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Takeda H. Autoantibody Profiling Using Human Autoantigen Protein Array and AlphaScreen. Methods Mol Biol 2024; 2766:107-128. [PMID: 38270871 DOI: 10.1007/978-1-0716-3682-4_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Autoantibodies that recognize self-antigens are believed to have a close relationship with diseases such as autoimmune diseases, cancer, and lifestyle diseases. Analysis of autoantibodies is essential for investigating pathology mechanisms, diagnosis, and therapeutics of these diseases. We developed an autoantibody profiling assay using a cell-free synthesized protein array and high-throughput screening technology. Our assay system can sensitively detect interaction between recombinant antigen protein and autoantibody and efficiently analyze autoantibody profiling in patients' sera.
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Affiliation(s)
- Hiroyuki Takeda
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan.
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2
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Takeda H, Ozawa T, Zenke H, Ohnuki Y, Umeda Y, Zhou W, Tomoda H, Takechi A, Narita K, Shimizu T, Miyakawa T, Ito Y, Sawasaki T. VNAR development through antigen immunization of Japanese topeshark ( Hemitriakis japanica). Front Bioeng Biotechnol 2023; 11:1265582. [PMID: 37771574 PMCID: PMC10522858 DOI: 10.3389/fbioe.2023.1265582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 08/28/2023] [Indexed: 09/30/2023] Open
Abstract
The VNAR (Variable New Antigen Receptor) is the smallest single-domain antibody derived from the variable domain of IgNAR of cartilaginous fishes. Despite its biomedical and diagnostic potential, research on VNAR has been limited due to the difficulties in obtaining and maintaining immune animals and the lack of research tools. In this study, we investigated the Japanese topeshark as a promising immune animal for the development of VNAR. This shark is an underutilized fishery resource readily available in East Asia coastal waters and can be safely handled without sharp teeth or venomous stingers. The administration of Venus fluorescent protein to Japanese topesharks markedly increased antigen-specific IgM and IgNAR antibodies in the blood. Both the phage-display library and the yeast-display library were constructed using RNA from immunized shark splenocytes. Each library was enriched by biopanning, and multiple antigen-specific VNARs were acquired. The obtained antibodies had affinities of 1 × 10-8 M order and showed high plasticity, retaining their binding activity even after high-temperature or reducing-agent treatment. The dissociation rate of a low-affinity VNAR was significantly improved via dimerization. These results demonstrate the potential utility of the Japanese topeshark for the development of VNAR. Furthermore, we conducted deep sequencing analysis to reveal the quantitative changes in the CDR3-coding sequences, revealing distinct enrichment bias between libraries. VNARs that were primarily enriched in the phage display had CDR3 coding sequences with fewer E. coli rare codons, suggesting translation machinery on the selection and enrichment process during biopanning.
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Affiliation(s)
| | - Tatsuhiko Ozawa
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan
- Center for Advanced Antibody Drug Development, University of Toyama, Toyama, Japan
| | - Hiroki Zenke
- Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Yoh Ohnuki
- Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yuri Umeda
- Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Wei Zhou
- Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Honoka Tomoda
- Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Iyo, Japan
| | - Akihiko Takechi
- Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Iyo, Japan
| | - Kimiyoshi Narita
- Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Iyo, Japan
| | - Takaaki Shimizu
- Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Iyo, Japan
| | - Takuya Miyakawa
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yuji Ito
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Japan
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3
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Yamanaka S, Furihata H, Yanagihara Y, Taya A, Nagasaka T, Usui M, Nagaoka K, Shoya Y, Nishino K, Yoshida S, Kosako H, Tanokura M, Miyakawa T, Imai Y, Shibata N, Sawasaki T. Lenalidomide derivatives and proteolysis-targeting chimeras for controlling neosubstrate degradation. Nat Commun 2023; 14:4683. [PMID: 37596276 PMCID: PMC10439208 DOI: 10.1038/s41467-023-40385-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 07/21/2023] [Indexed: 08/20/2023] Open
Abstract
Lenalidomide, an immunomodulatory drug (IMiD), is commonly used as a first-line therapy in many haematological cancers, such as multiple myeloma (MM) and 5q myelodysplastic syndromes (5q MDS), and it functions as a molecular glue for the protein degradation of neosubstrates by CRL4CRBN. Proteolysis-targeting chimeras (PROTACs) using IMiDs with a target protein binder also induce the degradation of target proteins. The targeted protein degradation (TPD) of neosubstrates is crucial for IMiD therapy. However, current IMiDs and IMiD-based PROTACs also break down neosubstrates involved in embryonic development and disease progression. Here, we show that 6-position modifications of lenalidomide are essential for controlling neosubstrate selectivity; 6-fluoro lenalidomide induced the selective degradation of IKZF1, IKZF3, and CK1α, which are involved in anti-haematological cancer activity, and showed stronger anti-proliferative effects on MM and 5q MDS cell lines than lenalidomide. PROTACs using these lenalidomide derivatives for BET proteins induce the selective degradation of BET proteins with the same neosubstrate selectivity. PROTACs also exert anti-proliferative effects in all examined cell lines. Thus, 6-position-modified lenalidomide is a key molecule for selective TPD using thalidomide derivatives and PROTACs.
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Affiliation(s)
- Satoshi Yamanaka
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
- Division of Proteo-Interactome, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Hirotake Furihata
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Yuta Yanagihara
- Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Toon, 791-0295, Japan
| | - Akihito Taya
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Takato Nagasaka
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Mai Usui
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Koya Nagaoka
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Yuki Shoya
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Kohei Nishino
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan
| | - Shuhei Yoshida
- Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Toon, 791-0295, Japan
| | - Hidetaka Kosako
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Takuya Miyakawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
- Graduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan
| | - Yuuki Imai
- Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Toon, 791-0295, Japan
| | - Norio Shibata
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Tatsuya Sawasaki
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
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4
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Yamada K, Soga F, Tokunaga S, Nagaoka H, Ozawa T, Kishi H, Takashima E, Sawasaki T. GATS tag system is compatible with biotin labelling methods for protein analysis. Sci Rep 2023; 13:10243. [PMID: 37353572 PMCID: PMC10290147 DOI: 10.1038/s41598-023-36858-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 06/11/2023] [Indexed: 06/25/2023] Open
Abstract
Polypeptide tags and biotin labelling technologies are widely used for protein analyses in biochemistry and cell biology. However, many peptide tag epitopes contain lysine residues (or amino acids) that are masked after biotinylation. Here, we propose the GATS tag system without a lysine residue and with high sensitivity and low non-specific binding using a rabbit monoclonal antibody against Plasmodium falciparum glycosylphosphatidylinositol (GPI)-anchored micronemal antigen (PfGAMA). From 14 monoclonal clones, an Ra3 clone was selected as it recognized an epitope-TLSVGVQNTF-without a lysine residue; this antibody and epitope tag set was called the GATS tag system. Surface plasmon resonance analysis showed that the tag system had a high affinity of 8.71 × 10-9 M. GATS tag indicated a very low background with remarkably high sensitivity and specificity in immunoblotting using the lysates of mammalian cells. It also showed a high sensitivity for immunoprecipitation and immunostaining of cultured human cells. The tag system was highly sensitive in both biotin labelling methods for proteins using NHS-Sulfo-biotin and BioID (proximity-dependent biotin identification) in the human cells, as opposed to a commercially available tag system having lysine residues, which showed reduced sensitivity. These results showed that the GATS tag system is suitable for methods such as BioID involving labelling lysine residues.
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Affiliation(s)
- Kohdai Yamada
- Division of Cell-Free Life Science, Proteo-Science Center, Ehime University, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan
| | - Fumiya Soga
- Division of Cell-Free Life Science, Proteo-Science Center, Ehime University, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan
| | - Soh Tokunaga
- Division of Cell-Free Life Science, Proteo-Science Center, Ehime University, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan
| | - Hikaru Nagaoka
- Division of Malaria Research, Proteo-Science Center, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan
| | - Tatsuhiko Ozawa
- Department of Immunology, Faculty of Medicine, Academic Assembly, Advanced Antibody Drug Development Center, University of Toyama, Toyama, 930-0194, Japan
| | - Hiroyuki Kishi
- Department of Immunology, Faculty of Medicine, Academic Assembly, Advanced Antibody Drug Development Center, University of Toyama, Toyama, 930-0194, Japan
| | - Eizo Takashima
- Division of Malaria Research, Proteo-Science Center, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan
| | - Tatsuya Sawasaki
- Division of Cell-Free Life Science, Proteo-Science Center, Ehime University, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan.
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5
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Nozawa A, Miyazaki R, Aoki Y, Hirose R, Hori R, Muramatsu C, Shigematsu Y, Nemoto K, Hasegawa Y, Fujita K, Miyakawa T, Tanokura M, Suzuki S, Sawasaki T. Identification of a new gibberellin receptor agonist, diphegaractin, by a cell-free chemical screening system. Commun Biol 2023; 6:448. [PMID: 37160969 PMCID: PMC10170162 DOI: 10.1038/s42003-023-04760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/24/2023] [Indexed: 05/11/2023] Open
Abstract
Gibberellin (GA) is a phytohormone that regulates various developmental processes during the plant life cycle. In this study, we identify a new GA agonist, diphegaractin, using a wheat cell-free based drug screening system with grape GA receptor. A GA-dependent interaction assay system using GA receptors and DELLA proteins from Vitis vinifera was constructed using AlphaScreen technology and cell-free produced proteins. From the chemical compound library, diphegaractin was found to enhance the interactions between GA receptors and DELLA proteins from grape in vitro. In grapes, we found that diphegaractin induces elongation of the bunch and increases the sugar concentration of grape berries. Furthermore, diphegaractin shows GA-like activity, including promotion of root elongation in lettuce and Arabidopsis, as well as reducing peel pigmentation and suppressing peel puffing in citrus fruit. To the best of our knowledge, this study is the first to successfully identify a GA receptor agonist showing GA-like activity in agricultural plants using an in vitro molecular-targeted drug screening system.
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Affiliation(s)
- Akira Nozawa
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Ryoko Miyazaki
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Yoshinao Aoki
- The Institute of Enology and Viticulture, University of Yamanashi, 1-13-1, Kitashin, Kofu, Yamanashi, 400-0005, Japan
| | - Reina Hirose
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Ryosuke Hori
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Chihiro Muramatsu
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Yukinori Shigematsu
- Fruit Tree Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, 1618 Shimo-idai, Matsuyama, Ehime, 791-0112, Japan
| | - Keiichirou Nemoto
- Iwate Biotechnology Research Center, 22-174-4 Narita, Kitakami, Iwate, 024-0003, Japan
| | - Yoshinori Hasegawa
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba, 292-0818, Japan
| | - Keiko Fujita
- Faculty of Bioresource Sciences, Prefectural University of Hiroshima, 5562 Nanatsuka-cho, Shobara, Hiroshima, 727-0023, Japan
| | - Takuya Miyakawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
- Graduate School of Biostudies, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Shunji Suzuki
- The Institute of Enology and Viticulture, University of Yamanashi, 1-13-1, Kitashin, Kofu, Yamanashi, 400-0005, Japan
| | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.
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6
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Valea I, Motegi A, Kawamura N, Kawamoto K, Miyao A, Ozawa R, Takabayashi J, Gomi K, Nemoto K, Nozawa A, Sawasaki T, Shinya T, Galis I, Miyamoto K, Nojiri H, Okada K. The rice wound-inducible transcription factor RERJ1 sharing same signal transduction pathway with OsMYC2 is necessary for defense response to herbivory and bacterial blight. PLANT MOLECULAR BIOLOGY 2022; 109:651-666. [PMID: 34476681 DOI: 10.1007/s11103-021-01186-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
This study describes biological functions of the bHLH transcription factor RERJ1 involved in the jasmonate response and the related defense-associated metabolic pathways in rice, with particular focus on deciphering the regulatory mechanisms underlying stress-induced volatile emission and herbivory resistance. RERJ1 is rapidly and drastically induced by wounding and jasmonate treatment but its biological function remains unknown as yet. Here we provide evidence of the biological function of RERJ1 in plant defense, specifically in response to herbivory and pathogen attack, and offer insights into the RERJ1-mediated regulation of metabolic pathways of specialized defense compounds, such as monoterpene linalool, in possible collaboration with OsMYC2-a well-known master regulator in jasmonate signaling. In rice (Oryza sativa L.), the basic helix-loop-helix (bHLH) family transcription factor RERJ1 is induced under environmental stresses, such as wounding and drought, which are closely linked to jasmonate (JA) accumulation. Here, we investigated the biological function of RERJ1 in response to biotic stresses, such as herbivory and pathogen infection, using an RERJ1-defective mutant. Transcriptome analysis of the rerj1-Tos17 mutant revealed that RERJ1 regulated the expression of a typical family of conserved JA-responsive genes (e.g., terpene synthases, proteinase inhibitors, and jasmonate ZIM domain proteins). Upon exposure to armyworm attack, the rerj1-Tos17 mutant exhibited more severe damage than the wildtype, and significant weight gain of the larvae fed on the mutant was observed. Upon Xanthomonas oryzae infection, the rerj1-Tos17 mutant developed more severe symptoms than the wildtype. Among RERJ1-regulated terpene synthases, linalool synthase expression was markedly disrupted and linalool emission after wounding was significantly decreased in the rerj1-Tos17 mutant. RERJ1 appears to interact with OsMYC2-a master regulator of JA signaling-and many OsJAZ proteins, although no obvious epistatic interaction was detected between them at the transcriptional level. These results indicate that RERJ1 is involved in the transcriptional induction of JA-mediated stress-responsive genes via physical association with OsMYC2 and mediates defense against herbivory and bacterial infection through JA signaling.
