1
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Maeda K, Goto S, Miura K, Saito K, Morita E. The incorporation of extracellular vesicle markers varies among vesicles with distinct surface charges. J Biochem 2024; 175:299-312. [PMID: 38030385 DOI: 10.1093/jb/mvad097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/11/2023] [Indexed: 12/01/2023] Open
Abstract
Extracellular vesicles (EVs) are important mediators of intercellular communication. However, the methods available for distinguishing the heterogeneity of secreted EVs and isolating and purifying them are limited. This study introduced a HiBiT-tag to detect various EV markers, including CD63, CD9, Epidermal Growth Factor Receptor (EGFR), Flotilin1, and Syndecan-1, and investigated whether these marker-containing vesicles were capable of binding to differently charged column carriers. Four column carriers, Diethylaminoethyl (DEAE), Capto Adhere, Blue and Heparin, showed affinity for CD63 containing EVs, but their elution patterns varied. Furthermore, we observed that the elution patterns of the EV markers differed among vesicles with distinct surface charges when a DEAE column was used. This suggests that the incorporation of EV markers varied between these vesicles. The markers showed different subcellular localizations, indicating that the site of vesicle formation may contribute to the production of vesicles with varying charges and marker incorporation. These findings may have implications for the development of methods to purify homogeneous EVs, which could be useful in EV-mediated drug delivery systems.
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Grants
- 20333747, 19fk0108168h0001, 20he0622012h0001, 22fk0108527s0101 AMED
- 23790503, 26460555, 16H01188, 17H06413, 20 K21874, 22 K18378, 22H02873, 22H00553 JSPS KAKENHI
- Japan, and the Takeda Medical Research Foundation
- JPMJCR17H4 JST CREST
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Affiliation(s)
- Koki Maeda
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
- Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
| | - Simon Goto
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
| | - Koya Miura
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
| | - Koki Saito
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
- Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
- Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, 3 Bunkyo-cho, Hirosakishi, Aomori 036-8561, Japan
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2
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Konno Y, Uriu K, Chikata T, Takada T, Kurita JI, Ueda MT, Islam S, Yang Tan BJ, Ito J, Aso H, Kumata R, Williamson C, Iwami S, Takiguchi M, Nishimura Y, Morita E, Satou Y, Nakagawa S, Koyanagi Y, Sato K. Two-step evolution of HIV-1 budding system leading to pandemic in the human population. Cell Rep 2024; 43:113697. [PMID: 38294901 DOI: 10.1016/j.celrep.2024.113697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 11/19/2023] [Accepted: 01/05/2024] [Indexed: 02/02/2024] Open
Abstract
The pandemic HIV-1, HIV-1 group M, emerged from a single spillover event of its ancestral lentivirus from a chimpanzee. During human-to-human spread worldwide, HIV-1 diversified into multiple subtypes. Here, our interdisciplinary investigation mainly sheds light on the evolutionary scenario of the viral budding system of HIV-1 subtype C (HIV-1C), a most successfully spread subtype. Of the two amino acid motifs for HIV-1 budding, the P(T/S)AP and YPxL motifs, HIV-1C loses the YPxL motif. Our data imply that HIV-1C might lose this motif to evade immune pressure. Additionally, the P(T/S)AP motif is duplicated dependently of the level of HIV-1 spread in the human population, and >20% of HIV-1C harbored the duplicated P(T/S)AP motif. We further show that the duplication of the P(T/S)AP motif is caused by the expansion of the CTG triplet repeat. Altogether, our results suggest that HIV-1 has experienced a two-step evolution of the viral budding process during human-to-human spread worldwide.
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Affiliation(s)
- Yoriyuki Konno
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Keiya Uriu
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Graduate School of Medicine, the University of Tokyo, Tokyo 1130033, Japan; Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori 0368561, Japan
| | - Takayuki Chikata
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 8608556, Japan
| | - Toru Takada
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 8128581, Japan
| | - Jun-Ichi Kurita
- Graduate School of Medical Life Science, Yokohama City University, Kanagawa 2300045, Japan
| | - Mahoko Takahashi Ueda
- Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa 2591193, Japan
| | - Saiful Islam
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 8608556, Japan
| | - Benjy Jek Yang Tan
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 8608556, Japan
| | - Jumpei Ito
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Hirofumi Aso
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 6068507, Japan; Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 6068501, Japan
| | - Ryuichi Kumata
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Carolyn Williamson
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Shingo Iwami
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 8128581, Japan; MIRAI, Japan Science and Technology Agency, Kawaguchi 3320012, Japan
| | - Masafumi Takiguchi
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 8608556, Japan
| | - Yoshifumi Nishimura
- Graduate School of Medical Life Science, Yokohama City University, Kanagawa 2300045, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori 0368561, Japan
| | - Yorifumi Satou
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 8608556, Japan
| | - So Nakagawa
- Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa 2591193, Japan
| | - Yoshio Koyanagi
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 6068507, Japan; Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 6068501, Japan
| | - Kei Sato
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Graduate School of Medicine, the University of Tokyo, Tokyo 1130033, Japan; International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 2778561, Japan; CREST, Japan Science and Technology Agency, Kawaguchi 3320012, Japan.
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3
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Izumida K, Hara Y, Furukawa Y, Ishida K, Tabata K, Morita E. Purification of hepatitis C virus core protein in non-denaturing condition. J Virol Methods 2024; 323:114852. [PMID: 37979698 DOI: 10.1016/j.jviromet.2023.114852] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023]
Abstract
Hepatitis C virus (HCV) is the major cause of chronic hepatitis and hepatocellular carcinoma. Among its structural proteins, the HCV core protein has been implicated in liver disease. Understanding the role of HCV core proteins in viral diseases is crucial to elucidating disease mechanisms and identifying potential drug targets. However, purification challenges hinder the comprehensive elucidation of the structure and biochemical properties of HCV core proteins. In this study, we successfully solubilized bacterially expressed core protein using a high-salt and detergent-containing buffer and bypassed the denaturing-refolding process. Size-exclusion chromatography revealed three distinct peaks in the HCV-infected cell lysate, with the bacterially expressed soluble core protein corresponding to its second peak. Using a combination of affinity, size exclusion, and multi-modal chromatography purification techniques, we achieved a purity of > 95% for the core protein. Analytical ultracentrifugation revealed monomer formation in the solution. Far UV Circular dichroism spectroscopy identified 25.53% alpha helices and 20.26% beta sheets. These findings strongly suggest that the purified core proteins retained one of the native structures observed in HCV-infected cells.
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Affiliation(s)
- Kyo Izumida
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Yumiko Hara
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan
| | - Yukio Furukawa
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadoaka, Suita, Osaka 565-0871, Japan
| | - Kotaro Ishida
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan
| | - Keisuke Tabata
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan; Department of Genetics, Graduate School of Medicine Osaka University, Osaka 565-0871, Japan
| | - Eiji Morita
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan.
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4
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Miura K, Suzuki Y, Ishida K, Arakawa M, Wu H, Fujioka Y, Emi A, Maeda K, Hamajima R, Nakano T, Tenno T, Hiroaki H, Morita E. Distinct motifs in the E protein are required for SARS-CoV-2 virus particle formation and lysosomal deacidification in host cells. J Virol 2023; 97:e0042623. [PMID: 37830820 PMCID: PMC10617393 DOI: 10.1128/jvi.00426-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/18/2023] [Indexed: 10/14/2023] Open
Abstract
IMPORTANCE Severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2), the virus responsible for coronavirus disease 2019 (COVID-19), has caused a global public health crisis. The E protein, a structural protein found in this virus particle, is also known to be a viroporin. As such, it forms oligomeric ion channels or pores in the host cell membrane. However, the relationship between these two functions is poorly understood. In this study, we showed that the roles of E protein in virus particle and viroporin formation are distinct. This study contributes to the development of drugs that inhibit SARS-CoV-2 virus particle formation. Additionally, we designed a highly sensitive and high-throughput virus-like particle detection system using the HiBiT tag, which is a useful tool for studying the release of SARS-CoV-2.
