1
|
Hagihara H, Shoji H, Hattori S, Sala G, Takamiya Y, Tanaka M, Ihara M, Shibutani M, Hatada I, Hori K, Hoshino M, Nakao A, Mori Y, Okabe S, Matsushita M, Urbach A, Katayama Y, Matsumoto A, Nakayama KI, Katori S, Sato T, Iwasato T, Nakamura H, Goshima Y, Raveau M, Tatsukawa T, Yamakawa K, Takahashi N, Kasai H, Inazawa J, Nobuhisa I, Kagawa T, Taga T, Darwish M, Nishizono H, Takao K, Sapkota K, Nakazawa K, Takagi T, Fujisawa H, Sugimura Y, Yamanishi K, Rajagopal L, Hannah ND, Meltzer HY, Yamamoto T, Wakatsuki S, Araki T, Tabuchi K, Numakawa T, Kunugi H, Huang FL, Hayata-Takano A, Hashimoto H, Tamada K, Takumi T, Kasahara T, Kato T, Graef IA, Crabtree GR, Asaoka N, Hatakama H, Kaneko S, Kohno T, Hattori M, Hoshiba Y, Miyake R, Obi-Nagata K, Hayashi-Takagi A, Becker LJ, Yalcin I, Hagino Y, Kotajima-Murakami H, Moriya Y, Ikeda K, Kim H, Kaang BK, Otabi H, Yoshida Y, Toyoda A, Komiyama NH, Grant SGN, Ida-Eto M, Narita M, Matsumoto KI, Okuda-Ashitaka E, Ohmori I, Shimada T, Yamagata K, Ageta H, Tsuchida K, Inokuchi K, Sassa T, Kihara A, Fukasawa M, Usuda N, Katano T, Tanaka T, Yoshihara Y, Igarashi M, Hayashi T, Ishikawa K, Yamamoto S, Nishimura N, Nakada K, Hirotsune S, Egawa K, Higashisaka K, Tsutsumi Y, Nishihara S, Sugo N, Yagi T, Ueno N, Yamamoto T, Kubo Y, Ohashi R, Shiina N, Shimizu K, Higo-Yamamoto S, Oishi K, Mori H, Furuse T, Tamura M, Shirakawa H, Sato DX, Inoue YU, Inoue T, Komine Y, Yamamori T, Sakimura K, Miyakawa T. Large-scale animal model study uncovers altered brain pH and lactate levels as a transdiagnostic endophenotype of neuropsychiatric disorders involving cognitive impairment. eLife 2024; 12:RP89376. [PMID: 38529532 DOI: 10.7554/elife.89376] [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] [Indexed: 03/27/2024] Open
Abstract
Increased levels of lactate, an end-product of glycolysis, have been proposed as a potential surrogate marker for metabolic changes during neuronal excitation. These changes in lactate levels can result in decreased brain pH, which has been implicated in patients with various neuropsychiatric disorders. We previously demonstrated that such alterations are commonly observed in five mouse models of schizophrenia, bipolar disorder, and autism, suggesting a shared endophenotype among these disorders rather than mere artifacts due to medications or agonal state. However, there is still limited research on this phenomenon in animal models, leaving its generality across other disease animal models uncertain. Moreover, the association between changes in brain lactate levels and specific behavioral abnormalities remains unclear. To address these gaps, the International Brain pH Project Consortium investigated brain pH and lactate levels in 109 strains/conditions of 2294 animals with genetic and other experimental manipulations relevant to neuropsychiatric disorders. Systematic analysis revealed that decreased brain pH and increased lactate levels were common features observed in multiple models of depression, epilepsy, Alzheimer's disease, and some additional schizophrenia models. While certain autism models also exhibited decreased pH and increased lactate levels, others showed the opposite pattern, potentially reflecting subpopulations within the autism spectrum. Furthermore, utilizing large-scale behavioral test battery, a multivariate cross-validated prediction analysis demonstrated that poor working memory performance was predominantly associated with increased brain lactate levels. Importantly, this association was confirmed in an independent cohort of animal models. Collectively, these findings suggest that altered brain pH and lactate levels, which could be attributed to dysregulated excitation/inhibition balance, may serve as transdiagnostic endophenotypes of debilitating neuropsychiatric disorders characterized by cognitive impairment, irrespective of their beneficial or detrimental nature.
Collapse
Affiliation(s)
- Hideo Hagihara
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Hirotaka Shoji
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Satoko Hattori
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Giovanni Sala
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Yoshihiro Takamiya
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Mika Tanaka
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Mihiro Shibutani
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Izuho Hatada
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Kei Hori
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Mikio Hoshino
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Akito Nakao
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Yasuo Mori
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masayuki Matsushita
- Department of Molecular Cellular Physiology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan
| | - Anja Urbach
- Department of Neurology, Jena University Hospital, Jena, Germany
| | - Yuta Katayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Akinobu Matsumoto
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Keiichi I Nakayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Shota Katori
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics, Mishima, Japan
| | - Takuya Sato
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics, Mishima, Japan
| | - Takuji Iwasato
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics, Mishima, Japan
| | - Haruko Nakamura
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yoshio Goshima
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Matthieu Raveau
- Laboratory for Neurogenetics, RIKEN Center for Brain Science, Wako, Japan
| | - Tetsuya Tatsukawa
- Laboratory for Neurogenetics, RIKEN Center for Brain Science, Wako, Japan
| | - Kazuhiro Yamakawa
- Laboratory for Neurogenetics, RIKEN Center for Brain Science, Wako, Japan
- Department of Neurodevelopmental Disorder Genetics, Institute of Brain Sciences, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Noriko Takahashi
- Laboratory of Structural Physiology, Center for Disease Biology and Integrative Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Physiology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Haruo Kasai
- Laboratory of Structural Physiology, Center for Disease Biology and Integrative Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
- International Research Center for Neurointelligence (WPI-IRCN), UTIAS, The University of Tokyo, Tokyo, Japan
| | - Johji Inazawa
- Research Core, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ikuo Nobuhisa
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tetsushi Kagawa
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tetsuya Taga
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mohamed Darwish
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Department of Behavioral Physiology, Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan
| | | | - Keizo Takao
- Department of Behavioral Physiology, Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan
- Department of Behavioral Physiology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Kiran Sapkota
- Department of Neuroscience, Southern Research, Birmingham, United States
| | - Kazutoshi Nakazawa
- Department of Neuroscience, Southern Research, Birmingham, United States
| | - Tsuyoshi Takagi
- Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai, Japan
| | - Haruki Fujisawa
- Department of Endocrinology, Diabetes and Metabolism, School of Medicine, Fujita Health University, Toyoake, Japan
| | - Yoshihisa Sugimura
- Department of Endocrinology, Diabetes and Metabolism, School of Medicine, Fujita Health University, Toyoake, Japan
| | - Kyosuke Yamanishi
- Department of Neuropsychiatry, Hyogo Medical University School of Medicine, Nishinomiya, Japan
| | - Lakshmi Rajagopal
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Nanette Deneen Hannah
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Tohru Yamamoto
- Department of Molecular Neurobiology, Faculty of Medicine, Kagawa University, Kita-gun, Japan
| | - Shuji Wakatsuki
- Department of Peripheral Nervous System Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Toshiyuki Araki
- Department of Peripheral Nervous System Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Katsuhiko Tabuchi
- Department of Molecular & Cellular Physiology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tadahiro Numakawa
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Hiroshi Kunugi
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
- Department of Psychiatry, Teikyo University School of Medicine, Tokyo, Japan
| | - Freesia L Huang
- Program of Developmental Neurobiology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, United States
| | - Atsuko Hayata-Takano
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
- Department of Pharmacology, Graduate School of Dentistry, Osaka University, Suita, Japan
- United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Japan
| | - Hitoshi Hashimoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
- United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Japan
- Division of Bioscience, Institute for Datability Science, Osaka University, Suita, Japan
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
- Department of Molecular Pharmaceutical Science, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Kota Tamada
- RIKEN Brain Science Institute, Wako, Japan
- Department of Physiology and Cell Biology, Kobe University School of Medicine, Kobe, Japan
| | - Toru Takumi
- RIKEN Brain Science Institute, Wako, Japan
- Department of Physiology and Cell Biology, Kobe University School of Medicine, Kobe, Japan
| | - Takaoki Kasahara
- Laboratory for Molecular Dynamics of Mental Disorders, RIKEN Center for Brain Science, Wako, Japan
- Institute of Biology and Environmental Sciences, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany
| | - Tadafumi Kato
- Laboratory for Molecular Dynamics of Mental Disorders, RIKEN Center for Brain Science, Wako, Japan
- Department of Psychiatry and Behavioral Science, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Isabella A Graef
- Department of Pathology, Stanford University School of Medicine, Stanford, United States
| | - Gerald R Crabtree
- Department of Pathology, Stanford University School of Medicine, Stanford, United States
| | - Nozomi Asaoka
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hikari Hatakama
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Shuji Kaneko
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Takao Kohno
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Mitsuharu Hattori
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshio Hoshiba
- Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Ryuhei Miyake
- Laboratory for Multi-scale Biological Psychiatry, RIKEN Center for Brain Science, Wako, Japan
| | - Kisho Obi-Nagata
- Laboratory for Multi-scale Biological Psychiatry, RIKEN Center for Brain Science, Wako, Japan
| | - Akiko Hayashi-Takagi
- Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
- Laboratory for Multi-scale Biological Psychiatry, RIKEN Center for Brain Science, Wako, Japan
| | - Léa J Becker
- Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Ipek Yalcin
- Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique, Université de Strasbourg, Strasbourg, France
| | - Yoko Hagino
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | | | - Yuki Moriya
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kazutaka Ikeda
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hyopil Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, United States
| | - Bong-Kiun Kaang
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Hikari Otabi
- College of Agriculture, Ibaraki University, Ami, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Yuta Yoshida
- College of Agriculture, Ibaraki University, Ami, Japan
| | - Atsushi Toyoda
- College of Agriculture, Ibaraki University, Ami, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Ibaraki University Cooperation between Agriculture and Medical Science (IUCAM), Ibaraki, Japan
| | - Noboru H Komiyama
- Genes to Cognition Program, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Simons Initiative for the Developing Brain, Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Seth G N Grant
- Genes to Cognition Program, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Simons Initiative for the Developing Brain, Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Michiru Ida-Eto
- Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Tsu, Japan
| | - Masaaki Narita
- Department of Developmental and Regenerative Medicine, Mie University, Graduate School of Medicine, Tsu, Japan
| | - Ken-Ichi Matsumoto
- Department of Biosignaling and Radioisotope Experiment, Interdisciplinary Center for Science Research, Organization for Research and Academic Information, Shimane University, Izumo, Japan
| | - Emiko Okuda-Ashitaka
- Department of Biomedical Engineering, Osaka Institute of Technology, Osaka, Japan
| | - Iori Ohmori
- Department of Physiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tadayuki Shimada
- Child Brain Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kanato Yamagata
- Child Brain Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hiroshi Ageta
- Division for Therapies Against Intractable Diseases, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Kunihiro Tsuchida