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Affiliation(s)
- Ioana Valea
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Atsushi Motegi
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Naoko Kawamura
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Koichi Kawamoto
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Akio Miyao
- Institute of Crop Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8518, Japan
| | - Rika Ozawa
- Center for Ecological Research, Kyoto University, Otsu, Shiga, 520-2113, Japan
| | - Junji Takabayashi
- Center for Ecological Research, Kyoto University, Otsu, Shiga, 520-2113, Japan
| | - Kenji Gomi
- Graduate School of Agriculture, Kagawa University, Kita-gun, Kagawa, 761-0795, Japan
| | - Keiichirou Nemoto
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, 790-8577, Japan
| | - Akira Nozawa
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, 790-8577, Japan
| | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, 790-8577, Japan
| | - Tomonori Shinya
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046, Japan
| | - Ivan Galis
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046, Japan
| | - Koji Miyamoto
- Graduate School of Science and Engineering, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | - Hideaki Nojiri
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Kazunori Okada
- Agro-Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan.
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7
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Development of Parallel Reaction Monitoring Mass Spectrometry Assay for the Detection of Human Norovirus Major Capsid Protein. Viruses 2022; 14:v14071416. [PMID: 35891395 PMCID: PMC9319599 DOI: 10.3390/v14071416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 02/05/2023] Open
Abstract
Human Norwalk viruses (HuNoVs), the most common etiological agents of acute gastroenteritis, are genetically diverse RNA viruses that frequently cause mass food poisoning internationally. Although nucleic acid detection methods, such as reverse transcription-quantitative polymerase chain reaction (RT-qPCR), are the gold standard for the diagnosis of norovirus infection, alternative methods are needed for the specific and sensitive viral protein detection for rapid diagnosis and surveillance. In this study, we developed a robust and high-throughput targeted proteomic assay workflow to directly detect the VP1 major capsid protein of HuNoVs. A parallel reaction monitoring (PRM) assay using a high-resolution mass spectrometer was used to detect representative peptides derived from VP1 in six different HuNoV genotypes. An optimized protocol using synthesized heavy isotope-labeled peptides as internal standards was also used to simultaneously genotype and quantify the VP1 protein in human stool specimens. This method is expected to become a new tool for studying the molecular epidemiology of HuNoV and to shed new light on targeted proteomics in clinical practice.
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Shioya R, Yamada K, Kido K, Takahashi H, Nozawa A, Kosako H, Sawasaki T. A simple method for labeling proteins and antibodies with biotin using the proximity biotinylation enzyme TurboID. Biochem Biophys Res Commun 2022; 592:54-59. [DOI: 10.1016/j.bbrc.2021.12.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 12/28/2021] [Indexed: 11/16/2022]
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9
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Yamanaka S, Horiuchi Y, Matsuoka S, Kido K, Nishino K, Maeno M, Shibata N, Kosako H, Sawasaki T. A proximity biotinylation-based approach to identify protein-E3 ligase interactions induced by PROTACs and molecular glues. Nat Commun 2022; 13:183. [PMID: 35013300 PMCID: PMC8748630 DOI: 10.1038/s41467-021-27818-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 12/02/2021] [Indexed: 12/24/2022] Open
Abstract
Proteolysis-targeting chimaeras (PROTACs) as well as molecular glues such as immunomodulatory drugs (IMiDs) and indisulam are drugs that induce interactions between substrate proteins and an E3 ubiquitin ligases for targeted protein degradation. Here, we develop a workflow based on proximity-dependent biotinylation by AirID to identify drug-induced neo-substrates of the E3 ligase cereblon (CRBN). Using AirID-CRBN, we detect IMiD-dependent biotinylation of CRBN neo-substrates in vitro and identify biotinylated peptides of well-known neo-substrates by mass spectrometry with high specificity and selectivity. Additional analyses reveal ZMYM2 and ZMYM2-FGFR1 fusion protein-responsible for the 8p11 syndrome involved in acute myeloid leukaemia-as CRBN neo-substrates. Furthermore, AirID-DCAF15 and AirID-CRBN biotinylate neo-substrates targeted by indisulam and PROTACs, respectively, suggesting that this approach has the potential to serve as a general strategy for characterizing drug-inducible protein-protein interactions in cells.
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Affiliation(s)
- Satoshi Yamanaka
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Yuto Horiuchi
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Saya Matsuoka
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Kohki Kido
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan
| | - Kohei Nishino
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan
| | - Mayaka Maeno
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Nagoya, 466-8555, Japan
| | - Hidetaka Kosako
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, 770-8503, Japan
| | - Tatsuya Sawasaki
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
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10
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A comprehensive interaction study provides a potential domain interaction network of human death domain superfamily proteins. Cell Death Differ 2021; 28:2991-3008. [PMID: 33993194 PMCID: PMC8564539 DOI: 10.1038/s41418-021-00796-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 02/04/2023] Open
Abstract
Human death domain superfamily proteins (DDSPs) play important roles in many signaling pathways involved in cell death and inflammation. Disruption or constitutive activation of these DDSP interactions due to inherited gene mutations is closely related to immunodeficiency and/or autoinflammatory diseases; however, responsible gene mutations have not been found in phenotypical diagnosis of these diseases. In this study, we comprehensively investigated the interactions of death-fold domains to explore the signaling network mediated by human DDSPs. We obtained 116 domains of DDSPs and conducted a domain-domain interaction assay of 13,924 reactions in duplicate using amplified luminescent proximity homogeneous assay. The data were mostly consistent with previously reported interactions. We also found new possible interactions, including an interaction between the caspase recruitment domain (CARD) of CARD10 and the tandem CARD-CARD domain of NOD2, which was confirmed by reciprocal co-immunoprecipitation. This study enables prediction of the interaction network of human DDSPs, sheds light on pathogenic mechanisms, and will facilitate identification of drug targets for treatment of immunodeficiency and autoinflammatory diseases.
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11
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Nishiyama K, Maekawa M, Nakagita T, Nakayama J, Kiyoi T, Chosei M, Murakami A, Kamei Y, Takeda H, Takada Y, Higashiyama S. CNKSR1 serves as a scaffold to activate an EGFR phosphatase via exclusive interaction with RhoB-GTP. Life Sci Alliance 2021; 4:4/9/e202101095. [PMID: 34187934 PMCID: PMC8321701 DOI: 10.26508/lsa.202101095] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/15/2022] Open
Abstract
CNKSR1 functions as a scaffold protein for activation of an EGFR phosphatase, PTPRH, at the plasma membrane through the exclusive interaction with RhoB-GTP which is constitutively degraded by the CUL3/KCTD10 E3 complex. Epidermal growth factor receptor (EGFR) and human EGFR 2 (HER2) phosphorylation drives HER2-positive breast cancer cell proliferation. Enforced activation of phosphatases for those receptors could be a therapeutic option for HER2-positive breast cancers. Here, we report that degradation of an endosomal small GTPase, RhoB, by the ubiquitin ligase complex cullin-3 (CUL3)/KCTD10 is essential for both EGFR and HER2 phosphorylation in HER2-positive breast cancer cells. Using human protein arrays produced in a wheat cell-free protein synthesis system, RhoB-GTP, and protein tyrosine phosphatase receptor type H (PTPRH) were identified as interacting proteins of connector enhancer of kinase suppressor of Ras1 (CNKSR1). Mechanistically, constitutive degradation of RhoB, which is mediated by the CUL3/KCTD10 E3 complex, enabled CNKSR1 to interact with PTPRH at the plasma membrane resulting in inactivation of EGFR phosphatase activity. Depletion of CUL3 or KCTD10 led to the accumulation of RhoB-GTP at the plasma membrane followed by its interaction with CNKSR1, which released activated PTPRH from CNKSR1. This study suggests a mechanism of PTPRH activation through the exclusive binding of RhoB-GTP to CNKSR1.
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Affiliation(s)
- Kanako Nishiyama
- Department of Hepato-Biliary-Pancreatic Surgery and Breast Surgery, Ehime University Graduate School of Medicine, Toon, Japan.,Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Japan
| | - Masashi Maekawa
- Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Japan .,Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| | - Tomoya Nakagita
- Division of Proteo-Drug-Discovery Sciences, Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Jun Nakayama
- Division of Cellular Signaling, National Cancer Center Research Institute, Chuo-ku, Japan
| | - Takeshi Kiyoi
- Division of Analytical Bio-medicine, Advanced Research Support Center, Ehime University, Toon, Japan
| | - Mami Chosei
- Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| | - Akari Murakami
- Department of Hepato-Biliary-Pancreatic Surgery and Breast Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Yoshiaki Kamei
- Department of Hepato-Biliary-Pancreatic Surgery and Breast Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hiroyuki Takeda
- Division of Proteo-Drug-Discovery Sciences, Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Yasutsugu Takada
- Department of Hepato-Biliary-Pancreatic Surgery and Breast Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Shigeki Higashiyama
- Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Japan .,Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan.,Department of Molecular and Cellular Biology, Osaka International Cancer Institute, Chuo-ku, Osaka, Japan
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12
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Yamanaka S, Murai H, Saito D, Abe G, Tokunaga E, Iwasaki T, Takahashi H, Takeda H, Suzuki T, Shibata N, Tamura K, Sawasaki T. Thalidomide and its metabolite 5-hydroxythalidomide induce teratogenicity via the cereblon neosubstrate PLZF. EMBO J 2021; 40:e105375. [PMID: 33470442 PMCID: PMC7883055 DOI: 10.15252/embj.2020105375] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/17/2020] [Accepted: 11/30/2020] [Indexed: 12/17/2022] Open
Abstract
Thalidomide causes teratogenic effects by inducing protein degradation via cereblon (CRBN)-containing ubiquitin ligase and modification of its substrate specificity. Human P450 cytochromes convert thalidomide into two monohydroxylated metabolites that are considered to contribute to thalidomide effects, through mechanisms that remain unclear. Here, we report that promyelocytic leukaemia zinc finger (PLZF)/ZBTB16 is a CRBN target protein whose degradation is involved in thalidomide- and 5-hydroxythalidomide-induced teratogenicity. Using a human transcription factor protein array produced in a wheat cell-free protein synthesis system, PLZF was identified as a thalidomide-dependent CRBN substrate. PLZF is degraded by the ubiquitin ligase CRL4CRBN in complex with thalidomide, its derivatives or 5-hydroxythalidomide in a manner dependent on the conserved first and third zinc finger domains of PLZF. Surprisingly, thalidomide and 5-hydroxythalidomide confer distinctly different substrate specificities to mouse and chicken CRBN, and both compounds cause teratogenic phenotypes in chicken embryos. Consistently, knockdown of Plzf induces short bone formation in chicken limbs. Most importantly, degradation of PLZF protein, but not of the known thalidomide-dependent CRBN substrate SALL4, was induced by thalidomide or 5-hydroxythalidomide treatment in chicken embryos. Furthermore, PLZF overexpression partially rescued the thalidomide-induced phenotypes. Our findings implicate PLZF as an important thalidomide-induced CRBN neosubstrate involved in thalidomide teratogenicity.
