1
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Toyoda S, Handa T, Yong H, Takahashi H, Shiwaku H. IMPDH2 forms spots at branching sites and distal ends of astrocyte stem processes. Genes Cells 2024; 29:150-158. [PMID: 38009721 DOI: 10.1111/gtc.13088] [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: 10/10/2023] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 11/29/2023]
Abstract
Inosine monophosphate dehydrogenase (IMPDH) is a rate-limiting enzyme in the de novo GTP biosynthesis pathway. Recent studies suggest that IMPDH2, an isoform of IMPDH, can localize to specific subcellular compartments under certain conditions and regulate site-specific GTP availability and small GTPase activity in invasive cancer cells. However, it is unclear whether IMPDH2 plays a site-specific regulatory role in subcellular functions in healthy cells. In this study, we focused on brain cells and examined the localization pattern of IMPDH2. We discovered that IMPDH2 forms localized spots in the astrocytes of the adult mouse hippocampus. Further analysis of spot distribution in primary astrocyte cultures revealed that IMPDH2 spots are predominantly localized on branching sites and distal ends of astrocyte stem processes. Our findings suggest a potential unidentified role for IMPDH2 and GTP synthesis specifically at specialized nodes of astrocyte branches.
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Affiliation(s)
- Saori Toyoda
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takehisa Handa
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Huang Yong
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
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2
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Matsuki H, Mandai S, Shiwaku H, Koide T, Takahashi N, Yanagi T, Inaba S, Ida S, Fujiki T, Mori Y, Ando F, Mori T, Susa K, Iimori S, Sohara E, Takahashi H, Uchida S. Chronic kidney disease causes blood-brain barrier breakdown via urea-activated matrix metalloproteinase-2 and insolubility of tau protein. Aging (Albany NY) 2023; 15:10972-10995. [PMID: 37889501 PMCID: PMC10637825 DOI: 10.18632/aging.205164] [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: 05/30/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023]
Abstract
Chronic kidney disease (CKD) causes cognitive impairment and contributes to the overall global burden of dementia. However, mechanisms through which the kidneys and brain communicate are not fully understood. We established a CKD mouse model through adenine-induced tubulointerstitial fibrosis. Novel object recognition tests indicated that CKD decreased recognition memory. Sarkosyl-insoluble-proteomic analyses of the CKD mouse hippocampus revealed an accumulation of insoluble MAPT (microtubule-associated protein tau) and RNA-binding proteins such as small nuclear ribonucleoprotein U1 subunit 70 (SNRNP70). Additionally, there was an accumulation of Immunoglobulin G (IgG), indicating blood-brain barrier (BBB) breakdown. We identified that expressions of essential tight-junction protein claudin-5 and adherens-junction protein platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) were decreased in the brain endothelial cells of CKD mice. We determined urea as a major uremic solute that dose dependently decreased both claudin-5 and PECAM-1 expression in the mouse brain endothelial cell line bEnd.3 cells. Gelatin zymography indicated that the serum of CKD mice activated matrix metalloproteinase-2 (MMP2), while marimastat ameliorated the reduction of claudin-5 expression by urea in bEnd.3 cells. This study established a brain proteomic signature of CKD indicating BBB breakdown and insolubility of tau protein, which are pathologically linked to Alzheimer's disease. Urea-mediated activation of MMP2 was partly responsible for BBB breakdown in CKD.
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Affiliation(s)
- Hisazumi Matsuki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Takaaki Koide
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Naohiro Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Tomoki Yanagi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Shunsuke Inaba
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Saaya Ida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Tamami Fujiki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Koichiro Susa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Soichiro Iimori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
- Center for Brain Integration Research, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo City, Tokyo 113-8519, Japan
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3
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Shiwaku H, Katayama S, Gao M, Kondo K, Nakano Y, Motokawa Y, Toyoda S, Yoshida F, Hori H, Kubota T, Ishikawa K, Kunugi H, Ikegaya Y, Okazawa H, Takahashi H. Analyzing schizophrenia-related phenotypes in mice caused by autoantibodies against NRXN1α in schizophrenia. Brain Behav Immun 2023; 111:32-45. [PMID: 37004758 DOI: 10.1016/j.bbi.2023.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 04/04/2023] Open
Abstract
The molecular pathological mechanisms underlying schizophrenia remain unclear; however, genomic analysis has identified genes encoding important risk molecules. One such molecule is neurexin 1α (NRXN1α), a presynaptic cell adhesion molecule. In addition, novel autoantibodies that target the nervous system have been found in patients with encephalitis and neurological disorders. Some of these autoantibodies inhibit synaptic antigen molecules. Studies have examined the association between schizophrenia and autoimmunity; however, the pathological data remain unclear. Here, we identified a novel autoantibody against NRXN1α in patients with schizophrenia (n = 2.1%) in a Japanese cohort (n = 387). None of the healthy control participants (n = 362) were positive for anti-NRXN1α autoantibodies. Anti-NRXN1α autoantibodies isolated from patients with schizophrenia inhibited the molecular interaction between NRXN1α and Neuroligin 1 (NLGN1) and between NRXN1α and Neuroligin 2 (NLGN2). Additionally, these autoantibodies reduced the frequency of the miniature excitatory postsynaptic current in the frontal cortex of mice. Administration of anti-NRXN1α autoantibodies from patients with schizophrenia into the cerebrospinal fluid of mice reduced the number of spines/synapses in the frontal cortex and induced schizophrenia-related behaviors such as reduced cognition, impaired pre-pulse inhibition, and reduced social novelty preference. These changes were improved through the removal of anti-NRXN1α autoantibodies from the IgG fraction of patients with schizophrenia. These findings demonstrate that anti-NRXN1α autoantibodies transferred from patients with schizophrenia cause schizophrenia-related pathology in mice. Removal of anti-NRXN1α autoantibodies may be a therapeutic target for a subgroup of patients who are positive for these autoantibodies.
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Affiliation(s)
- Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan.
| | - Shingo Katayama
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Mengxuan Gao
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Kanoh Kondo
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45, Tokyo 113-8510, Japan
| | - Yuri Nakano
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Yukiko Motokawa
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Saori Toyoda
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Fuyuko Yoshida
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1, Tokyo 187-8553, Japan
| | - Hiroaki Hori
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1, Tokyo 187-8553, Japan
| | - Tetsuo Kubota
- Department of Medical Technology, Tsukuba International University, Ibaraki 300-0051, Japan
| | - Kinya Ishikawa
- The Center for Personalized Medicine for Healthy Aging, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hiroshi Kunugi
- Department of Psychiatry, Teikyo University School of Medicine, Tokyo 173-8605, Japan
| | - Yuji Ikegaya
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; Institute for AI and Beyond, The University of Tokyo, Tokyo 113-0033, Japan; Center for Information and Neural Networks, National Institute of Information and Communications Technology, Suita City, Osaka 565-0871, Japan
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45, Tokyo 113-8510, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
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4
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Shiwaku H, Takahashi H. [Autoantibody-Related Pathology in Schizophrenia]. Brain Nerve 2023; 75:763-767. [PMID: 37287360 DOI: 10.11477/mf.1416202412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the context of discovery of synaptic autoantibodies in patients with encephalitis, autoimmune psychosis with acute encephalopathy and psychosis as the main symptom has been proposed on the basis of those autoantibodies. Correspondingly, autoantibody-related mechanisms have also been proposed in schizophrenia. This paper outlines the relationship between schizophrenia and autoimmune psychosis by describing the relationship between synaptic autoantibodies and schizophrenia and our findings regarding anti-NCAM1 autoantibodies in schizophrenia.
