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Sato F, Sonohara T, Fujiki S, Sugawara A, Morishita Y, Ozaki T, Asai T. Genome mining of labdane-related diterpenoids: Discovery of the two-enzyme pathway leading to (-)-sandaracopimaradiene in the fungus Arthrinium sacchari. Beilstein J Org Chem 2024; 20:714-720. [PMID: 38590534 PMCID: PMC10999977 DOI: 10.3762/bjoc.20.65] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/18/2024] [Indexed: 04/10/2024] Open
Abstract
Labdane-related diterpenoids (LRDs) in fungi are a pharmaceutically important, but underexplored family of natural products. In the biosynthesis of fungal LRDs, bifunctional terpene cyclases (TCs) consisting of αβγ domains are generally used to synthesize the polycyclic skeletones of LRDs. Herein, we conducted genome mining of LRDs in our fungal genome database and identified a unique pair of TCs, AsPS and AsCPS, in the fungus Arthrinium sacchari. AsPS consists of catalytically active α and inactive β domains, whereas AsCPS contains βγ domains and a truncated α domain. Heterologous expression in Aspergillus oryzae and biochemical characterization of recombinant proteins demonstrated that AsCPS synthesized copalyl diphosphate and that AsPS then converted it to (-)-sandaracopimaradiene. Since AsPS and AsCPS have distinct domain organizations from those of known fungal TCs and are likely generated through fusion or loss of catalytic domains, our findings provide insight into the evolution of TCs in fungi.
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Affiliation(s)
- Fumito Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Terutaka Sonohara
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Shunta Fujiki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Akihiro Sugawara
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Yohei Morishita
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Taro Ozaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Teigo Asai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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2
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Furumura S, Ozaki T, Sugawara A, Morishita Y, Tsukada K, Ikuta T, Inoue A, Asai T. Identification and Functional Characterization of Fungal Chalcone Synthase and Chalcone Isomerase. J Nat Prod 2023; 86:398-405. [PMID: 36762727 PMCID: PMC9972472 DOI: 10.1021/acs.jnatprod.2c01027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Indexed: 05/23/2023]
Abstract
By mining fungal genomic information, a noncanonical iterative type I PKS fused with an N-terminal adenylation-thiolation didomain, which catalyzes the formation of naringenin chalcone, was found. Structural prediction and molecular docking analysis indicated that a C-terminal thioesterase domain was involved in the Claisen-type cyclization. An enzyme responsible for formation of (2S)-flavanone in the biosynthesis of fungal flavonoids was also identified. Collectively, these findings demonstrate unprecedented fungal biosynthetic machinery leading to plant-like metabolites.
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Kimishima A, Ando H, Sennari G, Noguchi Y, Sekikawa S, Kojima T, Ohara M, Watanabe Y, Inahashi Y, Takada H, Sugawara A, Matsumaru T, Iwatsuki M, Hirose T, Sunazuka T. Chemical Degradation-Inspired Total Synthesis of the Antibiotic Macrodiolide, Luminamicin. J Am Chem Soc 2022; 144:23148-23157. [DOI: 10.1021/jacs.2c10856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Aoi Kimishima
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroyasu Ando
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Goh Sennari
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yoshihiko Noguchi
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Shogo Sekikawa
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toru Kojima
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Motoyoshi Ohara
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yoshihiro Watanabe
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yuki Inahashi
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hirokazu Takada
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Akihiro Sugawara
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takanori Matsumaru
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masato Iwatsuki
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tomoyasu Hirose
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toshiaki Sunazuka
- O̅mura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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4
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Homma Y, Sugawara A, Morishita Y, Tsukada K, Ozaki T, Asai T. Discovery of a Cyclic Depsipeptide from Chaetomium mollipilium by the Genome Mining Approach. Org Lett 2022; 24:3504-3509. [PMID: 35543719 DOI: 10.1021/acs.orglett.2c01172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Genome mining and bioinformatics analyses allowed us to rationally find a candidate biosynthetic gene cluster for a new cyclic depsipeptide of Chaetomium mollipilium. A heterologous reconstitution of the identified biosynthetic pathway predictably afforded a new cyclic depsipeptide composed of l-leucine, l-tryptophan, and a polyketide moiety. Interestingly, the 10-membered macrocycle structure generated equilibrium to an unprecedented cyclol structure. This study demonstrates the advantage of a synthetic biology method in achieving rational access to new natural products.
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Affiliation(s)
- Yuto Homma
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Akihiro Sugawara
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yohei Morishita
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Kento Tsukada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Taro Ozaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Teigo Asai
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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5
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Suzuki Y, Ichinohe K, Sugawara A, Kida S, Murase S, Zhang J, Yamada O, Hattori T, Oshima Y, Kikuchi H. Development of Indole Alkaloid-Type Dual Immune Checkpoint Inhibitors Against CTLA-4 and PD-L1 Based on Diversity-Enhanced Extracts. Front Chem 2021; 9:766107. [PMID: 34858943 PMCID: PMC8630621 DOI: 10.3389/fchem.2021.766107] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
Cancer immunotherapy involves the use of the immune system for cancer treatment. Recently, immune checkpoint-blocking antibodies have become integral for the treatment of some cancers. However, small molecules exhibit advantages over monoclonal antibody drugs, such as cell penetration, long half-life, and low manufacturing costs, and the possibility of oral administration. Thus, it is imperative to develop small-molecule immune checkpoint inhibitors. Previously, we have screened a library of synthetic indole-alkaloid-type compounds, which are produced by diversity-enhanced extracts of Japanese cornelian cherry, and reported that an unnatural pentacyclic compound inhibits CTLA-4 gene expression. In this study, immune checkpoint inhibitors with increased potency were developed by introducing substituents and conversion of functional groups based on the unnatural pentacyclic compound. The developed compounds suppressed not only CTLA-4 and PD-L1 gene expression but also protein expression on the cell surface. Their efficacy was not as potent as that of the existing small-molecule immune checkpoint inhibitors, but, to the best of our knowledge, the developed compounds are the first reported dual small-molecule inhibitors of CTLA-4 and PD-L1.
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Affiliation(s)
- Yoshihide Suzuki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Keisuke Ichinohe
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Akihiro Sugawara
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Shinya Kida
- Research and Development Center, FUSO Pharmaceutical Industries, Ltd., Osaka, Japan
| | - Shinya Murase
- Research and Development Center, FUSO Pharmaceutical Industries, Ltd., Osaka, Japan
| | - Jing Zhang
- Research and Development Center, FUSO Pharmaceutical Industries, Ltd., Osaka, Japan
| | - Osamu Yamada
- Research and Development Center, FUSO Pharmaceutical Industries, Ltd., Osaka, Japan
| | - Toshio Hattori
- Research Institute of Health and Welfare, Kibi International University, Takahashi, Japan
| | - Yoshiteru Oshima
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Haruhisa Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.,Division of Natural Medicines, Faculty of Pharmacy, Keio University, Tokyo, Japan
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6
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Soma Y, Mori K, Noguchi Y, Kimura S, Fujiwara Y, Yamamoto Y, Itou Y, Okawa T, Murakami M, Matsuo K, Tanaka S, Mori N, Sugawara A. POS-161 A CASE OF EGPA THAT DEVELOPED DURING REMISSION OF IGA NEPHROPATHY. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.171] [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] Open
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7
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Sugawara A, Takada H, Hirose T, Kimishima A, Yamada T, Toda M, Kojima T, Matsumaru T, Sunazuka T. Pd-catalyzed Regio- and Stereoselective Hydrostannylation of an Alkyl Ethynyl Ether/One-Pot Stille Coupling Enables the Synthesis of 14-Membered Macrolactone of Luminamicin. Org Lett 2021; 23:1758-1763. [PMID: 33591766 DOI: 10.1021/acs.orglett.1c00183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regio- and stereoselective hydrostannylation of alkyl ethynyl ethers generates alkenyl ethers, which are useful building blocks in organic synthesis. This efficient synthetic method, however, is limited. Here, we report not only an efficient method for a highly regio- and stereoselective Pd-catalyzed hydrostannylation of alkyl ethynyl ethers but also a scalable synthesis and construction of the core framework of luminamicin possessing all functional groups and stereocenters.
