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Pinyomahakul J, Ise M, Kawamura M, Yamada T, Okuyama K, Shibata S, Takizawa J, Abe M, Sakimura K, Takebayashi H. Analysis of Brain, Blood, and Testis Phenotypes Lacking the Vps13a Gene in C57BL/6N Mice. Int J Mol Sci 2024; 25:7776. [PMID: 39063018 PMCID: PMC11277237 DOI: 10.3390/ijms25147776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
The Vps13a gene encodes a lipid transfer protein called VPS13A, or chorein, associated with mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs), mitochondria-endosomes, and lipid droplets. This protein plays a crucial role in inter-organelle communication and lipid transport. Mutations in the VPS13A gene are implicated in the pathogenesis of chorea-acanthocytosis (ChAc), a rare autosomal recessive neurodegenerative disorder characterized by chorea, orofacial dyskinesias, hyperkinetic movements, seizures, cognitive impairment, and acanthocytosis. Previous mouse models of ChAc have shown variable disease phenotypes depending on the genetic background. In this study, we report the generation of a Vps13a flox allele in a pure C57BL/6N mouse background and the subsequent creation of Vps13a knockout (KO) mice via Cre-recombination. Our Vps13a KO mice exhibited increased reticulocytes but not acanthocytes in peripheral blood smears. Additionally, there were no significant differences in the GFAP- and Iba1-positive cells in the striatum, the basal ganglia of the central nervous system. Interestingly, we observed abnormal spermatogenesis leading to male infertility. These findings indicate that Vps13a KO mice are valuable models for studying male infertility and some hematological aspects of ChAc.
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Affiliation(s)
- Jitrapa Pinyomahakul
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (J.P.)
| | - Masataka Ise
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (J.P.)
| | - Meiko Kawamura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan; (M.K.); (M.A.); (K.S.)
| | - Takashi Yamada
- Department of Hematology, Endocrinology and Metabolism, Faculty of Medicine, Niigata University, Niigata 951-8510, Japan; (T.Y.); (J.T.)
| | - Kentaro Okuyama
- Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (K.O.); (S.S.)
| | - Shinsuke Shibata
- Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (K.O.); (S.S.)
| | - Jun Takizawa
- Department of Hematology, Endocrinology and Metabolism, Faculty of Medicine, Niigata University, Niigata 951-8510, Japan; (T.Y.); (J.T.)
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan; (M.K.); (M.A.); (K.S.)
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan; (M.K.); (M.A.); (K.S.)
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (J.P.)
- Center for Coordination of Research Facilities, Niigata University, Niigata 951-8510, Japan
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2
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Muhamad NA, Masutani K, Furukawa S, Yuri S, Toriyama M, Matsumoto C, Itoh S, Shinagawa Y, Isotani A, Toriyama M, Itoh H. Astrocyte-Specific Inhibition of the Primary Cilium Suppresses C3 Expression in Reactive Astrocyte. Cell Mol Neurobiol 2024; 44:48. [PMID: 38822888 PMCID: PMC11144130 DOI: 10.1007/s10571-024-01482-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 05/21/2024] [Indexed: 06/03/2024]
Abstract
C3-positive reactive astrocytes play a neurotoxic role in various neurodegenerative diseases. However, the mechanisms controlling C3-positive reactive astrocyte induction are largely unknown. We found that the length of the primary cilium, a cellular organelle that receives extracellular signals was increased in C3-positive reactive astrocytes, and the loss or shortening of primary cilium decreased the count of C3-positive reactive astrocytes. Pharmacological experiments suggested that Ca2+ signalling may synergistically promote C3 expression in reactive astrocytes. Conditional knockout (cKO) mice that specifically inhibit primary cilium formation in astrocytes upon drug stimulation exhibited a reduction in the proportions of C3-positive reactive astrocytes and apoptotic cells in the brain even after the injection of lipopolysaccharide (LPS). Additionally, the novel object recognition (NOR) score observed in the cKO mice was higher than that observed in the neuroinflammation model mice. These results suggest that the primary cilium in astrocytes positively regulates C3 expression. We propose that regulating astrocyte-specific primary cilium signalling may be a novel strategy for the suppression of neuroinflammation.
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Affiliation(s)
- Nor Atiqah Muhamad
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Kohei Masutani
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Shota Furukawa
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Shunsuke Yuri
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Michinori Toriyama
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University, 1 Gakuenuegahara, Sanda, Hyogo, 669-1330, Japan
| | - Chuya Matsumoto
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Seiya Itoh
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Yuichiro Shinagawa
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Ayako Isotani
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan
| | - Manami Toriyama
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan.
| | - Hiroshi Itoh
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama Cho, Ikoma, Nara, 630-0192, Japan.
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3
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Suzuki N, Oota-Ishigaki A, Kaizuka T, Itoh M, Yamazaki M, Natsume R, Abe M, Sakimura K, Mishina M, Hayashi T. Limb-Clasping Response in NMDA Receptor Palmitoylation-Deficient Mice. Mol Neurobiol 2024:10.1007/s12035-024-04166-9. [PMID: 38592586 DOI: 10.1007/s12035-024-04166-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 04/01/2024] [Indexed: 04/10/2024]
Abstract
Proper regulation of N-methyl-D-aspartate-type glutamate receptor (NMDA receptor) expression is responsible for excitatory synaptic functions in the mammalian brain. NMDA receptor dysfunction can cause various neuropsychiatric disorders and neurodegenerative diseases. Posttranslational protein S-palmitoylation, the covalent attachment of palmitic acid to intracellular cysteine residues via thioester bonds, occurs in the carboxyl terminus of GluN2B, which is the major regulatory NMDA receptor subunit. Mutations of three palmitoylatable cysteine residues in the membrane-proximal cluster of GluN2B to non-palmitoylatable serine (3CS) lead to the dephosphorylation of GluN2B Tyr1472 in the hippocampus and cerebral cortex, inducing a reduction in the surface expression of GluN2B-containig NMDA receptors. Furthermore, adult GluN2B 3CS homozygous mice demonstrated a definite clasping response without abnormalities in the gross brain structure, other neurological reflexes, or expression levels of synaptic proteins in the cerebrum. This behavioral disorder, observed in the GluN2B 3CS knock-in mice, indicated that complex higher brain functions are coordinated through the palmitoylation-dependent regulation of NMDA receptors in excitatory synapses.
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Affiliation(s)
- Nami Suzuki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Akiko Oota-Ishigaki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Toshie Kaizuka
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan
| | - Masayuki Itoh
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan
| | - Maya Yamazaki
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Rie Natsume
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Masayoshi Mishina
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan
- Brain Science Laboratory, The Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Takashi Hayashi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan.
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan.
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan.
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4
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Shiraishi T, Katayama Y, Nishiyama M, Shoji H, Miyakawa T, Mizoo T, Matsumoto A, Hijikata A, Shirai T, Mayanagi K, Nakayama KI. The complex etiology of autism spectrum disorder due to missense mutations of CHD8. Mol Psychiatry 2024:10.1038/s41380-024-02491-y. [PMID: 38438524 DOI: 10.1038/s41380-024-02491-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 03/06/2024]
Abstract
CHD8 is an ATP-dependent chromatin-remodeling factor encoded by the most frequently mutated gene in individuals with autism spectrum disorder (ASD). Although many studies have examined the consequences of CHD8 haploinsufficiency in cells and mice, few have focused on missense mutations, the most common type of CHD8 alteration in ASD patients. We here characterized CHD8 missense mutations in ASD patients according to six prediction scores and experimentally examined the effects of such mutations on the biochemical activities of CHD8, neural differentiation of embryonic stem cells, and mouse behavior. Only mutations with high prediction scores gave rise to ASD-like phenotypes in mice, suggesting that not all CHD8 missense mutations detected in ASD patients are directly responsible for the development of ASD. Furthermore, we found that mutations with high scores cause ASD by mechanisms either dependent on or independent of loss of chromatin-remodeling function. Our results thus provide insight into the molecular underpinnings of ASD pathogenesis caused by missense mutations of CHD8.
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Affiliation(s)
- Taichi Shiraishi
- Division of Cell Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Fukuoka, Fukuoka, 812-8582, Japan
| | - Yuta Katayama
- Division of Cell Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Fukuoka, Fukuoka, 812-8582, Japan
| | - Masaaki Nishiyama
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, 920-8640, Japan
| | - Hirotaka Shoji
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Tsuyoshi Miyakawa
- Division of Systems Medical Science, Center for Medical Science, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Taisuke Mizoo
- Division of Cell Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Fukuoka, Fukuoka, 812-8582, Japan
| | - Akinobu Matsumoto
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602, Japan
| | - Atsushi Hijikata
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Tsuyoshi Shirai
- Department of Computer Bioscience, Nagahama Institute of Bio-Science and Technology, 1266 Tamura-Cho, Nagahama, Shiga, 526-0829, Japan
| | - Kouta Mayanagi
- Department of Drug Discovery Structural Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Fukuoka, 812-8582, Japan
| | - Keiichi I Nakayama
- Division of Cell Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Fukuoka, Fukuoka, 812-8582, Japan.
- Anticancer Strategies Laboratory, TMDU Advanced Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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5
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Iida I, Konno K, Natsume R, Abe M, Watanabe M, Sakimura K, Terunuma M. Behavioral analysis of kainate receptor KO mice and the role of GluK3 subunit in anxiety. Sci Rep 2024; 14:4521. [PMID: 38402313 PMCID: PMC10894277 DOI: 10.1038/s41598-024-55063-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 02/20/2024] [Indexed: 02/26/2024] Open
Abstract
Kainate receptors (KARs) are one of the ionotropic glutamate receptors in the central nervous system (CNS) comprised of five subunits, GluK1-GluK5. There is a growing interest in the association between KARs and psychiatric disorders, and there have been several studies investigating the behavioral phenotypes of KAR deficient mice, however, the difference in the genetic background has been found to affect phenotype in multiple mouse models of human diseases. Here, we examined GluK1-5 single KO mice in a pure C57BL/6N background and identified that GluK3 KO mice specifically express anxiolytic-like behavior with an alteration in dopamine D2 receptor (D2R)-induced anxiety, and reduced D2R expression in the striatum. Biochemical studies in the mouse cortex confirmed that GluK3 subunits do not assemble with GluK4 and GluK5 subunits, that can be activated by lower concentration of agonists. Overall, we found that GluK3-containing KARs function to express anxiety, which may represent promising anti-anxiety medication targets.
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Affiliation(s)
- Izumi Iida
- Division of Oral Biochemistry, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, 951-8514, Japan
- Research Center for Advanced Oral Science, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, 951-8514, Japan
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro, Tokyo, 153-8902, Japan
| | - Kohtarou Konno
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Rie Natsume
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan.
| | - Miho Terunuma
- Division of Oral Biochemistry, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, 951-8514, Japan.
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6
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Katano T, Konno K, Takao K, Abe M, Yoshikawa A, Miyakawa T, Sakimura K, Watanabe M, Ito S, Kobayashi T. Brain-enriched guanylate kinase-associated protein, a component of the post-synaptic density protein complexes, contributes to learning and memory. Sci Rep 2023; 13:22027. [PMID: 38086879 PMCID: PMC10716515 DOI: 10.1038/s41598-023-49537-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 12/09/2023] [Indexed: 12/18/2023] Open
Abstract
Brain-enriched guanylate kinase-associated protein (BEGAIN) is highly enriched in the post-synaptic density (PSD) fraction and was identified in our previous study as a protein associated with neuropathic pain in the spinal dorsal horn. PSD protein complexes containing N-methyl-D-aspartate receptors are known to be involved in neuropathic pain. Since these PSD proteins also participate in learning and memory, BEGAIN is also expected to play a crucial role in this behavior. To verify this, we first examined the distribution of BEGAIN in the brain. We found that BEGAIN was widely distributed in the brain and highly expressed in the dendritic regions of the hippocampus. Moreover, we found that BEGAIN was concentrated in the PSD fraction of the hippocampus. Furthermore, immunoelectron microscopy confirmed that BEGAIN was localized at the asymmetric synapses. Behavioral tests were performed using BEGAIN-knockout (KO) mice to determine the contribution of BEGAIN toward learning and memory. Spatial reference memory and reversal learning in the Barns circular maze test along with contextual fear and cued fear memory in the contextual and cued fear conditioning test were significantly impaired in BEGAIN-KO mice compared to with those in wild-type mice. Thus, this study reveals that BEGAIN is a component of the post-synaptic compartment of excitatory synapses involved in learning and memory.
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Affiliation(s)
- Tayo Katano
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Japan.
| | - Kohtarou Konno
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Keizo Takao
- Section of Behavior Patterns, National Institute of Physiological Sciences, NINS, Okazaki, Japan
- Department of Behavioral Physiology, Faculty of Medicine, Life Science Research Center, University of Toyama, Toyama, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Akari Yoshikawa
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Japan
| | - Tsuyoshi Miyakawa
- Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Seiji Ito
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Japan
- Department of Anesthesiology, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Takuya Kobayashi
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Japan
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7
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Honda A, Nozumi M, Ito Y, Natsume R, Kawasaki A, Nakatsu F, Abe M, Uchino H, Matsushita N, Ikeda K, Arita M, Sakimura K, Igarashi M. Very-long-chain fatty acids are crucial to neuronal polarity by providing sphingolipids to lipid rafts. Cell Rep 2023; 42:113195. [PMID: 37816355 DOI: 10.1016/j.celrep.2023.113195] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/19/2023] [Accepted: 09/14/2023] [Indexed: 10/12/2023] Open
Abstract
Fatty acids have long been considered essential to brain development; however, the involvement of their synthesis in nervous system formation is unclear. We generate mice with knockout of GPSN2, an enzyme for synthesis of very-long-chain fatty acids (VLCFAs) and investigate the effects. Both GPSN2-/- and GPSN2+/- mice show abnormal neuronal networks as a result of impaired neuronal polarity determination. Lipidomics of GPSN2-/- embryos reveal that ceramide synthesis is specifically inhibited depending on FA length; namely, VLCFA-containing ceramide is reduced. We demonstrate that lipid rafts are highly enriched in growth cones and that GPSN2+/- neurons lose gangliosides in their membranes. Application of C24:0 ceramide, but not C16:0 ceramide or C24:0 phosphatidylcholine, to GPSN2+/- neurons rescues both neuronal polarity determination and lipid-raft density in the growth cone. Taken together, our results indicate that VLCFA synthesis contributes to physiological neuronal development in brain network formation, in particular neuronal polarity determination through the formation of lipid rafts.
