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Asano R, Nakakido M, Pérez JF, Ise T, Caaveiro JMM, Nagata S, Tsumoto K. Crystal structures of human CD40 in complex with monoclonal antibodies dacetuzumab and bleselumab. Biochem Biophys Res Commun 2024; 714:149969. [PMID: 38657446 DOI: 10.1016/j.bbrc.2024.149969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 04/26/2024]
Abstract
CD40 is a member of the tumor necrosis factor receptor superfamily, and it is widely expressed on immune and non-immune cell types. The interaction between CD40 and the CD40 ligand (CD40L) plays an essential function in signaling, and the CD40/CD40L complex works as an immune checkpoint molecule. CD40 has become a therapeutic target, and a variety of agonistic/antagonistic anti-CD40 monoclonal antibodies (mAbs) have been developed. To better understand the mode of action of anti-CD40 mAbs, we determined the X-ray crystal structures of dacetuzumab (agonist) and bleselumab (antagonist) in complex with the extracellular domain of human CD40, respectively. The structure reveals that dacetuzumab binds to CD40 on the top of cysteine-rich domain 1 (CRD1), which is the domain most distant from the cell surface, and it does not compete with CD40L binding. The binding interface of bleselumab spread between CRD2 and CRD1, overlapping with the binding surface of the ligand. Our results offer important insights for future structural and functional studies of CD40 and provide clues to understanding the mechanism of biological response. These data can be applied to developing new strategies for designing antibodies with more therapeutic efficacy.
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Affiliation(s)
- Risa Asano
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Makoto Nakakido
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan; Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Tokyo, Japan.
| | - Jorge Fernández Pérez
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Tomoko Ise
- Laboratory of Antibody Design, Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Jose M M Caaveiro
- Department of Protein Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoshi Nagata
- Laboratory of Antibody Design, Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Kouhei Tsumoto
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan; Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Tokyo, Japan; Medical Device Development and Regulation Research Center, School of Engineering, The University of Tokyo, Tokyo, Japan; The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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2
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Takase EO, Yamasaki R, Nagata S, Watanabe M, Masaki K, Yamaguchi H, Kira JI, Takeuchi H, Isobe N. Astroglial connexin 43 is a novel therapeutic target for chronic multiple sclerosis model. Sci Rep 2024; 14:10877. [PMID: 38740862 DOI: 10.1038/s41598-024-61508-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
In chronic stages of multiple sclerosis (MS) and its animal model, experimental autoimmune encephalitis (EAE), connexin (Cx)43 gap junction channel proteins are overexpressed because of astrogliosis. To elucidate the role of increased Cx43, the central nervous system (CNS)-permeable Cx blocker INI-0602 was therapeutically administered. C57BL6 mice with chronic EAE initiated by MOG35-55 received INI-0602 (40 mg/kg) or saline intraperitoneally every other day from days post-immunization (dpi) 17-50. Primary astroglia were employed to observe calcein efflux responses. In INI-0602-treated mice, EAE clinical signs improved significantly in the chronic phase, with reduced demyelination and decreased CD3+ T cells, Iba-1+ and F4/80+ microglia/macrophages, and C3+GFAP+ reactive astroglia infiltration in spinal cord lesions. Flow cytometry analysis of CD4+ T cells from CNS tissues revealed significantly reduced Th17 and Th17/Th1 cells (dpi 24) and Th1 cells (dpi 50). Multiplex array of cerebrospinal fluid showed significantly suppressed IL-6 and significantly increased IL-10 on dpi 24 in INI-0602-treated mice, and significantly suppressed IFN-γ and MCP-1 on dpi 50 in the same group. In vitro INI-0602 treatment inhibited ATP-induced calcium propagations of Cx43+/+ astroglial cells to similar levels of those of Cx43-/- cells. Astroglial Cx43 hemichannels represent a novel therapeutic target for chronic EAE and MS.
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Affiliation(s)
- Ezgi Ozdemir Takase
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ryo Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Satoshi Nagata
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Mitsuru Watanabe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Katsuhisa Masaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Hiroo Yamaguchi
- School of Physical Therapy, Faculty of Rehabilitation, Reiwa Health Sciences University, Fukuoka, Japan
| | - Jun-Ichi Kira
- Translational Neuroscience Center, Graduate School of Medicine, and School of Pharmacy at Fukuoka, International University of Health and Welfare, Ookawa, Japan
- Department of Neurology, Brain and Nerve Center, Fukuoka Central Hospital, Fukuoka, Japan
| | - Hideyuki Takeuchi
- Department of Neurology and Stroke Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
- Department of Neurology, Graduate School of Medicine, International University of Health and Welfare, Narita, Japan.
- Center for Intractable Neurological Diseases and Dementia, International University of Health and Welfare Atami Hospital, Atami, Japan.
| | - Noriko Isobe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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3
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Akiba H, Fujita J, Ise T, Nishiyama K, Miyata T, Kato T, Namba K, Ohno H, Kamada H, Nagata S, Tsumoto K. Development of a 1:1-binding biparatopic anti-TNFR2 antagonist by reducing signaling activity through epitope selection. Commun Biol 2023; 6:987. [PMID: 37758868 PMCID: PMC10533564 DOI: 10.1038/s42003-023-05326-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Conventional bivalent antibodies against cell surface receptors often initiate unwanted signal transduction by crosslinking two antigen molecules. Biparatopic antibodies (BpAbs) bind to two different epitopes on the same antigen, thus altering crosslinking ability. In this study, we develop BpAbs against tumor necrosis factor receptor 2 (TNFR2), which is an attractive immune checkpoint target. Using different pairs of antibody variable regions specific to topographically distinct TNFR2 epitopes, we successfully regulate the size of BpAb-TNFR2 immunocomplexes to result in controlled agonistic activities. Our series of results indicate that the relative positions of the two epitopes recognized by the BpAb are critical for controlling its signaling activity. One particular antagonist, Bp109-92, binds TNFR2 in a 1:1 manner without unwanted signal transduction, and its structural basis is determined using cryo-electron microscopy. This antagonist suppresses the proliferation of regulatory T cells expressing TNFR2. Therefore, the BpAb format would be useful in designing specific and distinct antibody functions.
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Affiliation(s)
- Hiroki Akiba
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan.
| | - Junso Fujita
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
- JEOL YOKOGUSHI Research Alliance Laboratories, Osaka University, Suita, Osaka, 565-0871, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Tomoko Ise
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan
| | - Kentaro Nishiyama
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tomoko Miyata
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
- JEOL YOKOGUSHI Research Alliance Laboratories, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Takayuki Kato
- Institute of Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Keiichi Namba
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
- JEOL YOKOGUSHI Research Alliance Laboratories, Osaka University, Suita, Osaka, 565-0871, Japan
- RIKEN SPring-8 Center, Suita, Osaka, 565-0871, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan
| | - Haruhiko Kamada
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan.
| | - Kouhei Tsumoto
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, 562-0011, Japan.
- School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan.
- Institute of Medical Sciences, The University of Tokyo, Minato-ku, Tokyo, 108-8639, Japan.
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Nagata S, Yamasaki R, Takase EO, Iida K, Watanabe M, Masaki K, Wijering MHC, Yamaguchi H, Kira JI, Isobe N. Iguratimod Ameliorates the Severity of Secondary Progressive Multiple Sclerosis in Model Mice by Directly Inhibiting IL-6 Production and Th17 Cell Migration via Mitigation of Glial Inflammation. Biology (Basel) 2023; 12:1217. [PMID: 37759616 PMCID: PMC10525689 DOI: 10.3390/biology12091217] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/30/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
We previously reported a novel secondary progressive multiple sclerosis (SPMS) model, progressive experimental autoimmune encephalomyelitis (pEAE), in oligodendroglia-specific Cx47-inducible conditional knockout (Cx47 icKO) mice. Based on our prior study showing the efficacy of iguratimod (IGU), an antirheumatic drug, for acute EAE treatment, we aimed to elucidate the effect of IGU on the SPMS animal model. We induced pEAE by immunizing Cx47 icKO mice with myelin oligodendrocyte glycoprotein peptide 35-55. IGU was orally administered from 17 to 50 days post-immunization. We also prepared a primary mixed glial cell culture and measured cytokine levels in the culture supernatant after stimulation with designated cytokines (IL-1α, C1q, TNF-α) and lipopolysaccharide. A migration assay was performed to evaluate the effect of IGU on the migration ability of T cells toward mixed glial cell cultures. IGU treatment ameliorated the clinical signs of pEAE, decreased the demyelinated area, and attenuated glial inflammation on immunohistochemical analysis. Additionally, IGU decreased the intrathecal IL-6 level and infiltrating Th17 cells. The migration assay revealed reduced Th17 cell migration and IL-6 levels in the culture supernatant after IGU treatment. Collectively, IGU successfully mitigated the clinical signs of pEAE by suppressing Th17 migration through inhibition of IL-6 production by proinflammatory-activated glial cells.
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Affiliation(s)
- Satoshi Nagata
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ryo Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ezgi Ozdemir Takase
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Kotaro Iida
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Mitsuru Watanabe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Katsuhisa Masaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Marion Heleen Cathérine Wijering
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells & Systems, University of Groningen, University Medical Center Groningen (UMCG), MS Center Noord Nederland, 9713 AV Groningen, The Netherlands
| | - Hiroo Yamaguchi
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- School of Physical Therapy, Faculty of Rehabilitation, Reiwa Health Sciences University, Fukuoka 811-0213, Japan
| | - Jun-ichi Kira
- Translational Neuroscience Center, Graduate School of Medicine, and School of Pharmacy at Fukuoka, International University of Health and Welfare, Fukuoka 831-8501, Japan
- Department of Neurology, Brain and Nerve Center, Fukuoka Central Hospital, Fukuoka 810-0022, Japan
| | - Noriko Isobe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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5
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Nishiyama K, Akiba H, Nagata S, Tsumoto K, Kamada H, Ohno H. A Proximity-Induced Fluorogenic Reaction Triggered by Antibody-Antigen Interactions with Adjacent Epitopes. Angew Chem Int Ed Engl 2023:e202306431. [PMID: 37259239 DOI: 10.1002/anie.202306431] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/26/2023] [Accepted: 05/30/2023] [Indexed: 06/02/2023]
Abstract
Proximity-induced chemical reactions are site-specific and rapid by taking advantage of their high affinity and highly selective interactions with the template. However, reactions induced solely by antibody-antigen interactions have not been developed. Herein, we propose a biepitopic antigen-templated chemical reaction (BATER) as a novel template reaction. In BATER, reactive functional groups are conjugated to two antibodies that interact with two epitopes of the same antigen to accelerate the reaction. We developed a method for visualizing the progress of BATER using fluorogenic click chemistry for optimal antibody selection and linker design. The reaction is accelerated in the presence of a specific antigen in a link-er length-dependent manner. The choice of the antibody epitope is important for a rapid reaction. This design will lead to various applications of BATER in living systems.
