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Zhao Z, Parra OP, Musella F, Scrutton-Alvarado N, Fujita SI, Alber F, Yang Y, Yamada T. Mega-Enhancer Bodies Organize Neuronal Long Genes in the Cerebellum. bioRxiv 2023:2023.07.19.549737. [PMID: 37503219 PMCID: PMC10370079 DOI: 10.1101/2023.07.19.549737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Dynamic regulation of gene expression plays a key role in establishing the diverse neuronal cell types in the brain. Recent findings in genome biology suggest that three-dimensional (3D) genome organization has important, but mechanistically poorly understood functions in gene transcription. Beyond local genomic interactions between promoters and enhancers, we find that cerebellar granule neurons undergoing differentiation in vivo exhibit striking increases in long-distance genomic interactions between transcriptionally active genomic loci, which are separated by tens of megabases within a chromosome or located on different chromosomes. Among these interactions, we identify a nuclear subcompartment enriched for near-megabase long enhancers and their associated neuronal long genes encoding synaptic or signaling proteins. Neuronal long genes are differentially recruited to this enhancer-dense subcompartment to help shape the transcriptional identities of granule neuron subtypes in the cerebellum. SPRITE analyses of higher-order genomic interactions, together with IGM-based 3D genome modeling and imaging approaches, reveal that the enhancer-dense subcompartment forms prominent nuclear structures, which we term mega-enhancer bodies. These novel nuclear bodies reside in the nuclear periphery, away from other transcriptionally active structures, including nuclear speckles located in the nuclear interior. Together, our findings define additional layers of higher-order 3D genome organization closely linked to neuronal maturation and identity in the brain.
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Komiyama T, Kuroshima T, Sugasawa T, Fujita SI, Ikami Y, Hirai H, Tsushima F, Michi Y, Kayamori K, Higashino F, Harada H. High expression of Sam68 contributes to metastasis by regulating vimentin expression and a motile phenotype in oral squamous cell carcinoma. Oncol Rep 2022; 48:183. [PMID: 36082807 PMCID: PMC9478953 DOI: 10.3892/or.2022.8398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 07/25/2022] [Indexed: 12/24/2022] Open
Abstract
The present study aimed to investigate the clinical and biological significance of Src-associated in mitosis 68 kDa (Sam68) in oral squamous cell carcinoma (OSCC). Immunohistochemical analysis was performed on tissue samples obtained from 77 patients with OSCC. Univariate analysis revealed that the high expression of Sam68 was significantly correlated with advanced pathological T stage (P=0.01), positive lymphovascular invasion (P=0.01), and pathological cervical lymph node metastasis (P<0.01). Moreover, multivariate analysis demonstrated that the high expression of Sam68 was an independent predictive factor for cervical lymph node metastasis (odds ratio, 4.39; 95% confidence interval, 1.49-14.23; P<0.01). These results indicated that high Sam68 expression contributed to tumor progression, especially cervical lymph node metastasis, in OSCC. mRNA sequencing was also performed to assess the changes in the transcriptome between OSCC cells with Sam68 knockdown and control cells with the aim of elucidating the biological roles of Sam68. Gene Ontology enrichment analysis revealed that downregulated differentially expressed genes (DEGs) were concentrated in some biological processes related to epithelial-mesenchymal transition. Among these DEGs, it was established that vimentin was particularly downregulated in these cells. It was also confirmed that Sam68 knockdown reduced the motility of OSCC cells. Furthermore, the immunohistochemical study of vimentin identified the association between vimentin expression and Sam68 expression as well as cervical lymph node metastasis. In conclusion, the present study suggested that the high expression of Sam68 may contribute to metastasis by regulating vimentin expression and a motile mesenchymal phenotype in OSCC.