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Affiliation(s)
- Atsuko Honda
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan; Center for Research Promotion, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan
| | - Motohiro Nozumi
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan
| | - Yasuyuki Ito
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan
| | - Rie Natsume
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan; Department of Animal Model Development, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan
| | - Asami Kawasaki
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan
| | - Fubito Nakatsu
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan; Department of Animal Model Development, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan
| | - Haruki Uchino
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama 230-0045, Japan; Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo 105-8512, Japan
| | - Natsuki Matsushita
- Division of Laboratory Animal Research, Aichi Medical University School of Medicine, Nagakute, Aichi 480-1195, Japan
| | - Kazutaka Ikeda
- Department of Applied Genomics, Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Makoto Arita
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama 230-0045, Japan; Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan; Department of Animal Model Development, Brain Research Institute, Niigata University, Chuo-ku, Niigata 951-8585, Japan
| | - Michihiro Igarashi
- Department of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan.
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8
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Yamaguchi Y, Maekawa Y, Kabashima K, Mizuno T, Tainaka M, Suzuki T, Dojo K, Tominaga T, Kuroiwa S, Masubuchi S, Doi M, Tominaga K, Kobayashi K, Yamagata S, Itoi K, Abe M, Schwartz WJ, Sakimura K, Okamura H. An intact pituitary vasopressin system is critical for building a robust circadian clock in the suprachiasmatic nucleus. Proc Natl Acad Sci U S A 2023; 120:e2308489120. [PMID: 37844254 PMCID: PMC10614613 DOI: 10.1073/pnas.2308489120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/12/2023] [Indexed: 10/18/2023] Open
Abstract
The circadian clock is a biological timekeeping system that oscillates with a circa-24-h period, reset by environmental timing cues, especially light, to the 24-h day-night cycle. In mammals, a "central" clock in the hypothalamic suprachiasmatic nucleus (SCN) synchronizes "peripheral" clocks throughout the body to regulate behavior, metabolism, and physiology. A key feature of the clock's oscillation is resistance to abrupt perturbations, but the mechanisms underlying such robustness are not well understood. Here, we probe clock robustness to unexpected photic perturbation by measuring the speed of reentrainment of the murine locomotor rhythm after an abrupt advance of the light-dark cycle. Using an intersectional genetic approach, we implicate a critical role for arginine vasopressin pathways, both central within the SCN and peripheral from the anterior pituitary.
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Grants
- 18H04015 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 15H05642 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 22K06594 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 22K18384 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 20K20864 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 18002016 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 16H06276 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- JPMJCR14W3 MEXT | JST | Core Research for Evolutional Science and Technology (CREST)
- BR220401 MEXT | Japan Society for the Promotion of Science (JSPS)
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Affiliation(s)
- Yoshiaki Yamaguchi
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
- Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita564-8680, Japan
| | - Yota Maekawa
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Kyohei Kabashima
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Takanobu Mizuno
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Motomi Tainaka
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Toru Suzuki
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Kumiko Dojo
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Takeichiro Tominaga
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Sayaka Kuroiwa
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Satoru Masubuchi
- Department of Physiology, School of Medicine, Aichi Medical University, Nagakute480-1195, Japan
| | - Masao Doi
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
| | - Keiko Tominaga
- Graduate School of Frontier Biosciences, Osaka University, Suita565-0871, Japan
| | - Kazuto Kobayashi
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima960-1295, Japan
| | - Satoshi Yamagata
- Graduate School of Information Sciences, Tohoku University, Sendai980-0845, Japan
| | - Keiichi Itoi
- Graduate School of Information Sciences, Tohoku University, Sendai980-0845, Japan
- Department of Nursing, Faculty of Health Sciences, Tohoku Fukushi University, Sendai981-8522, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - William J. Schwartz
- Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX78712
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Hitoshi Okamura
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto606-8501, Japan
- Department of Neuroscience, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
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9
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Hori K, Yamazaki S, Ohtaka-Maruyama C, Ono T, Iguchi T, Masai H. Cdc7 kinase is required for postnatal brain development. Genes Cells 2023; 28:679-693. [PMID: 37584256 DOI: 10.1111/gtc.13059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 07/20/2023] [Accepted: 08/06/2023] [Indexed: 08/17/2023]
Abstract
The evolutionally conserved Cdc7 kinase plays crucial roles in initiation of DNA replication as well as in other chromosomal events. To examine the roles of Cdc7 in brain development, we have generated mice carrying Cdc7 knockout in neural stem cells by using Nestin-Cre. The Cdc7Fl/Fl NestinCre mice were born, but exhibited severe growth retardation and impaired postnatal brain development. These mice exhibited motor dysfunction within 9 days after birth and did not survive for more than 19 days. The cerebral cortical layer formation was impaired, although the cortical cell numbers were not altered in the mutant. In the cerebellum undergoing hypoplasia, granule cells (CGC) decreased in number in Cdc7Fl/F l NestinCre mice compared to the control at E15-18, suggesting that Cdc7 is required for DNA replication and cell proliferation of CGC at mid embryonic stage (before embryonic day 15). On the other hand, the Purkinje cell numbers were not altered but its layer formation was impaired in the mutant. These results indicate differential roles of Cdc7 in DNA replication/cell proliferation in brain. Furthermore, the defects of layer formation suggest a possibility that Cdc7 may play an additional role in cell migration during neural development.
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Affiliation(s)
- Karin Hori
- Genome Dynamics Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Satoshi Yamazaki
- Genome Dynamics Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Chiaki Ohtaka-Maruyama
- Developmental Neuroscience Project, Department of Brain and Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Tomio Ono
- Laboratory for Transgenic Technology, Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Tomohiro Iguchi
- Genome Dynamics Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hisao Masai
- Genome Dynamics Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
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10
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Nishida K, Matsumura S, Uchida H, Abe M, Sakimura K, Badea TC, Kobayashi T. Brn3a controls the soma localization and axonal extension patterns of developing spinal dorsal horn neurons. PLoS One 2023; 18:e0285295. [PMID: 37733805 PMCID: PMC10513334 DOI: 10.1371/journal.pone.0285295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/10/2023] [Indexed: 09/23/2023] Open
Abstract
The spinal dorsal horn comprises heterogeneous neuronal populations, that interconnect with one another to form neural circuits modulating various types of sensory information. Decades of evidence has revealed that transcription factors expressed in each neuronal progenitor subclass play pivotal roles in the cell fate specification of spinal dorsal horn neurons. However, the development of subtypes of these neurons is not fully understood in more detail as yet and warrants the investigation of additional transcription factors. In the present study, we examined the involvement of the POU domain-containing transcription factor Brn3a in the development of spinal dorsal horn neurons. Analyses of Brn3a expression in the developing spinal dorsal horn neurons in mice demonstrated that the majority of the Brn3a-lineage neurons ceased Brn3a expression during embryonic stages (Brn3a-transient neurons), whereas a limited population of them continued to express Brn3a at high levels after E18.5 (Brn3a-persistent neurons). Loss of Brn3a disrupted the localization pattern of Brn3a-persistent neurons, indicating a critical role of this transcription factor in the development of these neurons. In contrast, Brn3a overexpression in Brn3a-transient neurons directed their localization in a manner similar to that in Brn3a-persistent neurons. Moreover, Brn3a-overexpressing neurons exhibited increased axonal extension to the ventral and ventrolateral funiculi, where the axonal tracts of Brn3a-persistent neurons reside. These results suggest that Brn3a controls the soma localization and axonal extension patterns of Brn3a-persistent spinal dorsal horn neurons.
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Affiliation(s)
- Kazuhiko Nishida
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
| | - Shinji Matsumura
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
| | - Hitoshi Uchida
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 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
| | - Tudor Constantin Badea
- Research and Development Institute, Faculty of Medicine, Transylvania University of Brasov, Brasov, Romania
- National Brain Research Center, ICIA, Romanian Academy, Bucharest, Romania
| | - Takuya Kobayashi
- Department of Medical Chemistry, Kansai Medical University, Hirakata, Osaka, Japan
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11
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Nagata S, Yamasaki R, Takase EO, Iida K, Watanabe M, Masaki K, Wijering MHC, Yamaguchi H, Kira JI, Isobe N. Iguratimod Ameliorates the Severity of Secondary Progressive Multiple Sclerosis in Model Mice by Directly Inhibiting IL-6 Production and Th17 Cell Migration via Mitigation of Glial Inflammation. BIOLOGY 2023; 12:1217. [PMID: 37759616 PMCID: PMC10525689 DOI: 10.3390/biology12091217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/30/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
We previously reported a novel secondary progressive multiple sclerosis (SPMS) model, progressive experimental autoimmune encephalomyelitis (pEAE), in oligodendroglia-specific Cx47-inducible conditional knockout (Cx47 icKO) mice. Based on our prior study showing the efficacy of iguratimod (IGU), an antirheumatic drug, for acute EAE treatment, we aimed to elucidate the effect of IGU on the SPMS animal model. We induced pEAE by immunizing Cx47 icKO mice with myelin oligodendrocyte glycoprotein peptide 35-55. IGU was orally administered from 17 to 50 days post-immunization. We also prepared a primary mixed glial cell culture and measured cytokine levels in the culture supernatant after stimulation with designated cytokines (IL-1α, C1q, TNF-α) and lipopolysaccharide. A migration assay was performed to evaluate the effect of IGU on the migration ability of T cells toward mixed glial cell cultures. IGU treatment ameliorated the clinical signs of pEAE, decreased the demyelinated area, and attenuated glial inflammation on immunohistochemical analysis. Additionally, IGU decreased the intrathecal IL-6 level and infiltrating Th17 cells. The migration assay revealed reduced Th17 cell migration and IL-6 levels in the culture supernatant after IGU treatment. Collectively, IGU successfully mitigated the clinical signs of pEAE by suppressing Th17 migration through inhibition of IL-6 production by proinflammatory-activated glial cells.
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Affiliation(s)
- Satoshi Nagata
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ryo Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ezgi Ozdemir Takase
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Kotaro Iida
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Mitsuru Watanabe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Katsuhisa Masaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Marion Heleen Cathérine Wijering
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells & Systems, University of Groningen, University Medical Center Groningen (UMCG), MS Center Noord Nederland, 9713 AV Groningen, The Netherlands
| | - Hiroo Yamaguchi
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- School of Physical Therapy, Faculty of Rehabilitation, Reiwa Health Sciences University, Fukuoka 811-0213, Japan
| | - Jun-ichi Kira
- Translational Neuroscience Center, Graduate School of Medicine, and School of Pharmacy at Fukuoka, International University of Health and Welfare, Fukuoka 831-8501, Japan
- Department of Neurology, Brain and Nerve Center, Fukuoka Central Hospital, Fukuoka 810-0022, Japan
| | - Noriko Isobe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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12
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Hagiwara A, Mizutani A, Kawamura S, Abe M, Hida Y, Sakimura K, Ohtsuka T. Critical Role of the Presynaptic Protein CAST in Maintaining the Photoreceptor Ribbon Synapse Triad. Int J Mol Sci 2023; 24:ijms24087251. [PMID: 37108413 PMCID: PMC10138387 DOI: 10.3390/ijms24087251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/08/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
The cytomatrix at the active zone-associated structural protein (CAST) and its homologue, named ELKS, being rich in glutamate (E), leucine (L), lysine (K), and serine (S), belong to a family of proteins that organize presynaptic active zones at nerve terminals. These proteins interact with other active zone proteins, including RIMs, Munc13s, Bassoon, and the β subunit of Ca2+ channels, and have various roles in neurotransmitter release. A previous study showed that depletion of CAST/ELKS in the retina causes morphological changes and functional impairment of this structure. In this study, we investigated the roles of CAST and ELKS in ectopic synapse localization. We found that the involvement of these proteins in ribbon synapse distribution is complex. Unexpectedly, CAST and ELKS, in photoreceptors or in horizontal cells, did not play a major role in ribbon synapse ectopic localization. However, depletion of CAST and ELKS in the mature retina resulted in degeneration of the photoreceptors. These findings suggest that CAST and ELKS play critical roles in maintaining neural signal transduction in the retina, but the regulation of photoreceptor triad synapse distribution is not solely dependent on their actions within photoreceptors and horizontal cells.
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Affiliation(s)
- Akari Hagiwara
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
- Department of Biochemistry, Faculty of Medicine, University of Yamanashi, Yamanashi 409-3898, Japan
| | - Ayako Mizutani
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
| | - Saki Kawamura
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Yamato Hida
- Department of Biochemistry, Faculty of Medicine, University of Yamanashi, Yamanashi 409-3898, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Toshihisa Ohtsuka
- Department of Biochemistry, Faculty of Medicine, University of Yamanashi, Yamanashi 409-3898, Japan
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13
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Quantitative analysis of NMDA receptor subunits proteins in mouse brain. Neurochem Int 2023; 165:105517. [PMID: 36913980 DOI: 10.1016/j.neuint.2023.105517] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/17/2023] [Accepted: 03/06/2023] [Indexed: 03/15/2023]
Abstract
NMDA-type glutamate receptors (NMDARs) are tetrameric channel complex composed of two subunits of GluN1, which is encoded by a single gene and diversified by alternative splicing, and two subunits from four subtypes of GluN2, leading to various combinations of subunits and channel specificities. However, there is no comprehensive quantitative analysis of GluN subunit proteins for relative comparison, and their compositional ratios at various regions and developmental stages have not been clarified. Here we prepared six chimeric subunits, by fusing an N-terminal side of the GluA1 subunit with a C-terminal side of each of two splicing isoforms of GluN1 subunit and four GluN2 subunits, with which titers of respective NMDAR subunit antibodies could be standardized using common GluA1 antibody, thus enabling quantification of relative protein levels of each NMDAR subunit by western blotting. We determined relative protein amounts of NMDAR subunits in crude, membrane (P2) and microsomal fractions prepared from the cerebral cortex, hippocampus and cerebellum in adult mice. We also examined amount changes in the three brain regions during developmental stages. Their relative amounts in the cortical crude fraction were almost parallel to those of mRNA expression, except for some subunits. Interestingly, a considerable amount of GluN2D protein existed in adult brains, although its transcription level declines after early postnatal stages. GluN1 was larger in quantity than GluN2 in the crude fraction, whereas GluN2 increased in the membrane component-enriched P2 fraction, except in the cerebellum. These data will provide the basic spatio-temporal information on the amount and composition of NMDARs.
