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Nakamura R, Tohnai G, Nakatochi M, Atsuta N, Watanabe H, Ito D, Katsuno M, Hirakawa A, Izumi Y, Morita M, Hirayama T, Kano O, Kanai K, Hattori N, Taniguchi A, Suzuki N, Aoki M, Iwata I, Yabe I, Shibuya K, Kuwabara S, Oda M, Hashimoto R, Aiba I, Ishihara T, Onodera O, Yamashita T, Abe K, Mizoguchi K, Shimizu T, Ikeda Y, Yokota T, Hasegawa K, Tanaka F, Nakashima K, Kaji R, Niwa JI, Doyu M, Terao C, Ikegawa S, Fujimori K, Nakamura S, Ozawa F, Morimoto S, Onodera K, Ito T, Okada Y, Okano H, Sobue G. Genetic factors affecting survival in Japanese patients with sporadic amyotrophic lateral sclerosis: a genome-wide association study and verification in iPSC-derived motor neurons from patients. J Neurol Neurosurg Psychiatry 2023; 94:816-824. [PMID: 37142397 DOI: 10.1136/jnnp-2022-330851] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/18/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND Several genetic factors are associated with the pathogenesis of sporadic amyotrophic lateral sclerosis (ALS) and its phenotypes, such as disease progression. Here, in this study, we aimed to identify the genes that affect the survival of patients with sporadic ALS. METHODS We enrolled 1076 Japanese patients with sporadic ALS with imputed genotype data of 7 908 526 variants. We used Cox proportional hazards regression analysis with an additive model adjusted for sex, age at onset and the first two principal components calculated from genotyped data to conduct a genome-wide association study. We further analysed messenger RNA (mRNA) and phenotype expression in motor neurons derived from induced pluripotent stem cells (iPSC-MNs) of patients with ALS. RESULTS Three novel loci were significantly associated with the survival of patients with sporadic ALS-FGF1 at 5q31.3 (rs11738209, HR=2.36 (95% CI, 1.77 to 3.15), p=4.85×10-9), THSD7A at 7p21.3 (rs2354952, 1.38 (95% CI, 1.24 to 1.55), p=1.61×10-8) and LRP1 at 12q13.3 (rs60565245, 2.18 (95% CI, 1.66 to 2.86), p=2.35×10-8). FGF1 and THSD7A variants were associated with decreased mRNA expression of each gene in iPSC-MNs and reduced in vitro survival of iPSC-MNs obtained from patients with ALS. The iPSC-MN in vitro survival was reduced when the expression of FGF1 and THSD7A was partially disrupted. The rs60565245 was not associated with LRP1 mRNA expression. CONCLUSIONS We identified three loci associated with the survival of patients with sporadic ALS, decreased mRNA expression of FGF1 and THSD7A and the viability of iPSC-MNs from patients. The iPSC-MN model reflects the association between patient prognosis and genotype and can contribute to target screening and validation for therapeutic intervention.