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Affiliation(s)
- Akihiro Sugawara
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hirokazu Takada
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tomoyasu Hirose
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Aoi Kimishima
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takeshi Yamada
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masaki Toda
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toru Kojima
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takanori Matsumaru
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toshiaki Sunazuka
- Omura Satoshi Memorial Institute and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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8
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Sasaki H, Kubohara Y, Ishigaki H, Takahashi K, Eguchi H, Sugawara A, Oshima Y, Kikuchi H. Two New Terpenes Isolated from Dictyostelium Cellular Slime Molds. Molecules 2020; 25:molecules25122895. [PMID: 32585998 PMCID: PMC7356884 DOI: 10.3390/molecules25122895] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 12/22/2022] Open
Abstract
We report a protoilludane-type sesquiterpene, mucoroidiol, and a geranylated bicyclogermacranol, firmibasiol, isolated from Dictyostelium cellular slime molds. The methanol extracts of the fruiting bodies of cellular slime molds were separated by chromatographic methods to give these compounds. Their structures have been established by several spectral means. Mucoroidiol and firmibasiol are the first examples of more modified and oxidized terpenoids isolated from cellular slime molds. Mucoroidiol showed moderate osteoclast-differentiation inhibitory activity despite demonstrating very weak cell-proliferation inhibitory activity. Therefore, cellular slime molds produce considerably diverse secondary metabolites, and they are promising sources of new natural product chemistry.
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Affiliation(s)
- Hitomi Sasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; (H.S.); (H.E.); (A.S.); (Y.O.)
| | - Yuzuru Kubohara
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hiraga-gakuendai, Inzai, Chiba 270-1695, Japan;
| | - Hirotaka Ishigaki
- Department of Medical Technology, Faculty of Health Science, Gunma Paz University, Takasaki 370-0006, Japan; (H.I.); (K.T.)
| | - Katsunori Takahashi
- Department of Medical Technology, Faculty of Health Science, Gunma Paz University, Takasaki 370-0006, Japan; (H.I.); (K.T.)
| | - Hiromi Eguchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; (H.S.); (H.E.); (A.S.); (Y.O.)
| | - Akihiro Sugawara
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; (H.S.); (H.E.); (A.S.); (Y.O.)
| | - Yoshiteru Oshima
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; (H.S.); (H.E.); (A.S.); (Y.O.)
| | - Haruhisa Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; (H.S.); (H.E.); (A.S.); (Y.O.)
- Correspondence: ; Tel.: +81-22-795-6824
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9
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Tran DH, Sugamata R, Hirose T, Suzuki S, Noguchi Y, Sugawara A, Ito F, Yamamoto T, Kawachi S, Akagawa KS, Ōmura S, Sunazuka T, Ito N, Mimaki M, Suzuki K. Azithromycin, a 15-membered macrolide antibiotic, inhibits influenza A(H1N1)pdm09 virus infection by interfering with virus internalization process. J Antibiot (Tokyo) 2019; 72:759-768. [PMID: 31300721 DOI: 10.1038/s41429-019-0204-x] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/29/2019] [Accepted: 06/06/2019] [Indexed: 02/07/2023]
Abstract
The pandemic influenza 2009 (A(H1N1)pdm09) virus currently causes seasonal and annual epidemic outbreaks. The widespread use of anti-influenza drugs such as neuraminidase and matrix protein 2 (M2) channel inhibitors has resulted in the emergence of drug-resistant influenza viruses. In this study, we aimed to determine the anti-influenza A(H1N1)pdm09 virus activity of azithromycin, a re-positioned macrolide antibiotic with potential as a new anti-influenza candidate, and to elucidate its underlying mechanisms of action. We performed in vitro and in vivo studies to address this. Our in vitro approaches indicated that progeny virus replication was remarkably inhibited by treating viruses with azithromycin before infection; however, azithromycin administration after infection did not affect this process. We next investigated the steps inhibited by azithromycin during virus invasion. Azithromycin did not affect attachment of viruses onto the cell surface, but blocked internalization into host cells during the early phase of infection. We further demonstrated that azithromycin targeted newly budded progeny virus from the host cells and inactivated their endocytic activity. This unique inhibitory mechanism has not been observed for other anti-influenza drugs, indicating the potential activity of azithromycin before and after influenza virus infection. Considering these in vitro observations, we administered azithromycin intranasally to mice infected with A(H1N1)pdm09 virus. Single intranasal azithromycin treatment successfully reduced viral load in the lungs and relieved hypothermia, which was induced by infection. Our findings indicate the possibility that azithromycin could be an effective macrolide for the treatment of human influenza.
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Affiliation(s)
- Dat Huu Tran
- Department of Health Protection, Graduate School of Medicine, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Ryuichi Sugamata
- Department of Health Protection, Graduate School of Medicine, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,General Medical Education and Research Center (G-MEC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Tomoyasu Hirose
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Shoichi Suzuki
- Department of Health Protection, Graduate School of Medicine, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,General Medical Education and Research Center (G-MEC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Yoshihiko Noguchi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Akihiro Sugawara
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan.,Graduate School of Pharmaceutical Sciences, Tohoku University, Aza-Aoba 6-3, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Fuyu Ito
- Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Tomoko Yamamoto
- Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Shoji Kawachi
- Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.,General Medical Education and Research Center (G-MEC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Kiyoko S Akagawa
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Shirokane 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Naoki Ito
- The Pediatric Department, Teikyo Hospital University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Masakazu Mimaki
- The Pediatric Department, Teikyo Hospital University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Kazuo Suzuki
- Department of Health Protection, Graduate School of Medicine, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan. .,Asia International Institute of Infectious Disease Control (ADC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan. .,General Medical Education and Research Center (G-MEC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 173-8605, Japan.
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10
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Matsumoto Y, Kabuki S, Sugawara A, Kitahara T, Akiba T, Fujita Y, Kawamata I, Yamada K, Amino K, Sasaki Y, Nishida M, Murakami K, Sugahara K, Saito N, Kunieda E. Basic evaluation of a novel 4D target and human body phantom. Phys Med Biol 2019; 64:145002. [PMID: 31146274 DOI: 10.1088/1361-6560/ab259c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Stereotactic body radiation therapy (SBRT) is usually verified with a dynamic phantom or solid phantom, but there is a demand for phantoms that can accurately simulate tumor dynamics within an individual that would allow customized validation in every patient. We developed a new 4D dynamic target phantom (multi-cell 4D phantom) that allows simulation of tumor movement in patients. The basic quality and dynamic reproducibility of this new phantom was verified in this investigation. The newly developed multi-cell 4D phantom comprises four main components: soft tissue, bones, lungs, and tumor (target). The phantom structure was based on computed tomography (CT) data of a male. In this study, we investigated the basic performance of a multi-cell 4D phantom. All the CT numbers of the phantom were very close to those of human data. The geometric maximum amplitudes were 4.57 mm in the lateral direction, 4.59 mm in the ventrodorsal direction, and 3.68 mm in the cranio-caudal direction. Geometric errors were 0.84, 0.58, and 0.40 mm, respectively. Movements of the abdominal surface were stable for 60 s. Repeated measurements show no actual differences in target movements between multiple measurements and indicated high reproducibility (r > 0.97). End-to-end tests using Gafchromic film revealed a gamma pass rate of 98% or above (2 mm/3%). Although our phantom performed limited reproducibility in the movement of the patient tumor at present, a satisfactory level of precision was confirmed in general. This is a very promising device for use in the verification of radiation therapy for moving targets.