- Division for Therapies Against Intractable Diseases, Center for Medical Science, Fujita Health University, Toyoake, Japan
| | - Kaoru Inokuchi
- Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
- Core Research for Evolutionary Science and Technology (CREST), Japan Science and Technology Agency (JST), University of Toyama, Toyama, Japan
| | - Takayuki Sassa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Akio Kihara
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Motoaki Fukasawa
- Department of Anatomy II, Fujita Health University School of Medicine, Toyoake, Japan
| | - Nobuteru Usuda
- Department of Anatomy II, Fujita Health University School of Medicine, Toyoake, Japan
| | - Tayo Katano
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Japan
| | - Teruyuki Tanaka
- Department of Developmental Medical Sciences, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoshihiro Yoshihara
- Laboratory for Systems Molecular Ethology, RIKEN Center for Brain Science, Wako, Japan
| | - Michihiro Igarashi
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Transdiciplinary Research Program, Niigata University, Niigata, Japan
| | - Takashi Hayashi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Kaori Ishikawa
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Japan
| | - Satoshi Yamamoto
- Integrated Technology Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd, Fujisawa, Japan
| | - Naoya Nishimura
- Integrated Technology Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd, Fujisawa, Japan
| | - Kazuto Nakada
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Japan
| | - Shinji Hirotsune
- Department of Genetic Disease Research, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kiyoshi Egawa
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kazuma Higashisaka
- Laboratory of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Yasuo Tsutsumi
- Laboratory of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Shoko Nishihara
- Glycan & Life Systems Integration Center (GaLSIC), Soka University, Tokyo, Japan
| | - Noriyuki Sugo
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Takeshi Yagi
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Naoto Ueno
- Laboratory of Morphogenesis, National Institute for Basic Biology, Okazaki, Japan
| | - Tomomi Yamamoto
- Division of Biophysics and Neurobiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - Yoshihiro Kubo
- Division of Biophysics and Neurobiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - Rie Ohashi
- Laboratory of Neuronal Cell Biology, National Institute for Basic Biology, Okazaki, Japan
- Department of Basic Biology, SOKENDAI (Graduate University for Advanced Studies), Okazaki, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan
| | - Nobuyuki Shiina
- Laboratory of Neuronal Cell Biology, National Institute for Basic Biology, Okazaki, Japan
- Department of Basic Biology, SOKENDAI (Graduate University for Advanced Studies), Okazaki, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan
| | - Kimiko Shimizu
- Department of Biological Sciences, School of Science, The University of Tokyo, Tokyo, Japan
| | - Sayaka Higo-Yamamoto
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Katsutaka Oishi
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda, Japan
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
- School of Integrative and Global Majors (SIGMA), University of Tsukuba, Tsukuba, Japan
| | - Hisashi Mori
- Department of Molecular Neuroscience, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Tamio Furuse
- Mouse Phenotype Analysis Division, Japan Mouse Clinic, RIKEN BioResource Research Center (BRC), Tsukuba, Japan
| | - Masaru Tamura
- Mouse Phenotype Analysis Division, Japan Mouse Clinic, RIKEN BioResource Research Center (BRC), Tsukuba, Japan
| | - Hisashi Shirakawa
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Daiki X Sato
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Yukiko U Inoue
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Takayoshi Inoue
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Yuriko Komine
- Young Researcher Support Group, Research Enhancement Strategy Office, National Institute for Basic Biology, National Institute of Natural Sciences, Okazaki, Japan
- Division of Brain Biology, National Institute for Basic Biology, Okazaki, Japan
| | - Tetsuo Yamamori
- Division of Brain Biology, National Institute for Basic Biology, Okazaki, Japan
- Laboratory for Molecular Analysis of Higher Brain Function, RIKEN Center for Brain Science, Wako, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Tsuyoshi Miyakawa
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Japan
| |
Collapse
|
2
|
Shima Y, Sasagawa S, Ota N, Oyama R, Tanaka M, Kubota-Sakashita M, Kawakami H, Kobayashi M, Takubo N, Ozeki AN, Sun X, Kim YJ, Kamatani Y, Matsuda K, Maejima K, Fujita M, Noda K, Kamiyama H, Tanikawa R, Nagane M, Shibahara J, Tanaka T, Rikitake Y, Mataga N, Takahashi S, Kosaki K, Okano H, Furihata T, Nakaki R, Akimitsu N, Wada Y, Ohtsuka T, Kurihara H, Kamiguchi H, Okabe S, Nakafuku M, Kato T, Nakagawa H, Saito N, Nakatomi H. Increased PDGFRB and NF-κB signaling caused by highly prevalent somatic mutations in intracranial aneurysms. Sci Transl Med 2023; 15:eabq7721. [PMID: 37315111 DOI: 10.1126/scitranslmed.abq7721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/23/2023] [Indexed: 06/16/2023]
Abstract
Intracranial aneurysms (IAs) are a high-risk factor for life-threatening subarachnoid hemorrhage. Their etiology, however, remains mostly unknown at present. We conducted screening for sporadic somatic mutations in 65 IA tissues (54 saccular and 11 fusiform aneurysms) and paired blood samples by whole-exome and targeted deep sequencing. We identified sporadic mutations in multiple signaling genes and examined their impact on downstream signaling pathways and gene expression in vitro and an arterial dilatation model in mice in vivo. We identified 16 genes that were mutated in at least one IA case and found that these mutations were highly prevalent (92%: 60 of 65 IAs) among all IA cases examined. In particular, mutations in six genes (PDGFRB, AHNAK, OBSCN, RBM10, CACNA1E, and OR5P3), many of which are linked to NF-κB signaling, were found in both fusiform and saccular IAs at a high prevalence (43% of all IA cases examined). We found that mutant PDGFRBs constitutively activated ERK and NF-κB signaling, enhanced cell motility, and induced inflammation-related gene expression in vitro. Spatial transcriptomics also detected similar changes in vessels from patients with IA. Furthermore, virus-mediated overexpression of a mutant PDGFRB induced a fusiform-like dilatation of the basilar artery in mice, which was blocked by systemic administration of the tyrosine kinase inhibitor sunitinib. Collectively, this study reveals a high prevalence of somatic mutations in NF-κB signaling pathway-related genes in both fusiform and saccular IAs and opens a new avenue of research for developing pharmacological interventions.
Collapse
Affiliation(s)
- Yasuyuki Shima
- Biomedical Neural Dynamics Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
- Neurodegenerative Disorders Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
| | - Shota Sasagawa
- Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Nakao Ota
- Biomedical Neural Dynamics Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
- Department of Neurosurgery, Sapporo Teishinkai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Rieko Oyama
- Biomedical Neural Dynamics Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
| | - Minoru Tanaka
- Biomedical Neural Dynamics Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
- Division of Innovative Cancer Therapy and Department of Surgical Neuro-Oncology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Mie Kubota-Sakashita
- Department of Psychiatry and Behavioral Science, Juntendo University Graduate School of Medicine, Tokyo 113-0033, Japan
| | - Hirochika Kawakami
- Department of Psychiatry and Behavioral Science, Juntendo University Graduate School of Medicine, Tokyo 113-0033, Japan
| | - Mika Kobayashi
- Isotope Science Center, University of Tokyo, Tokyo 113-0032, Japan
| | - Naoko Takubo
- Isotope Science Center, University of Tokyo, Tokyo 113-0032, Japan
| | | | - Xiaoning Sun
- Isotope Science Center, University of Tokyo, Tokyo 113-0032, Japan
| | - Yeon-Jeong Kim
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan
| | - Yoichiro Kamatani
- Laboratory of Complex Trait Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo 108-8639, Japan
| | - Koichi Matsuda
- Laboratory of Clinical Genome Sequencing, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo 108-8639, Japan
| | - Kazuhiro Maejima
- Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Masashi Fujita
- Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Kosumo Noda
- Department of Neurosurgery, Sapporo Teishinkai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Hiroyasu Kamiyama
- Department of Neurosurgery, Sapporo Teishinkai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Rokuya Tanikawa
- Department of Neurosurgery, Sapporo Teishinkai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Motoo Nagane
- Department of Neurosurgery, Faculty of Medicine, Kyorin University, Mitaka, Tokyo 181-8611, Japan
| | - Junji Shibahara
- Department of Pathology, Faculty of Medicine, Kyorin University, Mitaka, Tokyo 181-8611, Japan
| | - Toru Tanaka
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Kobe, Hyogo 658-8558, Japan
| | - Yoshiyuki Rikitake
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Kobe, Hyogo 658-8558, Japan
| | - Nobuko Mataga
- Support Unit for Bio-Material Analysis, Research Resources Division, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
| | - Satoru Takahashi
- Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-0005, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University Faculty of Medicine, Tokyo 160-0016, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo 160-0016, Japan
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Wako, Saitama 351-0198, Japan
- International Center for Brain Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Tomomi Furihata
- Laboratory of Clinical Pharmacy and Experimental Therapeutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | | | | | - Youichiro Wada
- Isotope Science Center, University of Tokyo, Tokyo 113-0032, Japan
| | - Toshihisa Ohtsuka
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan
| | - Hiroki Kurihara
- Department of Molecular Cell Biology, Graduate School of Medicine and Faculty of Medicine, University of Tokyo, Tokyo 113-8654, Japan
| | - Hiroyuki Kamiguchi
- Laboratory for Neural Cell Dynamics, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine and Faculty of Medicine, University of Tokyo, Tokyo 113-8654, Japan
- Brain Medical Science Collaboration Division, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
| | - Masato Nakafuku
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Tadafumi Kato
- Department of Psychiatry and Behavioral Science, Juntendo University Graduate School of Medicine, Tokyo 113-0033, Japan
| | - Hidewaki Nakagawa
- Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Nobuhito Saito
- Department of Neurosurgery, Graduate School of Medicine, University of Tokyo, Tokyo 113-8654, Japan
| | - Hirofumi Nakatomi
- Biomedical Neural Dynamics Collaboration Laboratory, RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan
- Department of Neurosurgery, Faculty of Medicine, Kyorin University, Mitaka, Tokyo 181-8611, Japan
- Department of Neurosurgery, Graduate School of Medicine, University of Tokyo, Tokyo 113-8654, Japan
| |
Collapse
|
3
|
Kamei R, Okabe S. In vivo imaging of the phagocytic dynamics underlying efficient clearance of adult-born hippocampal granule cells by ramified microglia. Glia 2023. [PMID: 37102766 DOI: 10.1002/glia.24379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023]
Abstract
The phagocytosis of dead cells by microglia is essential in brain development and homeostasis. However, the mechanism underlying the efficient removal of cell corpses by ramified microglia remains poorly understood. Here, we investigated the phagocytosis of dead cells by ramified microglia in the hippocampal dentate gyrus, where adult neurogenesis and homeostatic cell clearance occur. Two-color imaging of microglia and apoptotic newborn neurons revealed two important characteristics. Firstly, frequent environmental surveillance and rapid engulfment reduced the time required for dead cell clearance. The motile microglial processes frequently contacted and enwrapped apoptotic neurons at the protrusion tips and completely digested them within 3-6 h of the initial contact. Secondly, while a single microglial process engaged in phagocytosis, the remaining processes continued environmental surveillance and initiated the removal of other dead cells. The simultaneous removal of multiple dead cells increases the clearance capacity of a single microglial cell. These two characteristics of ramified microglia contributed to their phagocytic speed and capacity, respectively. Consistently, the cell clearance rate was estimated to be 8-20 dead cells/microglia/day, supporting the efficiency of removing apoptotic newborn neurons. We concluded that ramified microglia specialize in utilizing individual motile processes to detect stochastic cell death events and execute parallel phagocytoses.
