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Suzuki K, Tange M, Yamagishi R, Hanada H, Mukai S, Sato T, Tanaka T, Akashi T, Kadomatsu K, Maeda T, Miida T, Takeuchi I, Murakami H, Sekido Y, Murakami-Tonami Y. SMG6 regulates DNA damage and cell survival in Hippo pathway kinase LATS2-inactivated malignant mesothelioma. Cell Death Dis 2022; 8:446. [PMID: 36335095 PMCID: PMC9637146 DOI: 10.1038/s41420-022-01232-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/17/2022] [Accepted: 10/20/2022] [Indexed: 11/08/2022]
Abstract
Many genes responsible for Malignant mesothelioma (MM) have been identified as tumor suppressor genes and it is difficult to target these genes directly at a molecular level. We searched for the gene which showed synthetic lethal phenotype with LATS2, one of the MM causative genes and one of the kinases in the Hippo pathway. Here we showed that knockdown of SMG6 results in synthetic lethality in LATS2-inactivated cells. We found that this synthetic lethality required the nuclear translocation of YAP1 and TAZ. Both are downstream factors of the Hippo pathway. We also demonstrated that this synthetic lethality did not require SMG6 in nonsense-mediated mRNA decay (NMD) but in regulating telomerase reverse transcriptase (TERT) activity. In addition, the RNA-dependent DNA polymerase (RdDP) activity of TERT was required for this synthetic lethal phenotype. We confirmed the inhibitory effects of LATS2 and SMG6 on cell proliferation in vivo. The result suggests an interaction between the Hippo and TERT signaling pathways. We also propose that SMG6 and TERT are novel molecular target candidates for LATS2-inactivated cancers such as MM.
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Affiliation(s)
- Koya Suzuki
- grid.258269.20000 0004 1762 2738Department of Clinical Laboratory of Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan ,grid.258269.20000 0004 1762 2738Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan ,grid.412788.00000 0001 0536 8427Cancer Molecular Genetics Lab, Tokyo University of Technology Graduate School of Bionics, Tokyo, Japan ,grid.264706.10000 0000 9239 9995Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
| | - Masaki Tange
- grid.412788.00000 0001 0536 8427Cancer Molecular Genetics Lab, Tokyo University of Technology Graduate School of Bionics, Tokyo, Japan
| | - Ryota Yamagishi
- grid.258799.80000 0004 0372 2033Department of Pathophysiology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Hiroyuki Hanada
- grid.7597.c0000000094465255Center for Advanced Intelligence Project, RIKEN, Tokyo, Japan
| | - Satomi Mukai
- grid.410800.d0000 0001 0722 8444Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Tatsuhiro Sato
- grid.410800.d0000 0001 0722 8444Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | | | - Tomohiro Akashi
- grid.27476.300000 0001 0943 978XDepartment of Integrative Cellular Informatics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Kadomatsu
- grid.27476.300000 0001 0943 978XDepartment of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan ,grid.27476.300000 0001 0943 978XInstitute for Glyco-core Research (iGCORE), Nagoya University, Nagoya, Japan
| | - Tohru Maeda
- grid.411042.20000 0004 0371 5415College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Takashi Miida
- grid.258269.20000 0004 1762 2738Department of Clinical Laboratory of Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ichiro Takeuchi
- grid.7597.c0000000094465255Center for Advanced Intelligence Project, RIKEN, Tokyo, Japan ,grid.27476.300000 0001 0943 978XGraduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Hiroshi Murakami
- grid.443595.a0000 0001 2323 0843Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, Tokyo, Japan
| | - Yoshitaka Sekido
- grid.410800.d0000 0001 0722 8444Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan ,grid.27476.300000 0001 0943 978XDivision of Molecular and Cellular Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuko Murakami-Tonami
- grid.258269.20000 0004 1762 2738Department of Clinical Laboratory of Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan ,grid.412788.00000 0001 0536 8427Cancer Molecular Genetics Lab, Tokyo University of Technology Graduate School of Bionics, Tokyo, Japan ,grid.410800.d0000 0001 0722 8444Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan
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2
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Huu Hoang T, Sato-Matsubara M, Yuasa H, Matsubara T, Thuy LTT, Ikenaga H, Phuong DM, Hanh NV, Hieu VN, Hoang DV, Hai H, Okina Y, Enomoto M, Tamori A, Daikoku A, Urushima H, Ikeda K, Dat NQ, Yasui Y, Shinkawa H, Kubo S, Yamagishi R, Ohtani N, Yoshizato K, Gracia-Sancho J, Kawada N. Cancer cells produce liver metastasis via gap formation in sinusoidal endothelial cells through proinflammatory paracrine mechanisms. Sci Adv 2022; 8:eabo5525. [PMID: 36170363 PMCID: PMC9519040 DOI: 10.1126/sciadv.abo5525] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 08/04/2022] [Indexed: 06/10/2023]
Abstract
Intracellular gap (iGap) formation in liver sinusoidal endothelial cells (LSECs) is caused by the destruction of fenestrae and appears under pathological conditions; nevertheless, their role in metastasis of cancer cells to the liver remained unexplored. We elucidated that hepatotoxin-damaged and fibrotic livers gave rise to LSECs-iGap formation, which was positively correlated with increased numbers of metastatic liver foci after intrasplenic injection of Hepa1-6 cells. Hepa1-6 cells induced interleukin-23-dependent tumor necrosis factor-α (TNF-α) secretion by LSECs and triggered LSECs-iGap formation, toward which their processes protruded to transmigrate into the liver parenchyma. TNF-α triggered depolymerization of F-actin and induced matrix metalloproteinase 9 (MMP9), intracellular adhesion molecule 1, and CXCL expression in LSECs. Blocking MMP9 activity by doxycycline or an MMP2/9 inhibitor eliminated LSECs-iGap formation and attenuated liver metastasis of Hepa1-6 cells. Overall, this study revealed that cancer cells induced LSEC-iGap formation via proinflammatory paracrine mechanisms and proposed MMP9 as a favorable target for blocking cancer cell metastasis to the liver.