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Affiliation(s)
- Satoshi Yamanaka
- Division of Cell‐Free SciencesProteo‐Science CenterEhime UniversityMatsuyamaJapan
| | - Hidetaka Murai
- Department of Ecological Developmental Adaptability Life SciencesGraduate School of Life SciencesTohoku UniversitySendaiJapan
| | - Daisuke Saito
- Department of Ecological Developmental Adaptability Life SciencesGraduate School of Life SciencesTohoku UniversitySendaiJapan
- Present address:
Department of BiologyFaculty of SciencesKyushu UniversityFukuokaJapan
| | - Gembu Abe
- Department of Ecological Developmental Adaptability Life SciencesGraduate School of Life SciencesTohoku UniversitySendaiJapan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyNagoyaJapan
| | - Takahiro Iwasaki
- Division of Proteo‐Drug‐Discovery SciencesProteo‐Science CenterEhime UniversityMatsuyamaJapan
| | - Hirotaka Takahashi
- Division of Cell‐Free SciencesProteo‐Science CenterEhime UniversityMatsuyamaJapan
| | - Hiroyuki Takeda
- Division of Proteo‐Drug‐Discovery SciencesProteo‐Science CenterEhime UniversityMatsuyamaJapan
| | - Takayuki Suzuki
- Avian Bioscience Research CenterGraduate School of Bioagricultural SciencesNagoya UniversityNagoyaJapan
| | - Norio Shibata
- Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyNagoyaJapan
| | - Koji Tamura
- Department of Ecological Developmental Adaptability Life SciencesGraduate School of Life SciencesTohoku UniversitySendaiJapan
| | - Tatsuya Sawasaki
- Division of Cell‐Free SciencesProteo‐Science CenterEhime UniversityMatsuyamaJapan
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13
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An IMiD-induced SALL4 degron system for selective degradation of target proteins. Commun Biol 2020; 3:515. [PMID: 32948804 PMCID: PMC7501283 DOI: 10.1038/s42003-020-01240-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/31/2020] [Indexed: 12/20/2022] Open
Abstract
Regulating the amount of proteins in living cells is a powerful approach for understanding the functions of the proteins. Immunomodulatory drugs (IMiDs) induce the degradation of neosubstrates by interacting with celebron (CRBN) in the cullin E3 ubiquitin ligase complex (CRL4CRBN). Here, we developed the IMiD-dependent Sal-like protein 4 (SALL4) degron (S4D) system for chemical protein knockdown. In transient assays, an N- or C-terminal S4D tag induced the degradation of proteins localized to various subcellular compartments, including the plasma membrane. The activity of luciferase-S4D was reduced by 90% within 3 h of IMiD treatment. IMiD treatment reduced the expression of endogenous S4D-fused RelA and IκBα in knock-in (KI) experiments. Interestingly, the IκBα knockdown suggested that there may be another, unknown mechanism for RelA translocation to the nucleus. Furthermore, 5-hydroxythalidomide as a thalidomide metabolite specifically degradated S4D-tagged protein. These results indicate that the S4D system is a useful tool for cellular biology.
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14
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Furihata H, Yamanaka S, Honda T, Miyauchi Y, Asano A, Shibata N, Tanokura M, Sawasaki T, Miyakawa T. Structural bases of IMiD selectivity that emerges by 5-hydroxythalidomide. Nat Commun 2020; 11:4578. [PMID: 32929090 PMCID: PMC7490372 DOI: 10.1038/s41467-020-18488-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/25/2020] [Indexed: 01/31/2023] Open
Abstract
Thalidomide and its derivatives exert not only therapeutic effects as immunomodulatory drugs (IMiDs) but also adverse effects such as teratogenicity, which are due in part to different C2H2 zinc-finger (ZF) transcription factors, IKZF1 (or IKZF3) and SALL4, respectively. Here, we report the structural bases for the SALL4-specific proteasomal degradation induced by 5-hydroxythalidomide, a primary thalidomide metabolite generated by the enzymatic activity of cytochrome P450 isozymes, through the interaction with cereblon (CRBN). The crystal structure of the metabolite-mediated human SALL4-CRBN complex and mutagenesis studies elucidate the complex formation enhanced by the interaction between CRBN and an additional hydroxy group of (S)-5-hydroxythalidomide and the variation in the second residue of β-hairpin structure that underlies the C2H2 ZF-type neo-morphic substrate (neosubstrate) selectivity of 5-hydroxythalidomide. These findings deepen our understanding of the pharmaceutical action of IMiDs and provide structural evidence that the glue-type E3 ligase modulators cause altered neosubstrate specificities through their metabolism.
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Affiliation(s)
- Hirotake Furihata
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Satoshi Yamanaka
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Toshiaki Honda
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Aichi, 466-8555, Japan
| | - Yumiko Miyauchi
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Atsuko Asano
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Aichi, 466-8555, Japan
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.
| | - Takuya Miyakawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
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15
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Kögler LM, Stichel J, Beck-Sickinger AG. Structural investigations of cell-free expressed G protein-coupled receptors. Biol Chem 2020; 401:97-116. [PMID: 31539345 DOI: 10.1515/hsz-2019-0292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/02/2019] [Indexed: 12/11/2022]
Abstract
G protein-coupled receptors (GPCRs) are of great pharmaceutical interest and about 35% of the commercial drugs target these proteins. Still there is huge potential left in finding molecules that target new GPCRs or that modulate GPCRs differentially. For a rational drug design, it is important to understand the structure, binding and activation of the protein of interest. Structural investigations of GPCRs remain challenging, although huge progress has been made in the last 20 years, especially in the generation of crystal structures of GPCRs. This is mostly caused by issues with the expression yield, purity or labeling. Cell-free protein synthesis (CFPS) is an efficient alternative for recombinant expression systems that can potentially address many of these problems. In this article the use of CFPS for structural investigations of GPCRs is reviewed. We compare different CFPS systems, including the cellular basis and reaction configurations, and strategies for an efficient solubilization. Next, we highlight recent advances in the structural investigation of cell-free expressed GPCRs, with special emphasis on the role of photo-crosslinking approaches to investigate ligand binding sites on GPCRs.
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Affiliation(s)
- Lisa Maria Kögler
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
| | - Jan Stichel
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
| | - Annette G Beck-Sickinger
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
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16
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Kido K, Yamanaka S, Nakano S, Motani K, Shinohara S, Nozawa A, Kosako H, Ito S, Sawasaki T. AirID, a novel proximity biotinylation enzyme, for analysis of protein-protein interactions. eLife 2020; 9:54983. [PMID: 32391793 PMCID: PMC7302878 DOI: 10.7554/elife.54983] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/07/2020] [Indexed: 12/21/2022] Open
Abstract
Proximity biotinylation based on Escherichia coli BirA enzymes such as BioID (BirA*) and TurboID is a key technology for identifying proteins that interact with a target protein in a cell or organism. However, there have been some improvements in the enzymes that are used for that purpose. Here, we demonstrate a novel BirA enzyme, AirID (ancestral BirA for proximity-dependent biotin identification), which was designed de novo using an ancestral enzyme reconstruction algorithm and metagenome data. AirID-fusion proteins such as AirID-p53 or AirID-IκBα indicated biotinylation of MDM2 or RelA, respectively, in vitro and in cells, respectively. AirID-CRBN showed the pomalidomide-dependent biotinylation of IKZF1 and SALL4 in vitro. AirID-CRBN biotinylated the endogenous CUL4 and RBX1 in the CRL4CRBN complex based on the streptavidin pull-down assay. LC-MS/MS analysis of cells that were stably expressing AirID-IκBα showed top-level biotinylation of RelA proteins. These results indicate that AirID is a novel enzyme for analyzing protein–protein interactions. Proteins in a cell need to interact with each other to perform the many tasks required for organisms to thrive. A technique called proximity biotinylation helps scientists to pinpoint the identity of the proteins that partner together. It relies on attaching an enzyme (either BioID or TurboID) to a protein of interest; when a partner protein comes in close contact with this construct, the enzyme can attach a chemical tag called biotin to it. The tagged proteins can then be identified, revealing which molecules interact with the protein of interest. Although BioID and TurboID are useful tools, they have some limitations. Experiments using BioID take more than 16 hours to complete and require high levels of biotin to be added to the cells. TurboID is more active than BioID and is able to label proteins within ten minutes. However, under certain conditions, it is also more likely to be toxic for the cell, or to make mistakes and tag proteins that do not interact with the protein of interest. To address these issues, Kido et al. developed AirID, a new enzyme for proximity biotinylation. Experiments were then conducted to test how well AirID would perform, using proteins of interest whose partners were already known. These confirm that AirID was able to label partner proteins in human cells; compared with TurboID, it was also less likely to mistakenly tag non-partners or to kill the cells, even over long periods. The results by Kido et al. demonstrate that AirID is suitable for proximity biotinylation experiments in cells. Unlike BioID and TurboID, the enzyme may also have the potential to be used for long-lasting experiments in living organisms, since it is less toxic for cells over time.
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Affiliation(s)
- Kohki Kido
- Division of Cell-Free Life Science, Proteo-Science Center, Matsuyama, Japan
| | - Satoshi Yamanaka
- Division of Cell-Free Life Science, Proteo-Science Center, Matsuyama, Japan
| | - Shogo Nakano
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan
| | - Kou Motani
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, Japan
| | - Souta Shinohara
- Division of Cell-Free Life Science, Proteo-Science Center, Matsuyama, Japan
| | - Akira Nozawa
- Division of Cell-Free Life Science, Proteo-Science Center, Matsuyama, Japan
| | - Hidetaka Kosako
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, Japan
| | - Sohei Ito
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan
| | - Tatsuya Sawasaki
- Division of Cell-Free Life Science, Proteo-Science Center, Matsuyama, Japan
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17
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Miyoshi S, Tokunaga S, Ozawa T, Takeda H, Aono M, Miyoshi T, Kishi H, Muraguchi A, Shimizu SI, Nozawa A, Sawasaki T. Production of a rabbit monoclonal antibody for highly sensitive detection of citrus mosaic virus and related viruses. PLoS One 2020; 15:e0229196. [PMID: 32294099 PMCID: PMC7159214 DOI: 10.1371/journal.pone.0229196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/31/2020] [Indexed: 11/22/2022] Open
Abstract
Citrus mosaic virus (CiMV) is one of the causal viruses of citrus mosaic disease in satsuma mandarins (Citrus unshiu). Prompt detection of trees infected with citrus mosaic disease is important for preventing the spread of this disease. Although rabbit monoclonal antibodies (mAbs) exhibit high specificity and affinity, their applicability is limited by technical difficulties associated with the hybridoma-based technology used for raising these mAbs. Here, we demonstrate a feasible CiMV detection system using a specific rabbit mAb against CiMV coat protein. A conserved peptide fragment of the small subunit of CiMV coat protein was designed and used to immunize rabbits. Antigen-specific antibody-producing cells were identified by the immunospot array assay on a chip method. After cloning of variable regions in heavy or light chain by RT-PCR from these cells, a gene set of 33 mAbs was constructed and these mAbs were produced using Expi293F cells. Screening with the AlphaScreen system revealed eight mAbs exhibiting strong interaction with the antigen peptide. From subsequent sequence analysis, they were grouped into three mAbs denoted as No. 4, 9, and 20. Surface plasmon resonance analysis demonstrated that the affinity of these mAbs for the antigen peptide ranged from 8.7 × 10−10 to 5.5 × 10−11 M. In addition to CiMV, mAb No. 9 and 20 could detect CiMV-related viruses in leaf extracts by ELISA. Further, mAb No. 20 showed a high sensitivity to CiMV and CiMV-related viruses, simply by dot blot analysis. The anti-CiMV rabbit mAbs obtained in this study are envisioned to be extremely useful for practical applications of CiMV detection, such as in a virus detection kit.
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Affiliation(s)
- Shogo Miyoshi
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Soh Tokunaga
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Tatsuhiko Ozawa
- Department of Immunology, Graduate School of Medical and Pharmacological Science, University of Toyama, Toyama, Toyama, Japan
| | - Hiroyuki Takeda
- Division of Proteo-Drug-Discovery Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Mitsuo Aono
- Fruit Tree Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Matsuyama, Ehime, Japan
| | - Takanori Miyoshi
- Fruit Tree Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Matsuyama, Ehime, Japan
| | - Hiroyuki Kishi
- Department of Immunology, Graduate School of Medical and Pharmacological Science, University of Toyama, Toyama, Toyama, Japan
| | - Atsushi Muraguchi
- Department of Immunology, Graduate School of Medical and Pharmacological Science, University of Toyama, Toyama, Toyama, Japan
| | - Shin-Ichi Shimizu
- Fruit Tree Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Matsuyama, Ehime, Japan
| | - Akira Nozawa
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Tatsuya Sawasaki
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
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18
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Kurokawa K, Kobayashi J, Nemoto K, Nozawa A, Sawasaki T, Nakatsuka T, Yamagishi M. Expression of LhFT1, the Flowering Inducer of Asiatic Hybrid Lily, in the Bulb Scales. FRONTIERS IN PLANT SCIENCE 2020; 11:570915. [PMID: 33304361 PMCID: PMC7693649 DOI: 10.3389/fpls.2020.570915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/19/2020] [Indexed: 05/08/2023]
Abstract
Asiatic hybrid lily leaves emerge from their bulbs in spring, after cold exposure in winter, and the plant then blooms in early summer. We identified four FLOWERING LOCUS T (FT)-like genes, LhFT1, LhFT4, LhFT6, and LhFT8, from an Asiatic hybrid lily. Floral bud differentiation initiated within bulbs before the emergence of leaves. LhFT genes were mainly expressed in bulb scales, and hardly in leaves, in which the FT-like genes of many plants are expressed in response to environmental signals. LhFT1 was expressed in bulb scales after vernalization and was correlated to flower bud initiation in two cultivars with different flowering behaviors. LhFT8 was upregulated in bulb scales after cold exposure and three alternative splicing variants with a nonsense codon were simultaneously expressed. LhFT6 was upregulated in bulb scales after flower initiation, whereas LhFT4 was expressed constantly in all organs. LhFT1 overexpression complemented the late-flowering phenotype of Arabidopsis ft-10, whereas that of LhFT8 did so partly. LhFT4 and LhFT6 overexpression could not complement. Yeast two-hybrid and in vitro analyses showed that the LhFT1 protein interacted with the LhFD protein. LhFT6 and LhFT8 proteins also interacted with LhFD, as observed in AlphaScreen assay. Based on these results, we revealed that LhFT1 acts as a floral activator during floral bud initiation in Asiatic hybrid lilies. However, the biological functions of LhFT4, LhFT6, and LhFT8 remain unclear.