Collapse
Affiliation(s)
- Ryosuke Kamei
- Department of Cellular Neurobiology, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| |
Collapse
|
4
|
Nozawa O, Miyata M, Shiotani H, Kameyama T, Komaki R, Shimizu T, Kuriu T, Kashiwagi Y, Sato Y, Koebisu M, Aiba A, Okabe S, Mizutani K, Takai Y. Necl2/3-mediated mechanism for tripartite synapse formation. Development 2023; 150:285820. [PMID: 36458527 DOI: 10.1242/dev.200931] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 05/16/2022] [Accepted: 11/23/2022] [Indexed: 12/05/2022]
Abstract
Ramified, polarized protoplasmic astrocytes interact with synapses via perisynaptic astrocyte processes (PAPs) to form tripartite synapses. These astrocyte-synapse interactions mutually regulate their structures and functions. However, molecular mechanisms for tripartite synapse formation remain elusive. We developed an in vitro co-culture system for mouse astrocytes and neurons that induced astrocyte ramifications and PAP formation. Co-cultured neurons were required for astrocyte ramifications in a neuronal activity-dependent manner, and synaptically-released glutamate and activation of astrocytic mGluR5 metabotropic glutamate receptor were likely involved in astrocyte ramifications. Astrocytic Necl2 trans-interacted with axonal Necl3, inducing astrocyte-synapse interactions and astrocyte functional polarization by recruiting EAAT1/2 glutamate transporters and Kir4.1 K+ channel to the PAPs, without affecting astrocyte ramifications. This Necl2/3 trans-interaction increased functional synapse number. Thus, astrocytic Necl2, synaptically-released glutamate and axonal Necl3 cooperatively formed tripartite glutamatergic synapses in vitro. Studies on hippocampal mossy fiber synapses in Necl3 knockout and Necl2/3 double knockout mice confirmed these previously unreported mechanisms for astrocyte-synapse interactions and astrocyte functional polarization in vivo.
Collapse
Affiliation(s)
- Osamu Nozawa
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Muneaki Miyata
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Hajime Shiotani
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Takeshi Kameyama
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Ryouhei Komaki
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Tatsuhiro Shimizu
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Toshihiko Kuriu
- Osaka Medical and Pharmaceutical University, Research and Development Center, Takatsuki, Osaka 569-8686, Japan
| | - Yutaro Kashiwagi
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Yuka Sato
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Michinori Koebisu
- Section of Animal Research and Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Atsu Aiba
- Section of Animal Research and Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Kiyohito Mizutani
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Yoshimi Takai
- Division of Pathogenetic Signaling, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| |
Collapse
|
5
|
Urata S, Okabe S. Three-dimensional mouse cochlea imaging based on the modified Sca/eS using confocal microscopy. Anat Sci Int 2023:10.1007/s12565-023-00703-z. [PMID: 36773194 DOI: 10.1007/s12565-023-00703-z] [Citation(s) in RCA: 2] [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: 12/15/2022] [Accepted: 01/13/2023] [Indexed: 02/12/2023]
Abstract
The three-dimensional stria vascularis (SV) and cochlear blood vessel structure is essential for inner ear function. Here, modified Sca/eS, a sorbitol-based optical-clearing method, was reported to visualize SV and vascular structure in the intact mouse cochlea. Cochlear macrophages as well as perivascular-resident macrophage-like melanocytes were detected as GFP-positive cells of the CX3CR1+/GFP mice. This study's method was effective in elucidating inner ear function under both physiological and pathological conditions.
Collapse
Affiliation(s)
- Shinji Urata
- Department of Otolaryngology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan.
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| |
Collapse
|
6
|
Maruoka H, Kamei R, Mizutani S, Liu Q, Okabe S. Simultaneous Imaging of Microglial Dynamics and Neuronal Activity in Awake Mice. J Vis Exp 2022. [DOI: 10.3791/64111] [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: 10/31/2022] Open
|
7
|
Kamei R, Urata S, Maruoka H, Okabe S. In vivo Chronic Two-Photon Imaging of Microglia in the Mouse Hippocampus. J Vis Exp 2022. [PMID: 35876553 DOI: 10.3791/64104] [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] [Indexed: 10/31/2022]
Abstract
Microglia, the only immune cells resident in the brain, actively participate in neural circuit maintenance by modifying synapses and neuronal excitability. Recent studies have revealed the differential gene expression and functional heterogeneity of microglia in different brain regions. The unique functions of the hippocampal neural network in learning and memory may be associated with the active roles of microglia in synapse remodeling. However, inflammatory responses induced by surgical procedures have been problematic in the two-photon microscopic analysis of hippocampal microglia. Here, a method is presented that enables the chronic observation of microglia in all layers of the hippocampal CA1 through an imaging window. This method allows the analysis of morphological changes in microglial processes for more than 1 month. Long-term and high-resolution imaging of the resting microglia requires minimally invasive surgical procedures, appropriate objective lens selection, and optimized imaging techniques. The transient inflammatory response of hippocampal microglia may prevent imaging immediately after surgery, but the microglia restore their quiescent morphology within a few weeks. Furthermore, imaging neurons simultaneously with microglia allows us to analyze the interactions of multiple cell types in the hippocampus. This technique may provide essential information about microglial function in the hippocampus.
Collapse
Affiliation(s)
- Ryosuke Kamei
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo
| | - Shinji Urata
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo
| | - Hisato Maruoka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo;
| |
Collapse
|
8
|
Okabe S. The 70th anniversary issue: Preface. Microscopy (Oxf) 2022; 71:i2. [DOI: 10.1093/jmicro/dfab056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2021] [Indexed: 11/14/2022] Open
|
9
|
Terashima H, Minatohara K, Maruoka H, Okabe S. Imaging neural circuit pathology of autism spectrum disorders: autism-associated genes, animal models and the application of in vivo two-photon imaging. Microscopy (Oxf) 2022; 71:i81-i99. [DOI: 10.1093/jmicro/dfab039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/11/2021] [Accepted: 11/08/2021] [Indexed: 11/12/2022] Open
Abstract
Abstract
Recent advances in human genetics identified genetic variants involved in causing autism spectrum disorders (ASDs). Mouse models that mimic mutations found in patients with ASD exhibit behavioral phenotypes consistent with ASD symptoms. These mouse models suggest critical biological factors of ASD etiology. Another important implication of ASD genetics is the enrichment of ASD risk genes in molecules involved in developing synapses and regulating neural circuit function. Sophisticated in vivo imaging technologies applied to ASD mouse models identify common synaptic impairments in the neocortex, with genetic-mutation-specific defects in local neural circuits. In this article, we review synapse- and circuit-level phenotypes identified by in vivo two-photon imaging in multiple mouse models of ASD and discuss the contributions of altered synapse properties and neural circuit activity to ASD pathogenesis.
Collapse
Affiliation(s)
- Hiroshi Terashima
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keiichiro Minatohara
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hisato Maruoka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
10
|
Quaglio G, Toia P, Moser EI, Karapiperis T, Amunts K, Okabe S, Poo MM, Rah JC, Koninck YD, Ngai J, Richards L, Bjaalie JG. The International Brain Initiative: enabling collaborative science. Lancet Neurol 2021; 20:985-986. [PMID: 34800415 DOI: 10.1016/s1474-4422(21)00389-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
11
|
Endo M, Maruoka H, Okabe S. Advanced Technologies for Local Neural Circuits in the Cerebral Cortex. Front Neuroanat 2021; 15:757499. [PMID: 34803616 PMCID: PMC8595196 DOI: 10.3389/fnana.2021.757499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/13/2021] [Indexed: 11/13/2022] Open
Abstract
The neural network in the brain can be viewed as an integrated system assembled from a large number of local neural circuits specialized for particular brain functions. Activities of neurons in local neural circuits are thought to be organized both spatially and temporally under the rules optimized for their roles in information processing. It is well perceived that different areas of the mammalian neocortex have specific cognitive functions and distinct computational properties. However, the organizational principles of the local neural circuits in different cortical regions have not yet been clarified. Therefore, new research principles and related neuro-technologies that enable efficient and precise recording of large-scale neuronal activities and synaptic connections are necessary. Innovative technologies for structural analysis, including tissue clearing and expansion microscopy, have enabled super resolution imaging of the neural circuits containing thousands of neurons at a single synapse resolution. The imaging resolution and volume achieved by new technologies are beyond the limits of conventional light or electron microscopic methods. Progress in genome editing and related technologies has made it possible to label and manipulate specific cell types and discriminate activities of multiple cell types. These technologies will provide a breakthrough for multiscale analysis of the structure and function of local neural circuits. This review summarizes the basic concepts and practical applications of the emerging technologies and new insight into local neural circuits obtained by these technologies.
Collapse
Affiliation(s)
| | | | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
12
|
Morris K, Nami M, Bolanos JF, Lobo MA, Sadri-Naini M, Fiallos J, Sanchez GE, Bustos T, Chintam N, Amaya M, Strand SE, Mayuku-Dore A, Sakibova I, Biso GMN, DeFilippis A, Bravo D, Tarhan N, Claussen C, Mercado A, Braun S, Yuge L, Okabe S, Taghizadeh-Hesary F, Kotliar K, Sadowsky C, Chandra PS, Tripathi M, Katsaros V, Mehling B, Noroozian M, Abbasioun K, Amirjamshidi A, Hossein-Zadeh GA, Naraghi F, Barzegar M, Asadi-Pooya AA, Sahab-Negah S, Sadeghian S, Fahnestock M, Dilbaz N, Hussain N, Mari Z, Thatcher RW, Sipple D, Sidhu K, Chopra D, Costa F, Spena G, Berger T, Zelinsky D, Wheeler CJ, Ashford JW, Schulte R, Nezami MA, Kloor H, Filler A, Eliashiv DS, Sinha D, DeSalles AAF, Sadanand V, Suchkov S, Green K, Metin B, Hariri R, Cormier J, Yamamoto V, Kateb B. Neuroscience20 (BRAIN20, SPINE20, and MENTAL20) Health Initiative: A Global Consortium Addressing the Human and Economic Burden of Brain, Spine, and Mental Disorders Through Neurotech Innovations and Policies. J Alzheimers Dis 2021; 83:1563-1601. [PMID: 34487051 DOI: 10.3233/jad-215190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Neurological disorders significantly impact the world's economy due to their often chronic and life-threatening nature afflicting individuals which, in turn, creates a global disease burden. The Group of Twenty (G20) member nations, which represent the largest economies globally, should come together to formulate a plan on how to overcome this burden. The Neuroscience-20 (N20) initiative of the Society for Brain Mapping and Therapeutics (SBMT) is at the vanguard of this global collaboration to comprehensively raise awareness about brain, spine, and mental disorders worldwide. This paper aims to provide a comprehensive review of the various brain initiatives worldwide and highlight the need for cooperation and recommend ways to bring down costs associated with the discovery and treatment of neurological disorders. Our systematic search revealed that the cost of neurological and psychiatric disorders to the world economy by 2030 is roughly $16T. The cost to the economy of the United States is $1.5T annually and growing given the impact of COVID-19. We also discovered there is a shortfall of effective collaboration between nations and a lack of resources in developing countries. Current statistical analyses on the cost of neurological disorders to the world economy strongly suggest that there is a great need for investment in neurotechnology and innovation or fast-tracking therapeutics and diagnostics to curb these costs. During the current COVID-19 pandemic, SBMT, through this paper, intends to showcase the importance of worldwide collaborations to reduce the population's economic and health burden, specifically regarding neurological/brain, spine, and mental disorders.