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Affiliation(s)
- Takuya Komiyama
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Takeshi Kuroshima
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Takehito Sugasawa
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305‑8577, Japan
| | - Shin-Ichiro Fujita
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305‑8577, Japan
| | - Yuta Ikami
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Hideaki Hirai
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Fumihiko Tsushima
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Yasuyuki Michi
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Kou Kayamori
- Department of Oral Pathology, Division of Oral Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
| | - Fumihiro Higashino
- Department of Molecular Oncology, Faculty of Dental Medicine and Graduate School of Biomedical Science and Engineering, Hokkaido University, Sapporo, Hokkaido 060‑8586, Japan
| | - Hiroyuki Harada
- Department of Oral and Maxillofacial Surgical Oncology, Division of Health Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo‑ku, Tokyo 113‑8549, Japan
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Tamai S, Fujita SI, Komine R, Kanki Y, Aoki K, Watanabe K, Takekoshi K, Sugasawa T. Acute cold stress induces transient MuRF1 upregulation in the skeletal muscle of zebrafish. Biochem Biophys Res Commun 2022; 608:59-65. [PMID: 35390673 DOI: 10.1016/j.bbrc.2022.03.093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 03/18/2022] [Indexed: 12/26/2022]
Abstract
Cryotherapy is one of the most common treatments for trauma or fatigue in the field of sports medicine. However, the molecular biological effects of acute cold exposure on skeletal muscle remain unclear. Therefore, we used zebrafish, which have recently been utilized as an animal model for skeletal muscle, to comprehensively investigate and selectively clarify the time-course changes induced by cryotherapy. Zebrafish were exposed intermittently to cold stimulation three times for 15 min each. Thereafter, skeletal muscle samples were collected after 15 min and 1, 2, 4, and 6 h. mRNA sequencing revealed the involvement of trim63a, fbxo32, fbxo30a, and klhl38b in "protein ubiquitination" from the top 10 most upregulated genes. Subsequently, we examined the time-course changes of the four genes by quantitative PCR, and their expression peaked 2 h after cryotherapy and returned to baseline after 6 h. Moreover, the proteins encoded by trim63a and fbxo32 (muscle-specific RING finger protein 1 [MuRF1] and muscle atrophy F-box, respectively), which are known to be major genes encoding E3 ubiquitin ligases, were examined by western blotting, and MuRF1 expression displayed similar temporal changes as trim63a expression. These findings suggest that acute cold exposure transiently upregulates E3 ubiquitin ligases, especially MuRF1; thus, cryotherapy may contribute to the treatment of trauma or fatigue by promoting protein processing.
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Affiliation(s)
- Shinsuke Tamai
- Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Shin-Ichiro Fujita
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Ritsuko Komine
- Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Yasuharu Kanki
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Kai Aoki
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan; Japan Society for the Promotion of Science, Chiyoda-ku, Japan
| | - Koichi Watanabe
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan
| | - Kazuhiro Takekoshi
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takehito Sugasawa
- Laboratory of Clinical Examination/Sports Medicine, Department of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan; Department of Sports Medicine Analysis, Open Facility Network Office, Research Facility Center for Science and Technology, University of Tsukuba, Japan.
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Hayashi T, Kudo T, Fujita R, Fujita SI, Tsubouchi H, Fuseya S, Suzuki R, Hamada M, Okada R, Muratani M, Shiba D, Suzuki T, Warabi E, Yamamoto M, Takahashi S. Nuclear factor E2-related factor 2 (NRF2) deficiency accelerates fast fibre type transition in soleus muscle during space flight. Commun Biol 2021; 4:787. [PMID: 34168270 PMCID: PMC8225765 DOI: 10.1038/s42003-021-02334-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 05/20/2021] [Indexed: 12/20/2022] Open
Abstract
Microgravity induces skeletal muscle atrophy, particularly in the soleus muscle, which is predominantly composed of slow-twitch myofibre (type I) and is sensitive to disuse. Muscle atrophy is commonly known to be associated with increased production of reactive oxygen species. However, the role of NRF2, a master regulator of antioxidative response, in skeletal muscle plasticity during microgravity-induced atrophy, is not known. To investigate the role of NRF2 in skeletal muscle within a microgravity environment, wild-type and Nrf2-knockout (KO) mice were housed in the International Space Station for 31 days. Gene expression and histological analyses demonstrated that, under microgravity conditions, the transition of type I (oxidative) muscle fibres to type IIa (glycolytic) was accelerated in Nrf2-KO mice without affecting skeletal muscle mass. Therefore, our results suggest that NRF2 affects myofibre type transition during space flight.