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Affiliation(s)
- Kentaro Nishiyama
- Kyoto University: Kyoto Daigaku, Graduate School of Pharmaceutical Sciences, Sakyo-ku, Yoshidashimoadathi-cho, 606-8501, Kyoto, JAPAN
| | - Hiroki Akiba
- Kyoto University: Kyoto Daigaku, Graduate School of Pharmaceutical Sciences, Sakyo-ku, Yoshidashimoadathi-cho, 606-8501, Kyoto, JAPAN
| | - Satoshi Nagata
- National Institute of Biomedical Innovation Health and Nutrition: Kokuritsu Kenkyu Kaihatsu Hojin Iyaku Kiban Kenko Eiyo Kenkyujo, Center for Drug Design Research, 567-0085, Ibaraki City, Osaka, JAPAN
| | - Kouhei Tsumoto
- National Institute of Biomedical Innovation Health and Nutrition: Kokuritsu Kenkyu Kaihatsu Hojin Iyaku Kiban Kenko Eiyo Kenkyujo, Center for Drug Design Research, 567-0085, Ibaraki City, Osaka, JAPAN
| | - Haruhiko Kamada
- National Institute of Biomedical Innovation Health and Nutrition National Institute of Health and Nutrition: Kokuritsu Kenkyu Kaihatsu Hojin Iyaku Kiban Kenko Eiyo Kenkyujo Kokuritsu Kenko Eiyo Kenkyujo, Center for Drug Design Research, 567-0085, Ibaraki City, Osaka, JAPAN
| | - Hiroaki Ohno
- Kyoto University: Kyoto Daigaku, Graduate School of Pharmaceutical Sciences, Sakyo-ku, 606-8501, Kyoto, JAPAN
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Suzuki K, Tajima M, Tokumaru Y, Oshiro Y, Nagata S, Kamada H, Kihara M, Nakano K, Honjo T, Ohta A. Anti-PD-1 antibodies recognizing the membrane-proximal region are PD-1 agonists that can down-regulate inflammatory diseases. Sci Immunol 2023; 8:eadd4947. [PMID: 36638191 DOI: 10.1126/sciimmunol.add4947] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The PD-1 receptor triggers a negative immunoregulatory mechanism that prevents overactivation of immune cells and subsequent inflammatory diseases. Because of its biological significance, PD-1 has been a drug target for modulating immune responses. Immunoenhancing anti-PD-1 blocking antibodies have become a widely used cancer treatment; however, little is known about the required characteristics for anti-PD-1 antibodies to be capable of stimulating immunosuppressive activity. Here, we show that PD-1 agonists exist in the group of anti-PD-1 antibodies recognizing the membrane-proximal extracellular region in sharp contrast to the binding of the membrane-distal region by blocking antibodies. This trend was consistent in an analysis of 81 anti-human PD-1 monoclonal antibodies. Because PD-1 agonist antibodies trigger immunosuppressive signaling by cross-linking PD-1 molecules, Fc engineering to enhance FcγRIIB binding of PD-1 agonist antibodies notably improved human T cell inhibition. A PD-1 agonist antibody suppressed inflammation in murine disease models, indicating its clinical potential for treatment of various inflammatory disorders, including autoimmune diseases.
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Affiliation(s)
- Kensuke Suzuki
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan.,Pharmaceutical R&D Division, Meiji Seika Pharma Co. Ltd., Tokyo 104-8002, Japan
| | - Masaki Tajima
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan.,Division of Integrated High-Order Regulatory Systems, Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Yosuke Tokumaru
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan.,Pharmaceutical R&D Division, Meiji Seika Pharma Co. Ltd., Tokyo 104-8002, Japan
| | - Yuya Oshiro
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan.,Pharmaceutical R&D Division, Meiji Seika Pharma Co. Ltd., Tokyo 104-8002, Japan
| | - Satoshi Nagata
- Laboratory of Antibody Design, Center for Drug Design Research, National Institutes of Biomedical Innovation, Health, and Nutrition, Ibaraki 567-0085, Japan
| | - Haruhiko Kamada
- Laboratory of Antibody Design, Center for Drug Design Research, National Institutes of Biomedical Innovation, Health, and Nutrition, Ibaraki 567-0085, Japan
| | - Miho Kihara
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Kohei Nakano
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Tasuku Honjo
- Department of Immunology and Genomic Medicine, Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Akio Ohta
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan
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Ishiguro K, Sato T, Shichiji M, Kihara Y, Murakami T, Nagata S, Ishigaki K. VP.73 Characteristics of cardiac dysfunction in patients with Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.335] [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: 11/06/2022]
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8
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Takeuchi H, Masaki K, Ogata H, Nagata S, Shimogawa T, Yamasaki R, Isobe N. Teaching NeuroImages: Reversible Parkinsonism Caused by Lumboperitoneal Shunt Overdrainage. Neurology 2022; 99:486-488. [PMID: 35803719 DOI: 10.1212/wnl.0000000000200994] [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] [Received: 02/24/2022] [Accepted: 06/08/2022] [Indexed: 11/15/2022] Open
Affiliation(s)
- Hajime Takeuchi
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Katsuhisa Masaki
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Hidenori Ogata
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Satoshi Nagata
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Takafumi Shimogawa
- Department of Neurosurgery, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Ryo Yamasaki
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
| | - Noriko Isobe
- Departments of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University
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9
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Yamaguchi T, Hoshizaki M, Minato T, Nirasawa S, Asaka MN, Niiyama M, Imai M, Uda A, Chan JFW, Takahashi S, An J, Saku A, Nukiwa R, Utsumi D, Kiso M, Yasuhara A, Poon VKM, Chan CCS, Fujino Y, Motoyama S, Nagata S, Penninger JM, Kamada H, Yuen KY, Kamitani W, Maeda K, Kawaoka Y, Yasutomi Y, Imai Y, Kuba K. ACE2-like carboxypeptidase B38-CAP protects from SARS-CoV-2-induced lung injury. Nat Commun 2021; 12:6791. [PMID: 34815389 PMCID: PMC8610983 DOI: 10.1038/s41467-021-27097-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [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: 09/12/2020] [Accepted: 11/04/2021] [Indexed: 01/08/2023] Open
Abstract
Angiotensin-converting enzyme 2 (ACE2) is a receptor for cell entry of SARS-CoV-2, and recombinant soluble ACE2 protein inhibits SARS-CoV-2 infection as a decoy. ACE2 is a carboxypeptidase that degrades angiotensin II, thereby improving the pathologies of cardiovascular disease or acute lung injury. Here we show that B38-CAP, an ACE2-like enzyme, is protective against SARS-CoV-2-induced lung injury. Endogenous ACE2 expression is downregulated in the lungs of SARS-CoV-2-infected hamsters, leading to elevation of angiotensin II levels. Recombinant Spike also downregulates ACE2 expression and worsens the symptoms of acid-induced lung injury. B38-CAP does not neutralize cell entry of SARS-CoV-2. However, B38-CAP treatment improves the pathologies of Spike-augmented acid-induced lung injury. In SARS-CoV-2-infected hamsters or human ACE2 transgenic mice, B38-CAP significantly improves lung edema and pathologies of lung injury. These results provide the first in vivo evidence that increasing ACE2-like enzymatic activity is a potential therapeutic strategy to alleviate lung pathologies in COVID-19 patients. Endogenous ACE2 is a receptor for SARS-CoV-2 and a recombinant soluble ACE2 protein can inhibit SARS-CoV-2 infection acting as a decoy. Here the authors show that B38-CAP, an ACE2-like enzyme but not a decoy for the virus, is protective against SARS-CoV-2-induced lung injury in animal models.
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Affiliation(s)
- Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Midori Hoshizaki
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.,Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Takafumi Minato
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Satoru Nirasawa
- Biological Resources and Post-Harvest Division, Japan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki, 305-8686, Japan
| | - Masamitsu N Asaka
- Tsukuba Primate Research Center, NIBIOHN, Hachimandai 1-1, Tsukuba-shi, Ibaraki, 305-0843, Japan
| | - Mayumi Niiyama
- Laboratory of Biopharmaceutical Research, NIBIOHN, 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Masaki Imai
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, 108-8639, Tokyo, Japan
| | - Akihiko Uda
- Department of Veterinary Science, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjyuku-ku, Tokyo, 162-8640, Japan
| | - Jasper Fuk-Woo Chan
- State Key Laboratory of Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Saori Takahashi
- Akita Research Institute of Food and Brewing, 4-26 Sanuki, Arayamachi, Akita, 010-1623, Japan
| | - Jianbo An
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Akari Saku
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Ryota Nukiwa
- Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan.,Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Osaka, 565-0871, Japan
| | - Daichi Utsumi
- Tsukuba Primate Research Center, NIBIOHN, Hachimandai 1-1, Tsukuba-shi, Ibaraki, 305-0843, Japan
| | - Maki Kiso
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, 108-8639, Tokyo, Japan
| | - Atsuhiro Yasuhara
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, 108-8639, Tokyo, Japan
| | - Vincent Kwok-Man Poon
- State Key Laboratory of Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Chris Chung-Sing Chan
- State Key Laboratory of Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Yuji Fujino
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Osaka, 565-0871, Japan
| | - Satoru Motoyama
- Department of Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Satoshi Nagata
- Laboratory of Antibody Design, NIBIOHN, 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Josef M Penninger
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC, V6T 1Z3, Canada.,IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, 1030, Vienna, Austria
| | - Haruhiko Kamada
- Laboratory of Biopharmaceutical Research, NIBIOHN, 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Kwok-Yung Yuen
- State Key Laboratory of Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Wataru Kamitani
- Department of Infectious Diseases and Host Defense, Graduate School of Medicine, Gunma University, Maebashi, Gunma, 371-8511, Japan
| | - Ken Maeda
- Department of Veterinary Science, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjyuku-ku, Tokyo, 162-8640, Japan
| | - Yoshihiro Kawaoka
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, 108-8639, Tokyo, Japan
| | - Yasuhiro Yasutomi
- Tsukuba Primate Research Center, NIBIOHN, Hachimandai 1-1, Tsukuba-shi, Ibaraki, 305-0843, Japan
| | - Yumiko Imai
- Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition (NIBIOHN), 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
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Asaka MN, Utsumi D, Kamada H, Nagata S, Nakachi Y, Yamaguchi T, Kawaoka Y, Kuba K, Yasutomi Y. Highly susceptible SARS-CoV-2 model in CAG promoter-driven hACE2-transgenic mice. JCI Insight 2021; 6:e152529. [PMID: 34463644 PMCID: PMC8525594 DOI: 10.1172/jci.insight.152529] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
COVID-19, caused by SARS-CoV-2, has spread worldwide with dire consequences. To urgently investigate the pathogenicity of COVID-19 and develop vaccines and therapeutics, animal models that are highly susceptible to SARS-CoV-2 infection are needed. In the present study, we established an animal model highly susceptible to SARS-CoV-2 via the intratracheal tract infection in CAG promoter-driven human angiotensin-converting enzyme 2-transgenic (CAG-hACE2) mice. The CAG-hACE2 mice showed several severe symptoms of SARS-CoV-2 infection, with definitive weight loss and subsequent death. Acute lung injury with elevated cytokine and chemokine levels was observed at an early stage of infection in CAG-hACE2 mice infected with SARS-CoV-2. Analysis of the hACE2 gene in CAG-hACE2 mice revealed that more than 15 copies of hACE2 genes were integrated in tandem into the mouse genome, supporting the high susceptibility to SARS-CoV-2. In the developed model, immunization with viral antigen or injection of plasma from immunized mice prevented body weight loss and lethality due to infection with SARS-CoV-2. These results indicate that a highly susceptible model of SARS-CoV-2 infection in CAG-hACE2 mice via the intratracheal tract is suitable for evaluating vaccines and therapeutic medicines.