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Affiliation(s)
- Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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5
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Kubota M, Takahata K, Matsuoka K, Sano Y, Yamamoto Y, Tagai K, Tarumi R, Suzuki H, Kurose S, Nakajima S, Shiwaku H, Seki C, Kawamura K, Zhang MR, Takahashi H, Takado Y, Higuchi M. Positron Emission Tomography Assessments of Phosphodiesterase 10A in Patients With Schizophrenia. Schizophr Bull 2022; 49:688-696. [PMID: 36458958 PMCID: PMC10154699 DOI: 10.1093/schbul/sbac181] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
BACKGROUND AND HYPOTHESIS Phosphodiesterase 10A (PDE10A) is a highly expressed enzyme in the basal ganglia, where cortical glutamatergic and midbrain dopaminergic inputs are integrated. Therapeutic PDE10A inhibition effects on schizophrenia have been reported previously, but the status of this molecule in the living patients with schizophrenia remains elusive. Therefore, this study aimed to investigate the central PDE10A status in patients with schizophrenia and examine its relationship with psychopathology, cognition, and corticostriatal glutamate levels. STUDY DESIGN This study included 27 patients with schizophrenia, with 5 antipsychotic-free cases, and 27 healthy controls. Positron emission tomography with [18F]MNI-659, a specific PDE10A radioligand, was employed to quantify PDE10A availability by measuring non-displaceable binding potential (BPND) of the ligand in the limbic, executive, and sensorimotor striatal functional subregions, and in the pallidum. BPND estimates were compared between patients and controls while controlling for age and gender. BPND correlations were examined with behavioral and clinical measures, along with regional glutamate levels quantified by the magnetic resonance spectroscopy. STUDY RESULTS Multivariate analysis of covariance demonstrated a significant main effect of diagnosis on BPND (p = .03). A posthoc test showed a trend-level higher sensorimotor striatal BPND in patients, although it did not survive multiple comparison corrections. BPND in controls in this subregion was significantly and negatively correlated with the Tower of London scores, a cognitive subtest. Striatal or dorsolateral prefrontal glutamate levels did not correlate significantly with BPND in either group. CONCLUSIONS The results suggest altered striatal PDE10A availability and associated local neural dysfunctions in patients with schizophrenia.
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Affiliation(s)
- Manabu Kubota
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Psychiatry, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Keisuke Takahata
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kiwamu Matsuoka
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
| | - Yasunori Sano
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yasuharu Yamamoto
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kenji Tagai
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Psychiatry, The Jikei University Graduate School of Medicine, Minato-ku, Tokyo, Japan
| | - Ryosuke Tarumi
- Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hisaomi Suzuki
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,National Hospital Organization Shimofusa Psychiatric Medical Center, Midori-ku, Chiba, Japan
| | - Shin Kurose
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan.,Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Shinichiro Nakajima
- Department of Neuropsychiatry, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Chie Seki
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
| | - Kazunori Kawamura
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
| | - Ming-Rong Zhang
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yuhei Takado
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
| | - Makoto Higuchi
- Department of Functional Brain Imaging, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inage-ku, Chiba, Japan
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6
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Shiwaku H, Katayama S, Kondo K, Nakano Y, Tanaka H, Yoshioka Y, Fujita K, Tamaki H, Takebayashi H, Terasaki O, Nagase Y, Nagase T, Kubota T, Ishikawa K, Okazawa H, Takahashi H. Autoantibodies against NCAM1 from patients with schizophrenia cause schizophrenia-related behavior and changes in synapses in mice. Cell Rep Med 2022; 3:100597. [PMID: 35492247 PMCID: PMC9043990 DOI: 10.1016/j.xcrm.2022.100597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/31/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022]
Abstract
From genetic and etiological studies, autoimmune mechanisms underlying schizophrenia are suspected; however, the details remain unclear. In this study, we describe autoantibodies against neural cell adhesion molecule (NCAM1) in patients with schizophrenia (5.4%, cell-based assay; 6.7%, ELISA) in a Japanese cohort (n = 223). Anti-NCAM1 autoantibody disrupts both NCAM1-NCAM1 and NCAM1-glial cell line-derived neurotrophic factor (GDNF) interactions. Furthermore, the anti-NCAM1 antibody purified from patients with schizophrenia interrupts NCAM1-Fyn interaction and inhibits phosphorylation of FAK, MEK1, and ERK1 when introduced into the cerebrospinal fluid of mice and also reduces the number of spines and synapses in frontal cortex. In addition, it induces schizophrenia-related behavior in mice, including deficient pre-pulse inhibition and cognitive impairment. In conclusion, anti-NCAM1 autoantibodies in patients with schizophrenia cause schizophrenia-related behavior and changes in synapses in mice. These antibodies may be a potential therapeutic target and serve as a biomarker to distinguish a small but treatable subgroup in heterogeneous patients with schizophrenia. Some patients with schizophrenia are positive for anti-NCAM1 autoantibodies Anti-NCAM1 antibody from schizophrenia patients inhibits NCAM1-NCAM1 interactions Anti-NCAM1 antibody from schizophrenia patients reduces spines and synapses in mice Anti-NCAM1 antibody from patients induces schizophrenia-related behavior in mice
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Affiliation(s)
- Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan.
| | - Shingo Katayama
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Kanoh Kondo
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Yuri Nakano
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | - Hikari Tanaka
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Yuki Yoshioka
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Kyota Fujita
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Haruna Tamaki
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan
| | | | | | | | | | - Tetsuo Kubota
- Department of Medical Technology, Tsukuba International University, Ibaraki 300-0051, Japan
| | - Kinya Ishikawa
- The Center for Personalized Medicine for Healthy Aging, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo 113-8510, Japan.
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7
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Katayama S, Kubota T, Takahashi H, Shiwaku H. Anti-rods/rings autoantibodies in a patient with pancreatic injury. Autoimmun Rev 2021; 21:102922. [PMID: 34418537 DOI: 10.1016/j.autrev.2021.102922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 08/14/2021] [Indexed: 11/17/2022]
Affiliation(s)
- Shingo Katayama
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Tetsuo Kubota
- Department of Microbiology and Immunology, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan.