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Affiliation(s)
- Ryoichi Nakamura
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Genki Tohnai
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
- Division of ALS Research, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Masahiro Nakatochi
- Public Health Informatics Unit, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Naoki Atsuta
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Hirohisa Watanabe
- Department of Neurology, Fujita Health University, Toyoake, Aichi, Japan
- Brain and Mind Research Center, Nagoya University, Nagoya, Aichi, Japan
| | - Daisuke Ito
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
- Department of Clinical Research Education, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Akihiro Hirakawa
- Department of Clinical Biostatistics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yuishin Izumi
- Department of Neurology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Mitsuya Morita
- Division of Neurology, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Takehisa Hirayama
- Department of Neurology, Toho University Faculty of Medicine, Ota-ku, Tokyo, Japan
| | - Osamu Kano
- Department of Neurology, Toho University Faculty of Medicine, Ota-ku, Tokyo, Japan
| | - Kazuaki Kanai
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
- Department of Neurology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Akira Taniguchi
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Naoki Suzuki
- Department of Neurology, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Masashi Aoki
- Department of Neurology, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Ikuko Iwata
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Ichiro Yabe
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Kazumoto Shibuya
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Satoshi Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaya Oda
- Department of Neurology, Vihara Hananosato Hospital, Miyoshi, Hiroshima, Japan
| | - Rina Hashimoto
- Department of Neurology, National Hospital Organization Higashinagoya National Hospital, Nagoya, Aichi, Japan
| | - Ikuko Aiba
- Department of Neurology, National Hospital Organization Higashinagoya National Hospital, Nagoya, Aichi, Japan
| | - Tomohiko Ishihara
- Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Osamu Onodera
- Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Toru Yamashita
- Department of Neurology, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Koji Abe
- Department of Neurology, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Kouichi Mizoguchi
- Department of Neurology, National Hospital Organization Shizuoka Medical Center, Shizuoka, Japan
| | - Toshio Shimizu
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Yoshio Ikeda
- Department of Neurology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Takanori Yokota
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Kazuko Hasegawa
- Division of Neurology, National Hospital Organization, Sagamihara National Hospital, Sagamihara, Kanagawa, Japan
| | - Fumiaki Tanaka
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kenji Nakashima
- Department of Neurology, National Hospital Organization, Matsue Medical Center, Matsue, Shimane, Japan
| | - Ryuji Kaji
- Department of Neurology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Jun-Ichi Niwa
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Manabu Doyu
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Chikashi Terao
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Koki Fujimori
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Shiho Nakamura
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Fumiko Ozawa
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Satoru Morimoto
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kazunari Onodera
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Takuji Ito
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Yohei Okada
- Department of Neurology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Gen Sobue
- Brain and Mind Research Center, Nagoya University, Nagoya, Aichi, Japan
- Aichi Medical University, Nagakute, Aichi, Japan
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Rashid MI, Ito T, Miya F, Shimojo D, Arimoto K, Onodera K, Okada R, Nagashima T, Yamamoto K, Khatun Z, Shimul RI, Niwa JI, Katsuno M, Sobue G, Okano H, Sakurai H, Shimizu K, Doyu M, Okada Y. Simple and efficient differentiation of human iPSCs into contractible skeletal muscles for muscular disease modeling. Sci Rep 2023; 13:8146. [PMID: 37231024 DOI: 10.1038/s41598-023-34445-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/30/2023] [Indexed: 05/27/2023] Open
Abstract
Pathophysiological analysis and drug discovery targeting human diseases require disease models that suitably recapitulate patient pathology. Disease-specific human induced pluripotent stem cells (hiPSCs) differentiated into affected cell types can potentially recapitulate disease pathology more accurately than existing disease models. Such successful modeling of muscular diseases requires efficient differentiation of hiPSCs into skeletal muscles. hiPSCs transduced with doxycycline-inducible MYOD1 (MYOD1-hiPSCs) have been widely used; however, they require time- and labor-consuming clonal selection, and clonal variations must be overcome. Moreover, their functionality should be carefully examined. Here, we demonstrated that bulk MYOD1-hiPSCs established with puromycin selection rather than G418 selection showed rapid and highly efficient differentiation. Interestingly, bulk MYOD1-hiPSCs exhibited average differentiation properties of clonally established MYOD1-hiPSCs, suggesting that it is possible to minimize clonal variations. Moreover, disease-specific hiPSCs of spinal bulbar muscular atrophy (SBMA) could be efficiently differentiated via this method into skeletal muscle that showed disease phenotypes, suggesting the applicability of this method for disease analysis. Finally, three-dimensional muscle tissues were fabricated from bulk MYOD1-hiPSCs, which exhibited contractile force upon electrical stimulation, indicating their functionality. Thus, our bulk differentiation requires less time and labor than existing methods, efficiently generates contractible skeletal muscles, and may facilitate the generation of muscular disease models.