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Affiliation(s)
- Masamitsu N. Asaka
- Laboratory of Immunoregulation and Vaccine Research, Tsukuba Primate Research Center
| | - Daichi Utsumi
- Laboratory of Immunoregulation and Vaccine Research, Tsukuba Primate Research Center
| | - Haruhiko Kamada
- Laboratory of Biopharmaceutical Research, and
- Laboratory of Antibody Design, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Suita, Japan
| | - Satoshi Nagata
- Laboratory of Antibody Design, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Japan
| | - Yutaka Nakachi
- Department of Molecular Brain Science, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic Science, Graduate School of Medicine, Akita University, Akita, Japan
| | - Yoshihiro Kawaoka
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, USA
- Institute of Medical Science, University of Tokyo, Tokyo, Japan
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic Science, Graduate School of Medicine, Akita University, Akita, Japan
| | - Yasuhiro Yasutomi
- Laboratory of Immunoregulation and Vaccine Research, Tsukuba Primate Research Center
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11
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Tozaki T, Ohnuma A, Kikuchi M, Ishige T, Kakoi H, Hirota K, Kusano K, Nagata S. Simulated validation of intron-less transgene detection using DELLY for gene-doping control in horse sports. Anim Genet 2021; 52:759-761. [PMID: 34339052 DOI: 10.1111/age.13127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2021] [Indexed: 12/31/2022]
Abstract
Gene doping is prohibited in horseracing. In a previous study, we developed a method for non-targeted transgene detection using DELLY, which is based on split-read (SR) and paired-end (PE) algorithms to detect structural variants, on WGS data. In this study, we validated the detection sensitivity of DELLY using artificially generated sequence data of 12 target genes. With DELLY, at least one intron was detected as a deletion in eight targeted genes using the 150 bp PE read WGS data, whereas all targeted genes were detected by DELLY using the 100 bp PE read data. The detection sensitivity was higher in 100 bp PE reads than in 150 bp PE reads, despite a lower total sequence coverage, probably because of mismatch tolerance between the mapped reads and reference genome. In addition, it was observed that the average intron size detected by SR alone was 293 bp and that that detected by both SR and PE was 8924 bp. Thus, we showed that transgenes with various intron-exon structures could be detected using DELLY, suggesting its application in gene-doping control in horses.
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Affiliation(s)
- T Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - A Ohnuma
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - M Kikuchi
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - T Ishige
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - H Kakoi
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - K Hirota
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - K Kusano
- Equine Department, Japan Racing Association, 6-11-1 Roppongi, Minato, Tokyo, 106-8401, Japan
| | - S Nagata
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
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Une H, Yamasaki R, Nagata S, Yamaguchi H, Nakamuta Y, Indiasari UC, Cui Y, Shinoda K, Masaki K, Götz M, Kira JI. Brain gray matter astroglia-specific connexin 43 ablation attenuates spinal cord inflammatory demyelination. J Neuroinflammation 2021; 18:126. [PMID: 34090477 PMCID: PMC8180177 DOI: 10.1186/s12974-021-02176-1] [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: 01/13/2021] [Accepted: 05/19/2021] [Indexed: 11/10/2022] Open
Abstract
Background Brain astroglia are activated preceding the onset of experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). We characterized the effects of brain astroglia on spinal cord inflammation, focusing on astroglial connexin (Cx)43, because we recently reported that Cx43 has a critical role in regulating neuroinflammation. Methods Because glutamate aspartate transporter (GLAST)+ astroglia are enriched in the brain gray matter, we generated Cx43fl/fl;GLAST-CreERT2/+ mice that were brain gray matter astroglia-specific Cx43 conditional knockouts (Cx43 icKO). EAE was induced by immunization with myelin oligodendroglia glycoprotein (MOG) 35–55 peptide 10 days after tamoxifen injection. Cx43fl/fl mice were used as controls. Results Acute and chronic EAE signs were significantly milder in Cx43 icKO mice than in controls whereas splenocyte MOG-specific responses were unaltered. Histologically, Cx43 icKO mice showed significantly less demyelination and fewer CD45+ infiltrating immunocytes, including F4/80+ macrophages, and Iba1+ microglia in the spinal cord than controls. Microarray analysis of the whole cerebellum revealed marked upregulation of anti-inflammatory A2-specific astroglia gene sets in the pre-immunized phase and decreased proinflammatory A1-specific and pan-reactive astroglial gene expression in the onset phase in Cx43 icKO mice compared with controls. Astroglia expressing C3, a representative A1 marker, were significantly decreased in the cerebrum, cerebellum, and spinal cord of Cx43 icKO mice compared with controls in the peak phase. Isolated Cx43 icKO spinal microglia showed more anti-inflammatory and less proinflammatory gene expression than control microglia in the pre-immunized phase. In particular, microglial expression of Ccl2, Ccl5, Ccl7, and Ccl8 in the pre-immunized phase and of Cxcl9 at the peak phase was lower in Cx43 icKO than in controls. Spinal microglia circularity was significantly lower in Cx43 icKO than in controls in the peak phase. Significantly lower interleukin (IL)-6, interferon-γ, and IL-10 levels were present in cerebrospinal fluid from Cx43 icKO mice in the onset phase compared with controls. Conclusions The ablation of Cx43 in brain gray matter astroglia attenuates EAE by promoting astroglia toward an anti-inflammatory phenotype and suppressing proinflammatory activation of spinal microglia partly through depressed cerebrospinal fluid proinflammatory cytokine/chemokine levels. Brain astroglial Cx43 might be a novel therapeutic target for MS. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02176-1.
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Affiliation(s)
- Hayato Une
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ryo Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Satoshi Nagata
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Hiroo Yamaguchi
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yuko Nakamuta
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ulfa Camelia Indiasari
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yiwen Cui
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Koji Shinoda
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Katsuhisa Masaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Magdalena Götz
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians University Munich, Munich, Germany
| | - Jun-Ichi Kira
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan. .,Translational Neuroscience Center, Graduate School of Medicine, and School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Ookawa, Fukuoka, 831-8501, Japan. .,Department of Neurology, Brain and Nerve Center, Fukuoka Central Hospital, International University of Health and Welfare, 2-6-11 Yakuin, Chuo-ku, Fukuoka, 810-0022, Japan.
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13
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Honda C, Yamana H, Matsui H, Nagata S, Yasunaga H, Naruse T. Age in months and birth order in infant nonfatal injuries: A retrospective cohort study. Public Health in Practice 2020; 1:100005. [PMID: 36101695 PMCID: PMC9461530 DOI: 10.1016/j.puhip.2020.100005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 04/02/2020] [Indexed: 11/17/2022] Open
Abstract
Objective To examine the age in months at which infants visited outpatient clinics or emergency rooms for the first time for nonfatal injuries and to identify risk factors for the occurrence of these injuries. Study design Retrospective cohort study. Methods We used a health insurance claims database in Japan. Infants born between April 2012 and December 2014 were identified and followed until 12 months of age. We identified their first visit to outpatient clinics or emergency rooms because of nonfatal injuries (wounds/fractures, foreign bodies, and burns). Cox regression analysis was used to examine the association of nonfatal injuries with infants’ sex, birth order, and parental age. Results We identified 46,431 eligible infants. Of these, 7606 (16.4%) were brought to an outpatient clinic or emergency room for nonfatal injuries within 12 months of birth. Of the 7,606, 21.7% were aged ≤4 months and 44.7% ≤ 7 months. First-born infants were more likely to have wounds/fractures and burns. Conclusion One-fifth of first nonfatal infant injuries occurred within 4 months of age. Healthcare providers should provide early education about injury prevention, especially to caregivers of first-born infants. Nonfatal injuries within first year of birth occurred in 16% of infants. 22% of first injuries occurred within 4 months of birth. First-born infants were more likely to have wounds/fractures and burns.
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Affiliation(s)
- C. Honda
- Department of Community Health Nursing, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Corresponding author. Department of Community Health Nursing, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - H. Yamana
- Department of Health Services Research, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - H. Matsui
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - S. Nagata
- Faculty of Nursing and Medical Care, Graduate School of Health Management, Keio University, Kanagawa, Japan
| | - H. Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - T. Naruse
- Department of Community Health Nursing, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Murakami T, Sato T, Adachi M, Shichiji M, Ishiguro K, Kihara Y, Nagata S, Ishigaki K. CONGENITAL MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.197] [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: 10/23/2022]
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15
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Sato T, Kihara Y, Ishiguro K, Shichiji M, Murakami T, Nagata S, Ishigaki K. CONGENITAL MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.201] [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: 11/30/2022]
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16
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Nagata S, Tsutsumi T, Hasegawa A, Yoshida F, Ueno Y, Watanabe MF. Enzyme Immunoassay for Direct Determination of Microcystins in Environmental Water. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.2.408] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
An enzyme-linked immunosorbent assay (ELISA) was developed for direct quantitation of microcys- tins (MCs), a group of freshwater cyanobacterial toxins. An anti-MC monoclonal antibody exhibiting broad cross-reactivity to major MC derivatives was used. The detection limit and linear range of the ELISA standard curve with microcystin-(leucine-ar-ginine) (MCLR), a variant of MCs, were 20 and 20–500 pg/mL, respectively. For analysis of MC released from cyanobacterial cells, water sample filtered through a glass fiber filter was applied directly to ELISA. For analysis of total MC (released MC plus intracellular MC), intracellular toxin was extracted by freeze-thawing twice before filtration. Mean recovery of MCLR added to tap water and toxin-free environmental water was 101%, with a coefficient of variation (CV) of 7.3% at toxin levels of 20–500 pg/mL. Mean recovery of MCLR added to toxin-free cyanobacterial extracts was 93%, with a CV of 12.5% at toxin levels of 50–500 pg/mL. At 20 pg/mL, an increasing matrix effect on assay variance was observed; therefore, both released MC and total MC were measured in the range 50–500 pg/ mL. Comparative studies with a liquid chromatographic (LC) method showed that the ELISA gives a reliable correlation with LC for analysis of MC in water extracts of natural blooms and cultured cyanobacterial cells (r = 0.98). The ELISA was applied to water samples collected from lakes and ponds in Japan. In 4 of 13 and 12 of 17 samples, 81–800 pg released MC/mL and 64–94 000 pg total MC/mL were detected, respectively. By LC separation followed by the ELISA analysis, the presence of MCLR, microcystin-arginine-arginine, and micro-cystin-tyrosine-arginine were confirmed in 4 ELISA-positive samples selected randomly. The newly developed ELISA is a reliable and powerful method for mass monitoring of MC levels in environmental water.