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8
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Homma H, Tanaka H, Jin M, Jin X, Huang Y, Yoshioka Y, Bertens CJ, Tsumaki K, Kondo K, Shiwaku H, Tagawa K, Akatsu H, Atsuta N, Katsuno M, Furukawa K, Ishiki A, Waragai M, Ohtomo G, Iwata A, Yokota T, Inoue H, Arai H, Sobue G, Sone M, Fujita K, Okazawa H. DNA damage in embryonic neural stem cell determines FTLDs' fate via early-stage neuronal necrosis. Life Sci Alliance 2021; 4:4/7/e202101022. [PMID: 34130995 DOI: 10.26508/lsa.202101022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 12/12/2022] Open
Abstract
The early-stage pathologies of frontotemporal lobal degeneration (FTLD) remain largely unknown. In VCPT262A-KI mice carrying VCP gene mutation linked to FTLD, insufficient DNA damage repair in neural stem/progenitor cells (NSCs) activated DNA-PK and CDK1 that disabled MCM3 essential for the G1/S cell cycle transition. Abnormal neural exit produced neurons carrying over unrepaired DNA damage and induced early-stage transcriptional repression-induced atypical cell death (TRIAD) necrosis accompanied by the specific markers pSer46-MARCKS and YAP. In utero gene therapy expressing normal VCP or non-phosphorylated mutant MCM3 rescued DNA damage, neuronal necrosis, cognitive function, and TDP43 aggregation in adult neurons of VCPT262A-KI mice, whereas similar therapy in adulthood was less effective. The similar early-stage neuronal necrosis was detected in PGRNR504X-KI, CHMP2BQ165X-KI, and TDPN267S-KI mice, and blocked by embryonic treatment with AAV-non-phospho-MCM3. Moreover, YAP-dependent necrosis occurred in neurons of human FTLD patients, and consistently pSer46-MARCKS was increased in cerebrospinal fluid (CSF) and serum of these patients. Collectively, developmental stress followed by early-stage neuronal necrosis is a potential target for therapeutics and one of the earliest general biomarkers for FTLD.
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Affiliation(s)
- Hidenori Homma
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hikari Tanaka
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Meihua Jin
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Xiaocen Jin
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yong Huang
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Yoshioka
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Christian Jf Bertens
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan.,School for Mental Health and Neuroscience (MHeNs), University Eye Clinic Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Kohei Tsumaki
- Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Kanoh Kondo
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroki Shiwaku
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Psychiatry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuhiko Tagawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyasu Akatsu
- Department of Community-Based Medical Education, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Naoki Atsuta
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsutoshi Furukawa
- Division of Community Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Aiko Ishiki
- Department of Geriatrics and Gerontology, Division of Brain Science, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Masaaki Waragai
- Department of Neurology, Higashi Matsudo Municipal Hospital, Chiba, Japan
| | - Gaku Ohtomo
- Department of Neurology, The University of Tokyo, Graduate School of Medicine, Tokyo, Japan
| | - Atsushi Iwata
- Department of Neurology, The University of Tokyo, Graduate School of Medicine, Tokyo, Japan
| | - Takanori Yokota
- Department of Neurology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Haruhisa Inoue
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.,Drug-Discovery Cellular Basis Development Team, RIKEN BioResource Center, Kyoto, Japan
| | - Hiroyuki Arai
- Department of Geriatrics and Gerontology, Division of Brain Science, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Gen Sobue
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaki Sone
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Kyota Fujita
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan .,Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
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9
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Matsumoto Y, Fujino J, Shiwaku H, Miyajima M, Doi S, Hirai N, Jitoku D, Takagi S, Tamura T, Maruo T, Shidei Y, Kobayashi N, Ichihashi M, Noguchi S, Oohashi K, Takeuchi T, Sugihara G, Okada T, Fujiwara T, Takahashi H. Factors affecting mental illness and social stress in hospital workers treating COVID-19: Paradoxical distress during pandemic era. J Psychiatr Res 2021; 137:298-302. [PMID: 33735720 PMCID: PMC7936542 DOI: 10.1016/j.jpsychires.2021.03.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/21/2021] [Accepted: 03/02/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND The coronavirus disease 2019 (COVID-19) has affected all countries in the world. Hospital workers are at high risk of mental illness, such as anxiety and depression. Furthermore, they also face many social stresses, such as deterioration of human relations and income reduction. Apart from mental illness, these social stresses can reduce motivation and lead to voluntary absenteeism, which contribute to a collapse of medical systems. Thus, for maintaining medical systems, it is crucial to clarify risk factors for both mental illness and increased social stress among hospital workers. However, little attention has been paid to factors affecting social stress, and thus, we aimed to address this gap. METHODS In this cross-sectional survey of 588 hospital workers, the levels of anxiety, depression, and social stress were assessed using the 7-item Generalized Anxiety Disorder scale (GAD-7), 9-item Patient Health Questionnaire (PHQ-9), and Tokyo Metropolitan Distress Scale for Pandemic (TMDP). Multiple regression analyses were conducted to identify the demographic variables affecting these problems. RESULTS Older age and female sex were common risk factors for anxiety, depression, and social stress. Moreover, occupational exposure to COVID-19 and hospital staff other than doctors/fewer non-work days were risk factors for increased anxiety and depression, respectively. Furthermore, living with families/others was a risk factor for increased social stress during this pandemic. CONCLUSION Our findings could be useful for developing policies and practices to minimize the risk of mental illness and increased social stress among hospital workers, highlighting that attention should be paid to social factors, such as an individual's household situation.
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Affiliation(s)
- Yukiko Matsumoto
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Junya Fujino
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Miho Miyajima
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Satomi Doi
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Nobuhide Hirai
- Health Administration Center, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Daisuke Jitoku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Shunsuke Takagi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takehiro Tamura
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takashi Maruo
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Yuki Shidei
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Nanase Kobayashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Masanori Ichihashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Shiori Noguchi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Kanako Oohashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takashi Takeuchi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Genichi Sugihara
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takayuki Okada
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takeo Fujiwara
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
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10
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Shiwaku H, Doi S, Miyajima M, Matsumoto Y, Fujino J, Hirai N, Jitoku D, Takagi S, Tamura T, Maruo T, Shidei Y, Kobayashi N, Ichihashi M, Noguchi S, Oohashi K, Takeuchi T, Sugihara G, Okada T, Fujiwara T, Takahashi H. Novel brief screening scale, Tokyo Metropolitan Distress Scale for Pandemic (TMDP), for assessing mental and social stress of medical personnel in COVID-19 pandemic. Psychiatry Clin Neurosci 2021; 75:24-25. [PMID: 33225480 PMCID: PMC7753715 DOI: 10.1111/pcn.13168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/03/2020] [Accepted: 10/15/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Satomi Doi
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Miho Miyajima
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Yukiko Matsumoto
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Junya Fujino
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Nobuhide Hirai
- Health Administration Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daisuke Jitoku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Shunsuke Takagi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takehiro Tamura
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takashi Maruo
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Yuki Shidei
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Nanase Kobayashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Masanori Ichihashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Shiori Noguchi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Kanako Oohashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takashi Takeuchi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Genichi Sugihara
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takayuki Okada
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Takeo Fujiwara
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
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11
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Shiwaku H, Nakano Y, Kato M, Takahashi H. Detection of autoantibodies against GABA ARα1 in patients with schizophrenia. Schizophr Res 2020; 216:543-546. [PMID: 31806526 DOI: 10.1016/j.schres.2019.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/01/2019] [Accepted: 10/06/2019] [Indexed: 11/30/2022]
Abstract
Recent studies have identified autoantibodies against synaptic molecules in patients with encephalitis. Autoantibodies against the N-Methyl-d-Aspartate receptor have been reported in patients with schizophrenia; however, autoantibodies against other molecules are yet to be identified. This study used a cell-based assay to examine serum samples from individuals with schizophrenia and healthy controls. The results showed that 5 (8.6%) of 57 patients with schizophrenia harbor autoantibodies against the α1 subunit of the γ-aminobutyric acid A receptor (GABAARα1), which are currently not know to be linked to the pathology of this disease. Some patients showed markedly high antibody titers (i.e., 1:10,000-100,000). None of the heathy control subjects were positive for GABAARα1 antibodies. Therefore, these autoantibodies may form the basis of GABA-mediated pathology in a subgroup of patients with schizophrenia.