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Affiliation(s)
- Koya Miura
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Youichi Suzuki
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Kotaro Ishida
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Hong Wu
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Yoshihiko Fujioka
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Akino Emi
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Koki Maeda
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Ryusei Hamajima
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
| | - Takashi Nakano
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Takeshi Tenno
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
- BeCellBar LLC, Nagoya, Aichi, Japan
| | - Hidekazu Hiroaki
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
- BeCellBar LLC, Nagoya, Aichi, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
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5
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Ishida K, Yagi H, Kato Y, Morita E. N-linked glycosylation of flavivirus E protein contributes to viral particle formation. PLoS Pathog 2023; 19:e1011681. [PMID: 37819933 PMCID: PMC10593244 DOI: 10.1371/journal.ppat.1011681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/23/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023] Open
Abstract
In the case of the Japanese encephalitis virus (JEV), the envelope protein (E), a major component of viral particles, contains a highly conserved N-linked glycosylation site (E: N154). Glycosylation of the E protein is thought to play an important role in the ability of the virus to attach to target cells during transmission; however, its role in viral particle formation and release remains poorly understood. In this study, we investigated the role of N-glycosylation of flaviviral structural proteins in viral particle formation and secretion by introducing mutations in viral structural proteins or cellular factors involved in glycoprotein transport and processing. The number of secreted subviral particles (SVPs) was significantly reduced in N154A, a glycosylation-null mutant, but increased in D67N, a mutant containing additional glycosylation sites, indicating that the amount of E glycosylation regulates the release of SVPs. SVP secretion was reduced in cells deficient in galactose, sialic acid, and N-acetylglucosamine modifications in the Golgi apparatus; however, these reductions were not significant, suggesting that glycosylation mainly plays a role in pre-Golgi transport. Fluorescent labeling of SVPs using a split green fluorescent protein (GFP) system and time-lapse imaging by retention using selective hooks (RUSH) system revealed that the glycosylation-deficient mutant was arrested before endoplasmic reticulum (ER)- Golgi transport. However, the absence of ERGIC-53 and ERGIC-L, ER-Golgi transport cargo receptors that recognize sugar chains on cargo proteins, does not impair SVP secretion. In contrast, the solubility of the N154A mutant of E or the N15A/T17A mutant of prM in cells was markedly lower than that of the wild type, and proteasome-mediated rapid degradation of these mutants was observed, indicating the significance of glycosylation of both prM and E in proper protein folding and assembly of viral particles in the ER.
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Affiliation(s)
- Kotaro Ishida
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan
- Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan
| | - Hirokazu Yagi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan
| | - Yukinari Kato
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan
- Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan
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6
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Hashimoto K, Kimura K, Ishida K, Morita E, Tanaka K, Hashimoto M. HIV-1 Integrase Inhibitor, Dihydroobionin B, and the Investigation of Its Extraordinary Specific Rotation. J Nat Prod 2023; 86:2139-2144. [PMID: 37595279 DOI: 10.1021/acs.jnatprod.3c00353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Dihydroobionin B (1), a chiral congener of known obionin B, was isolated from Pseudocoleophoma sp. KT4119, a freshwater fungus collected from a submerged wood block in Kochi Prefecture, Japan, in 2020. The planar structure of 1 was characterized by mass and NMR spectral analysis and confirmed by density functional theory (DFT)-based chemical shift calculations. Its absolute structure was determined by electronic circular dichroism spectral analysis. Notably, 1 exhibited an extraordinarily large specific rotation [[α]20D +1080 (c 0.056, CHCl3)], which was verified by DFT-based specific rotation calculations. However, these calculations indicated that the sign of the specific rotation based on static analysis was insufficient to determine the absolute configuration in this case. Furthermore, Pseudocoleophoma KT4119 produced coleophomapyrones A (2) and B (3) and coleophomaldehyde A (4). While this is the first report of 2 isolated from a natural source, it has also been prepared previously using a synthetic approach. Compound 1 potently inhibited HIV type 1 integrase (IC50 = 0.44 μM) without significant cytotoxicity. Finally, docking experiments were conducted to propose a plausible mechanism for the behavior of 1.
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Affiliation(s)
- Kazuki Hashimoto
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
| | - Kana Kimura
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
| | - Kotaro Ishida
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka 020-8550, Japan
| | - Eiji Morita
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
| | - Kazuaki Tanaka
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
| | - Masaru Hashimoto
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
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7
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Miura S, Ishida K, Tanaka K, Morita E, Hashimoto M. Integrasone Derivatives Isolated from Lepteutypa sp. KT4162 and Their Anti-HIV-1 Integrase Activity. J Nat Prod 2023; 86:1019-1024. [PMID: 36898139 DOI: 10.1021/acs.jnatprod.3c00065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Five integrasone derivatives, integrasone C (1), isointegrasone C (2), integrasone D1 (3), integrasone D2 (4), and integrasone E (5), were isolated from the culture broth of Lepteutypa sp. KT4162. Neither conventional NMR analyses nor DFT (density functional theory)-based computationally assisted chemical shift discussions were sufficient to elucidate the relative configuration of the 1,4-epoxydiol moiety. A combined analysis using the calculated nJCH values and HMBC spectra was helpful to establish the relative configuration. The absolute configurations of 1-5 were determined using DFT-based ECD (electronic circular dichroism) spectral analysis. Biological assays of these compounds revealed that 2 potently inhibits HIV-1 integrase without cytotoxicity.
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Affiliation(s)
- Satomi Miura
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki 036-8561, Japan
| | - Kotaro Ishida
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka 020-8550, Japan
| | - Kazuaki Tanaka
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki 036-8561, Japan
| | - Eiji Morita
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki 036-8561, Japan
| | - Masaru Hashimoto
- Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki 036-8561, Japan
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8
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Itazawa T, Morita E, Koga T, Okada K, Shimizu T, Ueda Y. The Value of IL-25, IL-33, and TSLP in Nasal Secretions as a Biomarker of Severity of Allergic Rhinitis in Children. J Allergy Clin Immunol 2023. [DOI: 10.1016/j.jaci.2022.12.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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9
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Arakawa M, Yoshida A, Okamura S, Ebina H, Morita E. A highly sensitive NanoLuc-based protease biosensor for detecting apoptosis and SARS-CoV-2 infection. Sci Rep 2023; 13:1753. [PMID: 36720982 PMCID: PMC9887574 DOI: 10.1038/s41598-023-28984-4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 01/27/2023] [Indexed: 02/02/2023] Open
Abstract
Proteases play critical roles in various biological processes, including apoptosis and viral infection. Several protease biosensors have been developed; however, obtaining a reliable signal from a very low level of endogenous protease activity remains a challenge. In this study, we developed a highly sensitive protease biosensor, named FlipNanoLuc, based on the Oplophorus gracilirostris NanoLuc luciferase. The flipped β-strand was restored by protease activation and cleavage, resulting in the reconstitution of luciferase and enzymatic activity. By making several modifications, such as introducing NanoBiT technology and CL1-PEST1 degradation tag, the FlipNanoLuc-based protease biosensor system achieved more than 500-fold luminescence increase in the corresponding protease-overexpressing cells. We demonstrated that the FlipNanoLuc-based caspase sensor can be utilized for the detection of staurosporine-induced apoptosis with sixfold increase in luminescence. Furthermore, we also demonstrated that the FlipNanoLuc-based coronavirus 3CL-protease sensor can be used to detect human coronavirus OC43 with tenfold increase in luminescence and severe acute respiratory syndrome-coronavirus-2 infections with 20-fold increase in luminescence by introducing the stem-loop 1 sequence to prevent the virus inducing global translational shutdown.
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Affiliation(s)
- Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-Cho, Hirosaki-Shi, Aomori, 036-8561, Japan.,Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, Morioka, 020-0066, Japan
| | - Akiho Yoshida
- Virus Vaccine Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan.,The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Shinya Okamura
- Virus Vaccine Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan.,The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Hirotaka Ebina
- Virus Vaccine Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan.,Virus Vaccine Group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-Cho, Hirosaki-Shi, Aomori, 036-8561, Japan. .,Division of Biomolecular Function, Bioresources Science, United Graduate School of Agricultural Sciences, Iwate University, Morioka, 020-0066, Japan.
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10
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Arakawa M, Morita E. Protein Pull-down Assay Using HiBiT-tag-dependent Luciferase Activity Measurement. Bio Protoc 2023; 13:e4640. [PMID: 36968438 PMCID: PMC10031519 DOI: 10.21769/bioprotoc.4640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/22/2022] [Accepted: 02/19/2023] [Indexed: 03/19/2023] Open
Abstract
Co-immunoprecipitation or pull-down assays are frequently used to analyze protein-protein interactions. In these experiments, western blotting is commonly used to detect prey proteins. However, sensitivity and quantification problems remain in this detection system. Recently, the HiBiT-tag-dependent NanoLuc luciferase system was developed as a highly sensitive detection system for small amounts of proteins. In this report, we introduce the method of using HiBiT technology for the detection of prey protein in a pull-down assay. Using this protocol, we demonstrate the formation of a ternary complex consisting of Japanese encephalitis virus NS4B and two host factors, namely valosin-containing protein, and nuclear protein localization protein 4, which is a critical biological event during flavivirus replication in cells.