Collapse
Affiliation(s)
- Kevin Morris
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Mohammad Nami
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Iran.,Middle East Brain + Initiative, Los Angeles, CA, USA.,Neuroscience Center, Instituto de Investigaciones Científicas Servicios de Alta Tecnología, City of Knowledge, Panama City, Panama
| | - Joe F Bolanos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Maria A Lobo
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Melody Sadri-Naini
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - John Fiallos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Gilberto E Sanchez
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Teshia Bustos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Nikita Chintam
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Marco Amaya
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Susanne E Strand
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Alero Mayuku-Dore
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Indira Sakibova
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Grace Maria Nicole Biso
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Alejandro DeFilippis
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Daniela Bravo
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Nevzat Tarhan
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Carsten Claussen
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Fraunhofer-Institute for Translational Research and Pharmacology, Hamburg, Germany
| | - Alejandro Mercado
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neurosurgery, Hospital Military Regional Mendoza, Mendoza, Argentina
| | | | - Louis Yuge
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Division of Bio-Environment Adaptation Sciences, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.,Cell Therapy Venture Company, Space Bio-Laboratories, Hiroshima, Japan
| | - Shigeo Okabe
- Brain Medical Science Collaboration Division, RIKEN Center for Brain Science Institution and Department: Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | | | - Konstantin Kotliar
- Department of Biomedical Engineering, Aachen University of Applied Sciences, Aachen, Germany
| | - Christina Sadowsky
- International Center for Spinal Cord Injury, Kennedy Krieger Institute-Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - P Sarat Chandra
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | | | - Vasileios Katsaros
- Department of Advanced Imaging Modalities, MRI Unit, General Anti-Cancer and Oncological Hospital of Athens "St. Savvas", Athens, Greece.,Departments of Neurosurgery and Neurology, National and Kapodistrian University of Athens, Athens, Greece.,Department of Neuroradiology, University College of London, London, UK
| | - Brian Mehling
- T-Neuro Pharma, Inc., Albuquerque, NM, USA.,StemVax LLC, Chesterland, OH, USA
| | - Maryam Noroozian
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Cognitive Neurology and Neuropsychiatry Division, Department of Psychiatry, Tehran University of Medical Sciences, Tehran, Iran
| | - Kazem Abbasioun
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Amirjamshidi
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholam-Ali Hossein-Zadeh
- Middle East Brain + Initiative, Los Angeles, CA, USA.,National Brain Mapping Laboratory, Tehran, Iran
| | - Faridedin Naraghi
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Iranian Society for Brain Mapping & Therapeutics, Tehran, Iran
| | - Mojtaba Barzegar
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Intelligent Quantitative Bio-Medical Imaging, Tehran, Iran, and Medical Physics Department, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali A Asadi-Pooya
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Epilepsy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Jefferson Comprehensive Epilepsy Center, Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sajad Sahab-Negah
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad Iran.,Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
| | - Saeid Sadeghian
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Pediatric Neurology, Golestan Medical, Educational, and Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Nesrin Dilbaz
- Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Namath Hussain
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Zoltan Mari
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, NV, USA
| | - Robert W Thatcher
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Applied Neuroscience Research Institute, St. Petersburg, FL, USA.,Applied Neuroscience, Inc., St. Petersburg, Fl, USA
| | - Daniel Sipple
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Fraunhofer-Institute for Translational Research and Pharmacology, Hamburg, Germany
| | - Kuldip Sidhu
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,CK Cell Technologies Pty Ltd, Norwest, NSW, Australia.,Faculty of Medicine, Centre for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia.,Society for Brain Mapping and Therapeutics-Sydney, Sydney, NSW, Australia
| | | | - Francesco Costa
- IRCCS Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | | | - Ted Berger
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,USC Department of Biomedical Engineering, Los Angeles, CA, USA
| | - Deborah Zelinsky
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,The Mind-Eye Institute, Northbrook, IL, USA
| | - Christopher J Wheeler
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Social Science Research Institute, Tokai University, Shibuya City, Tokyo, Japan
| | - J Wesson Ashford
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Psychiatry & Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Reinhard Schulte
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - M A Nezami
- Sahel Oncology LLC, Newport Beach, CA, USA
| | - Harry Kloor
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Beyond Imagination, Los Angeles, CA, USA
| | - Aaron Filler
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Institute for Nerve Medicine, Santa Monica, CA, USA
| | - Dawn S Eliashiv
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neurology, UCLA-David Geffen School of Medicine, Los Angeles, CA, USA
| | - Dipen Sinha
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA
| | - Antonio A F DeSalles
- Department of Neurosurgery, UCLA David Geffen School of Medicine, Los Angeles CA, USA.,NeuroSapiens - Rede D'Or São Luiz, Sao Paulo, Brazil.,Society for Brain Mapping and Therapeutics-Brazil, Sao Paulo, Brazil
| | - Venkatraman Sadanand
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Sergey Suchkov
- Applied Neuroscience, Inc., St. Petersburg, Fl, USA.,Society for Brain Mapping and Therapeutics-Russia, Moscow, Russia
| | - Ken Green
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Barish Metin
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Robert Hariri
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Celularity Corporation, Warren, NJ, USA.,Weill Cornell School of Medicine, Department of Neurosurgery, New York, NY, USA
| | - Jason Cormier
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Blue Horizon International, Hackensack, NJ, USA
| | - Vicky Yamamoto
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,USC Keck School of Medicine, The USC Caruso Department of Otolaryngology-Head and Neck Surgery, Los Angeles, CA, USA.,USC-Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Babak Kateb
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA.,National Center for Nanobioelectronics, Los Angeles, CA, USA.,Brain Technology and Innovation Park, Los Angeles, CA, USA
| |
Collapse
|
13
|
Tamada K, Fukumoto K, Toya T, Nakai N, Awasthi JR, Tanaka S, Okabe S, Spitz F, Saitow F, Suzuki H, Takumi T. Genetic dissection identifies Necdin as a driver gene in a mouse model of paternal 15q duplications. Nat Commun 2021; 12:4056. [PMID: 34210967 PMCID: PMC8249516 DOI: 10.1038/s41467-021-24359-3] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
Maternally inherited duplication of chromosome 15q11-q13 (Dup15q) is a pathogenic copy number variation (CNV) associated with autism spectrum disorder (ASD). Recently, paternally derived duplication has also been shown to contribute to the development of ASD. The molecular mechanism underlying paternal Dup15q remains unclear. Here, we conduct genetic and overexpression-based screening and identify Necdin (Ndn) as a driver gene for paternal Dup15q resulting in the development of ASD-like phenotypes in mice. An excess amount of Ndn results in enhanced spine formation and density as well as hyperexcitability of cortical pyramidal neurons. We generate 15q dupΔNdn mice with a normalized copy number of Ndn by excising its one copy from Dup15q mice using a CRISPR-Cas9 system. 15q dupΔNdn mice do not show ASD-like phenotypes and show dendritic spine dynamics and cortical excitatory-inhibitory balance similar to wild type animals. Our study provides an insight into the role of Ndn in paternal 15q duplication and a mouse model of paternal Dup15q syndrome.
Collapse
Affiliation(s)
- Kota Tamada
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.257022.00000 0000 8711 3200Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima, Japan ,grid.31432.370000 0001 1092 3077Department of Physiology and Cell Biology, Kobe University School of Medicine, Chuo, Kobe, Japan
| | - Keita Fukumoto
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.257022.00000 0000 8711 3200Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima, Japan
| | - Tsuyoshi Toya
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.26091.3c0000 0004 1936 9959Graduate School of Pharmaceutical Sciences, Keio University, Minato, Tokyo, Japan
| | - Nobuhiro Nakai
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.257022.00000 0000 8711 3200Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima, Japan ,grid.31432.370000 0001 1092 3077Department of Physiology and Cell Biology, Kobe University School of Medicine, Chuo, Kobe, Japan
| | - Janak R. Awasthi
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.263023.60000 0001 0703 3735Graduate School of Science and Engineering, Saitama University, Sakura, Saitama, Japan
| | - Shinji Tanaka
- grid.26999.3d0000 0001 2151 536XDepartment of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Shigeo Okabe
- grid.26999.3d0000 0001 2151 536XDepartment of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - François Spitz
- grid.170205.10000 0004 1936 7822Department of Human Genetics, University of Chicago, Chicago, IL USA
| | - Fumihito Saitow
- grid.410821.e0000 0001 2173 8328Department of Pharmacology, Garduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo, Japan
| | - Hidenori Suzuki
- grid.410821.e0000 0001 2173 8328Department of Pharmacology, Garduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo, Japan
| | - Toru Takumi
- grid.474690.8RIKEN Brain Science Institute, Wako, Saitama, Japan ,grid.257022.00000 0000 8711 3200Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima, Japan ,grid.31432.370000 0001 1092 3077Department of Physiology and Cell Biology, Kobe University School of Medicine, Chuo, Kobe, Japan ,grid.263023.60000 0001 0703 3735Graduate School of Science and Engineering, Saitama University, Sakura, Saitama, Japan
| |
Collapse
|
14
|
Oguma N, Takahashi K, Okabe S, Ohta T. Inhibitory effect of polysulfide, an endogenous sulfur compound, on oxidative stress-induced TRPA1 activation. Neurosci Lett 2021; 757:135982. [PMID: 34023406 DOI: 10.1016/j.neulet.2021.135982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/29/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022]
Abstract
Polysulfide (PS), an endogenous sulfur compound, generated by oxidation of hydrogen sulfide, has a stimulatory action on the nociceptive TRPA1 channel. TRPA1 is also activated by reactive oxygen species such as hydrogen peroxide (H2O2) produced during inflammation. Here, we examined the effect of PS on H2O2-induced responses in native and heterologously expressed TRPA1 using a cell-based calcium assay. We also carried out behavioral experiments in vivo. In mouse sensory neurons, H2O2 elicited early TRPA1-dependent and late TRPA1-independent increases of [Ca2+]i. The former was suppressed by the pretreatment with PS. In cells heterologously expressed TRPA1, PS suppressed [Ca2+]i responses to H2O2. Simultaneous measurement of [Ca2+]i and the intracellular PS level revealed that scavenging effect of PS was not related to the inhibitory effect. Removal of extracellular Ca2+, a calmodulin inhibitor and dithiothreitol attenuated the inhibitory effect of PS. Pretreatment with PS diminished nociceptive behaviors induced by H2O2. The present data suggest that PS suppresses oxidative stress-induced TRPA1 activation due to cysteine modification and Ca2+/calmodulin signaling. Thus, endogenous sulfurs may have regulatory roles in nociception via functional changes in TRPA1 under inflammatory conditions.
Collapse
Affiliation(s)
- N Oguma
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - K Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan; Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - S Okabe
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - T Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan; Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan.
| |
Collapse
|
15
|
Obashi K, Taraska JW, Okabe S. The role of molecular diffusion within dendritic spines in synaptic function. J Gen Physiol 2021; 153:e202012814. [PMID: 33720306 PMCID: PMC7967910 DOI: 10.1085/jgp.202012814] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/16/2021] [Indexed: 12/21/2022] Open
Abstract
Spines are tiny nanoscale protrusions from dendrites of neurons. In the cortex and hippocampus, most of the excitatory postsynaptic sites reside in spines. The bulbous spine head is connected to the dendritic shaft by a thin membranous neck. Because the neck is narrow, spine heads are thought to function as biochemically independent signaling compartments. Thus, dynamic changes in the composition, distribution, mobility, conformations, and signaling properties of molecules contained within spines can account for much of the molecular basis of postsynaptic function and regulation. A major factor in controlling these changes is the diffusional properties of proteins within this small compartment. Advances in measurement techniques using fluorescence microscopy now make it possible to measure molecular diffusion within single dendritic spines directly. Here, we review the regulatory mechanisms of diffusion in spines by local intra-spine architecture and discuss their implications for neuronal signaling and synaptic plasticity.