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Affiliation(s)
- Truong Huu Hoang
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
- Department of Pain Medicine and Palliative Care, Cancer Institute, 108 Military Central Hospital, Hanoi, Vietnam
| | - Misako Sato-Matsubara
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
- Endowed Laboratory of Synthetic Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Hideto Yuasa
- Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Tsutomu Matsubara
- Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Le Thi Thanh Thuy
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Hiroko Ikenaga
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Dong Minh Phuong
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Ngo Vinh Hanh
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Vu Ngoc Hieu
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Dinh Viet Hoang
- Department of Anesthesiology, Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Hoang Hai
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Yoshinori Okina
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Masaru Enomoto
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Akihiro Tamori
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Atsuko Daikoku
- Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Hayato Urushima
- Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Kazuo Ikeda
- Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Ninh Quoc Dat
- Department of Pediatrics, Hanoi Medical University, Hanoi, Vietnam
| | - Yutaka Yasui
- Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan
| | - Hiroji Shinkawa
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Ryota Yamagishi
- Department of Pathophysiology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Naoko Ohtani
- Department of Pathophysiology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Katsutoshi Yoshizato
- Endowed Laboratory of Synthetic Biology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
- BioIntegrence Co. Ltd., Osaka, Japan
| | - Jordi Gracia-Sancho
- Liver Vascular Biology Research Group, IDIBAPS Biomedical Research Institute, CIBEREHD, Barcelona, Spain
| | - Norifumi Kawada
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
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Cheng Y, Yamagishi R, Nonaka Y, Sato-Matsubara M, Kawada N, Ohtani N. Non-heat-stressed Method to Isolate Hepatic Stellate Cells From Highly Steatotic Tumor-bearing Liver Using CD49a. Cell Mol Gastroenterol Hepatol 2022; 14:964-966.e9. [PMID: 35863743 PMCID: PMC9500454 DOI: 10.1016/j.jcmgh.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 12/10/2022]
Key Words
- hcc, hepatocellular carcinoma
- hfd, high-fat diet
- hsc, hepatic stellate cell
- ivc, inferior vena cava
- lsecs, liver sinusoidal endothelial cells
- nd, normal diet
- nt, non-tumor
- pv, portal vein
- scrna-seq, single-cell rna-sequencing
- t, tumor
- t-hhscs, hscs from human hcc tissue
- tme, tumor microenvironment
- t-sne, t-distributed stochastic neighbor embedding
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Affiliation(s)
| | | | | | - Misako Sato-Matsubara
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University (formerly, Osaka City University), Osaka, Japan
| | - Norifumi Kawada
- Department of Hepatology, Graduate School of Medicine, Osaka Metropolitan University (formerly, Osaka City University), Osaka, Japan
| | - Naoko Ohtani
- Department of Pathophysiology, Graduate School of Medicine, Osaka Metropolitan University (formerly, Osaka City University), Osaka, Japan; AMED-CREST, AMED, Japan Agency for Medical Research and Development, Tokyo, Japan.