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Affiliation(s)
- Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi, Aomori, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi, Aomori, Japan
- *For correspondence:
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11
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Suzuki H, Noguchi T, Matsugu N, Suzuki A, Kimura S, Onishi M, Kosaka M, Miyazato P, Morita E, Ebina H. Safety and immunogenicity of parvovirus B19 virus-like particle vaccine lacking phospholipase A2 activity. Vaccine 2022; 40:6100-6106. [PMID: 36114131 DOI: 10.1016/j.vaccine.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/14/2022] [Accepted: 09/02/2022] [Indexed: 10/14/2022]
Abstract
Parvovirus B19 (B19) belongs to the Erythroparvovirus genus and is known to cause the fifth disease in children. Primary infection of pregnant women is associated with a high risk of hydrops fetalis and stillbirth due to severe fetal anemia. Virus-like particle (VLP) vaccine candidates for B19 have been developed, although none have been approved so far. The B19 phospholipase A2 domain (B19 PLA2), located in the VP1 unique region, is believed to be associated with adverse inflammatory reactions, and previous effective attempts to improve this vaccine modality inserted a mutation to impair the PLA2 activity of VLPs. In this study, we designed VLPs with a deletion mutant of PLA2 (⊿PLA2 B19 VLP), devoid of PLA2 activity, and confirmed their immunogenicity and safe use in vivo. These results were supported by the lack of histological inflammatory reactions at the site of immunization or the production of IL-6 in ⊿PLA2 B19 VLP-immunized mice, that were observed in mice immunized with B19 VLPs. CD4+ T cells from mice vaccinated with VLPs and B19-seropositive human samples were not activated by B19 PLA2 stimulation, suggesting that the B19 PLA2 domain does not constitute a major CD4+ T cell epitope. Most importantly, the ⊿PLA2 B19 VLPs induced neutralizing antibodies against B19, in levels similar to those found in B19-seropositive human samples, indicating that they could be used as a safe and effective vaccine candidate against B19.
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Affiliation(s)
- Hidehiko Suzuki
- Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Takafumi Noguchi
- Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Noriko Matsugu
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Akio Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Sakika Kimura
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
| | - Misa Onishi
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Mitsuyo Kosaka
- Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Paola Miyazato
- Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
| | - Hirotaka Ebina
- Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan; Virus vaccine group, BIKEN Innovative Vaccine Research Alliance Laboratories, Research institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.
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12
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Liu CC, Liu YY, Zhou JF, Chen X, Chen H, Hu JH, Chen J, Zhang J, Sun RC, Wei JC, Go YY, Morita E, Zhou B. Cellular ESCRT components are recruited to regulate the endocytic trafficking and RNA replication compartment assembly during classical swine fever virus infection. PLoS Pathog 2022; 18:e1010294. [PMID: 35120190 PMCID: PMC8849529 DOI: 10.1371/journal.ppat.1010294] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 02/16/2022] [Accepted: 01/24/2022] [Indexed: 11/29/2022] Open
Abstract
As the important molecular machinery for membrane protein sorting in eukaryotic cells, the endosomal sorting and transport complexes (ESCRT-0/I/II/III and VPS4) usually participate in various replication stages of enveloped viruses, such as endocytosis and budding. The main subunit of ESCRT-I, Tsg101, has been previously revealed to play a role in the entry and replication of classical swine fever virus (CSFV). However, the effect of the whole ESCRT machinery during CSFV infection has not yet been well defined. Here, we systematically determine the effects of subunits of ESCRT on entry, replication, and budding of CSFV by genetic analysis. We show that EAP20 (VPS25) (ESCRT-II), CHMP4B and CHMP7 (ESCRT-III) regulate CSFV entry and assist vesicles in transporting CSFV from Clathrin, early endosomes, late endosomes to lysosomes. Importantly, we first demonstrate that HRS (ESCRT-0), VPS28 (ESCRT-I), VPS25 (ESCRT-II) and adaptor protein ALIX play important roles in the formation of virus replication complexes (VRC) together with CHMP2B/4B/7 (ESCRT-III), and VPS4A. Further analyses reveal these subunits interact with CSFV nonstructural proteins (NS) and locate in the endoplasmic reticulum, but not Golgi, suggesting the role of ESCRT in regulating VRC assembly. In addition, we demonstrate that VPS4A is close to lipid droplets (LDs), indicating the importance of lipid metabolism in the formation of VRC and nucleic acid production. Altogether, we draw a new picture of cellular ESCRT machinery in CSFV entry and VRC formation, which could provide alternative strategies for preventing and controlling the diseases caused by CSFV or other Pestivirus. ESCRT machinery can be responsible for virus budding and participate in regulating virus entry. However, little has been reported on its effects on VRC formation. Here, we uncover the novel roles of ESCRT-III and VPS4A in VRC assembly and update the additional subunits involved in the intracellular trafficking of CSFV. These data indicate that the ESCRT machinery promotes CSFV replication by forming VRC, which making it become nuclease-insensitive to avoid the recognition by the host antiviral surveillance system and the destruction of the viral RNA. Furthermore, we first demonstrate that the roles of ESCRT components in the formation of VRC in swine Pestivirus. Our findings highlight the growing evidence of diverse interactions between ESCRT subunits and viral factors of Flaviviridae family, and provide alternative strategies for preventing and controlling the diseases caused by CSFV or other Pestivirus.
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Affiliation(s)
- Chun-chun Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Ya-yun Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jiang-fei Zhou
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xi Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Huan Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jia-huan Hu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jing Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jin Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Rui-cong Sun
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jian-chao Wei
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Yun Young Go
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Hong Kong SAR, China
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
| | - Bin Zhou
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
- * E-mail:
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Itazawa T, Ueda Y, Koga T, Okada K, Shimizu T, Morita E, Tokuyama K. Potential of BAFF in Nasal Secretions as a Marker of Allergic Rhinitis Severity in Children. J Allergy Clin Immunol 2022. [DOI: 10.1016/j.jaci.2021.12.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Okudera M, Odawara M, Arakawa M, Kawaguchi S, Seya K, Matsumiya T, Sato R, Ding J, Morita E, Imaizumi T. Expression of Zinc-Finger Antiviral Protein in hCMEC/D3 Human Cerebral Microvascular Endothelial Cells: Effect of a Toll-Like Receptor 3 Agonist. Neuroimmunomodulation 2022; 29:349-358. [PMID: 34937041 DOI: 10.1159/000521012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 11/08/2021] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION Invasion of viruses into the brain causes viral encephalitis, which can be fatal and causes permanent brain damage. The blood-brain barrier (BBB) protects the brain by excluding harmful substances and microbes. Brain microvascular endothelial cells are important components of the BBB; however, the mechanisms of antiviral reactions in these cells have not been fully elucidated. Zinc-finger antiviral protein (ZAP) is a molecule that restricts the infection of various viruses, and there are 2 major isoforms: ZAPL and ZAPS. Toll-like receptor 3 (TLR3), a pattern-recognition receptor against viral double-stranded RNA, is implicated in antiviral innate immune reactions. The aim of this study was to investigate the expression of ZAP in cultured hCMEC/D3 human brain microvascular endothelial cells treated with an authentic TLR3 agonist polyinosinic-polycytidylic acid (poly IC). METHODS hCMEC/D3 cells were cultured and treated with poly IC. Expression of ZAPL and ZAPS mRNA was investigated using quantitative reverse transcription-polymerase chain reaction, and protein expression of these molecules was examined using western blotting. The role of nuclear factor-κB (NF-κB) was examined using the NF-κB inhibitor, SN50. The roles of interferon (IFN)-β, IFN regulatory factor 3 (IRF3), tripartite motif protein 25 (TRIM25), and retinoic acid-inducible gene-I (RIG-I) in poly IC-induced ZAPS expression were examined using RNA interference. Propagation of Japanese encephalitis virus (JEV) was examined using a focus-forming assay. RESULTS ZAPS mRNA and protein expression was upregulated by poly IC, whereas the change of ZAPL mRNA and protein levels was minimal. Knockdown of IRF3 or TRIM25 decreased the poly IC-induced upregulation of ZAPS, whereas knockdown of IFN-β or RIG-I did not affect ZAPS upregulation. SN50 did not affect ZAPS expression. Knockdown of ZAP enhanced JEV propagation. CONCLUSION ZAPL and ZAPS were expressed in hCMEC/D3 cells, and ZAPS expression was upregulated by poly IC. IRF3 and TRIM25 are involved in poly IC-induced upregulation of ZAPS. ZAP may contribute to antiviral reactions in brain microvascular endothelial cells and protect the brain from invading viruses such as JEV.