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Affiliation(s)
- Y Matsumoto
- Department of Radiation Oncology, Tokai University Hachioji Hospital, Hachioji, Tokyo, 192-0032, Japan. Author to whom correspondence should be addressed
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11
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Watanabe M, Sugawara A, Noguchi Y, Hirose T, Ōmura S, Sunazuka T, Horie R. Jietacins, azoxy natural products, as novel NF-κB inhibitors: Discovery, synthesis, biological activity, and mode of action. Eur J Med Chem 2019; 178:636-647. [PMID: 31226655 DOI: 10.1016/j.ejmech.2019.05.079] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 04/05/2019] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022]
Abstract
Deregulation of NF-κB plays an important role in various diseases by controlling cell growth, inflammation, the immune response, and cytokine production. Although many NF-κB inhibitors have been developed, to the best of our knowledge, none of them have been successfully translated into clinical practice as medicines. To overcome this issue, we aimed to develop a new class of NF-κB inhibitors. Previous reports indicated that the N-terminal cysteine is a promising target for NF-κB. Based on this, we first selected 10 natural products or their derivatives from the natural product library that we developed and examined the effect on NF-κB and the viability of cancer cells with constitutively strong NF-κB activity. Among them, we found that an azoxy natural product, jietacin A, with a vinylazoxy group and an aliphatic side chain, reduced cell viability and inhibited nuclear translocation of free NF-κB. In addition, we performed design, synthesis, and biological evaluation of jietacin derivatives for development of a novel NF-κB inhibitor. Of these derivatives, a fully synthesized derivative 25 with vinylazoxy and ynone groups had a potent effect. We clarified the structure-activity relationship of this compound. Jietacin A and 25 also inhibited tumor necrosis factor-α-mediated induction of NF-κB. The NF-κB inhibitory effect depended on the N-terminal cysteine and the neighboring Arg-Ser-Ala-Gly-Ser-Ile (RSAGSI) domain of NF-κB. We also found that 25 inhibited the association between NF-κB and importin α, suggesting inhibition of NF-κB at an early step of nuclear translocation. Overall, this study indicated that the vinylazoxy motif may compose a new class of NF-κB inhibitors, providing further insight for rational drug design and rendering a unique mode of action.
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Affiliation(s)
- Mariko Watanabe
- Division of Hematology, Department of Laboratory Sciences, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan; Department of Molecular Hematology, Faculty of Molecular Medical Biology, Graduate School of Medical Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Akihiro Sugawara
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Yoshihiko Noguchi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Tomoyasu Hirose
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Ryouichi Horie
- Division of Hematology, Department of Laboratory Sciences, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan; Department of Molecular Hematology, Faculty of Molecular Medical Biology, Graduate School of Medical Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan.
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12
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Lu M, Ma X, Castillo-Menendez LR, Gorman J, Alsahafi N, Ermel U, Terry DS, Chambers M, Peng D, Zhang B, Zhou T, Reichard N, Wang K, Grover JR, Carman BP, Gardner MR, Nikić-Spiegel I, Sugawara A, Arthos J, Lemke EA, Smith AB, Farzan M, Abrams C, Munro JB, McDermott AB, Finzi A, Kwong PD, Blanchard SC, Sodroski JG, Mothes W. Associating HIV-1 envelope glycoprotein structures with states on the virus observed by smFRET. Nature 2019; 568:415-419. [PMID: 30971821 PMCID: PMC6655592 DOI: 10.1038/s41586-019-1101-y] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 03/08/2019] [Indexed: 11/09/2022]
Abstract
The HIV-1 envelope glycoprotein (Env) trimer mediates cell entry and is
conformationally dynamic1–8. Imaging
by single-molecule fluorescence resonance energy transfer (smFRET) has revealed
that, on the surface of intact virions, mature pre-fusion Env transitions from a
pre-triggered conformation (state 1) through a default intermediate conformation
(state 2) to a conformation in which it is bound to three CD4 receptor molecules
(state 3)8–10. It is currently unclear how these
states relate to known structures. Breakthroughs in the structural
characterization of the HIV-1 Env trimer have previously been achieved by
generating soluble and proteolytically cleaved trimers of gp140 Env that are
stabilized by a disulfide bond, an isoleucine-to-proline substitution at residue
559 and a truncation at residue 664 (SOSIP.664 trimers)5,11–18.
Cryo-electron microscopy studies have been performed with C-terminally truncated
Env of the HIV-1JR-FL strain in complex with the antibody PGT15119. Both approaches have revealed similar
structures for Env. Although these structures have been presumed to represent
the pre-triggered state 1 of HIV-1 Env, this hypothesis has never directly been
tested. Here we use smFRET to compare the conformational states of Env trimers
used for structural studies with native Env on intact virus. We find that the
constructs upon which extant high-resolution structures are based predominantly
occupy downstream conformations that represent states 2 and 3. Therefore, the
structure of the pretriggered state-1 conformation of viral Env that has been
identified by smFRET and that is preferentially stabilized by many broadly
neutralizing antibodies—and thus of interest for the design of
immunogens—remains unknown.
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Affiliation(s)
- Maolin Lu
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Xiaochu Ma
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Luis R Castillo-Menendez
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Microbiology, Harvard Medical School, Boston, MA, USA
| | - Jason Gorman
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Nirmin Alsahafi
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada.,Centre de Recherche du CHUM (CRCHUM), Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | - Utz Ermel
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Daniel S Terry
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Michael Chambers
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Dongjun Peng
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Baoshan Zhang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Tongqing Zhou
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Nick Reichard
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Kevin Wang
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Jonathan R Grover
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Brennan P Carman
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Matthew R Gardner
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL, USA
| | - Ivana Nikić-Spiegel
- Werner Reichardt Centre for Integrative Neuroscience, University of Tuebingen, Tuebingen, Germany
| | - Akihiro Sugawara
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
| | - James Arthos
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Edward A Lemke
- Departments of Biology and Chemistry, Pharmacy and Geosciences, Johannes Gutenberg University Mainz, Mainz, Germany.,Institute of Molecular Biology (IMB), Johannes Gutenberg University Mainz, Mainz, Germany.,Structural and Computational Biology Unit and Cell Biology and Biophysics Unit, EMBL, Heidelberg, Germany
| | - Amos B Smith
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael Farzan
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL, USA
| | - Cameron Abrams
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, USA
| | - James B Munro
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, MA, USA
| | - Adrian B McDermott
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Andrés Finzi
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada.,Centre de Recherche du CHUM (CRCHUM), Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | - Peter D Kwong
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Scott C Blanchard
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA.
| | - Joseph G Sodroski
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA, USA. .,Department of Microbiology, Harvard Medical School, Boston, MA, USA.
| | - Walther Mothes
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA.
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13
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Iuamoto L, Numakura G, Guedes T, Sugawara A, Imamura M, Battistella L. Physical medicine and rehabilitation league of Faculdade de Medicina da Universidade de Sao Paulo: An innovative model of undergraduate teaching and learning. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1218] [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: 11/26/2022]
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14
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Sugawara A, Kubo M, Hirose T, Yahagi K, Tsunoda N, Noguchi Y, Nakashima T, Takahashi Y, Welz C, Mueller D, Mertens C, Koebberling J, Ōmura S, Sunazuka T. Jietacins, azoxy antibiotics with potent nematocidal activity: Design, synthesis, and biological evaluation against parasitic nematodes. Eur J Med Chem 2017; 145:524-538. [PMID: 29335213 DOI: 10.1016/j.ejmech.2017.12.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 10/14/2017] [Revised: 11/25/2017] [Accepted: 12/09/2017] [Indexed: 01/07/2023]
Abstract
Jietacins, an azoxy antibiotic class of chemicals, were isolated from the culture broth of Streptomyces sp. KP-197. They have a unique structural motif, including a vinyl azoxy group and a long acyclic aliphatic chain, which is usually branched but non-branched in the case of jietacin C. During a drug discovery program, we found that jietacins display potent anthelmintic activity against parasitic nematodes and that jietacin A has a moderate or low acute toxicity (LD50 > 300 mg/kg) and no mutagenic potential in a mini Ames screen. This suggests that jietacins have potential for drug discovery research. In order to create a novel anthelmintic agent, we performed design, synthesis, and biological evaluation of jietacin derivatives against parasitic nematodes. Of these derivatives, we found that a fully synthesized simplified derivative exhibited better anthelmintic activity against three parasitic nematodes than natural jietacins. In addition, it had a better efficacy in vivo through oral administration against a mouse nematode. This indicated that the azoxy motif could prove useful as a template for anthelmintic discovery, possibly creating a class of anthelmintic with novel skeletons, a potential new mode of action, and providing further insight for rational drug design.