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Affiliation(s)
- Kana Kurokawa
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Junya Kobayashi
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | | | - Akira Nozawa
- Proteo-Science Center, Ehime University, Matsuyama, Japan
| | | | - Takashi Nakatsuka
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
- Faculty of Agriculture, Shizuoka University, Shizuoka, Japan
- College of Agriculture, Academic Institute, Shizuoka University, Shizuoka, Japan
- *Correspondence: Takashi Nakatsuka,
| | - Masumi Yamagishi
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
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19
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Nemoto K, Kagawa M, Nozawa A, Hasegawa Y, Hayashi M, Imai K, Tomii K, Sawasaki T. Identification of new abscisic acid receptor agonists using a wheat cell-free based drug screening system. Sci Rep 2018. [PMID: 29523814 PMCID: PMC5844987 DOI: 10.1038/s41598-018-22538-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Abscisic acid (ABA) is the main phytohormone involved in abiotic stress response and its adaptation, and is a candidate agrichemical. Consequently, several agonists of ABA have been developed using the yeast two-hybrid system. Here, we describe a novel cell-free-based drug screening approach for the development and validation of ABA receptor agonists. Biochemical validation of this approach between 14 ABA receptors (PYR/PYL/RCARs) and 7 type 2C-A protein phosphatases (PP2CAs) revealed the same interactions as those of previous proteome data, except for nine new interactions. By chemical screening using this approach, we identified two novel ABA receptor agonists, JFA1 (julolidine and fluorine containing ABA receptor activator 1) and JFA2 as its analog. The results of biochemical validation for this approach and biological analysis suggested that JFA1 and JFA2 inhibit seed germination and cotyledon greening of seedlings by activating PYR1 and PYL1, and that JFA2 enhanced drought tolerance without inhibiting root growth by activating not only PYR1 and PYL1 but also PYL5. Thus, our approach was useful for the development of ABA receptor agonists and their validation.
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Affiliation(s)
- Keiichirou Nemoto
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Makiko Kagawa
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Akira Nozawa
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Yoshinori Hasegawa
- Department of Technology Development, Kazusa DNA Research Institute, Kisarazu, Chiba, 292-0818, Japan
| | - Minoru Hayashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Kenichiro Imai
- Artificial Intelligence Research Center (AIRC) and Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), 2-4-7 Aomi, Koto Ward, Tokyo, 135-0064, Japan
| | - Kentaro Tomii
- Artificial Intelligence Research Center (AIRC) and Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), 2-4-7 Aomi, Koto Ward, Tokyo, 135-0064, Japan
| | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.
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20
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Takeda H. Autoantibody Profiling Using Human Autoantigen Protein Array and AlphaScreen. Methods Mol Biol 2018; 1868:93-112. [PMID: 30244457 DOI: 10.1007/978-1-4939-8802-0_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Autoantibodies that recognize self-antigens are believed to have close relationship diseases such as autoimmune diseases, cancer, and lifestyle diseases. Analysis of autoantibodies is essential for investigating pathology mechanisms, diagnosis, and therapeutics of these diseases. We developed autoantibody profiling assay using cell-free synthesized protein array and high-throughput screening technology. Our assay system can sensitively detect interaction between recombinant antigen protein and autoantibody and efficiently analyze autoantibody profiling in patients' sera.
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21
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Nemoto K, Ramadan A, Arimura GI, Imai K, Tomii K, Shinozaki K, Sawasaki T. Tyrosine phosphorylation of the GARU E3 ubiquitin ligase promotes gibberellin signalling by preventing GID1 degradation. Nat Commun 2017; 8:1004. [PMID: 29042542 PMCID: PMC5645313 DOI: 10.1038/s41467-017-01005-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 08/10/2017] [Indexed: 11/16/2022] Open
Abstract
Gibberellin (GA) is a major hormone for plant growth and development. GA response is derived from the degradation of DELLA repressor proteins after GA-dependent complex formation of the GID1 GA receptor with DELLA. Genistein is a known tyrosine (Tyr) kinase inhibitor and inhibits DELLA degradation. However, the biological role of Tyr phosphorylation on the GA response remains unclear. Here, we demonstrate that GARU (GA receptor RING E3 ubiquitin ligase) mediates ubiquitin-dependent degradation of GID1, and that the TAGK2 plant Tyr-kinase is a target of genistein and inhibits GARU–GID1A interactions by phosphorylation of GARU at Tyr321. Genistein induces degradation of GID1 and accumulation of DELLA. Conversely, Arabidopsis garu mutant and TAGK2-overexpressing plants accelerate GID1 stabilization and DELLA degradation. Under salt stress, GARU suppresses seed germination. We propose that GA response is negatively regulated by GARU-dependent GID1 ubiquitination and positively by Tyr phosphorylation of GARU by TAGK2, and genistein inhibits GA signaling by TAGK2 inhibition. Plants respond to gibberellins via GID1-dependent degradation of DELLA proteins. Here, Nemoto et al. show that the gibberellin response is positively regulated by tyrosine phosphorylation of GARU, an E3 ubiquitin ligase that mediates degradation of GID1.
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Affiliation(s)
- Keiichirou Nemoto
- Proteo-Science Center (PROS), Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Abdelaziz Ramadan
- Proteo-Science Center (PROS), Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.,Faculty of Science, Botany Department, Ain Shams University, Cairo, 11566, Egypt
| | - Gen-Ichiro Arimura
- Faculty of Industrial Science & Technology, Department of Biological Science & Technology, Tokyo University of Science, Tokyo, 125-8585, Japan
| | - Kenichiro Imai
- Artificial Intelligence Research Center (AIRC) and Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), 2-4-7 Aomi, Koto Ward, Tokyo, 135-0064, Japan
| | - Kentaro Tomii
- Artificial Intelligence Research Center (AIRC) and Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), 2-4-7 Aomi, Koto Ward, Tokyo, 135-0064, Japan
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Tatsuya Sawasaki
- Proteo-Science Center (PROS), Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.
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Autophosphorylation Assays Using Plant Receptor Kinases Synthesized in Cell-Free Systems. Methods Mol Biol 2017. [PMID: 28567648 DOI: 10.1007/978-1-4939-7063-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The wheat germ cell-free protein synthesis system has a significant advantage for high-throughput production of eukaryotic multidomain proteins in a folded state. In this chapter, we describe two kinds of methods for performing autophosphorylation assay of plant receptor kinases (PRKs) by using the wheat cell-free system. One is an in vitro kinase assay performed using biotin-streptavidin affinity purification technology, and the other is a luminescence-based high-throughput assay for autophosphorylation analysis. We anticipate that our cell-free-based methods might facilitate the characterization of plant PRKs.
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Takeda H, Zhou W, Kido K, Suno R, Iwasaki T, Kobayashi T, Sawasaki T. CP5 system, for simple and highly efficient protein purification with a C-terminal designed mini tag. PLoS One 2017; 12:e0178246. [PMID: 28542437 PMCID: PMC5444806 DOI: 10.1371/journal.pone.0178246] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/10/2017] [Indexed: 02/06/2023] Open
Abstract
There are many strategies to purify recombinant proteins of interest, and affinity purification utilizing monoclonal antibody that targets a linear epitope sequence is one of the essential techniques used in current biochemistry and structural biology. Here we introduce a new protein purification system using a very short CP5 tag. First, we selected anti-dopamine receptor D1 (DRD1) rabbit monoclonal antibody clone Ra62 (Ra62 antibody) as capture antibody, and identified its minimal epitope sequence as a 5-amino-acid sequence at C-terminal of DRD1 (GQHPT-COOH, D1CE sequence). We found that single amino acid substitution in D1CE sequence (GQHVT-COOH) increased dissociation rate up to 10-fold, and named the designed epitope sequence CP5 tag. Using Ra62 antibody and 2 peptides with different affinity, we developed a new affinity protein purification method, CP5 system. Ra62 antibody quickly captures CP5-tagged target protein, and captured CP5-tagged protein was eluted by competing with higher affinity D1CE peptide. By taking the difference of the affinity between D1CE and CP5, sharp elution under mild condition was achieved. Using CP5 system, we successfully purified deubiquitinase CYLD and E3 ubiquitin ligase MARCH3, and detected their catalytic activity. As to G protein-coupled receptors (GPCRs), 9 out of 12 cell-free synthesized ones were purified, demonstrating its purification capability of integral membrane proteins. CP5 tagged CHRM2 expressed by baculovirus-insect cell was also successfully purified by CP5 system. CP5 system offers several distinct advantages in addition to its specificity and elution performance. CP5 tag is easy to construct and handle because of its short length, which has less effect on protein characters. Mild elution of CP5 system is particulaly suitable for preparing delicate proteins such as enzymes and membrane proteins. Our data demonstrate that CP5 system provides a new promising option in protein sample preparation with high yield, purity and activity for downstream applications in functional and structural analysis.
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Affiliation(s)
- Hiroyuki Takeda
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Wei Zhou
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Kohki Kido
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Ryoji Suno
- Department of Medical Chemistry and Cell Biology, Kyoto University Graduate School of Medicine, Yoshida, Sakyo-ku, Kyoto, Japan
| | - Takahiro Iwasaki
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Takuya Kobayashi
- Department of Medical Chemistry and Cell Biology, Kyoto University Graduate School of Medicine, Yoshida, Sakyo-ku, Kyoto, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan
| | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
- * E-mail:
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24
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Imagawa E, Higashimoto K, Sakai Y, Numakura C, Okamoto N, Matsunaga S, Ryo A, Sato Y, Sanefuji M, Ihara K, Takada Y, Nishimura G, Saitsu H, Mizuguchi T, Miyatake S, Nakashima M, Miyake N, Soejima H, Matsumoto N. Mutations in genes encoding polycomb repressive complex 2 subunits cause Weaver syndrome. Hum Mutat 2017; 38:637-648. [PMID: 28229514 DOI: 10.1002/humu.23200] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 02/13/2017] [Accepted: 02/18/2017] [Indexed: 12/30/2022]
Abstract
Weaver syndrome (WS) is a rare congenital overgrowth disorder caused by heterozygous mutations in EZH2 (enhancer of zeste homolog 2) or EED (embryonic ectoderm development). EZH2 and EED are core components of the polycomb repressive complex 2 (PRC2), which possesses histone methyltransferase activity and catalyzes trimethylation of histone H3 at lysine 27. Here, we analyzed eight probands with clinically suspected WS by whole-exome sequencing and identified three mutations: a 25.4-kb deletion partially involving EZH2 and CUL1 (individual 1), a missense mutation (c.707G>C, p.Arg236Thr) in EED (individual 2), and a missense mutation (c.1829A>T, p.Glu610Val) in SUZ12 (suppressor of zeste 12 homolog) (individual 3) inherited from her father (individual 4) with a mosaic mutation. SUZ12 is another component of PRC2 and germline mutations in SUZ12 have not been previously reported in humans. In vitro functional analyses demonstrated that the identified EED and SUZ12 missense mutations cause decreased trimethylation of lysine 27 of histone H3. These data indicate that loss-of-function mutations of PRC2 components are an important cause of WS.