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Affiliation(s)
- Takuto Hayashi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.,Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
| | - Takashi Kudo
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
| | - Ryo Fujita
- Divsion of Regenerative Medicine, Transborder Medical Research Center, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Shin-Ichiro Fujita
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan.,Department of Genome Biology, Transborder Medical Research Center, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Hirona Tsubouchi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Sayaka Fuseya
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.,Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
| | - Riku Suzuki
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.,Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Ibaraki, Japan
| | - Michito Hamada
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Risa Okada
- JEM Utilization Center, Human Spaceflight Technology Directorate, JAXA, Ibaraki, Japan
| | - Masafumi Muratani
- Department of Genome Biology, Transborder Medical Research Center, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Dai Shiba
- JEM Utilization Center, Human Spaceflight Technology Directorate, JAXA, Ibaraki, Japan
| | - Takafumi Suzuki
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eiji Warabi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
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5
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Okada R, Fujita SI, Suzuki R, Hayashi T, Tsubouchi H, Kato C, Sadaki S, Kanai M, Fuseya S, Inoue Y, Jeon H, Hamada M, Kuno A, Ishii A, Tamaoka A, Tanihata J, Ito N, Shiba D, Shirakawa M, Muratani M, Kudo T, Takahashi S. Transcriptome analysis of gravitational effects on mouse skeletal muscles under microgravity and artificial 1 g onboard environment. Sci Rep 2021; 11:9168. [PMID: 33911096 PMCID: PMC8080648 DOI: 10.1038/s41598-021-88392-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/16/2021] [Indexed: 12/12/2022] Open
Abstract
Spaceflight causes a decrease in skeletal muscle mass and strength. We set two murine experimental groups in orbit for 35 days aboard the International Space Station, under artificial earth-gravity (artificial 1 g; AG) and microgravity (μg; MG), to investigate whether artificial 1 g exposure prevents muscle atrophy at the molecular level. Our main findings indicated that AG onboard environment prevented changes under microgravity in soleus muscle not only in muscle mass and fiber type composition but also in the alteration of gene expression profiles. In particular, transcriptome analysis suggested that AG condition could prevent the alterations of some atrophy-related genes. We further screened novel candidate genes to reveal the muscle atrophy mechanism from these gene expression profiles. We suggest the potential role of Cacng1 in the atrophy of myotubes using in vitro and in vivo gene transductions. This critical project may accelerate the elucidation of muscle atrophy mechanisms.
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Affiliation(s)
- Risa Okada
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan
- JEM Utilization Center, Human Spaceflight Technology Directorate, JAXA, Ibaraki, 305-8505, Japan
| | - Shin-Ichiro Fujita
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Riku Suzuki
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
- Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Takuto Hayashi
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Hirona Tsubouchi
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Chihiro Kato
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
- Master's Program in Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Shunya Sadaki
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Maho Kanai
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
- Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Sayaka Fuseya
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Yuri Inoue
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Hyojung Jeon
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Michito Hamada
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Akihiro Kuno
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
- Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Akiko Ishii
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Akira Tamaoka
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Jun Tanihata
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Naoki Ito
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe (FBRI), Kobe, 650-0047, Japan
| | - Dai Shiba
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan
- JEM Utilization Center, Human Spaceflight Technology Directorate, JAXA, Ibaraki, 305-8505, Japan
| | - Masaki Shirakawa
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan
- JEM Utilization Center, Human Spaceflight Technology Directorate, JAXA, Ibaraki, 305-8505, Japan
| | - Masafumi Muratani
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Takashi Kudo
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan.
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan.
| | - Satoru Takahashi
- Mouse Epigenetics Project, ISS/Kibo Experiment, Japan Aerospace Exploration Agency (JAXA), Ibaraki, 305-8505, Japan.
- Laboratory Animal Resource Center in Transborder Medical Research Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan.
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Fujita SI, Rutter L, Ong Q, Muratani M. Integrated RNA-seq Analysis Indicates Asynchrony in Clock Genes between Tissues under Spaceflight. Life (Basel) 2020; 10:E196. [PMID: 32933026 PMCID: PMC7555136 DOI: 10.3390/life10090196] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/20/2022] Open
Abstract
Rodent models have been widely used as analogs for estimating spaceflight-relevant molecular mechanisms in human tissues. NASA GeneLab provides access to numerous spaceflight omics datasets that can potentially generate novel insights and hypotheses about fundamental space biology when analyzed in new and integrated fashions. Here, we performed a pilot study to elucidate space biological mechanisms across tissues by reanalyzing mouse RNA-sequencing spaceflight data archived on NASA GeneLab. Our results showed that clock gene expressions in spaceflight mice were altered compared with those in ground control mice. Furthermore, the results suggested that spaceflight promotes asynchrony of clock gene expressions between peripheral tissues. Abnormal circadian rhythms are associated not only with jet lag and sleep disorders but also with cancer, lifestyle-related diseases, and mental disorders. Overall, our findings highlight the importance of elucidating the causes of circadian rhythm disruptions using the unique approach of space biology research to one day potentially develop countermeasures that benefit humans on Earth and in space.