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Affiliation(s)
- Akihiro Sugawara
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
| | - Masahiko Kubo
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Tomoyasu Hirose
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Kyoichi Yahagi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Noriaki Tsunoda
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Yoshihiko Noguchi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Takuji Nakashima
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Yoko Takahashi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Claudia Welz
- Bayer AG Drug Discovery Pharmaceuticals, Wuppertal, Berlin, Germany.
| | - Dennis Mueller
- Bayer AG Drug Discovery Pharmaceuticals, Wuppertal, Berlin, Germany.
| | | | | | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
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15
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Yoshimura M, Kunisawa T, Suno M, Sugawara A, Kurosawa A, Nakanishi R, Aoki K, Toriumi T. Intravenous dexmedetomidine for cesarean delivery and its concentration in colostrum. Int J Obstet Anesth 2017; 32:28-32. [DOI: 10.1016/j.ijoa.2017.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 04/18/2017] [Accepted: 05/04/2017] [Indexed: 01/23/2023]
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16
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Aoyama S, Miyazawa Y, Ogura K, Sugawara A, Hirata M. Improved Performance of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1390] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Aoyama
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Y. Miyazawa
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - A. Sugawara
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
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17
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Yamada T, Horimatsu Y, Hirose T, Sugawara A, Ōmura S, Sunazuka T. Stereo- and substituent-enabled divergent synthesis of 5,6-spiroketal analogs of avermectin containing a triazole function. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Ando H, Kimishima A, Ohara M, Hirose T, Matsumaru T, Takada H, Morodome K, Miyamoto T, Sugawara A, Ōmura S, Sunazuka T. Toward the total synthesis of luminamicin; an anaerobic antibiotic: construction of highly functionalized cis-decalin containing a bridged ether moiety. J Antibiot (Tokyo) 2017; 71:268-272. [PMID: 28676718 DOI: 10.1038/ja.2017.77] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 11/09/2022]
Abstract
Synthesis of a cis-decalin moiety, containing an oxa-bridged cis-decalin ring system (11-oxatricyclo(5.3.1.1,703,8)undecane), as a key intermediate of the total synthesis of luminamicin (1) was accomplished. One of the essential steps in our synthetic route is construction of a cis-decaline framework using a one-pot Michael addition-aldol reaction. Additionally, the bridged ether moiety was obtained by an intramolecular 1,6-oxa-Michael reaction of a conjugated aldehyde.
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Affiliation(s)
- Hiroyasu Ando
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Aoi Kimishima
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Motoyoshi Ohara
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Tomoyasu Hirose
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Takanori Matsumaru
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Hirokazu Takada
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Keisuke Morodome
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Takehiro Miyamoto
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Akihiro Sugawara
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Satoshi Ōmura
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Toshiaki Sunazuka
- Graduate School of Infection Control Sciences and Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
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19
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Sugawara A. Carolacton Possessing Biofilm-controlling Properties; Total Synthesis, Truncated Analog Synthesis, and Biological Phenomenon. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.1292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Mukai S, Moriya S, Hiramoto M, Kazama H, Kokuba H, Che XF, Yokoyama T, Sakamoto S, Sugawara A, Sunazuka T, Ōmura S, Handa H, Itoi T, Miyazawa K. Macrolides sensitize EGFR-TKI-induced non-apoptotic cell death via blocking autophagy flux in pancreatic cancer cell lines. Int J Oncol 2015; 48:45-54. [PMID: 26718641 PMCID: PMC4734605 DOI: 10.3892/ijo.2015.3237] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 10/15/2015] [Indexed: 01/05/2023] Open
Abstract
Pancreatic cancer is one of the most difficult types of cancer to treat because of its high mortality rate due to chemotherapy resistance. We previously reported that combined treatment with gefitinib (GEF) and clarithromycin (CAM) results in enhanced cytotoxicity of GEF along with endoplasmic reticulum (ER) stress loading in non-small cell lung cancer cell lines. An epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) such as GEF induces autophagy in a pro-survival role, whereas CAM inhibits autophagy flux in various cell lines. Pronounced GEF-induced cytotoxicity therefore appears to depend on the efficacy of autophagy inhibition. In the present study, we compared the effect on autophagy inhibition among such macrolides as CAM, azithromycin (AZM), and EM900, a novel 12-membered non-antibiotic macrolide. We then assessed the enhanced GEF-induced cytotoxic effect on pancreatic cancer cell lines BxPC-3 and PANC-1. Autophagy flux analysis indicated that AZM is the most effective autophagy inhibitor of the three macrolides. CAM exhibits an inhibitory effect but less than AZM and EM900. Notably, the enhancing effect of GEF-induced cytotoxicity by combining macrolides correlated well with their efficient autophagy inhibition. However, this pronounced cytotoxicity was not due to upregulation of apoptosis induction, but was at least partially mediated through necroptosis. Our data suggest the possibility of using macrolides as ‘chemosensitizers’ for EGFR-TKI therapy in pancreatic cancer patients to enhance non-apoptotic tumor cell death induction.
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Affiliation(s)
- Shuntaro Mukai
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Shota Moriya
- Department of Biochemistry, Tokyo Medical University, Tokyo, Japan
| | - Masaki Hiramoto
- Department of Biochemistry, Tokyo Medical University, Tokyo, Japan
| | - Hiromi Kazama
- Department of Biochemistry, Tokyo Medical University, Tokyo, Japan
| | - Hiroko Kokuba
- Laboratory of Electron Microscopy, Tokyo Medical University, Tokyo, Japan
| | - Xiao-Fang Che
- Department of Biochemistry, Tokyo Medical University, Tokyo, Japan
| | - Tomohisa Yokoyama
- Department of Clinical Oncology, Tokyo Medical University, Tokyo, Japan
| | - Satoshi Sakamoto
- Department of Biological Information, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Akihiro Sugawara
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan
| | - Hiroshi Handa
- Department of Nanoparticle Translational Research, Tokyo Medical University, Tokyo, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Keisuke Miyazawa
- Department of Biochemistry, Tokyo Medical University, Tokyo, Japan
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21
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Nakano H, Sugawara A, Hirose T, Gouda H, Hirono S, Ōmura S, Sunazuka T. An architectonic macrolide library based on a C2-symmetric macrodiolide toward pharmaceutical compositions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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22
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Yamada T, Ideguchi-Matsushita T, Hirose T, Shirahata T, Hokari R, Ishiyama A, Iwatsuki M, Sugawara A, Kobayashi Y, Otoguro K, Ōmura S, Sunazuka T. Asymmetric Total Synthesis of Indole Alkaloids Containing an Indoline Spiroaminal Framework. Chemistry 2015; 21:11855-64. [DOI: 10.1002/chem.201501150] [Citation(s) in RCA: 17] [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: 03/24/2015] [Indexed: 11/09/2022]
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23
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Sugawara A, Maita N, Gouda H, Yamamoto T, Hirose T, Kimura S, Saito Y, Nakano H, Kasai T, Nakano H, Shiomi K, Hirono S, Watanabe T, Taniguchi H, O̅mura S, Sunazuka T. Creation of Customized Bioactivity within a 14-Membered Macrolide Scaffold: Design, Synthesis, and Biological Evaluation Using a Family-18 Chitinase. J Med Chem 2015; 58:4984-97. [DOI: 10.1021/acs.jmedchem.5b00175] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Akihiro Sugawara
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Nobuo Maita
- Institute
for Enzyme Research, University of Tokushima, 3-18-15 Kuramotocho, Tokushima City, Tokushima, 770-8503, Japan
| | - Hiroaki Gouda
- School
of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tsuyoshi Yamamoto