Collapse
Affiliation(s)
- Kazuki Obashi
- Biochemistry and Biophysics Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Justin W. Taraska
- Biochemistry and Biophysics Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
16
|
Yoshida T, Yamagata A, Imai A, Kim J, Izumi H, Nakashima S, Shiroshima T, Maeda A, Iwasawa-Okamoto S, Azechi K, Osaka F, Saitoh T, Maenaka K, Shimada T, Fukata Y, Fukata M, Matsumoto J, Nishijo H, Takao K, Tanaka S, Okabe S, Tabuchi K, Uemura T, Mishina M, Mori H, Fukai S. Canonical versus non-canonical transsynaptic signaling of neuroligin 3 tunes development of sociality in mice. Nat Commun 2021; 12:1848. [PMID: 33758193 PMCID: PMC7988105 DOI: 10.1038/s41467-021-22059-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 07/30/2020] [Accepted: 02/25/2021] [Indexed: 12/31/2022] Open
Abstract
Neuroligin 3 (NLGN3) and neurexins (NRXNs) constitute a canonical transsynaptic cell-adhesion pair, which has been implicated in autism. In autism spectrum disorder (ASD) development of sociality can be impaired. However, the molecular mechanism underlying NLGN3-mediated social development is unclear. Here, we identify non-canonical interactions between NLGN3 and protein tyrosine phosphatase δ (PTPδ) splice variants, competing with NRXN binding. NLGN3-PTPδ complex structure revealed a splicing-dependent interaction mode and competition mechanism between PTPδ and NRXNs. Mice carrying a NLGN3 mutation that selectively impairs NLGN3-NRXN interaction show increased sociability, whereas mice where the NLGN3-PTPδ interaction is impaired exhibit impaired social behavior and enhanced motor learning, with imbalance in excitatory/inhibitory synaptic protein expressions, as reported in the Nlgn3 R451C autism model. At neuronal level, the autism-related Nlgn3 R451C mutation causes selective impairment in the non-canonical pathway. Our findings suggest that canonical and non-canonical NLGN3 pathways compete and regulate the development of sociality.
Collapse
Affiliation(s)
- Tomoyuki Yoshida
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan. .,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan. .,JST PRESTO, Saitama, Japan.
| | | | - Ayako Imai
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Juhyon Kim
- Division of Bio-Information Engineering, Faculty of Engineering, University of Toyama, Toyama, Japan
| | - Hironori Izumi
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Shogo Nakashima
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Tomoko Shiroshima
- Department of Anatomy, Kitasato University School of Medicine, Kanagawa, Japan
| | - Asami Maeda
- Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shiho Iwasawa-Okamoto
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Kenji Azechi
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Fumina Osaka
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Takashi Saitoh
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Katsumi Maenaka
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.,Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Takashi Shimada
- SHIMADZU Bioscience Research Partnership, Innovation Center, Shimadzu Scientific Instruments, Bothell, WA, USA
| | - Yuko Fukata
- Division of Membrane Physiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Aichi, Japan
| | - Masaki Fukata
- Division of Membrane Physiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Aichi, Japan
| | - Jumpei Matsumoto
- Research Center for Idling Brain Science, University of Toyama, Toyama, Japan.,Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Hisao Nishijo
- Research Center for Idling Brain Science, University of Toyama, Toyama, Japan.,Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Keizo Takao
- Research Center for Idling Brain Science, University of Toyama, Toyama, Japan.,Life Science Research Center, University of Toyama, Toyama, Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Katsuhiko Tabuchi
- JST PRESTO, Saitama, Japan.,Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano, Japan.,Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Takeshi Uemura
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan.,Division of Gene Research, Research Center for Supports to Advanced Science, Shinshu University, Nagano, Japan
| | - Masayoshi Mishina
- Brain Science Laboratory, Research Organization of Science and Technology, Ritsumeikan University, Shiga, Japan
| | - Hisashi Mori
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Shuya Fukai
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan.
| |
Collapse
|
17
|
Okabe S. Recent advances in computational methods for measurement of dendritic spines imaged by light microscopy. Microscopy (Oxf) 2021; 69:196-213. [PMID: 32244257 DOI: 10.1093/jmicro/dfaa016] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 02/04/2020] [Accepted: 03/23/2020] [Indexed: 12/13/2022] Open
Abstract
Dendritic spines are small protrusions that receive most of the excitatory inputs to the pyramidal neurons in the neocortex and the hippocampus. Excitatory neural circuits in the neocortex and hippocampus are important for experience-dependent changes in brain functions, including postnatal sensory refinement and memory formation. Several lines of evidence indicate that synaptic efficacy is correlated with spine size and structure. Hence, precise and accurate measurement of spine morphology is important for evaluation of neural circuit function and plasticity. Recent advances in light microscopy and image analysis techniques have opened the way toward a full description of spine nanostructure. In addition, large datasets of spine nanostructure can be effectively analyzed using machine learning techniques and other mathematical approaches, and recent advances in super-resolution imaging allow researchers to analyze spine structure at an unprecedented level of precision. This review summarizes computational methods that can effectively identify, segment and quantitate dendritic spines in either 2D or 3D imaging. Nanoscale analysis of spine structure and dynamics, combined with new mathematical approaches, will facilitate our understanding of spine functions in physiological and pathological conditions.
Collapse
Affiliation(s)
- Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| |
Collapse
|
18
|
Tanaka S, Masuda Y, Harada A, Okabe S. Impaired actin dynamics and suppression of Shank2-mediated spine enlargement in cortactin knockout mice. ACTA ACUST UNITED AC 2020; 69:44-52. [PMID: 31990031 DOI: 10.1093/jmicro/dfaa001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 01/05/2020] [Accepted: 01/06/2020] [Indexed: 12/22/2022]
Abstract
Cortactin regulates actin polymerization and stabilizes branched actin network. In neurons, cortactin is enriched in dendritic spines that contain abundant actin polymers. To explore the function of cortactin in dendritic spines, we examined spine morphology and dynamics in cultured neurons taken from cortactin knockout (KO) mice. Histological analysis revealed that the density and morphology of dendritic spines were not significantly different between wild-type (WT) and cortactin KO neurons. Time-lapse imaging of hippocampal slice cultures showed that the extent of spine volume change was similar between WT and cortactin KO neurons. Despite little effect of cortactin deletion on spine morphology and dynamics, actin turnover in dendritic spines was accelerated in cortactin KO neurons. Furthermore, we detected a suppressive effect of cortactin KO on spine head size under the condition of excessive spine enlargement induced by overexpression of a prominent postsynaptic density protein Shank2. These results suggest that cortactin may have a role in maintaining actin organization by stabilizing actin filaments near the postsynaptic density.
Collapse
Affiliation(s)
- Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasutaka Masuda
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akihiro Harada
- Department of Cell Biology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
19
|
Adams A, Albin S, Amunts K, Asakawa T, Bernard A, Bjaalie JG, Chakli K, Deshler JO, De Koninck Y, Ebell CJ, Egan G, Hale ME, Häusser M, Jeong SJ, Illes J, Lanyon L, Li P, Li Y, Magistretti P, McMahon A, Montojo C, Ohtsuka T, Okabe S, Okano H, Pei G, Pouget A, Reindorp J, Richards LJ, Rommelfanger KS, Sajda P, Scobie KN, Suh PG, Tanaka K, Thiels E, Valdes-Sosa PA, Welchman AE, White S, Wilson G, Yuste R, Zhang X, Zheng J. International Brain Initiative: An Innovative Framework for Coordinated Global Brain Research Efforts. Neuron 2020; 105:947. [DOI: 10.1016/j.neuron.2020.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
20
|
Iwasaki K, Obashi K, Okabe S. Vasodilator‐stimulated phosphoprotein (VASP) is recruited into dendritic spines via G‐actin‐dependent mechanism and contributes to spine enlargement and stabilization. Eur J Neurosci 2019; 51:806-821. [DOI: 10.1111/ejn.14634] [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] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 11/11/2019] [Accepted: 11/26/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Kanako Iwasaki
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Kazuki Obashi
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| |
Collapse
|
21
|
Sadato N, Morita K, Kasai K, Fukushi T, Nakamura K, Nakazawa E, Okano H, Okabe S. Neuroethical Issues of the Brain/MINDS Project of Japan. Neuron 2019; 101:385-389. [PMID: 30731063 DOI: 10.1016/j.neuron.2019.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 12/19/2018] [Accepted: 12/30/2018] [Indexed: 11/16/2022]
Abstract
The Brain/MINDS project aims to further understand the human brain and neuropsychiatric disorders through "translatable" biomarkers. Here, we describe the neuroethical issues of the project that have arisen from clinical data collection and the use of biological models of neuropsychiatric disorders.
Collapse
Affiliation(s)
- Norihiro Sadato
- Department of System Neuroscience, National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan.
| | - Kentaro Morita
- Department of Neuropsychiatry, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Kiyoto Kasai
- Department of Neuropsychiatry, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Tamami Fukushi
- Department of Research Infrastructure, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda, Tokyo 100-0004, Japan
| | - Katsuki Nakamura
- Primate Research Institute, Kyoto University, 41-2, Kanrin, Inuyama, Aichi 484-8506, Japan
| | - Eisuke Nakazawa
- Department of Biomedical Ethics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| |
Collapse
|
22
|
Takahashi-Nakazato A, Parajuli LK, Iwasaki H, Tanaka S, Okabe S. Ultrastructural Observation of Glutamatergic Synapses by Focused Ion Beam Scanning Electron Microscopy (FIB/SEM). Methods Mol Biol 2019; 1941:17-27. [PMID: 30707424 DOI: 10.1007/978-1-4939-9077-1_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A thorough understanding of the synaptic ultrastructure is necessary to bridge our current knowledge gap about the relationship between neuronal structure and function. Recent development of focused ion beam scanning electron microscopy (FIB/SEM) has made it possible to image neuronal structures with high speed and efficiency. Here, we present our routine protocol for correlative two-photon microscopy and FIB/SEM imaging of glutamatergic synapses. Femtosecond-pulsed near-infrared laser was used to create fiducial marks around the dendrite of interest in aldehyde-fixed tissues. Thereafter, samples were subjected to en bloc staining with rOTO (reduced osmium tetroxide-thiocarbohydrazide-osmium tetroxide), followed by lead aspartate and uranyl acetate to enhance tissue contrast. Reliable detection of postsynaptic density (PSD) and plasma membrane contours by the sample preparation protocol optimized for FIB/SEM allows us to precisely evaluate morphological features that shape glutamatergic synaptic transmission.