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Affiliation(s)
- Shin-Ichiro Fujita
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki 305-8575, Japan
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-8575, Japan
| | - Lindsay Rutter
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-8575, Japan
| | - Quang Ong
- Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki 305-8575, Japan
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-8575, Japan
| | - Masafumi Muratani
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Ibaraki 305-8575, Japan
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Pisduangdaw S, Mekasuwandumrong O, Fujita SI, Arai M, Yoshida H, Panpranot J. One step synthesis of Pt–Co/TiO2 catalysts by flame spray pyrolysis for the hydrogenation of 3-nitrostyrene. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.11.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Yoshida H, Tomizawa A, Tachikawa H, Fujita SI, Arai M. Molecular interactions with CO2 for controlling the regioselectivity of liquid phase hydrogenation of 2,4-dinitroaniline. Phys Chem Chem Phys 2014; 16:18955-65. [PMID: 25092019 DOI: 10.1039/c4cp02114b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic hydrogenation of 2,4-dinitroaniline using a 0.5 wt% Pt/TiO2 catalyst was investigated in a multiphase medium of tetrahydrofuran (THF) pressurized by CO2 at different pressures and at 323 K. When CO2 pressure was increased, the overall rate of hydrogenation simply decreased but the selectivity to the desired product of 4-nitro-1,2-phenylenediamine increased. The noticeable enhancement of the selectivity to 4-nitro-1,2-phenylenediamine can be explained by chemical reactivities of CO2 molecules. In situ high-pressure FTIR and molecular simulations demonstrate that the dissolved CO2 molecules may interact with amino groups of the substrate and weaken the intra-hydrogen bonding between the amino and 2-nitro groups, which results in the change in the relative reactivity of the two nitro groups, yielding the desired product in a higher selectivity. The change in the intra- and inter-molecular interactions between the substrate and CO2 molecules was theoretically examined by DFT calculations.
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Affiliation(s)
- Hiroshi Yoshida
- Division of Chemical Process Engineering, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
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Bhatte KD, Fujita SI, Arai M, Pandit AB, Bhanage BM. Ultrasound assisted additive free synthesis of nanocrystalline zinc oxide. Ultrason Sonochem 2011; 18:54-58. [PMID: 20634118 DOI: 10.1016/j.ultsonch.2010.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Revised: 06/07/2010] [Accepted: 06/11/2010] [Indexed: 05/29/2023]
Abstract
A novel method for the synthesis of nanocrystalline zinc oxide without any additive was developed using zinc acetate and 1,4-butanediol through sonication. The structure and morphology of prepared nanocrystalline zinc oxide was investigated by various techniques like TEM, XRD, EDAX, UV-Vis spectroscopy. The solvent 1,4-butanediol played a dual role of fuel as well as capping agent eliminating addition of any extraneous species. The results showed that using ultrasound sonication is green, cost effective compared to conventional wet chemical method for ZnO nanoparticle synthesis.