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Affiliation(s)
- Muhammad Irfanur Rashid
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Takuji Ito
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Fuyuki Miya
- Center for Medical Genetics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Daisuke Shimojo
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kanae Arimoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Kazunari Onodera
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Aichi, 466-8650, Japan
| | - Rina Okada
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Takunori Nagashima
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Kazuki Yamamoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Zohora Khatun
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Rayhanul Islam Shimul
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Jun-Ichi Niwa
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Aichi, 466-8650, Japan
- Department of Clinical Research Education, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Aichi, 466-8650, Japan
| | - Gen Sobue
- Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hidetoshi Sakurai
- Department of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kazunori Shimizu
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Manabu Doyu
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Yohei Okada
- Department of Neural iPSC Research, Institute for Medical Science of Aging, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
- Department of Neurology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
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Kimura M, Niwa JI, Ito H, Matsuyama K, Doyu M. Multiple cerebral infarctions due to calcified amorphous tumor growing rapidly from an antecedent infection and decreasing rapidly by detachment of fibrin and antithrombotic drugs: a case report. BMC Neurol 2022; 22:391. [PMID: 36273125 PMCID: PMC9587607 DOI: 10.1186/s12883-022-02918-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 10/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Calcified amorphous tumor (CAT) of the heart is a rare non-neoplastic intracardiac mass, a calcium deposition surrounded by amorphous fibrous tissue, and possibly causes cerebral embolism. Even rarer is CAT associated with infection, and no CAT with antecedent infection has been reported to our knowledge. In addition, although some CAT in patients on hemodialysis has been reported to grow rapidly, no case has been reported on CAT that grew and diminished rapidly in a short period of time. Here, we report the case of an 82-year-old Japanese woman with normal renal function who developed multiple cerebral infarctions due to CAT that grew rapidly, associated with inflammation from an antecedent infection, and diminished rapidly by detachment of fibrin on the mass surface and antithrombotic drugs. CASE PRESENTATION The patient developed fever after dental treatment and found musical hallucination on the left ear worsened in degree and frequency. In a nearby clinic, she was treated with antibiotics, and her body temperature turned to normal in approximately 1 month. She presented to our hospital for workup on the worsened musical hallucination. Magnetic resonance imaging (MRI) showed multiple cerebral infarctions, and transthoracic echocardiography (TTE) revealed an immobile hyperechoic mass with an acoustic shadow arising from a posterior cusp of the mitral valve. CAT was suspected and treated with apixaban and aspirin. Follow-up MRI and TTE showed newly developed multiple cerebral infarctions and rapidly diminished CAT. Cardiac surgery was performed to resect the CAT. The pathological findings showed calcifications surrounded by amorphous fibrous tissue including fibrin, indicating CAT. The patient's symptoms improved and no cerebral infarctions recurred in 4 months follow-up. CONCLUSION Inflammation from an antecedent infection can cause CAT to grow rapidly. Fibrous tissue including fibrin may attach to the surface of CAT, resulting in multiple cerebral infarctions. Fibrous tissue may detach and disappear by antithrombotic drugs, leading to a rapid diminishment of CAT in size.
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Affiliation(s)
- Motoya Kimura
- Department of Neurology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute-City, Aichi, 480-1195, Japan
| | - Jun-Ichi Niwa
- Department of Neurology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute-City, Aichi, 480-1195, Japan.