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14
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Cre-dependent ACR2-expressing reporter mouse strain for efficient long-lasting inhibition of neuronal activity. Sci Rep 2023; 13:3966. [PMID: 36894577 PMCID: PMC9998869 DOI: 10.1038/s41598-023-30907-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Optogenetics is a powerful tool for manipulating neuronal activity by light illumination with high temporal and spatial resolution. Anion-channelrhodopsins (ACRs) are light-gated anion channels that allow researchers to efficiently inhibit neuronal activity. A blue light-sensitive ACR2 has recently been used in several in vivo studies; however, the reporter mouse strain expressing ACR2 has not yet been reported. Here, we generated a new reporter mouse strain, LSL-ACR2, in which ACR2 is expressed under the control of Cre recombinase. We crossed this strain with a noradrenergic neuron-specific driver mouse (NAT-Cre) to generate NAT-ACR2 mice. We confirmed Cre-dependent expression and function of ACR2 in the targeted neurons by immunohistochemistry and electrophysiological recordings in vitro, and confirmed physiological function using an in vivo behavioral experiment. Our results show that the LSL-ACR2 mouse strain can be applied for optogenetic inhibition of targeted neurons, particularly for long-lasting continuous inhibition, upon crossing with Cre-driver mouse strains. The LSL-ACR2 strain can be used to prepare transgenic mice with homogenous expression of ACR2 in targeted neurons with a high penetration ratio, good reproducibility, and no tissue invasion.
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15
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Maruo T, Mizutani K, Miyata M, Kuriu T, Sakakibara S, Takahashi H, Kida D, Maesaka K, Sugaya T, Sakane A, Sasaki T, Takai Y, Mandai K. s-Afadin binds to MAGUIN/Cnksr2 and regulates the localization of the AMPA receptor and glutamatergic synaptic response in hippocampal neurons. J Biol Chem 2023; 299:103040. [PMID: 36803960 PMCID: PMC10040811 DOI: 10.1016/j.jbc.2023.103040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/19/2023] Open
Abstract
A hippocampal mossy fiber synapse implicated in learning and memory is a complex structure in which a presynaptic bouton attaches to the dendritic trunk by puncta adherentia junctions (PAJs) and wraps multiply branched spines. The postsynaptic densities (PSDs) are localized at the heads of each of these spines and faces to the presynaptic active zones. We previously showed that the scaffolding protein afadin regulates the formation of the PAJs, PSDs, and active zones in the mossy fiber synapse. Afadin has two splice variants: l-afadin and s-afadin. l-Afadin, but not s-afadin, regulates the formation of the PAJs but the roles of s-afadin in synaptogenesis remain unknown. We found here that s-afadin more preferentially bound to MAGUIN (a product of the Cnksr2 gene) than l-afadin in vivo and in vitro. MAGUIN/CNKSR2 is one of the causative genes for nonsyndromic X-linked intellectual disability accompanied by epilepsy and aphasia. Genetic ablation of MAGUIN impaired PSD-95 localization and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic (AMPA) receptor surface accumulation in cultured hippocampal neurons. Our electrophysiological analysis revealed that the postsynaptic response to glutamate, but not its release from the presynapse, was impaired in the MAGUIN-deficient cultured hippocampal neurons. Furthermore, disruption of MAGUIN did not increase the seizure susceptibility to flurothyl, a GABAA receptor antagonist. These results indicate that s-afadin binds to MAGUIN and regulates the PSD-95-dependent cell surface localization of the AMPA receptor and glutamatergic synaptic responses in the hippocampal neurons and that MAGUIN is not involved in the induction of epileptic seizure by flurothyl in our mouse model.
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Affiliation(s)
- Tomohiko Maruo
- Department of Molecular and Cellular Neurobiology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa, Japan; Department of Biochemistry, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan; Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan; Department of Biochemistry, Tokushima University Graduate School of Medical Sciences, Tokushima, Japan
| | - Kiyohito Mizutani
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Muneaki Miyata
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Toshihiko Kuriu
- Research and Development Center, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Shotaro Sakakibara
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan; Department of Biochemistry, Tokushima University Graduate School of Medical Sciences, Tokushima, Japan
| | - Hatena Takahashi
- Department of Molecular and Cellular Neurobiology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa, Japan
| | - Daichi Kida
- Department of Molecular and Cellular Neurobiology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa, Japan
| | - Kouki Maesaka
- Department of Molecular and Cellular Neurobiology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa, Japan
| | - Tsukiko Sugaya
- Department of Biochemistry, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Ayuko Sakane
- Department of Biochemistry, Tokushima University Graduate School of Medical Sciences, Tokushima, Japan; Department of Interdisciplinary Researches for Medicine and Photonics, Institute of Post-LED Photonics, Tokushima University, Tokushima, Japan
| | - Takuya Sasaki
- Department of Biochemistry, Tokushima University Graduate School of Medical Sciences, Tokushima, Japan
| | - Yoshimi Takai
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.
| | - Kenji Mandai
- Department of Molecular and Cellular Neurobiology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa, Japan; Department of Biochemistry, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan.
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16
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Roland M, Berglas E, Pines R, Carata I, Castillo A, Nashed M, Sclafani A, Bodnar RJ. Differential patterns of opioid and dopamine D1 receptor antagonism on nutritive and non-nutritive sweetener intakes in C57BL/6:129 hybrid mice relative to inbred C57BL/6 and 129 mice. Pharmacol Biochem Behav 2023; 223:173514. [PMID: 36642390 DOI: 10.1016/j.pbb.2023.173514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/07/2023] [Accepted: 01/07/2023] [Indexed: 01/15/2023]
Abstract
Opioid and dopamine (DA) D1 receptor antagonists differentially reduce nutritive and non-nutritive sweetener intakes in inbred mouse strains. Sucrose intake was more effectively reduced by naltrexone in C57BL/6 (B6) mice relative to 129P3 (129) mice, but more effectively reduced by SCH23390 in 129 mice relative to B6 mice. Opioid and DA D1 antagonists differentially reduced saccharin intakes in B6 mice relative to other strains. Given these differential patterns in sweetener intake in B6 and 129 mice, the present study examined whether systemic naltrexone (0.01-5 mg/kg) and SCH23390 (50-1600 nmol/kg) reduced intakes of 10 % sucrose or 0.2 % saccharin solutions over a 120 min time course in first-generation hybrid mice (B6:129) of B6 and 129 parents and reduced low-nutritive sweetener intakes in 129 mice. Naltrexone (5 mg/kg) significantly reduced 10 % sucrose intake in B6:129 hybrid mice more like that of 129 than B6 mice. In contrast, SCH23390 (400-1600 nmol/kg) reduced 10 % sucrose intake in B6:129 hybrid mice more effectively than that observed in B6 or 129 parental strains. Because 129 mice consumed relatively low amounts of 0.2 % saccharin, they were tested with a more attractive low-nutritive solution containing 0.2 % saccharin and 2 % sucrose. Naltrexone failed to reduce saccharin intake in B6:129 hybrid mice but suppressed saccharin+sucrose intake in 129 mice more like that observed in B6 mice. SCH23390 similarly inhibited saccharin or saccharin+sucrose intakes in hybrid B6:129, 129, and B6 mice with B6 mice more resistant to the lowest SCH23390 dose. Thus, whereas sucrose intake in B6:129 hybrid mice exhibited similar sensitivity to opioid and to a lesser degree DA D1 antagonism to their 129, but not B6 parents, opioid and DA D1 mediation of low- and non-nutritive sweet intake produced unique profiles among B6:129 hybrid and B6 and 129 strains which does not support a simple heritability explanation.
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Affiliation(s)
- Matthew Roland
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Eli Berglas
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Rachel Pines
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Ion Carata
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Alexander Castillo
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Mirna Nashed
- Department of Psychology, Queens College of the City University of New York, United States of America
| | - Anthony Sclafani
- Department of Psychology, Brooklyn College of the City University of New York, United States of America; Psychology Doctoral Program, Graduate Center of the City University of New York, United States of America
| | - Richard J Bodnar
- Department of Psychology, Queens College of the City University of New York, United States of America; Psychology Doctoral Program, Graduate Center of the City University of New York, United States of America.
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17
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Hayashi Y, Shimizu I, Yoshida Y, Ikegami R, Suda M, Katsuumi G, Fujiki S, Ozaki K, Abe M, Sakimura K, Okuda S, Hayano T, Nakamura K, Walsh K, Jespersen NZ, Nielsen S, Scheele C, Minamino T. Coagulation factors promote brown adipose tissue dysfunction and abnormal systemic metabolism in obesity. iScience 2022; 25:104547. [PMID: 35754738 PMCID: PMC9218513 DOI: 10.1016/j.isci.2022.104547] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/11/2022] [Accepted: 06/02/2022] [Indexed: 12/31/2022] Open
Abstract
Brown adipose tissue (BAT) has a role in maintaining systemic metabolic health in rodents and humans. Here, we show that metabolic stress induces BAT to produce coagulation factors, which then-together with molecules derived from the circulation-promote BAT dysfunction and systemic glucose intolerance. When mice were fed a high-fat diet (HFD), the levels of tissue factor, coagulation Factor VII (FVII), activated coagulation Factor X (FXa), and protease-activated receptor 1 (PAR1) expression increased significantly in BAT. Genetic or pharmacological suppression of coagulation factor-PAR1 signaling in BAT ameliorated its whitening and improved thermogenic response and systemic glucose intolerance in mice with dietary obesity. Conversely, the activation of coagulation factor-PAR1 signaling in BAT caused mitochondrial dysfunction in brown adipocytes and systemic glucose intolerance in mice fed normal chow. These results indicate that BAT produces endogenous coagulation factors that mediate pleiotropic effects via PAR1 signaling under metabolic stress.
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Affiliation(s)
- Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Corresponding author
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Department of Advanced Senotherapeutics, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Shinya Fujiki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, 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
| | - 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
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Toshiya Hayano
- Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Shiga 525-8577 Japan
| | - Kazuhiro Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Kenneth Walsh
- Division of Cardiovascular Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Naja Zenius Jespersen
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
| | - Søren Nielsen
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
| | - Camilla Scheele
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
- Corresponding author
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18
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Li Z, Kanazashi H, Tokashiki Y, Fujikawa R, Okagaki A, Katoh S, Kojima K, Haruna K, Matsushita N, Ishikawa TO, Chen H, Yamamura K. TTR exon-humanized mouse optimal for verifying new therapies for FAP. Biochem Biophys Res Commun 2022; 599:69-74. [PMID: 35176627 DOI: 10.1016/j.bbrc.2022.02.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/09/2022] [Indexed: 11/21/2022]
Abstract
Familial amyloidotic polyneuropathy (FAP) is caused by a mutation in the transthyretin (TTR) gene. In addition, deposition of wild-type TTR can cause senile systemic amyloidosis (SSA). To date, we have produced several transgenic mouse models for FAP and SSA by introducing TTR genes with different promoters or mutations. However, mouse TTR can associate with human TTR to produce hybrid tetramers in transgenic mice. Thus, these transgenic mice cannot be used to test the efficacy of a new therapy. In this study, we attempted to construct an optimized mouse model to verify a new therapy. The TTR gene consists of 4 exons and 3 introns. We prepared two gRNAs, one for the exon 1 and the other for exon 4, and a single donor vector carrying the whole TTR gene in which mouse exons were replaced with human exons. Using these vectors, we produced a TTR exon-humanized mouse with human exons and mouse introns using genome editing technology. These TTR exon-humanized mice showed normal TTR expression patterns in terms of serum TTR level and spatial specificity. These TTR exon-humanized mice will be useful for devising new treatment methods for FAP, including gene therapy.
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Affiliation(s)
- Zhenghua Li
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China; Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, 860-0811, Japan; TransGenic, Inc., Fukuoka, 810-0001, Japan
| | | | | | - Rie Fujikawa
- Biosafety Research Center, Kobe, 650-0047, Japan
| | | | - Sho Katoh
- Biosafety Research Center, Kobe, 650-0047, Japan
| | - Kenta Kojima
- Biosafety Research Center, Kobe, 650-0047, Japan
| | - Kyoko Haruna
- Biosafety Research Center, Kobe, 650-0047, Japan
| | | | | | - Hong Chen
- Department of Pulmonary and Critical Care Medicine, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.
| | - Kenichi Yamamura
- Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, 860-0811, Japan; TransGenic, Inc., Fukuoka, 810-0001, Japan.
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19
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Uemura T, Suzuki-Kouyama E, Kawase S, Kurihara T, Yasumura M, Yoshida T, Fukai S, Yamazaki M, Fei P, Abe M, Watanabe M, Sakimura K, Mishina M, Tabuchi K. Neurexins play a crucial role in cerebellar granule cell survival by organizing autocrine machinery for neurotrophins. Cell Rep 2022; 39:110624. [PMID: 35385735 DOI: 10.1016/j.celrep.2022.110624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/22/2022] [Accepted: 03/15/2022] [Indexed: 01/22/2023] Open
Abstract
Neurexins (NRXNs) are key presynaptic cell adhesion molecules that regulate synapse formation and function via trans-synaptic interaction with postsynaptic ligands. Here, we generate cerebellar granule cell (CGC)-specific Nrxn triple-knockout (TKO) mice for complete deletion of all NRXNs. Unexpectedly, most CGCs die in these mice, and this requirement for NRXNs for cell survival is reproduced in cultured CGCs. The axons of cultured Nrxn TKO CGCs that are not in contact with a postsynaptic structure show defects in the formation of presynaptic protein clusters and in action-potential-induced Ca2+ influxes. These cells also show impaired secretion of depolarization-induced, fluorescence-tagged brain-derived neurotrophic factor (BDNF) from their axons, and the cell-survival defect is rescued by the application of BDNF. These results suggest that CGC survival is maintained by autocrine neurotrophic factors and that NRXNs organize the presynaptic protein clusters and the autocrine neurotrophic-factor secretory machinery independent of contact with postsynaptic ligands.
