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Tamura T, Yamamoto H, Ogino S, Morioka Y, Tsujino S, Suzuki R, Hiono T, Suzuki S, Isoda N, Sakoda Y, Fukuhara T. A rapid and versatile reverse genetics approach for generating recombinant positive-strand RNA viruses that use IRES-mediated translation. J Virol 2024; 98:e0163823. [PMID: 38353536 PMCID: PMC10949505 DOI: 10.1128/jvi.01638-23] [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: 10/19/2023] [Accepted: 01/24/2024] [Indexed: 03/20/2024] Open
Abstract
Reverse genetics systems have played a central role in developing recombinant viruses for a wide spectrum of virus research. The circular polymerase extension reaction (CPER) method has been applied to studying positive-strand RNA viruses, allowing researchers to bypass molecular cloning of viral cDNA clones and thus leading to the rapid generation of recombinant viruses. However, thus far, the CPER protocol has only been established using cap-dependent RNA viruses. Here, we demonstrate that a modified version of the CPER method can be successfully applied to positive-strand RNA viruses that use cap-independent, internal ribosomal entry site (IRES)-mediated translation. As a proof-of-concept, we employed mammalian viruses with different types (classes I, II, and III) of IRES to optimize the CPER method. Using the hepatitis C virus (HCV, class III), we found that inclusion in the CPER assembly of an RNA polymerase I promoter and terminator, instead of those from polymerase II, allowed greater viral production. This approach was also successful in generating recombinant bovine viral diarrhea virus (class III) following transfection of MDBK/293T co-cultures to overcome low transfection efficiency. In addition, we successfully generated the recombinant viruses from clinical specimens. Our modified CPER could be used for producing hepatitis A virus (HAV, type I) as well as de novo generation of encephalomyocarditis virus (type II). Finally, we generated recombinant HCV and HAV reporter viruses that exhibited replication comparable to that of the wild-type parental viruses. The recombinant HAV reporter virus helped evaluate antivirals. Taking the findings together, this study offers methodological advances in virology. IMPORTANCE The lack of versatility of reverse genetics systems remains a bottleneck in viral research. Especially when (re-)emerging viruses reach pandemic levels, rapid characterization and establishment of effective countermeasures using recombinant viruses are beneficial in disease control. Indeed, numerous studies have attempted to establish and improve the methods. The circular polymerase extension reaction (CPER) method has overcome major obstacles in generating recombinant viruses. However, this method has not yet been examined for positive-strand RNA viruses that use cap-independent, internal ribosome entry site-mediated translation. Here, we engineered a suitable gene cassette to expand the CPER method for all positive-strand RNA viruses. Furthermore, we overcame the difficulty of generating recombinant viruses because of low transfection efficiency. Using this modified method, we also successfully generated reporter viruses and recombinant viruses from a field sample without virus isolation. Taking these findings together, our adapted methodology is an innovative technology that could help advance virologic research.
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Affiliation(s)
- Tomokazu Tamura
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
| | - Hirotaka Yamamoto
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Saho Ogino
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yuhei Morioka
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Shuhei Tsujino
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Rigel Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Takahiro Hiono
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Saori Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Yoshihiro Sakoda
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- AMED-CREST, Japan Agency for Medical Research and Development (AMED), Tokyo, Japan
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Takihira S, Yamada D, Osone T, Takao T, Sakaguchi M, Hakozaki M, Itano T, Nakata E, Fujiwara T, Kunisada T, Ozaki T, Takarada T. PRRX1-TOP2A interaction is a malignancy-promoting factor in human malignant peripheral nerve sheath tumours. Br J Cancer 2024:10.1038/s41416-024-02632-8. [PMID: 38448751 DOI: 10.1038/s41416-024-02632-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Paired related-homeobox 1 (PRRX1) is a transcription factor in the regulation of developmental morphogenetic processes. There is growing evidence that PRRX1 is highly expressed in certain cancers and is critically involved in human survival prognosis. However, the molecular mechanism of PRRX1 in cancer malignancy remains to be elucidated. METHODS PRRX1 expression in human Malignant peripheral nerve sheath tumours (MPNSTs) samples was detected immunohistochemically to evaluate survival prognosis. MPNST models with PRRX1 gene knockdown or overexpression were constructed in vitro and the phenotype of MPNST cells was evaluated. Bioinformatics analysis combined with co-immunoprecipitation, mass spectrometry, RNA-seq and structural prediction were used to identify proteins interacting with PRRX1. RESULTS High expression of PRRX1 was associated with a poor prognosis for MPNST. PRRX1 knockdown suppressed the tumorigenic potential. PRRX1 overexpressed in MPNSTs directly interacts with topoisomerase 2 A (TOP2A) to cooperatively promote epithelial-mesenchymal transition and increase expression of tumour malignancy-related gene sets including mTORC1, KRAS and SRC signalling pathways. Etoposide, a TOP2A inhibitor used in the treatment of MPNST, may exhibit one of its anticancer effects by inhibiting the PRRX1-TOP2A interaction. CONCLUSION Targeting the PRRX1-TOP2A interaction in malignant tumours with high PRRX1 expression might provide a novel tumour-selective therapeutic strategy.
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Affiliation(s)
- Shota Takihira
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Daisuke Yamada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Tatsunori Osone
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Tomoka Takao
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Michiyuki Hakozaki
- Department of Orthopedic Surgery, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan
| | - Takuto Itano
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Eiji Nakata
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Tomohiro Fujiwara
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Toshiyuki Kunisada
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Toshifumi Ozaki
- Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8558, Japan.
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Hirotsu Y, Nagakubo Y, Maejima M, Shibusawa M, Hosaka K, Sueki H, Mochizuki H, Omata M. Changes in Viral Dynamics Following the Legal Relaxation of COVID-19 Mitigation Measures in Japan From Children to Adults: A Single Center Study, 2020-2023. Influenza Other Respir Viruses 2024; 18:e13278. [PMID: 38513611 PMCID: PMC10957242 DOI: 10.1111/irv.13278] [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: 11/12/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/23/2024] Open
Abstract
INTRODUCTION Respiratory infections are an ongoing global health challenge. The COVID-19 pandemic triggered global nonpharmacological measures that reshaped public health. In Japan, the shift from legal to individual discretion in pandemic management started on May 8, 2023. However, it still unknown how the relaxation of measures affects respiratory pathogens across age groups. METHODS We collected 16,946 samples from 13,526 patients between February 2020 and September 2023, analyzing the circulating respiratory pathogen dynamics using FilmArray respiratory panel. RESULTS Our analysis revealed significant increases in the positivity rates of respiratory pathogens across multiple age groups after relaxation. The pathogens including adenovirus, Bordetella pertussis, parainfluenza 2 and parainfluenza 4 showed increased positivity predominantly in children aged under 10 years. Conversely, some pathogens including human metapneumovirus, rhinovirus/enterovirus, and respiratory virus (RSV) increased in broad range of age groups. SARS-CoV-2 positivity rates decreased in children under 10 years but increased in those aged over 60 years. DISCUSSION Age-stratified analysis reveals a dynamic pattern of circulating pathogen in each age group after relaxation measures. This study provides essential epidemiologic data that can guide strategies to protect different age groups and effectively respond to respiratory infections in post-COVID-19 era.
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Affiliation(s)
- Yosuke Hirotsu
- Genome Analysis CenterYamanashi Central HospitalKofuYamanashiJapan
| | - Yuki Nagakubo
- Genome Analysis CenterYamanashi Central HospitalKofuYamanashiJapan
- Division of Microbiology in Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
- Division of Genetics and Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
| | - Makoto Maejima
- Division of Microbiology in Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
| | - Masahiro Shibusawa
- Division of Microbiology in Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
| | - Kazuhiro Hosaka
- Division of Microbiology in Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
| | - Hitomi Sueki
- Division of Microbiology in Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
| | - Hitoshi Mochizuki
- Genome Analysis CenterYamanashi Central HospitalKofuYamanashiJapan
- Central Clinical LaboratoryYamanashi Central HospitalKofuYamanashiJapan
- Department of GastroenterologyYamanashi Central HospitalKofuYamanashiJapan
| | - Masao Omata
- Department of GastroenterologyYamanashi Central HospitalKofuYamanashiJapan
- The University of TokyoTokyoJapan
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Kawada T, Matsushita H, Yokota S, Yoshida Y, Fukumitsu M, Alexander J, Saku K. Short-term dynamic characteristics of diuresis during exogenous pressure perturbations with and without arterial baroreflex control. Am J Physiol Regul Integr Comp Physiol 2024; 326:R230-R241. [PMID: 38223938 DOI: 10.1152/ajpregu.00229.2023] [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: 10/04/2023] [Revised: 11/16/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
Although body fluid volume control by the kidneys may be classified as a long-term arterial pressure (AP) control system, it does not necessarily follow that the urine flow (UF) response to changes in AP is slow. We quantified the dynamic characteristics of the UF response to short-term AP changes by changing mean AP between 60 mmHg and 100 mmHg every 10 s according to a binary white noise sequence in anesthetized rats (n = 8 animals). In a baro-on trial (the carotid sinus baroreflex was enabled), the UF response represented the combined synergistic effects of pressure diuresis (PD) and neurally mediated antidiuresis (NMA). In a baro-fix trial (the carotid sinus pressure was fixed at 100 mmHg), the UF response mainly reflected the effect of PD. The UF step response was quantified using the sum of two exponential decay functions. The fast and slow components had time constants of 6.5 ± 3.6 s and 102 ± 85 s (means ± SD), respectively, in the baro-on trial. Although the gain of the fast component did not differ between the two trials (0.49 ± 0.21 vs. 0.66 ± 0.22 µL·min-1·kg-1·mmHg-1), the gain of the slow component was greater in the baro-on than in the baro-fix trial (0.51 ± 0.14 vs. 0.09 ± 0.39 µL·min-1·kg-1·mmHg-1, P = 0.023). The magnitude of NMA relative to PD was calculated to be 32.2 ± 29.8%. In conclusion, NMA contributed to the slow component, and its magnitude was approximately one-third of that of the effect of PD.NEW & NOTEWORTHY We quantified short-term dynamic characteristics of the urine flow (UF) response to arterial pressure (AP) changes using white noise analysis. The UF step response approximated the sum of two exponential decay functions with time constants of ∼6.5 s and 102 s. The neurally mediated antidiuretic (NMA) effect contributed to the slow component of the UF step response, with the magnitude of approximately one-third of that of the pressure diuresis (PD) effect.