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Affiliation(s)
- Hiroki Shiwaku
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
| | - Yuri Nakano
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Maiko Kato
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
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12
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Tamura T, Shiwaku H, Jitoku D, Kurumaji A. Effect of Tandospirone, a Partial Agonist of the 5-HT1A Receptor, in a Patient With Chronic Poststroke Emotional Incontinence With Anxiousness. Prim Care Companion CNS Disord 2019; 21. [DOI: 10.4088/pcc.18l02403] [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: 10/26/2022] Open
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13
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Kobayashi T, Akutsu K, Nakase M, Suzuki S, Shiwaku H, Yaita T. Complexation properties and structural character of lanthanides complexes of O,N-hetero donor ligand BIZA. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1575880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- T. Kobayashi
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - K. Akutsu
- Research Center for Neutron Science and Technology, Comprehensive Research Organization for Science and Society, Tokai, Ibaraki, Japan
| | - M. Nakase
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
| | - S. Suzuki
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - H. Shiwaku
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - T. Yaita
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo-cho, Sayo-gun, Hyogo, Japan
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14
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Fujita K, Mao Y, Uchida S, Chen X, Shiwaku H, Tamura T, Ito H, Watase K, Homma H, Tagawa K, Sudol M, Okazawa H. Developmental YAPdeltaC determines adult pathology in a model of spinocerebellar ataxia type 1. Nat Commun 2017; 8:1864. [PMID: 29192206 PMCID: PMC5709507 DOI: 10.1038/s41467-017-01790-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 04/04/2017] [Accepted: 10/16/2017] [Indexed: 12/13/2022] Open
Abstract
YAP and its neuronal isoform YAPdeltaC are implicated in various cellular functions. We found that expression of YAPdeltaC during development, but not adulthood, rescued neurodegeneration phenotypes of mutant ataxin-1 knock-in (Atxn1-KI) mice. YAP/YAPdeltaC interacted with RORα via the second WW domain and served as co-activators of its transcriptional activity. YAP/YAPdeltaC formed a transcriptional complex with RORα on cis-elements of target genes and regulated their expression. Both normal and mutant Atxn1 interacted with YAP/YAPdeltaC, but only mutant Atxn1 depleted YAP/YAPdeltaC from the RORα complex to suppress transcription on short timescales. Over longer periods, mutant Atxn1 also decreased RORα in vivo. Genetic supplementation of YAPdeltaC restored the RORα and YAP/YAPdeltaC levels, recovered YAP/YAPdeltaC in the RORα complex and normalized target gene transcription in Atxn1-KI mice in vivo. Collectively, our data suggest that functional impairment of YAP/YAPdeltaC by mutant Atxn1 during development determines the adult pathology of SCA1 by suppressing RORα-mediated transcription.
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Affiliation(s)
- Kyota Fujita
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Ying Mao
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Shigenori Uchida
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Xigui Chen
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hiroki Shiwaku
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Takuya Tamura
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hikaru Ito
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kei Watase
- Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hidenori Homma
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kazuhiko Tagawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Marius Sudol
- Mechanobiology Institute, National University of Singapore, 5A Engineering Drive 1, Singapore, 117411, Singapore.,Department of Physiology, National University of Singapore, Yong Loo Li School of Medicine, 2 Medical Drive, Singapore, 117597, Singapore.,Institute of Molecular and Cell Biology (IMCB) A*STAR, Biopolis, Singapore, 138673, Singapore
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan. .,Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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15
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Shiwaku H, Okazawa H. Impaired DNA damage repair as a common feature of neurodegenerative diseases and psychiatric disorders. Curr Mol Med 2015; 15:119-28. [PMID: 25732151 DOI: 10.2174/1566524015666150303002556] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 12/20/2014] [Accepted: 01/18/2015] [Indexed: 11/22/2022]
Abstract
Impaired DNA damage repair is a common pathological endophenotype of some types of neurodegenerative diseases, intellectual disabilities, and psychiatric diseases. Dysfunctional DNA repair and DNA damage, including DNA double-stranded breaks, are linked to transcriptional dysfunction and abnormal DNA methylation. Impaired DNA repair in neural stem cells leads to microcephaly or cerebellar ataxia. Furthermore, DNA repair defects and DNA damage in mature neurons lead to progressive cognitive impairment, which might be a common feature of Alzheimer's disease, Huntington's disease, and other polyglutamine diseases. Oxidative DNA damage and altered DNA repair gene expression are observed in GABAergic neurons in schizophrenia. These findings indicate that impaired DNA repair is a common pathological endophenotype of neurological diseases, and that DNA damage might lead to diverse disease symptoms dependent on timing and the affected cell type.
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Affiliation(s)
| | - H Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan.
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16
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Shiwaku H, Masaki H, Yasugi D, Narushima K. A Case of a Depressed Patient With Major Titanium Cranial Base Reconstruction Successfully Treated by ECT. Am J Psychiatry 2015; 172:1024-5. [PMID: 26423486 DOI: 10.1176/appi.ajp.2015.14121539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroki Shiwaku
- From the Department of Psychiatry, Tokyo Metropolitan Tama Medical Center, Fuchū, Tokyo
| | - Hidekazu Masaki
- From the Department of Psychiatry, Tokyo Metropolitan Tama Medical Center, Fuchū, Tokyo
| | - Daisuke Yasugi
- From the Department of Psychiatry, Tokyo Metropolitan Tama Medical Center, Fuchū, Tokyo
| | - Kenji Narushima
- From the Department of Psychiatry, Tokyo Metropolitan Tama Medical Center, Fuchū, Tokyo
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17
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Nakase M, Takeshita K, Kobayashi T, Shiwaku H, Yaita T. Structure and complexation studies on 2,2′-bipyridyl and trivalent lanthanides. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1038393] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Ito H, Shiwaku H, Yoshida C, Homma H, Luo H, Chen X, Fujita K, Musante L, Fischer U, Frints SGM, Romano C, Ikeuchi Y, Shimamura T, Imoto S, Miyano S, Muramatsu SI, Kawauchi T, Hoshino M, Sudol M, Arumughan A, Wanker EE, Rich T, Schwartz C, Matsuzaki F, Bonni A, Kalscheuer VM, Okazawa H. In utero gene therapy rescues microcephaly caused by Pqbp1-hypofunction in neural stem progenitor cells. Mol Psychiatry 2015; 20:459-71. [PMID: 25070536 PMCID: PMC4378255 DOI: 10.1038/mp.2014.69] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 04/10/2014] [Accepted: 05/12/2014] [Indexed: 12/21/2022]
Abstract
Human mutations in PQBP1, a molecule involved in transcription and splicing, result in a reduced but architecturally normal brain. Examination of a conditional Pqbp1-knockout (cKO) mouse with microcephaly failed to reveal either abnormal centrosomes or mitotic spindles, increased neurogenesis from the neural stem progenitor cell (NSPC) pool or increased cell death in vivo. Instead, we observed an increase in the length of the cell cycle, particularly for the M phase in NSPCs. Corresponding to the developmental expression of Pqbp1, the stem cell pool in vivo was decreased at E10 and remained at a low level during neurogenesis (E15) in Pqbp1-cKO mice. The expression profiles of NSPCs derived from the cKO mouse revealed significant changes in gene groups that control the M phase, including anaphase-promoting complex genes, via aberrant transcription and RNA splicing. Exogenous Apc4, a hub protein in the network of affected genes, recovered the cell cycle, proliferation, and cell phenotypes of NSPCs caused by Pqbp1-cKO. These data reveal a mechanism of brain size control based on the simple reduction of the NSPC pool by cell cycle time elongation. Finally, we demonstrated that in utero gene therapy for Pqbp1-cKO mice by intraperitoneal injection of the PQBP1-AAV vector at E10 successfully rescued microcephaly with preserved cortical structures and improved behavioral abnormalities in Pqbp1-cKO mice, opening a new strategy for treating this intractable developmental disorder.