| | - Hideaki Ito
- Department of Pathology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute-City, Aichi, 480-1195, Japan
| | - Katsuhiko Matsuyama
- Department of Cardiovascular Surgery, Aichi Medical University, 1-1 Yazakokarimata, Nagakute-City, Aichi, 480-1195, Japan
| | - Manabu Doyu
- Department of Neurology, Aichi Medical University, 1-1 Yazakokarimata, Nagakute-City, Aichi, 480-1195, Japan
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Kimura M, Azuma Y, Taguchi S, Takagi M, Mori H, Shimomura Y, Niwa JI, Doyu M, Okumura A. Subcortical infarction in a young adult with Hunter syndrome. Brain Dev 2022; 44:343-346. [PMID: 35125232 DOI: 10.1016/j.braindev.2022.01.003] [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] [Received: 09/20/2021] [Revised: 12/16/2021] [Accepted: 01/16/2022] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Hunter syndrome (mucopolysaccharidosis type II, MPS II) is an X-linked lysosomal storage disease caused by deficiency of iduronate-2-sulfatase. Recently, stroke caused by embolization with Hunter syndrome has been reported. Here, we report the case of a 23-year-old Japanese man with Hunter syndrome who developed subcortical infarction by the mechanism similar to branch atheromatous disease (BAD). CASE PRESENTATION He had been treated with idursulfase supplementation. He presented with left-sided weakness and conjugate eye deviation to the right, and was diagnosed with branch atheromatous disease affecting the right corona radiata, based on MRI findings. The patient was treated with argatroban and aspirin. Magnetic resonance angiography demonstrated no evidence of luminal narrowing of the cerebral arteries. T1-sampling perfection with application-optimized contrasts by using different flip angle evolutions (SPACE) imaging revealed thickened middle cerebral artery. The patient had markedly low flow-mediated vasodilation, suggesting impaired vasodilation in response to nitric monoxide. CONCLUSION The arterial wall thickening and impaired vasodilation in the cerebral arteries related to subcortical infarction. We should clarify the mechanism of cerebral infarction in Hunter syndrome patients.
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Affiliation(s)
- Motoya Kimura
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan; Department of Neurology, Aichi Medical University, Nagakute, Japan.
| | - Yoshiteru Azuma
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Soutarou Taguchi
- Department of Neurology, Aichi Medical University, Nagakute, Japan; Parkinson's Disease Advanced Therapy Center, Aichi Medical University Hospital, Nagakute, Japan
| | - Mizuki Takagi
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Hiromitsu Mori
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Yasuto Shimomura
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Jun-Ichi Niwa
- Department of Neurology, Aichi Medical University, Nagakute, Japan
| | - Manabu Doyu
- Department of Neurology, Aichi Medical University, Nagakute, Japan
| | - Akihisa Okumura
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
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Kawagashira Y, Koike H, Takahashi M, Ohyama K, Iijima M, Katsuno M, Niwa JI, Doyu M, Sobue G. Aberrant Expression of Nodal and Paranodal Molecules in Neuropathy Associated With IgM Monoclonal Gammopathy With Anti-Myelin-Associated Glycoprotein Antibodies. J Neuropathol Exp Neurol 2021; 79:1303-1312. [PMID: 32856086 DOI: 10.1093/jnen/nlaa085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/02/2020] [Accepted: 07/09/2020] [Indexed: 11/13/2022] Open
Abstract
To clarify the pathogenesis of anti-myelin-associated glycoprotein (MAG) antibody neuropathy associated with IgM monoclonal gammopathy (anti-MAG neuropathy), sural nerve biopsy specimens from 15 patients were investigated. Sodium channels, potassium channels, contactin-associated protein 1 (Caspr1), contactin 1, and neurofascin were evaluated by immunofluorescence in teased-fiber preparations. Immunoreactivity to the pan-sodium channel in both anti-MAG neuropathy patients and in normal controls was concentrated at the node of Ranvier unless there was demyelination, which was defined as the widening of the node of Ranvier. However, this immunoreactivity became weak or disappeared as demyelination progressed. In contrast, KCNQ2 immunostaining was nearly absent even in the absence of demyelination. The lengths of Caspr1, contactin 1, and pan-neurofascin immunostaining sites at the paranode were significantly increased compared with those of normal controls despite the absence of demyelination. The length of paranodal neurofascin staining correlated with the anti-MAG antibody titer, nerve conduction indices, the frequency of de/remyelination in teased-fiber preparations, and the frequency of widely spaced myelin (p < 0.05, p < 0.05, p < 0.01, and <0.05, respectively). These findings suggest that nodal and paranodal molecular alterations occur in early stages preceding the morphological changes associated with demyelination in anti-MAG neuropathy.