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Affiliation(s)
- Toru Kawada
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Hiroki Matsushita
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Shohei Yokota
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Yuki Yoshida
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Masafumi Fukumitsu
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Joe Alexander
- Medical and Health Informatics, NTT Research, Inc., Sunnyvale, California, United States
| | - Keita Saku
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
- Bio Digital Twin Center, National Cerebral and Cardiovascular Center, Osaka, Japan
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5
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Yamaguchi S, Minamide N, Imai H, Ikeda T, Watanabe M, Imanaka-Yoshida K, Maruyama K. The development of early human lymphatic vessels as characterized by lymphatic endothelial markers. EMBO J 2024; 43:868-885. [PMID: 38351385 PMCID: PMC10907744 DOI: 10.1038/s44318-024-00045-0] [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: 11/09/2023] [Revised: 01/02/2024] [Accepted: 01/08/2024] [Indexed: 03/03/2024] Open
Abstract
Lymphatic vessel development studies in mice and zebrafish models have demonstrated that lymphatic endothelial cells (LECs) predominantly differentiate from venous endothelial cells via the expression of the transcription factor Prox1. However, LECs can also be generated from undifferentiated mesoderm, suggesting potential diversity in their precursor cell origins depending on the organ or anatomical location. Despite these advances, recapitulating human lymphatic malformations in animal models has been difficult, and considering lymphatic vasculature function varies widely between species, analysis of development directly in humans is needed. Here, we examined early lymphatic development in humans by analyzing the histology of 31 embryos and three 9-week-old fetuses. We found that human embryonic cardinal veins, which converged to form initial lymph sacs, produce Prox1-expressing LECs. Furthermore, we describe the lymphatic vessel development in various organs and observe organ-specific differences. These characterizations of the early development of human lymphatic vessels should help to better understand the evolution and phylogenetic relationships of lymphatic systems, and their roles in human disease.
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Affiliation(s)
- Shoichiro Yamaguchi
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Natsuki Minamide
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Hiroshi Imai
- Pathology Division, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Tomoaki Ikeda
- Department of Obstetrics and Gynecology, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Masatoshi Watanabe
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Kyoko Imanaka-Yoshida
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Kazuaki Maruyama
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan.
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Tamura T, Irie T, Deguchi S, Yajima H, Tsuda M, Nasser H, Mizuma K, Plianchaisuk A, Suzuki S, Uriu K, Begum MM, Shimizu R, Jonathan M, Suzuki R, Kondo T, Ito H, Kamiyama A, Yoshimatsu K, Shofa M, Hashimoto R, Anraku Y, Kimura KT, Kita S, Sasaki J, Sasaki-Tabata K, Maenaka K, Nao N, Wang L, Oda Y, Ikeda T, Saito A, Matsuno K, Ito J, Tanaka S, Sato K, Hashiguchi T, Takayama K, Fukuhara T. Virological characteristics of the SARS-CoV-2 Omicron XBB.1.5 variant. Nat Commun 2024; 15:1176. [PMID: 38332154 PMCID: PMC10853506 DOI: 10.1038/s41467-024-45274-3] [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: 08/22/2023] [Accepted: 01/19/2024] [Indexed: 02/10/2024] Open
Abstract
Circulation of SARS-CoV-2 Omicron XBB has resulted in the emergence of XBB.1.5, a new Variant of Interest. Our phylogenetic analysis suggests that XBB.1.5 evolved from XBB.1 by acquiring the S486P spike (S) mutation, subsequent to the acquisition of a nonsense mutation in ORF8. Neutralization assays showed similar abilities of immune escape between XBB.1.5 and XBB.1. We determine the structural basis for the interaction between human ACE2 and the S protein of XBB.1.5, showing similar overall structures between the S proteins of XBB.1 and XBB.1.5. We provide the intrinsic pathogenicity of XBB.1 and XBB.1.5 in hamsters. Importantly, we find that the ORF8 nonsense mutation of XBB.1.5 resulted in impairment of MHC suppression. In vivo experiments using recombinant viruses reveal that the XBB.1.5 mutations are involved with reduced virulence of XBB.1.5. Together, our study identifies the two viral functions defined the difference between XBB.1 and XBB.1.5.
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Affiliation(s)
- Tomokazu Tamura
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- School of Medicine, Hokkaido University, Sapporo, Japan
- Institute for the Advancement of Higher Education, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
| | - Takashi Irie
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Sayaka Deguchi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Hisano Yajima
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Masumi Tsuda
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Hesham Nasser
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Department of Clinical Pathology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Keita Mizuma
- Division of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Arnon Plianchaisuk
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Saori Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- School of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Keiya Uriu
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mst Monira Begum
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Ryo Shimizu
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Michael Jonathan
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Rigel Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- School of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Takashi Kondo
- School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hayato Ito
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Akifumi Kamiyama
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | | | - Maya Shofa
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Rina Hashimoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Yuki Anraku
- Laboratory of Biomolecular Science and Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Kanako Terakado Kimura
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Shunsuke Kita
- Laboratory of Biomolecular Science and Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Jiei Sasaki
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Kaori Sasaki-Tabata
- Department of Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Katsumi Maenaka
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Biomolecular Science and Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
- Division of Pathogen Structure, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo, Japan
| | - Naganori Nao
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Division of International Research Promotion, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Lei Wang
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Yoshitaka Oda
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Terumasa Ikeda
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Akatsuki Saito
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Keita Matsuno
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Division of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Jumpei Ito
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan.
| | - Kei Sato
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
- Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
- International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan.
- CREST, Japan Science and Technology Agency, Kawaguchi, Japan.
- International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
- Collaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
| | - Takao Hashiguchi
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan.
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan.
- Kyoto University Immunomonitoring Center, Kyoto University, Kyoto, Japan.
| | - Kazuo Takayama
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
- AMED-CREST, Japan Agency for Medical Research and Development (AMED), Tokyo, Japan.
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
- School of Medicine, Hokkaido University, Sapporo, Japan.
- Institute for the Advancement of Higher Education, Hokkaido University, Sapporo, Japan.
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan.
- One Health Research Center, Hokkaido University, Sapporo, Japan.
- Kyoto University Immunomonitoring Center, Kyoto University, Kyoto, Japan.
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan.
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7
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Kawada T, Miyamoto T, Fukumitsu M, Saku K. Input-size dependence of the baroreflex neural arc transfer characteristics during Gaussian white noise inputs. Am J Physiol Regul Integr Comp Physiol 2024; 326:R121-R133. [PMID: 38047314 DOI: 10.1152/ajpregu.00199.2023] [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: 08/16/2023] [Revised: 10/23/2023] [Accepted: 11/26/2023] [Indexed: 12/05/2023]
Abstract
Although Gaussian white noise (GWN) inputs offer a theoretical framework for identifying higher-order nonlinearity, an actual application to the data of the neural arc of the carotid sinus baroreflex did not succeed in fully predicting the well-known sigmoidal nonlinearity. In the present study, we assumed that the neural arc can be approximated by a cascade of a linear dynamic (LD) component and a nonlinear static (NS) component. We analyzed the data obtained using GWN inputs with a mean of 120 mmHg and standard deviations (SDs) of 10, 20, and 30 mmHg for 15 min each in anesthetized rats (n = 7). We first estimated the linear transfer function from carotid sinus pressure to sympathetic nerve activity (SNA) and then plotted the measured SNA against the linearly predicted SNA. The predicted and measured data pairs exhibited an inverse sigmoidal distribution when grouped into 10 bins based on the size of the linearly predicted SNA. The sigmoidal nonlinearity estimated via the LD-NS model showed a midpoint pressure (104.1 ± 4.4 mmHg for SD of 30 mmHg) lower than that estimated by a conventional stepwise input (135.8 ± 3.9 mmHg, P < 0.001). This suggests that the NS component is more likely to reflect the nonlinearity observed during pulsatile inputs that are physiological to baroreceptors. Furthermore, the LD-NS model yielded higher R2 values compared with the linear model and the previously suggested second-order Uryson model in the testing dataset.NEW & NOTEWORTHY We examined the input-size dependence of the baroreflex neural arc transfer characteristics during Gaussian white noise inputs. A linear dynamic-static nonlinear model yielded higher R2 values compared with a linear model and captured the well-known sigmoidal nonlinearity of the neural arc, indicating that the nonlinear dynamics contributed to determining sympathetic nerve activity. Ignoring such nonlinear dynamics might reduce our ability to explain underlying physiology and significantly limit the interpretation of experimental data.
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Affiliation(s)
- Toru Kawada
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Tadayoshi Miyamoto
- Department of Sport and Health Sciences, Faculty of Sport and Health Sciences, Osaka Sangyo University, Osaka, Japan
| | - Masafumi Fukumitsu
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Keita Saku
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Osaka, Japan
- Bio Digital Twin Center, National Cerebral and Cardiovascular Center, Osaka, Japan
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8
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Hirotsu Y, Nakagomi T, Nagakubo Y, Goto T, Omata M. Simulation analysis of EGFR mutation detection: Oncomine Dx target test and AmoyDx panel impact on lung cancer treatment decisions. Sci Rep 2024; 14:1594. [PMID: 38238401 PMCID: PMC10796947 DOI: 10.1038/s41598-024-52006-6] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/12/2024] [Indexed: 01/22/2024] Open
Abstract
Lung cancer is a leading cause of cancer-related deaths worldwide. Epidermal growth factor receptor (EGFR) driver mutations are crucial for treatment decisions for patients with non-small cell lung cancer (NSCLC). This study aimed to assess the differences in EGFR mutation detection between two companion diagnostic (CDx) tests-the Oncomine Dx Target Test (ODxTT) and the AmoyDx Pan Lung Cancer PCR Panel-and their impact on treatment applicability. To this end, we used an in-house targeted sequencing dataset of 282 samples from 127 EGFR-mutated NSCLC patients to simulate the concordance between the EGFR variants targeted by the ODxTT and AmoyDx panel, the oncogenicity of the variants, and their therapeutic potential. Of the 216 EGFR mutations identified by the in-house panel, 51% were detectable by both CDx tests, 3% were specific to ODxTT, and 46% were not targeted by either test. Most non-targeted mutations did not have oncogenicity and were located outside exons 18-21. Notably, 95% of the mutations detectable by both tests had potential oncogenicity. Furthermore, among the 96 patients harboring actionable EGFR mutations, 97% had mutations detectable by both CDx tests and 1% by ODxTT, while 2% had mutations not covered by either test. These findings suggest that while both CDx tests are effective in detecting almost all actionable EGFR mutations, ODxTT provides slightly broader coverage. These results emphasize the importance of selecting appropriate CDx tests to inform treatment decisions for EGFR-positive NSCLC patients.
