age with PADAM symptoms were included in this study. Laboratory and endocrinologic profiles were reviewed as appropriate, and PADAM symptoms were judged by means of several questionnaires such as the Aging Males' Symptoms (AMS) scale, short version of the International Index of Erectile Function (IIEF-5), and the Self-rating Depression Scale (SDS). Laboratory and endocrinologic values and symptom scores were evaluated and compared before and after treatment by hCG injection. The treatment period was 8.0 +/- 5.0 months (3.0-24.0 months). Serum concentrations of testosterone, including total testosterone, calculated free testosterone, and calculated bioavailable testosterone, increased significantly. AMS total scores and subscores decreased significantly after treatment. However, IIEF-5 and SDS scores did not improve. With respect to adverse effects, laboratory tests showed that only red blood cell count, hematocrit and hemoglobin level increased significantly after treatment, however, these values remained within the normal range. No adverse effect was identified after treatment. We conclude that hCG injection may be considered as a treatment for PADAM.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan.
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40
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Fujita K, Tsujimura A, Takao T, Miyagawa Y, Matsumiya K, Koga M, Takeyama M, Fujioka H, Aozasa K, Okuyama A. Expression of inhibin α, glial cell line-derived neurotrophic factor and stem cell factor in Sertoli cell-only syndrome: relation to successful sperm retrieval by microdissection testicular sperm extraction. Hum Reprod 2005; 20:2289-94. [PMID: 15845595 DOI: 10.1093/humrep/dei032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 01/04/2023] Open
Abstract
BACKGROUND Microdissection testicular sperm extraction (TESE) has provided new hope for successful sperm retrieval to patients with Sertoli cell-only syndrome (SCO). We determined expression of the inhibin alpha subunit, glial cell line-derived neurotrophic factor (GDNF) and stem cell factor (SCF) in Sertoli cells obtained from patients with SCO immunohistochemically and compared expression rates with rates of microdissection TESE sperm retrieval. METHODS Testicular biopsy specimens were obtained from 52 men with non-obstructive azoospermia who underwent microdissection TESE and were diagnosed with SCO by histological analysis. RESULTS All specimens showed intense staining for the inhibin alpha subunit. Moderate or intense staining for GDNF was observed in 65.8% of specimens. All but one showed moderate or intense staining for SCF. Among specimens negative for GDNF, the sperm retrieval rate was significantly higher (100%) for specimens with intense staining for SCF than for specimens with no or moderate staining (30.7%) (P<0.05) for SCF. CONCLUSION GDNF expression differs among patients with SCO. The sperm retrieval rate was high in cases of no staining for GDNF and intense staining for SCF.
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Affiliation(s)
- K Fujita
- Department of Urology and Department of Pathology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita Osaka 565-0871, Japan.
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41
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Tsujimura A, Matsumiya K, Miyagawa Y, Takao T, Fujita K, Takada S, Koga M, Iwasa A, Takeyama M, Okuyama A. Comparative study on evaluation methods for serum testosterone level for PADAM diagnosis. Int J Impot Res 2004; 17:259-63. [PMID: 15616608 DOI: 10.1038/sj.ijir.3901300] [Citation(s) in RCA: 35] [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: 11/09/2022]
Abstract
The International Society for the Study of the Aging Male (ISSAM) recommends that a diagnosis be based on a patient's total testosterone (TT), calculated free testosterone (cFT), or calculated bioavailable testosterone (cBT) for partial androgen deficiency of the aging male (PADAM). The purpose of this study was to confirm whether hypogonadism of patients with PADAM is related to symptoms and clarify which criteria of testosterone recommended by ISSAM is suitable for Japanese patients. A total of 90 patients with PADAM symptoms were included in this study. Endocrinologic profiles were reviewed as appropriate, and PADAM symptoms were judged by means of several questionnaires. Laboratory values and symptoms were compared between patients with and without hypogonadism. Even when any criterion of testosterone was used for diagnosis of hypogonadism, AMS (total and subscales), IIEF-5, or SDS scores of PADAM symptoms did not differ significantly between patients classified as having and not having hypogonadism. No other endocrinologic variables than testosterone differed significantly between them, either. PADAM symptoms are not related to testosterone level and it is still obscure whether ISSAM's criterion can be adopted for Japanese patients with PADAM. Other pathology needs to be addressed for evaluation and diagnosis of PADAM in Japan.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan.