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Affiliation(s)
- H Ito
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Shiwaku
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - C Yoshida
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Homma
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Luo
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - X Chen
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Fujita
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan
| | - L Musante
- Department of Human Molecular Genetics, Max-Planck Institute for Molecular Genetics, Berlin-Dahlem, Germany
| | - U Fischer
- Department of Human Molecular Genetics, Max-Planck Institute for Molecular Genetics, Berlin-Dahlem, Germany
| | - S G M Frints
- Department of Clinical Genetics, University Hospital azM Maastricht, Maastricht, The Netherlands,School for Oncology and Developmental Biology, GROW, Maastricht University, Maastricht, The Netherlands
| | - C Romano
- Unità Operativa Complessa di Pediatria e Genetica Medica, IRCCS Associazione Oasi Maria Santissima, Troina (Enna), Italy
| | - Y Ikeuchi
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St Louis, MO, USA,Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - T Shimamura
- Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Imoto
- Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Miyano
- Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S-i Muramatsu
- Department of Neurology, Jichi Medical University, Tochigi, Japan
| | - T Kawauchi
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - M Hoshino
- Department of Biochemistry and Cellular Biology, National Center for Neurology and Psychiatry, Tokyo, Japan
| | - M Sudol
- Laboratory of Signal Transduction and Proteomic Profiling, Weis Center for Research, Geisinger Clinic, Danville, PA, USA
| | - A Arumughan
- Department of Neurogenetics, Max-Delbrück Center for Molecular Medicine, Berlin-Buch, Germany
| | - E E Wanker
- Department of Neurogenetics, Max-Delbrück Center for Molecular Medicine, Berlin-Buch, Germany
| | - T Rich
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK
| | - C Schwartz
- JC Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, SC, USA
| | - F Matsuzaki
- Laboratory for Cell Asymmetry, Center for Developmental Biology, RIKEN, Chuo-ku, Kobe, Japan
| | - A Bonni
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St Louis, MO, USA,Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - V M Kalscheuer
- Department of Human Molecular Genetics, Max-Planck Institute for Molecular Genetics, Berlin-Dahlem, Germany
| | - H Okazawa
- Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, Tokyo, Japan,Department of Neuropathology, Medical Research Institute and Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. E-mail:
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19
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Abstract
The local structure of molten CdCl2 was investigated by X-ray absorption fine structure (XAFS) and X-ray diffraction(XRD) analyses. The nearest Cd2+-Cl− distance decreases from 2.61 Å in the room temperature solid state to 2.47 - 2.50 Å in the molten state. The coordination number decreases from 6 in the solid to 4 in the melt. The obtained structural parameters from the XAFS and the XRD analyses suggest that a tetrahedral coordination (CdCl4)2− is predominant in molten CdCl2. The XAFS result of a molten 50%CdCl2-KCl mixture shows that the 4-fold (CdCl4)2− structure holds also in the mixture
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Affiliation(s)
- Y. Okamoto
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - H. Shiwaku
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - T. Yaita
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Syncrotron Radiation Research Center, Japan Atomic Energy Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795143 Japan
| | - S. Suzuki
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - K. Minato
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - H. Tanida
- Japan Synchrotron Radiation Research Institute, Kouto, Mikazuki-cho, Sayo-gun, Hyogo-ken 6795198 Japan
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21
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Barclay SS, Tamura T, Ito H, Fujita K, Tagawa K, Shimamura T, Katsuta A, Shiwaku H, Sone M, Imoto S, Miyano S, Okazawa H. Systems biology analysis of Drosophila in vivo screen data elucidates core networks for DNA damage repair in SCA1. Hum Mol Genet 2013; 23:1345-64. [DOI: 10.1093/hmg/ddt524] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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22
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Takeno S, Takahashi Y, Hashimoto T, Maki K, Shibata R, Yamana I, Sasaki T, Yoshida Y, Shiwaku H, Yamashita K, Aisu N, Yamashita Y, Moroga T, Ono K, Kawahara K. Is the prognostic impact of tumor location in patients with surgically resected esophageal squamous cell carcinoma affected by surgical approach? ACTA ACUST UNITED AC 2013; 51:91-8. [PMID: 24157453 DOI: 10.1159/000355680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 09/17/2013] [Indexed: 11/19/2022]
Abstract
AIM The aim of the present study was to clarify differences in node metastasis mode and clinical outcomes based on tumor location in patients with esophageal squamous cell carcinoma (ESCC). PATIENTS AND METHODS Participants comprised 228 patients with ESCC who underwent radical esophagectomy without preoperative supplement therapies. Lymph nodes were harvested from three fields: the neck, thorax, and abdomen. Patients were divided into three groups depending on tumor location [upper esophagus (UE), middle esophagus, or lower esophagus (LE)] and analyzed clinicopathologically. RESULTS The LE group showed significantly more progressive ESCC in terms of tumor invasion (p = 0.025), node metastasis (p = 0.0071), and TNM stage (p = 0.0043). The LE group revealed a tendency to metastasize to extrathoracic (especially abdominal) nodes (p = 0.0008). Recurrent laryngeal node metastasis was increased in the UE group (p = 0.016). However, no prognostic differences were detected between groups according to tumor location. Likewise, subgroup analyses by surgical approach (open thoracotomy vs. thoracoscopy) and cancer stage (stage I/II, III, and IV) did not reveal any significant prognostic impact of tumor location. CONCLUSION Lymphatic spread varied by tumor location, but no prognostic impact of tumor location could be detected in patients with ESCC in spite of surgical approach or cancer stage.