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Affiliation(s)
- Mako Okudera
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Minami Odawara
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
| | - Shogo Kawaguchi
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kazuhiko Seya
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tomoh Matsumiya
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Riko Sato
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Jiangli Ding
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
| | - Tadaatsu Imaizumi
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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15
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Koga T, Tokuyama K, Ogawa S, Morita E, Ueda Y, Itazawa T, Kamijyo A. Surveillance of pollen-food allergy syndrome in elementary and junior high school children in Saitama, Japan. Asia Pac Allergy 2022; 12:e3. [PMID: 35174054 PMCID: PMC8819423 DOI: 10.5415/apallergy.2022.12.e3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/13/2022] [Indexed: 11/16/2022] Open
Abstract
Background Because few studies have epidemiologically evaluated pollen-food allergy syndrome (PFAS), relevant information about this disease is limited in children. Objective We wanted to clarify the epidemiological details of PFAS by creating a questionnaire which enables to distinguish class 2 food allergy from that of class 1. Methods We conducted a questionnaire survey for schoolchildren attending to public elementary and junior high schools. In this questionnaire, we asked about both the allergy to fruits and/or vegetables and allergic rhinitis (AR). PFAS was, then, defined as allergy for fruits and/or vegetable which occurred after the symptoms of AR appeared. Results A total of 2,346 children (median age, 10.6±2.5 years; 1,157 boys) were evaluated. The prevalence of PFAS was 6.9% among subjects. The mean ages in the onset of AR and PFAS were 4.59±2.76 and 7.38±3.17 years old, respectively. Various kinds of foods were shown to be causative, among which kiwifruits were the commonest. As high as approximately 30% of children with PFAS experienced systemic symptoms including cutaneous (21.8%) and respiratory symptoms (9.6%). Anaphylaxis was diagnosed in 5.8% children. Conclusion Our results indicated that the prevalence of PFAS was getting higher and the mean age of onset was getting lower. These may be attributed to the increasing number of patients with AR and also to the lower age of onset of AR. We have to be careful to not only local but also systemic symptoms when examining children with PFAS.
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Affiliation(s)
- Takeshi Koga
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Kenichi Tokuyama
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Shunichi Ogawa
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Eiji Morita
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Yutaka Ueda
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Toshiko Itazawa
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Atsushi Kamijyo
- Department of Otorhinolaryngology, Saitama Medical University Hospital, Saitama, Japan
- Allergy Center, Saitama Medical University Hospital, Saitama, Japan
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16
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Chinuki Y, Morita E, Takahashi H. IgE antibodies to galactose-a-1,3-galactose, an epitope of red meat allergen, cross-react with a novel flounder roe allergen. J Investig Allergol Clin Immunol 2021; 32:324-326. [PMID: 34661535 DOI: 10.18176/jiaci.0754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Y Chinuki
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Japan
| | - E Morita
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Japan
| | - H Takahashi
- Office of Academic Research and Industry-Government Collaboration, Hiroshima University, Hiroshima, Japan
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Tabata K, Ueda Y, Okada K, Shimizu T, Ogawa S, Koga T, Morita E, Itazawa T, Tokuyama K. [A PEDIATRIC CASE OF DIFFUSE PANBRONCHIOLITIS WHO PREDOMINANTLY SHOWED RESTRICTIVE PULMONARY DYSFUNCTION AND DRAMATICALLY RESPONDED TO MACROLIDE LOW-DOSE LONG-TERM THERAPY.]. Arerugi 2021; 70:310-314. [PMID: 34135254 DOI: 10.15036/arerugi.70.310] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A 12-year-old boy visited our hospital with complaints of chronic cough and dyspnea. Chest X-ray and CT revealed diffuse granular shadow in the bilateral lung fields and "Tree-in-bud appearance" in the peripheral airways, respectively. Sinusitis was present, and restrictive disorder was predominantly found in pulmonary function. The patient was diagnosed with DPB, and long-term therapy was started with low-dose clarithromycin (CAM), The patient showed a dramatic response to CAM, with improvements of both the clinical symptoms and pulmonary function within 1-2 months. According to the relevant literature, in adult patients with this disease, pulmonary dysfunction starts from an obstructive pattern; however, this is not the case in pediatric patients. It was therefore suggested that the mechanisms underlying the development of pulmonary dysfunction in cases of childhood onset differs from those with an adult onset.
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Affiliation(s)
| | - Yutaka Ueda
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Keisuke Okada
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Takahiro Shimizu
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Shunichi Ogawa
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Takeshi Koga
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Eiji Morita
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Toshiko Itazawa
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
| | - Kenichi Tokuyama
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy Center, Saitama Medical University Hospital
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Morita E, Suzuki Y. Membrane-Associated Flavivirus Replication Complex-Its Organization and Regulation. Viruses 2021; 13:v13061060. [PMID: 34205058 PMCID: PMC8228428 DOI: 10.3390/v13061060] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/02/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023] Open
Abstract
Flavivirus consists of a large number of arthropod-borne viruses, many of which cause life-threatening diseases in humans. A characteristic feature of flavivirus infection is to induce the rearrangement of intracellular membrane structure in the cytoplasm. This unique membranous structure called replication organelle is considered as a microenvironment that provides factors required for the activity of the flaviviral replication complex. The replication organelle serves as a place to coordinate viral RNA amplification, protein translation, and virion assembly and also to protect the viral replication complex from the cellular immune defense system. In this review, we summarize the current understanding of how the formation and function of membrane-associated flaviviral replication organelle are regulated by cellular factors.
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Affiliation(s)
- Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi 036-8561, Japan
- Correspondence: (E.M.); (Y.S.); Tel.: +81-172-39-3586 (E.M.); +81-72-684-7367 (Y.S.)
| | - Youichi Suzuki
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki 569-8686, Japan
- Correspondence: (E.M.); (Y.S.); Tel.: +81-172-39-3586 (E.M.); +81-72-684-7367 (Y.S.)
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19
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Teranishi H, Koga T, Ueda Y, Shimizu T, Okada K, Ogawa S, Morita E, Itazawa T, Tokuyama K. [A CASE OF VOCAL CORD DYSFUNCTION, WHO USED ADRENALIN AUTOINJECTOR (EPIPEN ®) FREQUENTLY AFTER BEING DIAGNOSED AS ANAPHYLAXIS]. Arerugi 2021; 70:210-214. [PMID: 34011776 DOI: 10.15036/arerugi.70.210] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We experienced a case of vocal cord dysfunction (VCD) in a child to whom an adrenaline autoinjector (Epipen®) had been prescribed and frequently used following a diagnosis of exercise-induced anaphylaxis. An exercise test was performed to investigate her frequent episodes of anaphylaxis-like symptoms. A few minutes after starting the test, signs of dyspnea, such as throat tightness and stridor, appeared, although hypoxia was not present and her respiratory sounds were normal. Medications were not effective for treating her respiratory symptoms. Laryngoscopy performed at the test revealed bizarre vocal cord movement, which was diagnosed as VCD. The symptoms gradually diminished after the initiation of biofeedback therapy, including pursed lips breathing and abdominal breathing. Thereafter, she did not use an adrenaline autoinjector when symptoms appeared; instead, she would perform biofeedback therapy before using the adrenaline autoinjector. Thus, VCD should be included in the differential diagnosis of patients who show anaphylactic symptoms that are resistant to preventive therapy.
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Affiliation(s)
| | - Takeshi Koga
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Yutaka Ueda
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Takahiro Shimizu
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Keisuke Okada
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Shunichi Ogawa
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Eiji Morita
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Toshiko Itazawa
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
| | - Kenichi Tokuyama
- Department of Pediatrics, Saitama Medical University Hospital.,Allergy center, Saitama Medical University Hospital
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20
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Ogino R, Chinuki Y, Tobita R, Morita E. Identification of Ribosomal Proteins as Cross-Reactive Allergens in a Case of Mushroom Food Allergy. J Investig Allergol Clin Immunol 2021; 32:58-60. [PMID: 33944785 DOI: 10.18176/jiaci.0700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- R Ogino
- Department of Dermatology, Faculty of Medicine, Shimane University, Izumo, Japan
| | - Y Chinuki
- Department of Dermatology, Faculty of Medicine, Shimane University, Izumo, Japan
| | - R Tobita
- Department of Dermatology, Faculty of Medicine, Shimane University, Izumo, Japan
| | - E Morita
- Department of Dermatology, Faculty of Medicine, Shimane University, Izumo, Japan
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21
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Goto S, Ishida K, Suzuki R, Morita E. Split Nano Luciferase-based Assay to Measure Assembly of Japanese Encephalitis Virus. Bio Protoc 2020; 10:e3606. [PMID: 33659571 DOI: 10.21769/bioprotoc.3606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/25/2020] [Accepted: 03/29/2020] [Indexed: 11/02/2022] Open
Abstract
Cells infected with flavivirus release various forms of infectious and non-infectious particles as products and by-products. Comprehensive profiling of the released particles by density gradient centrifugation is informative for understanding viral particle assembly. However, it is difficult to detect low-abundance minor particles in such analyses. We developed a method for viral particle analysis that integrates a high-sensitivity split luciferase system and density gradient centrifugation. This protocol enables high-resolution profiling of particles produced by cells expressing Japanese encephalitis virus factors.