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42
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Fukuda K, Kaneko H, Matsumiya K. Slant perception produced by vertical and horizontal size disparities with short duration. J Vis 2004. [DOI: 10.1167/4.8.587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Takahara S, Ichimaru N, Kojima Y, Namba Y, Toki K, Shi Y, Yoshimura K, Matsumiya K, Nonomura N, Okuyama A. Investigation of the pharmacokinetics of cyclosporine in patients following long-term administration after a kidney transplant: comparison of neoral and sandimmune. Transplant Proc 2004; 36:456S-460S. [PMID: 15041387 DOI: 10.1016/j.transproceed.2004.01.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/26/2022]
Abstract
A crossover administration of Neoral and Sandimmune was performed in 43 renal allograft recipients who had been on cyclosporine maintenance therapy for 2 to 19 years posttransplant to investigate the pharmacokinetics of cyclosporine. Although there was no difference in C0 values (trough values) when Neoral and Sandimmune were administered at the same doses, AUC(0-4) and AUC(0-12) values of Neoral were 1.57- and 1.36-fold greater than those of Sandimmune, respectively. For both Neoral and Sandimmune, there was a high correlation between the C2 value and AUC(0-4). The Pearson's product-moment coefficient for the correlation between the C2 value and AUC(0-4) was R=0.91642. On the other hand, the correlation with the C0 value (trough value) was low (R=0.53181). During the period of the study, there was no acute rejection episode, onset of adverse drug reaction symptoms, or marked change in laboratory test values.
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Affiliation(s)
- S Takahara
- Osaka University, Graduate School of Medicine, Faculty of Medicine, Urology Department, Suita, Japan.
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Komori K, Tsujimura A, Miura H, Shin M, Takada T, Honda M, Matsumiya K, Fujioka H. Serial follow-up study of serum testosterone and antisperm antibodies in patients with non-obstructive azoospermia after conventional or microdissection testicular sperm extraction. ACTA ACUST UNITED AC 2004; 27:32-6. [PMID: 14718044 DOI: 10.1046/j.0105-6263.2003.00443.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [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
Testicular sperm extraction (TESE) combined with intracytoplasmic sperm injection is becoming a first-line treatment even for non-obstructive azoospermia. The current focus of TESE is the identification of seminiferous tubules that contain spermatozoa and minimization of testicular damage. Although microdissection TESE has been introduced as a preferred procedure for sperm retrieval, no serial follow-up studies of testicular damage have been reported. In the present study, we assayed serum testosterone concentrations and for the presence of antisperm antibodies (ASA) for 1 year after conventional multiple TESE or microdissection TESE and compared postoperative testicular damage between procedures. Thirteen patients who underwent conventional multiple TESE and 12 patients who underwent microdissection TESE were included in this study. Serum total and free testosterone concentrations were evaluated before operation and 1, 6 and 12 months after TESE. Serum ASA was also evaluated before and 12 months after TESE. Serum total and free testosterone concentrations in all patients in both groups showed no significant postoperative decrease. A comparison between the two groups of serum total and free testosterone concentrations showed no significant difference (total testosterone, p = 0.2477; free testosterone, p = 0.3098). No incidence of new ASA formation was identified in the present study. In conclusion, TESE procedures cause neither a decrease of serum testosterone nor formation of ASA. Serum testosterone concentration are similar between patients in the conventional multiple TESE and microdissection groups. Therefore, microdissection TESE is safe with respect to testicular damage, particularly for patients with hypogonadism.
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Affiliation(s)
- K Komori
- Department of Urology, Osaka Police Hospital, Osaka, Japan
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Tsujimura A, Matsumiya K, Miyagawa Y, Tohda A, Miura H, Nishimura K, Koga M, Takeyama M, Fujioka H, Okuyama A. Conventional multiple or microdissection testicular sperm extraction: a comparative study. Hum Reprod 2002; 17:2924-9. [PMID: 12407050 DOI: 10.1093/humrep/17.11.2924] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.0] [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: 11/15/2022] Open
Abstract