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tomoyasu Hirose
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Saori Kimura
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yoshifumi Saito
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hayato Nakano
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takako Kasai
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hirofumi Nakano
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kazuro Shiomi
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Shuichi Hirono
- School
of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takeshi Watanabe
- Department
of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, 8050 Ikarashi-2, Niigata 950-2181, Japan
| | - Hisaaki Taniguchi
- Institute
for Enzyme Research, University of Tokushima, 3-18-15 Kuramotocho, Tokushima City, Tokushima, 770-8503, Japan
| | - Satoshi O̅mura
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toshiaki Sunazuka
- The
Kitasato Institute, Kitasato Institute for Life Sciences and Graduate
School of Infection Control Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Ishii T, Nonaka K, Sugawara A, Iwatsuki M, Masuma R, Hirose T, Sunazuka T, Ōmura S, Shiomi K. Cinatrins D and E, and virgaricin B, three novel compounds produced by a fungus, Virgaria boninensis FKI-4958. J Antibiot (Tokyo) 2015; 68:633-7. [DOI: 10.1038/ja.2015.45] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/27/2015] [Accepted: 03/31/2015] [Indexed: 11/09/2022]
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25
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Sugawara A, Kubo M, Nakashima T, Hirose T, Tsunoda N, Yahagi K, Asami Y, Yamada T, Shiomi K, Takahashi Y, Ōmura S, Sunazuka T. Jietacins with potent nematocidal activity; efficient isolation of novel analogs and divergent total synthesis of jietacin A, B, C, and D. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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Iwanaga N, Nakamura S, Oshima K, Kajihara T, Takazono T, Miyazaki T, Izumikawa K, Yanagihara K, Sugawara A, Sunazuka T, Omura S, Kohno S. Macrolides Promote CCL2-Mediated Macrophage Recruitment and Clearance of Nasopharyngeal Pneumococcal Colonization in Mice. J Infect Dis 2015; 212:1150-9. [PMID: 25767216 DOI: 10.1093/infdis/jiv157] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 09/16/2014] [Accepted: 03/05/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Streptococcus pneumoniae (pneumococcus) colonizes mucosal surfaces of the upper respiratory tract (URT), resulting in invasive disease. Macrolides are known for their immunomodulatory effects. We investigated the potency of macrolides to reduce pneumococcal colonization by activating host innate immunity. METHODS The kinetics of colonization, cellular response, and inflammatory cytokine levels in the URT were assessed after nasal inoculation of pneumococci. EM900 (a novel 12-membered nonantibiotic macrolide with an immunomodulatory effect) was orally administered throughout the experiment. Survival was evaluated for 10 days. Macrolide-mediated CCL2 production from peritoneal macrophages was determined by enzyme-linked immuosorbent assay. The cell-signaling pathway was analyzed by means of Western blotting and gene silencing assays. RESULTS Streptococcus pneumoniae was significantly reduced from EM900-treated mice 14 days after pneumococcal inoculation. Macrophage recruitment and Ccl2 messenger RNA expression were promoted. CCL2 production from peritoneal macrophages was significantly induced by macrolides and was dependent on NF-κB phosphorylation through the myeloid differentiation primary-response gene 88- or TIR domain-containing adapter-inducing interferon-β-mediated pathway. Mortality of mice with invasive pneumococcal disease was improved by pretreatment with EM900. CONCLUSIONS Macrolides may inhibit invasive pneumococcal infections by accelerating the clearance of pneumococcal nasopharyngeal colonization via promotion of macrophage-mediated innate immunity.
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Affiliation(s)
| | - Shigeki Nakamura
- Department of Respiratory Diseases Unit of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Sciences
| | | | | | | | | | - Koichi Izumikawa
- Department of Respiratory Diseases Unit of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Sciences
| | | | - Akihiro Sugawara
- Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
| | - Satoshi Omura
- Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
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Hiura H, Sugawara A, Ogawa H, John RM, Miyauchi N, Miyanari Y, Horiike T, Li Y, Yaegashi N, Sasaki H, Kono T, Arima T. A tripartite paternally methylated region within the Gpr1-Zdbf2 imprinted domain on mouse chromosome 1 identified by meDIP-on-chip. Nucleic Acids Res 2014; 42:10869. [PMID: 25016528 PMCID: PMC4176375 DOI: 10.1093/nar/gku624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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28
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Nakamura T, Yoshikawa T, Noguchi N, Sugawara A, Kasajima A, Sasano H, Yanai K. The expression and function of histamine H₃ receptors in pancreatic beta cells. Br J Pharmacol 2014; 171:171-85. [PMID: 24117016 DOI: 10.1111/bph.12429] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 09/06/2013] [Accepted: 09/16/2013] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND AND PURPOSE Histamine and its receptors in the CNS play important roles in energy homeostasis. Here, we have investigated the expression and role of histamine receptors in pancreatic beta cells, which secrete insulin. EXPERIMENTAL APPROACH The expression of histamine receptors in pancreatic beta cells was examined by RT-PCR, Western blotting and immunostaining. Insulin secretion assay, ATP measurement and calcium imaging studies were performed to determine the function and signalling pathway of histamine H₃ receptors in glucose-induced insulin secretion (GIIS) from MIN6 cells, a mouse pancreatic beta cell line. The function and signalling pathway of H₃ receptors in MIN6 cell proliferation were examined using pharmacological assay and Western blotting. KEY RESULTS Histamine H₃ receptors were expressed in pancreatic beta cells. A selective H₃ receptor agonist, imetit, and a selective inverse H₃ receptor agonist, JNJ-5207852, had inhibitory and facilitatory effects, respectively, on GIIS in MIN6 cells. Neither imetit nor JNJ-5207852 altered intracellular ATP concentration, or intracellular calcium concentration stimulated by glucose and KCl, indicating that GIIS signalling was affected by H3 receptor signalling downstream of the increase in intracellular calcium concentration. Moreover, imetit attenuated bromodeoxyuridine incorporation in MIN6 cells. The phosphorylation of cAMP response element-binding protein (CREB), which facilitated beta cell proliferation, was inhibited, though not significantly, by imetit, indicating that activated H₃ receptors inhibited MIN6 cell proliferation, possibly by decreasing CREB phosphorylation. CONCLUSIONS AND IMPLICATIONS Histamine H₃ receptors were expressed in mouse beta cells and could play a role in insulin secretion and, possibly, beta cell proliferation.
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Affiliation(s)
- T Nakamura
- Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
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29
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Kwon YD, LaLonde JM, Yang Y, Elban MA, Sugawara A, Courter JR, Jones DM, Smith AB, Debnath AK, Kwong PD. Crystal structures of HIV-1 gp120 envelope glycoprotein in complex with NBD analogues that target the CD4-binding site. PLoS One 2014; 9:e85940. [PMID: 24489681 PMCID: PMC3904841 DOI: 10.1371/journal.pone.0085940] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 12/05/2013] [Indexed: 11/19/2022] Open
Abstract
Efforts to develop therapeutic agents that inhibit HIV-1 entry have led to the identification of several small molecule leads. One of the most promising is the NBD series, which binds within a conserved gp120 cavity and possesses para-halogen substituted aromatic rings, a central oxalamide linker, and a tetramethylpiperidine moiety. In this study, we characterized structurally the interactions of four NBD analogues containing meta-fluoro substitution on the aromatic ring and various heterocyclic ring replacements of the tetramethylpiperidine group. The addition of a meta-fluorine to the aromatic ring improved surface complementarity and did not alter the position of the analogue relative to gp120. By contrast, heterocyclic ring replacements of the tetramethylpiperidine moiety exhibited diverse positioning and interactions with the vestibule of the gp120 cavity. Overall, the biological profile of NBD-congeners was modulated by ligand interactions with the gp120-cavity vestibule. Herein, six co-crystal structures of NBD-analogues with gp120 provide a structural framework for continued small molecule-entry inhibitor optimization.