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Affiliation(s)
- Simon Goto
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi, Aomori, Japan
| | - Kotaro Ishida
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi, Aomori, Japan
| | - Ryosuke Suzuki
- Department of Virology II, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki-shi, Aomori, Japan
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22
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Suzuki C, Morita E, Matsumoto S, Ishihara A, Ikeda Y, Muroi K, Ishitsuka M, Hori D, Doki S, Oi Y, Sasahara S, Matsuzaki I, Yanagisawa M, Satoh M. Association of self-rated sleep apnea with hypertension, dyslipidemia and diabetes mellitus: slept study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Chinuki Y, Ito K, Morita E. 128 Measurement of galactose-alpha-1,3-galactose-related specific IgE before the first administration of cetuximab can reduce the incidence of cetuximab-induced anaphylactic shock. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Morita E, Ogino R, Chinuki Y, Yokooji T, Matsuo H. 145 Establishment of wheat peroxidase I-specific IgE test to identify wheat-dependent exercise-induced anaphylaxis developed by sensitization to grass pollen. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Nakagawa Y, Chinuki Y, Ueda K, Tsedendorj O, Ugajin T, Yokozeki H, Morita E. 175 Prevalence and regional differences of sensitization to galactose-α-1,3-galactose and/or cetuximab in Japan. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Morita E, Tokuyama K, Ueda Y, Koga T, Ogawa S, Nishimura H. Airway reversibility and inflammation in stable pre- to late-adolescent asthmatics without long-term control medications. J Asthma 2019; 57:1298-1307. [PMID: 31433689 DOI: 10.1080/02770903.2019.1652641] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: Pulmonary function and airway inflammation were investigated in stable pre- to late-adolescent asthmatics without long-term control medications and compared with those in currently medicated asthmatics.Methods: Subjects comprised 34 well-controlled asthmatic children (aged 8.1-18.0 years; group without medication). Flow volume curves before and after inhaling a β2 agonist, a bronchodilator (BD), were compared and fractional exhaled nitric oxide (FENO) concentrations were measured. All patients were attack-free for at least 12 months prior to testing without the use of asthma medications for at least three months. Fifty-one age-matched stable asthmatics with medications at the time of the present study (group with current medication) underwent the same examinations.Results: The rate of children whose respiratory function after BD improved by 20% or more in both the central and peripheral airways (High responder at total airways subtype: HTA) was significantly higher in the group without medication than in that with current medication (17.6 and 2.0%, respectively; p < 0.01). Furthermore, FEV1.0% pred after BD was significantly lower for HTA than for the low responder subtype in the same group (94.8 ± 3.5 and 104.1 ± 1.5% respectively, p < 0.05). FENO concentrations in the group without medication were high, but not significantly different from those in the group with current medication.Conclusions: Stable asthmatic children without medication include a certain percentage of those with irreversible airflow limitation possibly due to airway remodeling. The control of daily asthma symptoms with long-term control medications may effectively prevent airway remodeling.
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Affiliation(s)
- Eiji Morita
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Kenichi Tokuyama
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Yutaka Ueda
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Takeshi Koga
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University Hospital, Saitama, Japan
| | - Shunichi Ogawa
- Department of Pediatrics, Saitama Medical University, Saitama, Japan.,Allergy Center, Saitama Medical University Hospital, Saitama, Japan
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Morita E. Membrane closure in stress induced-autophagosome formation. Cell Stress 2018; 2:122-124. [PMID: 31223143 PMCID: PMC6551682 DOI: 10.15698/cst2018.06.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University
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Tsedendorj O, Chinuki Y, Ueda K, Yamasaki K, Kikuchi K, Ito Y, Aiba S, Morita E. 249 Different prevalence of sensitization against galactose--1,3-galactose between Shimane and Miyagi in Japan. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Morita E, Tokuyama K, Ueda Y, Koga T, Ogawa S, Nishimura H. Characteristic features of airflow limitation and airway inflammation in stable school-aged asthmatics without requiring medication. J Allergy Clin Immunol 2018. [DOI: 10.1016/j.jaci.2017.12.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Tsedendorj O, Morita E. 168 Tropomyosin is minor but distinct allergen in the patients with shrimp allergies. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Kikkawa S, Kamijo A, Nakagome K, Soma T, Kobayashi T, Uchida Y, Morita E, Nagata M, Inoue T, Kase Y. [ANALYSIS OF BACKGROUNDS AND LEVEL OF UNDERSTANDING OF TREATMENT OF POOR ADHERENCE AND DROPOUT CASES ON SUBLINGUAL IMMUNOTHERAPY FOR JAPANESE CEDAR POLLINOSIS IN THE FIRST FOLLOW-UP YEAR]. Arerugi 2017; 66:1165-1171. [PMID: 29129887 DOI: 10.15036/arerugi.66.1165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND We considered the factors of poor adherence to and dropout from sublingual immunotherapy (SLIT) by verifying patient backgrounds 1 year after start of treatment. METHODS We recruited 38 patients who began SLIT between November 2014 and September 2015. We analyzed their attributes and level of understanding of the treatment, and conducted a self-reported survey on factors behind dropout cases and poor adherence cases. RESULTS Four patients dropped out 1 year after start of treatment. Three left for reasons related to anxiety about side effects. There were five cases of poor adherence. There was no significant difference between good adherence, poor adherence, and dropout regarding level of understanding of the treatment (p=0.59). In the comparison between good and poor adherence groups, except four dropout patients, the adherence tended to be poor in patients with short duration of disease, smoking patients, and young patients. Continuous rate of SLIT achieved about 90%, suggesting relatively high level of adherence. CONCLUSION It appears possible that anxiety related to side effects could be a factor affecting dropout from SLIT. There was no significant difference regarding level of understanding of the treatment. The adherence tended to be poor in patients with short duration of disease, smoking patients, and young patients.
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Affiliation(s)
- Sayaka Kikkawa
- Department of Otorhinolaryngology, Saitama Medical University
- Allergy Center, Saitama Medical University
- Department of Otolaryngology, Chigasaki Central Hospital
| | - Atsushi Kamijo
- Department of Otorhinolaryngology, Saitama Medical University
- Allergy Center, Saitama Medical University
- Department of Otorhinolaryngology, Yamanashi University Hospital
| | - Kazuyuki Nakagome
- Allergy Center, Saitama Medical University
- Department of Respiratory Medicine, Saitama Medical University
| | - Tomoyuki Soma
- Allergy Center, Saitama Medical University
- Department of Respiratory Medicine, Saitama Medical University
| | - Takehito Kobayashi
- Allergy Center, Saitama Medical University
- Department of General Internal Medicine, Saitama Medical University
| | - Yoshitaka Uchida
- Allergy Center, Saitama Medical University
- Department of Respiratory Medicine, Saitama Medical University
| | - Eiji Morita
- Allergy Center, Saitama Medical University
- Department of Pediatrics, Saitama Medical University
| | - Makoto Nagata
- Allergy Center, Saitama Medical University
- Department of Respiratory Medicine, Saitama Medical University
| | - Tomoe Inoue
- Department of Otorhinolaryngology, Saitama Medical University
- Allergy Center, Saitama Medical University
| | - Yasuhiro Kase
- Department of Otorhinolaryngology, Saitama Medical University
- Allergy Center, Saitama Medical University
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Iijima S, Toyokawa S, Morita E, Quigley PA. ISQUA16-1327ESTIMATING THE EFFECTS OF FALL PREVENTION INTERVENTIONS BY ADJUSTING FOR THE RISK OF FALLING WITH A PROPENSITY SCORE. Int J Qual Health Care 2016. [DOI: 10.1093/intqhc/mzw104.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tabata K, Arimoto M, Arakawa M, Nara A, Saito K, Omori H, Arai A, Ishikawa T, Konishi E, Suzuki R, Matsuura Y, Morita E. Unique Requirement for ESCRT Factors in Flavivirus Particle Formation on the Endoplasmic Reticulum. Cell Rep 2016; 16:2339-47. [PMID: 27545892 DOI: 10.1016/j.celrep.2016.07.068] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 07/05/2016] [Accepted: 07/25/2016] [Indexed: 11/28/2022] Open
Abstract
Flavivirus infection induces endoplasmic reticulum (ER) membrane rearrangements to generate a compartment for replication of the viral genome and assembly of viral particles. Using quantitative mass spectrometry, we identified several ESCRT (endosomal sorting complex required for transport) proteins that are recruited to sites of virus replication on the ER. Systematic small interfering RNA (siRNA) screening revealed that release of both dengue virus and Japanese encephalitis virus was dramatically decreased by single depletion of TSG101 or co-depletion of specific combinations of ESCRT-III proteins, resulting in ≥1,000-fold titer reductions. By contrast, release was unaffected by depletion of some core ESCRTs, including VPS4. Reintroduction of ESCRT proteins to siRNA-depleted cells revealed interactions among ESCRT proteins that are crucial for flavivirus budding. Electron-microscopy studies revealed that the CHMP2 and CHMP4 proteins function directly in membrane deformation at the ER. Thus, a unique and specific subset of ESCRT contributes to ER membrane biogenesis during flavivirus infection.