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Affiliation(s)
- Yosuke Hirotsu
- Genome Analysis Center, Yamanashi Central Hospital, 1-1-1 Fujimi, Kofu, Yamanashi, 400-8506, Japan.
| | - Takahiro Nakagomi
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, 1-1-1 Fujimi, Kofu, Yamanashi, Japan
| | - Yuki Nagakubo
- Division of Genetics and Clinical Laboratory, Yamanashi Central Hospital, 1-1-1 Fujimi, Kofu, Yamanashi, Japan
| | - Taichiro Goto
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, 1-1-1 Fujimi, Kofu, Yamanashi, Japan
| | - Masao Omata
- Department of Gastroenterology, Yamanashi Central Hospital, 1-1-1 Fujimi, Kofu, Yamanashi, Japan
- The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
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9
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Horie M, Takagane K, Itoh G, Kuriyama S, Yanagihara K, Yashiro M, Umakoshi M, Goto A, Arita J, Tanaka M. Exosomes secreted by ST3GAL5 high cancer cells promote peritoneal dissemination by establishing a premetastatic microenvironment. Mol Oncol 2024; 18:21-43. [PMID: 37716915 PMCID: PMC10766203 DOI: 10.1002/1878-0261.13524] [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: 03/26/2023] [Revised: 08/29/2023] [Accepted: 09/15/2023] [Indexed: 09/18/2023] Open
Abstract
Peritoneal dissemination of cancer affects patient survival. The behavior of peritoneal mesothelial cells (PMCs) and immune cells influences the establishment of a microenvironment that promotes cancer cell metastasis in the peritoneum. Here, we investigated the roles of lactosylceramide alpha-2,3-sialyltransferase (ST3G5; also known as ST3GAL5 and GM3 synthase) in the exosome-mediated premetastatic niche in peritoneal milky spots (MSs). Exosomes secreted from ST3G5high cancer cells (ST3G5high -cExos) were found to contain high levels of hypoxia-inducible factor 1-alpha (HIF1α) and accumulated in MSs via uptake in macrophages (MΦs) owing to increased expression of sialic acid-binding Ig-like lectin 1 (CD169; also known as SIGLEC1). ST3G5high -cExos induced pro-inflammatory cytokines and glucose metabolic changes in MΦs, and the interaction of these MΦs with PMCs promoted mesothelial-mesenchymal transition (MMT) in PMCs, thereby generating αSMA+ myofibroblasts. ST3G5high -cExos also increased the expression of immune checkpoint molecules and T-cell exhaustion in MSs, which accelerated metastasis to the omentum. These events were prevented following ST3G5 depletion in cancer cells. Mechanistically, ST3G5high -cExos upregulated chemokines, including CC-chemokine ligand 5 (CCL5), in recipient MΦs and dendritic cells (DCs), which induced MMT and immunosuppression via activation of signal transducer and activator of transcription 3 (STAT3). Maraviroc, a C-C chemokine receptor type 5 (CCR5) antagonist, prevented ST3G5high -cExo-mediated MMT, T-cell suppression, and metastasis in MSs. Our results suggest ST3G5 as a suitable therapeutic target for preventing cExo-mediated peritoneal dissemination.
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Affiliation(s)
- Misato Horie
- Department of Molecular Medicine and BiochemistryAkita University Graduate School of MedicineJapan
- Department of Gastroenterological SurgeryAkita University Graduate School of MedicineJapan
| | - Kurara Takagane
- Department of Molecular Medicine and BiochemistryAkita University Graduate School of MedicineJapan
| | - Go Itoh
- Department of Molecular Medicine and BiochemistryAkita University Graduate School of MedicineJapan
| | - Sei Kuriyama
- Department of Molecular Medicine and BiochemistryAkita University Graduate School of MedicineJapan
| | - Kazuyoshi Yanagihara
- Division of Rare Cancer ResearchNational Cancer Center Research InstituteTokyoJapan
| | - Masakazu Yashiro
- Department of Molecular Oncology and TherapeuticsOsaka Metropolitan University Graduate School of MedicineJapan
| | - Michinobu Umakoshi
- Department of Cellular and Organ PathologyAkita University Graduate School of MedicineJapan
| | - Akiteru Goto
- Department of Cellular and Organ PathologyAkita University Graduate School of MedicineJapan
| | - Junichi Arita
- Department of Gastroenterological SurgeryAkita University Graduate School of MedicineJapan
| | - Masamitsu Tanaka
- Department of Molecular Medicine and BiochemistryAkita University Graduate School of MedicineJapan
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10
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Fuchs M, Jacob AS, Kaul H, Kobe C, Kuhnert G, Pabst T, Greil R, Bröckelmann PJ, Topp MS, Just M, Hertenstein B, Soekler M, Vogelhuber M, Zijlstra JM, Keller UB, Krause SW, Dührsen U, Meissner J, Viardot A, Eich HT, Baues C, Diehl V, Rosenwald A, Buehnen I, von Tresckow B, Dietlein M, Borchmann P, Engert A, Eichenauer DA. Follow-up of the GHSG HD16 trial of PET-guided treatment in early-stage favorable Hodgkin lymphoma. Leukemia 2024; 38:160-167. [PMID: 37845285 PMCID: PMC10776396 DOI: 10.1038/s41375-023-02064-y] [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: 08/02/2023] [Revised: 09/25/2023] [Accepted: 10/05/2023] [Indexed: 10/18/2023]
Abstract
The primary analysis of the GHSG HD16 trial indicated a significant loss of tumor control with PET-guided omission of radiotherapy (RT) in patients with early-stage favorable Hodgkin lymphoma (HL). This analysis reports long-term outcomes. Overall, 1150 patients aged 18-75 years with newly diagnosed early-stage favorable HL were randomized between standard combined-modality treatment (CMT) (2x ABVD followed by PET/CT [PET-2] and 20 Gy involved-field RT) and PET-2-guided treatment omitting RT in case of PET-2 negativity (Deauville score [DS] < 3). The study aimed at excluding inferiority of PET-2-guided treatment and assessing the prognostic impact of PET-2 in patients receiving CMT. At a median follow-up of 64 months, PET-2-negative patients had a 5-year progression-free survival (PFS) of 94.2% after CMT (n = 328) and 86.7% after ABVD alone (n = 300; HR = 2.05 [1.20-3.51]; p = 0.0072). 5-year OS was 98.3% and 98.8%, respectively (p = 0.14); 4/12 documented deaths were caused by second primary malignancies and only one by HL. Among patients assigned to CMT, 5-year PFS was better in PET-2-negative (n = 353; 94.0%) than in PET-2-positive patients (n = 340; 90.3%; p = 0.012). The difference was more pronounced when using DS4 as cut-off (DS 1-3: n = 571; 94.0% vs. DS ≥ 4: n = 122; 83.6%; p < 0.0001). Taken together, CMT should be considered standard treatment for early-stage favorable HL irrespective of the PET-2-result.
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Grants
- Sanofi-Genzyme, Takeda
- Employment/leadership position (University Hospital of Cologne, Head of the GHSG Trial Coordination Centre), honorarium (Celgene, BMS, Takeda, Affimed, Lukon, Janssen)
- Takeda Medical Research Foundation
- Bristol-Myers Squibb Company | Bristol-Myers Squibb Canada (BMS Canada)
- BeiGene, MSD Stemline
- Gilead Sciences (Gilead)
- Miltenyi Biotec
- Novartis
- Roche (F. Hoffmann-La Roche Ltd)
- Amgen (Amgen Inc.)
- Pfizer (Pfizer Inc.)
- Merck & Co., Inc. | Merck Sharp and Dohme (Merck Sharp & Dohme)
- AbbVie (AbbVie Inc.)
- AstraZeneca
- allogene, Cerus, incyte, IQVIA, Noscendo, Pentixapharm,
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Affiliation(s)
- Michael Fuchs
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Anne Sophie Jacob
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Helen Kaul
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Carsten Kobe
- Department of Nuclear Medicine, University of Cologne, Cologne, Germany
| | | | - Thomas Pabst
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Swiss Group for Clinical Cancer Research (SAKK), Bern, Switzerland
| | - Richard Greil
- IIIrd Medical Department, Paracelcus Medical University and Salzburg Cancer Research Institute, Salzburg, Austria
- Salzburg Cancer Research Institute and AGMT (Arbeitsgemeinschaft Medikamentöse Tumortherapie), Salzburg, Austria
| | - Paul J Bröckelmann
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Max S Topp
- Medizinische Klinik und Poliklinik II, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Marianne Just
- Dres. med. Just/Düwel/Riesenberg/Steinke/Schäfer, Studiengesellschaft, Bielefeld, Germany
| | - Bernd Hertenstein
- Department of Internal Medicine I, Klinikum Bremen Mitte, Bremen, Germany
| | - Martin Soekler
- Onkology, Spital Thun, Switzerland, formerly University of Tübingen, Tübingen, Germany
| | - Martin Vogelhuber
- Medizinische Klinik III, Universitätsklinik Regensburg, Regensburg, Germany
| | - Josée M Zijlstra
- Department of Hematology, Amsterdam UMC, Vrije Universiteit, Amsterdam, Netherlands
| | - Ulrich Bernd Keller
- Department of Internal Medicine III, Klinikum "Rechts der Isar", Munich, Germany
| | - Stefan W Krause
- Department of Internal Medicine 5, Haematology/Oncology, Uniklinikum Erlangen, Erlangen, Germany
| | - Ulrich Dührsen
- Department of Haematology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Andreas Viardot
- Department of Internal Medicine III, University Hospital Ulm, Ulm, Germany
| | - Hans-Theodor Eich
- Department of Radiotherapy, University Hospital of Muenster, Muenster, Germany
| | - Christian Baues
- Department of Radiotherapy, University of Cologne, Cologne, Germany
| | - Volker Diehl
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Andreas Rosenwald
- Institute of Pathology, Julius Maximilian University of Würzburg and Comprehensive Cancer Center Mainfranken, Würzburg, Germany
| | - Ina Buehnen
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Bastian von Tresckow
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
- Department of Haematology and Stem Cell Transplantation, West German Cancer Center and German Cancer Consortium (DKTK partner site Essen), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Markus Dietlein
- Department of Nuclear Medicine, University of Cologne, Cologne, Germany
| | - Peter Borchmann
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Andreas Engert
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany
| | - Dennis A Eichenauer
- German Hodgkin Study Group (GHSG), Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany.
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11
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Kanai Y, Onishi M, Yoshida Y, Kotaki T, Minami S, Nouda R, Yamasaki M, Enoki Y, Kobayashi T. Genetic engineering strategy for generating a stable dsRNA virus vector using a virus-like codon-modified transgene. J Virol 2023; 97:e0049223. [PMID: 37732784 PMCID: PMC10617491 DOI: 10.1128/jvi.00492-23] [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: 04/11/2023] [Accepted: 08/01/2023] [Indexed: 09/22/2023] Open
Abstract
IMPORTANCE The stabilities of transgenes in RNA virus vectors differ between the genes of interest, but the molecular mechanisms determining genetic stability remain unknown. This study demonstrated that the stability of a transgene was affected by the nucleotide composition, and altering the codon usage of transgenes to resemble that of the viral genome significantly increased transgene stability in double-stranded RNA virus vectors. The virus-like codon modification strategy enabled generation of stable rotavirus and mammalian orthoreovirus vectors, which could be developed as machinery for gene delivery to the intestines and/or respiratory organs. This technology has further potential to be expanded to other RNA viruses.