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Affiliation(s)
- S Takeno
- Gastroenterological Surgery, Fukuoka University Faculty of Medicine, Fukuoka, Japan
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Li C, Ito H, Fujita K, Shiwaku H, Qi Y, Tagawa K, Tamura T, Okazawa H. Sox2 transcriptionally regulates PQBP1, an intellectual disability-microcephaly causative gene, in neural stem progenitor cells. PLoS One 2013; 8:e68627. [PMID: 23874697 PMCID: PMC3713010 DOI: 10.1371/journal.pone.0068627] [Citation(s) in RCA: 12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 05/30/2013] [Indexed: 12/21/2022] Open
Abstract
PQBP1 is a nuclear-cytoplasmic shuttling protein that is engaged in RNA metabolism and transcription. In mouse embryonic brain, our previous in situ hybridization study revealed that PQBP1 mRNA was dominantly expressed in the periventricular zone region where neural stem progenitor cells (NSPCs) are located. Because the expression patterns in NSPCs are related to the symptoms of intellectual disability and microcephaly in PQBP1 gene-mutated patients, we investigated the transcriptional regulation of PQBP1 by NSPC-specific transcription factors. We selected 132 genome sequences that matched the consensus sequence for the binding of Sox2 and POU transcription factors upstream and downstream of the mouse PQBP1 gene. We then screened the binding affinity of these sequences to Sox2-Pax6 or Sox2-Brn2 with gel mobility shift assays and found 18 genome sequences that interacted with the NSPC-specific transcription factors. Some of these sequences had cis-regulatory activities in Luciferase assays and in utero electroporation into NSPCs. Furthermore we found decreased levels of expression of PQBP1 protein in NSPCs of heterozygous Sox2-knockout mice in vivo by immunohistochemistry and western blot analysis. Collectively, these results indicated that Sox2 regulated the transcription of PQBP1 in NSPCs.
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Affiliation(s)
- Chan Li
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hikaru Ito
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Kyota Fujita
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hiroki Shiwaku
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yunlong Qi
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Kazuhiko Tagawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Takuya Tamura
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
- Center for Brain Integration Research, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
- * E-mail:
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Nakamura Y, Tagawa K, Oka T, Sasabe T, Ito H, Shiwaku H, La Spada AR, Okazawa H. Ataxin-7 associates with microtubules and stabilizes the cytoskeletal network. Hum Mol Genet 2011; 21:1099-110. [PMID: 22100762 DOI: 10.1093/hmg/ddr539] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The spinocerebellar ataxia type 7 (SCA7) gene product, Ataxin-7 (ATXN7), localizes to the nucleus and has been shown to function as a component of the TATA-binding protein-free TAF-containing-SPT3-TAF9-GCN5-acetyltransferase transcription complex, although cytoplasmic localization of ATXN7 in affected neurons of human SCA7 patients has also been detected. Here, we define a physiological function for cytoplasmic ATXN7. Live imaging reveals that the intracellular distribution of ATXN7 dynamically changes and that ATXN7 distribution frequently shifts from the nucleus to the cytoplasm. Immunocytochemistry and immunoprecipitation demonstrate that cytoplasmic ATXN7 associates with microtubules (MTs), and expression of ATXN7 stabilizes MTs against nocodazole treatment, while ATXN7 knockdown enhances MT degradation. Interestingly, normal and mutant ATXN7 similarly associate with and equally stabilize MTs. Taken together, these findings provide a novel physiological function of ATXN7 in the regulation of cytoskeletal dynamics, and suggest that abnormal cytoskeletal regulation may contribute to SCA7 disease pathology.
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Affiliation(s)
- Yoko Nakamura
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
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Shiwaku H, Kudo S, Ikehara N, Ohtsuka K, Ogata N, Wakamura K, Yamamura F, Inoue H, Hamatani S. Use of endocytoscopy in the diagnosis of a rare, depressed-type ileal adenoma. Endoscopy 2011; 42 Suppl 2:E326-7. [PMID: 21170831 DOI: 10.1055/s-0030-1255890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- H Shiwaku
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
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Yoshida Y, Hoshino S, Shiwaku H, Beppu R, Tanimura S, Tanaka S, Yamashita Y. Dexamethasone as a means for controlling vascular pain caused by the administration of oxaliplatin via the peripheral vein during XELOX therapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14142] [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: 11/20/2022] Open
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Kobayashi T, Yaita T, Suzuki S, Shiwaku H, Okamoto Y, Akutsu K, Nakano Y, Fujii Y. Effect of the Introduction of Amide Oxygen into 1,10-Phenanthroline on the Extraction and Complexation of Trivalent Lanthanide in Acidic Condition. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496395.2010.510094] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Enokido Y, Tamura T, Ito H, Arumughan A, Komuro A, Shiwaku H, Sone M, Foulle R, Sawada H, Ishiguro H, Ono T, Murata M, Kanazawa I, Tomilin N, Tagawa K, Wanker EE, Okazawa H. Mutant huntingtin impairs Ku70-mediated DNA repair. ACTA ACUST UNITED AC 2010; 189:425-43. [PMID: 20439996 PMCID: PMC2867301 DOI: 10.1083/jcb.200905138] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [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] [Indexed: 12/31/2022]
Abstract
Mutant huntingtin prevents interaction of the DNA damage repair complex component Ku70 with damaged DNA, blocking repair of double-strand breaks. DNA repair defends against naturally occurring or disease-associated DNA damage during the long lifespan of neurons and is implicated in polyglutamine disease pathology. In this study, we report that mutant huntingtin (Htt) expression in neurons causes double-strand breaks (DSBs) of genomic DNA, and Htt further promotes DSBs by impairing DNA repair. We identify Ku70, a component of the DNA damage repair complex, as a mediator of the DNA repair dysfunction in mutant Htt–expressing neurons. Mutant Htt interacts with Ku70, impairs DNA-dependent protein kinase function in nonhomologous end joining, and consequently increases DSB accumulation. Expression of exogenous Ku70 rescues abnormal behavior and pathological phenotypes in the R6/2 mouse model of Huntington’s disease (HD). These results collectively suggest that Ku70 is a critical regulator of DNA damage in HD pathology.
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Affiliation(s)
- Yasushi Enokido
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Enokido Y, Tamura T, Ito H, Arumughan A, Komuro A, Shiwaku H, Sone M, Foulle R, Sawada H, Ishiguro H, Ono T, Murata M, Kanazawa I, Tomilin N, Tagawa K, Wanker EE, Okazawa H. Mutant huntingtin impairs Ku70-mediated DNA repair. J Exp Med 2010. [DOI: 10.1084/jem2075oia16] [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: 11/04/2022] Open
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30
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Enokido Y, Tamura T, Ito H, Komuro A, Shiwaku H, Wanker EE, Okazawa H. Mutant Huntingtin impairs Ku70-mediated DNA repair. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Sone M, Uchida A, Komatsu A, Suzuki E, Ibuki I, Asada M, Shiwaku H, Tamura T, Hoshino M, Okazawa H, Nabeshima YI. Loss of yata, a novel gene regulating the subcellular localization of APPL, induces deterioration of neural tissues and lifespan shortening. PLoS One 2009; 4:e4466. [PMID: 19209226 PMCID: PMC2635962 DOI: 10.1371/journal.pone.0004466] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Accepted: 01/02/2009] [Indexed: 11/24/2022] Open
Abstract
Background The subcellular localization of membrane and secreted proteins is finely and dynamically regulated through intracellular vesicular trafficking for permitting various biological processes. Drosophila Amyloid precursor protein like (APPL) and Hikaru genki (HIG) are examples of proteins that show differential subcellular localization among several developmental stages. Methodology/Principal Findings During the study of the localization mechanisms of APPL and HIG, we isolated a novel mutant of the gene, CG1973, which we named yata. This molecule interacted genetically with Appl and is structurally similar to mouse NTKL/SCYL1, whose mutation was reported to cause neurodegeneration. yata null mutants showed phenotypes that included developmental abnormalities, progressive eye vacuolization, brain volume reduction, and lifespan shortening. Exogenous expression of Appl or hig in neurons partially rescued the mutant phenotypes of yata. Conversely, the phenotypes were exacerbated in double null mutants for yata and Appl. We also examined the subcellular localization of endogenous APPL and exogenously pulse-induced APPL tagged with FLAG by immunostaining the pupal brain and larval motor neurons in yata mutants. Our data revealed that yata mutants showed impaired subcellular localization of APPL. Finally, yata mutant pupal brains occasionally showed aberrant accumulation of Sec23p, a component of the COPII coat of secretory vesicles traveling from the endoplasmic reticulum (ER) to the Golgi. Conclusion/Significance We identified a novel gene, yata, which is essential for the normal development and survival of tissues. Loss of yata resulted in the progressive deterioration of the nervous system and premature lethality. Our genetic data showed a functional relationship between yata and Appl. As a candidate mechanism of the abnormalities, we found that yata regulates the subcellular localization of APPL and possibly other proteins.