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Affiliation(s)
- Young Do Kwon
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Judith M. LaLonde
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania, United States of America
| | - Yongping Yang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Mark A. Elban
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Akihiro Sugawara
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Joel R. Courter
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - David M. Jones
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Amos B. Smith
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Asim K. Debnath
- Laboratory of Molecular Modeling and Drug Design, Lindsey F. Kimball Research Institute of the New York Blood Center, New York, New York, United States of America
| | - Peter D. Kwong
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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30
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Ideguchi T, Yamada T, Shirahata T, Hirose T, Sugawara A, Kobayashi Y, O̅mura S, Sunazuka T. Asymmetric Total Synthesis of Neoxaline. J Am Chem Soc 2013; 135:12568-71. [DOI: 10.1021/ja406657v] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tetsuya Ideguchi
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Takeshi Yamada
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Tatsuya Shirahata
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Tomoyasu Hirose
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Akihiro Sugawara
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Yoshinori Kobayashi
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Satoshi O̅mura
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
| | - Toshiaki Sunazuka
- Graduate
School of Infection Control Sciences, ‡Kitasato Institute for Life Sciences, and §School of Pharmacy, Kitasato University, 5-9-1 Shirokane,
Minato-ku, Tokyo 108-8641, Japan
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31
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Wakasugi M, Gouda H, Hirose T, Sugawara A, Yamamoto T, Shiomi K, Sunazuka T, Ōmura S, Hirono S. Human acidic mammalian chitinase as a novel target for anti-asthma drug design using in silico screening. Bioorg Med Chem 2013; 21:3214-20. [PMID: 23623259 DOI: 10.1016/j.bmc.2013.03.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/29/2022]
Abstract
Human acidic mammalian chitinase (hAMCase) was recently shown to be involved in the development of asthma, suggesting a possible application for hAMCase inhibitors as novel therapeutic agents for asthma. We therefore initiated drug discovery research into hAMCase using a combination of in silico methodologies and a hAMCase assay system. We first selected 23 candidate hAMCase inhibitors from a database of four million compounds using a multistep screening system combining Tripos Topomer Search technology, a docking calculation and two-dimensional molecular similarity analysis. We then measured hAMCase inhibitory activity of the selected compounds and identified seven compounds with IC50 values ≤100 μM. A model describing the binding modes of these hit compounds to hAMCase was constructed, and we discuss the structure-activity relationships of the compounds we identified, suggested by the model and the actual inhibitory activities of the compounds.
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Affiliation(s)
- Masaki Wakasugi
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Sugawara A, Tanaka T, Hirose T, Ishiyama A, Iwatsuki M, Takahashi Y, Otoguro K, Ōmura S, Sunazuka T. Borrelidin analogues with antimalarial activity: design, synthesis and biological evaluation against Plasmodium falciparum parasites. Bioorg Med Chem Lett 2013; 23:2302-5. [PMID: 23499502 DOI: 10.1016/j.bmcl.2013.02.075] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 02/12/2013] [Accepted: 02/14/2013] [Indexed: 01/07/2023]
Abstract
Borrelidin, a structurally unique 18-membered macrolide, was found to express antimalarial activity against drug-resistant Plasmodium falciparum malaria parasites, with IC50 value of 0.93 ng/mL. However, it also displays strong cytotoxicity against human diploid embryonic MRC-5 cells. To investigate the issue of the cytotoxicity of borrelidin, borrelidin-based analogues were synthesized and their anti-Plasmodium properties were evaluated. In this communication, we report that a novel borrelidin analogue, bearing the CH2SPh moiety via a triazole linkage, was found to retain a potent antimalarial activity, against drug-sensitive and drug-resistant parasite strains, but possess only weak cytotoxicity against human cells.
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Affiliation(s)
- Akihiro Sugawara
- The Kitasato Institute and Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Yachi Y, Tanaka Y, Nishibata I, Sugawara A, Kodama S, Saito K, Sone H. Low BMI at age 20 years predicts gestational diabetes independent of BMI in early pregnancy in Japan: Tanaka Women's Clinic Study. Diabet Med 2013; 30:70-3. [PMID: 22612636 DOI: 10.1111/j.1464-5491.2012.03712.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [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: 11/30/2022]
Abstract
AIMS Maternal obesity and weight gain since early adulthood are known predictors of gestational diabetes in Western countries. However, their impact has not been evaluated well in Asia, where mean BMI levels are generally lower than in Western countries. We therefore examined the associations of BMI at age 20 years and BMI change since age 20 years with the risk of gestational diabetes in Japanese pregnant women. METHODS Six hundred and twenty-four consecutive pregnant women without recognized diabetes before pregnancy, whose initial obstetric clinic visit was before 13 weeks' gestation, were prospectively observed. Weight at age 20 years was self-reported. Baseline height and weight measurements were obtained at the initial obstetric visit. Multivariate logistic regression analysis estimated the risk of incident gestational diabetes for BMI change since 20 years and BMI at age 20 years. RESULTS Twenty-eight women developed incident gestational diabetes. By multivariate logistic regression analysis that adjusted for maternal age, parity and baseline BMI, we observed a statistically significant inverse association between BMI at age 20 years and incidence of gestational diabetes (odds ratio 0.68, 95% CI 0.51-0.92). Similarly, when we assessed the association of BMI change since age 20 years, adjusted for maternal age and parity, BMI change was associated with an increased risk of gestational diabetes (odds ratio 1.26, 95% CI 1.03-1.53). When we focused on the threshold of risk of gestational diabetes, women with BMI at 20 years of less than 18 kg/m(2) had a 6.30-fold (2.26-17.59) greater risk than women with both BMI at age 20 years of 18 kg/m(2) or more and BMI change since age 20 years of less than 1.85. CONCLUSIONS Both low BMI at age 20 years and BMI change since age 20 years were significantly associated with increased risk of incident gestational diabetes.
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Affiliation(s)
- Y Yachi
- Department of Internal Medicine, University of Tsukuba Institute of Clinical Medicine, Ibaraki, Japan
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Sugawara A, Kawai K, Motohashi S, Saito K, Kodama S, Yachi Y, Hirasawa R, Shimano H, Yamazaki K, Sone H. HbA(1c) variability and the development of microalbuminuria in type 2 diabetes: Tsukuba Kawai Diabetes Registry 2. Diabetologia 2012; 55:2128-31. [PMID: 22580991 DOI: 10.1007/s00125-012-2572-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [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] [Received: 01/18/2012] [Accepted: 04/05/2012] [Indexed: 12/17/2022]
Abstract
AIMS/HYPOTHESIS The aim of this study was to examine the association between HbA(1c) variability and the development of microalbuminuria as defined by an albumin/creatinine ratio ≥ 3.4 mg/mmol (≥ 30 mg/g) in at least two of three consecutive urine samples in Japanese patients with type 2 diabetes. METHODS HbA(1c) level was measured in 812 serially registered normoalbuminuric adults aged 21-79 years with type 2 diabetes. After registration, a 1-year period to establish baseline values for mean HbA(1c) and HbA(1c) variability (measured as the intrapersonal SD of serially collected HbA(1c)) was decided upon. The association between HbA(1c) variability and the development of microalbuminuria was determined by Cox regression analysis after adjustment for other risk factors for microalbuminuria. RESULTS Microalbuminuria occurred in 193 patients during the observation period of (mean ± SD) 4.3 ± 2.7 years. Even after adjustment for mean HbA(1c), HbA(1c) variability was a significant predictor of microalbuminuria independently of the mean HbA(1c); the HR for every 1% (95% CI) increase in mean HbA(1c) was 1.22 (1.06, 1.40) (p = 0.005), and that for HbA(1c) variability was 1.35 (1.05, 1.72) (p = 0.019). The effects of these two variables were quite similar when 1 SD was used; the HR for every 1 SD increase (95% CI) in HbA(1c) was 1.23 (1.07, 1.43) (p = 0.005), and that for HbA(1c) variability was 1.20 (1.03, 1.39) (p = 0.019). CONCLUSIONS/INTERPRETATION HbA(1c) variability affects the development of microalbuminuria independently of mean HbA(1c) in type 2 diabetes. Further studies should be performed to evaluate the influence of HbA(1c) variability on other complications and in individuals of other ethnicities with type 2 diabetes.