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Affiliation(s)
- Satoshi Nagata
- Science University of Tokyo, Faculty of Pharmaceutical Sciences, Department of Toxicology and Microbial Chemistry, 12 Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan
| | - Tomoaki Tsutsumi
- Science University of Tokyo, Faculty of Pharmaceutical Sciences, Department of Toxicology and Microbial Chemistry, 12 Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan
| | - Akihiro Hasegawa
- Science University of Tokyo, Faculty of Pharmaceutical Sciences, Department of Toxicology and Microbial Chemistry, 12 Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan
| | - Fuyuko Yoshida
- Science University of Tokyo, Faculty of Pharmaceutical Sciences, Department of Toxicology and Microbial Chemistry, 12 Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan
| | - Yoshio Ueno
- Science University of Tokyo, Faculty of Pharmaceutical Sciences, Department of Toxicology and Microbial Chemistry, 12 Ichigaya Funagawara-machi, Shinjuku-ku, Tokyo 162, Japan
| | - Mariyo F Watanabe
- Tokyo Metropolitan Research Laboratory of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo 160, Japan
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Tozaki T, Kusano K, Ishikawa Y, Kushiro A, Nomura M, Kikuchi M, Kakoi H, Hirota K, Miyake T, Hill EW, Nagata S. A candidate-SNP retrospective cohort study for fracture risk in Japanese Thoroughbred racehorses. Anim Genet 2019; 51:43-50. [PMID: 31612520 DOI: 10.1111/age.12866] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2019] [Indexed: 11/30/2022]
Abstract
Fractures are medical conditions that compromise the athletic potential of horses and/or the safety of jockeys. Therefore, the reduction of fracture risk is an important horse and human welfare issue. The present study used molecular genetic approaches to determine the effect of genetic risk for fracture at four candidate SNPs spanning the myostatin (MSTN) gene on horse chromosome 18. Among the 3706 Japanese Thoroughbred racehorses, 1089 (29.4%) had experienced fractures in their athletic life, indicating the common occurrence of this injury in Thoroughbreds. In the case/control association study, fractures of the carpus (carpal bones and distal radius) were statistically associated with g.65809482T/C (P = 1.17 x 10-8 ), g.65868604G/T (P = 2.66 x 10-9 ), and g.66493737C/T (P = 6.41 x 10-8 ). In the retrospective cohort study using 1710 racehorses born in 2000, the relative risk (RR) was highest for male horses at g.65868604G/T, based on the dominant allele risk model (RR = 2.251, 95% confidence interval 1.407-3.604, P = 0.00041), and for female horses at g.65868604G/T, based on the recessive allele risk model (RR = 2.313, 95% confidence interval 1.380-3.877, P = 0.00163). Considering the association of these SNPs with racing performance traits such as speed, these genotypes may affect the occurrence of carpus fractures in Japanese Thoroughbred racehorses as a consequence of the non-genetic influence of the genotype on the distance and/or intensity of racing and training. The genetic information presented here may contribute to the development of strategic training programs and racing plans for racehorses that improve their health and welfare.
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Affiliation(s)
- T Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - K Kusano
- Equine Department, Japan Racing Association, Minato, Tokyo, 106-8401, Japan
| | - Y Ishikawa
- Racehorse Hospital Ritto Training Center, Japan Racing Association, Ritto, Shiga, 520-3005, Japan
| | - A Kushiro
- Racehorse Hospital Miho Training Center, Japan Racing Association, Miho, Ibaraki, 300-0493, Japan
| | - M Nomura
- Racehorse Hospital Ritto Training Center, Japan Racing Association, Ritto, Shiga, 520-3005, Japan
| | - M Kikuchi
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - H Kakoi
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - K Hirota
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
| | - T Miyake
- Comparative Agricultural Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - E W Hill
- School of Agriculture and Food Science, University College Dublin, Dublin, 4, Ireland.,Plusvital Ltd, The Highline, Dun Laoghaire Industrial Estate, Pottery Road, Dun Laoghaire, Co Dublin, Ireland
| | - S Nagata
- Genetic Analysis Department, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi, 320-0851, Japan
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Sato T, Taniguchi N, Ishiguro K, Shichiji M, Murakami T, Awano H, Shirakawa T, Matsuo M, Nagata S, Ishigaki K. P.347Urinary titin fragment in Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.461] [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: 10/25/2022]
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Ishigaki K, Ihara C, Nakamura H, Mori-Yoshimura M, Maruo K, Murakami T, Sato T, Shichiji M, Ishiguro K, Nagata S, Kaiya H, Osawa M. FUKUYAMA CONGENITAL MUSCULAR DYSTROPHY. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.457] [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: 10/25/2022]
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Ishiguro K, Nakayama T, Yoshioka M, Murakami T, Kajino S, Shichiji M, Sato T, Fukuyo N, Kuru S, Osawa M, Nagata S, Okubo M, Murakami N, Hayashi Y, Nishino I, Ishigaki K. EP.31Characteristic findings of skeletal muscle MRI in caveolinopathies. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.263] [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: 10/25/2022]
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Akiba H, Satoh R, Nagata S, Tsumoto K. Effect of allotypic variation of human IgG1 on the thermal stability of disulfide-linked knobs-into-holes mutants of the Fc for stable bispecific antibody design. Antib Ther 2019; 2:65-69. [PMID: 33928224 PMCID: PMC7990158 DOI: 10.1093/abt/tbz008] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 05/29/2019] [Accepted: 07/02/2019] [Indexed: 11/22/2022] Open
Abstract
Background Disulfide-linked knobs-into-holes (dKiH) mutation is a well-validated antibody engineering technique to force heterodimer formation of different Fcs for efficient production of bispecific antibodies. An artificial disulfide bond is created between mutated cysteine residues in CH3 domain of human IgG1 Fc whose positions are 354 of the “knob” and 349 of the “hole” heavy chains. The disulfide bond is located adjacent to the exposed loop with allotypic variations at positions 356 and 358. Effects of the variation on the biophysical property of the Fc protein with dKiH mutations have not been reported. Methods We produced dKiH Fc proteins of high purity by affinity-tag fusion to the hole chain and IdeS treatment, which enabled removal of mispaired side products. Thermal stability was analyzed in a differential scanning calorimetry instrument. Results We firstly analyzed the effect of the difference in allotypes of the Fcs on the thermal stability of the heterodimeric Fc. We observed different melting profiles of the two allotypes (G1m1 and nG1m1) showing slightly higher melting temperature of G1m1 than nG1m1. Additionally, we showed different characteristics among heterodimers with different combinations of the allotypes in knob and hole chains. Conclusion Allotypic variations affected melting profiles of dKiH Fc proteins possibly with larger contribution of variations adjacent to the disulfide linkage.
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Affiliation(s)
- Hiroki Akiba
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085, Japan
| | - Reiko Satoh
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085, Japan
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085, Japan
| | - Kouhei Tsumoto
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085, Japan.,Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan.,Medical Proteomics Laboratory, The Institute of Medical Sciences, The University of Tokyo, Tokyo, 108-8639, Japan
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Tozaki T, Kikuchi M, Kakoi H, Hirota K, Nagata S, Yamashita D, Ohnuma T, Takasu M, Kobayashi I, Hobo S, Manglai D, Petersen JL. Genetic diversity and relationships among native Japanese horse breeds, the Japanese Thoroughbred and horses outside of Japan using genome-wide SNP data. Anim Genet 2019; 50:449-459. [PMID: 31282588 DOI: 10.1111/age.12819] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2019] [Indexed: 11/29/2022]
Abstract
Eight horse breeds-Hokkaido, Kiso, Misaki, Noma, Taishu, Tokara, Miyako and Yonaguni-are native to Japan. Although Japanese native breeds are believed to have originated from ancient Mongolian horses imported from the Korean Peninsula, the phylogenetic relationships among these breeds are not well elucidated. In the present study, we compared genetic diversity among 32 international horse breeds previously evaluated by the Equine Genetic Diversity Consortium, the eight Japanese native breeds and Japanese Thoroughbreds using genome-wide SNP genotype data. The proportion of polymorphic loci and expected heterozygosity showed that the native Japanese breeds, with the exception of the Hokkaido, have relatively low diversity compared to the other breeds sampled. Phylogenetic and cluster analyses demonstrated relationships among the breeds that largely reflect their geographic distribution in Japan. Based on these data, we suggest that Japanese horses originated from Mongolian horses migrating through the Korean Peninsula. The Japanese Thoroughbreds were distinct from the native breeds, and although they maintain similar overall diversity as Thoroughbreds from outside Japan, they also show evidence of uniqueness relative to the other Thoroughbred samples. This is the first study to place the eight native Japanese breeds and Japanese Thoroughbred in context with an international sample of diverse breeds.