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Yamagishi R, Kamachi F, Nakamura M, Yamazaki S, Kamiya T, Takasugi M, Cheng Y, Nonaka Y, Yukawa-Muto Y, Thuy LTT, Harada Y, Arai T, Loo TM, Yoshimoto S, Ando T, Nakajima M, Taguchi H, Ishikawa T, Akiba H, Miyake S, Kubo M, Iwakura Y, Fukuda S, Chen WY, Kawada N, Rudensky A, Nakae S, Hara E, Ohtani N. Gasdermin D-mediated release of IL-33 from senescent hepatic stellate cells promotes obesity-associated hepatocellular carcinoma. Sci Immunol 2022; 7:eabl7209. [PMID: 35749514 DOI: 10.1126/sciimmunol.abl7209] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Long-term senescent cells exhibit a secretome termed the senescence-associated secretory phenotype (SASP). Although the mechanisms of SASP factor induction have been intensively studied, the release mechanism and how SASP factors influence tumorigenesis in the biological context remain unclear. In this study, using a mouse model of obesity-induced hepatocellular carcinoma (HCC), we identified the release mechanism of SASP factors, which include interleukin-1β (IL-1β)- and IL-1β-dependent IL-33, from senescent hepatic stellate cells (HSCs) via gasdermin D (GSDMD) amino-terminal-mediated pore. We found that IL-33 was highly induced in senescent HSCs in an IL-1β-dependent manner in the tumor microenvironment. The release of both IL-33 and IL-1β was triggered by lipoteichoic acid (LTA), a cell wall component of gut microbiota that was transferred and accumulated in the liver tissue of high-fat diet-fed mice, and the release of these factors was mediated through cell membrane pores formed by the GSDMD amino terminus, which was cleaved by LTA-induced caspase-11. We demonstrated that IL-33 release from HSCs promoted HCC development via the activation of ST2-positive Treg cells in the liver tumor microenvironment. The accumulation of GSDMD amino terminus was also detected in HSCs from human NASH-associated HCC patients, suggesting that similar mechanism could be involved in a certain type of human HCC. These results uncover a release mechanism for SASP factors from sensitized senescent HSCs in the tumor microenvironment, thereby facilitating obesity-associated HCC progression. Furthermore, our findings highlight the therapeutic potential of inhibitors of GSDMD-mediated pore formation for HCC treatment.
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Affiliation(s)
- Ryota Yamagishi
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Fumitaka Kamachi
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University).,Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Masaru Nakamura
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Shota Yamazaki
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Tomonori Kamiya
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Masaki Takasugi
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Yi Cheng
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Yoshiki Nonaka
- Department of Pathophysiology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Yoshimi Yukawa-Muto
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University).,Department of Hepatology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Le Thi Thanh Thuy
- Department of Hepatology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Yohsuke Harada
- Laboratory of Pharmaceutical Immunology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Tatsuya Arai
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Tze Mun Loo
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan.,Cancer Institute, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
| | - Shin Yoshimoto
- Cancer Institute, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
| | - Tatsuya Ando
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Masahiro Nakajima
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Hayao Taguchi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Takamasa Ishikawa
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Hisaya Akiba
- Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan
| | - Sachiko Miyake
- Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan
| | - Masato Kubo
- Division of Molecular Pathology, Research Institute for Biomedical Science, Tokyo University of Science, Noda, Chiba, Japan.,Laboratory for Cytokine Regulation, Research Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
| | - Yoichiro Iwakura
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Shinji Fukuda
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.,Gut Environmental Design Group, Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa, Japan.,Transborder Medical Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Wei-Yu Chen
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.,Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Norifumi Kawada
- Department of Hepatology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University)
| | - Alexander Rudensky
- Howard Hughes Medical Institute and Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Susumu Nakae
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima City, Hiroshima, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Saitama, Japan
| | - Eiji Hara
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, Japan.,Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Japan
| | - Naoko Ohtani
- Department of Pathophysiology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan (formerly, Osaka City University).,Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan.,AMED-CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
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Abstract
There are many reports on the special wettability of hierarchical surface structures in nature. Snail shells with three types of roughness of 10, 100, and 500 µm have a unique wetting behavior. In the present study, we investigate the influence of the surface structure on the water wettability using snail shells with different surface roughness. The wettability of a water droplet on the samples was evaluated. The three types of roughness on the surface structure of snail shell had higher water droplet spreading properties than the two types of roughness 500 µm and, 10 or 100 µm. Surface structures of snail shells with different surface roughness were simulated using epoxy resins to clarify the mechanism for the dynamics wetting behavior. The contact angle with a hydrophobic nature, of the epoxy resin with the three types of roughness decreased with increasing time, indicating a hydrophilic nature. The base diameter of the epoxy resins with the three types of roughness increased with increasing time. This was larger than that for a flat epoxy resin with hydrophilicity. Other epoxy resins with shell texture containing 100 and 500 or 10 and 500 µm roughness showed almost no change in the contact angle and diameter of the droplet base. The three types of roughness on the sample surface contributed to development of the water droplet spreading. The 10 µm roughness of the sample surface influenced the dynamic contact angles.