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Affiliation(s)
- A Sugawara
- Department of Internal Medicine, Institute of Clinical Medicine, University of Tsukuba, 3-2-7 Miya-machi, Mito, Ibaraki, Japan, 310-0015
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Kuwabara T, Mori K, Mukoyama M, Kasahara M, Yokoi H, Saito Y, Ogawa Y, Imamaki H, Kawanishi T, Ishii A, Koga K, Mori KP, Kato Y, Sugawara A, Nakao K. Exacerbation of diabetic nephropathy by hyperlipidaemia is mediated by Toll-like receptor 4 in mice. Diabetologia 2012; 55:2256-66. [PMID: 22610400 DOI: 10.1007/s00125-012-2578-1] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [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] [Received: 02/03/2012] [Accepted: 04/04/2012] [Indexed: 12/24/2022]
Abstract
AIMS/HYPOTHESIS Hyperlipidaemia is an independent risk factor for the progression of diabetic nephropathy, but its molecular mechanism remains elusive. We investigated in mice how diabetes and hyperlipidaemia cause renal lesions separately and in combination, and the involvement of Toll-like receptor 4 (TLR4) in the process. METHODS Diabetes was induced in wild-type (WT) and Tlr4 knockout (KO) mice by intraperitoneal injection of streptozotocin (STZ). At 2 weeks after STZ injection, normal diet was substituted with a high-fat diet (HFD). Functional and histological analyses were carried out 6 weeks later. RESULTS Compared with treatment with STZ or HFD alone, treatment of WT mice with both STZ and HFD markedly aggravated nephropathy, as indicated by an increase in albuminuria, mesangial expansion, infiltration of macrophages and upregulation of pro-inflammatory and extracellular-matrix-associated gene expression in glomeruli. In Tlr4 KO mice, the addition of an HFD to STZ had almost no effects on the variables measured. Production of protein S100 calcium binding protein A8 (calgranulin A; S100A8), a potent ligand for TLR4, was observed in abundance in macrophages infiltrating STZ-HFD WT glomeruli and in glomeruli of diabetic nephropathy patients. High-glucose and fatty acid treatment synergistically upregulated S100a8 gene expression in macrophages from WT mice, but not from KO mice. As putative downstream targets of TLR4, phosphorylation of interferon regulatory factor 3 (IRF3) was enhanced in kidneys of WT mice co-treated with STZ and HFD. CONCLUSIONS/INTERPRETATION Activation of S100A8/TLR4 signalling was elucidated in an animal model of diabetic glomerular injury accompanied with hyperlipidaemia, which may provide novel therapeutic targets in progressive diabetic nephropathy.
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Affiliation(s)
- T Kuwabara
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, 54 Shogoin Kawaharacho, Sakyoku, Kyoto, 606-8507, Japan
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Yamaguchi T, Hamadate N, Sugawara A, Togashi H, Yamamoto T, Yoshioka M. [Liposome-encapsulated hemoglobin ameliorates brain dysfunction after transient cerebral ischemia in rats]. Nihon Shinkei Seishin Yakurigaku Zasshi 2012; 32:97-99. [PMID: 22708265] [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: 06/01/2023]
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Gouda H, Kobayashi Y, Yamada T, Ideguchi T, Sugawara A, Hirose T, Ōmura S, Sunazuka T, Hirono S. Three-Dimensional Solution Structure of Bottromycin A2: A Potent Antibiotic Active against Methicillin-Resistant Staphylococcus aureus and Vancomycin-Resistant Enterococci. Chem Pharm Bull (Tokyo) 2012; 60:169-71. [DOI: 10.1248/cpb.60.169] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Yutaka Kobayashi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Takeshi Yamada
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Tetsuya Ideguchi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Akihiro Sugawara
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Tomoyasu Hirose
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
| | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Science, Kitasato University
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Abstract
In order to obtain a large deflection angle without increasing the applied voltage to an electron biprism, we have developed a 'twin-electron biprism' (TBP), which is composed of two filament electrodes and a pair of ground plates. The observed interference-fringe spacing revealed that the deflection angle created by a TBP was about twice larger than that by a 'conventional electron biprism'. Also, we have suggested, in a double-electron biprism interferometry, the optimal disposition of a TBP for reducing the intensity of Fresnel fringes recorded in an electron hologram.
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Affiliation(s)
- M Ikeda
- Central Research Laboratory, Hitachi Ltd, Akanuma, Hatoyama, Hiki, Saitama 350-0395, Japan.
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Collier AC, Milam KA, Rougée LRA, Sugawara A, Yamauchi Y, Ward MA. Upregulation of Ugt1a genes in placentas and fetal livers in a murine model of assisted reproduction. Placenta 2011; 33:77-80. [PMID: 22115498 DOI: 10.1016/j.placenta.2011.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 10/10/2011] [Accepted: 11/01/2011] [Indexed: 11/16/2022]
Abstract
Genes from Ugt1a family in placenta and fetal liver are responsible for hormone, nutrient and chemical balance during pregnancy. Assisted reproduction technologies (ART) i.e. intracytoplasmic sperm injection (ICSI) and in vitro fertilization (IVF) alter steroid homeostasis in pregnancy through increased glucuronidation. Here we show that ART (particularly ICSI) upregulates Ugt1a1, 1a2, 1a6 and 1a9 expression in murine placentas and fetal livers with higher mRNA related to lower progesterone (1a1) and cholesterol (1a2, 1a6) in placentas. Greater steroid clearance in ART through transcriptional upregulation of Ugt1a in the placental-fetal unit may decrease the availability of essential molecules, mediating negative reproductive outcomes.
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Affiliation(s)
- A C Collier
- Dept. Tropical Medicine, Medical Microbiology and Pharmacology, University of Hawaii at Mānoa, Honolulu, HI 96813, United States.
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Herschhorn A, Finzi A, Jones DM, Courter JR, Sugawara A, Smith AB, Sodroski JG. An inducible cell-cell fusion system with integrated ability to measure the efficiency and specificity of HIV-1 entry inhibitors. PLoS One 2011; 6:e26731. [PMID: 22069466 PMCID: PMC3206054 DOI: 10.1371/journal.pone.0026731] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Accepted: 10/03/2011] [Indexed: 11/19/2022] Open
Abstract
HIV-1 envelope glycoproteins (Envs) mediate virus entry by fusing the viral and target cell membranes, a multi-step process that represents an attractive target for inhibition. Entry inhibitors with broad-range activity against diverse isolates of HIV-1 may be extremely useful as lead compounds for the development of therapies or prophylactic microbicides. To facilitate the identification of such inhibitors, we have constructed a cell-cell fusion system capable of simultaneously monitoring inhibition efficiency and specificity. In this system, effector cells stably express a tetracycline-controlled transactivator (tTA) that enables tightly inducible expression of both HIV-1 Env and the Renilla luciferase (R-Luc) reporter protein. Target cells express the HIV-1 receptors, CD4 and CCR5, and carry the firefly luciferase (F-Luc) reporter gene under the control of a tTA-responsive promoter. Thus, Env-mediated fusion of these two cell types allows the tTA to diffuse to the target cell and activate the expression of the F-Luc protein. The efficiency with which an inhibitor blocks cell-cell fusion is measured by a decrease in the F-Luc activity, while the specificity of the inhibitor is evaluated by its effect on the R-Luc activity. The system exhibited a high dynamic range and high Z'-factor values. The assay was validated with a reference panel of inhibitors that target different steps in HIV-1 entry, yielding inhibitory concentrations comparable to published virus inhibition data. Our system is suitable for large-scale screening of chemical libraries and can also be used for detailed characterization of inhibitory and cytotoxic properties of known entry inhibitors.
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Affiliation(s)
- Alon Herschhorn
- Department of Immunology Cancer and AIDS, Dana-Farber Cancer Institute and Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Andres Finzi
- Department of Immunology Cancer and AIDS, Dana-Farber Cancer Institute and Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - David M. Jones
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Joel R. Courter
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Akihiro Sugawara
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Amos B. Smith
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Joseph G. Sodroski
- Department of Immunology Cancer and AIDS, Dana-Farber Cancer Institute and Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts, United States of America
- * E-mail:
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Sugawara A, Sueki A, Hirose T, Nagai K, Gouda H, Hirono S, Shima H, Akagawa KS, Omura S, Sunazuka T. Novel 12-membered non-antibiotic macrolides from erythromycin A; EM900 series as novel leads for anti-inflammatory and/or immunomodulatory agents. Bioorg Med Chem Lett 2011; 21:3373-6. [PMID: 21524580 DOI: 10.1016/j.bmcl.2011.04.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/29/2011] [Accepted: 04/01/2011] [Indexed: 11/24/2022]
Abstract
Herein, we report the design and synthesis of the novel 12-membered non-antibiotic macrolide (8R,9S)-8,9-dihydro-6,9-epoxy-8,9-anhydropseudoerythromycin A (EM900), which was found to be a potent anti-inflammatory and/or immunomodulatory agent, capable of promoting monocyte to macrophage differentiation. This molecule shows improved acid stability, does not exhibit any anti-bacterial activity and has relatively low cytotoxicity against THP-1 cells. In addition, one of its analogues, (8R,9S)-4″,13-O-diacetyl-8,9-dihydro-6,9-epoxy-8,9-anhydropseudoerythromycin A (EM911), was found to be twice as effective as EM900.