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Affiliation(s)
- Kushal D Bhatte
- Department of Chemistry, Institute of Chemical Technology (Autonomous), N. M. Parekh Marg, Matunga, Mumbai 400 019, India
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Srivastava R, Fujita SI, Okamura S, Arai M. Alkylation of aromatic compounds with multi-component Lewis acid catalysts of ZnCl2 and ionic liquids with different organic cations. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11144-009-5422-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Weerachawanasak P, Mekasuwandumrong O, Arai M, Fujita SI, Praserthdam P, Panpranot J. Effect of strong metal–support interaction on the catalytic performance of Pd/TiO2 in the liquid-phase semihydrogenation of phenylacetylene. J Catal 2009. [DOI: 10.1016/j.jcat.2008.12.011] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fujita SI, Akihara S, Fujisawa S, Arai M. Hydroformylation of 1-hexene using polymer-supported rhodium catalysts in supercritical carbon dioxide. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2006.12.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Fujita SI, Sano Y, Bhanage BM, Arai M. Kinetic Analysis of Hydrogenation of Cinnamaldehyde with a Ruthenium Complex Catalyst in Several Solvents. J Chem Eng Japan / JCEJ 2003. [DOI: 10.1252/jcej.36.155] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shin-Ichiro Fujita
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Yoko Sano
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Bhalchandra M. Bhanage
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Masahiko Arai
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
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Golman B, Ohashi Z, Shinohara K, Fujita SI, Shimokawabe M, Arai M. NO Adsorption Characteristics of Agglomerated Zeolite Particles. J Chem Eng Japan / JCEJ 2002. [DOI: 10.1252/jcej.35.590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Boris Golman
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Zengo Ohashi
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Kunio Shinohara
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Shin-Ichiro Fujita
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Masahide Shimokawabe
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
| | - Masahiko Arai
- Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University
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Fujita SI, Senda Y, Nakaguchi S, Hashimoto T. Multiplex PCR using internal transcribed spacer 1 and 2 regions for rapid detection and identification of yeast strains. J Clin Microbiol 2001; 39:3617-22. [PMID: 11574582 PMCID: PMC88398 DOI: 10.1128/jcm.39.10.3617-3622.2001] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Multiplex PCR amplification followed by either agarose gel electrophoresis (PCR-AGE) or microchip electrophoresis (PCR-ME) was used to test a total of 120 fungal strains. The internal transcribed spacer 1 (ITS1) and ITS2 regions and the 5.8S ribosomal DNA (rDNA) region of the fungi were amplified by using universal primers ITS1 and ITS4. The ITS2 region was simultaneously amplified by using universal primers ITS3 and ITS4. Since Trichosporon asahi and T. asteroides showed similar lengths for two amplicons, 29 different gel patterns were demonstrated for 30 yeast species tested on the basis of differences in the lengths of one or two amplicons. Of 75 yeast isolates from clinical materials, 5 isolates (6.8%) which were incompletely identified or not identified by the phenotypic method were identified with our PCR-based method (2 isolates as Candida guilliermondii, 2 as C. krusei, and 1 as C. zeylanoides). No differences in discriminating power or sensitivity were observed between the PCR-AGE method and the PCR-ME method. These methods, prospectively applied to 24 yeast-positive blood culture bottles (16 patients), resulted in the correct detection of 24 yeast strains. In conclusion, multiplex PCR followed by electrophoresis seems to be a promising tool for the rapid identification of common and uncommon yeast strains from culture colonies and from yeast-positive blood culture bottles (5.5 h for the PCR-AGE method and 3 h for the PCR-ME method).
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Affiliation(s)
- S I Fujita
- Department of Laboratory Medicine, Graduate School of Medical Science, School of Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Japan.
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Fujita SI, Ishmatsu Y, Fujita Y. [Miscellaneous contribution to the essential oils of the plants from various territories. XLII. On the components of the essential oils of Magnolia denudata Desr. (author's transl)]. YAKUGAKU ZASSHI 1977; 97:1216-8. [PMID: 616822 DOI: 10.1248/yakushi1947.97.11_1216] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Fujita SI, Taka K, Fujita Y. [Miscellaneous contributions to the essential oils of the plants from various territories. XLI. On the components of the essential oil of Stevia rebaudiana Bertoni (author's transl)]. YAKUGAKU ZASSHI 1977; 97:692-4. [PMID: 925863 DOI: 10.1248/yakushi1947.97.6_692] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Fujita SI, Fujita Y. [Miscellaneous contributions to the essential oils of the plants from various territories. XXX. On the components of the essential oils of Cymbopogon goeringii A. Camus]. YAKUGAKU ZASSHI 1972; 92:1285-8. [PMID: 4674731 DOI: 10.1248/yakushi1947.92.10_1285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Fujita SI, Fujita Y. [Miscellaneous contributions to the essential oils of the plants from various territories. XXVI. Essential oil of Agastache formosanum Hay. 3]. YAKUGAKU ZASSHI 1970; 90:1514-6. [PMID: 5531674 DOI: 10.1248/yakushi1947.90.12_1514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Fujita SI, Suemitsu R, Fujita Y. [Miscellaneous contributions to the essential oils of the plants from various territories. XXV. On the components of the essential oils of Acorus gramineus Soland]. YAKUGAKU ZASSHI 1970; 90:1367-71. [PMID: 5530445 DOI: 10.1248/yakushi1947.90.11_1367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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