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Affiliation(s)
- Ryota Yamagishi
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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6
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Hojo H, Yashiro Y, Noda Y, Ogami K, Yamagishi R, Okada S, Hoshino SI, Suzuki T. The RNA-binding protein QKI-7 recruits the poly(A) polymerase GLD-2 for 3' adenylation and selective stabilization of microRNA-122. J Biol Chem 2019; 295:390-402. [PMID: 31792053 DOI: 10.1074/jbc.ra119.011617] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/15/2019] [Indexed: 12/21/2022] Open
Abstract
MicroRNA-122 (miR-122) is highly expressed in hepatocytes, where it plays an important role in regulating cholesterol and fatty acid metabolism, and it is also a host factor required for hepatitis C virus replication. miR-122 is selectively stabilized by 3' adenylation mediated by the cytoplasmic poly(A) polymerase GLD-2 (also known as PAPD4 or TENT2). However, it is unclear how GLD-2 specifically stabilizes miR-122. Here, we show that QKI7 KH domain-containing RNA binding (QKI-7), one of three isoforms of the QKI proteins, which are members of the signal transduction and activation of RNA (STAR) family of RNA-binding proteins, is involved in miR-122 stabilization. QKI down-regulation specifically decreased the steady-state level of mature miR-122, but did not affect the pre-miR-122 level. We also found that QKI-7 uses its C-terminal region to interact with GLD-2 and its QUA2 domain to associate with the RNA-induced silencing complex protein Argonaute 2 (Ago2), indicating that the GLD-2-QKI-7 interaction recruits GLD-2 to Ago2. QKI-7 exhibited specific affinity to miR-122 and significantly promoted GLD-2-mediated 3' adenylation of miR-122 in vitro Taken together, our findings indicate that miR-122 binds Ago2-interacting QKI-7, which recruits GLD-2 for 3' adenylation and stabilization of miR-122.
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Affiliation(s)
- Hiroaki Hojo
- Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuka Yashiro
- Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuta Noda
- Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Koichi Ogami
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Ryota Yamagishi
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Shunpei Okada
- Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shin-Ichi Hoshino
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Tsutomu Suzuki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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Maeda H, Yamagishi R, Ishida EH, Kasuga T. Wettability and dynamics of water droplet on a snail shell. J Colloid Interface Sci 2019; 547:111-116. [PMID: 30947095 DOI: 10.1016/j.jcis.2019.03.096] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 12/25/2022]
Abstract
HYPOTHESIS There are many natural surfaces with special wettabilities. Snail shells have unique rough structures, which indicates a specific wettability. In this study, the surface of a snail shell was simulated using epoxy resins, and water droplet dynamics on original and simulated snail shells were investigated to understand its special wettability. EXPERIMENTS The shell of the Euhadra sandai species of snails was used. The surface structure of the snail shell was simulated using epoxy resins. The surface of this EP resin was treated with UV-O3 for different periods of time. Wettabilities and dynamics of water droplet on the samples were characterized. FINDINGS The surface of the snail shell with a water contact angle of approximately 85° caused the droplet to spread, which is the first report of water droplet dynamics on the shell surface. The behavior of a water droplet on the shell transformed from the Cassie state into the Wenzel state. Changes in the contact angle and diameter of the droplet base on the snail shell were larger than those on the epoxy resins. The surface roughness and chemical heterogeneity of the snail shell led to distortion of the three-phase contact line and enhancement of the spreading of the water droplet.
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Affiliation(s)
- Hirotaka Maeda
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan.
| | - Ryota Yamagishi
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Emile Hideki Ishida
- Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Toshihiro Kasuga
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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8
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Yamagishi R, Tsusaka T, Mitsunaga H, Maehata T, Hoshino SI. The STAR protein QKI-7 recruits PAPD4 to regulate post-transcriptional polyadenylation of target mRNAs. Nucleic Acids Res 2016; 44:2475-90. [PMID: 26926106 PMCID: PMC4824116 DOI: 10.1093/nar/gkw118] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/16/2016] [Indexed: 12/20/2022] Open
Abstract
Emerging evidence has demonstrated that regulating the length of the poly(A) tail on an mRNA is an efficient means of controlling gene expression at the post-transcriptional level. In early development, transcription is silenced and gene expression is primarily regulated by cytoplasmic polyadenylation. In somatic cells, considerable progress has been made toward understanding the mechanisms of negative regulation by deadenylation. However, positive regulation through elongation of the poly(A) tail has not been widely studied due to the difficulty in distinguishing whether any observed increase in length is due to the synthesis of new mRNA, reduced deadenylation or cytoplasmic polyadenylation. Here, we overcame this barrier by developing a method for transcriptional pulse-chase analysis under conditions where deadenylases are suppressed. This strategy was used to show that a member of the Star family of RNA binding proteins, QKI, promotes polyadenylation when tethered to a reporter mRNA. Although multiple RNA binding proteins have been implicated in cytoplasmic polyadenylation during early development, previously only CPEB was known to function in this capacity in somatic cells. Importantly, we show that only the cytoplasmic isoform QKI-7 promotes poly(A) tail extension, and that it does so by recruiting the non-canonical poly(A) polymerase PAPD4 through its unique carboxyl-terminal region. We further show that QKI-7 specifically promotes polyadenylation and translation of three natural target mRNAs (hnRNPA1, p27kip1 and β-catenin) in a manner that is dependent on the QKI response element. An anti-mitogenic signal that induces cell cycle arrest at G1 phase elicits polyadenylation and translation of p27kip1 mRNA via QKI and PAPD4. Taken together, our findings provide significant new insight into a general mechanism for positive regulation of gene expression by post-transcriptional polyadenylation in somatic cells.