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Affiliation(s)
- Akihiro Sugawara
- Kitasato Institute for Life Sciences, Kitasato University, and The Kitasato Institute 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Lalonde JM, Elban MA, Courter JR, Sugawara A, Soeta T, Madani N, Princiotto AM, Kwon YD, Kwong PD, Schön A, Freire E, Sodroski J, Smith AB. Design, synthesis and biological evaluation of small molecule inhibitors of CD4-gp120 binding based on virtual screening. Bioorg Med Chem 2011; 19:91-101. [PMID: 21169023 PMCID: PMC3049263 DOI: 10.1016/j.bmc.2010.11.049] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/19/2010] [Accepted: 11/22/2010] [Indexed: 11/23/2022]
Abstract
The low-molecular-weight compound JRC-II-191 inhibits infection of HIV-1 by blocking the binding of the HIV-1 envelope glycoprotein gp120 to the CD4 receptor and is therefore an important lead in the development of a potent viral entry inhibitor. Reported here is the use of two orthogonal screening methods, gold docking and ROCS shape-based similarity searching, to identify amine-building blocks that, when conjugated to the core scaffold, yield novel analogs that maintain similar affinity for gp120. Use of this computational approach to expand SAR produced analogs of equal inhibitory activity but with diverse capacity to enhance viral infection. The novel analogs provide additional lead scaffolds for the development of HIV-1 entry inhibitors that employ protein-ligand interactions in the vestibule of gp120 Phe 43 cavity.
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Affiliation(s)
- Judith M Lalonde
- Department of Chemistry, Bryn Mawr College, Bryn Mawr, PA 19010, USA.
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Otsu K, Ishinaga H, Suzuki S, Sugawara A, Sunazuka T, Omura S, Jono H, Takeuchi K. Effects of a Novel Nonantibiotic Macrolide, EM900, on Cytokine and Mucin Gene Expression in a Human Airway Epithelial Cell Line. Pharmacology 2011; 88:327-32. [DOI: 10.1159/000334339] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 10/12/2011] [Indexed: 11/19/2022]
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Gouda H, Sunazuka T, Hirose T, Iguchi K, Yamaotsu N, Sugawara A, Noguchi Y, Saito Y, Yamamoto T, Watanabe T, Shiomi K, Ōmura S, Hirono S. NMR spectroscopy and computational analysis of interaction between Serratia marcescens chitinase B and a dipeptide derived from natural-product cyclopentapeptide chitinase inhibitor argifin. Bioorg Med Chem 2010; 18:5835-44. [DOI: 10.1016/j.bmc.2010.06.093] [Citation(s) in RCA: 7] [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: 05/28/2010] [Revised: 06/25/2010] [Accepted: 06/29/2010] [Indexed: 10/19/2022]
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Sugawara A, Kudo M, Saito A, Matsuda K, Uruno A, Ito S. Novel effects of beraprost sodium on vasculatures. INT ANGIOL 2010; 29:28-32. [PMID: 20357746] [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: 05/29/2023]
Abstract
Beraprost sodium (BPS) is a stable orally active prostacyclin analogue with vasodilatory and anti-platelet effects, and has been widely used as therapeutics for pulmonary artery hypertension and chronic arterial obstruction. In order to elucidate its effects on endothelium, we first examined the short-term effects of BPS on nitric oxide (NO) production and endothelial NO synthase (eNOS) activation using bovine aortic endothelial cells. Short-term treatment of BPS induced NO production as well as eNOS phosphorylation at Ser-1179 mediated via cAMP/protein kinase A (PKA) pathway. The effects of BPS on capillary-like tube formation were next determined using human umbilical vein ECs (HUVECs)/normal human dermal fibroblasts co-culture system. BPS was observed to induce capillary-like tube formation mediated via cAMP/PKA pathway, but not via NO generation. Finally, we performed DNA microarray analyses using RNA extracted from BPS treated HUVECs. Interestingly, BPS up-regulated several genes involved in angiogenesis, anti-atherosclerosis, and endothelial function, while down-regulated several genes involved in atherosclerosis. Our data therefore indicate that BPS may be useful not only for patients with pulmonary artery hypertension and chronic arterial obstruction, but also for general atherosclerotic patients complicated with endothelial dysfunction. Further studies are needed to clarify molecular mechanisms of these BPS effects including the involvement of peroxisome proliferator-activated receptor-delta.
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Affiliation(s)
- A Sugawara
- Department of Advanced Biological Sciences for Regeneration,Tohoku University Graduate School of Medicine, Sendai, Japan.
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Sato W, Hoshi K, Kawakami J, Sato K, Sugawara A, Saito Y, Yoshida K. Assisting the diagnosis of Graves’ hyperthyroidism with Bayesian-type and SOM-type neural networks by making use of a set of three routine tests and their correlation with free T4. Biomed Pharmacother 2010; 64:7-15. [DOI: 10.1016/j.biopha.2009.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2008] [Accepted: 02/17/2009] [Indexed: 11/30/2022] Open
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Gouda H, Terashima S, Iguchi K, Sugawara A, Saito Y, Yamamoto T, Hirose T, Shiomi K, Sunazuka T, Omura S, Hirono S. Molecular modeling of human acidic mammalian chitinase in complex with the natural-product cyclopentapeptide chitinase inhibitor argifin. Bioorg Med Chem 2009; 17:6270-8. [PMID: 19666229 DOI: 10.1016/j.bmc.2009.07.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 07/21/2009] [Accepted: 07/21/2009] [Indexed: 10/20/2022]
Abstract
Human acidic mammalian chitinase (hAMCase) is an attractive target for developing anti-asthma medications. We used a variety of computational methods to investigate the interaction between hAMCase and the natural-product cyclopentapeptide chitinase inhibitor argifin. The three-dimensional structure of hAMCase was first constructed using homology modeling. The interaction mode and binding free energy between argifin and hAMCase were then examined by the molecular-docking calculation and the molecular mechanics Poisson-Boltzmann surface area method combined with molecular dynamics simulation, respectively. The results suggested that argifin binds to hAMCase in a similar fashion to the interaction mode observed in the crystal structure of argifin-human chitotriosidase complex, and possesses inhibitory activity against hAMCase in the micromolar range. We further designed argifin derivatives expected to be selective for hAMCase.
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Affiliation(s)
- Hiroaki Gouda
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
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Hirose T, Sunazuka T, Sugawara A, Noguchi Y, Tanaka T, Iguchi K, Yamamoto T, Gouda H, Shiomi K, Ōmura S. Solid-phase total synthesis of the chitinase inhibitor Argadin using a supported acetal resin. J Antibiot (Tokyo) 2009; 62:495-500. [DOI: 10.1038/ja.2009.57] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hirose T, Sunazuka T, Sugawara A, Endo A, Iguchi K, Yamamoto T, Ui H, Shiomi K, Watanabe T, Sharpless KB, Ōmura S. Chitinase inhibitors: extraction of the active framework from natural argifin and use of in situ click chemistry. J Antibiot (Tokyo) 2009; 62:277-82. [DOI: 10.1038/ja.2009.28] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mizukami H, Wada R, Yonezawa A, Sugawara A, Yagihashi S. Suppression of post-prandial hyperglycaemia by pioglitazone improved islet fibrosis and macrophage migration in the Goto-Kakizaki rat. Diabetes Obes Metab 2008; 10:791-4. [PMID: 18937646 DOI: 10.1111/j.1463-1326.2008.00893.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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