BACKGROUND Testicular sperm extraction (TESE) with ICSI is becoming the first-line treatment for non-obstructive azoospermia (NOA). Recently, the sperm retrieval rate (SRR) by microdissection TESE was reported to be higher than by conventional TESE. However, a comprehensive comparison between multiple and microdissection TESE patients including histological findings has not been reported. METHODS Patients with NOA who underwent microdissection TESE (n = 56) or multiple TESE (n = 37) were compared. Pre-operative characteristics were similar between groups. In addition, microscopic findings during microdissection TESE also were investigated. RESULTS Operative time was significantly longer for microdissection TESE than for multiple TESE. Histological examination suggested that spermatogenesis was relatively more impaired in the microdissection TESE group than in the multiple TESE group. Despite this, SRR by microdissection TESE (42.9%) appeared higher than by conventional TESE (35.1%) although this observation failed to reach statistical significance. Seventeen of 26 patients (65.4%) with heterogeneous tubule were successful for sperm retrieval. No severe operative complications occurred in any patient in either group, and no patient required post-operative hormone replacement to treat hypogonadism. CONCLUSIONS Microsurgical technique is safe and may improve SRR for TESE in a variety of patients with NOA, especially patients with heterogeneous testicular tubules.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
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Tsujimura A, Matsumiya K, Tsuboniwa N, Yamanaka M, Miura H, Kitamura M, Kishikawa H, Nishimura K, Ichikawa Y, Nagano S, Kokado Y, Takahara S, Okuyama A. Effect of renal transplantation on sexual function. Arch Androl 2002; 48:467-74. [PMID: 12425764 DOI: 10.1080/01485010290099381] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This investigation was conducted to determine whether renal transplantation can improve sexual function in male patients with chronic renal failure. The authors retrospectively studied 121 men undergoing renal transplantation who complained of any type or degree of sexual dysfunction pre-operatively. Sexual function was evaluated by questionnaire which included erectile, ejaculative, and orgasmic functions. Pre- and postoperative frequency of sexual intercourse was also recorded. Patient characteristics, laboratory data, and endocrinologic profiles were analyzed to identify factors that might influence sexual function. In patients with hormonal determinations, results essentially normalized after transplantation. However, only 43 patients (35.5%) reported improvement of overall sexual function after renal transplantation, while 34 (28.1%) reported worsening. Although frequency of sexual intercourse was unaffected by transplantation, 15 of 20 patients who had no intercourse before transplantation initiated intercourse afterward. These 15 patients all underwent transplantation before 40 years of age. Comparisons of variables by sexual function showed significant differences for type of immunosuppressive treatment, interval after renal transplantation, and serum concentration of hemoglobin A1c. It is concluded that renal transplantation cannot improve sexual function in all patients, although hormonal profiles were largely normalized, and that renal transplantation should be encouraged at a younger age.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Matsuzaka Y, Makino S, Okamoto K, Oka A, Tsujimura A, Matsumiya K, Takahara S, Okuyama A, Sada M, Gotoh R, Nakatani T, Ota M, Katsuyama Y, Tamiya G, Inoko H. Susceptibility locus for non-obstructive azoospermia is localized within the HLA-DR/DQ subregion: primary role of DQB1*0604. Tissue Antigens 2002; 60:53-63. [PMID: 12366783 DOI: 10.1034/j.1399-0039.2002.600107.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Non-obstructive azoospermia is a male infertility characterized by no or little sperm in semen as a result of a congenital dysfunction in spermatogenesis. Previous studies have reported a higher prevalence of particular human leukocyte antigen (HLA) antigens in non-obstructive azoospermia. As the expression of the RING3 gene located in the HLA class II region was predominant in the testis, mainly around spermatids and pachytene spermatocytes, it is tempting to speculate that RING3 is one of the strong candidate genes responsible for the pathogenesis of the disease. In this study, the genetic polymorphism in the RING3 gene was investigated by the direct sequencing technique. As a result, a total of 14 single nucleotide polymorphisms were identified. Among them, six were localized in the coding region but none of them was accompanied by an amino-acid substitution. No significant difference in the allelic distribution at these 14 polymorphic sites was observed between the patients and healthy controls, suggesting that the susceptible gene for non-obstructive azoospermia is not the RING3 gene. Then, in order to map the susceptibility locus for non-obstructive azoospermia precisely within the HLA region, 11 polymorphic microsatellite markers distributed from the SACM2L gene just outside the HLA class II region (187 kb telomeric of the DPB1 gene) to the OTF3 gene in the HLA class I region were subjected to association analysis in the patients. Statistical analysis of distribution in the allelic frequency at each microsatellite locus demonstrated that the pathogenic gene for non-obstructive azoospermia is located within the HLA-DR/DQ subregion. In fact, DRB1*1302 and DQB1*0604 were found to be strongly associated with non-obstructive azoospermia by polymerase chain reaction-based DNA typing. Further, haplotype analysis suggested that the DQB1*0604 allele may play a decisive role in the pathogenesis of non-obstructive azoospermia.