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Affiliation(s)
- Masaki Sone
- Medical Top Track Program, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.
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Takahashi K, Yoshina S, Masashi M, Ito W, Inoue T, Shiwaku H, Arai H, Mitani S, Okazawa H. Nematode homologue of PQBP1, a mental retardation causative gene, is involved in lipid metabolism. PLoS One 2009; 4:e4104. [PMID: 19119319 PMCID: PMC2606030 DOI: 10.1371/journal.pone.0004104] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Accepted: 12/03/2008] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND PQBP1 is a causative gene for X-linked mental retardation (MR) whose patients frequently show lean body. C. elegans has a strictly conserved homologue gene of PQBP1, T21D12.3. METHODOLOGY AND PRINCIPAL FINDINGS We generated Venus-transgenic and T21D12.3-mutant nematodes to analyze developmental expression patterns and in vivo functions of the nematode PQBP1 homologue protein (pqbp-1.1). During development, pqbp-1.1 is expressed from cell proliferation stage to larva stage. In larva, intestinal cells show the highest expression of pqbp-1.1, while it decreases in adult worms. The mutants of pqbp-1.1 show a decrease of the lipid content in intestinal cells. Especially, incorporation of fatty acid into triglyceride is impaired. ShRNA-mediated repression of PQBP1 also leads to reduction of lipid content in mammalian primary white adipocytes. CONCLUSION/ SIGNIFICANCE: These results suggest that pqbp-1.1 is involved in lipid metabolism of intestinal cells. Dysfunction of lipid metabolism might underlie lean body, one of the most frequent symptoms associating with PQBP1-linked MR patients.
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Affiliation(s)
- Keiko Takahashi
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Sawako Yoshina
- Department of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Maekawa Masashi
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Wakana Ito
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takao Inoue
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroki Shiwaku
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyuki Arai
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Shohei Mitani
- Department of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Hitoshi Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail:
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Shobu T, Tozawa K, Shiwaku H, Konishi H, Inami T, Harami T, Mizuki J. Wide Band Energy Beamline using Si (111) Crystal Monochromators at BL22XU in SPring-8. ACTA ACUST UNITED AC 2007. [DOI: 10.1063/1.2436207] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Mori K, Sekine N, Sato H, Shimao D, Shiwaku H, Hyodo K, Sugiyama H, Ando M, Ohashi K, Koyama M, Nakajima Y. Application of synchrotron X-ray imaging to phase objects in orthopedics. J Synchrotron Radiat 2002; 9:143-147. [PMID: 11972368 DOI: 10.1107/s0909049502004624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2001] [Accepted: 03/11/2002] [Indexed: 05/23/2023]
Abstract
Novel imaging of the fine structures of the ribs of a pig and a specimen of human osteosarcoma utilizing the spatial coherence of X-rays was successfully performed with an incident X-ray energy of 30 keV at SPring-8, Japan. The image contrast appearing at the periphery of trabecular bone, small calcifications and small fractures is caused by the phase shift of the X-rays at the boundary of these objects that have different X-ray refractive indices. The image is recorded on mammography film without an intensifying screen. Comparison of the image contrast using different sample-to-film distances, Z, such as Z = 5 m and Z approximately 0 m, showed that the former images were always more informative, i.e. better in resolution and/or image contrast when imaging trabecular bone, bone marrow and small fractures in compact bone, and for imaging cartilage. Radiography using synchrotron X-rays for phase objects should be a powerful tool for diagnosis in orthopedics, especially for bone disease.
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Affiliation(s)
- K Mori
- Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami 4669-2, Inashiki, Ibaraki 300-0394, Japan.
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Okamoto Y, Akabori M, Motohashi H, Shiwaku H, Ogawa T. X-ray absorption study of molten yttrium trihalides. J Synchrotron Radiat 2001; 8:1191-1199. [PMID: 11679771 DOI: 10.1107/s0909049501015059] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2001] [Accepted: 09/13/2001] [Indexed: 05/23/2023]
Abstract
The local structure and structural changes in molten YCl3-LiCl-KCl and molten YBr3-LiBr systems have been investigated by using a high-temperature extended X-ray absorption fine structure (EXAFS) technique. The behaviour of octahedral coordination of the halide ion (Cl(-) and Br(-)) around the Y(3+) ion has been studied by EXAFS of the Y K-absorption edge. The nearest Y(3+)-Cl(-) and Y(3+)-Br(-) distances and coordination numbers of halide ions around the Y(3+) ion do not change by mixing with the alkali halides. The stabilization of the (YCl6)(3-) and (YBr6)(3-) octahedral coordination by adding alkali halides was suggested by decreasing the Debye-Waller factor and the anharmonicity in the nearest Y(3+)-Cl(-) and Y(3+)-Br(-) interactions. The bridging structure of the (YBr6)(3-) octahedra sharing a Br(-) ion in the molten YBr3-LiBr system was studied by EXAFS of the Br K-absorption edge. The coordination number of Y(3+) around the Br(-) ion decreases from 2 in the pure melt to almost 1 in the 30mol% and 15mol% YBr3 melts. This suggests that the bridging is almost broken and the stable octahedron exists freely in the LiBr-rich melts.
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Affiliation(s)
- Y Okamoto
- Department of Materials Science, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
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Miyazawa M, Tabata N, Fujisawa R, Hashimoto K, Shiwaku H, Takei YA. Roles of endogenous retroviruses and platelets in the development of vascular injury in spontaneous mouse models of autoimmune diseases. Int J Cardiol 2000; 75 Suppl 1:S65-73; discussion S75-6. [PMID: 10980339 DOI: 10.1016/s0167-5273(00)00193-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
MRL/MpJ-lpr/lpr (MRL/lpr) mice spontaneously develop immune complex-mediated glomerulonephritis, granulomatous arteritis, and thrombocytopenia. Recent genetic analyses in a few different strains of lupus-prone mice have pointed out a close correlation between autoantibodies reactive with the endogenous retroviral env gene product, gp70, and the development and severity of glomerulonephritis. We have also shown that autoantibodies reactive with endogenous retroviral gp70 are closely correlated with the development of necrotizing polyarteritis in another lupus-prone strain of mice, SL/Ni. However, suggested pathogenicity of anti-gp70 autoantibodies has not yet been directly tested. To examine if anti-gp70 autoantibodies induce glomerular and vascular pathology, we established from unmanipulated MRL/lpr mice hybridoma clones that secrete monoclonal antibodies reactive with endogenous xenotropic viral env gene products. As reported separately, a high proportion of these anti-gp70 antibody-producing hybridoma clones induced in syngeneic non-autoimmune and severe combined immunodeficiency mice proliferative or wire loop-like glomerular lesions with granular deposits of gp70, IgG, and C3 in affected glomeruli. Some mice transplanted with these anti-gp70 autoantibody-producing hybridoma cells also showed massive subendothelial deposition of electron-dense materials in small arterioles in the kidneys. Furthermore, we identified an IgG2a-producing anti-gp70 hybridoma clone that induced microvascular intraluminal platelet aggregation, thrombocytopenia, and amenia upon transplantation into syngeneic non-autoimmune mice. This anti-gp70 autoantibody bound onto the surfaces of mouse platelets, and specifically precipitated a platelet protein with an approximate relative molecular mass of 40000. Attachment of activated platelets to the intimal surfaces of small arteries was also observed by electron microscopy in mice transplanted with the pathogenic anti-gp70 IgG2a-producing hybridoma cells, suggesting an interaction between antibody-bound platelets and endothelial cells.