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Affiliation(s)
- Ryota Yamagishi
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Takeshi Tsusaka
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Hiroko Mitsunaga
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Takaharu Maehata
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Shin-ichi Hoshino
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
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9
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Yamagishi R, Hosoda N, Hoshino SI. Arsenite inhibits mRNA deadenylation through proteolytic degradation of Tob and Pan3. Biochem Biophys Res Commun 2014; 455:323-31. [PMID: 25446091 DOI: 10.1016/j.bbrc.2014.11.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 11/07/2014] [Indexed: 01/24/2023]
Abstract
The poly(A) tail of mRNAs plays pivotal roles in the posttranscriptional control of gene expression at both translation and mRNA stability. Recent findings demonstrate that the poly(A) tail is globally stabilized by some stresses. However, the mechanism underlying this phenomenon has not been elucidated. Here, we show that arsenite-induced oxidative stress inhibits deadenylation of mRNA primarily through downregulation of Tob and Pan3, both of which mediate the recruitment of deadenylases to mRNA. Arsenite selectively induces the proteolytic degradation of Tob and Pan3, and siRNA-mediated knockdown of Tob and Pan3 recapitulates stabilization of the mRNA poly(A) tail observed during arsenite stress. Although arsenite also inhibits translation by activating the eIF2α kinase HRI, arsenite-induced mRNA stabilization can be observed under HRI-depleted conditions. These results highlight the essential role of Tob and Pan3 in the stress-induced global stabilization of mRNA.
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Affiliation(s)
- Ryota Yamagishi
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Nao Hosoda
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Shin-ichi Hoshino
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan.
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10
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Akiyama K, Noto H, Nishizawa O, Sugaya K, Yamagishi R, Kitazawa M, Tsuchida S. Effect of KMD-3213, an alpha1A-adrenoceptor antagonist, on the prostatic urethral pressure and blood pressure in male decerebrate dogs. Int J Urol 2001; 8:177-83. [PMID: 11260350 DOI: 10.1046/j.1442-2042.2001.00277.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND KMD-3213 is an alpha1A-adrenoceptor-selective antagonist currently being developed for the treatment of urinary outlet obstruction in patients with benign prostatic hyperplasia. In the present study, the uroselectivity of KMD-3213 was evaluated and compared with that of prazosin and tamsulosin in a decerebrate dog model. METHODS Intercollicular decerebration was carried out in male mongrel dogs under anesthesia. The inhibitory effects of intravenously and intraduodenally administered compounds on the increase in intraurethral pressure (IUP) induced by electrical stimulation of the hypogastric nerve were estimated. Systemic blood pressure was measured simultaneously. RESULTS The alpha1-antagonists tested produced a dose-dependent inhibition of the induced IUP response and decreased mean blood pressure (MBP). The ID50 of KMD-3213, tamsulosin and prazosin for IUP (dose required to inhibit the increase in IUP by 50%) was 3.15, 1.73 and 11.8 microg/kg i.v., respectively, and the ED20 for the hypotensive effect (dose required to reduce MBP by 20%) was 8.03, 0.59 and 2.46 microg/kg i.v., respectively. The data indicate that uroselectivity (ED20/ID50) of KMD-3213 is 12- and 7.5-fold higher than that of prazosin and tamsulosin, respectively. When the drugs were administered intraduodenally, KMD-3213 was sufficiently absorbed from the digestive tract and continued to demonstrate at least 3.8-fold higher uroselectivity than tamsulosin. CONCLUSION Based on these findings, KMD-3213 appears to be an effective orally active compound for decreasing urethral resistance during micturition that does not induce any negative cardiovascular effects in patients with benign prostatic hyperplasia.
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Affiliation(s)
- K Akiyama
- Central Research Laboratories, KISSEI Pharmaceutical Co. Ltd, Minamiazumi, Nagano, Japan.