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Affiliation(s)
- Eri Imagawa
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Ken Higashimoto
- Division of Molecular Genetics and Epigenetics, Department of Biomolecular Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Chikahiko Numakura
- Department of Pediatrics, Yamagata University School of Medicine, Yamagata, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Satoko Matsunaga
- Department of Microbiology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Yoshinori Sato
- Department of Molecular Biology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Masafumi Sanefuji
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenji Ihara
- Department of Pediatrics, Faculty of Medicine, Oita University, Yufu, Japan
| | - Yui Takada
- Department of Pediatrics, Japanese Red Cross Fukuoka Hospital, Fukuoka, Japan
| | - Gen Nishimura
- Department of Pediatric Imaging, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Mitsuko Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hidenobu Soejima
- Division of Molecular Genetics and Epigenetics, Department of Biomolecular Sciences, Faculty of Medicine, Saga University, Saga, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Yamamoto T, Taira Nihira N, Yogosawa S, Aoki K, Takeda H, Sawasaki T, Yoshida K. Interaction between RNF8 and DYRK2 is required for the recruitment of DNA repair molecules to DNA double-strand breaks. FEBS Lett 2017; 591:842-853. [PMID: 28194753 DOI: 10.1002/1873-3468.12596] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/09/2017] [Accepted: 02/13/2017] [Indexed: 01/12/2023]
Abstract
The genome of eukaryotic cells is frequently exposed to damage by various genotoxins. Phosphorylation of histone H2AX at Serine 139 (γ-H2AX) is a hallmark of DNA damage. RNF8 monoubiquitinates γ-H2AX with the Lys63-linked ubiquitin chain to tether DNA repair molecules at DNA lesions. A high-throughput screening identified RNF8 as a binding partner of dual-specificity tyrosine phosphorylation-regulated kinase 2 (DYRK2). Notably, DNA damage-induced monoubiquitination of γ-H2AX is impaired in DYRK2-depleted cells. The foci formation of p53-binding protein 1 at DNA double-strand break sites is suppressed in DYRK2 knockdown cells, which fail to repair the DNA damage. A homologous recombination assay showed decreased repair efficiency in DYRK2-depleted cells. Our findings indicate direct interaction of DYRK2 with RNF8 in regulating response to DNA damage.
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Affiliation(s)
- Takenori Yamamoto
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Naoe Taira Nihira
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Satomi Yogosawa
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Katsuhiko Aoki
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Hiroyuki Takeda
- Cell-Free Science and Technology Research Center, Ehime University, Matsuyama, Ehime, Japan
| | - Tatsuya Sawasaki
- Cell-Free Science and Technology Research Center, Ehime University, Matsuyama, Ehime, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
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OsMYC2, an essential factor for JA-inductive sakuranetin production in rice, interacts with MYC2-like proteins that enhance its transactivation ability. Sci Rep 2017; 7:40175. [PMID: 28067270 PMCID: PMC5220304 DOI: 10.1038/srep40175] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/02/2016] [Indexed: 11/08/2022] Open
Abstract
Biosynthesis of sakuranetin, a flavonoid anti-fungal phytoalexin that occurs in rice, is highly dependent on jasmonic acid (JA) signalling and induced by a variety of environmental stimuli. We previously identified OsNOMT, which encodes naringenin 7-O-methyltransferase (NOMT); NOMT is a key enzyme for sakuranetin production. Although OsNOMT expression is induced by JA treatment, the regulation mechanism that activates the biosynthetic pathway of sakuranetin has not yet been elucidated. In this study, we show that JA-inducible basic helix-loop-helix transcriptional factor OsMYC2 drastically enhances the activity of the OsNOMT promoter and is essential for JA-inducible sakuranetin production. In addition, we identified 2 collaborators of OsMYC2, OsMYC2-like protein 1 and 2 (OsMYL1 and OsMYL2) that further activated the OsNOMT promoter in synergy with OsMYC2. Physical interaction of OsMYC2 with OsMYL1 and OsMYL2 further supported the idea that these interactions lead to the enhancement of the transactivation activity of OsMYC2. Our results indicate that JA signalling via OsMYC2 is reinforced by OsMYL1 and OsMYL2, resulting in the inductive production of sakuranetin during defence responses in rice.
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Kudoh A, Miyakawa K, Matsunaga S, Matsushima Y, Kosugi I, Kimura H, Hayakawa S, Sawasaki T, Ryo A. H11/HSPB8 Restricts HIV-2 Vpx to Restore the Anti-Viral Activity of SAMHD1. Front Microbiol 2016; 7:883. [PMID: 27379031 PMCID: PMC4904303 DOI: 10.3389/fmicb.2016.00883] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/25/2016] [Indexed: 11/13/2022] Open
Abstract
Virus-host interactions play vital roles in viral replication and virus-induced pathogenesis. Viruses rely entirely upon host cells to reproduce progeny viruses; however, host factors positively or negatively regulate virus replication by interacting with viral proteins. The elucidation of virus-host protein interaction not only provides a better understanding of the molecular mechanisms by which host cells combat viral infections, but also facilitates the development of new anti-viral therapeutics. Identification of relevant host factors requires techniques that enable comprehensive characterization of virus-host protein interactions. In this study, we developed a proteomic approach to systematically identify human protein kinases that interact potently with viral proteins. For this purpose, we synthesized 412 full-length human protein kinases using the wheat germ cell-free protein synthesis system, and screened them for their association with a virus protein using the amplified luminescent proximity homogenous assay (AlphaScreen). Using this system, we attempted to discover a robust anti-viral host restriction mechanism targeting virus protein X (Vpx) of HIV-2. The screen identified H11/HSPB8 as a Vpx-binding protein that negatively regulates the stability and function of Vpx. Indeed, overexpression of H11/HSPB8 promoted the degradation of Vpx via the ubiquitin-proteasome pathway and inhibited its interaction with SAMHD1, a host restriction factor responsible for blocking replication of HIV. Conversely, targeted knockdown of H11/HSPB8 in human trophoblast cells, which ordinarily express high levels of this protein, restored the expression and function of Vpx, making the cells highly susceptible to viral replication. These results demonstrate that our proteomic approach represents a powerful tool for revealing virus-host interaction not yet identified by conventional methods. Furthermore, we showed that H11/HSPB8 could be a potential host regulatory factor that may prevent placental infection of HIV-2 during pregnancy.
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Affiliation(s)
- Ayumi Kudoh
- Department of Microbiology, School of Medicine, Yokohama City University Yokohama, Japan
| | - Kei Miyakawa
- Department of Microbiology, School of Medicine, Yokohama City University Yokohama, Japan
| | - Satoko Matsunaga
- Department of Microbiology, School of Medicine, Yokohama City University Yokohama, Japan
| | - Yuki Matsushima
- Kawasaki City Health and Safety Research Center Kanagawa, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Hirokazu Kimura
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases Tokyo, Japan
| | - Satoshi Hayakawa
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine Tokyo, Japan
| | | | - Akihide Ryo
- Department of Microbiology, School of Medicine, Yokohama City University Yokohama, Japan
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AGIA Tag System Based on a High Affinity Rabbit Monoclonal Antibody against Human Dopamine Receptor D1 for Protein Analysis. PLoS One 2016; 11:e0156716. [PMID: 27271343 PMCID: PMC4894603 DOI: 10.1371/journal.pone.0156716] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 05/18/2016] [Indexed: 01/11/2023] Open
Abstract
Polypeptide tag technology is widely used for protein detection and affinity purification. It consists of two fundamental elements: a peptide sequence and a binder which specifically binds to the peptide tag. In many tag systems, antibodies have been used as binder due to their high affinity and specificity. Recently, we obtained clone Ra48, a high-affinity rabbit monoclonal antibody (mAb) against dopamine receptor D1 (DRD1). Here, we report a novel tag system composed of Ra48 antibody and its epitope sequence. Using a deletion assay, we identified EEAAGIARP in the C-terminal region of DRD1 as the minimal epitope of Ra48 mAb, and we named this sequence the "AGIA" tag, based on its central sequence. The tag sequence does not include the four amino acids, Ser, Thr, Tyr, or Lys, which are susceptible to post-translational modification. We demonstrated performance of this new tag system in biochemical and cell biology applications. SPR analysis demonstrated that the affinity of the Ra48 mAb to the AGIA tag was 4.90 × 10-9 M. AGIA tag showed remarkably high sensitivity and specificity in immunoblotting. A number of AGIA-fused proteins overexpressed in animal and plant cells were detected by anti-AGIA antibody in immunoblotting and immunostaining with low background, and were immunoprecipitated efficiently. Furthermore, a single amino acid substitution of the second Glu to Asp (AGIA/E2D) enabled competitive dissociation of AGIA/E2D-tagged protein by adding wild-type AGIA peptide. It enabled one-step purification of AGIA/E2D-tagged recombinant proteins by peptide competition under physiological conditions. The sensitivity and specificity of the AGIA system makes it suitable for use in multiple methods for protein analysis.
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Establishment of a Wheat Cell-Free Synthesized Protein Array Containing 250 Human and Mouse E3 Ubiquitin Ligases to Identify Novel Interaction between E3 Ligases and Substrate Proteins. PLoS One 2016; 11:e0156718. [PMID: 27249653 PMCID: PMC4889105 DOI: 10.1371/journal.pone.0156718] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 05/18/2016] [Indexed: 01/14/2023] Open
Abstract
Ubiquitination is a key post-translational modification in the regulation of numerous biological processes in eukaryotes. The primary roles of ubiquitination are thought to be the triggering of protein degradation and the regulation of signal transduction. During protein ubiquitination, substrate specificity is mainly determined by E3 ubiquitin ligase (E3). Although more than 600 genes in the human genome encode E3, the E3s of many target proteins remain unidentified owing to E3 diversity and the instability of ubiquitinated proteins in cell. We demonstrate herein a novel biochemical analysis for the identification of E3s targeting specific proteins. Using wheat cell-free protein synthesis system, a protein array containing 227 human and 23 mouse recombinant E3s was synthesized. To establish the high-throughput binding assay using AlphaScreen technology, we selected MDM2 and p53 as the model combination of E3 and its target protein. The AlphaScreen assay specifically detected the binding of p53 and MDM2 in a crude translation mixture. Then, a comprehensive binding assay using the E3 protein array was performed. Eleven of the E3s showed high binding activity, including four previously reported E3s (e.g., MDM2, MDM4, and WWP1) targeting p53. This result demonstrated the reliability of the assay. Another interactors, RNF6 and DZIP3—which there have been no report to bind p53—were found to ubiquitinate p53 in vitro. Further analysis showed that RNF6 decreased the amount of p53 in H1299 cells in E3 activity-dependent manner. These results suggest the possibility that the RNF6 ubiquitinates and degrades p53 in cells. The novel in vitro screening system established herein is a powerful tool for finding novel E3s of a target protein.
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Mizutani Y, Shiogama K, Onouchi T, Sakurai K, Inada KI, Tsutsumi Y. Enzyme-labeled Antigen Method: Development and Application of the Novel Approach for Identifying Plasma Cells Locally Producing Disease-specific Antibodies in Inflammatory Lesions. Acta Histochem Cytochem 2016; 49:7-19. [PMID: 27006517 PMCID: PMC4794554 DOI: 10.1267/ahc.15030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 01/30/2016] [Indexed: 12/24/2022] Open
Abstract
In chronic inflammatory lesions of autoimmune and infectious diseases, plasma cells are frequently observed. Antigens recognized by antibodies produced by the plasma cells mostly remain unclear. A new technique identifying these corresponding antigens may give us a breakthrough for understanding the disease from a pathophysiological viewpoint, simply because the immunocytes are seen within the lesion. We have developed an enzyme-labeled antigen method for microscopic identification of the antigen recognized by specific antibodies locally produced in plasma cells in inflammatory lesions. Firstly, target biotinylated antigens were constructed by the wheat germ cell-free protein synthesis system or through chemical biotinylation. Next, proteins reactive to antibodies in tissue extracts were screened and antibody titers were evaluated by the AlphaScreen method. Finally, with the enzyme-labeled antigen method using the biotinylated antigens as probes, plasma cells producing specific antibodies were microscopically localized in fixed frozen sections. Our novel approach visualized tissue plasma cells that produced 1) autoantibodies in rheumatoid arthritis, 2) antibodies against major antigens of Porphyromonas gingivalis in periodontitis or radicular cyst, and 3) antibodies against a carbohydrate antigen, Strep A, of Streptococcus pyogenes in recurrent tonsillitis. Evaluation of local specific antibody responses expectedly contributes to clarifying previously unknown processes in inflammatory disorders.