Collapse
Affiliation(s)
- Ai Takahashi-Nakazato
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,CREST, JST, Tokyo, Japan
| | - Laxmi Kumar Parajuli
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,CREST, JST, Tokyo, Japan
| | - Hirohide Iwasaki
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,CREST, JST, Tokyo, Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,CREST, JST, Tokyo, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. .,CREST, JST, Tokyo, Japan.
| |
Collapse
|
23
|
Iguchi R, Tanaka S, Okabe S. Neonatal social isolation increases the proportion of the immature spines in the layer 2/3 pyramidal neurons of the somatosensory cortex. Neurosci Res 2019; 154:27-34. [PMID: 31226269 DOI: 10.1016/j.neures.2019.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 05/17/2019] [Accepted: 05/20/2019] [Indexed: 11/29/2022]
Abstract
Social isolation during the juvenile period is postulated to leave specific sequelae, such as attention deficits and emotion recognition. Miswiring of the cortical neuronal circuit during postnatal development may underlie such behavioral impairments, but the details of the circuit-level impairment associated with social isolation have not yet been clarified. In this study, we evaluated the possibility that environmental factors may induce alternation in spine characteristics and dynamics. We isolated mice from the mother and siblings from postnatal day 7 to 11 for 6 h per day. Both dynamics and structural properties of spines in the layer 2/3 pyramidal neurons of the somatosensory cortex were measured at postnatal 3 weeks by in vivo two-photon microscopy. We found decrease in the ratio of PSD-95-positive dendritic spines in the mice after social isolation. These mice did not show alteration in spine dynamics. Those results suggest that the neonatal social isolation results in less mature spines, with normal rate of their turnover, which is distinct from spine phenotype seen in multiple models of autism spectrum disorders.
Collapse
Affiliation(s)
- Risa Iguchi
- Department of Cellular Neurobiology Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033 Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033 Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033 Japan.
| |
Collapse
|
24
|
Li J, Sekine‐Aizawa Y, Ebrahimi S, Tanaka S, Okabe S. Tumor suppressor protein
CYLD
regulates morphogenesis of dendrites and spines. Eur J Neurosci 2019; 50:2722-2739. [DOI: 10.1111/ejn.14421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 04/01/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Jun Li
- Department of Cellular Neurobiology Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Yoko Sekine‐Aizawa
- Department of Cellular Neurobiology Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Saman Ebrahimi
- Department of Cellular Neurobiology Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology Graduate School of Medicine University of Tokyo Tokyo Japan
| |
Collapse
|
25
|
Sato Y, Okabe S. Nano-scale analysis of synapse morphology in an autism mouse model with 15q11-13 copy number variation using focused ion beam milling and scanning electron microscopy. Microscopy (Oxf) 2019; 68:122-132. [PMID: 30371805 DOI: 10.1093/jmicro/dfy128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/26/2018] [Accepted: 10/09/2018] [Indexed: 02/07/2023] Open
Abstract
Circuit-level alternations in patients of autism spectrum disorder (ASD) is under active investigation and detailed characterization of synapse morphology in ASD model mice should be informative. We utilized focused ion beam milling and scanning electron microscopy (FIB-SEM) to obtain three-dimensional images of synapses in the layer 2/3 of the somatosensory cortex from a mouse model for ASD with human 15q11-13 chromosomal duplication (15q dup mice). We found a trend of higher spine density and a higher fraction of astrocytic contact with both spine and shaft synapses in 15q dup mice. Measurement of spine synapse structure indicated that the size of the post-synaptic density (PSD), spine head volume, spine head width and spine neck width were smaller in 15q dup mice. Categorization of spine synapses into five classes suggested a trend of less frequent mushroom spines in 15q dup mice. These results suggest relative increase in excitatory synapses with immature morphology but more astrocytic contacts in 15q dup mice, which may be linked to enhanced synapse turnover seen in ASD mouse models.
Collapse
Affiliation(s)
- Yuka Sato
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| |
Collapse
|
26
|
Obashi K, Matsuda A, Inoue Y, Okabe S. Precise Temporal Regulation of Molecular Diffusion within Dendritic Spines by Actin Polymers during Structural Plasticity. Cell Rep 2019; 27:1503-1515.e8. [DOI: 10.1016/j.celrep.2019.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/22/2019] [Accepted: 03/29/2019] [Indexed: 10/26/2022] Open
|
27
|
Koebis M, Urata S, Shinoda Y, Okabe S, Yamasoba T, Nakao K, Aiba A, Furuichi T. LAMP5 in presynaptic inhibitory terminals in the hindbrain and spinal cord: a role in startle response and auditory processing. Mol Brain 2019; 12:20. [PMID: 30867010 PMCID: PMC6416879 DOI: 10.1186/s13041-019-0437-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 02/25/2019] [Indexed: 11/10/2022] Open
Abstract
Lysosome-associated membrane protein 5 (LAMP5) is a mammalian ortholog of the Caenorhabditis elegans protein, UNC-46, which functions as a sorting factor to localize the vesicular GABA transporter UNC-47 to synaptic vesicles. In the mouse forebrain, LAMP5 is expressed in a subpopulation of GABAergic neurons in the olfactory bulb and the striato-nigral system, where it is required for fine-tuning of GABAergic synaptic transmission. Here we focus on the prominent expression of LAMP5 in the brainstem and spinal cord and suggest a role for LAMP5 in these brain regions. LAMP5 was highly expressed in several brainstem nuclei involved with auditory processing including the cochlear nuclei, the superior olivary complex, nuclei of the lateral lemniscus and grey matter in the spinal cord. It was localized exclusively in inhibitory synaptic terminals, as has been reported in the forebrain. In the absence of LAMP5, localization of the vesicular inhibitory amino acid transporter (VIAAT) was unaltered in the lateral superior olive and the ventral cochlear nuclei, arguing against a conserved role for LAMP5 in trafficking VIAAT. Lamp5 knockout mice showed no overt behavioral abnormality but an increased startle response to auditory and tactile stimuli. In addition, LAMP5 deficiency led to a larger intensity-dependent increase of wave I, II and V peak amplitude of auditory brainstem response. Our results indicate that LAMP5 plays a pivotal role in sensorimotor processing in the brainstem and spinal cord.
Collapse
Affiliation(s)
- Michinori Koebis
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Shinji Urata
- Department of Otolaryngology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655 Japan
| | - Yo Shinoda
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392 Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Tatsuya Yamasoba
- Department of Otolaryngology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655 Japan
| | - Kazuki Nakao
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Atsu Aiba
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Teiichi Furuichi
- Department of Applied Biological Sciences, Tokyo University of Science, Chiba, 278-8510 Japan
| |
Collapse
|
28
|
Abstract
Neuroscience is enjoying a renaissance of discovery due in large part to the implementation of next-generation molecular technologies. The advent of genetically encoded tools has complemented existing methods and provided researchers the opportunity to examine the nervous system with unprecedented precision and to reveal facets of neural function at multiple scales. The weight of these discoveries, however, has been technique-driven from a small number of species amenable to the most advanced gene-editing technologies. To deepen interpretation and build on these breakthroughs, an understanding of nervous system evolution and diversity are critical. Evolutionary change integrates advantageous variants of features into lineages, but is also constrained by pre-existing organization and function. Ultimately, each species’ neural architecture comprises both properties that are species-specific and those that are retained and shared. Understanding the evolutionary history of a nervous system provides interpretive power when examining relationships between brain structure and function. The exceptional diversity of nervous systems and their unique or unusual features can also be leveraged to advance research by providing opportunities to ask new questions and interpret findings that are not accessible in individual species. As new genetic and molecular technologies are added to the experimental toolkits utilized in diverse taxa, the field is at a key juncture to revisit the significance of evolutionary and comparative approaches for next-generation neuroscience as a foundational framework for understanding fundamental principles of neural function.
Collapse
Affiliation(s)
- Cory T Miller
- Cortical Systems and Behavior Laboratory, Neurosciences Graduate Program, University of California, San Diego, San Diego, CA, United States
| | - Melina E Hale
- Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, United States
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan.,Laboratory for Marmoset Neural Architecture, RIKEN Center for Brain Science (CBS), Wako, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine and Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Partha Mitra
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| |
Collapse
|
29
|
Okabe S. Microscopy in 2019 with a renewed editorial board. Microscopy (Oxf) 2019. [DOI: 10.1093/jmicro/dfz005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shigeo Okabe
- Editor-in-Chief, MicroscopyDepartment of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
30
|
Urata S, Iida T, Yamamoto M, Mizushima Y, Fujimoto C, Matsumoto Y, Yamasoba T, Okabe S. Cellular cartography of the organ of Corti based on optical tissue clearing and machine learning. eLife 2019; 8:40946. [PMID: 30657453 PMCID: PMC6338463 DOI: 10.7554/elife.40946] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 01/05/2019] [Indexed: 12/20/2022] Open
Abstract
The highly organized spatial arrangement of sensory hair cells in the organ of Corti is essential for inner ear function. Here, we report a new analytical pipeline, based on optical clearing of tissue, for the construction of a single-cell resolution map of the organ of Corti. A sorbitol-based optical clearing method enabled imaging of the entire cochlea at subcellular resolution. High-fidelity detection and analysis of all hair cell positions along the entire longitudinal axis of the organ of Corti were performed automatically by machine learning–based pattern recognition. Application of this method to samples from young, adult, and noise-exposed mice extracted essential information regarding cellular pathology, including longitudinal and radial spatial characteristics of cell loss, implying that multiple mechanisms underlie clustered cell loss. Our method of cellular mapping is effective for system-level phenotyping of the organ of Corti under both physiological and pathological conditions.