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Affiliation(s)
- Yuta Kanai
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Misa Onishi
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Yukino Yoshida
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Tomohiro Kotaki
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Shohei Minami
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Ryotaro Nouda
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Moeko Yamasaki
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Yasutaka Enoki
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Takeshi Kobayashi
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Center for Infectious Disease Education and Research, Osaka University, Suita, Osaka, Japan
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12
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Tomita A, Sasanuma H, Owa T, Nakazawa Y, Shimada M, Fukuoka T, Ogi T, Nakada S. Inducing multiple nicks promotes interhomolog homologous recombination to correct heterozygous mutations in somatic cells. Nat Commun 2023; 14:5607. [PMID: 37714828 PMCID: PMC10504326 DOI: 10.1038/s41467-023-41048-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 08/22/2023] [Indexed: 09/17/2023] Open
Abstract
CRISPR/Cas9-mediated gene editing has great potential utility for treating genetic diseases. However, its therapeutic applications are limited by unintended genomic alterations arising from DNA double-strand breaks and random integration of exogenous DNA. In this study, we propose NICER, a method for correcting heterozygous mutations that employs multiple nicks (MNs) induced by Cas9 nickase and a homologous chromosome as an endogenous repair template. Although a single nick near the mutation site rarely leads to successful gene correction, additional nicks on homologous chromosomes strongly enhance gene correction efficiency via interhomolog homologous recombination (IH-HR). This process partially depends on BRCA1 and BRCA2, suggesting the existence of several distinct pathways for MN-induced IH-HR. According to a genomic analysis, NICER rarely induces unintended genomic alterations. Furthermore, NICER restores the expression of disease-causing genes in cells derived from genetic diseases with compound heterozygous mutations. Overall, NICER provides a precise strategy for gene correction.
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Affiliation(s)
- Akiko Tomita
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hiroyuki Sasanuma
- Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, 156-0057, Japan
| | - Tomoo Owa
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuka Nakazawa
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, 464-8601, Japan
- Department of Human Genetics and Molecular Biology, Nagoya University Graduate School of Medicine, Nagoya, 464-8601, Japan
| | - Mayuko Shimada
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, 464-8601, Japan
- Department of Human Genetics and Molecular Biology, Nagoya University Graduate School of Medicine, Nagoya, 464-8601, Japan
| | - Takahiro Fukuoka
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, 464-8601, Japan
- Genomedia Inc., Tokyo, 113-0033, Japan
| | - Tomoo Ogi
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, 464-8601, Japan
- Department of Human Genetics and Molecular Biology, Nagoya University Graduate School of Medicine, Nagoya, 464-8601, Japan
| | - Shinichiro Nakada
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan.
- Institute for Advanced Co-Creation Studies, Osaka University, Suita, Osaka, 565-0871, Japan.
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13
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Abo H, Muraki A, Harusato A, Imura T, Suzuki M, Takahashi K, Denning TL, Kawashima H. N-acetylglucosamine-6-O sulfation on intestinal mucins prevents obesity and intestinal inflammation by regulating gut microbiota. JCI Insight 2023; 8:e165944. [PMID: 37463055 PMCID: PMC10543739 DOI: 10.1172/jci.insight.165944] [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: 10/07/2022] [Accepted: 07/11/2023] [Indexed: 08/23/2023] Open
Abstract
Intestinal mucins play an essential role in the defense against bacterial invasion and the maintenance of gut microbiota, which is instrumental in the regulation of host immune systems; hence, its dysregulation is a hallmark of metabolic disease and intestinal inflammation. However, the mechanism by which intestinal mucins control the gut microbiota as well as disease phenotypes remains nebulous. Herein, we report that N-acetylglucosamine (GlcNAc)-6-O sulfation of O-glycans on intestinal mucins performs a protective role against obesity and intestinal inflammation. Chst4-/- mice, lacking GlcNAc-6-O sulfation of the mucin O-glycans, showed significant weight gain and increased susceptibility to dextran sodium sulfate-induced colitis as well as colitis-associated cancer accompanied by significantly reduced immunoglobulin A (IgA) production caused by an impaired T follicular helper cell-mediated IgA response. Interestingly, the protective effects of GlcNAc-6-O sulfation against obesity and intestinal inflammation depend on the gut microbiota, evidenced by the modulation of the gut microbiota by cohousing or microbiota transplantation reversing disease phenotypes and IgA production. Collectively, our findings provide insight into the significance of host glycosylation, more specifically GlcNAc-6-O sulfation on intestinal mucins, in protecting against obesity and intestinal inflammation via regulation of the gut microbiota.
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Affiliation(s)
- Hirohito Abo
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Aoi Muraki
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | | | - Tetsuya Imura
- Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Maki Suzuki
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Kohta Takahashi
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Timothy L. Denning
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, USA
| | - Hiroto Kawashima
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
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14
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Nakatsuka Y, Murase K, Sonomura K, Tabara Y, Nagasaki T, Hamada S, Matsumoto T, Minami T, Kanai O, Takeyama H, Sunadome H, Takahashi N, Nakamoto I, Tanizawa K, Handa T, Sato TA, Komenami N, Wakamura T, Morita S, Takeuchi O, Nakayama T, Hirai T, Kamatani Y, Matsuda F, Chin K. Hyperfructosemia in sleep disordered breathing: metabolome analysis of Nagahama study. Sci Rep 2023; 13:12735. [PMID: 37543666 PMCID: PMC10404271 DOI: 10.1038/s41598-023-40002-1] [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: 07/06/2022] [Accepted: 08/03/2023] [Indexed: 08/07/2023] Open
Abstract
Sleep disordered breathing (SDB), mainly obstructive sleep apnea (OSA), constitutes a major health problem due to the large number of patients. Intermittent hypoxia caused by SDB induces alterations in metabolic function. Nevertheless, metabolites characteristic for SDB are largely unknown. In this study, we performed gas chromatography-mass spectrometry-based targeted metabolome analysis using data from The Nagahama Study (n = 6373). SDB-related metabolites were defined based on their variable importance score in orthogonal partial least squares discriminant analysis and fold changes in normalized peak-intensity levels between moderate-severe SDB patients and participants without SDB. We identified 20 metabolites as SDB-related, and interestingly, these metabolites were frequently included in pathways related to fructose. Multivariate analysis revealed that moderate-severe SDB was a significant factor for increased plasma fructose levels (β = 0.210, P = 0.006, generalized linear model) even after the adjustment of confounding factors. We further investigated changes in plasma fructose levels after continuous positive airway pressure (CPAP) treatment using samples from patients with OSA (n = 60) diagnosed by polysomnography at Kyoto University Hospital, and found that patients with marked hypoxemia exhibited prominent hyperfructosemia and their plasma fructose levels lowered after CPAP treatment. These data suggest that hyperfructosemia is the abnormality characteristic to SDB, which can be reduced by CPAP treatment.
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Affiliation(s)
- Yoshinari Nakatsuka
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kimihiko Murase
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazuhiro Sonomura
- Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasuharu Tabara
- Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan
| | - Tadao Nagasaki
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Hamada
- Department of Advanced Medicine for Respiratory Failure, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takeshi Matsumoto
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Department of Respiratory Medicine, Saiseikai Noe Hospital, Osaka, Japan
| | - Takuma Minami
- Department of Primary Care and Emergency Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Osamu Kanai
- Division of Respiratory Medicine, Center for Respiratory Diseases, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Hirofumi Takeyama
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hironobu Sunadome
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naomi Takahashi
- Department of Respiratory Care and Sleep Control Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Isuzu Nakamoto
- Nursing Science, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kiminobu Tanizawa
- Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomohiro Handa
- Department of Advanced Medicine for Respiratory Failure, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Taka-Aki Sato
- Life Science Research Center, Technology Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Naoko Komenami
- Department of Food and Nutrition, Kyoto Women's University, Kyoto, Japan
| | - Tomoko Wakamura
- Nursing Science, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takeo Nakayama
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan
| | - Toyohiro Hirai
- Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoichiro Kamatani
- Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Fumihiko Matsuda
- Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazuo Chin
- Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
- Department of Sleep Medicine and Respiratory Care, Division of Respiratory Medicine, Nihon University of Medicine, 1-30, Uemachi Otaniguchi Itabashi-Ku, Tokyo, 173-8610, Japan.
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15
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Oberto VJ, Matsumoto J, Pompili MN, Todorova R, Papaleo F, Nishijo H, Venance L, Vandecasteele M, Wiener SI. Rhythmic oscillations in the midbrain dopaminergic nuclei in mice. Front Cell Neurosci 2023; 17:1131313. [PMID: 37426551 PMCID: PMC10326437 DOI: 10.3389/fncel.2023.1131313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 05/29/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Dopamine release in the forebrain by midbrain ventral tegmental nucleus (VTA) and substantia nigra pars compacta (SNc) neurons is implicated in reward processing, goal-directed learning, and decision-making. Rhythmic oscillations of neural excitability underlie coordination of network processing, and have been reported in these dopaminergic nuclei at several frequency bands. This paper provides a comparative characterization of several frequencies of oscillations of local field potential and single unit activity, highlighting some behavioral correlates. Methods We recorded from optogenetically identified dopaminergic sites in four mice training in operant olfactory and visual discrimination tasks. Results Rayleigh and Pairwise Phase Consistency (PPC) analyses revealed some VTA/SNc neurons phase-locked to each frequency range, with fast spiking interneurons (FSIs) prevalent at 1-2.5 Hz (slow) and 4 Hz bands, and dopaminergic neurons predominant in the theta band. More FSIs than dopaminergic neurons were phase-locked in the slow and 4 Hz bands during many task events. The highest incidence of phase-locking in neurons was in the slow and 4 Hz bands, and occurred during the delay between the operant choice and trial outcome (reward or punishment) signals. Discussion These data provide a basis for further examination of rhythmic coordination of activity of dopaminergic nuclei with other brain structures, and its impact for adaptive behavior.