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Affiliation(s)
- Takeshi Uemura
- Division of Gene Research, Research Center for Advanced Science, Shinshu University, Nagano 390-8621, Japan; Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 390-8621, Japan; Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano 390-8621, Japan; Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; JST CREST, Saitama 332-0012, Japan.
| | - Emi Suzuki-Kouyama
- Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano 390-8621, Japan; JST CREST, Saitama 332-0012, Japan
| | - Shiori Kawase
- Division of Gene Research, Research Center for Advanced Science, Shinshu University, Nagano 390-8621, Japan; Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano 390-8621, Japan; JST CREST, Saitama 332-0012, Japan
| | - Taiga Kurihara
- Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano 390-8621, Japan
| | - Misato Yasumura
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Tomoyuki Yoshida
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Department of Molecular Neuroscience, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan; JST PRESTO, Saitama 332-0012, Japan
| | - Shuya Fukai
- JST CREST, Saitama 332-0012, Japan; Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Maya Yamazaki
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Peng Fei
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan; Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan; Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masayoshi Mishina
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Brain Science Laboratory, Research Organization of Science and Technology, Ritsumeikan University, Shiga 525-8577, Japan
| | - Katsuhiko Tabuchi
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 390-8621, Japan; Department of Molecular and Cellular Physiology, Institute of Medicine, Academic Assembly, Shinshu University, Nagano 390-8621, Japan; JST PRESTO, Saitama 332-0012, Japan.
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20
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Sakamoto M, Inoue M, Takeuchi A, Kobari S, Yokoyama T, Horigane SI, Takemoto-Kimura S, Abe M, Sakimura K, Kano M, Kitamura K, Fujii H, Bito H. A Flp-dependent G-CaMP9a transgenic mouse for neuronal imaging in vivo. CELL REPORTS METHODS 2022; 2:100168. [PMID: 35474964 PMCID: PMC9017135 DOI: 10.1016/j.crmeth.2022.100168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/09/2021] [Accepted: 01/21/2022] [Indexed: 12/16/2022]
Abstract
Genetically encoded calcium indicators (GECIs) are widely used to measure calcium transients in neuronal somata and processes, and their use enables the determination of action potential temporal series in a large population of neurons. Here, we generate a transgenic mouse line expressing a highly sensitive green GECI, G-CaMP9a, in a Flp-dependent manner in excitatory and inhibitory neuronal subpopulations downstream of a strong CAG promoter. Combining this reporter mouse with viral or mouse genetic Flp delivery methods produces a robust and stable G-CaMP9a expression in defined neuronal populations without detectable detrimental effects. In vivo two-photon imaging reveals spontaneous and sensory-evoked calcium transients in excitatory and inhibitory ensembles with cellular resolution. Our results show that this reporter line allows long-term, cell-type-specific investigation of neuronal activity with enhanced resolution in defined populations and facilitates dissecting complex dynamics of neural networks in vivo.
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Affiliation(s)
- Masayuki Sakamoto
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Optical Neural and Molecular Physiology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8507, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Kyoto 606-8507, Japan
| | - Masatoshi Inoue
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Atsuya Takeuchi
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Neurophysiology, School of Dentistry, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shigetaka Kobari
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tatsushi Yokoyama
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Optical Neural and Molecular Physiology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8507, Japan
| | - Shin-ichiro Horigane
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Neuroscience I, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi 464-8602, Japan
- Department of Molecular/Cellular Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Sayaka Takemoto-Kimura
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Kyoto 606-8507, Japan
- Department of Neuroscience I, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi 464-8602, Japan
- Department of Molecular/Cellular Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masanobu Kano
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuo Kitamura
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Neurophysiology, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan
| | - Hajime Fujii
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Haruhiko Bito
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Hongo7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
- International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Rattan A, White CL, Nelson S, Eismann M, Padilla-Quirarte H, Glover MA, Dileepan T, Marathe BM, Govorkova EA, Webby RJ, Richards KA, Sant AJ. Development of a Mouse Model to Explore CD4 T Cell Specificity, Phenotype, and Recruitment to the Lung after Influenza B Infection. Pathogens 2022; 11:251. [PMID: 35215193 PMCID: PMC8875387 DOI: 10.3390/pathogens11020251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 01/30/2023] Open
Abstract
The adaptive T cell response to influenza B virus is understudied, relative to influenza A virus, for which there has been considerable attention and progress for many decades. Here, we have developed and utilized the C57BL/6 mouse model of intranasal infection with influenza B (B/Brisbane/60/2008) virus and, using an iterative peptide discovery strategy, have identified a series of robustly elicited individual CD4 T cell peptide specificities. The CD4 T cell repertoire encompassed at least eleven major epitopes distributed across hemagglutinin, nucleoprotein, neuraminidase, and non-structural protein 1 and are readily detected in the draining lymph node, spleen, and lung. Within the lung, the CD4 T cells are localized to both lung vasculature and tissue but are highly enriched in the lung tissue after infection. When studied by flow cytometry and MHC class II: peptide tetramers, CD4 T cells express prototypical markers of tissue residency including CD69, CD103, and high surface levels of CD11a. Collectively, our studies will enable more sophisticated analyses of influenza B virus infection, where the fate and function of the influenza B-specific CD4 T cells elicited by infection and vaccination can be studied as well as the impact of anti-viral reagents and candidate vaccines on the abundance, functionality, and localization of the elicited CD4 T cells.
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Affiliation(s)
- Ajitanuj Rattan
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
| | - Chantelle L. White
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
| | - Sean Nelson
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
| | - Max Eismann
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
| | - Herbey Padilla-Quirarte
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Maryah A. Glover
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
| | - Thamotharampillai Dileepan
- Department of Microbiology and Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA;
| | - Bindumadhav M. Marathe
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.M.M.); (E.A.G.); (R.J.W.)
| | - Elena A. Govorkova
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.M.M.); (E.A.G.); (R.J.W.)
| | - Richard J. Webby
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (B.M.M.); (E.A.G.); (R.J.W.)
| | - Katherine A. Richards
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
- Center for Influenza Disease and Emergence Response (CIDER), University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Andrea J. Sant
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA; (A.R.); (C.L.W.); (S.N.); (M.E.); (M.A.G.); (K.A.R.)
- Center for Influenza Disease and Emergence Response (CIDER), University of Rochester Medical Center, Rochester, NY 14642, USA
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22
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Zhao Q, Koyama S, Yoshihara N, Takagi A, Komiyama E, Wada A, Oka A, Ikeda S. The Alopecia Areata Phenotype Is Induced by the Water Avoidance Stress Test In cchcr1-Deficient Mice. Biomedicines 2021; 9:biomedicines9070840. [PMID: 34356904 PMCID: PMC8301465 DOI: 10.3390/biomedicines9070840] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/11/2021] [Accepted: 07/15/2021] [Indexed: 11/16/2022] Open
Abstract
We recently discovered a nonsynonymous variant in the coiled-coil alpha-helical rod protein 1 (CCHCR1) gene within the alopecia areata (AA) risk haplotype. We also reported that the engineered mice with this risk allele exhibited. To investigate more about the involvement of the CCHCR1 gene in AA pathogenesis, we developed an AA model using C57BL/6N cchcr1 gene knockout mice. In this study, mice (6–8 weeks) were divided into two groups: cchcr1−/− mice and wild-type (WT) littermates. Both groups were subjected to a water avoidance stress (WAS) test. Eight weeks after the WAS test, 25% of cchcr1−/− mice exhibited non-inflammatory foci of alopecia on the dorsal skin. On the other hand, none of wild-type littermates cause hair loss. The foci resembled human AA in terms of gross morphology, trichoscopic findings and histological findings. Additionally, gene expression microarray analysis of cchcr1−/− mice revealed abnormalities of hair related genes compared to the control. Our results strongly suggest that CCHCR1 is associated with AA pathogenesis and that cchcr1−/− mice are a good model for investigating AA.
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Affiliation(s)
- Qiaofeng Zhao
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Satoshi Koyama
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Nagisa Yoshihara
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Atsushi Takagi
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Etsuko Komiyama
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Akino Wada
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
| | - Akira Oka
- The Institute of Medical Sciences, Tokai University, Kanagawa 259-1193, Japan;
| | - Shigaku Ikeda
- Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (Q.Z.); (S.K.); (N.Y.); (A.T.); (E.K.); (A.W.)
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
- Correspondence: ; Tel.: +81-3-5802-1089; Fax: +81-3-3813-2205
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23
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Taketomi Y, Endo Y, Higashi T, Murase R, Ono T, Taya C, Kobayashi T, Murakami M. Mast Cell-Specific Deletion of Group III Secreted Phospholipase A 2 Impairs Mast Cell Maturation and Functions. Cells 2021; 10:1691. [PMID: 34359862 PMCID: PMC8303318 DOI: 10.3390/cells10071691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 11/18/2022] Open
Abstract
Tissue-resident mast cells (MCs) have important roles in IgE-associated and -independent allergic reactions. Although microenvironmental alterations in MC phenotypes affect the susceptibility to allergy, understanding of the regulation of MC maturation is still incomplete. We previously reported that group III secreted phospholipase A2 (sPLA2-III) released from immature MCs is functionally coupled with lipocalin-type prostaglandin D2 (PGD2) synthase in neighboring fibroblasts to supply a microenvironmental pool of PGD2, which in turn acts on the PGD2 receptor DP1 on MCs to promote their proper maturation. In the present study, we reevaluated the role of sPLA2-III in MCs using a newly generated MC-specific Pla2g3-deficient mouse strain. Mice lacking sPLA2-III specifically in MCs, like those lacking the enzyme in all tissues, had immature MCs and displayed reduced local and systemic anaphylactic responses. Furthermore, MC-specific Pla2g3-deficient mice, as well as MC-deficient KitW-sh mice reconstituted with MCs prepared from global Pla2g3-null mice, displayed a significant reduction in irritant contact dermatitis (ICD) and an aggravation of contact hypersensitivity (CHS). The increased CHS response by Pla2g3 deficiency depended at least partly on the reduced expression of hematopoietic PGD2 synthase and thereby reduced production of PGD2 due to immaturity of MCs. Overall, our present study has confirmed that MC-secreted sPLA2-III promotes MC maturation, thereby facilitating acute anaphylactic and ICD reactions and limiting delayed CHS response.
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Affiliation(s)
- Yoshitaka Taketomi
- Center for Disease Biology and integrative Medicine, Laboratory of Microenvironmental and Metabolic Health Science, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; (Y.T.); (T.H.)
- Lipid Metabolism Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (Y.E.); (R.M.)
| | - Yuki Endo
- Lipid Metabolism Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (Y.E.); (R.M.)
- Department of Biology, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan;
| | - Takayoshi Higashi
- Center for Disease Biology and integrative Medicine, Laboratory of Microenvironmental and Metabolic Health Science, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; (Y.T.); (T.H.)
| | - Remi Murase
- Lipid Metabolism Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (Y.E.); (R.M.)
| | - Tomio Ono
- Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (T.O.); (C.T.)
| | - Choji Taya
- Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (T.O.); (C.T.)
| | - Tetsuyuki Kobayashi
- Department of Biology, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan;
| | - Makoto Murakami
- Center for Disease Biology and integrative Medicine, Laboratory of Microenvironmental and Metabolic Health Science, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; (Y.T.); (T.H.)
- Lipid Metabolism Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan; (Y.E.); (R.M.)
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24
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PKCδ deficiency inhibits fetal development and is associated with heart elastic fiber hyperplasia and lung inflammation in adult PKCδ knockout mice. PLoS One 2021; 16:e0253912. [PMID: 34197550 PMCID: PMC8248728 DOI: 10.1371/journal.pone.0253912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
Protein kinase C-delta (PKCδ) has a caspase-3 recognition sequence in its structure, suggesting its involvement in apoptosis. In addition, PKCδ was recently reported to function as an anti-cancer factor. The generation of a PKCδ knockout mouse model indicated that PKCδ plays a role in B cell homeostasis. However, the Pkcrd gene, which is regulated through complex transcription, produces multiple proteins via alternative splicing. Since gene mutations can result in the loss of function of molecular species required for each tissue, in the present study, conditional PKCδ knockout mice lacking PKCδI, II, IV, V, VI, and VII were generated to enable tissue-specific deletion of PKCδ using a suitable Cre mouse. We generated PKCδ-null mice that lacked whole-body expression of PKCδ. PKCδ+/- parental mice gave birth to only 3.4% PKCδ-/- offsprings that deviated significantly from the expected Mendelian ratio (χ2(2) = 101.7, P < 0.001). Examination of mice on embryonic day 11.5 (E11.5) showed the proportion of PKCδ-/- mice implanted in the uterus in accordance with Mendelian rules; however, approximately 70% of the fetuses did not survive at E11.5. PKCδ-/- mice that survived until adulthood showed enlarged spleens, with some having cardiac and pulmonary abnormalities. Our findings suggest that the lack of PKCδ may have harmful effects on fetal development, and heart and lung functions after birth. Furthermore, our study provides a reference for future studies on PKCδ deficient mice that would elucidate the effects of the multiple protein variants in mice and decipher the roles of PKCδ in various diseases.
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25
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Yang J, Gong Y, Xu W, Li L, Shi Z, Wang Q, He Y, Zhang C, Luo C, Fang Z, Yang Y. Smad3 gene C-terminal phosphorylation site mutation exacerbates CCl 4-induced hepatic fibrogenesis by promoting pSmad2L/C-mediated signaling transduction. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:1779-1786. [PMID: 34191114 DOI: 10.1007/s00210-021-02114-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/15/2021] [Indexed: 11/26/2022]
Abstract
Current researches have confirmed that Smads, mediators of TGF-β signaling, are strictly controlled by domain-specific site phosphorylation in the process of hepatic disease. Usually, Smad3 phospho-isoform pSmad3L and pSmad3C are reversible and antagonistic; pSmad2L/C could act together with pSmad3L by stimulating PAI-1 expression and ECM synthesis to transmit fibrogenic signals. Our recent study found that pSmad3C mutation is supposed to perform a vigorous role on the early phase of liver injury and abates salvianolic acid B's anti-hepatic fibrotic-carcinogenesis. However, whether pSmad3C mutation expedites pSmad2L/C-mediated signaling transduction during hepatic fibrogenesis remains vague. Presently, Smad3 gene C-terminal phosphorylation site mutation heterozygote (pSmad3C+/-) mice were constructed to probe if and how pSmad3C retards CCl4-induced hepatic fibrogenesis by inhibiting pSmad2L/C-mediated signaling transduction. Twelve 6-week-old pSmad3C+/- C57BL/6J mice were intraperitoneally injection with CCl4 for 6 weeks to induce liver fibrogenesis. Results showed that pSmad3C mutation aggravates the relative liver weight, biochemical parameters, collagenous fibers and fibrotic septa formation, contributes to fibrogenesis in HT-CCl4 mice. Furthermore, fibrotic-related proteins TGF-β1, pSmad2C, pSmad2L, and PAI-1 were also increased in CCl4-induced pSmad3C+/- mice. These results suggest that pSmad3C mutation exacerbates hepatic fibrogenesis which relates to intensifying pSmad2L/C-mediated signaling transduction.