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Affiliation(s)
| | - Haruki Koike
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya
| | - Mie Takahashi
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya
| | - Ken Ohyama
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya
| | - Masahiro Iijima
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya
| | - Jun-Ichi Niwa
- Department of Neurology, Aichi Medical University, Nagakute
| | - Manabu Doyu
- Department of Neurology, Aichi Medical University, Nagakute
| | - Gen Sobue
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya.,Research Division of Dementia and Neurodegenerative Disease, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Ichikawa Y, Tsunoda Y, Nishikawa T, Fujikake A, Fukuoka TA, Tokui K, Niwa JI, Izumi M, Nakao N, Doyu M. [Living situation of the in-home patients suffering from amyotrophic lateral sclerosis in Aichi prefecture, Japan]. Rinsho Shinkeigaku 2012; 52:320-328. [PMID: 22688111 DOI: 10.5692/clinicalneurol.52.320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
It is essential that we know the real situation of at-home patients with amyotrophic lateral sclerosis (ALS) in order to improve their medical support system. We indirectly investigated the daily living status of ALS patients and their families at home by conducting on individual questionnaires survey for nurses working at public health centers in Aichi prefecture, Japan. Detailed information about 136 cases was obtained, and we could clarify the need for variety of communication methods, plasticity of medical interrelations and care between neurologists and home doctors, incomplete utilization of social resources including various official support, overwork among single caregivers, and underdeveloped immature individual medical care support programs for them. Thus it might be important that we should promote the sure utilization of social resources and programming the individual medical care support in their earlier stages. And moreover, we should also consider constructing a general support system for at-home patients with ALS, in which each professional would owe the dividing responsibility, without role duplications. These strategies would lead to overall the better quality of life among ALS patients, and their families.
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Affiliation(s)
- Yuko Ichikawa
- Division of Neurology, Department of Internal Medicine, Aichi Medical University
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Iguchi Y, Katsuno M, Niwa JI, Yamada SI, Sone J, Waza M, Adachi H, Tanaka F, Nagata KI, Arimura N, Watanabe T, Kaibuchi K, Sobue G. TDP-43 depletion induces neuronal cell damage through dysregulation of Rho family GTPases. J Biol Chem 2009; 284:22059-22066. [PMID: 19535326 DOI: 10.1074/jbc.m109.012195] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The 43-kDa TAR DNA-binding protein (TDP-43) is known to be a major component of the ubiquitinated inclusions characteristic of amyotrophic lateral sclerosis and frontotemporal lobar degeneration with ubiquitin-positive inclusions. Although TDP-43 is a nuclear protein, it disappears from the nucleus of affected neurons and glial cells, implicating TDP-43 loss of function in the pathogenesis of neurodegeneration. Here we show that the knockdown of TDP-43 in differentiated Neuro-2a cells inhibited neurite outgrowth and induced cell death. In knockdown cells, the Rho family members RhoA, Rac1, and Cdc42 GTPases were inactivated, and membrane localization of these molecules was reduced. In addition, TDP-43 depletion significantly suppressed protein geranylgeranylation, a key regulating factor of Rho family activity and intracellular localization. In contrast, overexpression of TDP-43 mitigated the cellular damage caused by pharmacological inhibition of geranylgeranylation. Furthermore administration of geranylgeranyl pyrophosphate partially restored cell viability and neurite outgrowth in TDP-43 knockdown cells. In summary, our data suggest that TDP-43 plays a key role in the maintenance of neuronal cell morphology and survival possibly through protein geranylgeranylation of Rho family GTPases.