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Affiliation(s)
- Keisuke Tabata
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Masaru Arimoto
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki 036-8561, Japan
| | - Atsuki Nara
- Faculty of Bioscience, Nagahama Institute of Bio-science and Technology, Nagahama 526-0829, Japan
| | - Kazunobu Saito
- Core Instrumentation Facility, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Hiroko Omori
- Core Instrumentation Facility, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Arisa Arai
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki 036-8561, Japan
| | - Tomohiro Ishikawa
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293 Japan
| | - Eiji Konishi
- BIKEN Endowed Department of Dengue Vaccine Development, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; BIKEN Endowed Department of Dengue Vaccine Development, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Ryosuke Suzuki
- Department of Virology II, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Yoshiharu Matsuura
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Eiji Morita
- Laboratory of Viral Infection, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki 036-8561, Japan.
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Adachi N, Adamovitch V, Adjovi Y, Aida K, Akamatsu H, Akiyama S, Akli A, Ando A, Andrault T, Antonietti H, Anzai S, Arkoun G, Avenoso C, Ayrault D, Banasiewicz M, Banaśkiewicz M, Bernardini L, Bernard E, Berthet E, Blanchard M, Boreyko D, Boros K, Charron S, Cornette P, Czerkas K, Dameron M, Date I, De Pontbriand M, Demangeau F, Dobaczewski Ł, Dobrzyński L, Ducouret A, Dziedzic M, Ecalle A, Edon V, Endo K, Endo T, Endo Y, Etryk D, Fabiszewska M, Fang S, Fauchier D, Felici F, Fujiwara Y, Gardais C, Gaul W, Gurin L, Hakoda R, Hamamatsu I, Handa K, Haneda H, Hara T, Hashimoto M, Hashimoto T, Hashimoto K, Hata D, Hattori M, Hayano R, Hayashi R, Higasi H, Hiruta M, Honda A, Horikawa Y, Horiuchi H, Hozumi Y, Ide M, Ihara S, Ikoma T, Inohara Y, Itazu M, Ito A, Janvrin J, Jout I, Kanda H, Kanemori G, Kanno M, Kanomata N, Kato T, Kato S, Katsu J, Kawasaki Y, Kikuchi K, Kilian P, Kimura N, Kiya M, Klepuszewski M, Kluchnikov E, Kodama Y, Kokubun R, Konishi F, Konno A, Kontsevoy V, Koori A, Koutaka A, Kowol A, Koyama Y, Kozioł M, Kozue M, Kravtchenko O, Kruczała W, Kudła M, Kudo H, Kumagai R, Kurogome K, Kurosu A, Kuse M, Lacombe A, Lefaillet E, Magara M, Malinowska J, Malinowski M, Maroselli V, Masui Y, Matsukawa K, Matsuya K, Matusik B, Maulny M, Mazur P, Miyake C, Miyamoto Y, Miyata K, Miyata K, Miyazaki M, Molȩda M, Morioka T, Morita E, Muto K, Nadamoto H, Nadzikiewicz M, Nagashima K, Nakade M, Nakayama C, Nakazawa H, Nihei Y, Nikul R, Niwa S, Niwa O, Nogi M, Nomura K, Ogata D, Ohguchi H, Ohno J, Okabe M, Okada M, Okada Y, Omi N, Onodera H, Onodera K, Ooki S, Oonishi K, Oonuma H, Ooshima H, Oouchi H, Orsucci M, Paoli M, Penaud M, Perdrisot C, Petit M, Piskowski A, Płocharski A, Polis A, Polti L, Potsepnia T, Przybylski D, Pytel M, Quillet W, Remy A, Robert C, Sadowski M, Saito M, Sakuma D, Sano K, Sasaki Y, Sato N, Schneider T, Schneider C, Schwartzman K, Selivanov E, Sezaki M, Shiroishi K, Shustava I, Śniecińska A, Stalchenko E, Staroń A, Stromboni M, Studzińska W, Sugisaki H, Sukegawa T, Sumida M, Suzuki Y, Suzuki K, Suzuki R, Suzuki H, Suzuki K, Świderski W, Szudejko M, Szymaszek M, Tada J, Taguchi H, Takahashi K, Tanaka D, Tanaka G, Tanaka S, Tanino K, Tazbir K, Tcesnokova N, Tgawa N, Toda N, Tsuchiya H, Tsukamoto H, Tsushima T, Tsutsumi K, Umemura H, Uno M, Usui A, Utsumi H, Vaucelle M, Wada Y, Watanabe K, Watanabe S, Watase K, Witkowski M, Yamaki T, Yamamoto J, Yamamoto T, Yamashita M, Yanai M, Yasuda K, Yoshida Y, Yoshida A, Yoshimura K, Żmijewska M, Zuclarelli E. Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus-the 'D-shuttle' project. J Radiol Prot 2016; 36:49-66. [PMID: 26613195 DOI: 10.1088/0952-4746/36/1/49] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries.
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Affiliation(s)
- N Adachi
- Adachi High School, 2-347 Kakunai, Nihonmatsu, Fukushima 964-0904, Japan
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Chinuki Y, Ishiwata K, Yamaji K, Takahashi H, Morita E. Haemaphysalis longicornis tick bites are a possible cause of red meat allergy in Japan. Allergy 2016; 71:421-5. [PMID: 26551325 DOI: 10.1111/all.12804] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2015] [Indexed: 11/26/2022]
Abstract
Recent studies revealed that Amblyomma or Ixodes tick bites may cause red meat allergy, in which galactose-α-1,3-galactose (α-Gal) is a major IgE-binding epitope. The incidence of red meat allergy is high in Shimane Prefecture, as is tick-transmitted Japanese spotted fever. Therefore, we speculated that tick bites may cause these meat allergies. The carbohydrate α-Gal was detected in the salivary gland protein of Haemaphysalis longicornis (H. longicornis), the vector for Japanese spotted fever, by immunoblotting using anti-α-Gal antibody. H. longicornis salivary gland protein-specific IgE was detected in the sera of 24 of 30 patients with red meat allergies. Sensitization to tick salivary gland protein containing α-Gal is possibly a major etiology of red meat allergy; the carbohydrate plays a crucial role in its allergenicity. These results further indicate that the α-Gal epitope is present not only in Amblyomma or Ixodes, but also in Haemaphysalis.
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Affiliation(s)
- Y. Chinuki
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
| | - K. Ishiwata
- Department of Tropical Medicine; Jikei University School of Medicine; Tokyo Japan
| | - K. Yamaji
- Department of Tropical Medicine; Jikei University School of Medicine; Tokyo Japan
| | - H. Takahashi
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
| | - E. Morita
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
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Hao F, Itoh T, Morita E, Shirahama-Noda K, Yoshimori T, Noda T. The PtdIns3-phosphatase MTMR3 interacts with mTORC1 and suppresses its activity. FEBS Lett 2015; 590:161-73. [PMID: 26787466 PMCID: PMC5064752 DOI: 10.1002/1873-3468.12048] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 10/23/2015] [Revised: 12/11/2015] [Accepted: 12/13/2015] [Indexed: 12/12/2022]
Abstract
Macroautophagy is a major intracellular degradation system. We previously reported that overexpression of phosphatase-deficient MTMR3, a member of the myotubularin phosphatidylinositol (PI) 3-phosphatase family, leads to induction of autophagy. In this study, we found that MTMR3 interacted with mTORC1, an evolutionarily conserved serine/threonine kinase complex, which regulates cell growth and autophagy in response to environmental stimuli. Furthermore, overexpression of MTMR3 inhibited mTORC1 activity. The N-terminal half of MTMR3, including the PH-G and phosphatase domains, was necessary and sufficient for these effects. Phosphatase-deficient MTMR3 provided more robust suppression of mTORC1 activity than wild-type MTMR3. Furthermore, phosphatase-deficient full length MTMR3 and the phosphatase domain alone were localized to the Golgi. These results suggest a new regulatory mechanism of mTORC1 in association with PI3P.