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Affiliation(s)
| | - Kazuya Shiogama
- Department of Pathology, Fujita Health University School of Medicine
| | - Takanori Onouchi
- Department of Pathology, Fujita Health University School of Medicine
| | - Kouhei Sakurai
- Department of Pathology, Banbuntane Houtokukai Hospital, Fujita Health University School of Medicine
| | - Ken-ichi Inada
- Department of Pathology, Banbuntane Houtokukai Hospital, Fujita Health University School of Medicine
| | - Yutaka Tsutsumi
- Department of Pathology, Fujita Health University School of Medicine
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31
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Kojima T, Mizoguchi T, Ota E, Hata J, Homma K, Zhu B, Hitomi K, Nakano H. Immobilization of proteins onto microbeads using a DNA binding tag for enzymatic assays. J Biosci Bioeng 2016; 121:147-53. [DOI: 10.1016/j.jbiosc.2015.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 06/02/2015] [Accepted: 06/10/2015] [Indexed: 12/16/2022]
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32
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Ramadan A, Nemoto K, Seki M, Shinozaki K, Takeda H, Takahashi H, Sawasaki T. Wheat germ-based protein libraries for the functional characterisation of the Arabidopsis E2 ubiquitin conjugating enzymes and the RING-type E3 ubiquitin ligase enzymes. BMC PLANT BIOLOGY 2015; 15:275. [PMID: 26556605 PMCID: PMC4641371 DOI: 10.1186/s12870-015-0660-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 11/03/2015] [Indexed: 05/21/2023]
Abstract
BACKGROUND Protein ubiquitination is a ubiquitous mechanism in eukaryotes. In Arabidopsis, ubiquitin modification is mainly mediated by two ubiquitin activating enzymes (E1s), 37 ubiquitin conjugating enzymes (E2s), and more than 1300 predicted ubiquitin ligase enzymes (E3s), of which ~470 are RING-type E3s. A large proportion of the RING E3's gene products have yet to be characterised in vitro, likely because of the laborious work involved in large-scale cDNA cloning and protein expression, purification, and characterisation. In addition, several E2s, which might be necessary for the activity of certain E3 ligases, cannot be expressed by Escherichia coli or cultured insect cells and, therefore, remain uncharacterised. RESULTS Using the RIKEN Arabidopsis full-length cDNA library (RAFL) with the 'split-primer' PCR method and a wheat germ cell-free system, we established protein libraries of Arabidopsis E2 and RING E3 enzymes. We expressed 35 Arabidopsis E2s including six enzymes that have not been previously expressed, and 204 RING proteins, most of which had not been functionally characterised. Thioester assays using dithiothreitol (DTT) showed DTT-sensitive ubiquitin thioester formation for all E2s expressed. In expression assays of RING proteins, 31 proteins showed high molecular smears, which are probably the result of their functional activity. The activities of another 27 RING proteins were evaluated with AtUBC10 and/or a group of different E2s. All the 27 RING E3s tested showed ubiquitin ligase activity, including 17 RING E3s. Their activities are reported for the first time. CONCLUSION The wheat germ cell-free system used in our study, which is a eukaryotic expression system and more closely resembles the endogenous expression of plant proteins, is very suitable for expressing Arabidopsis E2s and RING E3s in their functional form. In addition, the protein libraries described here can be used for further understanding E2-E3 specificities and as platforms for protein-protein interaction screening.
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Affiliation(s)
- Abdelaziz Ramadan
- Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
- Botany Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt.
| | - Keiichirou Nemoto
- Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
| | - Motoaki Seki
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.
| | - Hiroyuki Takeda
- Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
| | | | - Tatsuya Sawasaki
- Proteo-Science Center, Ehime University, Matsuyama, 790-8577, Japan.
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Zemella A, Thoring L, Hoffmeister C, Kubick S. Cell-Free Protein Synthesis: Pros and Cons of Prokaryotic and Eukaryotic Systems. Chembiochem 2015; 16:2420-31. [PMID: 26478227 PMCID: PMC4676933 DOI: 10.1002/cbic.201500340] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Indexed: 01/07/2023]
Abstract
From its start as a small-scale in vitro system to study fundamental translation processes, cell-free protein synthesis quickly rose to become a potent platform for the high-yield production of proteins. In contrast to classical in vivo protein expression, cell-free systems do not need time-consuming cloning steps, and the open nature provides easy manipulation of reaction conditions as well as high-throughput potential. Especially for the synthesis of difficult to express proteins, such as toxic and transmembrane proteins, cell-free systems are of enormous interest. The modification of the genetic code to incorporate non-canonical amino acids into the target protein in particular provides enormous potential in biotechnology and pharmaceutical research and is in the focus of many cell-free projects. Many sophisticated cell-free systems for manifold applications have been established. This review describes the recent advances in cell-free protein synthesis and details the expanding applications in this field.
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Affiliation(s)
- Anne Zemella
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Lena Thoring
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Christian Hoffmeister
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Stefan Kubick
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany.
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Miyake N, Tsukaguchi H, Koshimizu E, Shono A, Matsunaga S, Shiina M, Mimura Y, Imamura S, Hirose T, Okudela K, Nozu K, Akioka Y, Hattori M, Yoshikawa N, Kitamura A, Cheong HI, Kagami S, Yamashita M, Fujita A, Miyatake S, Tsurusaki Y, Nakashima M, Saitsu H, Ohashi K, Imamoto N, Ryo A, Ogata K, Iijima K, Matsumoto N. Biallelic Mutations in Nuclear Pore Complex Subunit NUP107 Cause Early-Childhood-Onset Steroid-Resistant Nephrotic Syndrome. Am J Hum Genet 2015; 97:555-66. [PMID: 26411495 DOI: 10.1016/j.ajhg.2015.08.013] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 08/28/2015] [Indexed: 12/19/2022] Open
Abstract
The nuclear pore complex (NPC) is a huge protein complex embedded in the nuclear envelope. It has central functions in nucleocytoplasmic transport, nuclear framework, and gene regulation. Nucleoporin 107 kDa (NUP107) is a component of the NPC central scaffold and is an essential protein in all eukaryotic cells. Here, we report on biallelic NUP107 mutations in nine affected individuals who are from five unrelated families and show early-onset steroid-resistant nephrotic syndrome (SRNS). These individuals have pathologically focal segmental glomerulosclerosis, a condition that leads to end-stage renal disease with high frequency. NUP107 is ubiquitously expressed, including in glomerular podocytes. Three of four NUP107 mutations detected in the affected individuals hamper NUP107 binding to NUP133 (nucleoporin 133 kDa) and NUP107 incorporation into NPCs in vitro. Zebrafish with nup107 knockdown generated by morpholino oligonucleotides displayed hypoplastic glomerulus structures and abnormal podocyte foot processes, thereby mimicking the pathological changes seen in the kidneys of the SRNS individuals with NUP107 mutations. Considering the unique properties of the podocyte (highly differentiated foot-process architecture and slit membrane and the inability to regenerate), we propose a "podocyte-injury model" as the pathomechanism for SRNS due to biallelic NUP107 mutations.
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Affiliation(s)
- Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Hiroyasu Tsukaguchi
- Second Department of Internal Medicine, Kansai Medical University, Osaka 570-8507, Japan.
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Akemi Shono
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Satoko Matsunaga
- Department of Microbiology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Masaaki Shiina
- Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | | | - Shintaro Imamura
- National Research Institute of Fisheries Science, Yokohama 236-8648, Japan
| | - Tomonori Hirose
- Department of Molecular Biology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Koji Okudela
- Department of Pathology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Kandai Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Yuko Akioka
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo 162-8666, Japan
| | - Motoshi Hattori
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo 162-8666, Japan
| | - Norishige Yoshikawa
- Center for Clinical Research and Development, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Akiko Kitamura
- Department of Immunology & Parasitology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hae Il Cheong
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul 03080, Korea; Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul 03080, Korea; Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Shoji Kagami
- Department of Pediatrics, University of Tokushima Graduate School, Tokushima 770-8503, Japan
| | - Michiaki Yamashita
- National Research Institute of Fisheries Science, Yokohama 236-8648, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Yoshinori Tsurusaki
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Mitsuko Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Hirotomo Saitsu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Kenichi Ohashi
- Department of Pathology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Naoko Imamoto
- Cellular Dynamics Laboratory, RIKEN, Wako 351-0198, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Kazuhiro Ogata
- Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Kazumoto Iijima
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan.
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Vincetti P, Caporuscio F, Kaptein S, Gioiello A, Mancino V, Suzuki Y, Yamamoto N, Crespan E, Lossani A, Maga G, Rastelli G, Castagnolo D, Neyts J, Leyssen P, Costantino G, Radi M. Discovery of Multitarget Antivirals Acting on Both the Dengue Virus NS5-NS3 Interaction and the Host Src/Fyn Kinases. J Med Chem 2015; 58:4964-75. [DOI: 10.1021/acs.jmedchem.5b00108] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Paolo Vincetti
- P4T
Group, Dipartimento di Farmacia, Università degli Studi di Parma, Viale delle Scienze, 27/A, 43124 Parma, Italy
| | - Fabiana Caporuscio
- Dipartimento
di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Suzanne Kaptein
- Laboratory
of Virology and Experimental Chemotherapy, Rega Institute for Medical
Research, KU Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Antimo Gioiello
- Laboratory
of Medicinal and Advanced Synthetic Chemistry (Lab MASC), Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, I-06123 Perugia, Italy
| | - Valentina Mancino
- Laboratory
of Medicinal and Advanced Synthetic Chemistry (Lab MASC), Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, I-06123 Perugia, Italy
| | - Youichi Suzuki
- Department
of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Center for Translational Medicine, 14 Medical Drive, 15-02, Level 15, Singapore 117599, Singapore
| | - Naoki Yamamoto
- Department
of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Center for Translational Medicine, 14 Medical Drive, 15-02, Level 15, Singapore 117599, Singapore
| | - Emmanuele Crespan
- Istituto
di Genetica Molecolare, IGM-CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - Andrea Lossani
- Istituto
di Genetica Molecolare, IGM-CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - Giovanni Maga
- Istituto
di Genetica Molecolare, IGM-CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - Giulio Rastelli
- Dipartimento
di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Daniele Castagnolo
- Department
of Applied Sciences, Northumbria University Newcastle, Ellison Place, NE1 8ST Newcastle upon Tyne, United Kingdom
| | - Johan Neyts
- Laboratory
of Virology and Experimental Chemotherapy, Rega Institute for Medical
Research, KU Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Pieter Leyssen
- Laboratory
of Virology and Experimental Chemotherapy, Rega Institute for Medical
Research, KU Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Gabriele Costantino
- P4T
Group, Dipartimento di Farmacia, Università degli Studi di Parma, Viale delle Scienze, 27/A, 43124 Parma, Italy
| | - Marco Radi
- P4T
Group, Dipartimento di Farmacia, Università degli Studi di Parma, Viale delle Scienze, 27/A, 43124 Parma, Italy
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Production of monoclonal antibodies against GPCR using cell-free synthesized GPCR antigen and biotinylated liposome-based interaction assay. Sci Rep 2015; 5:11333. [PMID: 26061673 PMCID: PMC4462149 DOI: 10.1038/srep11333] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 05/21/2015] [Indexed: 11/08/2022] Open
Abstract
G-protein-coupled receptors (GPCRs) are one of the most important drug targets, and anti-GPCR monoclonal antibody (mAb) is an essential tool for functional analysis of GPCRs. However, it is very difficult to develop GPCR-specific mAbs due to difficulties in production of recombinant GPCR antigens, and lack of efficient mAb screening method. Here we describe a novel approach for the production of mAbs against GPCR using two original methods, bilayer-dialysis method and biotinylated liposome-based interaction assay (BiLIA), both of which are developed using wheat cell-free protein synthesis system and liposome technology. Using bilayer-dialysis method, various GPCRs were successfully synthesized with quality and quantity sufficient for immunization. For selection of specific mAb, we designed BiLIA that detects interaction between antibody and membrane protein on liposome. BiLIA prevented denaturation of GPCR, and then preferably selected conformation-sensitive antibodies. Using this approach, we successfully obtained mAbs against DRD1, GHSR, PTGER1 and T1R1. With respect to DRD1 mAb, 36 mouse mAbs and 6 rabbit mAbs were obtained which specifically recognized native DRD1 with high affinity. Among them, half of the mAbs were conformation-sensitive mAb, and two mAbs recognized extracellular loop 2 of DRD1. These results indicated that this approach is useful for GPCR mAb production.
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Nemoto K, Takemori N, Seki M, Shinozaki K, Sawasaki T. Members of the Plant CRK Superfamily Are Capable of Trans- and Autophosphorylation of Tyrosine Residues. J Biol Chem 2015; 290:16665-77. [PMID: 25969537 DOI: 10.1074/jbc.m114.617274] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Indexed: 11/06/2022] Open
Abstract
Protein phosphorylation on Tyr residues is a key post-translational modification in mammals. In plants, recent studies have identified Tyr-specific protein phosphatase and Tyr-phosphorylated proteins in Arabidopsis by phosphoproteomic screenings, implying that plants have a Tyr phosphorylation signal pathway. However, little is known about the protein kinases (PKs) involved in Tyr phosphorylation in plants. Here, we demonstrate that Arabidopsis calcium-dependent protein kinase (CDPK/CPK)-related PKs (CRKs) have high Tyr-autophosphorylation activity and that they can phosphorylate Tyr residue(s) on substrate proteins in Arabidopsis. To identify PKs for Tyr phosphorylation, we examined the autophosphorylation activity of 759 PKs using an Arabidopsis protein array based on a wheat cell-free system. In total, we identified 38 PKs with Tyr-autophosphorylation activity. The CRK family was a major protein family identified. A cell-free substrate screening revealed that these CRKs phosphorylate β-tubulin (TBB) 2, TBB7, and certain transcription factors (TFs) such as ethylene response factor 13 (ERF13). All five CRKs tested showed Tyr-auto/trans-phosphorylation activity and especially two CRKs, CRK2 and CRK3, showed a high ERF13 Tyr-phosphorylation activity. A cell-based transient expression assay revealed that Tyr(16/)Tyr(207) sites in ERF13 were phosphorylated by CRK3 and that Tyr phosphorylation of endogenous TBBs occurs in CRK2 overexpressing cells. Furthermore, crk2 and crk3 mutants showed a decrease in the Tyr phosphorylation level of TBBs. These results suggest that CRKs have Tyr kinase activity, and these might be one of the major PKs responsible for protein Tyr phosphorylation in Arabidopsis plants.