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Affiliation(s)
- T Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan.,Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan.,College of Animal Science, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - M Kikuchi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - H Kakoi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - K Hirota
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - S Nagata
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - D Yamashita
- Japan Equine Affairs Association, Chuo-ku, Tokyo, 104-0033, Japan
| | - T Ohnuma
- Japan Equine Affairs Association, Chuo-ku, Tokyo, 104-0033, Japan
| | - M Takasu
- Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan
| | - I Kobayashi
- Sumiyoshi Livestock Science Station, Field Science Center, University of Miyazaki, Miyazaki, 880-0121, Japan
| | - S Hobo
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, 890-0065, Japan
| | - D Manglai
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - J L Petersen
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE, 68583-0908, USA
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Ambegaonkar AA, Nagata S, Pierce SK, Sohn H. The Differentiation in vitro of Human Tonsil B Cells With the Phenotypic and Functional Characteristics of T-bet+ Atypical Memory B Cells in Malaria. Front Immunol 2019; 10:852. [PMID: 31068937 PMCID: PMC6491666 DOI: 10.3389/fimmu.2019.00852] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 04/02/2019] [Indexed: 01/14/2023] Open
Abstract
Malaria is a deadly infectious disease associated with fundamental changes in the composition of the memory B cell (MBC) compartment, most notably a large expansion of T-bet+ MBCs, termed atypical MBCs. However, we know little about the precursors of atypical MBCs and the conditions that drive their differentiation. We compared the responses of human tonsil naïve B cells, MBCs, and germinal center B cells to a variety of stimulatory conditions. We determined that prolonged antigen presentation in the presence of CpG and IFN-γ induced maximal expression of T-bet and other phenotypic markers of malaria-associated atypical MBCs primarily in naïve B cells in vitro. Importantly T-bet+ naïve-derived B cells resembled atypical MBCs in their hypo-responsiveness to signaling through their B cell receptors. Thus, naïve B cells can be induced to differentiate into phenotypically and functionally atypical-like MBCs in vitro under conditions that may prevail in chronic infectious diseases in vivo.
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Affiliation(s)
- Abhijit A Ambegaonkar
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Susan K Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Haewon Sohn
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
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Kusano K, Minamijima Y, Mashita S, Kunii H, Yamashita S, Nagata S. Concentrations of indomethacin and its metabolite desmethylindomethacin in plasma and urine after repeated indomethacin topical application to Thoroughbreds. Equine Vet J 2018; 51:506-509. [PMID: 30472732 DOI: 10.1111/evj.13049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 11/14/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Repeated topical application of indomethacin is common in Japanese racehorses, despite the lack of pharmacokinetic data. OBJECTIVES To determine the concentrations of indomethacin and its metabolite, desmethylindomethacin, in plasma and urine of Thoroughbreds topically treated repeatedly with indomethacin. STUDY DESIGN In vivo experimental. METHODS Seven female Thoroughbreds were topically treated with 50 g of 1% indomethacin cream per horse to the back and hips (500 mg of indomethacin/head/2400 cm2 , 0.21 g/cm2 ) for 3 consecutive days. Samples were pretreated by protein precipitation for plasma and liquid-liquid extraction with ethyl acetate after hydrolysis with hydrochloric acid for urine. The concentrations of indomethacin and desmethylindomethacin in plasma and urine were measured by liquid chromatography-mass spectrometry. RESULTS Indomethacin was quantifiable in plasma up to 48-72 h and in urine up to 96 h after the final application. Desmethylindomethacin was quantifiable in plasma up to 48 h and in urine up to 72-96 h after the final application. MAIN LIMITATIONS The relationship between the local and systemic indomethacin concentrations after the topical application was not clarified. CONCLUSIONS Pharmacokinetic data were acquired for repeated topical administration of 1% indomethacin cream to Thoroughbreds. Hydrolysing urine samples with hydrochloric acid was effective for the analysis of indomethacin and its metabolite, and indomethacin may be an excellent marker analyte for doping tests. The estimated withdrawal time based on the limit of detection was 342 h.
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Affiliation(s)
- K Kusano
- Miho Training Center, Racehorse Hospital, Japan Racing Association, Miho, Inashiki, Ibaraki, Japan
| | - Y Minamijima
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
| | - S Mashita
- Equine Department, Japan Racing Association, Minato, Tokyo, Japan
| | - H Kunii
- Equine Hospital, Horseracing School, Japan Racing Association, Shiroi City, Chiba, Japan
| | - S Yamashita
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
| | - S Nagata
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
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Nagata S, Nishimura Y, Mitsuo K. [A case of anti-myelin oligodendrocyte glycoprotein (MOG) and anti-N-methyl-D-aspartate (NMDA) receptor antibody-positive encephalitis with optic neuritis]. Rinsho Shinkeigaku 2018; 58:636-641. [PMID: 30270341 DOI: 10.5692/clinicalneurol.cn-001194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A 20-year-old female was hospitalized due to generalized seizure two weeks after an infection. She reported disorientation, neck stiffness and weakness in her legs. MRI FLAIR images and T2WI on her first visit to our hospital showed hyperintense lesions in the bilateral cingulate gyrus and the medial region of the superior frontal gyrus. Gadolinium (Gd)-enhanced T1WI showed enhancement in the upper part of the corpus callosum. Examination of her cerebrospinal fluid (CSF) revealed mildly elevated leucocytes. After the administration of high-dose intravenous methylprednisolone, her symptoms partially improved. However, MRI T2WI at 16 days after admission showed a lesion with a peripheral hypointense rim in the left side of the cingulate gyrus, which had ring enhancement on contrast CT. FLAIR images at 28 days after admission showed the hyperintense lesion spreading in the subcallosal area and the brainstem, and coronal short inversion time inversion recovery (STIR) images demonstrated bilateral optic neuritis. She was treated with steroid pulse therapy and plasma exchange. Thereafter her symptoms improved. The patient's CSF at 27 days after admission tested positive for anti-myelin oligodendrocyte glycoprotein (anti-MOG) antibodies and anti-N-methyl-D-aspartate (anti-NMDA) receptor antibodies. Encephalitis with optic neuritis in a patient with both anti-MOG and anti-NMDA receptor antibodies is very rare. Coexistence of multiple antibodies in the same patient may contribute to the diversity of autoimmune diseases associated with anti-MOG antibodies or anti-NMDA receptor antibodies.
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Affiliation(s)
- Satoshi Nagata
- Department of Neurology, National Hospital Organization Beppu Medical Center
| | - Yuji Nishimura
- Department of Neurology, National Hospital Organization Beppu Medical Center
| | - Kunihiko Mitsuo
- Department of Neurology, National Hospital Organization Beppu Medical Center
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26
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Shichiji M, Ishigaki K, Sato T, Yamashita A, Nagata S. CONGENITAL MUSCULAR DYSTROPHIES. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.371] [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: 11/16/2022]
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Shancer Z, Williams M, Igelman A, Nagata S, Ise T, Pastan I, Bera TK. Preclinical development of anti-BCMA immunotoxins targeting multiple myeloma. Antib Ther 2018; 1:19-25. [PMID: 30272049 DOI: 10.1093/abt/tby004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Multiple myeloma (MM) is a B-cell malignancy that is incurable for the majority of patients. New treatments are urgently needed. Recombinant immunotoxins (RITs) are chimeric proteins that are composed of the Fv or Fab portion of an antibody fused to a bacterial toxin. B-cell maturation antigen (BCMA) is a lineage-restricted differentiation protein and an ideal target for antibody-based treatments for MM. Methods RITs were produced by expressing plasmids encoding the components of the anti-BCMA RITs in Escherichia coli followed by inclusion body preparation, solubilization, renaturation, and purification by column chromatography. The cytotoxic activity of RITs was tested in vitro by WST-8 assays. We also measured their binding to human and mouse serum albumins and to BCMA and measured their serum half-life in mice. Results Using Fvs from different anti-BCMA antibodies, we produced RITs that specifically kill BCMA-expressing MM cells in vitro. To increase the serum half-life in vivo, we generated RITs that are fused with albumin-binding domains (ABDs). All RITs with ABDs have some decreased activity compared to the parent RIT, which is not due to decreased binding to BCMA. Conclusions Various new anti-BCMA immunotoxins were produced and evaluated. None of these were better than LMB-75 (anti-BCMA BM306-disulfide-stabilized Fv-LRggs) supporting the further preclinical development of LMB-75.
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Affiliation(s)
- Zoe Shancer
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892,USA
| | - Matthew Williams
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892,USA
| | - Austin Igelman
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892,USA
| | - Satoshi Nagata
- National Institutes of Biomedical Innovation, Health and Nutrition, Osaka 5670085, Japan
| | - Tomoko Ise
- National Institutes of Biomedical Innovation, Health and Nutrition, Osaka 5670085, Japan
| | - Ira Pastan
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892,USA
| | - Tapan K Bera
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892,USA
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Noda Y, Goshima S, Nagata S, Miyoshi T, Kawada H, Kawai N, Tanahashi Y, Matsuo M. Right adrenal vein: comparison between adaptive statistical iterative reconstruction and model-based iterative reconstruction. Clin Radiol 2018; 73:594.e1-594.e6. [DOI: 10.1016/j.crad.2018.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 01/15/2018] [Indexed: 11/29/2022]
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29
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Khan S, Zafar N, Khan SS, Setua S, Behrman SW, Stiles ZE, Yallapu MM, Sahay P, Ghimire H, Ise T, Nagata S, Wang L, Wan JY, Pradhan P, Jaggi M, Chauhan SC. Clinical significance of MUC13 in pancreatic ductal adenocarcinoma. HPB (Oxford) 2018; 20:563-572. [PMID: 29352660 PMCID: PMC5995635 DOI: 10.1016/j.hpb.2017.12.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/22/2017] [Accepted: 12/19/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Poor prognosis of pancreatic cancer (PanCa) is associated with lack of an effective early diagnostic biomarker. This study elucidates significance of MUC13, as a diagnostic/prognostic marker of PanCa. METHODS MUC13 was assessed in tissues using our in-house generated anti-MUC13 mouse monoclonal antibody and analyzed for clinical correlation by immunohistochemistry, immunoblotting, RT-PCR, computational and submicron scale mass-density fluctuation analyses, ROC and Kaplan Meir curve analyses. RESULTS MUC13 expression was detected in 100% pancreatic intraepithelial neoplasia (PanIN) lesions (Mean composite score: MCS = 5.8; AUC >0.8, P < 0.0001), 94.6% of pancreatic ductal adenocarcinoma (PDAC) samples (MCS = 9.7, P < 0.0001) as compared to low expression in tumor adjacent tissues (MCS = 4, P < 0.001) along with faint or no expression in normal pancreatic tissues (MCS = 0.8; AUC >0.8; P < 0.0001). Nuclear MUC13 expression positively correlated with nodal metastasis (P < 0.05), invasion of cancer to peripheral tissues (P < 0.5) and poor patient survival (P < 0.05; prognostic AUC = 0.9). Submicron scale mass density and artificial intelligence based algorithm analyses also elucidated association of MUC13 with greater morphological disorder (P < 0.001) and nuclear MUC13 as strong predictor for cancer aggressiveness and poor patient survival. CONCLUSION This study provides significant information regarding MUC13 expression/subcellular localization in PanCa samples and supporting the use anti-MUC13 MAb for the development of PanCa diagnostic/prognostic test.