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Affiliation(s)
- Yohei Iguchi
- Departments of Neurology, Showa-ku, Nagoya 466-8550
| | - Masahisa Katsuno
- Departments of Neurology, Showa-ku, Nagoya 466-8550; Institute for Advanced Research, Nagoya University, Nagoya 464-8601
| | - Jun-Ichi Niwa
- Stroke Center, Aichi Medical University, Aichi 480-1195
| | | | - Jun Sone
- Departments of Neurology, Showa-ku, Nagoya 466-8550
| | | | | | | | - Koh-Ichi Nagata
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, Aichi 480-0838
| | - Nariko Arimura
- Tamagawa University Brain Science Institute, Tokyo 194-8610, Japan
| | - Takashi Watanabe
- Institute for Advanced Research, Nagoya University, Nagoya 464-8601; Cell Pharmacology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550
| | - Kozo Kaibuchi
- Cell Pharmacology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550
| | - Gen Sobue
- Departments of Neurology, Showa-ku, Nagoya 466-8550
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Jiang YM, Yamamoto M, Tanaka F, Ishigaki S, Katsuno M, Adachi H, Niwa JI, Doyu M, Yoshida M, Hashizume Y, Sobue G. Gene expressions specifically detected in motor neurons (dynactin 1, early growth response 3, acetyl-CoA transporter, death receptor 5, and cyclin C) differentially correlate to pathologic markers in sporadic amyotrophic lateral sclerosis. J Neuropathol Exp Neurol 2007; 66:617-27. [PMID: 17620987 DOI: 10.1097/nen.0b013e318093ece3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In a differential gene expression profile, we showed previously that dynactin 1 (DCTN1), early growth response 3 (EGR3), acetyl-CoA transporter (ACATN), death receptor 5 (DR5), and cyclin C (CCNC) were prominently up- or downregulated in motor neurons of sporadic amyotrophic lateral sclerosis (ALS). In the present study, we examined the correlation between the expression levels of these genes and the levels of pathologic markers for motor neuron degeneration (i.e. cytoplasmic accumulation of phosphorylated neurofilament H [pNF-H] and ubiquitylated protein) and the numbers of residual motor neurons in 20 autopsies of patients with sporadic ALS. DCTN1 and EGR3 were widely downregulated, and the changes in gene expression were correlated to the number of residual motor neurons. In particular, DCTN1 was markedly downregulated in most residual motor neurons before the accumulation of pNF-H, even in cases with well-preserved motor neuron populations. ACATN, DR5, and CCNC were upregulated in subpopulations of residual motor neurons, and their expression levels were well correlated with the levels of pNF-H accumulation and the number of residual motor neurons. The expressions of DCTN1, EGR3, ACATN, and DR5 were all markedly altered before ubiquitylated protein accumulation. DCTN1 downregulation appears to be an early event before the appearance of neurodegeneration markers, whereas upregulations of DR5 and CCNC are relatively later phenomena associated with pathologic markers and leading to neuronal death. The sequence of motor neuron-specific gene expression changes in sporadic ALS can be beneficial information in developing appropriate therapeutic strategies for neurodegeneration.
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Affiliation(s)
- Yue-Mei Jiang
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Tanaka F, Niwa JI, Ishigaki S, Katsuno M, Waza M, Yamamoto M, Doyu M, Sobue G. Gene expression profiling toward understanding of ALS pathogenesis. Ann N Y Acad Sci 2007; 1086:1-10. [PMID: 17185501 DOI: 10.1196/annals.1377.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although more than 130 years have gone by since the first description in 1869 by Jean-Martin Charcot, the mechanism underlying the characteristic selective motor neuron degeneration in amyotrophic lateral sclerosis (ALS) has remained elusive. Modest advances in this research field have been achieved by the identification of copper/zinc superoxide dismutase 1 (SOD1) as one of the causative genes for rare familial ALS (FALS) and by the development and analysis of mutant SOD1 transgenic mouse models. However, in sporadic ALS (SALS) with many more patients, causative or critical genes situated upstream of the disease pathway have not yet been elucidated and no available disease models have been established. To approach genes causative or critical for ALS, gene expression profiling in tissues primarily affected by the disease has represented an attractive research strategy. We have been working on screening these genes employing and combining several new technologies such as cDNA microarray, molecular indexing, and laser capture microdissection. Many of the resultant genes are of intense interest and may provide a powerful tool for determining the molecular mechanisms of ALS. However, we have barely arrived at the starting point and are confronting an enormous number of genes whose roles remain undetermined. Challenging tasks lie ahead of us such as identifying which genes are really causative for ALS and developing a disease model of SALS with due consideration for the expression changes in those genes.