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Affiliation(s)
- Keiichirou Nemoto
- From the Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577 and
| | - Nobuaki Takemori
- From the Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577 and
| | - Motoaki Seki
- the Plant Genomic Network Research Team and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kazuo Shinozaki
- the Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, and
| | - Tatsuya Sawasaki
- From the Proteo-Science Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577 and
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Matsunaga S, Kawakami S, Matsuo I, Okayama A, Tsukagoshi H, Kudoh A, Matsushima Y, Shimizu H, Okabe N, Hirano H, Yamamoto N, Kimura H, Ryo A. Wheat germ cell-free system-based production of hemagglutinin-neuraminidase glycoprotein of human parainfluenza virus type 3 for generation and characterization of monoclonal antibody. Front Microbiol 2014; 5:208. [PMID: 24860558 PMCID: PMC4026691 DOI: 10.3389/fmicb.2014.00208] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 04/18/2014] [Indexed: 12/20/2022] Open
Abstract
Human parainfluenza virus 3 (HPIV3) commonly causes respiratory disorders in infants and young children. Monoclonal antibodies (MAbs) have been produced to several components of HPIV3 and commercially available. However, the utility of these antibodies for several immunological and proteomic assays for understanding the nature of HPIV3 infection remain to be characterized. Herein, we report the development and characterization of MAbs against hemagglutinin-neuraminidase (HN) of HPIV3. A recombinant full-length HPIV3-HN was successfully synthesized using the wheat-germ cell-free protein production system. After immunization and cell fusion, 36 mouse hybridomas producing MAbs to HPIV3-HN were established. The MAbs obtained were fully characterized using ELISA, immunoblotting, and immunofluorescent analyses. Of the MAbs tested, single clone was found to be applicable in both flow cytometry and immunoprecipitation procedures. By utilizing the antibody, we identified HPIV3-HN binding host proteins via immunoprecipitation-based mass spectrometry analysis. The newly-developed MAbs could thus be a valuable tool for the study of HPIV3 infection as well as the several diagnostic tests of this virus.
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Affiliation(s)
- Satoko Matsunaga
- Department of Microbiology, Yokohama City University School of Medicine Kanagawa, Japan
| | - Shiho Kawakami
- Department of Microbiology, Yokohama City University School of Medicine Kanagawa, Japan
| | - Izumi Matsuo
- Department of Microbiology, Yokohama City University School of Medicine Kanagawa, Japan
| | - Akiko Okayama
- Proteome Analysis Center, Yokohama City University School of Medicine Kanagawa, Japan
| | - Hiroyuki Tsukagoshi
- Gunma Prefectural Institute of Public Health and Environmental Sciences Gunma, Japan
| | - Ayumi Kudoh
- Department of Microbiology, Yokohama City University School of Medicine Kanagawa, Japan
| | - Yuki Matsushima
- Kawasaki City Health and Safety Research Center Kanagawa, Japan
| | - Hideaki Shimizu
- Kawasaki City Health and Safety Research Center Kanagawa, Japan
| | - Nobuhiko Okabe
- Kawasaki City Health and Safety Research Center Kanagawa, Japan
| | - Hisashi Hirano
- Proteome Analysis Center, Yokohama City University School of Medicine Kanagawa, Japan
| | - Naoki Yamamoto
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore Singapore
| | - Hirokazu Kimura
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases Tokyo, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University School of Medicine Kanagawa, Japan
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Mizutani Y, Tsuge S, Takeda H, Hasegawa Y, Shiogama K, Onouchi T, Inada K, Sawasaki T, Tsutsumi Y. In situ visualization of plasma cells producing antibodies reactive to Porphyromonas gingivalis in periodontitis: the application of the enzyme-labeled antigen method. Mol Oral Microbiol 2014; 29:156-73. [PMID: 24698402 PMCID: PMC4282379 DOI: 10.1111/omi.12052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2014] [Indexed: 12/02/2022]
Abstract
Porphyromonas gingivalis is a keystone periodontal pathogen. Histologocally, the gingival tissue in periodontitis shows dense infiltration of plasma cells. However, antigens recognized by antibodies secreted from the immunocytes remain unknown. The enzyme-labeled antigen method was applied to detecting plasma cells producing P. gingivalis-specific antibodies in biopsied gingival tissue of periodontitis. N-terminally biotinylated P. gingivalis antigens, Ag53 and four gingipain domains (Arg-pro, Arg-hgp, Lys-pro and Lys-hgp) were prepared by the cell-free protein synthesis system using wheatgerm extract. With these five labeled proteins as probes, 20 lesions of periodontitis were evaluated. With the AlphaScreen method, antibodies against any one of the five P. gingivalis antigens were detected in 11 (55%) serum samples and 17 (85%) tissue extracts. Using the enzyme-labeled antigen method on paraformaldehyde-fixed frozen sections of gingival tissue, plasma cells were labeled with any one of the five antigens in 17 (94%) of 18 specimens, in which evaluable plasma cells were detected. The positivity rates in periodontitis were significantly higher than those found previously in radicular cysts (20% in sera and 33% in tissue extracts with the AlphaScreen method, and 25% with the enzyme-labeled antigen method). Our findings directly indicate that antibodies reactive to P. gingivalis are locally produced in the gingival lesions, and that inflammatory reactions against P. gingivalis are involved in periodontitis.
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Affiliation(s)
- Y Mizutani
- Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Involvement of hepatitis C virus NS5A hyperphosphorylation mediated by casein kinase I-α in infectious virus production. J Virol 2014; 88:7541-55. [PMID: 24760886 DOI: 10.1128/jvi.03170-13] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
UNLABELLED Nonstructural protein 5A (NS5A) of hepatitis C virus (HCV) possesses multiple functions in the viral life cycle. NS5A is a phosphoprotein that exists in hyperphosphorylated and basally phosphorylated forms. Although the phosphorylation status of NS5A is considered to have a significant impact on its function, the mechanistic details regulating NS5A phosphorylation, as well as its exact roles in the HCV life cycle, are still poorly understood. In this study, we screened 404 human protein kinases via in vitro binding and phosphorylation assays, followed by RNA interference-mediated gene silencing in an HCV cell culture system. Casein kinase I-α (CKI-α) was identified as an NS5A-associated kinase involved in NS5A hyperphosphorylation and infectious virus production. Subcellular fractionation and immunofluorescence confocal microscopy analyses showed that CKI-α-mediated hyperphosphorylation of NS5A contributes to the recruitment of NS5A to low-density membrane structures around lipid droplets (LDs) and facilitates its interaction with core protein and the viral assembly. Phospho-proteomic analysis of NS5A with or without CKI-α depletion identified peptide fragments that corresponded to the region located within the low-complexity sequence I, which is important for CKI-α-mediated NS5A hyperphosphorylation. This region contains eight serine residues that are highly conserved among HCV isolates, and subsequent mutagenesis analysis demonstrated that serine residues at amino acids 225 and 232 in NS5A (genotype 2a) may be involved in NS5A hyperphosphorylation and hyperphosphorylation-dependent regulation of virion production. These findings provide insight concerning the functional role of NS5A phosphorylation as a regulatory switch that modulates its multiple functions in the HCV life cycle. IMPORTANCE Mechanisms regulating NS5A phosphorylation and its exact function in the HCV life cycle have not been clearly defined. By using a high-throughput screening system targeting host protein kinases, we identified CKI-α as an NS5A-associated kinase involved in NS5A hyperphosphorylation and the production of infectious virus. Our results suggest that the impact of CKI-α in the HCV life cycle is more profound on virion assembly than viral replication via mediation of NS5A hyperphosphorylation. CKI-α-dependent hyperphosphorylation of NS5A plays a role in recruiting NS5A to low-density membrane structures around LDs and facilitating its interaction with the core for new virus particle formation. By using proteomic approach, we identified the region within the low-complexity sequence I of NS5A that is involved in NS5A hyperphosphorylation and hyperphosphorylation-dependent regulation of infectious virus production. These findings will provide novel mechanistic insights into the roles of NS5A-associated kinases and NS5A phosphorylation in the HCV life cycle.
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Nagayoshi Y, Nakamura M, Matsuoka K, Ohtsuka T, Mori Y, Kono H, Aso T, Ideno N, Takahata S, Ryo A, Takeda H, Ito T, Oda Y, Endo Y, Sawasaki T, Tanaka M. Profiling of autoantibodies in sera of pancreatic cancer patients. Ann Surg Oncol 2014; 21 Suppl 3:S459-65. [PMID: 24585405 DOI: 10.1245/s10434-014-3574-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Indexed: 12/17/2022]
Abstract
BACKGROUND Although autoantibodies to cancer antigens are candidates for biomarkers, no comprehensive studies to detect cancer-specific antibodies have been performed. This study identified autoantibodies in the sera of pancreatic cancer (PC) patients using proteomics based on a wheat germ cell-free protein production system. METHODS We constructed a biotinylated protein library of 2,183 genes. Interactions between biotinylated proteins and serum antibodies were detected by AlphaScreen® assay. Relative luminescence signals of each protein in 37 PC patients and 20 healthy controls were measured, and their sensitivity and specificity for PC were calculated. RESULTS Luminescence signals of nine proteins were significantly higher than those of healthy controls, with calcium and integrin binding 1 (CIB1) protein showing the greatest significance (p = 0.002). Sensitivity, specificity, positive predictive value and negative predictive value of CIB1 autoantibody alone for PC were 76, 70, 82, and 61 %, respectively, and 97, 35, 74, and 88 %, respectively, when the four most significant proteins were combined. Presence of these autoantibodies did not vary significantly with other clinicopathological characteristics. CONCLUSION Several autoantibodies, including CIB1, are potential biomarkers for PC.
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Affiliation(s)
- Yosuke Nagayoshi
- Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Takahashi H, Takahashi C, Moreland NJ, Chang YT, Sawasaki T, Ryo A, Vasudevan SG, Suzuki Y, Yamamoto N. Establishment of a robust dengue virus NS3-NS5 binding assay for identification of protein-protein interaction inhibitors. Antiviral Res 2012; 96:305-14. [PMID: 23072882 DOI: 10.1016/j.antiviral.2012.09.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 09/12/2012] [Accepted: 09/12/2012] [Indexed: 02/07/2023]
Abstract
Whereas the dengue virus (DENV) non-structural (NS) proteins NS3 and NS5 have been shown to interact in vitro and in vivo, the biological relevance of this interaction in viral replication has not been fully clarified. Here, we first applied a simple and robust in vitro assay based on AlphaScreen technology in combination with the wheat-germ cell-free protein production system to detect the DENV-2 NS3-NS5 interaction in a 384-well plate. The cell-free-synthesized NS3 and NS5 recombinant proteins were soluble and in possession of their respective enzymatic activities in vitro. In addition, AlphaScreen assays using the recombinant proteins detected a specific interaction between NS3 and NS5 with a robust Z' factor of 0.71. By employing the AlphaScreen assay, we found that both the N-terminal protease and C-terminal helicase domains of NS3 are required for its association with NS5. Furthermore, a competition assay revealed that the binding of full-length NS3 to NS5 was significantly inhibited by the addition of an excess of NS3 protease or helicase domains. Our results demonstrate that the AlphaScreen assay can be used to discover novel antiviral agents targeting the interactions between DENV NS proteins.
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Affiliation(s)
- Hirotaka Takahashi
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Center for Translational Medicine, 14 Medical Drive, #15-02, Level 15, Singapore 117599, Singapore.
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Mizutani Y, Matsuoka K, Takeda H, Shiogama K, Inada KI, Hayakawa K, Yamada H, Miyazaki T, Sawasaki T, Endo Y, Tsutsumi Y. Novel approach to identifying autoantibodies in rheumatoid synovitis with a biotinylated human autoantigen library and the enzyme-labeled antigen method. J Immunol Methods 2012; 387:57-70. [PMID: 23044167 DOI: 10.1016/j.jim.2012.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 09/17/2012] [Accepted: 09/26/2012] [Indexed: 11/18/2022]
Abstract
Synovial tissue in rheumatoid arthritis (RA) shows dense infiltration of plasmacytes. The purpose of the present study is to identify and localize autoantibodies produced in these immunocytes in RA synovitis. We developed a novel screening system for detecting specific autoantigens. Protein antigens recognized by antibodies in the serum and synovial tissue extract from five RA patients were screened with the AlphaScreen method. For screening, a biotinylated human autoantigen library was constructed by the wheat germ cell-free protein synthesis system. The AlphaScreen analysis of 2183 proteins detected a limited number of antigens reactive with the serum and synovial tissue extract. Eighteen biotinylated proteins, containing top five showing high signals in each synovitis tissue extract, were utilized as probes for the enzyme-labeled antigen method, in order to visualize the site of specific antibody production in synovial lesions. Specific antibodies against two proteins, tripartite motif-containing 21 (TRIM21, also known as SSA/Ro52) and F-box only protein 2 (FBXO2), were visualized in the cytoplasm of plasmacytes in two RA synovitis lesions, respectively. Absorption experiments using unlabeled proteins confirmed the specificity of staining. No positive signals against these two proteins were identified in the additionally evaluated RA and osteoarthritis synovial lesions. The present study indicated 1) the usefulness of screening the human autoantigen library with the AlphaScreen assay for detecting autoantibodies in RA synovitis, and 2) the applicability of biotinylated proteins to the enzyme-labeled antigen method for visualizing the site of autoantibody production within the lesion.