Collapse
Affiliation(s)
- Shinji Urata
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tadatsune Iida
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masamichi Yamamoto
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yu Mizushima
- Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Chisato Fujimoto
- Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yu Matsumoto
- Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tatsuya Yamasoba
- Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
31
|
Iida T, Tanaka S, Okabe S. Spatial impact of microglial distribution on dynamics of dendritic spines. Eur J Neurosci 2019; 49:1400-1417. [DOI: 10.1111/ejn.14325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/10/2018] [Accepted: 12/20/2018] [Indexed: 01/31/2023]
Affiliation(s)
- Tadatsune Iida
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology Graduate School of Medicine The University of Tokyo Tokyo Japan
| |
Collapse
|
32
|
Ito H, Kawamata Y, Kamiya M, Tsuda‐Sakurai K, Tanaka S, Ueno T, Komatsu T, Hanaoka K, Okabe S, Miura M, Urano Y. Red‐Shifted Fluorogenic Substrate for Detection of
lac
Z‐Positive Cells in Living Tissue with Single‐Cell Resolution. Angew Chem Int Ed Engl 2018; 57:15702-15706. [DOI: 10.1002/anie.201808670] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/22/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Hiroki Ito
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yu Kawamata
- Graduate School of Sciences Kyoto University Sakyo Kyoto 606-8502 Japan
- Present Addresses: Department of Chemistry The Scripps Research Institute USA
| | - Mako Kamiya
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- PRESTO (Japan) Science and Technology Agency 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| | - Kayoko Tsuda‐Sakurai
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shinji Tanaka
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tasuku Ueno
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Toru Komatsu
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Kenjiro Hanaoka
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shigeo Okabe
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Miura
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yasuteru Urano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- CREST (Japan) Agency for Medical Research and Development (AMED) 1-7-1 Otemachi, Chiyoda-ku Tokyo 100-0004 Japan
| |
Collapse
|
33
|
Ito H, Kawamata Y, Kamiya M, Tsuda‐Sakurai K, Tanaka S, Ueno T, Komatsu T, Hanaoka K, Okabe S, Miura M, Urano Y. Red‐Shifted Fluorogenic Substrate for Detection of
lac
Z‐Positive Cells in Living Tissue with Single‐Cell Resolution. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808670] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroki Ito
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yu Kawamata
- Graduate School of Sciences Kyoto University Sakyo Kyoto 606-8502 Japan
- Present Addresses: Department of Chemistry The Scripps Research Institute USA
| | - Mako Kamiya
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- PRESTO (Japan) Science and Technology Agency 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| | - Kayoko Tsuda‐Sakurai
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shinji Tanaka
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tasuku Ueno
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Toru Komatsu
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Kenjiro Hanaoka
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shigeo Okabe
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Miura
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yasuteru Urano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Graduate School of Medicine The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- CREST (Japan) Agency for Medical Research and Development (AMED) 1-7-1 Otemachi, Chiyoda-ku Tokyo 100-0004 Japan
| |
Collapse
|
34
|
Nakayama H, Abe M, Morimoto C, Iida T, Okabe S, Sakimura K, Hashimoto K. Microglia permit climbing fiber elimination by promoting GABAergic inhibition in the developing cerebellum. Nat Commun 2018; 9:2830. [PMID: 30026565 PMCID: PMC6053401 DOI: 10.1038/s41467-018-05100-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [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: 11/03/2017] [Accepted: 05/23/2018] [Indexed: 01/01/2023] Open
Abstract
Circuit refinement during postnatal development is finely regulated by neuron–neuron interactions. Recent studies suggest participation of microglia in this process but it is unclear how microglia cooperatively act with neuronal mechanisms. To examine roles of microglia, we ablate microglia by microglia-selective deletion of colony-stimulating factor 1 receptor (Csf1r) by crossing floxed-Csf1r and Iba1-iCre mice (Csf1r-cKO). In Csf1r-cKO mice, refinement of climbing fiber (CF) to Purkinje cell (PC) innervation after postnatal day 10 (P10)–P12 is severely impaired. However, there is no clear morphological evidence suggesting massive engulfment of CFs by microglia. In Csf1r-cKO mice, inhibitory synaptic transmission is impaired and CF elimination is restored by diazepam, which suggests that impairment of CF elimination is caused by a defect of GABAergic inhibition on PCs, a prerequisite for CF elimination. These results indicate that microglia primarily promote GABAergic inhibition and secondarily facilitate the mechanism for CF elimination inherent in PCs. In the mammalian cerebellum, surplus synapses between climbing fibers (CF) and Purkinje cells (PC) are developmentally pruned. Here, Nakayama and colleagues show that ablation of microglia impairs pruning of CF-PC synapses because of dysfunction of GABAergic inhibition prerequisite for pruning.
Collapse
Affiliation(s)
- Hisako Nakayama
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.,Department of Physiology, School of Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Sinjuku-ku, Tokyo, 162-8666, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8585, Japan.,Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8585, Japan
| | - Chie Morimoto
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.,Department of Psychosocial Rehabilitation Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tadatsune Iida
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8585, Japan.,Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8585, Japan
| | - Kouichi Hashimoto
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| |
Collapse
|
35
|
Chen S, Weitemier AZ, Zeng X, He L, Wang X, Tao Y, Huang AJY, Hashimotodani Y, Kano M, Iwasaki H, Parajuli LK, Okabe S, Teh DBL, All AH, Tsutsui-Kimura I, Tanaka KF, Liu X, McHugh TJ. Near-infrared deep brain stimulation via upconversion nanoparticle-mediated optogenetics. Science 2018; 359:679-684. [PMID: 29439241 DOI: 10.1126/science.aaq1144] [Citation(s) in RCA: 589] [Impact Index Per Article: 98.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/07/2017] [Indexed: 12/20/2022]
Abstract
Optogenetics has revolutionized the experimental interrogation of neural circuits and holds promise for the treatment of neurological disorders. It is limited, however, because visible light cannot penetrate deep inside brain tissue. Upconversion nanoparticles (UCNPs) absorb tissue-penetrating near-infrared (NIR) light and emit wavelength-specific visible light. Here, we demonstrate that molecularly tailored UCNPs can serve as optogenetic actuators of transcranial NIR light to stimulate deep brain neurons. Transcranial NIR UCNP-mediated optogenetics evoked dopamine release from genetically tagged neurons in the ventral tegmental area, induced brain oscillations through activation of inhibitory neurons in the medial septum, silenced seizure by inhibition of hippocampal excitatory cells, and triggered memory recall. UCNP technology will enable less-invasive optical neuronal activity manipulation with the potential for remote therapy.
Collapse
Affiliation(s)
- Shuo Chen
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan.
| | - Adam Z Weitemier
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan
| | - Xiao Zeng
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Linmeng He
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan
| | - Xiyu Wang
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan
| | - Yanqiu Tao
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan
| | - Arthur J Y Huang
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan
| | - Yuki Hashimotodani
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Kano
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,International Research Center for Neurointellegence (WPI), University of Tokyo Institute for Advanced Studies, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hirohide Iwasaki
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Laxmi Kumar Parajuli
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Daniel B Loong Teh
- Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, Singapore 117456, Singapore
| | - Angelo H All
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Iku Tsutsui-Kimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Kenji F Tanaka
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore. .,Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore 117602, Singapore
| | - Thomas J McHugh
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Wakoshi, Saitama 351-0198, Japan. .,Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
36
|
Higashi T, Tanaka S, Iida T, Okabe S. Synapse Elimination Triggered by BMP4 Exocytosis and Presynaptic BMP Receptor Activation. Cell Rep 2018; 22:919-929. [DOI: 10.1016/j.celrep.2017.12.101] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 11/03/2017] [Accepted: 12/26/2017] [Indexed: 11/16/2022] Open
|
37
|
Matoba M, Okabe S. LS-1Current trends in Academic Publishing in the Field of Microscopy. Microscopy (Oxf) 2017. [DOI: 10.1093/jmicro/dfx059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Miki Matoba
- Global Academic Publishing, Oxford University Press, and
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo
| |
Collapse
|
38
|
Sano D, Tazawa M, Inaba M, Kadoya S, Watanabe R, Miura T, Kitajima M, Okabe S. Selection of cellular genetic markers for the detection of infectious poliovirus. J Appl Microbiol 2017; 124:1001-1007. [PMID: 29078036 DOI: 10.1111/jam.13621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 01/01/2023]
Abstract
AIMS Cellular responses of an established cell line from human intestinal epithelial cells (INT-407 cells) against poliovirus (PV) infections were investigated in order to find cellular genetic markers for infectious PV detection. METHODS AND RESULTS Gene expression profile of INT-407 cells was analysed by DNA microarray technique when cells were infected with poliovirus 1 (PV1) (sabin) at multiplicity of infection of 10-3 and incubated for 12 h. Poliovirus infection significantly altered the gene expressions of two ion channels, KCNJ4 and SCN7A. The expression profile of KCNJ4 gene was further investigated by real-time RT-qPCR, and it was found that KCNJ4 gene was significantly regulated at 24 h postinfection of PV1. CONCLUSIONS KCNJ4 gene, coding a potassium channel protein, is proposed as a cellular genetic marker for infectious PV detection. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study to show the availability of cellular responses to detect infectious PV. The selection of cellular genetic markers for infectious viruses using DNA microarray and RT-qPCR can be applicable for the other enteric viruses.
Collapse
Affiliation(s)
- D Sano
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi, Japan
| | - M Tazawa
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - M Inaba
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi, Japan
| | - S Kadoya
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - R Watanabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - T Miura
- Department of Environmental Health, National Institute of Public Health, Saitama, Japan
| | - M Kitajima
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - S Okabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| |
Collapse
|
39
|
Cornelia Koeberle S, Tanaka S, Kuriu T, Iwasaki H, Koeberle A, Schulz A, Helbing DL, Yamagata Y, Morrison H, Okabe S. Developmental stage-dependent regulation of spine formation by calcium-calmodulin-dependent protein kinase IIα and Rap1. Sci Rep 2017; 7:13409. [PMID: 29042611 PMCID: PMC5645322 DOI: 10.1038/s41598-017-13728-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/27/2017] [Indexed: 12/18/2022] Open
Abstract
The roles of calcium-calmodulin-dependent protein kinase II-alpha (CaMKIIα) in the expression of long-term synaptic plasticity in the adult brain have been extensively studied. However, how increased CaMKIIα activity controls the maturation of neuronal circuits remains incompletely understood. Herein, we show that pyramidal neurons without CaMKIIα activity upregulate the rate of spine addition, resulting in elevated spine density. Genetic elimination of CaMKIIα activity specifically eliminated the observed maturation-dependent suppression of spine formation. Enhanced spine formation was associated with the stabilization of actin in the spine and could be reversed by increasing the activity of the small GTPase Rap1. CaMKIIα activity was critical in the phosphorylation of synaptic Ras GTPase-activating protein (synGAP), the dispersion of synGAP from postsynaptic sites, and the activation of postsynaptic Rap1. CaMKIIα is already known to be essential in learning and memory, but our findings suggest that CaMKIIα plays an important activity-dependent role in restricting spine density during postnatal development.
Collapse
Affiliation(s)
- Solveigh Cornelia Koeberle
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Institute of Age Research, Fritz Lipmann Institute, Jena, Germany
| | - Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,CREST, JST, Japan
| | - Toshihiko Kuriu
- Department of Neurophysiology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, 769-2193, Japan
| | - Hirohide Iwasaki
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,CREST, JST, Japan
| | - Andreas Koeberle
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University, Jena, Germany
| | - Alexander Schulz
- Institute of Age Research, Fritz Lipmann Institute, Jena, Germany
| | | | - Yoko Yamagata
- Division of Neural Signaling, National Institute for Physiological Sciences, Okazaki, 444-8787, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Okazaki, 444-8787, Japan
| | - Helen Morrison
- Institute of Age Research, Fritz Lipmann Institute, Jena, Germany
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. .,CREST, JST, Japan.
| |
Collapse
|
40
|
Yokoyama T, Lee JK, Miwa K, Opthof T, Tomoyama S, Nakanishi H, Yoshida A, Yasui H, Iida T, Miyagawa S, Okabe S, Sawa Y, Sakata Y, Komuro I. Quantification of sympathetic hyperinnervation and denervation after myocardial infarction by three-dimensional assessment of the cardiac sympathetic network in cleared transparent murine hearts. PLoS One 2017; 12:e0182072. [PMID: 28753665 PMCID: PMC5533449 DOI: 10.1371/journal.pone.0182072] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/12/2017] [Indexed: 01/08/2023] Open
Abstract
Background The sympathetic nervous system is critical in maintaining the normal physiological function of the heart. Its dysfunction in pathological states may exacerbate the substrate for arrhythmias. Obviously, knowledge of its three-dimensional (3D) structure is important, however, it has been revealed by conventional methods only to a limited extent. In this study, a new method of tissue clearance in combination with immunostaining unravels the 3D structure of the sympathetic cardiac network as well as its changes after myocardial infarction. Methods and results Hearts isolated from adult male mice were optically cleared using the CUBIC-perfusion protocol. After making the hearts transparent, sympathetic nerves and coronary vessels were immunofluorescently labeled, and then images were acquired. The spatial distribution of sympathetic nerves was visualized not only along the epicardial surface, but also transmurally. They were distributed over the epicardial surface and penetrated into the myocardium to twist around coronary vessels, but also independent from the coronary vasculature. At 2 weeks after myocardial infarction, we were able to quantify both denervation distal from the site of infarction and nerve sprouting (hyperinnervation) at the ischemic border zone of the hearts in a 3D manner. The nerve density at the ischemic border zone was more than doubled in hearts with myocardial infarction compared to intact mice hearts (3D analyses; n = 5, p<0.05). Conclusions There is both sympathetic hyperinnervation and denervation after myocardial infarction. Both can be visualized and quantified by a new imaging technique in transparent hearts and thereby become a useful tool in elucidating the role of the sympathetic nervous system in arrhythmias associated with myocardial infarction.