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11
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Akiyama K, Hora M, Tatemichi S, Masuda N, Nakamura S, Yamagishi R, Kitazawa M. KMD-3213, a uroselective and long-acting alpha(1a)-adrenoceptor antagonist, tested in a novel rat model. J Pharmacol Exp Ther 1999; 291:81-91. [PMID: 10490890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
KMD-3213, an alpha(1a)-adrenoceptor (AR) antagonist, is under development for the treatment of urinary outlet obstruction in patients with benign prostatic hypertrophy. In the present study, we developed a rat model to investigate simply the effects of alpha(1)-AR antagonists on the intraurethral pressure (IUP) response to phenylephrine. Using this model, inhibitory effects of both i.v. and intraduodenally administered KMD-3213 on the IUP response were evaluated and compared to those of other reference compounds, including prazosin and tamsulosin. In addition, the hypotensive effects of these compounds were estimated to evaluate uroselectivity. Intravenously administered alpha(1)-AR antagonists tested, including KMD-3213, potently inhibited the IUP response in a dose-dependent manner. Although the higher doses of those compounds almost completely inhibited the IUP response, yohimbine failed to inhibit the response. When the in vivo potencies of those compounds on IUP response were correlated with their affinities for the human or animal recombinant alpha(1)-AR subtypes, alpha(1a)-AR gave the best correlation. In this model, KMD-3213 had greater uroselectivity than any other compounds examined, by both i.v. and intraduodenal routes. Moreover, 12, 18, and 24 h after the oral administration of KMD-3213, a dose-dependent inhibition of the IUP response was found, whereas the effect of tamsulosin disappeared at 18 h after the oral administration. These data indicate that KMD-3213 is a highly uroselective alpha(1)-AR antagonist with a longer duration of action. In addition, this model is useful for not only estimation of uroselectivity but also some part of the administration, distribution, metabolism, and excretion of many compounds to discover uroselective compounds.
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Affiliation(s)
- K Akiyama
- Central Research Laboratories, Kissei Pharmaceutical Co., Ltd., Kashiwabara, Hotaka, Minamiazumi, Nagano, Japan.
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Yamagishi R, Akiyama K, Nakamura S, Hora M, Masuda N, Matsuzawa A, Murata S, Ujiie A, Kurashina Y, Iizuka K, Kitazawa M. Effect of KMD-3213, an alpha 1a-adrenoceptor-selective antagonist, on the contractions of rabbit prostate and rabbit and rat aorta. Eur J Pharmacol 1996; 315:73-9. [PMID: 8960867 DOI: 10.1016/s0014-2999(96)00589-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
KMD-3213, (-)-(R)-1-(3-hydroxypropyl)-5-[2-[[2-[2-(2,2,2-trifluoroethoxy) phenoxy]ethyl]amino]propyl]indoline-7-carboxamide, a newly synthesized alpha 1-adrenoceptor antagonist, has been shown to have potent action toward, and to be selective for human cloned and native alpha 1-adrenoceptors. In the present study, we characterized the inhibitory effect of KMD-3213 on the phenylephrine (alpha 1-adrenoceptor-selective agonist)-induced contraction of rabbit prostate, rabbit thoracic aorta and rat thoracic aorta to functionally confirm the tissue selectivity of KMD-3213. The mean pA2 value for KMD-3213 for the inhibition of the rabbit prostatic contraction was 10.05, whereas the values for the rabbit and rat aortic contractions were 9.36 and 8.13, respectively. The order of mean pA2 values for the inhibition of the rabbit prostatic contraction was KMD-3213 > or = tamsulosin >> prazosin, whereas that for the rabbit and rat aortic contractions was tamsulosin > KMD-3213 > prazosin and tamsulosin > or = prazosin >> KMD-3213, respectively. KMD-3213 produced a sigmoidal inhibition curve for single-dose phenylephrine-induced contractions of rabbit prostate, whereas it produced a non-sigmoidal curve for that of rabbit aorta. KMD-3213 had no effect on isoproterenol-induced chronotropic action in guinea-pig atria, and 5-hydroxytryptamine-, histamine- and acetylcholine-mediated contractions of rabbit aorta. These results indicate that the potency of the inhibitory activity of KMD-3213 depends on the tissue subtype expression and that KMD-3213 preferentially antagonizes prostatic contraction.
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Affiliation(s)
- R Yamagishi
- Central Research Laboratories, Kissei Pharmaceutical Co., Ltd., Nagano, Japan
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13
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Yamagishi R, Ichihara T, Nagano G, Kamide R. [Measurement of superoxide dismutase activity in normal skin by electron spin resonance-spin trapping method]. Nihon Hifuka Gakkai Zasshi 1989; 99:163-6. [PMID: 2545959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Superoxide dismutase (SOD) activity in 20 skin specimens from healthy individuals measured by the electron spin resonance-spin trapping method was 7.08 U +/- 0.41 U/mg protein (mean +/- SE). This method may be useful in the determination of SOD, since it requires a shorter time (approx. 3 min) and a smaller amount of specimen (approx. 30 mg) than previously reported methods other than the EIA method.