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Affiliation(s)
- Fumiaki Tanaka
- Department of Neurology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
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10
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Hishikawa N, Hashizume Y, Yoshida M, Niwa JI, Tanaka F, Sobue G. Tuft-shaped astrocytes in Lewy body disease. Acta Neuropathol 2005; 109:373-80. [PMID: 15668789 DOI: 10.1007/s00401-004-0967-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2004] [Revised: 11/16/2004] [Accepted: 11/16/2004] [Indexed: 11/28/2022]
Abstract
We investigated the occurrence and distribution of tuft-shaped astrocytes (TuSAs) in 60 brains from patients with Lewy body disease (LBD), which were clinically diagnosed as Parkinson's disease (PD) or dementia with Lewy bodies (DLB), and 85 brains from control subjects. TuSAs have been documented as a neuropathological hallmark of progressive supranuclear palsy (PSP). We found phosphorylated tau (p-tau)-positive and alpha-synuclein-negative TuSAs in 10 of 60 patients with LBD and 3 of 85 control cases. TuSAs were mainly located within the precentral and premotor gyri of the frontal lobe cortex. There were only few TuSAs, but the distribution pattern and morphological and immunohistological features were similar to that in PSP. Furthermore, other p-tau positive structures, including aggregates in neurons, coiled-like glial cells and threads showed a similar distribution to those in PSP; mainly in the hippocampus, striatum, subthalamic nucleus, precentral and premotor gyri, brainstem nucleus, and dentate nucleus. In these cases, however, neuronal loss and gliosis were not seen in the regions involved in PSP, such as the subthalamic nucleus, pallidum, inferior olivary, cerebellar dentate nuclei, and periaqueductal gray matter. Clinical features were indistinguishable between the LBD with and without TuSAs. The appearance of TuSAs was not related to the frequency of Lewy bodies, neurofibrillary tangles, and senile plaques, but was significantly more pronounced with advancing age in both LBD and controls. These findings suggest that in a subgroup of elderly individual cases, especially associated with LB pathology, the glial and neuronal p-tau accumulation is increased and has a distributional pattern similar to PSP.
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Affiliation(s)
- Nozomi Hishikawa
- Department of Neurology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, 466-8550 Nagoya, Japan
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Hishikawa N, Niwa JI, Doyu M, Ito T, Ishigaki S, Hashizume Y, Sobue G. Dorfin localizes to the ubiquitylated inclusions in Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and amyotrophic lateral sclerosis. Am J Pathol 2003; 163:609-19. [PMID: 12875980 PMCID: PMC1868225 DOI: 10.1016/s0002-9440(10)63688-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In many neurodegenerative diseases, the cytopathological hallmark is the presence of ubiquitylated inclusions consisting of insoluble protein aggregates. Lewy bodies in Parkinson's disease and dementia with Lewy bodies disease, glial cell inclusions in multiple system atrophy, and hyaline inclusions in amyotrophic lateral sclerosis (ALS) are representative of these inclusions. The elucidation of the components of these inclusions and the mechanisms underlying inclusion formation is important in uncovering the pathogenesis of these disorders. We hypothesized that Dorfin, a perinuclearly located E3 ubiquitin ligase, participates in the formation of ubiquitylated inclusions in a wide range of neurodegenerative diseases. Here, we report that affinity-purified anti-Dorfin antibody labeled ubiquitylated inclusions of Parkinson's disease, dementia with Lewy bodies disease, multiple system atrophy, and sporadic and familial ALS. A double-immunofluorescence study revealed that Dorfin shows a distribution pattern parallel to that of ubiquitin. Furthermore, by a filter trap assay, we detected that Dorfin is present in the ubiquitylated high-molecular weight structures derived from these diseases. These results suggest that Dorfin plays a crucial role in the formation of ubiquitylated inclusions of alpha-synucleinopathy and ALS. However, because we failed to show the direct binding of alpha-synuclein with Dorfin, future investigations into the binding partner(s) of Dorfin will be needed to deepen our understanding of the pathophysiology of alpha-synucleinopathy and ALS.