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Affiliation(s)
- Virginie J. Oberto
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
- Neuro-Electronics Research Flanders, Leuven, Belgium
| | | | - Marco N. Pompili
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
| | - Ralitsa Todorova
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
| | - Francesco Papaleo
- Genetics of Cognition Laboratory, Neuroscience Area, Istituto Italiano di Tecnologia, Genova, Italy
| | - Hisao Nishijo
- System Emotional Science, University of Toyama, Toyama, Japan
| | - Laurent Venance
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
| | - Marie Vandecasteele
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
| | - Sidney I. Wiener
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France
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16
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Hirotsu Y, Sugiura H, Takatori M, Mochizuki H, Omata M. Antibody Response to the BA.5 Bivalent Vaccine Shot: a Two-Year Follow-Up Study following Initial COVID-19 mRNA Vaccination. Microbiol Spectr 2023; 11:e0131623. [PMID: 37191496 PMCID: PMC10269437 DOI: 10.1128/spectrum.01316-23] [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: 03/27/2023] [Accepted: 04/27/2023] [Indexed: 05/17/2023] Open
Abstract
Although many studies have been conducted on the increase in spike antibody levels after vaccination, there is insufficient prospective and longitudinal information on the BA.5-adapted bivalent vaccine up to the fifth vaccination. In this study, we conducted a follow-up study of spike antibody levels and infection history in 46 health care workers who received up to 5 vaccinations. Monovalent vaccines were administered for the first to fourth vaccinations, and a bivalent vaccine was administered for the fifth vaccination. 11 serum samples were collected from each participant, and antibody levels were measured in a total of 506 serum samples. During the observation period, 43 of the 46 health care workers had no infection history, and 3 had a history of infection. Spike antibody levels peaked at 1 week after the second booster vaccination and gradually declined until the 27th week after the second vaccination. After 2 weeks following the fifth BA.5-adapted bivalent vaccine, the spike antibody levels significantly increased (median: 23,756 [IQR: 16,450 to 37,326]), compared to those measured before vaccination (median: 9,354 [IQR: 5,904 to 15,784]) (paired Wilcoxon signed-rank test, P = 5.7 × 10-14). These changes in antibody kinetics were observed regardless of age or sex. These results suggest that booster vaccination increased the spike antibody levels. Regular vaccination is effective in maintaining long-term antibody levels. IMPORTANCE A COVID-19 bivalent mRNA vaccine was developed and administered to health care workers. The COVID-19 mRNA vaccine induces a robust antibody response. However, little is known about the antibody response to vaccines in serially collected blood samples from the same individuals. Here, we provide two-year follow-up data on the humoral immune response to COVID-19 mRNA vaccines in health care workers who received up to five vaccinations, including the BA.5-adapted bivalent vaccine. The results suggest that regular vaccination is effective in maintaining long-term antibody levels and have implications for vaccine efficacy and booster dose strategies in health care settings.
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Affiliation(s)
- Yosuke Hirotsu
- Genome Analysis Center, Yamanashi Central Hospital, Kofu, Japan
| | - Hiroki Sugiura
- Division of Clinical Biochemistry and Immunology, Yamanashi Central Hospital, Kofu, Japan
| | - Mika Takatori
- Division of Infection Control and Prevention, Yamanashi Central Hospital, Kofu, Japan
| | - Hitoshi Mochizuki
- Genome Analysis Center, Yamanashi Central Hospital, Kofu, Japan
- Central Clinical Laboratory, Yamanashi Central Hospital, Kofu, Japan
- Department of Gastroenterology, Yamanashi Central Hospital, Kofu, Japan
| | - Masao Omata
- Department of Gastroenterology, Yamanashi Central Hospital, Kofu, Japan
- The University of Tokyo, Tokyo, Japan
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17
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Fujihara K. Beyond the γ-aminobutyric acid hypothesis of schizophrenia. Front Cell Neurosci 2023; 17:1161608. [PMID: 37168420 PMCID: PMC10165250 DOI: 10.3389/fncel.2023.1161608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/04/2023] [Indexed: 05/13/2023] Open
Abstract
Abnormalities in the γ-aminobutyric acid (GABA) system have been reported in the postmortem brains of individuals with schizophrenia. In particular, the reduction of one of the GABA-synthesizing enzymes, the 67-kDa isoform of glutamate decarboxylase (GAD67), has garnered interest among researchers because of its role in the formation of γ-oscillations and its potential involvement in the cognitive dysfunction observed in schizophrenia. Although several animal models have been generated to simulate the alterations observed in postmortem brain studies, they exhibit inconsistent behavioral phenotypes, leading to conflicting views regarding their contributions to the pathogenesis and manifestation of schizophrenia symptoms. For instance, GAD67 knockout rats (also known as Gad1 knockout rats) exhibit marked impairments in spatial working memory, but other model animals do not. In this review, we summarize the phenotypic attributes of these animal models and contemplate the potential for secondary modifications that may arise from the disruption of the GABAergic nervous system.
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Affiliation(s)
- Kazuyuki Fujihara
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
- *Correspondence: Kazuyuki Fujihara,
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18
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Nagakubo Y, Hirotsu Y, Maejima M, Shibusawa M, Hosaka K, Amemiya K, Sueki H, Hayakawa M, Mochizuki H, Tsutsui T, Kakizaki Y, Miyashita Y, Omata M. Non-pharmaceutical interventions during the COVID-19 epidemic changed detection rates of other circulating respiratory pathogens in Japan. PLoS One 2022; 17:e0262874. [PMID: 35061862 PMCID: PMC8782330 DOI: 10.1371/journal.pone.0262874] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 07/04/2021] [Accepted: 01/06/2022] [Indexed: 12/21/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has circulated worldwide and causes coronavirus disease 2019 (COVID-19). At the onset of the COVID-19 pandemic, infection control measures were taken, such as hand washing, mask wearing, and behavioral restrictions. However, it is not fully clear how the effects of these non-pharmaceutical interventions changed the prevalence of other pathogens associated with respiratory infections. In this study, we collected 3,508 nasopharyngeal swab samples from 3,249 patients who visited the Yamanashi Central Hospital in Japan from March 1, 2020 to February 28, 2021. We performed multiplex polymerase chain reaction (PCR) using the FilmArray Respiratory Panel and singleplex quantitative reverse transcription PCR targeting SARS-CoV-2 to detect respiratory disease-associated pathogens. At least one pathogen was detected in 246 (7.0%) of the 3,508 samples. Eleven types of pathogens were detected in the samples collected from March-May 2020, during which non-pharmaceutical interventions were not well implemented. In contrast, after non-pharmaceutical interventions were thoroughly implemented, only five types of pathogens were detected, and the majority were SARS-CoV-2, adenoviruses, or human rhinoviruses / enteroviruses. The 0-9 year age group had a higher prevalence of infection with adenoviruses and human rhinoviruses / enteroviruses compared with those 10 years and older, while those 10 years and older had a higher prevalence of infection with SARS-CoV-2 and other pathogens. These results indicated that non-pharmaceutical interventions likely reduced the diversity of circulating pathogens. Moreover, differences in the prevalence of pathogens were observed among the different age groups.
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Affiliation(s)
- Yuki Nagakubo
- Genome Analysis Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- Division of Microbiology in Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- Division of Genetics and Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Yosuke Hirotsu
- Genome Analysis Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- * E-mail:
| | - Makoto Maejima
- Division of Microbiology in Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Masahiro Shibusawa
- Division of Microbiology in Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Kazuhiro Hosaka
- Division of Microbiology in Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Kenji Amemiya
- Division of Genetics and Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Hitomi Sueki
- Division of Microbiology in Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Miyoko Hayakawa
- Central Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Hitoshi Mochizuki
- Genome Analysis Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- Central Clinical Laboratory, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- Department of Gastroenterology, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Toshiharu Tsutsui
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Yumiko Kakizaki
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Yoshihiro Miyashita
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
| | - Masao Omata
- Department of Gastroenterology, Yamanashi Central Hospital, Kofu, Yamanashi, Japan
- The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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19
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Kitamura T, Suzuki R, Inuki S, Ohno H, McPhail KL, Oishi S. Design of Coibamide A Mimetics with Improved Cellular Bioactivity. ACS Med Chem Lett 2022; 13:105-110. [PMID: 35059129 PMCID: PMC8762706 DOI: 10.1021/acsmedchemlett.1c00591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/06/2021] [Indexed: 11/30/2022] Open
Abstract
Coibamide A, a cyclic depsipeptide isolated from a Panamanian marine cyanobacterium, shows potent cytotoxic activity via the inhibition of the Sec61 translocon. We designed a coibamide A mimetic in which the ester linkage between MeThr and d-MeAla in coibamide A was replaced with an alkyl linker to provide a stable macrocyclic scaffold possessing a MeLys(Me) residue. Taking advantage of a facile solid-phase synthetic approach, an structure-activity relationship (SAR) study of the newly designed macrocyclic structure was performed, with a focus on altering the pattern of N-methyl substitution and amino acid configurations. Overall, the simplified macrocyclic scaffold with an alkyl linker resulted in a significantly reduced cytotoxicity. Instead, more potent coibamide A derivatives with a β-(4-biphenylyl)alanine (Bph) group were identified after the optimization of the Tyr(Me) position in the original macrocyclic scaffold of coibamide A based on the characteristic apratoxin A substructures. The similar SAR between coibamide A and apratoxin A suggests that the binding site of the Tyr(Me) side chain at the luminal end of Sec61α may be shared.
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Affiliation(s)
- Takashi Kitamura
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Rikito Suzuki
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
- Department
of Medicinal Chemistry, Kyoto Pharmaceutical
University, Yamashina-ku, Kyoto 607-8412, Japan
| | - Shinsuke Inuki
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kerry L. McPhail
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Shinya Oishi
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
- Department
of Medicinal Chemistry, Kyoto Pharmaceutical
University, Yamashina-ku, Kyoto 607-8412, Japan
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20
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Saito M, Nishitani K, Ito H, Ikezoe T, Furu M, Okahata A, Nigoro K, Kawata T, Nakamura S, Kuriyama S, Tabara Y, Ichihashi N, Tsuboyama T, Matsuda F, Matsuda S. Tenderness of the knee is associated with thinning of the articular cartilage evaluated with ultrasonography in a community-based cohort: The Nagahama study. Mod Rheumatol 2021:roab040. [PMID: 34910204 DOI: 10.1093/mr/roab040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/02/2021] [Accepted: 07/09/2021] [Indexed: 11/14/2022]
Abstract
OBJECTIVES This study aimed to elucidate the association between joint line tenderness (JLT) of the knee and knee joint structural changes evaluated with ultrasonography (US) for the early diagnosis of knee osteoarthritis (KOA). METHODS This cross-sectional study included 121 participants (age 71.7 ± 5.8 years, 75 women) from a community-based population. Bilateral structural changes in the knee joint were evaluated with US, and the presence or absence of JLT was evaluated using a pressure algometer. Logistic regression analysis was performed to evaluate the odds ratios (ORs) of US findings for the presence of JLT. Moreover, when the analysis was limited to knees with pre-/early radiographic KOA, the ORs were also calculated using logistic regression analysis. RESULTS Among the 242 knees, 38 had medial JLT, which was significantly associated with female sex (OR 11.87) and loss of cartilage thickness of the distal medial femoral condyle (CTh-MFC) (OR 0.12). Among 96 knees with Kellgren-Lawrence grade ≤ 2, 18 knees had medial JLT, which was also significantly associated with loss of CTh-MFC (OR 0.07) and medial osteophytes (OR 2.01). CONCLUSIONS JLT is significantly associated with thinning of the femoral cartilage and larger osteophytes in elderly patients, even in those with pre-/early radiographic KOA.