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Affiliation(s)
- Yasuyoshi Mizutani
- Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Molecular and enzymatic characterization of XMRV protease by a cell-free proteolytic analysis. J Proteomics 2012; 75:4863-73. [PMID: 22687250 DOI: 10.1016/j.jprot.2012.05.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 05/24/2012] [Accepted: 05/31/2012] [Indexed: 12/11/2022]
Abstract
Xenotropic murine leukemia virus-related virus (XMRV) is a virus generated under artificial conditions by the recombination of 2 murine leukemia virus (MLV) proviruses, PreXMRV-1 and PreXMRV-2, during the in vivo passage of human prostate cancer cells in athymic nude mice. The molecular etiology of XMRV infection has not been characterized and its implication in human prostate cancer progression remains equivocal. As a step toward resolving this issue we developed an in vitro enzymatic assay system to characterize XMRV protease (PR)-mediated cleavage of host-cell proteins. Enzymatically-active XMRV PR protein was synthesized using a wheat-germ cell-free system. By monitoring cleavage activity of XMRV PR by AlphaScreen and 2-color immunoblot analyses, we revealed that the catalytic activity of XMRV PR is selectively blocked by the HIV PR inhibitor, Amprenavir, and identified several human tumor suppressor proteins, including PTEN and BAX, to be substrates of XMRV PR. This system may provide an attractive means for analyzing the function of retrovirus proteases and provide a technology platform for drug screening.
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Nemoto K, Seto T, Takahashi H, Nozawa A, Seki M, Shinozaki K, Endo Y, Sawasaki T. Autophosphorylation profiling of Arabidopsis protein kinases using the cell-free system. PHYTOCHEMISTRY 2011; 72:1136-44. [PMID: 21477822 DOI: 10.1016/j.phytochem.2011.02.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 02/19/2011] [Accepted: 02/24/2011] [Indexed: 05/20/2023]
Abstract
Protein phosphorylation is one of the main process in the signal transduction pathway. In recent years, there has been increasing attention to plant phosphorylation signaling and many laboratories are trying to elucidate pathways using various approaches. Although more than 1000 protein kinase (PK) genes have been annotated in the Arabidopsis genome, biochemical characterization of those PKs is limited. In this work, we demonstrate high-throughput profiling of serine/threonine autophosphorylation activity by a combination of the 759N-terminal biotinylated proteins library, produced using a wheat germ cell-free protein production system, and a commercially available luminescence system. Luminescent analysis revealed that 179 of the 759 PKs had autophosphorylation activity. From these 179 PKs, 67 of the most active PKs were analyzed to determine their function using the PlantP database. This analysis revealed that 35 (53%) of the proteins were classified as non-transmembrane protein kinases, and 15 (23%) were receptor-like protein kinases. Additionally, PKs from Group 4.4-MAP3K, Group 1.6, Group 4.5-MAPK/CDC/CK2/GSK kinases and Group 1.10-receptor like cytoplasmic kinases contained the highest percentage of autophosphorylated activity. Next, to get a better overview of the annotated 67 PKs, we used the gene ontology annotation search on the TAIR website to classify the 67 PKs into functional category. As a result, some of these PKs may be involved in phospho-signaling pathways such as signal transduction, stress response, and the regulation of cell division. Information from this study may shed light on many unknown plant PKs. This study will be a basis for understanding the function of PKs in phosphorylation network for future research.
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Affiliation(s)
- Keiichirou Nemoto
- Cell-Free Science and Technology Research Center, Ehime University, Matsuyama 790-8577, Japan
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Tsuge S, Mizutani Y, Matsuoka K, Sawasaki T, Endo Y, Naruishi K, Maeda H, Takashiba S, Shiogama K, Inada KI, Tsutsumi Y. Specific in situ visualization of plasma cells producing antibodies against Porphyromonas gingivalis in gingival radicular cyst: application of the enzyme-labeled antigen method. J Histochem Cytochem 2011; 59:673-89. [PMID: 21525188 DOI: 10.1369/0022155411408906] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The enzyme-labeled antigen method was applied to visualize plasma cells producing antibodies to Porphyromonas gingivalis, flora of the human oral cavity. Antibodies to P. gingivalis have reportedly been detected in sera of patients with periodontitis. Biotinylated bacterial antigens, Ag53, and four gingipain domains (Arg-pro, Arg-hgp, Lys-pro, and Lys-hgp) were prepared by the cell-free protein synthesis system using the wheat germ extract. In paraformaldehyde-fixed frozen sections of rat lymph nodes experimentally immunized with Ag53-positive and Ag53-negative P. gingivalis, plasma cells were labeled with biotinylated Arg-hgp and Lys-hgp. Antibodies to Ag53 were detected only in the nodes immunized with Ag53-positive bacteria. In two of eight lesions of gingival radicular cyst with inflammatory infiltration, CD138-positive plasma cells in frozen sections were signalized for Arg-hgp and Lys-hgp. An absorption study using unlabeled antigens confirmed the specificity of staining. The AlphaScreen method identified the same-type antibodies in tissue extracts but not in sera. Antibodies to Ag53, Arg-pro, and Lys-pro were undetectable. In two cases, serum antibodies to Arg-hgp and Lys-hgp were AlphaScreen positive, whereas plasma cells were scarcely observed within the lesions. These findings indicate the validity of the enzyme-labeled antigen method. This is the very first application of this novel histochemical technique to human clinical samples.
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Affiliation(s)
- Shinya Tsuge
- Department of Pathology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Akagi T, Shimizu K, Takahama S, Iwasaki T, Sakamaki K, Endo Y, Sawasaki T. Caspase-8 cleavage of the interleukin-21 (IL-21) receptor is a negative feedback regulator of IL-21 signaling. FEBS Lett 2011; 585:1835-40. [DOI: 10.1016/j.febslet.2011.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/05/2011] [Accepted: 04/13/2011] [Indexed: 02/02/2023]
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Takai K, Sawasaki T, Endo Y. Chapter 2. Development of key technologies for high-throughput cell-free protein production with the extract from wheat embryos. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2011; 75:53-84. [PMID: 20731989 DOI: 10.1016/s0065-3233(07)75002-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
The cell-free translation system from wheat embryos had been considered to be inefficient as compared with the E. coli cell-based and cell-free protein production methods. However, it was revealed that the extract from extensively washed wheat embryo particles can provide a very productive cell-free protein synthesis system. Since then, the method has been improved, so that it fits the postgenomic researches. New mRNA configurations enabled us to synthesize many different proteins in parallel and to prepare large amounts of proteins, which fits the need for screening of suitable proteins for structural and functional analyses before large-scale production. The new reaction formats promoted the developments of new machines that perform highly parallel and highly productive protein synthesis reactions automatically. It was revealed that, by parallel synthesis of many proteins, much more multidomain proteins are produced in soluble forms in the wheat system than in the prokaryotic systems. The wheat system provides a rapid and cost-effective method for stable isotope labeling of proteins for NMR analyses. Selenomethionine substitution of proteins for X-ray crystallography through the cell-free synthesis was also achieved. Synthesis of some families of proteins that were difficult to be produced by conventional methods has been tested. At least, cytotoxic restriction enzymes were readily produced in a large amount. Some multisubunit proteins and cofactor-binding proteins could be synthesized by the method and were characterized successfully. Membrane proteins have also been tested, and a transporter was synthesized in an active form. Although some issues remains to be solved, we expect that the wheat cell-free protein synthesis system can contribute to the structural and functional genomics and to the future understanding of life.
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Affiliation(s)
- Kazuyuki Takai
- Cell-Free Science and Technology Research Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
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Characterization of a caspase-3-substrate kinome using an N- and C-terminally tagged protein kinase library produced by a cell-free system. Cell Death Dis 2010; 1:e89. [PMID: 21368862 PMCID: PMC3035903 DOI: 10.1038/cddis.2010.65] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Caspase-3 (CASP3) cleaves many proteins including protein kinases (PKs). Understanding the relationship(s) between CASP3 and its PK substrates is necessary to delineate the apoptosis signaling cascades that are controlled by CASP3 activity. We report herein the characterization of a CASP3-substrate kinome using a simple cell-free system to synthesize a library that contained 304 PKs tagged at their N- and C-termini (NCtagged PKs) and a luminescence assay to report CASP3 cleavage events. Forty-three PKs, including 30 newly identified PKs, were found to be CASP3 substrates, and 28 cleavage sites in 23 PKs were determined. Interestingly, 16 out of the 23 PKs have cleavage sites within 60 residues of their N- or C-termini. Furthermore, 29 of the PKs were cleaved in apoptotic cells, including five that were cleaved near their termini in vitro. In total, approximately 14% of the PKs tested were CASP3 substrates, suggesting that CASP3 cleavage of PKs may be a signature event in apoptotic-signaling cascades. This proteolytic assay method would identify other protease substrates.
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Matsuoka K, Komori H, Nose M, Endo Y, Sawasaki T. Simple screening method for autoantigen proteins using the N-terminal biotinylated protein library produced by wheat cell-free synthesis. J Proteome Res 2010; 9:4264-73. [PMID: 20575507 PMCID: PMC2917173 DOI: 10.1021/pr9010553] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Indexed: 11/30/2022]
Abstract
Autoimmune diseases are a heterogeneous group of diseases characterized by immune reactions against either a major or a limited number of the bodies own autoantigens, causing inflammation and damage to tissues and organs. Thus, identification of autoantigens is an important first step to understanding autoimmune diseases. Here we demonstrate a simple screening method for identification of autoantigens reacting with patient serum antibodies by combination of an N-terminal biotinylated protein library (BPL), produced using a wheat cell-free protein production system, and a commercially available luminescence system. Optimization studies using well-characterized autoantigens showed specific interactions between N-terminal biotinylated proteins and antibody that were sensitively detected under homogeneous reaction conditions. In this optimized assay, 1 microL of the translation mixture expressing the biotinylated proteins produced significant luminescence signal by addition of diluted serum between 1:500 and 1:10 000 in 25 microL of reaction volume. For the BPL construction, 214 mouse genes, consisting of 103 well-known autoantigens and 111 genes in the mouse autoimmune susceptibility loci, and the sera of MRL/lpr mouse were used as an autoimmune model. By this screening method, 25 well-known autoantigens and 71 proteins in the loci were identified as autoantigen proteins specifically reacting with sera antibodies. Cross-referencing with the Gene Ontology Database, 26 and 38 of autoantigen proteins were predicted to have nuclear localization and identified as membrane and/or extracellular proteins. The immune reaction of six randomly selected proteins was confirmed by immunoprecipitation and/or immunoblot analyses. Interestingly, three autoantigen proteins were recognized by immunoprecipitation but not by immunoblot analysis. These results suggest that the BPL-based method could provide a simple system for screening of autoantigen proteins and would help with identification of autoantigen proteins reacting with antibodies that recognize folded proteins, rather than denatured or unfolded forms.
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Affiliation(s)
| | | | | | - Yaeta Endo
- To whom correspondence should be addressed. Yaeta Endo, Cell-Free Science and Technology Research Center, Ehime University, Bunkyo-cho, 3-ban, Matsuyama 790-8577, Japan. Tel. +81-89-927-9936. Fax +81-89-927-9941. E-mail . Tatsuya Sawasaki, Cell-Free Science and Technology Research Center, Ehime University, Bunkyo-cho, 3-ban, Matsuyama 790-8577, Japan. Tel. +81-89-927-8530. Fax +81-89-927-9941. E-mail
| | - Tatsuya Sawasaki
- To whom correspondence should be addressed. Yaeta Endo, Cell-Free Science and Technology Research Center, Ehime University, Bunkyo-cho, 3-ban, Matsuyama 790-8577, Japan. Tel. +81-89-927-9936. Fax +81-89-927-9941. E-mail . Tatsuya Sawasaki, Cell-Free Science and Technology Research Center, Ehime University, Bunkyo-cho, 3-ban, Matsuyama 790-8577, Japan. Tel. +81-89-927-8530. Fax +81-89-927-9941. E-mail
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