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Affiliation(s)
- Sheema Khan
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Nadeem Zafar
- Department of Pathology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Shabia S. Khan
- Department of Computer Science, University of Kashmir, Srinagar, India
| | - Saini Setua
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Stephen W. Behrman
- Department of Surgery, Baptist Memorial Hospital and the University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Zachary E Stiles
- Department of Surgery, Baptist Memorial Hospital and the University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Murali M. Yallapu
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Peeyush Sahay
- Department of Physics, University of Memphis, Memphis, Tennessee, USA
| | - Hemendra Ghimire
- Department of Physics, University of Memphis, Memphis, Tennessee, USA
| | - Tomoko Ise
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-City, Osaka, Japan
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-City, Osaka, Japan
| | - Lei Wang
- Department of Biostatistics & Epidemiology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Jim Y. Wan
- Department of Biostatistics & Epidemiology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Prabhakar Pradhan
- Department of Physics, University of Memphis, Memphis, Tennessee, USA
| | - Meena Jaggi
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Subhash C. Chauhan
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee, USA,Corresponding Authors: Subhash C. Chauhan, Ph.D., Professor, Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 19 South Manassas, Cancer Research Building, Memphis, TN, 38163. Phone: (901) 448-2175. Fax: (901) 448-1051.
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Evans RL, Pottala JV, Nagata S, Egland KA. Longitudinal autoantibody responses against tumor-associated antigens decrease in breast cancer patients according to treatment modality. BMC Cancer 2018; 18:119. [PMID: 29386014 PMCID: PMC5793406 DOI: 10.1186/s12885-018-4022-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 09/16/2016] [Accepted: 01/23/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Metastatic breast cancer (BCa) is most often diagnosed months after completion of treatment of the primary tumor when a patient reports physical symptoms. Besides a physical examination, no other alternative recurrence screening method is recommended for routine follow-up care. Detection of autoantibodies against tumor-associated antigens (TAAs) has demonstrated promise for distinguishing healthy women from patients diagnosed with primary BCa. However, it is unknown what changes occur to patient autoantibody levels during and after treatment. METHODS Three serial blood draws were collected from 200 BCa patients: before treatment, 6 and 12 months after surgery. Patients were categorized according to treatment regimen, including surgery, chemotherapy, radiation, trastuzumab and hormonal therapies. The longitudinal samples were assayed for autoantibody responses against 32 conformation-carrying TAAs using a Luminex multiplex bead assay. RESULTS The treatment modality groups that had the greatest decrease in autoantibody response levels were radiation + hormonal therapy; radiation + chemotherapy; and radiation + hormonal therapy + chemotherapy. For these three treatment groups, autoantibody responses against 9 TAAs (A1AT, ANGPTL4, CAPC, CST2, DKK1, GFRA1, GRN, LGALS3 and LRP10) were significantly reduced at 12 months after surgery compared to before treatment. One TAA, GRP78, had a significantly increased autoantibody response after 12 months. CONCLUSIONS Single treatment regimens alone did not significantly alter autoantibodies levels against the studied TAAs. Radiation treatment was the common denominator of the three most affected groups for significant changes in autoantibody response levels.
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Affiliation(s)
- Rick L Evans
- Cancer Biology Research Center, Sanford Research, Sioux Falls, SD, USA
| | - James V Pottala
- Sanford School of Medicine, University of South Dakota, 2301 East 60th Street North, Sioux Falls, SD, 57104, USA
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-City, Osaka, 5670085, Japan
| | - Kristi A Egland
- Cancer Biology Research Center, Sanford Research, Sioux Falls, SD, USA. .,Sanford School of Medicine, University of South Dakota, 2301 East 60th Street North, Sioux Falls, SD, 57104, USA.
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Bera TK, Abe Y, Ise T, Oberle A, Gallardo D, Liu XF, Nagata S, Binder M, Pastan I. Recombinant immunotoxins targeting B-cell maturation antigen are cytotoxic to myeloma cell lines and myeloma cells from patients. Leukemia 2017; 32:569-572. [PMID: 29149102 PMCID: PMC5808081 DOI: 10.1038/leu.2017.315] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- T K Bera
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Cancer Biology Research, Bethesda, MD, USA
| | - Y Abe
- Center, Sanford Research, Sioux Falls, SD, USA
| | - T Ise
- Center, Sanford Research, Sioux Falls, SD, USA
| | - A Oberle
- Klinik für Onkologie, Hämatologie und KMT mit Sektion Pneumologie Universitätsklinikum Hamburg Eppendorf, Hamburg, Germany
| | - D Gallardo
- Leidos Biomedical Research, Inc., National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - X-F Liu
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Cancer Biology Research, Bethesda, MD, USA
| | - S Nagata
- Center, Sanford Research, Sioux Falls, SD, USA
| | - M Binder
- Klinik für Onkologie, Hämatologie und KMT mit Sektion Pneumologie Universitätsklinikum Hamburg Eppendorf, Hamburg, Germany
| | - I Pastan
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Cancer Biology Research, Bethesda, MD, USA
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Murakami T, Ishigaki K, Ishiguro K, Sato T, Shichiji M, Nagata S, Uchiyama T, Kuru S, Nakayama T. Assessment of skeletal muscle in patients with Fukuyama congenital muscular dystrophy (FCMD) using bioelectrical impedance analysis (BIA). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2308] [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: 10/18/2022]
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Sato T, Adachi M, Nakamura K, Zushi M, Goto K, Murakami T, Ishiguro K, Shichiji M, Saito K, Ikai T, Osawa M, Kondo I, Nagata S, Ishigaki K. The gross motor function measure is valid for Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.472] [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: 10/18/2022]
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Ishiguro K, Murakami T, Kajino S, Shichiji M, Sato T, Hayashi Y, Nakayama T, Kuru S, Osawa M, Nagata S, Ishigaki K. Characteristic findings of skeletal muscle MRI in childhood-onset Rippling muscle disease. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Murakami T, Ishigai K, Ishiguro K, Sato T, Shichiji M, Ikeda M, Nagata S, Uchida T, Kuru S, Nakayama T. Evaluation of skeletal muscle in patients with Fukuyama congenital muscular dystrophy (FCMD) using bioelectrical impedance analysis. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.473] [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: 11/17/2022]
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Shichiji M, Ishigaki K, Ishiguro K, Sato T, Murakami T, Matsumura T, Osawa M, Nagata S. Results of a Japanese nationwide survey on congenital myotonic dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.305] [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: 10/18/2022]
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Abstract
There are few data regarding the role of probiotics as a dietary intervention in the management of obesity in children. An open prospective examination was conducted to clarify the effects of Lactobacillus casei strain Shirota (LcS)-containing beverages in obese children. We compared the intestinal microbiota and organic acid levels between 12 obese (average age, 10.8 years; body mass index (BMI) Z score, 2.7±1.7) and 22 control children(average age, 8.5 years; BMI Z score, 0.1±0.7), and pre- and post-intervention in the obese children. The obese group underwent diet and exercise therapy for 6 months and then were given an LcS beverage daily for another 6 months and the body weight and serological markers were monitored. Significant reductions in the faecal concentrations of Bifidobacterium (obese group, 7.9±1.5 vs non-obese group, 9.8±0.5 Log10cells/g; P<0.01) along with a significant decline in the Bacteroides fragilis group, Atopobium cluster and Lactobacillus gasseri subgroup, and acetic acid (obese group, 45.1±16.9 vs non-obese group, 57.9±17.6 μmol/g; P<0.05) were observed in the obese group at baseline. A significant decline in body weight (-2.9±4.6%; P<0.05) and an elevation in the high density lipoprotein cholesterol level (+11.1±17.6%; P<0.05) were observed 6 months after ingestion of the LcS beverage compared to baseline. Furthermore, a significant increase in the faecal concentration of Bifidobacterium (7.0±1.2 before ingestion vs 9.1±1.2 Log10cells/g after ingestion; P<0.01) and an apparent increase in the acetic acid concentration (7.0±1.2 before ingestion vs 9.1±1.2 Log10cells/g after ingestion; P<0.01) were observed 6 months after ingestion. LcS contributed to weight loss while also improving the lipid metabolism in obese children via a significant increase in the faecal Bifidobacterium numbers and the acetic acid concentration.
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Affiliation(s)
- S. Nagata
- Department of Paediatrics, School of Medicine, Tokyo Women’s Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
- Probiotics Research Laboratory, Juntendo University Postgraduate School, 3rd floor, 2-9-8 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Chiba
- Department of Paediatrics, School of Medicine, Tokyo Women’s Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
- Probiotics Research Laboratory, Juntendo University Postgraduate School, 3rd floor, 2-9-8 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - C. Wang
- Probiotics Research Laboratory, Juntendo University Postgraduate School, 3rd floor, 2-9-8 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Yamashiro
- Probiotics Research Laboratory, Juntendo University Postgraduate School, 3rd floor, 2-9-8 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Nagpal R, Tsuji H, Takahashi T, Nomoto K, Kawashima K, Nagata S, Yamashiro Y. Gut dysbiosis following C-section instigates higher colonisation of toxigenic Clostridium perfringens in infants. Benef Microbes 2017; 8:353-365. [PMID: 28504574 DOI: 10.3920/bm2016.0216] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein we investigated the intestinal carriage of α-toxigenic and enterotoxigenic Clostridium perfringens during infancy, focusing on its association with other gut microbes and mode of delivery and feeding. Faecal samples from 89 healthy term infants were collected at age 7 days, 1 month, 3 months, 6 months and 3 years. C. perfringens was quantified by qPCR; other gut bacteria were quantified by reverse-transcription-qPCR. Alpha-toxigenic C. perfringens was detected in 3.4% infants at day 7 but was present in 35-40% infants at subsequent time-points, with counts ranging from 103-107 cells/g faeces. Enterotoxigenic C. perfringens remained undetected at day 7 but was detected in 1.1, 4.5, 10.1 and 4.5% infants at 1 month, 3 months, 6 months and 3 years, respectively. Intriguingly, infants carrying α-toxigenic C. perfringens had lower levels of Bacteroides fragilis group, bifidobacteria, lactobacilli and organic acids as compared to non-carriers. Further analyses revealed that, compared to vaginally-born infants, caesarean-born infants had higher carriage of C. perfringens and lower levels of B. fragilis group, bifidobacteria, lactobacilli and faecal organic acids during first 6 months. Compared to formula-fed infants, breast-fed infants were slightly less often colonised with C. perfringens; and within caesarean-born infants, breast-fed infants had slightly lower levels of C. perfringens and higher levels of B. fragilis group, bifidobacteria, and lactobacilli than formula-fed infants. This study demonstrates the quantitative dynamics of toxigenic C. perfringens colonisation in infants during the early years of life. Caesarean-born infants acquire a somewhat perturbed microbiota, and breast-feeding might be helpful in ameliorating this dysbiosis. Higher carriage of toxigenic C. perfringens in healthy infants is intriguing and warrants further investigation of its sources and clinical significance in infants, particularly the caesarean-born who may represent a potential reservoir of this opportunistic pathogen and might be more prone to associated illnesses.