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14
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Takahashi K, Yamagishi R, Sakuragawa N, Shimamoto M, Ohsawa T, Kita M. [Immuno turbidimetric assay of heparin cofactor II]. Rinsho Byori 1988; 36:947-51. [PMID: 3241422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Yamagishi R, Koide T, Sakuragawa N. Binding of heparin or dermatan sulfate to thrombin is essential for the sulfated polysaccharide-accelerated inhibition of thrombin by heparin cofactor II. FEBS Lett 1987; 225:109-12. [PMID: 3691797 DOI: 10.1016/0014-5793(87)81140-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heparin cofactor II (HC II) and thrombin were chemically modified with pyridoxal 5'-phosphate, and their effects on the inhibition of thrombin by HC II in the presence of heparin or dermatan sulfate were studied. The inhibition of thrombin by HC II was enhanced about 7000-fold in the presence of heparin or dermatan sulfate. However, this enhancement by heparin dwindled to 110- and 9.6-fold when the modified HC II and the modified thrombin, respectively, were substituted for native proteins. Essentially identical results were obtained from the experiments using dermatan sulfate. These results indicate that the binding of heparin or dermatan sulfate to both thrombin and HC II is required for the sulfated polysaccharide-dependent acceleration of the thrombin inhibition by HC II, and the binding to thrombin is more essential for the reaction.
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Affiliation(s)
- R Yamagishi
- Central Clinical Laboratory, Toyama Medical and Pharmaceutical University, Japan
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16
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Kazama Y, Niwa M, Yamagishi R, Takahashi K, Sakuragawa N, Koide T. Specificity of sulfated polysaccharides to accelerate the inhibition of activated protein C by protein C inhibitor. Thromb Res 1987; 48:179-85. [PMID: 2447665 DOI: 10.1016/0049-3848(87)90414-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The ability of various sulfated polysaccharides to activate protein C inhibitor (PCI) and the effect of molecular weight (Mr) and sulfur content of dextran sulfates were investigated. Besides dextran sulfate, highly sulfated polysaccharides such as chondroitin polysulfates 1 and 5, and pentosan polysulfate were more active than heparin in enhancing the activated protein C inhibition by PCI. The molecular weight and the sulfur content of dextran sulfate were critical for the second-order rate constant of the reaction and for the optimal concentration of the polysaccharide, respectively. These results suggest that the carboxyl groups of polysaccharides are not necessarily required, but some sulfate groups within polymers may play a critical role in the interaction with PCI.
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Affiliation(s)
- Y Kazama
- Central Clinical Laboratory, Toyama Medical and Pharmaceutical University, Japan
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17
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Sakuragawa N, Takahashi K, Sato S, Niwa M, Yamagishi R, Kazama Y. [Blood coagulation factors and glycosaminoglycans]. Rinsho Byori 1987; Spec No 73:134-41. [PMID: 3437528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Yoshida H, Tondokoro N, Asano Y, Mizusawa K, Yamagishi R, Horigome T, Sugano H. Studies on membrane proteins involved in ribosome binding on the rough endoplasmic reticulum. Ribophorins have no ribosome-binding activity. Biochem J 1987; 245:811-9. [PMID: 3663192 PMCID: PMC1148202 DOI: 10.1042/bj2450811] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A membrane protein fraction showing affinity for ribosomes was isolated from rat liver microsomes (microsomal fractions) in association with ribosomes by treatment of the microsomes with Emulgen 913 and then solubilized from the ribosomes with sodium deoxycholate. This protein fraction was separated into two fractions, glycoproteins, including ribophorins I and II, and non-glycoproteins, virtually free from ribophorins I and II, on concanavalin A-Sepharose columns. The two fractions were each reconstituted into liposomes to determine their ribosome-binding activities. The specific binding activity of the non-glycoprotein fraction was approx. 2.3-fold higher than that of the glycoprotein fraction. The recovery of ribosome-binding capacity of the two fractions was about 85% of the total binding capacity of the material applied to a concanavalin A-Sepharose column, and about 90% of it was found in the non-glycoprotein fraction. The affinity constants of the ribosomes for the reconstituted liposomes were somewhat higher than those for stripped rough microsomes. The mode of ribosome binding to the reconstituted liposomes was very similar to that to the stripped rough microsomes, in its sensitivity to proteolytic enzymes and its strong inhibition by increasing KCl concentration. These results support the idea that ribosome binding to rat liver microsomes is not directly mediated by ribophorins I and II, but that another unidentified membrane protein(s) plays a role in ribosome binding.