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Grants
- 25293141, 26670313, 26293198, 17H04182, 17H04126, 17H04123, 18K18450 Ministry of Education, Culture, Sports, Science and Technology of Japan
- ek0109070, ek0109070, ek0109196, ek0109348 Practical Research Project for Rare/Intractable Diseases
- H26-Choju-Ippan-001, dk0207006, dk0207027 Comprehensive Research on Aging and Health Science Research Grants for Dementia R&D
- kk0205008 Integrated Database of Clinical and Genomic Information
- ek0210066, ek0210096, ek0210116 Practical Research Project for Lifestyle-related Diseases including Cardiovascular Diseases and Diabetes Mellitus
- le0110005 Japan Agency for Medical Research and Development
- Takeda Medical Research Foundation
- Mitsubishi Foundation
- Daiwa Securities Health Foundation
- Sumitomo Foundation
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Affiliation(s)
- Motoo Saito
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kohei Nishitani
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiromu Ito
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tome Ikezoe
- Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Moritoshi Furu
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akinori Okahata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazuya Nigoro
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tomotoshi Kawata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinichiro Nakamura
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinichi Kuriyama
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasuharu Tabara
- Department of Health Informatics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tadao Tsuboyama
- Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
- School of Health Sciences, Bukkyo University, Kyoto, Japan
| | - Fumihiko Matsuda
- Department of Health Informatics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shuichi Matsuda
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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21
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Yan X, Imano N, Tamaki K, Sano M, Shinmura K. The effect of caloric restriction on the increase in senescence-associated T cells and metabolic disorders in aged mice. PLoS One 2021; 16:e0252547. [PMID: 34143796 PMCID: PMC8213184 DOI: 10.1371/journal.pone.0252547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 05/18/2021] [Indexed: 12/14/2022] Open
Abstract
Aging is associated with functional decline in the immune system and increases the risk of chronic diseases owing to smoldering inflammation. In the present study, we demonstrated an age-related increase in the accumulation of Programmed Death-1 (PD-1)+ memory-phenotype T cells that are considered “senescence-associated T cells” in both the visceral adipose tissue and spleen. As caloric restriction is an established intervention scientifically proven to exert anti-aging effects and greatly affects physiological and pathophysiological alterations with advanced age, we evaluated the effect of caloric restriction on the increase in this T-cell subpopulation and glucose tolerance in aged mice. Long-term caloric restriction significantly decreased the number of PD-1+ memory-phenotype cluster of differentiation (CD) 4+ and CD8+ T cells in the spleen and visceral adipose tissue, decreased M1-type macrophage accumulation in visceral adipose tissue, and improved insulin resistance in aged mice. Furthermore, the immunological depletion of PD-1+ T cells reduced adipose inflammation and improved insulin resistance in aged mice. Taken together with our previous report, these results indicate that senescence-related T-cell subpopulations are involved in the development of chronic inflammation and insulin resistance in the context of chronological aging and obesity. Thus, long-term caloric restriction and specific deletion of senescence-related T cells are promising interventions to regulate age-related chronic diseases.
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Affiliation(s)
- Xiaoxiang Yan
- Ruijin Hospital, Institute of Cardiovascular Diseases and Department of Cardiology, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Natsumi Imano
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
- Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, Sanda, Japan
| | - Kayoko Tamaki
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Motoaki Sano
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Ken Shinmura
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
- * E-mail: ,
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22
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Koga T, Sasaki F, Saeki K, Tsuchiya S, Okuno T, Ohba M, Ichiki T, Iwamoto S, Uzawa H, Kitajima K, Meno C, Nakamura E, Tada N, Fukui Y, Kikuta J, Ishii M, Sugimoto Y, Nakao M, Yokomizo T. Expression of leukotriene B 4 receptor 1 defines functionally distinct DCs that control allergic skin inflammation. Cell Mol Immunol 2021; 18:1437-1449. [PMID: 33037399 PMCID: PMC8167169 DOI: 10.1038/s41423-020-00559-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 11/25/2022] Open
Abstract
Leukotriene B4 (LTB4) receptor 1 (BLT1) is a chemotactic G protein-coupled receptor expressed by leukocytes, such as granulocytes, macrophages, and activated T cells. Although there is growing evidence that BLT1 plays crucial roles in immune responses, its role in dendritic cells remains largely unknown. Here, we identified novel DC subsets defined by the expression of BLT1, namely, BLT1hi and BLT1lo DCs. We also found that BLT1hi and BLT1lo DCs differentially migrated toward LTB4 and CCL21, a lymph node-homing chemoattractant, respectively. By generating LTB4-producing enzyme LTA4H knockout mice and CD11c promoter-driven Cre recombinase-expressing BLT1 conditional knockout (BLT1 cKO) mice, we showed that the migration of BLT1hi DCs exacerbated allergic contact dermatitis. Comprehensive transcriptome analysis revealed that BLT1hi DCs preferentially induced Th1 differentiation by upregulating IL-12p35 expression, whereas BLT1lo DCs accelerated T cell proliferation by producing IL-2. Collectively, the data reveal an unexpected role for BLT1 as a novel DC subset marker and provide novel insights into the role of the LTB4-BLT1 axis in the spatiotemporal regulation of distinct DC subsets.
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Affiliation(s)
- Tomoaki Koga
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, 860-0811, Japan
| | - Fumiyuki Sasaki
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Kazuko Saeki
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Soken Tsuchiya
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Toshiaki Okuno
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Mai Ohba
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Takako Ichiki
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Satoshi Iwamoto
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Hirotsugu Uzawa
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Keiko Kitajima
- Department of Developmental Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Chikara Meno
- Department of Developmental Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Eri Nakamura
- Laboratory of Genome Research, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Norihiro Tada
- Laboratory of Genome Research, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Junichi Kikuta
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, 565-0871, Japan
| | - Masaru Ishii
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, 565-0871, Japan
| | - Yukihiko Sugimoto
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Mitsuyoshi Nakao
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, 860-0811, Japan
| | - Takehiko Yokomizo
- Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan.
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Okada M, Kawagoe Y, Sato Y, Nozumi M, Ishikawa Y, Tamada A, Yamazaki H, Sekino Y, Kanemura Y, Shinmyo Y, Kawasaki H, Kaneko N, Sawamoto K, Fujii Y, Igarashi M. Phosphorylation of GAP-43 T172 is a molecular marker of growing axons in a wide range of mammals including primates. Mol Brain 2021; 14:66. [PMID: 33832520 PMCID: PMC8034164 DOI: 10.1186/s13041-021-00755-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 02/19/2021] [Indexed: 02/07/2023] Open
Abstract
GAP-43 is a vertebrate neuron-specific protein and that is strongly related to axon growth and regeneration; thus, this protein has been utilized as a classical molecular marker of these events and growth cones. Although GAP-43 was biochemically characterized more than a quarter century ago, how this protein is related to these events is still not clear. Recently, we identified many phosphorylation sites in the growth cone membrane proteins of rodent brains. Two phosphorylation sites of GAP-43, S96 and T172, were found within the top 10 hit sites among all proteins. S96 has already been characterized (Kawasaki et al., 2018), and here, phosphorylation of T172 was characterized. In vitro (cultured neurons) and in vivo, an antibody specific to phosphorylated T172 (pT172 antibody) specifically recognized cultured growth cones and growing axons in developing mouse neurons, respectively. Immunoblotting showed that pT172 antigens were more rapidly downregulated throughout development than those of pS96 antibody. From the primary structure, this phosphorylation site was predicted to be conserved in a wide range of animals including primates. In the developing marmoset brainstem and in differentiated neurons derived from human induced pluripotent stem cells, immunoreactivity with pT172 antibody revealed patterns similar to those in mice. pT172 antibody also labeled regenerating axons following sciatic nerve injury. Taken together, the T172 residue is widely conserved in a wide range of mammals including primates, and pT172 is a new candidate molecular marker for growing axons.
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Affiliation(s)
- Masayasu Okada
- Department of Neurosurgery, Brain Research Institute, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, Japan
- Medical and Dental Hospital, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, Japan
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
| | - Yosuke Kawagoe
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
| | - Yuta Sato
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Motohiro Nozumi
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
| | - Yuya Ishikawa
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
- Department of Orthopedic Surgery, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, Japan
| | - Atsushi Tamada
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan
- Department of iPS Cell Applied Medicine, Faculty of Medicine, Kansai Medical University, Hirakata, Osaka, 573-1010, Japan
| | - Hiroyuki Yamazaki
- Department of Neurobiology and Behavior, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuko Sekino
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo, Japan
| | - Yonehiro Kanemura
- Division of Regenerative Medicine, Department of Biomedical Research and Innovation, Institute for Clinical Research, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Yohei Shinmyo
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Kawasaki
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Naoko Kaneko
- Department of Developmental and Regenerative Neurobiology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kazunobu Sawamoto
- Department of Developmental and Regenerative Neurobiology, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Division of Neural Development and Regeneration, National Institute for Physiological Sciences, Okazaki, Japan
| | - Yukihiko Fujii
- Department of Neurosurgery, Brain Research Institute, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, Japan
- Medical and Dental Hospital, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, Japan
| | - Michihiro Igarashi
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine and Graduate School of Medical/Dental Sciences, Niigata University, Niigata, 951-8510, Japan.
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24
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Suzuki K, Shinohara M, Uno Y, Tashiro Y, Gheni G, Yamamoto M, Fukumori A, Shindo A, Mashimo T, Tomimoto H, Sato N. Deletion of B-cell translocation gene 2 (BTG2) alters the responses of glial cells in white matter to chronic cerebral hypoperfusion. J Neuroinflammation 2021; 18:86. [PMID: 33812385 PMCID: PMC8019185 DOI: 10.1186/s12974-021-02135-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 03/19/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Subcortical ischemic vascular dementia, one of the major subtypes of vascular dementia, is characterized by lacunar infarcts and white matter lesions caused by chronic cerebral hypoperfusion. In this study, we used a mouse model of bilateral common carotid artery stenosis (BCAS) to investigate the role of B-cell translocation gene 2 (BTG2), an antiproliferation gene, in the white matter glial response to chronic cerebral hypoperfusion. METHODS Btg2-/- mice and littermate wild-type control mice underwent BCAS or sham operation. Behavior phenotypes were assessed by open-field test and Morris water maze test. Brain tissues were analyzed for the degree of white matter lesions and glial changes. To further confirm the effects of Btg2 deletion on proliferation of glial cells in vitro, BrdU incorporation was investigated in mixed glial cells derived from wild-type and Btg2-/- mice. RESULTS Relative to wild-type mice with or without BCAS, BCAS-treated Btg2-/- mice exhibited elevated spontaneous locomotor activity and poorer spatial learning ability. Although the severities of white matter lesions did not significantly differ between wild-type and Btg2-/- mice after BCAS, the immunoreactivities of GFAP, a marker of astrocytes, and Mac2, a marker of activated microglia and macrophages, in the white matter of the optic tract were higher in BCAS-treated Btg2-/- mice than in BCAS-treated wild-type mice. The expression level of Gfap was also significantly elevated in BCAS-treated Btg2-/- mice. In vitro analysis showed that BrdU incorporation in mixed glial cells in response to inflammatory stimulation associated with cerebral hypoperfusion was higher in Btg2-/- mice than in wild-type mice. CONCLUSION BTG2 negatively regulates glial cell proliferation in response to cerebral hypoperfusion, resulting in behavioral changes.