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Affiliation(s)
- Feike Hao
- Center for Frontier Oral Science, Graduate School of Dentistry, Osaka University, Japan.,Department of Genetics, Graduate School of Medicine, Osaka University, Japan
| | - Takashi Itoh
- Center for Frontier Oral Science, Graduate School of Dentistry, Osaka University, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Japan
| | - Kanae Shirahama-Noda
- Center for Frontier Oral Science, Graduate School of Dentistry, Osaka University, Japan
| | - Tamotsu Yoshimori
- Department of Genetics, Graduate School of Medicine, Osaka University, Japan.,Graduate School of Frontier Biosciences, Osaka University, Japan
| | - Takeshi Noda
- Center for Frontier Oral Science, Graduate School of Dentistry, Osaka University, Japan.,Graduate School of Frontier Biosciences, Osaka University, Japan
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Tamura T, Morita E, Kawai S, Sasakabe T, Fukuda N, Sugimoto Y, Suma S, Mokuno J, Nakagawa H, Hishida A, Okada R, Naito M, Hamajima N, Wakai K. Significant Associations of Abdominal Obesity with LYPLAL1 Polymorphism (rs4846567) among a General Japanese Population: A Cross-Sectional Study. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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38
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Sasakabe T, Yin G, Naito M, Morita E, Kawai S, Okada R, Tamura T, Nakagawa H, Suma S, Fukuda N, Sugimoto Y, Wakai K, Hamajima N, Study Group JM. The Association of Alcohol Intake with Serum Lipid Profile and its Modification by ADH1B and ALDH2 Polymorphisms: J-MICC Study. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Suma S, Naito M, Wakai K, Sasakabe T, Hattori Y, Okada R, Kawai S, Hishida A, Morita E, Nakagawa H, Tamura T, Hamajima N. Effects ofIL6C-634G polymorphism on tooth loss and their interaction with smoking habits. Oral Dis 2015; 21:807-13. [DOI: 10.1111/odi.12352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/30/2015] [Accepted: 05/13/2015] [Indexed: 11/28/2022]
Affiliation(s)
- S Suma
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - M Naito
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - K Wakai
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - T Sasakabe
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Y Hattori
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - R Okada
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - S Kawai
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - A Hishida
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - E Morita
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - H Nakagawa
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
- Division of Epidemiology & Prevention; Aichi Cancer Center Research Institute; Nagoya Japan
| | - T Tamura
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - N Hamajima
- Department of Healthcare Administration; Nagoya University Graduate School of Medicine; Nagoya Japan
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Tsuchisaka A, Kaneko S, Imaoka K, Ota M, Kishimoto K, Tomaru U, Kasahara M, Ohata C, Furumura M, Takamori S, Morita E, Hashimoto T. Presence of autoimmune regulator and absence of desmoglein 1 in a thymoma in a patient with pemphigus foliaceus. Br J Dermatol 2015; 173:268-71. [PMID: 25523433 DOI: 10.1111/bjd.13617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A Tsuchisaka
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, 830-0011, Fukuoka, Japan
| | - S Kaneko
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - K Imaoka
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - M Ota
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - K Kishimoto
- Department of Respiratory Surgery, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - U Tomaru
- Department of Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - M Kasahara
- Department of Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - C Ohata
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, 830-0011, Fukuoka, Japan
| | - M Furumura
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, 830-0011, Fukuoka, Japan
| | - S Takamori
- Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - E Morita
- Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, 830-0011, Fukuoka, Japan
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Takahashi H, Chinuki Y, Tanaka A, Morita E. Laminin γ-1 and collagen α-1 (VI) chain are galactose-α-1,3-galactose-bound allergens in beef. Allergy 2014; 69:199-207. [PMID: 24180678 DOI: 10.1111/all.12302] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND Sensitization to the carbohydrate galactose-α-1,3-galactose (α-Gal) has been reported in patients with beef allergy. However, the proteins responsible for this allergy have not yet been identified. This study aimed to identify beef proteins that predominantly react with serum IgE in Japanese patients with beef allergy. METHODS Sera were collected from 29 patients with beef allergy who had allergic reaction(s) such as urticaria, abdominal pain, vomiting, and anaphylactic shock after ingestion of beef and pork; the sera tested positive for IgE against beef and pork. IgE-binding proteins were detected by immunoblotting sera from the patients and identified using a combination of two-dimensional gel electrophoresis and peptide mass fingerprinting techniques. The involvement of carbohydrate in the binding of IgE to allergens was examined by periodate treatment and an inhibition assay with cetuximab by immunoblotting. Specific IgE binding to cetuximab was measured using the CAP-fluorescent enzyme immunoassay. RESULTS Two IgE-binding proteins (240 kDa and 140 kDa) were detected in beef extract and identified as laminin γ-1 and the collagen α-1 (VI) chain from Bos taurus, respectively. Periodate treatment or the inhibition assay resulted in the loss of IgE binding to these proteins. Immunoblotting with anti-α-Gal antibody revealed the presence of α-Gal on the 240- and 140-kDa beef proteins. The amount of IgE bound to cetuximab was significantly correlated with that to beef in the patients with beef allergy. CONCLUSION The carbohydrate moiety (α-Gal) on laminin γ-1 and collagen α-1 (VI) chain are possibly common IgE-reactive proteins in the Japanese patients with beef allergy.
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Affiliation(s)
- H. Takahashi
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
| | - Y. Chinuki
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
| | - A. Tanaka
- Thermo Fisher Scientific K.K.; Tokyo Japan
| | - E. Morita
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane Japan
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42
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Suzuki H, Tabata K, Morita E, Kawasaki M, Kato R, Dobson RCJ, Yoshimori T, Wakatsuki S. Structural basis of the autophagy-related LC3/Atg13 LIR complex: recognition and interaction mechanism. Structure 2013; 22:47-58. [PMID: 24290141 DOI: 10.1016/j.str.2013.09.023] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 09/01/2013] [Accepted: 09/24/2013] [Indexed: 12/11/2022]
Abstract
Autophagy is a bulk degradation pathway that removes cytosolic materials to maintain cellular homeostasis. The autophagy-related gene 13 (Atg13) and microtubule associate protein 1 light chain 3 (LC3) proteins are required for autophagosome formation. We demonstrate that each of the human LC3 isoforms (LC3A, LC3B, and LC3C) interacts with Atg13 via the LC3 interacting region (LIR) of Atg13. Using X-ray crystallography, we solved the macromolecular structures of LC3A and LC3C, along with the complex structures of the LC3 isoforms with the Atg13 LIR. Together, our structural and binding analyses reveal that the side-chain of Lys49 of LC3 acts as a gatekeeper to regulate binding of the LIR. We verified this observation by mutation of Lys49 in LC3A, which significantly reduces LC3A positive puncta formation in cultured cells. Our results suggest that specific affinity of the LC3 isoforms to the Atg13 LIR is required for proper autophagosome formation.
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Affiliation(s)
- Hironori Suzuki
- Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch 8020, New Zealand; Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan.
| | - Keisuke Tabata
- International Research Center for Infectious Diseases, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Eiji Morita
- International Research Center for Infectious Diseases, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Masato Kawasaki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Ryuichi Kato
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Renwick C J Dobson
- Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch 8020, New Zealand; Department of Biochemistry and Molecular Biology, Bio21 Institute, University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Tamotsu Yoshimori
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Soichi Wakatsuki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan; Photon Science, SLAC National Accelerator Laboratory, Menlo Park, CA 94025-7015, USA; Department of Structural Biology, School of Medicine, Stanford University, Stanford, CA 94305-5126, USA
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43
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Fujita N, Morita E, Itoh T, Tanaka A, Nakaoka M, Osada Y, Umemoto T, Saitoh T, Nakatogawa H, Kobayashi S, Haraguchi T, Guan JL, Iwai K, Tokunaga F, Saito K, Ishibashi K, Akira S, Fukuda M, Noda T, Yoshimori T. Recruitment of the autophagic machinery to endosomes during infection is mediated by ubiquitin. ACTA ACUST UNITED AC 2013; 203:115-28. [PMID: 24100292 PMCID: PMC3798248 DOI: 10.1083/jcb.201304188] [Citation(s) in RCA: 213] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
After bacterial invasion, ubiquitin is conjugated to host endosomal proteins and recognized by the autophagic machinery independent of LC3. Although ubiquitin is thought to be important for the autophagic sequestration of invading bacteria (also called xenophagy), its precise role remains largely enigmatic. Here we determined how ubiquitin is involved in this process. After invasion, ubiquitin is conjugated to host cellular proteins in endosomes that contain Salmonella or transfection reagent–coated latex (polystyrene) beads, which mimic invading bacteria. Ubiquitin is recognized by the autophagic machinery independently of the LC3–ubiquitin interaction through adaptor proteins, including a direct interaction between ubiquitin and Atg16L1. To ensure that invading pathogens are captured and degraded, Atg16L1 targeting is secured by two backup systems that anchor Atg16L1 to ubiquitin-decorated endosomes. Thus, we reveal that ubiquitin is a pivotal molecule that connects bacteria-containing endosomes with the autophagic machinery upstream of LC3.