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Affiliation(s)
- Juan Yang
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Yongfang Gong
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Wenjing Xu
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Lili Li
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Zhenghao Shi
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Qin Wang
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Yinghao He
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Chong Zhang
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Chenchen Luo
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Zhirui Fang
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China
| | - Yan Yang
- Department of Pharmacology, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, 81 Meishan Road, Hefei, 230032, China.
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26
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Utsunomiya S, Kishi Y, Tsuboi M, Kawaguchi D, Gotoh Y, Abe M, Sakimura K, Maeda K, Takemoto H. Ezh1 regulates expression of Cpg15/Neuritin in mouse cortical neurons. Drug Discov Ther 2021; 15:55-65. [PMID: 33678755 DOI: 10.5582/ddt.2021.01017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Immature neurons undergo morphological and physiological maturation in order to establish neuronal networks. During neuronal maturation, a large number of genes change their transcriptional levels, and these changes may be mediated by chromatin modifiers. In this study, we found that the level of Ezh1, a component of Polycomb repressive complex 2 (PRC2), increases during neuronal maturation in mouse neocortical culture. In addition, conditional knockout of Ezh1 in post-mitotic excitatory neurons leads to downregulation of a set of genes related to neuronal maturation. Moreover, the locus encoding Cpg15/Neuritin (Nrn1), which is regulated by neuronal activity and implicated in stabilization and maturation of excitatory synapses, is a direct target of Ezh1 in cortical neurons. Together, these results suggest that elevated expression of Ezh1 contributes to maturation of cortical neurons.
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Affiliation(s)
- Shun Utsunomiya
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan.,Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.,Neuroscience 2, Laboratory for Drug Discovery and Disease Research, Shionogi & Co. Ltd., Toyonaka, Osaka, Japan.,Business-Academia Collaborative Laboratory (Shionogi), Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Yusuke Kishi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Masafumi Tsuboi
- Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Daichi Kawaguchi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Yukiko Gotoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan.,International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, Tokyo, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kazuma Maeda
- Neuroscience 2, Laboratory for Drug Discovery and Disease Research, Shionogi & Co. Ltd., Toyonaka, Osaka, Japan.,Business-Academia Collaborative Laboratory (Shionogi), Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Takemoto
- Neuroscience 2, Laboratory for Drug Discovery and Disease Research, Shionogi & Co. Ltd., Toyonaka, Osaka, Japan.,Business-Academia Collaborative Laboratory (Shionogi), Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
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27
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Iida I, Konno K, Natsume R, Abe M, Watanabe M, Sakimura K, Terunuma M. A comparative analysis of kainate receptor GluK2 and GluK5 knockout mice in a pure genetic background. Behav Brain Res 2021; 405:113194. [PMID: 33631192 DOI: 10.1016/j.bbr.2021.113194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/21/2021] [Accepted: 02/15/2021] [Indexed: 11/21/2022]
Abstract
Kainate receptors (KARs) are members of the glutamate receptor family that regulate synaptic function in the brain. Although they are known to be associated with psychiatric disorders, how they are involved in these disorders remains unclear. KARs are tetrameric channels assembled from a combination of GluK1-5 subunits. Among these, GluK2 and GluK5 subunits are the major heteromeric subunits in the brain. To determine the functional similarities and differences between GluK2 and GluK5 subunits, we generated GluK2 KO and GluK5 KO mice on a C57BL/6N background, a well-characterized inbred strain, and compared their behavioral phenotypes. We found that GluK2 KO and GluK5 KO mice exhibited the same phenotypes in many tests, such as reduced locomotor activity, impaired motor function, and enhanced depressive-like behavior. No change was observed in motor learning, anxiety-like behavior, or sociability. Additionally, we identified subunit-specific phenotypes, such as reduced motivation toward their environment in GluK2 KO mice and an enhancement in the contextual memory in GluK5 KO mice. These results revealed that GluK2 and GluK5 subunits not only function in a coordinated manner but also have a subunit-specific role in regulating behavior. To summarize, we demonstrated subunit-specific and common behavioral effects of GluK2 and GluK5 subunits for the first time. Moreover, to the best of our knowledge, this is the first evidence of the involvement of the GluK5 subunit in the expression of depressive-like behavior and contextual memory, which strongly indicates its role in psychiatric disorders.
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Affiliation(s)
- Izumi Iida
- Division of Oral Biochemistry, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan; Research Center for Advanced Oral Science, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Kohtarou Konno
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Rie Natsume
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata 951-8585, Japan.
| | - Miho Terunuma
- Division of Oral Biochemistry, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan.
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28
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Matsuda H, Ito Y, Hosono K, Tsuru S, Inoue T, Nakamoto S, Kurashige C, Hirashima M, Narumiya S, Okamoto H, Majima M. Roles of Thromboxane Receptor Signaling in Enhancement of Lipopolysaccharide-Induced Lymphangiogenesis and Lymphatic Drainage Function in Diaphragm. Arterioscler Thromb Vasc Biol 2021; 41:1390-1407. [PMID: 33567865 DOI: 10.1161/atvbaha.120.315507] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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MESH Headings
- Animals
- Cells, Cultured
- Diaphragm/immunology
- Diaphragm/metabolism
- Disease Models, Animal
- Humans
- Inflammation/chemically induced
- Inflammation/immunology
- Inflammation/metabolism
- Inflammation/physiopathology
- Lipopolysaccharides
- Lymphangiogenesis/drug effects
- Lymphatic Vessels/drug effects
- Lymphatic Vessels/metabolism
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Receptors, Thromboxane A2, Prostaglandin H2/genetics
- Receptors, Thromboxane A2, Prostaglandin H2/metabolism
- Signal Transduction
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Thromboxane A2/metabolism
- Vascular Endothelial Growth Factor C/metabolism
- Vascular Endothelial Growth Factor D/metabolism
- Mice
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Affiliation(s)
- Hiromi Matsuda
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Yoshiya Ito
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Kanako Hosono
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Seri Tsuru
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Tomoyoshi Inoue
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Shuji Nakamoto
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Center for Innovation in Immunoregulation Technology and Therapeutics, Kyoto University Graduate School of Medicine, Japan (S.N.)
| | - Chie Kurashige
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Masanori Hirashima
- Division of Pharmacology, Graduate School of Medical and Dental Sciences, Niigata University, Japan (M.H.)
| | - Shuh Narumiya
- Center for Innovation in Immunoregulation Technology and Therapeutics, Kyoto University Graduate School of Medicine, Japan (S.N.)
| | - Hirotsugu Okamoto
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Masataka Majima
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
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29
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Jitsuki-Takahashi A, Jitsuki S, Yamashita N, Kawamura M, Abe M, Sakimura K, Sano A, Nakamura F, Goshima Y, Takahashi T. Activity-induced secretion of semaphorin 3A mediates learning. Eur J Neurosci 2021; 53:3279-3293. [PMID: 33772906 PMCID: PMC8252788 DOI: 10.1111/ejn.15210] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/31/2022]
Abstract
The semaphorin family is a well‐characterized family of secreted or membrane‐bound proteins that are involved in activity‐independent neurodevelopmental processes, such as axon guidance, cell migration, and immune functions. Although semaphorins have recently been demonstrated to regulate activity‐dependent synaptic scaling, their roles in Hebbian synaptic plasticity as well as learning and memory remain poorly understood. Here, using a rodent model, we found that an inhibitory avoidance task, a hippocampus‐dependent contextual learning paradigm, increased secretion of semaphorin 3A in the hippocampus. Furthermore, the secreted semaphorin 3A in the hippocampus mediated contextual memory formation likely by driving AMPA receptors into hippocampal synapses via the neuropilin1–plexin A4–semaphorin receptor complex. This signaling process involves alteration of the phosphorylation status of collapsin response mediator protein 2, which has been characterized as a downstream molecule in semaphorin signaling. These findings implicate semaphorin family as a regulator of Hebbian synaptic plasticity and learning.
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Affiliation(s)
- Aoi Jitsuki-Takahashi
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Biochemistry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Susumu Jitsuki
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Naoya Yamashita
- Department of Pharmacology, Juntendo University School of Medicine, Tokyo, Japan
| | - Meiko Kawamura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Akane Sano
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Fumio Nakamura
- Department of Biochemistry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Yoshio Goshima
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Takuya Takahashi
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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30
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Bertrand JA, Woodward DF, Sherwood JM, Spenlehauer A, Silvestri C, Piscitelli F, Marzo VD, Yamazaki M, Sakimura K, Inoue Y, Watanabe K, Overby DR. Deletion of the gene encoding prostamide/prostaglandin F synthase reveals an important role in regulating intraocular pressure. Prostaglandins Leukot Essent Fatty Acids 2021; 165:102235. [PMID: 33418484 PMCID: PMC9251352 DOI: 10.1016/j.plefa.2020.102235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 11/22/2020] [Accepted: 12/15/2020] [Indexed: 11/20/2022]
Abstract
Prostamide/prostaglandin F synthase (PM/PGFS) is an enzyme with very narrow substrate specificity and is dedicated to the biosynthesis of prostamide F2α and prostaglandin F2α (PGF2α.). The importance of this enzyme, relative to the aldo-keto reductase (AKR) series, in providing functional tissue prostamide F2α levels was determined by creating a line of PM/PGFS gene deleted mice. Deletion of the gene encoding PM/PGFS (Fam213b / Prxl2b) was accomplished by a two exon disruption. Prostamide F2α levels in wild type (WT) and PM/PGFS knock-out (KO) mice were determined by LC/MS/MS. Deletion of Fam213b (Prxl2b) had no observed effect on behavior, appetite, or fertility. In contrast, tonometrically measured intraocular pressure was significantly elevated by approximately 4 mmHg in PM/PGFS KO mice compared to littermate WT mice. Outflow facility was measured in enucleated mouse eyes using the iPerfusion system. No effect on pressure dependent outflow facility occurred, which is consistent with the effects of prostamide F2α and PGF2α increasing outflow through the unconventional pathway. The elevation of intraocular pressure caused by deletion of the gene encoding the PM/PGFS enzyme likely results from a diversion of the endoperoxide precursor pathway to provide increased levels of those prostanoids known to raise intraocular pressure, namely prostaglandin D2 (PGD2) and thromboxane A2 (TxA2). It follows that PM/PGFS may serve an important regulatory role in the eye by providing PGF2α and prostamide F2α to constrain the influence of those prostanoids that raise intraocular pressure.
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Affiliation(s)
- Jacques A Bertrand
- Dept. of Bioengineering, Imperial College London, Prince Consort Road, South Kensington, London, SW7 2AZ, United Kingdom
| | - David F Woodward
- Dept. of Bioengineering, Imperial College London, Prince Consort Road, South Kensington, London, SW7 2AZ, United Kingdom; JeniVision Inc., 5270, California Ave., Irvine, CA 92617, United States.
| | - Joseph M Sherwood
- Dept. of Bioengineering, Imperial College London, Prince Consort Road, South Kensington, London, SW7 2AZ, United Kingdom
| | - Alice Spenlehauer
- Dept. of Bioengineering, Imperial College London, Prince Consort Road, South Kensington, London, SW7 2AZ, United Kingdom
| | - Cristoforo Silvestri
- Département de Médecine, Université Laval, 1050 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6; Institut universitaire de cardiologie et de pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada, G1V 4G5
| | - Fabiana Piscitelli
- Institute of Biomolecular Chemistry, Via Campi Flegrei, 34 80078 Pozzuoli (NA), Italy
| | - Vincenzo Di Marzo
- Département de Médecine, Université Laval, 1050 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6; Institut universitaire de cardiologie et de pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada, G1V 4G5; Institute of Biomolecular Chemistry, Via Campi Flegrei, 34 80078 Pozzuoli (NA), Italy; Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, 2425 Rue de l'Agriculture Bureau 1122, Québec, QC, Canada, G1V 0A6; Institut sur la Nutrition et les Aliments Fonctionnels, 440 Boulevard Hochelaga, Québec, QC, Canada, G1V 0A6
| | - Maya Yamazaki
- Dept. of Cellular Neurobiology (currently Dept. of Animal Model Development), Brain Research Institute, Niigata University, Niigata, 951-8585 Japan; Dept of Neurology, University of California at San Francisco, San Francisco, CA, United States
| | - Kenji Sakimura
- Dept. of Cellular Neurobiology (currently Dept. of Animal Model Development), Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Yoko Inoue
- Dept. of Cellular Neurobiology (currently Dept. of Animal Model Development), Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Kikuko Watanabe
- Faculty of Nutrition, Kobe Gakuin University, Kobe, 651-2180, Japan
| | - Darryl R Overby
- Dept. of Bioengineering, Imperial College London, Prince Consort Road, South Kensington, London, SW7 2AZ, United Kingdom
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31
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Ikeda H, Yonemochi N, Mikami R, Abe M, Kawamura M, Natsume R, Sakimura K, Waddington JL, Kamei J. Central dopamine D 2 receptors regulate plasma glucose levels in mice through autonomic nerves. Sci Rep 2020; 10:22347. [PMID: 33339892 PMCID: PMC7749102 DOI: 10.1038/s41598-020-79292-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/07/2020] [Indexed: 02/03/2023] Open
Abstract
Recent evidence suggests that the central nervous system (CNS) regulates plasma glucose levels, but the underlying mechanism is unclear. The present study investigated the role of dopaminergic function in the CNS in regulation of plasma glucose levels in mice. I.c.v. injection of neither the dopamine D1 receptor agonist SKF 38393 nor the antagonist SCH 23390 influenced plasma glucose levels. In contrast, i.c.v. injection of both the dopamine D2 receptor agonist quinpirole and the antagonist l-sulpiride increased plasma glucose levels. Hyperglycemia induced by quinpirole and l-sulpiride was absent in dopamine D2 receptor knockout mice. I.c.v. injection of quinpirole and l-sulpiride each increased mRNA levels of hepatic glucose-6-phosphatase and phosphoenolpyruvate carboxykinase, which are the key enzymes for hepatic gluconeogenesis. Systemic injection of the β2 adrenoceptor antagonist ICI 118,551 inhibited hyperglycemia induced by l-sulpiride, but not by quinpirole. In contrast, hyperglycemia induced by quinpirole, but not by l-sulpiride, was inhibited by hepatic vagotomy. These results suggest that stimulation of central dopamine D2 receptors increases plasma glucose level by increasing hepatic glucose production through parasympathetic nerves, whereas inhibition of central dopamine D2 receptors increases plasma glucose level by increasing hepatic glucose production through sympathetic nerves.