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Affiliation(s)
- Kaoru Suzuki
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Mitsuru Shinohara
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Uno
- Institute of Experimental Animal Sciences, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshitaka Tashiro
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Ghupurjan Gheni
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Miho Yamamoto
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
| | - Akio Fukumori
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akihiko Shindo
- Department of Neurology, Graduate School of Medicine, Mie University, 174, Edobashi 2-chome, Tsu, Mie, 514-8507, Japan
| | - Tomoji Mashimo
- Institute of Experimental Animal Sciences, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Graduate School of Medicine, Mie University, 174, Edobashi 2-chome, Tsu, Mie, 514-8507, Japan
| | - Naoyuki Sato
- Department of Aging Neurobiology, Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, 7-430, Morioka, Obu, Aichi, 474-8511, Japan.
- Department of Aging Neurobiology, Graduate School of Medicine, Osaka University, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Takeda K, Uda A, Mitsubori M, Nagashima S, Iwasaki H, Ito N, Shiiba I, Ishido S, Matsuoka M, Inatome R, Yanagi S. Mitochondrial ubiquitin ligase alleviates Alzheimer's disease pathology via blocking the toxic amyloid-β oligomer generation. Commun Biol 2021; 4:192. [PMID: 33580194 PMCID: PMC7881000 DOI: 10.1038/s42003-021-01720-2] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/23/2020] [Indexed: 12/28/2022] Open
Abstract
Mitochondrial pathophysiology is implicated in the development of Alzheimer's disease (AD). An integrative database of gene dysregulation suggests that the mitochondrial ubiquitin ligase MITOL/MARCH5, a fine-tuner of mitochondrial dynamics and functions, is downregulated in patients with AD. Here, we report that the perturbation of mitochondrial dynamics by MITOL deletion triggers mitochondrial impairments and exacerbates cognitive decline in a mouse model with AD-related Aβ pathology. Notably, MITOL deletion in the brain enhanced the seeding effect of Aβ fibrils, but not the spontaneous formation of Aβ fibrils and plaques, leading to excessive secondary generation of toxic and dispersible Aβ oligomers. Consistent with this, MITOL-deficient mice with Aβ etiology exhibited worsening cognitive decline depending on Aβ oligomers rather than Aβ plaques themselves. Our findings suggest that alteration in mitochondrial morphology might be a key factor in AD due to directing the production of Aβ form, oligomers or plaques, responsible for disease development.
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Affiliation(s)
- Keisuke Takeda
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
- Department of Biology, University of Padova, Padova, Italy
- Venetian Institute of Molecular Medicine, Padova, Italy
| | - Aoi Uda
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Mikihiro Mitsubori
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Shun Nagashima
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Hiroko Iwasaki
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Naoki Ito
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
- Laboratory of Molecular Biochemistry, Department of Life Science, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan
| | - Isshin Shiiba
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
- Laboratory of Molecular Biochemistry, Department of Life Science, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan
| | - Satoshi Ishido
- Department of Microbiology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Masaaki Matsuoka
- Department of Pharmacology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Ryoko Inatome
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
- Laboratory of Molecular Biochemistry, Department of Life Science, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan
| | - Shigeru Yanagi
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan.
- Laboratory of Molecular Biochemistry, Department of Life Science, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo, Japan.
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Abe K, Kuroda M, Narumi Y, Kobayashi Y, Itohara S, Furuichi T, Sano Y. Cortico-amygdala interaction determines the insular cortical neurons involved in taste memory retrieval. Mol Brain 2020; 13:107. [PMID: 32723372 PMCID: PMC7385890 DOI: 10.1186/s13041-020-00646-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 07/15/2020] [Indexed: 12/30/2022] Open
Abstract
The insular cortex (IC) is the primary gustatory cortex, and it is a critical structure for encoding and retrieving the conditioned taste aversion (CTA) memory. In the CTA, consumption of an appetitive tastant is associated with aversive experience such as visceral malaise, which results in avoidance of consuming a learned tastant. Previously, we showed that levels of the cyclic-AMP-response-element-binding protein (CREB) determine the insular cortical neurons that proceed to encode a conditioned taste memory. In the amygdala and hippocampus, it is shown that CREB and neuronal activity regulate memory allocation and the neuronal mechanism that determines the specific neurons in a neural network that will store a given memory. However, cellular mechanism of memory allocation in the insular cortex is not fully understood. In the current study, we manipulated the neuronal activity in a subset of insular cortical and/or basolateral amygdala (BLA) neurons in mice, at the time of learning; for this purpose, we used an hM3Dq designer receptor exclusively activated by a designer drug system (DREADD). Subsequently, we examined whether the neuronal population whose activity is increased during learning, is reactivated by memory retrieval, using the expression of immediate early gene c-fos. When an hM3Dq receptor was activated only in a subset of IC neurons, c-fos expression following memory retrieval was not significantly observed in hM3Dq-positive neurons. Interestingly, the probability of c-fos expression in hM3Dq-positive IC neurons after retrieval was significantly increased when the IC and BLA were co-activated during conditioning. Our findings suggest that functional interactions between the IC and BLA regulates CTA memory allocation in the insular cortex, which shed light on understanding the mechanism of memory allocation regulated by interaction between relevant brain areas.
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Affiliation(s)
- Konami Abe
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510 Japan
| | - Marin Kuroda
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510 Japan
| | - Yosuke Narumi
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510 Japan
| | - Yuki Kobayashi
- Laboratory for Behavioral Genetics, Center for Brain Science, Wako, Saitama 351-0198 Japan
- Present Address: Brain/MINDS, RIKEN Center for Brain Science, Wako, Saitama 351-0198 Japan
| | - Shigeyoshi Itohara
- Laboratory for Behavioral Genetics, Center for Brain Science, Wako, Saitama 351-0198 Japan
- Present Address: Brain/MINDS, RIKEN Center for Brain Science, Wako, Saitama 351-0198 Japan
| | - Teiichi Furuichi
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510 Japan
| | - Yoshitake Sano
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510 Japan
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Nakatsu S, Murakami S, Shindo K, Horimoto T, Sagara H, Noda T, Kawaoka Y. Influenza C and D Viruses Package Eight Organized Ribonucleoprotein Complexes. J Virol 2018; 92:e02084-17. [PMID: 29321324 PMCID: PMC5827381 DOI: 10.1128/jvi.02084-17] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [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: 11/30/2017] [Accepted: 12/15/2017] [Indexed: 11/20/2022] Open
Abstract
Influenza A and B viruses have eight-segmented, single-stranded, negative-sense RNA genomes, whereas influenza C and D viruses have seven-segmented genomes. Each genomic RNA segment exists in the form of a ribonucleoprotein complex (RNP) in association with nucleoproteins and an RNA-dependent RNA polymerase in virions. Influenza D virus was recently isolated from swine and cattle, but its morphology is not fully studied. Here, we examined the morphological characteristics of D/bovine/Yamagata/10710/2016 (D/Yamagata) and C/Ann Arbor/50 (C/AA), focusing on RNPs packaged within the virions. By scanning transmission electron microscopic tomography, we found that more than 70% of D/Yamagata and C/AA virions packaged eight RNPs arranged in the "1+7" pattern as observed in influenza A and B viruses, even though type C and D virus genomes are segmented into only seven segments. These results imply that influenza viruses generally package eight RNPs arranged in the "1+7" pattern regardless of the number of RNA segments in their genome.IMPORTANCE The genomes of influenza A and B viruses are segmented into eight segments of negative-sense RNA, and those of influenza C and D viruses are segmented into seven segments. For progeny virions to be infectious, each virion needs to package all of their genomic segments. Several studies support the conclusion that influenza A and B viruses selectively package eight distinct genomic RNA segments; however, the packaging of influenza C and D viruses, which possess seven segmented genomes, is less understood. By using electron microscopy, we showed that influenza C and D viruses package eight RNA segments just as influenza A and B viruses do. These results suggest that influenza viruses prefer to package eight RNA segments within virions independent of the number of genome segments.
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Affiliation(s)
- Sumiho Nakatsu
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Shin Murakami
- Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Keiko Shindo
- Laboratory of Ultrastructural Virology, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Taisuke Horimoto
- Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Hiroshi Sagara
- Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Takeshi Noda
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
- Laboratory of Ultrastructural Virology, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshihiro Kawaoka
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Wisconsin, USA
- International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Tokyo, Japan
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28
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Tsuji M, Kawasaki T, Matsuda T, Arai T, Gojo S, Takeuchi JK. Sexual dimorphisms of mRNA and miRNA in human/murine heart disease. PLoS One 2017; 12:e0177988. [PMID: 28704447 PMCID: PMC5509429 DOI: 10.1371/journal.pone.0177988] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 11/23/2016] [Accepted: 05/05/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Sexual dimorphisms are well recognized in various cardiac diseases such as ischemic cardiomyopathy (ICM), hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM). Thorough understanding of the underlying genetic programs is crucial to optimize treatment strategies specified for each gender. By performing meta-analysis and microarray analysis, we sought to comprehensively characterize the sexual dimorphisms in the healthy and diseased heart at the level of both mRNA and miRNA transcriptome. RESULTS Existing mRNA microarray data of both mouse and human heart were integrated, identifying dozens/ hundreds of sexually dimorphic genes in healthy heart, ICM, HCM, and DCM. These sexually dimorphic genes overrepresented gene ontologies (GOs) important for cardiac homeostasis. Further, microarray of miRNA, isolated from mouse sham left ventricle (LV) (n = 6 & n = 5 for male & female) and chronic MI LV (n = 19 & n = 19) and from human normal LV (n = 6 & n = 6) and ICM LV (n = 4 & n = 5), was conducted. This revealed that 13 mouse miRNAs are sexually dimorphic in MI and 6 in normal heart. In human, 3 miRNAs were sexually dimorphic in ICM and 15 in normal heart. These data revealed miRNA-mRNA networks that operate in a sexually-biased fashion. CONCLUSIONS mRNA and miRNA transcriptome of normal and disease heart show significant sex differences, which might impact the cardiac homeostasis. Together this study provides the first comprehensive picture of the genome-wide program underlying the heart sexual dimorphisms, laying the foundation for gender specific treatment strategies.