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Affiliation(s)
- Nozomi Hishikawa
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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12
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Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by loss of nigra dopaminergic neurons. Lewy bodies (LBs) are a characteristic neuronal inclusion in PD brains. In this study, we report that Dorfin, a RING finger-type ubiquityl ligase for mutant superoxide dismutase-1, was localized with ubiquitin in LBs. Recently, synphilin-1 was identified to associate with alpha-synuclein and to be a major component of LBs. We found that overexpression of synphilin-1 in cultured cells led to the formation of large juxtanuclear inclusions, but showed no cytotoxicity. Dorfin colocalized in these large inclusions with ubiquitin and proteasomal components. In contrast to full-length synphilin-1, overexpression of the central portion of synphilin-1, including ankyrin-like repeats, a coiled-coil domain, and an ATP/GTP-binding domain, predominantly led to the formation of small punctate aggregates scattered throughout the cytoplasm and showed cytotoxic effects. Dorfin and ubiquitin did not localize in these small aggregates. Overexpression of the N or C terminus of synphilin-1 did not lead to the formation of any aggregates. Dorfin physically bound and ubiquitylated synphilin-1 through its central portion, but did not ubiquitylate wild-type or mutant alpha-synuclein. These results suggest that the central domain of synphilin-1 has an important role in the formation of aggregates and cytotoxicity and that Dorfin may be involved in the pathogenic process of PD and LB formation by ubiquitylation of synphilin-1.
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Affiliation(s)
- Takashi Ito
- Department of Neurology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550, Japan
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13
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Niwa JI, Ishigaki S, Hishikawa N, Yamamoto M, Doyu M, Murata S, Tanaka K, Taniguchi N, Sobue G. Dorfin ubiquitylates mutant SOD1 and prevents mutant SOD1-mediated neurotoxicity. J Biol Chem 2002; 277:36793-8. [PMID: 12145308 DOI: 10.1074/jbc.m206559200] [Citation(s) in RCA: 163] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive paralytic disorder resulting from the degeneration of motor neurons in the cerebral cortex, brainstem, and spinal cord. The cytopathological hallmark in the remaining motor neurons of ALS is the presence of ubiquitylated inclusions consisting of insoluble protein aggregates. In this paper we report that Dorfin, a RING finger-type E3 ubiquitin ligase, is predominantly localized in the inclusion bodies of familial ALS with a copper/zinc superoxide dismutase (SOD1) mutation as well as sporadic ALS. Dorfin physically bound and ubiquitylated various SOD1 mutants derived from familial ALS patients and enhanced their degradation, but it had no effect on the stability of the wild-type SOD1. The overexpression of Dorfin protected against the toxic effects of mutant SOD1 on neural cells and reduced SOD1 inclusions. Our results indicate that Dorfin protects neurons by recognizing and then ubiquitylating mutant SOD1 proteins followed by targeting them for proteasomal degradation.
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Affiliation(s)
- Jun-Ichi Niwa
- Department of Neurology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550, Japan
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