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Affiliation(s)
- M Miyazawa
- Department of Immunology, Kinki University School of Medicine, Osaka-Sayama, 589-8511, Osaka, Japan.
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Ito MR, Terasaki S, Kondo E, Shiwaku H, Fukuoka Y, Nose M. Experimental lupus nephritis in severe combined immunodeficient (SCID) mice: remodelling of the glomerular lesions by bystander IgM antibodies. Clin Exp Immunol 2000; 119:340-5. [PMID: 10632673 PMCID: PMC1905503 DOI: 10.1046/j.1365-2249.2000.01133.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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: 11/20/2022] Open
Abstract
MRL/Mp-lpr/lpr (MRL/lpr) mice develop glomerular lesions with regular variations in their histopathological manifestations, similar to those in lupus nephritis. These lesions are mainly either cell-proliferative or wire loop-like and are associated with glomerular deposits of immunoglobulins, most frequently IgG and IgM. We previously established a nephritogenic IgG3-producing hybridoma clone, B1, from an MRL/lpr mouse, which induces only a 'wire loop-like' type of glomerular lesion when injected into SCID mice. Injection of SCID mice with an anti-trinitrophenyl IgM antibody-producing hybridoma clone, Sp6, following injection of the B1 clone, however, resulted in the development of a 'cell-proliferative' type of glomerular lesion, associated with an accumulation of both antibodies in glomeruli. This accumulation occurred even though Sp6 IgM antibodies did not react with B1 IgG3 antibodies and vice versa. A mutant clone of Sp6, T/13microE/3.1, which produces antibodies deficient in C1q binding, produced a similar effect as that of the Sp6 clone, i.e. 'cell-proliferative' lesions. Again the B1 antibodies did not react with T/13microE/3. 1-IgM antibodies and vice versa. We therefore conclude that bystander IgM antibodies contribute to the remodelling of glomerular lesions in situ, following glomerular injury by the nephritogenic antibodies.
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Affiliation(s)
- M R Ito
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
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Sakurai Y, Oura M, Takahashi S, Hayashi Y, Aoyagi H, Shiwaku H, Kudo T, Mochizuki T, Oikawa Y, Takahasi M, Yoshii K, Kitamura H. Present status and performance of SPring-8 front ends. J Synchrotron Radiat 1998; 5:1195-8. [PMID: 16687819 DOI: 10.1107/s0909049598002088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/1997] [Accepted: 02/02/1998] [Indexed: 05/09/2023]
Abstract
SPring-8 front ends have a novel structure which makes it easy to rearrange them and exchange the components. The structure has a common support for all the components except X-ray beam-position monitors and lead collimators. The alignment of the common support as well as the components was carried out with an accuracy of 0.25 mm in the vertical and horizontal directions. Replaceable pumping systems have also been placed on the common support and have achieved a vacuum of 2 x 10(-8) Pa at the upstream part of the front ends without synchrotron radiation. During the commissioning with synchrotron radiation, the pumping systems displayed good pumping-down characteristics. Commissioning has been successfully performed for four standard in-vacuum X-ray undulators and three bending-magnet-beamline front ends up to July 1997. Measurements of temperature rise show that absorber, pre-slits and XY slits can handle the anticipated maximum heat load at a ring current of 100 mA.
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Affiliation(s)
- Y Sakurai
- JAERI-RIKEN SPring-8 Project Team, Kamigori, Ako-gun, Hyogo 678-12, Japan
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Kudo T, Aoyagi H, Shiwaku H, Sakurai Y, Kitamura H. Electronics for SPring-8 X-ray beam monitors. J Synchrotron Radiat 1998; 5:630-631. [PMID: 15263601 DOI: 10.1107/s0909049597017329] [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] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 11/19/1997] [Indexed: 05/24/2023]
Abstract
A sensitive current-measuring system is required to construct a highly sensitive X-ray beam-position monitor (XBPM). A current-voltage converter (I/V) which can measure currents between 0.1 nA and 10 mA was designed, and the signal processing system of the XBPM was constucted using this I/V. This system was used in beamline commissioning. Beam-position data standard deviations of sigma approximately 3 micro m for the bending-magnet beamline, and sigma(x) approximately 3 micro m and sigma(y) approximately 1 micro m for the insertion-device beamline were obtained during the beamline commissioning.
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Affiliation(s)
- T Kudo
- SPring-8, Kamigori, Ako-gun, Hyogo 678-12, Japan
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Sakae H, Aoyagi H, Oura M, Kimura H, Ohata T, Shiwaku H, Yamamoto S, Sugiyama H, Tanabe K, Kobaski K, Kitamura H. Diamond beam-position monitor for undulator radiation and tests at the Tristan Super Light Facility. J Synchrotron Radiat 1997; 4:204-9. [PMID: 16699231 DOI: 10.1107/s090904959700561x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A photon beam-position monitor using a diamond foil as a position-sensitive device has been developed for use on insertion-device beamlines of third-generation synchrotron radiation facilities such as SPring-8, and was tested on the undulator beamline of the Tristan Super Light Facility at KEK. The beam test results show that the diamond monitor can be operated in a photoconductive mode like a semiconductor detector. It has a linear working range of about +/-1 mm and a position sensitivity of less than 3 mum. The stability of the monitor was confirmed by continuous operation under low photon beam intensity conditions.
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Abstract
hMSH2 is a homolog of bacterial mutS and yeast Msh2, a member of the group of mismatch repair genes whose products bind to mismatched regions of double-stranded DNA. We analyzed expression of hMSH2 in normal human organs by the polymerase chain reaction coupled with reverse transcription and found two novel types of alternatively spliced mRNAs that were expressed in normal human organs. One lacked exon 13, and the other lacked a portion from the second nucleotide of codon 633 to the second nucleotide of codon 719. In the latter transcript, intro 12 started with TA and ended with TT (TA-TT intron) which did not meet the GT-AG rule. Both types of transcript resulted in frameshifts which generated truncated hMSH2 proteins lacking the main part of the highly conserved region. The biological significance of the alternative splicing remains to be elucidated.
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Affiliation(s)
- Y Mori
- Department of Molecular Pathology, Tohoku University School of Medicine, Sendai, Japan
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