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Affiliation(s)
- Masato Tsuji
- Division of Bio-informational Pharmacology, Medical Research Institute, Tokyo Medical Dental University, Tokyo, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- * E-mail: (MT); (JKT)
| | - Takanori Kawasaki
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeru Matsuda
- Department of Mathematical Informatics, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan
| | - Satoshi Gojo
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Jun K. Takeuchi
- Division of Bio-informational Pharmacology, Medical Research Institute, Tokyo Medical Dental University, Tokyo, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- * E-mail: (MT); (JKT)
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29
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Takayama K, Kaneko H, Kataoka K, Hattori K, Ra E, Tsunekawa T, Fukukita H, Haga F, Ito Y, Terasaki H. Comparison between 1-year outcomes of aflibercept with and without photodynamic therapy for polypoidal choroidal vasculopathy: Retrospective observation study. PLoS One 2017; 12:e0176100. [PMID: 28467427 PMCID: PMC5415056 DOI: 10.1371/journal.pone.0176100] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 01/21/2017] [Accepted: 04/05/2017] [Indexed: 11/19/2022] Open
Abstract
Polypoidal choroidal vasculopathy (PCV) is characterized by polyp-like choroidal neovascularization and a branching vascular network. Intravitreal aflibercept injection (IAI) or photodynamic therapy (PDT) is used for treatment. We retrospectively compared the 1-year outcomes of IAI monotherapy and its combination with initial PDT for PCV. Twelve eyes with naïve PCV received three IAIs and a single PDT after the first IAI and as needed injection (combination group); 11 eyes with naïve PCV received three IAIs and as needed injections (IAI group). Significant improvements in visual acuity after 2 months and in CRT after 1 month were maintained at 12 months in both groups (both P < 0.05); groups did not differ significantly at any time point. CCT significantly reduced after 3 and 12 months in the combination group (both P < 0.05) but not in the IAI group. A mean of 3.7 ± 0.9 and 5.6 ± 2.0 injections was administered to the combination and IAI groups, respectively (P = 0.013). Within a 1-year period, combination therapy was found to yield similar visual acuity and retinal structure improvements and maintenance as IAI monotherapy while requiring fewer IAIs.
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Affiliation(s)
- Kei Takayama
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Ophthalmology, National Defense Medical College, Tokorozawa, Japan
| | - Hiroki Kaneko
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail:
| | - Keiko Kataoka
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kyoko Hattori
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eimei Ra
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Taichi Tsunekawa
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroshi Fukukita
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Fuminori Haga
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuki Ito
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroko Terasaki
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Kaneko H, Asami T, Sugita T, Tsunekawa T, Matsuura T, Takayama K, Yamamoto K, Kachi S, Ito Y, Ueno S, Nonobe N, Kataoka K, Suzumura A, Iwase T, Terasaki H. Better Visual Outcome by Intraocular Lens Ejection in Geriatric Patients with Ruptured Ocular Injuries. PLoS One 2017; 12:e0170094. [PMID: 28107485 PMCID: PMC5249204 DOI: 10.1371/journal.pone.0170094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/30/2016] [Accepted: 12/28/2016] [Indexed: 11/18/2022] Open
Abstract
Ocular trauma is one of the leading causes of visual impairment worldwide. Because of the popularity of cataract surgeries, aged individuals with ocular trauma commonly have a surgical wound in their eyes. The purpose of this study was to evaluate the visual outcome of cases that were coincident with intraocular lens (IOL) ejection in the eyes with ruptured open-globe ocular injuries. Consecutive patients with open-globe ocular injuries were first reviewed. Patients’ characteristics, corrected distance visual acuities (CDVAs) over 3 years after the trauma, causes of injuries, traumatic wound patterns, and coexistence of retinal detachment were examined. The relationships between poor CDVA and the other factors, including the complications of crystalline lens and IOL ejection, were examined. A total of 105 eyes/patients [43 eyes with rupture, 33 with penetrating, 28 with intraocular foreign body (IOFB), and 1 with perforating injuries] were included. Rupture injuries were common in aged patients and were mostly caused by falls, whereas penetrating and IOFB injuries were common in young male patients. CDVAs of the eyes with rupture injuries were significantly worse than those of the eyes with penetrating or IOFB injuries. CDVA from more than 50% of the ruptured eyes resulted in no light perception or light perception to 20/500. CDVA of the ruptured eyes complicated by crystalline lens ejection was significantly worse than that of those complicated by IOL ejection. The wounds of the ruptured eyes complicated by IOL ejection were mainly located at the superior corneoscleral limbus, whereas those of the eyes complicated by crystalline lens ejection were located at the posterior sclera. There were significant correlations between poor CDVA and retinal detachment and crystalline lens ejection. These results proposed a new trend in the ocular injuries that commonly occur in aged patients; history of cataract surgery might affect the final visual outcome after open-globe ocular injuries.
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Affiliation(s)
- Hiroki Kaneko
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail:
| | - Tetsu Asami
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tadasu Sugita
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Taichi Tsunekawa
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toshiyuki Matsuura
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kei Takayama
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kentaro Yamamoto
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shu Kachi
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuki Ito
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinji Ueno
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Norie Nonobe
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Keiko Kataoka
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ayana Suzumura
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takeshi Iwase
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroko Terasaki
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Yamamoto T, Furuhashi M, Sugaya T, Oikawa T, Matsumoto M, Funahashi Y, Matsukawa Y, Gotoh M, Miura T. Transcriptome and Metabolome Analyses in Exogenous FABP4- and FABP5-Treated Adipose-Derived Stem Cells. PLoS One 2016; 11:e0167825. [PMID: 27936164 PMCID: PMC5148007 DOI: 10.1371/journal.pone.0167825] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 02/23/2016] [Accepted: 11/21/2016] [Indexed: 12/30/2022] Open
Abstract
Adipose-derived stem cells (ADSC), which exist near adipocytes in adipose tissue, have been used as a potential tool of regenerative medicine. Lipid chaperones, fatty acid-binding protein 4 (FABP4) and 5 (FABP5), are abundantly expressed in adipocytes. FABP4 has recently been shown to be secreted from adipocytes during lipolysis in a non-classical pathway and may act as an adipokine. Here, we investigated the role of exogenous FABP4 and FABP5 in transcriptional and metabolic regulation in ADSC. FABP4 and FABP5 were little expressed in ADSC. However, both FABP4 and FABP5 were significantly induced after adipocyte differentiation of ADSC and were secreted from the differentiated adipocytes. Analysis of microarray data, including gene ontology enrichment analysis and cascade analysis of the protein-protein interaction network using a transcription factor binding site search, demonstrated that treatment of ADSC with FABP4 or FABP5 affected several kinds of genes related to inflammatory and metabolic responses and the process of cell differentiation. Notably, myogenic factors, including myocyte enhancer factors, myogenic differentiation 1 and myogenin, were modulated by treatment of ADSC with FABP4, indicating that exogenous FABP4 treatment is partially associated with myogenesis in ADSC. Metabolome analysis showed that treatment of ADSC with FABP4 and with FABP5 similarly, but differently in extent, promoted hydrolysis and/or uptake of lipids, consequentially together with enhancement of β oxidation, inhibition of downstream of the glycolysis pathway, accumulation of amino acids, reduction of nucleic acid components and increase in the ratio of reduced and oxidized nicotinamide adenine dinucleotide phosphates (NADPH/NADP+), an indicator of reducing power, and the ratio of adenosine triphosphate and adenosine monophosphate (ATP/AMP), an indicator of the energy state, in ADSC. In conclusion, secreted FABP4 and FABP5 from adipocytes as adipokines differentially affect transcriptional and metabolic regulation in ADSC near adipocytes. The adiposity condition in the host of regenerative medicine may affect characteristics of ADSC by exposure of the balance of FABP4 and FABP5.
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Affiliation(s)
- Tokunori Yamamoto
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masato Furuhashi
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
| | - Takeshi Sugaya
- Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan
- CIMIC Co., Ltd; Mass Building Yushima, Bunkyo-ku, Tokyo, Japan
| | - Tsuyoshi Oikawa
- CIMIC Co., Ltd; Mass Building Yushima, Bunkyo-ku, Tokyo, Japan
| | - Megumi Matsumoto
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
| | - Yasuhito Funahashi
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshihisa Matsukawa
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Momokazu Gotoh
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tetsuji Miura
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
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Furuhashi M, Matsumoto M, Hiramitsu S, Omori A, Tanaka M, Moniwa N, Yoshida H, Ishii J, Miura T. Possible Increase in Serum FABP4 Level Despite Adiposity Reduction by Canagliflozin, an SGLT2 Inhibitor. PLoS One 2016; 11:e0154482. [PMID: 27124282 PMCID: PMC4849662 DOI: 10.1371/journal.pone.0154482] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 02/13/2016] [Accepted: 04/13/2016] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Fatty acid-binding protein 4 (FABP4/A-FABP/aP2) is secreted from adipocytes in association with catecholamine-induced lipolysis, and elevated serum FABP4 level is associated with obesity, insulin resistance and atherosclerosis. Secreted FABP4 as a novel adipokine leads to insulin resistance via increased hepatic glucose production (HGP). Sodium-glucose cotransporter 2 (SGLT2) inhibitors decrease blood glucose level via increased urinary glucose excretion, though HGP is enhanced. Here we investigated whether canagliflozin, an SGLT2 inhibitor, modulates serum FABP4 level. METHODS Canagliflozin (100 mg/day) was administered to type 2 diabetic patients (n = 39) for 12 weeks. Serum FABP4 level was measured before and after treatment. RESULTS At baseline, serum FABP4 level was correlated with adiposity, renal dysfunction and noradrenaline level. Treatment with canagliflozin significantly decreased adiposity and levels of fasting glucose and HbA1c but increased average serum FABP4 level by 10.3% (18.0 ± 1.0 vs. 19.8 ± 1.2 ng/ml, P = 0.008), though elevation of FABP4 level after treatment was observed in 26 (66.7%) out of 39 patients. Change in FABP4 level was positively correlated with change in levels of fasting glucose (r = 0.329, P = 0.044), HbA1c (r = 0.329, P = 0.044) and noradrenaline (r = 0.329, P = 0.041) but was not significantly correlated with change in adiposity or other variables. CONCLUSIONS Canagliflozin paradoxically increases serum FABP4 level in some diabetic patients despite amelioration of glucose metabolism and adiposity reduction, possibly via induction of catecholamine-induced lipolysis in adipocytes. Increased FABP4 level by canagliflozin may undermine the improvement of glucose metabolism and might be a possible mechanism of increased HGP by inhibition of SGLT2. TRIAL REGISTRATION UMIN-CTR Clinical Trial UMIN000018151.
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Affiliation(s)
- Masato Furuhashi
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
- * E-mail:
| | - Megumi Matsumoto
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Shinya Hiramitsu
- Hiramitsu Heart Clinic, Shiroshita-cho 2-35, Minami-ku, Nagoya, 457-0047, Aichi, Japan
| | - Akina Omori
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Marenao Tanaka
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Norihito Moniwa
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Hideaki Yoshida
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Junnichi Ishii
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Tetsuji Miura
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, S-1, W-16, Chuo-ku, Sapporo, 060-8543, Japan
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