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Affiliation(s)
- H Yoshida
- Department of Biochemistry, Faculty of Science, Niigata University, Japan
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19
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Takahashi K, Niwa M, Yamagishi R, Sakuragawa N. [Regulation of blood coagulation by heparin and related proteins]. Rinsho Ketsueki 1987; 28:1094-101. [PMID: 3694818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Takahashi K, Yamagishi R, Niwa M, Sakuragawa N. [Analysis of heparin cofactor II]. Rinsho Byori 1987; Spec No 70:181-6. [PMID: 3302388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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21
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Yamagishi R, Niwa M, Sakuragawa N. Thrombin inhibitory activity of heparin cofactor II depends on the molecular weight and sulfate amount of dextran sulfate. Thromb Res 1986; 44:347-54. [PMID: 2432675 DOI: 10.1016/0049-3848(86)90009-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The effect of molecular weight and sulfate amount of sulfated polysaccharide on the thrombin inhibitory activity of heparin cofactor II was investigated by using various dextran sulfate fractions with different molecular weight and sulfur content. The activity of dextran sulfate fractions of each size increased as the sulfur content was increased from 9 to 18%, and the activity decreased in molecules below 10 kDa. The maximum second order rate constant of heparin cofactor II-thrombin reaction in the presence of the fractions of over-10 kDa and 18% sulfur was 2.7 X 10(8) M-1 min-1 that was almost same as in the presence of heparin or dermatan sulfate. On the other hand, dextran sulfate accelerated antithrombin III-thrombin reaction only about 40-fold less than heparin. These results indicate that a large molecular size and significant amount of sulfate groups are only essential in the acceleration of the thrombin inhibitory activity of heparin cofactor II, whereas a specific sequence of heparin is required to that of antithrombin III.
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22
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Kamide R, Sawada S, Yamagishi R, Mochizuki K. [Two cases of photosensitive drug eruption induced by afloqualone]. Nihon Hifuka Gakkai Zasshi 1986; 96:1253-7. [PMID: 2950260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Sakuragawa N, Maeda M, Niwa C, Kondoh K, Kazama Y, Niwa M, Yamagishi R, Satoh S, Kondoh S, Takahashi K. [Studies on the assay method of protein C and changes of vitamin K dependent coagulation factors including protein C in the cases with warfarin treatment]. Rinsho Byori 1986; 34:464-8. [PMID: 3755774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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24
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Sakuragawa N, Niwa M, Yamagishi R. Studies on the purification and characteristics of histidine-rich glycoprotein. Semin Thromb Hemost 1985; 11:384-6. [PMID: 4071064 DOI: 10.1055/s-2007-1004398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
HRG demonstrated a high affinity for heparin and could thus participate in the inhibition of the clotting mechanism. HRG had inhibitory effects on DS as well, as was observed from assaying HC II activity. This investigation will be continued to clarify the role of HRG, HC II, AT III, and heparin in the prevention of thrombi formation.
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Niwa M, Yamagishi R, Kondo S, Sakuragawa N, Koide T. Histidine-rich glycoprotein inhibits the antithrombin activity of heparin cofactor II in the presence of heparin or dermatan sulfate. Thromb Res 1985; 37:237-40. [PMID: 3838602 DOI: 10.1016/0049-3848(85)90051-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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26
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Yamagishi R, Niwa M, Kondo S, Sakuragawa N, Koide T. Purification and biological property of heparin cofactor II: activation of heparin cofactor II and antithrombin III by dextran sulfate and various glycosaminoglycans. Thromb Res 1984; 36:633-42. [PMID: 6084876 DOI: 10.1016/0049-3848(84)90202-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Heparin cofactor II (HC II) has been purified from human plasma by a modification of the method described by Tollefsen et al. (J. Biol. Chem., 257, 2162, 1982) and abilities of dextran sulfate and various glycosaminoglycans to activate the antithrombin activities of HC II and antithrombin III (AT III) were studied. By the purification method described here, highly purified HC II with the same specific activity as reported by Tollefsen et al. was obtained with a higher yield and in a shorter purification time. Heparin, dextran sulfate and chondroitin polysulfates 1 and 5 activated both HC II and AT III, while dermatan sulfate activated only HC II. Dextran sulfate was almost as active as heparin in the activation of HC II and AT III, indicating that in the interactions of heparin with HC II and AT III, sulfate groups of heparin are more important than carboxyl groups. When mixed with thrombin in the presence of dermatan sulfate, normal human plasma showed antithrombin activity which was not due to AT III but to HC II only. HC II did not inhibit factor Xa or plasmin in the presence of any glycosaminoglycans or dextran sulfate, suggesting that HC II would be a specific inhibitor of thrombin.
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