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Affiliation(s)
- Hiroko Ikeda
- Department of Pathophysiology and Therapeutics, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Naomi Yonemochi
- Department of Pathophysiology and Therapeutics, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Risa Mikami
- Department of Pathophysiology and Therapeutics, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Manabu Abe
- Department of Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Meiko Kawamura
- Department of Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Rie Natsume
- Department of Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Kenji Sakimura
- Department of Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - John L Waddington
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Junzo Kamei
- Department of Pathophysiology and Therapeutics, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
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Ikegaya S, Iga Y, Mikawa S, Zhou L, Abe M, Sakimura K, Sato K, Yamagishi S. Decreased Proliferation in the Neurogenic Niche, Disorganized Neuroblast Migration, and Increased Oligodendrogenesis in Adult Netrin-5-Deficient Mice. Front Neurosci 2020; 14:570974. [PMID: 33324143 PMCID: PMC7726356 DOI: 10.3389/fnins.2020.570974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022] Open
Abstract
In the adult mouse brain, neurogenesis occurs mainly in the ventricular-subventricular zone (V-SVZ) and the subgranular zone of the hippocampal dentate gyrus. Neuroblasts generated in the V-SVZ migrate to the olfactory bulb via the rostral migratory stream (RMS) in response to guidance molecules, such as netrin-1. We previously showed that the related netrin-5 (NTN5) is expressed in Mash1-positive transit-amplifying cells and doublecortin-positive neuroblasts in the granule cell layer of the olfactory bulb, the RMS, and the subgranular zone of the adult mouse brain. However, the precise role of NTN5 in adult neurogenesis has not been investigated. In this study, we show that proliferation in the neurogenic niche is impaired in NTN5 knockout mice. The number of proliferating (EdU-labeled) cells in NTN5 KO mice was significantly lower in the V-SVZ, whereas the number of Ki67-positive proliferating cells was unchanged, suggesting a longer cell cycle and decreased cell division in NTN5 KO mice. The number of EdU-labeled cells in the RMS and olfactory bulb was unchanged. By contrast, the numbers of EdU-labeled cells in the cortex, basal ganglia/lateral septal nucleus, and corpus callosum/anterior commissure were increased, which largely represented oligodendrocyte lineage cells. Lastly, we found that chain migration in the RMS of NTN5 KO mice was disorganized. These findings suggest that NTN5 may play important roles in promoting proliferation in the V-SVZ niche, organizing proper chain migration in the RMS, and suppressing oligodendrogenesis in the brain.
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Affiliation(s)
- Shunsuke Ikegaya
- Department of Organ and Tissue Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yurika Iga
- Department of Organ and Tissue Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Sumiko Mikawa
- Department of Organ and Tissue Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Li Zhou
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan.,Center for Coordination of Research Facilities, Institute for Research Promotion, Niigata University, Niigata, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan.,Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 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
| | - Kohji Sato
- Department of Organ and Tissue Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Satoru Yamagishi
- Department of Organ and Tissue Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Matsuoka T, Yamasaki M, Abe M, Matsuda Y, Morino H, Kawakami H, Sakimura K, Watanabe M, Hashimoto K. Kv11 (ether-à-go-go-related gene) voltage-dependent K + channels promote resonance and oscillation of subthreshold membrane potentials. J Physiol 2020; 599:547-569. [PMID: 33151574 PMCID: PMC7839749 DOI: 10.1113/jp280342] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 11/02/2020] [Indexed: 12/11/2022] Open
Abstract
Key points Some ion channels are known to behave as inductors and make up the parallel resonant circuit in the plasma membrane of neurons, which enables neurons to respond to current inputs with a specific frequency (so‐called ‘resonant properties’). Here, we report that heterologous expression of mouse Kv11 voltage‐dependent K+ channels generate resonance and oscillation at depolarized membrane potentials in HEK293 cells; expressions of individual Kv11 subtypes generate resonance and oscillation with different frequency properties. Kv11.3‐expressing HEK293 cells exhibited transient conductance changes that opposed the current changes induced by voltage steps; this probably enables Kv11 channels to behave like an inductor. The resonance and oscillation of inferior olivary neurons were impaired at the resting membrane potential in Kv11.3 knockout mice. This study helps to elucidate basic ion channel properties that are crucial for the frequency responses of neurons.
Abstract The plasma membranes of some neurons preferentially respond to current inputs with a specific frequency, and output as large voltage changes. This property is called resonance, and is thought to be mediated by ion channels that show inductor‐like behaviour. However, details of the candidate ion channels remain unclear. In this study, we mainly focused on the functional roles of Kv11 potassium (K+) channels, encoded by ether‐á‐go‐go‐related genes, in resonance in mouse inferior olivary (IO) neurons. We transfected HEK293 cells with long or short splice variants of Kv11.1 (Merg1a and Merg1b) or Kv11.3, and examined membrane properties using whole‐cell recording. Transfection with Kv11 channels reproduced resonance at membrane potentials depolarized from the resting state. Frequency ranges of Kv11.3‐, Kv11.1(Merg1b)‐ and Kv11.1(Merg1a)‐expressing cells were 2–6 Hz, 2–4 Hz, and 0.6–0.8 Hz, respectively. Responses of Kv11.3 currents to step voltage changes were essentially similar to those of inductor currents in the resistor–inductor–capacitor circuit. Furthermore, Kv11 transfections generated membrane potential oscillations. We also confirmed the contribution of HCN1 channels as a major mediator of resonance at more hyperpolarized potentials by transfection into HEK293 cells. The Kv11 current kinetics and properties of Kv11‐dependent resonance suggested that Kv11.3 mediated resonance in IO neurons. This finding was confirmed by the impairment of resonance and oscillation at –30 to –60 mV in Kcnh7 (Kv11.3) knockout mice. These results suggest that Kv11 channels have important roles in inducing frequency‐dependent responses in a subtype‐dependent manner from resting to depolarized membrane potentials. Some ion channels are known to behave as inductors and make up the parallel resonant circuit in the plasma membrane of neurons, which enables neurons to respond to current inputs with a specific frequency (so‐called ‘resonant properties’). Here, we report that heterologous expression of mouse Kv11 voltage‐dependent K+ channels generate resonance and oscillation at depolarized membrane potentials in HEK293 cells; expressions of individual Kv11 subtypes generate resonance and oscillation with different frequency properties. Kv11.3‐expressing HEK293 cells exhibited transient conductance changes that opposed the current changes induced by voltage steps; this probably enables Kv11 channels to behave like an inductor. The resonance and oscillation of inferior olivary neurons were impaired at the resting membrane potential in Kv11.3 knockout mice. This study helps to elucidate basic ion channel properties that are crucial for the frequency responses of neurons.
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Affiliation(s)
- Toshinori Matsuoka
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Miwako Yamasaki
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Yukiko Matsuda
- Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Hiroyuki Morino
- Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Hideshi Kawakami
- Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Kouichi Hashimoto
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Sato Y, Rahman MM, Haneda M, Tsuyama T, Mizumoto T, Yoshizawa T, Kitamura T, Gonzalez FJ, Yamamura KI, Yamagata K. HNF1α controls glucagon secretion in pancreatic α-cells through modulation of SGLT1. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165898. [DOI: 10.1016/j.bbadis.2020.165898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 06/30/2020] [Accepted: 07/15/2020] [Indexed: 12/12/2022]
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Chiu AM, Wang J, Fiske MP, Hubalkova P, Barse L, Gray JA, Sanz-Clemente A. NMDAR-Activated PP1 Dephosphorylates GluN2B to Modulate NMDAR Synaptic Content. Cell Rep 2020; 28:332-341.e5. [PMID: 31291571 PMCID: PMC6639021 DOI: 10.1016/j.celrep.2019.06.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/09/2019] [Accepted: 06/07/2019] [Indexed: 01/07/2023] Open
Abstract
In mature neurons, postsynaptic N-methyl-D-aspartate receptors (NMDARs) are segregated into two populations, synaptic and extrasynaptic, which differ in localization, function, and associated intracellular cascades. These two pools are connected via lateral diffusion, and receptor exchange between them modulates synaptic NMDAR content. Here, we identify the phosphorylation of the PDZ-ligand of the GluN2B subunit of NMDARs (at S1480) as a critical determinant in dynamically controlling NMDAR synaptic content. We find that phosphorylation of GluN2B at S1480 maintains NMDARs at extrasynaptic membranes as part of a protein complex containing protein phosphatase 1 (PP1). Global activation of NMDARs leads to the activation of PP1, which mediates dephosphorylation of GluN2B at S1480 to promote an increase in synaptic NMDAR content. Thus, PP1-mediated dephosphorylation of the GluN2B PDZ-ligand modulates the synaptic expression of NMDARs in mature neurons in an activity-dependent manner, a process with profound consequences for synaptic and structural plasticity, metaplasticity, and synaptic neurotransmission. The dynamic regulation of synaptically expressed NMDA receptors (NMDARs) is essential for synaptic function. Here, Chiu et al. describe a mechanism controlling this process in mature neurons by showing that increases in NMDAR synaptic content are driven by PP1-mediated dephosphorylation of extrasynaptic NMDARs within their GluN2B PDZ-ligands.
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Affiliation(s)
- Andrew M Chiu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jiejie Wang
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Neurology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Michael P Fiske
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Pavla Hubalkova
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Cellular Neurophysiology, Institute of Physiology CAS, Prague 142 20, Czech Republic
| | - Levi Barse
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - John A Gray
- Center for Neuroscience, University of California, Davis, Davis, CA 95618, USA
| | - Antonio Sanz-Clemente
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Hirohashi K, Ohashi S, Amanuma Y, Nakai Y, Ida T, Baba K, Mitani Y, Mizumoto A, Yamamoto Y, Kikuchi O, Matsubara J, Yamada A, Miyamoto S, Seno H, Matsuda T, Muto M. Protective effects of Alda-1, an ALDH2 activator, on alcohol-derived DNA damage in the esophagus of human ALDH2*2 (Glu504Lys) knock-in mice. Carcinogenesis 2020; 41:194-202. [PMID: 31074772 PMCID: PMC7175241 DOI: 10.1093/carcin/bgz091] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 04/15/2019] [Accepted: 05/09/2019] [Indexed: 12/15/2022] Open
Abstract
Alcohol consumption is the key risk factor for the development of esophageal squamous cell carcinoma (ESCC), and acetaldehyde, a metabolite of alcohol, is an alcohol-derived major carcinogen that causes DNA damage. Aldehyde dehydrogenase2 (ALDH2) is an enzyme that detoxifies acetaldehyde, and its activity is reduced by ALDH2 gene polymorphism. Reduction in ALDH2 activity increases blood, salivary and breath acetaldehyde levels after alcohol intake, and it is deeply associated with the development of ESCC. Heavy alcohol consumption in individuals with ALDH2 gene polymorphism significantly elevates the risk of ESCC; however, effective prevention has not been established yet. In this study, we investigated the protective effects of Alda-1, a small molecule ALDH2 activator, on alcohol-mediated esophageal DNA damage. Here, we generated novel genetically engineered knock-in mice that express the human ALDH2*1 (wild-type allele) or ALDH2*2 gene (mutant allele). Those mice were crossed, and human ALDH2*1/*1, ALDH2*1/*2 and ALDH2*2/*2 knock-in mice were established. They were given 10% ethanol for 7 days in the presence or absence of Alda-1, and we measured the levels of esophageal DNA damage, represented by DNA adduct (N2-ethylidene-2′-deoxyguanosine). Alda-1 significantly increased hepatic ALDH2 activity both in human ALDH2*1/*2 and/or ALDH2*2/*2 knock-in mice and reduced esophageal DNA damage levels after alcohol drinking. Conversely, cyanamide, an ALDH2-inhibitor, significantly exacerbated esophageal DNA adduct level in C57BL/6N mice induced by alcohol drinking. These results indicate the protective effects of ALDH2 activation by Alda-1 on esophageal DNA damage levels in individuals with ALDH2 gene polymorphism, providing a new insight into acetaldehyde-mediated esophageal carcinogenesis and prevention.
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Affiliation(s)
- Kenshiro Hirohashi
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Shinya Ohashi
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Yusuke Amanuma
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Yukie Nakai
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Tomomi Ida
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Kiichiro Baba
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Yosuke Mitani
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Ayaka Mizumoto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Yoshihiro Yamamoto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Osamu Kikuchi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Junichi Matsubara
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Atsushi Yamada
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Shin’ichi Miyamoto
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Tomonari Matsuda
- Research Center for Environmental Quality Management, Kyoto University, Yumihama, Otsu, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
- To whom correspondence should be addressed. Tel: +81 75 751 4592; Fax:+81 75 751 4594;
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Nakamoto C, Kawamura M, Nakatsukasa E, Natsume R, Takao K, Watanabe M, Abe M, Takeuchi T, Sakimura K. GluD1 knockout mice with a pure C57BL/6N background show impaired fear memory, social interaction, and enhanced depressive-like behavior. PLoS One 2020; 15:e0229288. [PMID: 32078638 PMCID: PMC7032715 DOI: 10.1371/journal.pone.0229288] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/03/2020] [Indexed: 01/07/2023] Open
Abstract
The GluD1 gene is associated with susceptibility for schizophrenia, autism, depression, and bipolar disorder. However, the function of GluD1 and how it is involved in these conditions remain elusive. In this study, we generated a Grid1 gene-knockout (GluD1-KO) mouse line with a pure C57BL/6N genetic background and performed several behavioral analyses. Compared to a control group, GluD1-KO mice showed no significant anxiety-related behavioral differences, evaluated using behavior in an open field, elevated plus maze, a light-dark transition test, the resident-intruder test of aggression and sensorimotor gating evaluated by the prepulse inhibition test. However, GluD1-KO mice showed (1) higher locomotor activity in the open field, (2) decreased sociability and social novelty preference in the three-chambered social interaction test, (3) impaired memory in contextual, but not cued fear conditioning tests, and (4) enhanced depressive-like behavior in a forced swim test. Pharmacological studies revealed that enhanced depressive-like behavior in GluD1-KO mice was restored by the serotonin reuptake inhibitors imipramine and fluoxetine, but not the norepinephrine transporter inhibitor desipramine. In addition, biochemical analysis revealed no significant difference in protein expression levels, such as other glutamate receptors in the synaptosome and postsynaptic densities prepared from the frontal cortex and the hippocampus. These results suggest that GluD1 plays critical roles in fear memory, sociability, and depressive-like behavior.