Collapse
Affiliation(s)
- Teruki Yokoyama
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Jong-Kook Lee
- Department of Advanced Cardiovascular Regenerative Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- * E-mail:
| | - Keiko Miwa
- Department of Advanced Cardiovascular Regenerative Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tobias Opthof
- Department of Clinical and Experimental Cardiology, Heart Group, Academic Medical Center, Amsterdam, The Netherlands
- Department of Medical Physiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Satoki Tomoyama
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroyuki Nakanishi
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Akira Yoshida
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Haruyo Yasui
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tadatsune Iida
- Department of Cellular Neurobiology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Issei Komuro
- Department of Cardiovascular Medicine, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
41
|
Nakai N, Nagano M, Saitow F, Watanabe Y, Kawamura Y, Kawamoto A, Tamada K, Mizuma H, Onoe H, Watanabe Y, Monai H, Hirase H, Nakatani J, Inagaki H, Kawada T, Miyazaki T, Watanabe M, Sato Y, Okabe S, Kitamura K, Kano M, Hashimoto K, Suzuki H, Takumi T. Serotonin rebalances cortical tuning and behavior linked to autism symptoms in 15q11-13 CNV mice. Sci Adv 2017; 3:e1603001. [PMID: 28691086 PMCID: PMC5479676 DOI: 10.1126/sciadv.1603001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 04/26/2017] [Indexed: 05/21/2023]
Abstract
Serotonin is a critical modulator of cortical function, and its metabolism is defective in autism spectrum disorder (ASD) brain. How serotonin metabolism regulates cortical physiology and contributes to the pathological and behavioral symptoms of ASD remains unknown. We show that normal serotonin levels are essential for the maintenance of neocortical excitation/inhibition balance, correct sensory stimulus tuning, and social behavior. Conversely, low serotonin levels in 15q dup mice (a model for ASD with the human 15q11-13 duplication) result in impairment of the same phenotypes. Restoration of normal serotonin levels in 15q dup mice revealed the reversibility of a subset of ASD-related symptoms in the adult. These findings suggest that serotonin may have therapeutic potential for discrete ASD symptoms.
Collapse
Affiliation(s)
- Nobuhiro Nakai
- RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
- Graduate School of Biostudies, Kyoto University, Sakyo, Kyoto 606-8501, Japan
| | - Masatoshi Nagano
- Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8602, Japan
| | - Fumihito Saitow
- Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8602, Japan
| | - Yasuhito Watanabe
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
- Department of Clinical Neurobiology, University Hospital and German Cancer Research Center, Heidelberg 69120, Germany
- Corresponding author. (T.T.); (H.S.); (Yasuhito Watanabe)
| | - Yoshinobu Kawamura
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
| | - Akiko Kawamoto
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
| | - Kota Tamada
- RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
| | - Hiroshi Mizuma
- RIKEN Center for Life Science Technologies, Chuo, Kobe 650-0047, Japan
| | - Hirotaka Onoe
- RIKEN Center for Life Science Technologies, Chuo, Kobe 650-0047, Japan
| | | | - Hiromu Monai
- RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan
| | - Hajime Hirase
- RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan
| | - Jin Nakatani
- Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
| | - Hirofumi Inagaki
- Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8602, Japan
| | - Tomoyuki Kawada
- Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8602, Japan
| | - Taisuke Miyazaki
- Department of Anatomy and Embryology, Hokkaido University Graduate School of Medicine, Kita, Sapporo 060-8638, Japan
| | - Masahiko Watanabe
- Department of Anatomy and Embryology, Hokkaido University Graduate School of Medicine, Kita, Sapporo 060-8638, Japan
| | - Yuka Sato
- Graduate School of Medicine, University of Tokyo, Bunkyo, Tokyo 113-8654, Japan
| | - Shigeo Okabe
- Graduate School of Medicine, University of Tokyo, Bunkyo, Tokyo 113-8654, Japan
| | - Kazuo Kitamura
- Graduate School of Medicine, University of Tokyo, Bunkyo, Tokyo 113-8654, Japan
| | - Masanobu Kano
- Graduate School of Medicine, University of Tokyo, Bunkyo, Tokyo 113-8654, Japan
| | - Kouichi Hashimoto
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
| | - Hidenori Suzuki
- Graduate School of Medicine, Nippon Medical School, Bunkyo, Tokyo 113-8602, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
- Corresponding author. (T.T.); (H.S.); (Yasuhito Watanabe)
| | - Toru Takumi
- RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan
- Graduate School of Biomedical Sciences, Hiroshima University, Minami, Hiroshima 734-8553, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
- Corresponding author. (T.T.); (H.S.); (Yasuhito Watanabe)
| |
Collapse
|
42
|
Iguchi R, Iwasaki H, Okabe S. [Diversity of the molecular mechanisms of synapse formation in the central nervous system]. Seikagaku 2017; 89:77-80. [PMID: 29624962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
|
43
|
Parajuli LK, Tanaka S, Okabe S. Insights into age-old questions of new dendritic spines: From form to function. Brain Res Bull 2016; 129:3-11. [PMID: 27491624 DOI: 10.1016/j.brainresbull.2016.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/18/2016] [Accepted: 07/31/2016] [Indexed: 11/30/2022]
Abstract
Principal neurons in multiple brain regions receive a vast majority of excitatory synaptic contacts on the tiny dendritic appendages called dendritic spines. These structures are believed to be the locus of memory storage in the brain. Indeed, neurological diseases leading to impairment in memory and cognitive capabilities are often associated with structural alteration of dendritic spines. While several landmark studies in the past have provided a great deal of information on the structure, function and molecular composition of prototypical mature dendritic spines, we still have a limited knowledge of nascent spines. In recent years there has been a surge of interest to understand the nascent spines and the increasing technical advances in the genetic, molecular and imaging methods have opened avenues for systematic and thorough investigation. In this review, by discussing studies from several labs including ours, we provide a systematic summary of the development, structure, molecular expression and function of nascent spines and highlight some of the potentially important and interesting research questions that remain to be answered.
Collapse
Affiliation(s)
- Laxmi Kumar Parajuli
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
| |
Collapse
|
44
|
Miyazaki J, Iida T, Tanaka S, Hayashi-Takagi A, Kasai H, Okabe S, Kobayashi T. Fast 3D visualization of endogenous brain signals with high-sensitivity laser scanning photothermal microscopy. Biomed Opt Express 2016; 7:1702-10. [PMID: 27231615 PMCID: PMC4871075 DOI: 10.1364/boe.7.001702] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 05/28/2023]
Abstract
A fast, high-sensitivity photothermal microscope was developed by implementing a spatially segmented balanced detection scheme into a laser scanning microscope. We confirmed a 4.9 times improvement in signal-to-noise ratio in the spatially segmented balanced detection compared with that of conventional detection. The system demonstrated simultaneous bi-modal photothermal and confocal fluorescence imaging of transgenic mouse brain tissue with a pixel dwell time of 20 μs. The fluorescence image visualized neurons expressing yellow fluorescence proteins, while the photothermal signal detected endogenous chromophores in the mouse brain, allowing 3D visualization of the distribution of various features such as blood cells and fine structures probably due to lipids. This imaging modality was constructed using compact and cost-effective laser diodes, and will thus be widely useful in the life and medical sciences.
Collapse
Affiliation(s)
- Jun Miyazaki
- Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan
- JST, CREST, K’ Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
| | - Tadatsune Iida
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo, 113-0033, Japan
| | - Shinji Tanaka
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo, 113-0033, Japan
| | - Akiko Hayashi-Takagi
- Department of Structural Physiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo, 113-0033, Japan
| | - Haruo Kasai
- JST, CREST, K’ Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
- Department of Structural Physiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo, 113-0033, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo, 113-0033, Japan
| | - Takayoshi Kobayashi
- Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan
- JST, CREST, K’ Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
- Department of Electrophysics, National Chiao-Tung University, Hsinchu 300, Taiwan
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0971, Japan
| |
Collapse
|
45
|
Ochi T, Nakatomi H, Ito A, Imai H, Okabe S, Saito N. Temporal changes in the response of SVZ neural stem cells to intraventricular administration of growth factors. Brain Res 2016; 1636:118-129. [PMID: 26845459 DOI: 10.1016/j.brainres.2016.01.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 01/18/2016] [Accepted: 01/26/2016] [Indexed: 01/17/2023]
Abstract
In vivo growth factor (GF) treatment is a promising approach to enhance the regenerative capacity of neural stem cells (NSCs) for brain repair. However, how exogenous GFs affect endogenous NSCs is not well understood. This study investigated the impact of intraventricular administration of fibroblast growth factor 2 and epidermal growth factor on NSCs in the subventricular zone of intact adult mice. GFs were administered for various periods (3, 7, 10, and 14 days), and the proliferation and neuronal production of NSCs were assessed during and after GF treatment. We found that proliferation of NSCs and their progeny is markedly augmented during the first 7 days after the initiation of GF treatment. GF treatment for longer periods, however, did not lead to further increases in the NSC pool, but rather attenuated such proliferation and inhibited neurogenesis. As a result, the production of new olfactory bulb neurons was increased in animals treated with GFs for 7 days but decreased in animals treated for 14 days. These results show time-dependent changes in the response of NSCs to exogenous GFs and demonstrate that precise control of the duration of GF treatment is important for significant enhancement of neuronal production by NSCs in vivo for brain repair.
Collapse
Affiliation(s)
- Takashi Ochi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Hirofumi Nakatomi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Akihiro Ito
- Department of Neurosurgery, Teikyo University School of Medicine, Itabashi-ku, Tokyo 173-8606, Japan
| | - Hideaki Imai
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Nobuhito Saito
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
| |
Collapse
|
46
|
Tanaka S, Isshiki M, Kuriu T, Tabuchi K, Takumi T, Okabe S. C2-P-05In vivo two-photon imaging of synapse dynamics in mouse models of autism. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv301] [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: 11/13/2022] Open
|
47
|
Iida T, Tanaka S, Okabe S. C4-P-09Three-dimensional analysis of microglia and synapses with large-volume optical reconstruction. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv327] [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: 11/13/2022] Open
|
48
|
Iwasaki H, Okabe S. C6-O-01Three-dimensional reconstruction of neural tissue from serial sections collected by ATUM. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv201] [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: 11/15/2022] Open
|
49
|
Kashiwagi Y, Okabe S. C2-P-06Roles of ACF7, a large linker protein interacting with both microtubules and F-actin, in the postsynapse development. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv302] [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: 11/12/2022] Open
|
50
|
Affiliation(s)
- Nobuhiko Ohno
- Department of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan Center for Multidisciplinary Brain Research, National Institute for Physiological Sciences, Okazaki, Aichi 444-8787, Japan
| | - Shigeo Okabe
- Department of Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|