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Affiliation(s)
- R Nagpal
- 1 Laboratory for Probiotics Research (Yakult), Juntendo University, Graduate School of Medicine, Hongo 2-9-8-3F, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Tsuji
- 2 Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - T Takahashi
- 2 Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Nomoto
- 2 Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Kawashima
- 3 Gonohashi Obstetrics and Gynecology Hospital, 6 Chome-1-6 Kameido, Koto, Tokyo 136-0071, Japan
| | - S Nagata
- 4 Department of Pediatrics, School of Medicine, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Y Yamashiro
- 1 Laboratory for Probiotics Research (Yakult), Juntendo University, Graduate School of Medicine, Hongo 2-9-8-3F, Bunkyo-ku, Tokyo 113-0033, Japan
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Toh K, Shikama T, Nagata S, Tsuchiya B, Kakuta T, Hoshiya T, Ishihara M. Search for Radioluminescent Materials Working at Elevated Temperature. Fusion Science and Technology 2017. [DOI: 10.13182/fst03-a381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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)
- K. Toh
- Institute for Materials Research, Tohoku University, Sendai, 980-8577 Japan
| | - T. Shikama
- Institute for Materials Research, Tohoku University, Sendai, 980-8577 Japan
| | - S. Nagata
- Institute for Materials Research, Tohoku University, Sendai, 980-8577 Japan
| | - B. Tsuchiya
- Institute for Materials Research, Tohoku University, Sendai, 980-8577 Japan
| | - T. Kakuta
- Tokai Research Establishment, Japan Atomic Research Institute, Tokai, 319-1195 Japan
| | - T. Hoshiya
- Oarai Research Establishment, Japan Atomic Research Institute, Oarai, 311-1394 Japan
| | - M. Ishihara
- Oarai Research Establishment, Japan Atomic Research Institute, Oarai, 311-1394 Japan
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Tsuchiya B, Nagata S, Toh K, Shikama T, Yamauchi M, Nishitani T. Radiation Damage of Proton Conductive Ceramics Under 14 MeV Fast Neutron Irradiation. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a800] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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)
- B. Tsuchiya
- Institute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and
| | - S. Nagata
- Institute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and
| | - K. Toh
- Institute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and
| | - T. Shikama
- Institute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and
| | - M. Yamauchi
- Japan Atomic Energy Research Institute, Tokai Research Establishment: Facility of Fast Neutron Source, Tokai-mura, Ibaraki 319-1195, Japan, and
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Tokai Research Establishment: Facility of Fast Neutron Source, Tokai-mura, Ibaraki 319-1195, Japan, and
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Iizaka S, Nagata S, Sanada H. Nutritional Status and Habitual Dietary Intake Are Associated with Frail Skin Conditions in Community-Dwelling Older People. J Nutr Health Aging 2017; 21:137-146. [PMID: 28112767 DOI: 10.1007/s12603-016-0736-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Prevention of frail skin is important in older people because frail skin is associated with a risk of injury in this population. In this study, we investigated the association of nutritional status and habitual dietary intake with skin conditions in community-dwelling older people. DESIGN Cross-sectional study. SETTING Three community settings in Japan from autumn to winter. PARTICIPANTS Older people aged ≥65 years without care-need certification (n=118). MEASUREMENTS Malnutrition and obesity were evaluated to assess the nutritional status. Nutrient and food group intakes per 1000 kcal were evaluated using a brief self-administered diet history questionnaire. Dietary patterns based on food groups were evaluated by principal component analysis. Skin condition parameters, including stratum corneum hydration, appearance of xerosis (specific symptom sum score [SRRC score]), and dermal intensity by high-frequency ultrasonography, were measured on a lower leg. Multiple linear regression analysis was performed with adjustment for confounders. RESULTS The mean (standard deviation) age was 74.1 (4.8) years, and 83.1% of participants were female. A higher intake of plant fat (p=0.018) was associated with a lower SRRC score. Higher intakes of α-tocopherol (p=0.050) and vitamin C (p=0.017) were associated with increased dermal intensity. A body mass index ≥25 (p=0.016) was associated with decreased dermal intensity. A dietary pattern characterized by higher vegetable and fruit intake was associated with a better skin condition. CONCLUSION Plant fat, antioxidant vitamins, and a dietary pattern characterized by vegetables and fruits showed positive and obesity showed negative associations for frail skin in community-dwelling older people.
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Affiliation(s)
- S Iizaka
- Shinji Iizaka, RN, PhD, School of Nutrition, College of Nursing and Nutrition, Shukutoku University. 673 Nitonacho, Chuo-ku, Chiba-shi, Chiba, Japan Phone:81-43-305-1881 E-mail:
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Ishigaki K, Ihara C, Mori-Yoshimura M, Murakami T, Sato T, Ishiguro K, Shichiji M, Nagata S, Kaiya H, Osawa M. Japanese nationwide registry for Fukuyama congenital muscular dystrophy patients. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.284] [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: 10/21/2022]
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Khan S, Ebeling MC, Sikander M, Yallapu MM, Ise T, Nagata S, Behrman SW, Zafar N, Wan JY, Ghimire HM, Sahay P, Pradhan P, Jaggi M, Chauhan SC. Abstract 4592: MUC13 interaction with receptor tyrosine kinase HER2 drives pancreatic ductal adenocarcinoma progression. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-4592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Pancreatic Ductal Adenocarcinoma (PDAC) is the fourth leading cause of cancer related death in the United States and has a very poor survival rate due to late diagnosis. MUC13 is a recently identified high molecular weight glycoprotein that is upregulated in PDAC and its progression is allowed via alterations of multiple signaling pathways. MUC13 is aberrantly expressed in PDAC and generally correlates with increased expression of HER2, however, the underlying mechanism remains poorly understood. MUC13 consists of three EGF-like domains that may serve as a ligand for EGF receptors, such as HER2, and modulate EGFR signaling pathways. We sought to better characterize the interaction of MUC13 with HER2 in PDAC.
Methods: MUC13 and HER2 interaction was studied using reciprocal co-immunoprecipitation, immunofluorescence, proximity ligation, Western blotting, co-capping assays in human PDAC cell lines and immunohistofluorescence techniques in human tissues. Tissue microarrays prepared from formalin-fixed, paraffin-embedded specimens of PDAC were assessed for expression of MUC13 and HER2 using our own laboratory generated anti-MUC13 mouse monoclonal antibody (MAb) through confocal immunofluorescence. The association of MUC13 and HER2 co-localization with nuclear chromatin organization was analyzed to study the stage or degree of aggressiveness of the pancreatic cancer using Dapi stained confocal images of tissues.
Results: MUC13 co-localizes and interacts with HER2 in PDAC cell lines. The results from this study demonstrate that MUC13 functionally interacts and activates HER2 at Tyrp1248 in PDAC cells, leading to stimulation of HER2 signaling cascade including, ERK1/2, FAK, AKT and PAK1 as well as regulation of the growth, cytoskeleton remodeling, motility and invasion of PDAC cells - all collectively contributing to PDAC progression. The interaction between MUC13-HER2 binding resulting in their tumorigenic characteristics likely occurs at the 1st and 2nd but not the 3rd domains of MUC13 as the EGF 1 and 2 deletion mutant constructs of MUC13 failed to promote proliferation and invasion of cells. These phenotypic effects of MUC13-HER2 co-localization could be effectively compromised by depleting MUC13. MUC13-HER2 co-localization also held true in PDAC human tissues with a strong functional correlation that contributed to an increased degree of disorder and cancer aggressiveness.
Conclusions: 1) MUC13 can be detected in formalin-fixed paraffin-embedded tissues using our anti-MUC13 MAb. 2) MUC13 co-localizes and activates HER2 and its downstream signaling cascade promoting PDAC progression in both cell lines and human tissue. 3) This process is reversed by depletion of MUC13. 4) This MUC13-HER2 interaction may potentially be manipulated for targeted therapeutics in patients harboring PDAC.
Citation Format: Sheema Khan, Mara C. Ebeling, Mohammad Sikander, Murali M. Yallapu, Tomoko Ise, Satoshi Nagata, Stephen W. Behrman, Nadeem Zafar, Jim Y. Wan, Hemendra M. Ghimire, Peeyush Sahay, Prabhakar Pradhan, Meena Jaggi, Subhash C. Chauhan. MUC13 interaction with receptor tyrosine kinase HER2 drives pancreatic ductal adenocarcinoma progression. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4592.
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Affiliation(s)
- Sheema Khan
- 1University of Tennessee Health Science Center, Memphis, TN
| | | | | | | | | | | | | | - Nadeem Zafar
- 1University of Tennessee Health Science Center, Memphis, TN
| | - Jim Y. Wan
- 1University of Tennessee Health Science Center, Memphis, TN
| | | | | | | | - Meena Jaggi
- 1University of Tennessee Health Science Center, Memphis, TN
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Li H, Borrego F, Nagata S, Tolnay M. Fc Receptor-like 5 Expression Distinguishes Two Distinct Subsets of Human Circulating Tissue-like Memory B Cells. J Immunol 2016; 196:4064-74. [PMID: 27076679 DOI: 10.4049/jimmunol.1501027] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 02/29/2016] [Indexed: 12/22/2022]
Abstract
Fc receptor-like (FCRL) 5 is a novel IgG binding protein expressed on B cells, with the capacity to regulate Ag receptor signaling. We assessed FCRL5 expression on circulating B cells from healthy donors and found that FCRL5(+) cells are most enriched among atypical CD21(-/lo)/CD27(-) tissue-like memory (TLM) B cells, which are abnormally expanded in several autoimmune and infectious diseases. Using multicolor flow cytometry, FCRL5(+) TLM cells were found to express more CD11c and several inhibitory receptors than did the FCRL5(-) TLM subset. The homing receptor profiles of the two TLM subsets shared features consistent with migration away from lymphoid tissues, but they also displayed distinct differences. Analysis of IgH V regions in single cells indicated that although both subsets are diverse, the FCRL5(+) subset accumulated significantly more somatic mutations. Furthermore, the FCRL5(+) subset had more switched isotype expression and more extensive proliferative history. Microarray analysis and quantitative RT-PCR demonstrated that the two TLM subsets possess distinct gene expression profiles, characterized by markedly different CD11c, SOX5, T-bet, and RTN4R expression, as well as differences in expression of inhibitory receptors. Functional analysis revealed that the FCRL5(+) TLM subset responds poorly to multiple stimuli compared with the FCRL5(-) subset, as reflected by reduced calcium mobilization and blunted cell proliferation. We propose that the FCRL5(+) TLM subset, but not the FCRL5(-) TLM subset, underwent Ag-driven development and is severely dysfunctional. The present study elucidates the heterogeneity of TLM B cells and provides the basis to dissect their roles in the pathogenesis of inflammatory and infectious diseases.