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Affiliation(s)
- Chihiro Nakamoto
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Danish Research Institute of Translational Neuroscience–DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
| | - Meiko Kawamura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Ena Nakatsukasa
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Rie Natsume
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
| | - Keizo Takao
- Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan
- Life Science Research Center, University of Toyama, Toyama, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
- * E-mail: (TT); (MA)
| | - Tomonori Takeuchi
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Danish Research Institute of Translational Neuroscience–DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
- * E-mail: (TT); (MA)
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan
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38
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Morikawa M, Tanaka Y, Cho HS, Yoshihara M, Hirokawa N. The Molecular Motor KIF21B Mediates Synaptic Plasticity and Fear Extinction by Terminating Rac1 Activation. Cell Rep 2019; 23:3864-3877. [PMID: 29949770 DOI: 10.1016/j.celrep.2018.05.089] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/16/2018] [Accepted: 05/25/2018] [Indexed: 12/15/2022] Open
Abstract
Fear extinction is a component of cognitive flexibility that is relevant for important psychiatric diseases, but its molecular mechanism is still largely elusive. We established mice lacking the kinesin-4 motor KIF21B as a model for fear extinction defects. Postsynaptic NMDAR-dependent long-term depression (LTD) is specifically impaired in knockouts. NMDAR-mediated LTD-causing stimuli induce dynamic association of KIF21B with the Rac1GEF subunit engulfment and cell motility protein 1 (ELMO1), leading to ELMO1 translocation out of dendritic spines and its sequestration in endosomes. This process may essentially terminate transient activation of Rac1, shrink spines, facilitate AMPAR endocytosis, and reduce postsynaptic strength, thereby forming a mechanistic link to LTD expression. Antagonizing ELMO1/Dock Rac1GEF activity by the administration of 4-[3'-(2″-chlorophenyl)-2'-propen-1'-ylidene]-1-phenyl-3,5-pyrazolidinedione (CPYPP) significantly reverses the knockout phenotype. Therefore, we propose that KIF21B-mediated Rac1 inactivation is a key molecular event in NMDAR-dependent LTD expression underlying cognitive flexibility in fear extinction.
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Affiliation(s)
- Momo Morikawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yosuke Tanaka
- Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hyun-Soo Cho
- Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masaharu Yoshihara
- Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Nobutaka Hirokawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Center of Excellence in Genome Medicine Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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Nakamoto C, Konno K, Miyazaki T, Nakatsukasa E, Natsume R, Abe M, Kawamura M, Fukazawa Y, Shigemoto R, Yamasaki M, Sakimura K, Watanabe M. Expression mapping, quantification, and complex formation of GluD1 and GluD2 glutamate receptors in adult mouse brain. J Comp Neurol 2019; 528:1003-1027. [DOI: 10.1002/cne.24792] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 09/04/2019] [Accepted: 09/19/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Chihiro Nakamoto
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Kohtarou Konno
- Department of Anatomy, Faculty of Medicine Hokkaido University Sapporo Japan
| | - Taisuke Miyazaki
- Department of Anatomy, Faculty of Medicine Hokkaido University Sapporo Japan
- Department of Functioning and Disability, Faculty of Health Sciences Hokkaido University Sapporo Japan
| | - Ena Nakatsukasa
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Rie Natsume
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Manabu Abe
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Meiko Kawamura
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Yugo Fukazawa
- Division of Brain Structure and Function, Research Center for Child Mental Development, Life Science Advancement Program, Faculty of Medical Science University of Fukui Fukui Japan
| | - Ryuichi Shigemoto
- Institute of Science and Technology (IST Austria) Klosterneuburg Austria
| | - Miwako Yamasaki
- Department of Anatomy, Faculty of Medicine Hokkaido University Sapporo Japan
| | - Kenji Sakimura
- Department of Animal Model Development Brain Research Institute, Niigata University Niigata Japan
| | - Masahiko Watanabe
- Department of Anatomy, Faculty of Medicine Hokkaido University Sapporo Japan
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40
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Dong W, Radulovic T, Goral RO, Thomas C, Suarez Montesinos M, Guerrero-Given D, Hagiwara A, Putzke T, Hida Y, Abe M, Sakimura K, Kamasawa N, Ohtsuka T, Young SM. CAST/ELKS Proteins Control Voltage-Gated Ca 2+ Channel Density and Synaptic Release Probability at a Mammalian Central Synapse. Cell Rep 2019; 24:284-293.e6. [PMID: 29996090 PMCID: PMC6372087 DOI: 10.1016/j.celrep.2018.06.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/25/2018] [Accepted: 06/05/2018] [Indexed: 12/29/2022] Open
Abstract
In the presynaptic terminal, the magnitude and location of Ca2+ entry through voltage-gated Ca2+ channels (VGCCs) regulate the efficacy of neurotransmitter release. However, how presynaptic active zone proteins control mammalian VGCC levels and organization is unclear. To address this, we deleted the CAST/ELKS protein family at the calyx of Held, a CaV2.1 channel-exclusive presynaptic terminal. We found that loss of CAST/ELKS reduces the CaV2.1 current density with concomitant reductions in CaV2.1 channel numbers and clusters. Surprisingly, deletion of CAST/ELKS increases release probability while decreasing the readily releasable pool, with no change in active zone ultrastructure. In addition, Ca2+ channel coupling is unchanged, but spontaneous release rates are elevated. Thus, our data identify distinct roles for CAST/ELKS as positive regulators of CaV2.1 channel density and suggest that they regulate release probability through a post-priming step that controls synaptic vesicle fusogenicity. Dong et al. show that CAST/ELKS have multiple roles in presynaptic function. These proteins positively regulate CaV2.1 channel abundance and negatively regulate release probability. The authors propose that CAST/ELKS regulate release probability at a step in synaptic vesicle release that regulates the energy barrier for synaptic vesicle fusion.
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Affiliation(s)
- Wei Dong
- Research Group Molecular Mechanisms of Synaptic Function, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA; Key Laboratory of Medical Electrophysiology, Ministry of Education, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
| | - Tamara Radulovic
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA
| | - R Oliver Goral
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA
| | - Connon Thomas
- Max Planck Florida Institute for Neuroscience Electron Microscopy Facility, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA
| | - Monica Suarez Montesinos
- Research Group Molecular Mechanisms of Synaptic Function, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA
| | - Debbie Guerrero-Given
- Max Planck Florida Institute for Neuroscience Electron Microscopy Facility, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA
| | - Akari Hagiwara
- Department of Biochemistry, University of Yamanashi, Yamanashi 409-3898, Japan
| | - Travis Putzke
- Research Group Molecular Mechanisms of Synaptic Function, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA
| | - Yamato Hida
- Department of Biochemistry, University of Yamanashi, Yamanashi 409-3898, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Naomi Kamasawa
- Max Planck Florida Institute for Neuroscience Electron Microscopy Facility, Max Planck Florida Institute for Neuroscience, Jupiter, FL 33458, USA
| | - Toshihisa Ohtsuka
- Department of Biochemistry, University of Yamanashi, Yamanashi 409-3898, Japan.
| | - Samuel M Young
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA; Department of Otolaryngology, University of Iowa, Iowa City, IA 52242, USA; Iowa Neuroscience Institute, University of Iowa, Iowa City, IA 52242, USA; Aging Mind Brain Initiative, University of Iowa, Iowa City, IA 52242, USA.
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41
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Nishino K, Watanabe S, Shijie J, Murata Y, Oiwa K, Komine O, Endo F, Tsuiji H, Abe M, Sakimura K, Mishra A, Yamanaka K. Mice deficient in the C-terminal domain of TAR DNA-binding protein 43 develop age-dependent motor dysfunction associated with impaired Notch1-Akt signaling pathway. Acta Neuropathol Commun 2019; 7:118. [PMID: 31345270 PMCID: PMC6657153 DOI: 10.1186/s40478-019-0776-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 07/18/2019] [Indexed: 02/06/2023] Open
Abstract
Intracellular mislocalization of TAR DNA-binding protein 43 (TDP-43), a nuclear DNA/RNA-binding protein involved in RNA metabolism, is a pathological hallmark of amyotrophic lateral sclerosis (ALS). Although the aggregation-prone, TDP-43 C-terminal domain is widely considered as a key component of TDP-43 pathology in ALS, recent studies including ours suggest that TDP-43 N-terminal fragments (TDP-∆C) may also contribute to the motor dysfunction in ALS. However, the specific pathological functions of TDP-43 N-terminal fragments in mice have not been elucidated. Here, we established TDP-∆C knock-in mice missing a part of exon 6 of murine Tardbp gene, which encodes the C-terminal region of TDP-43. Homozygous TDP-∆C mice showed embryonic lethality, indicating that the N-terminal domain of TDP-43 alone is not sufficient for normal development. In contrast, heterozygous TDP-∆C mice developed normally but exhibited age-dependent mild motor dysfunction with a loss of C-boutons, large cholinergic synaptic terminals on spinal α-motor neurons. TDP-∆C protein broadly perturbed gene expression in the spinal cords of aged heterozygous TDP-∆C mice, including downregulation of Notch1 mRNA. Moreover, the level of Notch1 mRNA was suppressed both by TDP-43 depletion and TDP-∆C expression in Neuro2a cells. Decreased Notch1 mRNA expression in aged TDP-∆C mice was associated with the age-dependent motor dysfunction and loss of Akt surviving signal. Our findings indicate that the N-terminal region of TDP-43 derived from TDP-∆C induces the age-dependent motor dysfunction associated with impaired Notch1-Akt axis in mice.
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Affiliation(s)
- Kohei Nishino
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Seiji Watanabe
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Jin Shijie
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Yuri Murata
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Kotaro Oiwa
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Okiru Komine
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Fumito Endo
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
| | - Hitomi Tsuiji
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi 467-8603 Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan 342011 India
| | - Koji Yamanaka
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8601 Japan
- Department of Neuroscience and Pathobiology, Graduate School of Medicine, Nagoya University, Nagoya, Aichi 466-8550 Japan
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42
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Chiu CQ, Martenson JS, Yamazaki M, Natsume R, Sakimura K, Tomita S, Tavalin SJ, Higley MJ. Input-Specific NMDAR-Dependent Potentiation of Dendritic GABAergic Inhibition. Neuron 2019; 97:368-377.e3. [PMID: 29346754 DOI: 10.1016/j.neuron.2017.12.032] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 11/16/2017] [Accepted: 12/21/2017] [Indexed: 01/21/2023]
Abstract
Preservation of a balance between synaptic excitation and inhibition is critical for normal brain function. A number of homeostatic cellular mechanisms have been suggested to play a role in maintaining this balance, including long-term plasticity of GABAergic inhibitory synapses. Many previous studies have demonstrated a coupling of postsynaptic spiking with modification of perisomatic inhibition. Here, we demonstrate that activation of NMDA-type glutamate receptors leads to input-specific long-term potentiation of dendritic inhibition mediated by somatostatin-expressing interneurons. This form of plasticity is expressed postsynaptically and requires both CaMKIIα and the β2 subunit of the GABA-A receptor. Importantly, this process may function to preserve dendritic inhibition, as genetic deletion of NMDAR signaling results in a selective weakening of dendritic inhibition. Overall, our results reveal a new mechanism for linking excitatory and inhibitory input in neuronal dendrites and provide novel insight into the homeostatic regulation of synaptic transmission in cortical circuits.
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Affiliation(s)
- Chiayu Q Chiu
- Department of Neuroscience, Program in Cellular Neuroscience, Neurodegeneration, and Repair, Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT 06510, USA; Centro Interdisciplinario de Neurociencia de Valparaíso, Universidad de Valparaíso, Valparaíso 2360102, Chile
| | - James S Martenson
- Department of Neuroscience, Program in Cellular Neuroscience, Neurodegeneration, and Repair, Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Maya Yamazaki
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Rie Natsume
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Susumu Tomita
- Department of Neuroscience, Program in Cellular Neuroscience, Neurodegeneration, and Repair, Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Steven J Tavalin
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Michael J Higley
- Department of Neuroscience, Program in Cellular Neuroscience, Neurodegeneration, and Repair, Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT 06510, USA.
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43
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Inoue M, Takeuchi A, Manita S, Horigane SI, Sakamoto M, Kawakami R, Yamaguchi K, Otomo K, Yokoyama H, Kim R, Yokoyama T, Takemoto-Kimura S, Abe M, Okamura M, Kondo Y, Quirin S, Ramakrishnan C, Imamura T, Sakimura K, Nemoto T, Kano M, Fujii H, Deisseroth K, Kitamura K, Bito H. Rational Engineering of XCaMPs, a Multicolor GECI Suite for In Vivo Imaging of Complex Brain Circuit Dynamics. Cell 2019; 177:1346-1360.e24. [PMID: 31080068 DOI: 10.1016/j.cell.2019.04.007] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/28/2019] [Accepted: 04/02/2019] [Indexed: 12/15/2022]
Abstract
To decipher dynamic brain information processing, current genetically encoded calcium indicators (GECIs) are limited in single action potential (AP) detection speed, combinatorial spectral compatibility, and two-photon imaging depth. To address this, here, we rationally engineered a next-generation quadricolor GECI suite, XCaMPs. Single AP detection was achieved within 3-10 ms of spike onset, enabling measurements of fast-spike trains in parvalbumin (PV)-positive interneurons in the barrel cortex in vivo and recording three distinct (two inhibitory and one excitatory) ensembles during pre-motion activity in freely moving mice. In vivo paired recording of pre- and postsynaptic firing revealed spatiotemporal constraints of dendritic inhibition in layer 1 in vivo, between axons of somatostatin (SST)-positive interneurons and apical tufts dendrites of excitatory pyramidal neurons. Finally, non-invasive, subcortical imaging using red XCaMP-R uncovered somatosensation-evoked persistent activity in hippocampal CA1 neurons. Thus, the XCaMPs offer a critical enhancement of solution space in studies of complex neuronal circuit dynamics. VIDEO ABSTRACT.