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Affiliation(s)
- Y Matsuzaka
- Department of Molecular life Science, Tokai University School of Medicine, Ishehara, Kanagwa, Japan
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Tsujimura A, Matsumiya K, Koga M, Miura H, Nishimura K, Kitamura M, Kondoh N, Takeyama M, Takahara S, Okuyama A. Outcome of surgical treatment for obstructive azoospermia. Arch Androl 2002; 48:29-36. [PMID: 11789680 DOI: 10.1080/014850102753385189] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The efficacy of reanastomosis was evaluated in 30 patients with obstructive azoospermia, including 19 postvasectomy cases; 7 cases complicating inguinal herniorrhaphy; 2 cases with a characterized isolated congenital anomaly; 1 case of Young's syndrome; and 1 case with an unknown, possibly congenital cause. In the postvasectomy group. successful vasovasostomy was achieved in 15 of 18 cases (83.3%; 1 postvasectomy patient dropped out of the study prior to analysis). Duration of obstruction in the 3 cases where anastomosis failed was 6, 9, and 20 years. In the group where obstruction followed inguinal herniorrhaphy, unilateral vasovasostomy was performed in 6 cases, and transepididymovasostomy was performed in 1 case. Success was achieved in 3 of 6 cases (50%; 1 case was not included because failure of spermatogenesis was detected postoperatively). In all 4 remaining cases, microsurgical epididymovasostomy or transepididymovasostomy was performed, but success was achieved only in the case of Young's syndrome. Although mailed questionnaires and telephone interviews indicated occurrence of natural pregnancy in only 4 affected couples, postoperative sperm counts were relatively satisfactory as in previous reports.
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Affiliation(s)
- A Tsujimura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
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Abstract
OBJECTIVE Laparoscopy has become one of the important diagnostic modalities of nonpalpable testis and has been developed and applied in the treatment of this disease. In the present study, we investigated the usefulness of laparoscopy in the diagnosis and treatment of nonpalpable testis. METHODS Laparoscopy was carried out under general anesthesia on 21 patients (23 testes) from October 1991 to October 1999. If the internal spermatic vessels and vas deferens made their way into the internal inguinal ring, the inguinal canal was dissected with an incision in the inguinal region to look for the testis. Patients with intra-abdominal testis underwent laparoscopic orchiopexy or orchiectomy. If the internal spermatic vessels terminated with a blind end intraperitoneally, making it impossible to identify the testis, the case was judged to be vanishing testis and the operation was finalized without any further examination. RESULTS In eight of 23 testes (35%), the internal spermatic vessels and vas deferens made their way into the internal inguinal ring. The inguinal region was examined in all the eight testes. Orchiopexy was carried out on two testes and orchiectomy was carried out on six testes. An intra-abdominal testis was detected in eight of 23 testes (35%). Laparoscopic orchiopexy was carried out on seven testes. One-stage orchiopexy was carried out on two of the seven testes and two-stage Fowler-Stephens orchiopexy was carried out on five of the seven testes. Orchiectomy was carried out on the remaining testis. Blocking or lack of the internal spermatic vessels and vas deferens was seen in seven of the 23 testes (30%) and this condition was diagnosed as vanishing testis. CONCLUSION Laparoscopy for nonpalpable testis is considered to be the most effective technique for diagnosing the presence or absence of the testis and the location of the testis.
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Affiliation(s)
- M Tsujihata
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan.
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Miura H, Nishimura K, Tsujimura A, Matsumiya K, Matsumoto K, Nakamura T, Okuyama A. Effects of hepatocyte growth factor on E-cadherin-mediated cell-cell adhesion in DU145 prostate cancer cells. Urology 2001; 58:1064-9. [PMID: 11744496 DOI: 10.1016/s0090-4295(01)01427-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 12/27/2022]
Abstract
OBJECTIVES To examine how hepatocyte growth factor (HGF) affects cell-cell adhesion junctions on scattering in prostate cancer cells. HGF is known to induce scattering (dispersion of clustered cells into single cells) in various epithelial cells, including prostate cancer cells, but the mechanisms surrounding this action are not fully understood. Cell-cell adhesion junctions are composed of E-cadherin and its associated intracellular catenins and play important roles in the maintenance of cell integrity. METHODS The human prostate cancer cell line DU145 was used in this study. The associations and changes of various adhesion molecules with HGF treatment were investigated by inhibition assays, Western blot analysis, and immunofluorescence staining. RESULTS In the inhibition assay, anti-E-cadherin neutralizing monoclonal antibody caused the dissociation of DU145 cells similar to the scattering with HGF treatment. The expression of E-cadherin decreased with HGF, and the expression of alpha-catenin and beta-catenin did not change by Western blot analysis. In immunofluorescence staining, HGF caused the translocation of E-cadherin from cell-cell adhesion junctions to the cytoplasm. CONCLUSIONS These results indicate that HGF induces scattering by decreasing the expression of E-cadherin and causes its translocation to the cytoplasm of DU145 cells.
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Affiliation(s)
- H Miura
- Department of Specific Organ Regulation (Urology), Osaka University Graduate School of Medicine, Suita, Japan
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