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Affiliation(s)
- Huifang Li
- Office of Biotechnology Products, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993
| | - Francisco Borrego
- Immunopathology Group, BioCruces Health Research Institute, 48903 Barakaldo, Spain; Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain; and
| | - Satoshi Nagata
- Center for Drug Design Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan
| | - Mate Tolnay
- Office of Biotechnology Products, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993;
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Yamaji K, Nagata S, Haruma T, Ohnuki T, Kozaki T, Watanabe N, Nanba K. Root endophytic bacteria of a (137)Cs and Mn accumulator plant, Eleutherococcus sciadophylloides, increase (137)Cs and Mn desorption in the soil. J Environ Radioact 2016; 153:112-119. [PMID: 26760221 DOI: 10.1016/j.jenvrad.2015.12.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 12/09/2015] [Accepted: 12/17/2015] [Indexed: 06/05/2023]
Abstract
We found that root endophytes of (137)Cs accumulator plant produce siderophores, resulting in the desorption of (137)Cs from the contaminated soil collected at Fukushima, Japan. We selected an endemic Japanese deciduous tree, Eleutherococcus sciadophylloides (Franch. et Sav), that accumulates high concentrations of (137)Cs and Mn. Root endophytic bacteria were isolated from E. sciadophylloides and microbial siderophore production was evaluated via chrome azurol S (CAS) Fe and CAS Al assays. Of the 463 strains that we isolated, 107 (23.1%) produced the siderophores. Using eight strains that showed high siderophore production in our assays, we examined desorption of (137)Cs, Mn, Fe and Al by the bacterial culture filtrates from (137)Cs-contaminated soil after decomposing the soil organic matter using hydrogen peroxide. We found (137)Cs and Mn desorption concomitant with Al and Fe desorption, as well as a decrease of pH. We also detected succinic acid, a well-known siderophore, in the bacterial culture filtrates of our two root endophytic bacteria. Our results strongly suggest that the root endophytic bacteria of E. sciadophylloides produce the siderophores that enhance (137)Cs and Mn desorption in the rhizosphere, making the resulting (137)Cs and Mn ions easier for E. sciadophylloides to absorb from the rhizosphere.
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Affiliation(s)
- Keiko Yamaji
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba, 305-8572, Japan.
| | - Satoshi Nagata
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba, 305-8572, Japan
| | - Toshikatsu Haruma
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba, 305-8572, Japan
| | - Toshihiko Ohnuki
- Advanced Science Research Center, Japan Atomic Energy Agency, 4-49, Muramatsu, Tokai, Ibaraki 319-1195, Japan
| | - Tamotsu Kozaki
- Graduate School of Engineering, Hokkaido University, Kita 13, Nishi 8, Kitaku, Sapporo, Hokkaido, 060-8628, Japan
| | - Naoko Watanabe
- Graduate School of Engineering, Hokkaido University, Kita 13, Nishi 8, Kitaku, Sapporo, Hokkaido, 060-8628, Japan
| | - Kenji Nanba
- Faculty of Symbiotic Systems Science, Fukushima University, 1, Kanayagawa, Fukushima, 960-1296, Japan
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Nagata S, Suzuki J, Segawa K, Fujii T. Exposure of phosphatidylserine on the cell surface. Cell Death Differ 2016; 23:952-61. [PMID: 26891692 DOI: 10.1038/cdd.2016.7] [Citation(s) in RCA: 242] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/11/2016] [Indexed: 12/15/2022] Open
Abstract
Phosphatidylserine (PtdSer) is a phospholipid that is abundant in eukaryotic plasma membranes. An ATP-dependent enzyme called flippase normally keeps PtdSer inside the cell, but PtdSer is exposed by the action of scramblase on the cell's surface in biological processes such as apoptosis and platelet activation. Once exposed to the cell surface, PtdSer acts as an 'eat me' signal on dead cells, and creates a scaffold for blood-clotting factors on activated platelets. The molecular identities of the flippase and scramblase that work at plasma membranes have long eluded researchers. Indeed, their identity as well as the mechanism of the PtdSer exposure to the cell surface has only recently been revealed. Here, we describe how PtdSer is exposed in apoptotic cells and in activated platelets, and discuss PtdSer exposure in other biological processes.
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Affiliation(s)
- S Nagata
- Laboratory of Biochemistry & Immunology, Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - J Suzuki
- Laboratory of Biochemistry & Immunology, Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - K Segawa
- Laboratory of Biochemistry & Immunology, Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - T Fujii
- Laboratory of Biochemistry & Immunology, Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
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Kusano K, Nomura M, Toju K, Ishikawa Y, Minamijima Y, Yamashita S, Nagata S. Pharmacokinetics of procaterol in thoroughbred horses. J Vet Pharmacol Ther 2015; 39:264-70. [PMID: 26538319 DOI: 10.1111/jvp.12272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 09/19/2015] [Indexed: 11/29/2022]
Abstract
Procaterol (PCR) is a beta-2-adrenergic bronchodilator widely used in Japanese racehorses for treating lower respiratory disease. The pharmacokinetics of PCR following single intravenous (0.5 μg/kg) and oral (2.0 μg/kg) administrations were investigated in six thoroughbred horses. Plasma and urine concentrations of PCR were measured using liquid chromatography-mass spectrometry. Plasma PCR concentration following intravenous administration showed a biphasic elimination pattern. The systemic clearance was 0.47 ± 0.16 L/h/kg, the steady-state volume of the distribution was 1.21 ± 0.23 L/kg, and the elimination half-life was 2.85 ± 1.35 h. Heart rate rapidly increased after intravenous administration and gradually decreased thereafter. A strong correlation between heart rate and plasma concentration of PCR was observed. Plasma concentrations of PCR after oral administration were not quantifiable in all horses. Urine concentrations of PCR following intravenous and oral administrations were quantified in all horses until 32 h after administration. Urine PCR concentrations were not significantly different on and after 24 h between intravenous and oral administrations. These results suggest that the bioavailability of orally administrated PCR in horses is very poor, and the drug was eliminated from the body slowly based on urinary concentrations. This report is the first study to demonstrate the pharmacokinetic character of PCR in thoroughbred horses.
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Affiliation(s)
- K Kusano
- Equine Department, Japan Racing Association, Minato, Tokyo, Japan
| | - M Nomura
- Racehorse Hospital, Ritto Training Center, Japan Racing Association, Ritto, Shiga, Japan
| | - K Toju
- Racehorse Hospital, Ritto Training Center, Japan Racing Association, Ritto, Shiga, Japan
| | - Y Ishikawa
- Racehorse Hospital, Ritto Training Center, Japan Racing Association, Ritto, Shiga, Japan
| | - Y Minamijima
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
| | - S Yamashita
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
| | - S Nagata
- Laboratory of Racing Chemistry, Utsunomiya, Tochigi, Japan
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Shichiji M, Ishigaki K, Ishiguro K, Sato T, Murakami T, Muto A, Osawa M, Nagata S. Perinatal complications in patients with congenital myotonic dystrophy. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.100] [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: 11/29/2022]
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Bin Dhuban K, d'Hennezel E, Nashi E, Bar-Or A, Rieder S, Shevach EM, Nagata S, Piccirillo CA. Coexpression of TIGIT and FCRL3 identifies Helios+ human memory regulatory T cells. J Immunol 2015; 194:3687-96. [PMID: 25762785 DOI: 10.4049/jimmunol.1401803] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 01/30/2015] [Indexed: 12/13/2022]
Abstract
Two distinct subsets of CD4(+)Foxp3(+) regulatory T (Treg) cells have been described based on the differential expression of Helios, a transcription factor of the Ikaros family. Efforts to understand the origin and biological roles of these Treg populations in regulating immune responses have, however, been hindered by the lack of reliable surface markers to distinguish and isolate them for subsequent functional studies. Using a single-cell cloning strategy coupled with microarray analysis of different Treg functional subsets in humans, we identify the mRNA and protein expression of TIGIT and FCRL3 as a novel surface marker combination that distinguishes Helios(+)FOXP3(+) from Helios(-)FOXP3(+) memory cells. Unlike conventional markers that are modulated on conventional T cells upon activation, we show that the TIGIT/FCRL3 combination allows reliable identification of Helios(+) Treg cells even in highly activated conditions in vitro as well as in PBMCs of autoimmune patients. We also demonstrate that the Helios(-)FOXP3(+) Treg subpopulation harbors a larger proportion of nonsuppressive clones compared with the Helios(+)FOXP3(+) cell subset, which is highly enriched for suppressive clones. Moreover, we find that Helios(-) cells are exclusively responsible for the productions of the inflammatory cytokines IFN-γ, IL-2, and IL-17 in FOXP3(+) cells ex vivo, highlighting important functional differences between Helios(+) and Helios(-) Treg cells. Thus, we identify novel surface markers for the consistent identification and isolation of Helios(+) and Helios(-) memory Treg cells in health and disease, and we further reveal functional differences between these two populations. These new markers should facilitate further elucidation of the functional roles of Helios-based Treg heterogeneity.
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Affiliation(s)
- Khalid Bin Dhuban
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec H3G 1A4, Canada; Federation of Clinical Immunology Centre of Excellence, Research Institute of the McGill University Health Centre, Montreal, Quebec H3G 1A4, Canada
| | - Eva d'Hennezel
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec H3G 1A4, Canada; Federation of Clinical Immunology Centre of Excellence, Research Institute of the McGill University Health Centre, Montreal, Quebec H3G 1A4, Canada
| | - Emil Nashi
- Division of Allergy and Immunology, McGill University Health Centre, Montreal, Quebec H2C 2P2, Canada
| | - Amit Bar-Or
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec H3A 2B4, Canada
| | - Sadiye Rieder
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892; and
| | - Ethan M Shevach
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892; and
| | - Satoshi Nagata
- Cancer Biology Research Center, Sanford Research, Sioux Falls, SD 57104
| | - Ciriaco A Piccirillo
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec H3G 1A4, Canada; Federation of Clinical Immunology Centre of Excellence, Research Institute of the McGill University Health Centre, Montreal, Quebec H3G 1A4, Canada;
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Ishiguro K, Ishigaki K, Sato T, Murakami T, Saito K, Osawa M, Nagata S. G.P.318. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.408] [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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