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Affiliation(s)
- Naonobu Fujita
- Department of Genetics, Graduate School of Medicine, 2 Laboratory of Intracellular Membrane Dynamics, Graduate school of Frontier Biosciences, 3 Department of Molecular Virology, Research Institute for Microbial Diseases, 4 Department of Host Defense, WPI Immunology Frontier Research Center, 5 Department of Host Defense, Research Institute for Microbial Disease, and 6 Core Instrumentation Facility, Research Institute for Microbial Disease, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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44
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Nilsson N, Sjolander S, Morita E, Berthold M, Hedlin G, Borres M, Nilsson C. Diagnostic value of IgE antibodies to ω-5 gliadin, HMW-glutenin and gliadins in wheat challenged children. Clin Transl Allergy 2013. [PMCID: PMC3723583 DOI: 10.1186/2045-7022-3-s3-p116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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45
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Tripathi LP, Kambara H, Chen YA, Nishimura Y, Moriishi K, Okamoto T, Morita E, Abe T, Mori Y, Matsuura Y, Mizuguchi K. Understanding the Biological Context of NS5A–Host Interactions in HCV Infection: A Network-Based Approach. J Proteome Res 2013; 12:2537-51. [DOI: 10.1021/pr3011217] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lokesh P. Tripathi
- National Institute of Biomedical Innovation, 7-6-8 Saito Asagi, Ibaraki,
Osaka, 567-0085, Japan
| | - Hiroto Kambara
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Yi-An Chen
- National Institute of Biomedical Innovation, 7-6-8 Saito Asagi, Ibaraki,
Osaka, 567-0085, Japan
| | - Yorihiro Nishimura
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Kohji Moriishi
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Toru Okamoto
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Eiji Morita
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Takayuki Abe
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Yoshio Mori
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Yoshiharu Matsuura
- Department of Molecular Virology,
Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Kenji Mizuguchi
- National Institute of Biomedical Innovation, 7-6-8 Saito Asagi, Ibaraki,
Osaka, 567-0085, Japan
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-Oka, Suita, Osaka, 565-0871,
Japan
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46
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Sano Y, Masuda K, Tamagawa-Mineoka R, Matsunaka H, Murakami Y, Yamashita R, Morita E, Katoh N. Thymic stromal lymphopoietin expression is increased in the horny layer of patients with atopic dermatitis. Clin Exp Immunol 2013; 171:330-7. [PMID: 23379440 DOI: 10.1111/cei.12021] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2012] [Indexed: 12/20/2022] Open
Abstract
Thymic stromal lymphopoietin (TSLP) is known for its capacity to induce CD11c(+) myeloid dendritic cells to promote T helper type 2 (Th2)-skewed inflammatory responses. Although increased expression of TSLP was reported in the lesional skin of limited numbers of patients with atopic dermatitis (AD), the relationships between the degree of TSLP expression in the skin and the severity of AD, epidermal barrier function and eruption type remain to be elucidated. The aim of this study was to examine the relationships between the degree of TSLP expression in the skin and the severity of AD, eruption type and epidermal barrier function using a non-invasive method in a sizeable group of the patients. Stratum corneum tissue was obtained from AD patients by tape stripping, and the stratum corneum TSLP (scTSLP) expression level was evaluated using a TSLP-specific antibody followed by image analysis. The correlations between the scTSLP intensity and the severity scoring of AD (SCORAD) index and epidermal barrier function, such as stratum corneum hydration and transepidermal water loss (TEWL), were analysed. The changes in the scTSLP level induced by the application of moisturizer were also examined. The scTSLP expression level was increased in AD patients compared with healthy subjects and was correlated with SCORAD, especially with the dry skin score, and stratum corneum hydration. Moisturizer application resulted in reduced scTSLP levels. The scTSLP level can be used as a biomarker of AD severity and particularly epidermal barrier status.
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Affiliation(s)
- Y Sano
- Department of Dermatology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
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47
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Morita E, Arii J, Christensen D, Votteler J, Sundquist WI. Attenuated protein expression vectors for use in siRNA rescue experiments. Biotechniques 2012; 0:1-5. [PMID: 22877307 DOI: 10.2144/000113909] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 07/13/2012] [Indexed: 11/23/2022] Open
Abstract
Transient transfection of small interfering RNA (siRNA) provides a powerful approach for studying cellular protein functions, particularly when the target protein can be re-expressed from an exogenous siRNA-resistant construct in order to rescue the knockdown phenotype, confirm siRNA target specificity, and support mutational analyses. Rescue experiments often fail, however, when siRNA-resistant constructs are expressed at suboptimal levels. Here, we describe an ensemble of mammalian protein expression vectors with CMV promoters of differing strengths. Using CHMP2A rescue of HIV-1 budding, we show that these vectors can combine high-transfection efficiencies with tunable protein expression levels to optimize the rescue of cellular phenotypes induced by siRNA transfection.
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Affiliation(s)
- Eiji Morita
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
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48
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Takahashi H, Matsuo H, Chinuki Y, Kohno K, Tanaka A, Maruyama N, Morita E. Recombinant high molecular weight-glutenin subunit-specific IgE detection is useful in identifying wheat-dependent exercise-induced anaphylaxis complementary to recombinant omega-5 gliadin-specific IgE test. Clin Exp Allergy 2012; 42:1293-8. [DOI: 10.1111/j.1365-2222.2012.04039.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H. Takahashi
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane; Japan
| | - H. Matsuo
- Department of Pathophysiology and Therapeutics; Hiroshima University Graduate School of Biomedical Sciences; Hiroshima; Japan
| | - Y. Chinuki
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane; Japan
| | - K. Kohno
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane; Japan
| | - A. Tanaka
- Scientific Affairs; Phadia K.K; Tokyo; Japan
| | - N. Maruyama
- Research Institute for Food Science; Kyoto University; Uji, Kyoto; Japan
| | - E. Morita
- Department of Dermatology; Shimane University Faculty of Medicine; Shimane; Japan
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49
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Tripathi LP, Kambara H, Moriishi K, Morita E, Abe T, Mori Y, Chen YA, Matsuura Y, Mizuguchi K. Proteomic analysis of hepatitis C virus (HCV) core protein transfection and host regulator PA28γ knockout in HCV pathogenesis: a network-based study. J Proteome Res 2012; 11:3664-79. [PMID: 22646850 DOI: 10.1021/pr300121a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus (HCV) causes chronic liver disease worldwide. HCV Core protein (Core) forms the viral capsid and is crucial for HCV pathogenesis and HCV-induced hepatocellular carcinoma, through its interaction with the host factor proteasome activator PA28γ. Here, using BD-PowerBlot high-throughput Western array, we attempt to further investigate HCV pathogenesis by comparing the protein levels in liver samples from Core-transgenic mice with or without the knockout of PA28γ expression (abbreviated PA28γ(-/-)CoreTG and CoreTG, respectively) against the wild-type (WT). The differentially expressed proteins integrated into the human interactome were shown to participate in compact and well-connected cellular networks. Functional analysis of the interaction networks using a newly developed data warehouse system highlighted cellular pathways associated with vesicular transport, immune system, cellular adhesion, and cell growth and death among others that were prominently influenced by Core and PA28γ in HCV infection. Follow-up assays with in vitro HCV cell culture systems validated VTI1A, a vesicular transport associated factor, which was upregulated in CoreTG but not in PA28γ(-/-)CoreTG, as a novel regulator of HCV release but not replication. Our analysis provided novel insights into the Core-PA28γ interplay in HCV pathogenesis and identified potential targets for better anti-HCV therapy and potentially novel biomarkers of HCV infection.
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Affiliation(s)
- Lokesh P Tripathi
- National Institute of Biomedical Innovation, 7-6-8 Saito Asagi, Ibaraki, Osaka, 567-0085, Japan
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50
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Abstract
Autophagy is a stress response that is upregulated in response to signals such as starvation, growth factor deprivation, endoplasmic reticulum stress, and pathogen infection. Defects in this pathway are the underlying cause of a number of diseases, including metabolic aberrations, infectious diseases, and cancer, which are closely related to hepatic disorders. To date, more than 30 human ATG (autophagy) genes have been reported to regulate autophagosome formation. In this review, we summarize the current understanding of how ATG proteins behave during autophagosome formation in both non-selective and selective autophagy.
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Affiliation(s)
- Eiji Morita
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
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