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Affiliation(s)
- Masatoshi Inoue
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Bioengineering, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Atsuya Takeuchi
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Satoshi Manita
- Department of Neurophysiology, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan
| | - Shin-Ichiro Horigane
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Neuroscience I, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi 464-8601, Japan; Department of Molecular/Cellular Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Masayuki Sakamoto
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryosuke Kawakami
- Laboratory of Molecular and Cellular Biophysics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan; Department of Molecular Medicine for Pathogenesis, Ehime University Graduate School of Medicine, Toon, Ehime 791-0295, Japan
| | - Kazushi Yamaguchi
- Laboratory of Molecular and Cellular Biophysics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Kouhei Otomo
- Laboratory of Molecular and Cellular Biophysics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Hiroyuki Yokoyama
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi 980-8579, Japan
| | - Ryang Kim
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tatsushi Yokoyama
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Sayaka Takemoto-Kimura
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Neuroscience I, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi 464-8601, Japan; Department of Molecular/Cellular Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan; Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Saitama, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Niigata 951-8585, Japan
| | - Michiko Okamura
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yayoi Kondo
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Sean Quirin
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Charu Ramakrishnan
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis, Ehime University Graduate School of Medicine, Toon, Ehime 791-0295, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Niigata 951-8585, Japan
| | - Tomomi Nemoto
- Laboratory of Molecular and Cellular Biophysics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan; Core Research for Evolutional Science and Technology (CREST), Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Masanobu Kano
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; International Research Center for Neurointelligence, The University of Tokyo, Tokyo, Japan
| | - Hajime Fujii
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Karl Deisseroth
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Kazuo Kitamura
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Neurophysiology, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi 409-3898, Japan
| | - Haruhiko Bito
- Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; International Research Center for Neurointelligence, The University of Tokyo, Tokyo, Japan.
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44
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Cho WH, Park JC, Jeon WK, Cho J, Han JS. Superior Place Learning of C57BL/6 vs. DBA/2 Mice Following Prior Cued Learning in the Water Maze Depends on Prefrontal Cortical Subregions. Front Behav Neurosci 2019; 13:11. [PMID: 30760989 PMCID: PMC6361835 DOI: 10.3389/fnbeh.2019.00011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 01/15/2019] [Indexed: 01/02/2023] Open
Abstract
The participation of the prefrontal cortex (PFC), hippocampus, and dorsal striatum in switching the learning task from cued to place learning were examined in C57BL/6 and DBA/2 mice, by assessing changed levels of phosphorylated CREB (pCREB). Mice of both strains first received cued training in a water maze for 4 days (4 trials per day), and were then assigned to one of four groups, one with no place training, and three with different durations of place training (2, 4, or 8 days). Both strains showed equal performance in cued training. After the switch to place training, C57BL/6 mice with 2 or 4 days of training performed significantly better than DBA/2 mice, but their superiority disappeared during the second half of an 8 days-place training period. The pCREB levels of these mice were measured 30 min after place training and compared with those of mice that received only cued training. Changes in pCREB levels of C57BL/6 mice were greater in the hippocampal CA3, hippocampal dentate gyrus, orbitofrontal and medial PFC than those of DBA/2 mice, when mice of both received the switched place training for 2 days. We further investigated the roles of orbitofrontal and medial PFC among these brain regions showing strain differences, by destroying each region using selective neurotoxins. C57BL/6 mice with orbitofrontal lesions were slower to acquire the place learning and continued to use the cued search acquired during the cued training phase. These findings indicate that mouse orbitofrontal cortex (OFC) pCREB is associated with behavioral flexibility such as the ability to switch a learning task.
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Affiliation(s)
- Woo-Hyun Cho
- Department of Biological Sciences, Konkuk University, Seoul, South Korea
| | - Jung-Cheol Park
- Department of Biological Sciences, Konkuk University, Seoul, South Korea
| | - Won Kyung Jeon
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine (KIOM), Daejeon, South Korea.,Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology (KIST), Seoul, South Korea
| | - Jeiwon Cho
- Department of Medical Science, College of Medicine, Catholic Kwandong University International St. Mary's Hospital, Incheon, South Korea.,Institute for Bio-Medical Convergence, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, South Korea
| | - Jung-Soo Han
- Department of Biological Sciences, Konkuk University, Seoul, South Korea
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45
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Shimizu T, Osanai Y, Tanaka KF, Thai TQ, Abe M, Natsume R, Sakimura K, Ikenaka K. Mechanical regulation of oligodendrocyte morphology and maturation by the mechanosensor p130Cas. J Neurochem 2019; 150:158-172. [PMID: 30589943 DOI: 10.1111/jnc.14657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 01/04/2023]
Abstract
Oligodendrocytes (OLs) are myelinating cells of the central nervous system. Recent studies have shown that mechanical factors influence various cell properties. Mechanical stimulation can be transduced into intracellular biochemical signals through mechanosensors, such as integrin, p130Cas, talin and vinculin. However, the molecular mechanisms underlying the mechanical regulation of OLs by mechanosensors remain largely unknown. We found that morphology of OL was affected by knockdown of the mechanosensors p130Cas or talin1. Stretching of OL precursor cells induced the phosphorylation of p130Cas and talin-associated assembly of vinculin. Shear stress decreased the number of OL processes, whereas these effects were mechanically suppressed by dominant-negative (DN) p130Cas, but not by DN-talin1. To investigate the roles of p130Cas in post-natal OLs in vivo, we constructed a novel p130Cas knock-in mouse and found overexpression of p130Cas in vivo affected the number of mature OLs in the cortex. These results indicate that the mechanosensor p130Cas controls both OL morphogenesis and maturation.
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Affiliation(s)
- Takeshi Shimizu
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Aichi, Japan.,Department of Physiological Sciences, School of Life Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Japan
| | - Yasuyuki Osanai
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Aichi, Japan.,Department of Physiological Sciences, School of Life Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Japan
| | - Kenji F Tanaka
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo, Japan
| | - Truc Quynh Thai
- Departments of Anatomy and Molecular Histology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Rie Natsume
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kazuhiro Ikenaka
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Aichi, Japan.,Department of Physiological Sciences, School of Life Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Japan
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46
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Autophosphorylation of F-actin binding domain of CaMKIIβ is required for fear learning. Neurobiol Learn Mem 2018; 157:86-95. [PMID: 30528771 DOI: 10.1016/j.nlm.2018.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/15/2018] [Accepted: 12/07/2018] [Indexed: 11/21/2022]
Abstract
CaMKII is a pivotal kinase that plays essential roles in synaptic plasticity. Apart from its signaling function, the structural function of CaMKII is becoming clear. CaMKII - F-actin interaction stabilizes actin cytoskeleton in a dendritic spine. A transient autophosphorylation at the F-actin binding region during LTP releases CaMKII from F-actin and opens a brief time-window of actin reorganization. However, the physiological relevance of this finding in learning and memory was not presented. Using a knock-in (KI) mouse carrying phosphoblock mutations in the actin-binding domain of CaMKIIβ, we demonstrate that proper regulation of CaMKII - F-actin interaction is important for fear conditioning memory tasks. The KI mice show poor performance in contextual and cued versions of fear conditioning test. These results suggest the importance of CaMKII - F-actin interactions in learning and memory.
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47
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Durose WW, Shimizu T, Li J, Abe M, Sakimura K, Chetsawang B, Tanaka KF, Suzumura A, Tohyama K, Ikenaka K. Cathepsin C modulates myelin oligodendrocyte glycoprotein‐induced experimental autoimmune encephalomyelitis. J Neurochem 2018; 148:413-425. [DOI: 10.1111/jnc.14581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Wilaiwan Wisessmith Durose
- Division of Neurobiology and Bioinformatics National Institute for Physiological Sciences OkazakiJapan
- Department of Physiological Sciences The Graduate University of Advance Studies (SOKENDAI) Okazaki Japan
- Research Center for Neuroscience Institute of Molecular Biosciences Mahidol University Nakhonpathom Thailand
| | - Takahiro Shimizu
- Division of Neurobiology and Bioinformatics National Institute for Physiological Sciences OkazakiJapan
- Department of Physiological Sciences The Graduate University of Advance Studies (SOKENDAI) Okazaki Japan
| | - JiaYi Li
- Division of Neurobiology and Bioinformatics National Institute for Physiological Sciences OkazakiJapan
- Department of Physiological Sciences The Graduate University of Advance Studies (SOKENDAI) Okazaki Japan
| | - Manabu Abe
- Brain Research Institute Niigata University Niigata Japan
| | - Kenji Sakimura
- Brain Research Institute Niigata University Niigata Japan
| | - Banthit Chetsawang
- Research Center for Neuroscience Institute of Molecular Biosciences Mahidol University Nakhonpathom Thailand
| | - Kenji F. Tanaka
- Division of Neurobiology and Bioinformatics National Institute for Physiological Sciences OkazakiJapan
- Department of Neuropsychiatry Keio University Tokyo Japan
| | - Akio Suzumura
- Department of Neuroimmunology Research Institute of Environmental Medicine Nagoya University Nagoya Japan
| | - Koujiro Tohyama
- Department of Physiology School of Dentistry Iwate Medical University Morioka Japan
| | - Kazuhiro Ikenaka
- Division of Neurobiology and Bioinformatics National Institute for Physiological Sciences OkazakiJapan
- Department of Physiological Sciences The Graduate University of Advance Studies (SOKENDAI) Okazaki Japan
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48
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Fazilov G, Shenouda M, Iskhakov B, Buras A, Bhattacharjee D, Dohnalova P, Iskhakova J, Bourie F, Bodnar RJ. Acquisition and expression of sucrose conditioned flavor preferences following dopamine D1, opioid and NMDA receptor antagonism in C57BL/6 mice. Nutr Neurosci 2018; 23:672-678. [PMID: 30465483 DOI: 10.1080/1028415x.2018.1544333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The study of inbred mouse strains is a useful animal model to assess differences in ingestive behavior responses, including conditioned flavor preferences (CFP). C57BL/6, BALB/c and SWR inbred mice display differential sensitivity to dopamine (DA) D1, opioid and muscarinic cholinergic receptor antagonism of sucrose or saccharin intake as well as to muscarinic cholinergic antagonism of acquisition (learning) of sucrose-CFP. Given that DA D1, opioid and N-methyl-D-aspartate (NMDA) receptor antagonists differentially alter sucrose-CFP in BALB/c and SWR inbred mice, the present study examined whether systemic administration of naltrexone, SCH23390 or MK-801 altered acquisition and expression of sucrose-CFP in C57BL/6 mice. In acquisition experiments, male food-restricted C57BL/6 mice were treated with vehicle, naltrexone (1, 5 mg/kg), SCH23390 (50, 200 nmol/kg) or MK-801 (100, 200 µg/kg) 30 min prior to each of ten daily sessions in which they alternately consumed a flavored (CS+, e.g. cherry) 16% sucrose solution and a differently-flavored (CS-, e.g. grape) 0.05% saccharin solution followed by six two-bottle CS choice tests mixed in 0.2% saccharin without injections. SCH23390 and MK-801, but not naltrexone eliminated sucrose-CFP acquisition in food-restricted C57BL/6 mice. In expression experiments, food-restricted C57BL/6 mice underwent the ten training sessions without injections followed by two-bottle CS choice tests 30 min following vehicle, naltrexone (1, 5 mg/kg), SCH23390 (200, 800 nmol/kg) or MK-801 (100, 200 µg/kg). SCH23390 more effectively reduced the magnitude of sucrose-CFP expression than naltrexone or MK-801 in food-restricted C57BL/6 mice. Thus, dopamine D1 and NMDA receptor signaling is essential for learning of sucrose-CFP in C57BL/6 mice.
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Affiliation(s)
- Gabriela Fazilov
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Merna Shenouda
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Ben Iskhakov
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Agata Buras
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Debjeet Bhattacharjee
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Petra Dohnalova
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Julia Iskhakova
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Faye Bourie
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA
| | - Richard J Bodnar
- Department of Psychology, Queens College, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA.,CUNY Neuroscience Collaborative and Psychology Doctoral Program, CUNY Graduate Center, New York, NY, USA
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49
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Endogenous calcitonin regulates lipid and glucose metabolism in diet-induced obesity mice. Sci Rep 2018; 8:17001. [PMID: 30451912 PMCID: PMC6242993 DOI: 10.1038/s41598-018-35369-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 11/05/2018] [Indexed: 12/22/2022] Open
Abstract
Calcitonin (CT) plays an important role in calcium homeostasis, and its precursor, proCT, is positively associated with the body mass index in the general human population. However, the physiological role of endogenous CT in the regulation of metabolism remains unclear. Knockout mice with gene-targeted deletion of exon 4 of Calca (CT KO) were generated by targeted modification in embryonic stem cells. Male mice were used in all experiments and were fed a slightly higher fat diet than the standard diet. The CT KO mice did not exhibit any abnormal findings in appearance, but exhibited weight loss from 15 months old, i.e., significantly decreased liver, adipose tissue, and kidney weights, compared with wild-type control mice. Furthermore, CT KO mice exhibited significantly decreased fat contents in the liver, lipid droplets in adipose tissues, serum glucose, and lipid levels, and significantly increased insulin sensitivity and serum adiponectin levels. CT significantly promoted 3T3-L1 adipocyte differentiation and suppressed adiponectin release. These results suggested that CT gene deletion prevents obesity, hyperglycemia, and hyperlipidemia in aged male mice. This is the first definitive evidence that CT may contribute to glucose and lipid metabolism in aged male mice, possibly via decreased adiponectin secretion from adipocytes.
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Zhou L, Hossain MI, Yamazaki M, Abe M, Natsume R, Konno K, Kageyama S, Komatsu M, Watanabe M, Sakimura K, Takebayashi H. Deletion of exons encoding carboxypeptidase domain of Nna1 results in Purkinje cell degeneration (pcd
) phenotype. J Neurochem 2018; 147:557-572. [DOI: 10.1111/jnc.14591] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 08/31/2018] [Accepted: 09/03/2018] [Indexed: 02/02/2023]
Affiliation(s)
- Li Zhou
- Department of Cellular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - M. Ibrahim Hossain
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - Maya Yamazaki
- Department of Cellular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Manabu Abe
- Department of Cellular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Rie Natsume
- Department of Cellular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Kohtaro Konno
- Department of Anatomy; Faculty of Medicine; Hokkaido University; Sapporo Japan
| | - Shun Kageyama
- Department of Biochemistry; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - Masaaki Komatsu
- Department of Biochemistry; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - Masahiko Watanabe
- Department of Anatomy; Faculty of Medicine; Hokkaido University; Sapporo Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
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