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Kariya M, Omoto K, Nomura K, Yonezawa K, Kamikubo H, Nishino T, Inoie T, Rapenne G, Yasuhara K. Lipid cubic phase with an organic-inorganic hybrid structure formed by organoalkoxysilane lipid. Chem Commun (Camb) 2024; 60:2168-2171. [PMID: 38205510 DOI: 10.1039/d3cc05167f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
A lipid cubic phase encompassing a cross-linked siloxane structure was formed by the self-assembly of a synthetic organoalkoxysilane lipid in water. The spontaneous sol-gel reaction of the alkoxysilane moiety on the lipid head group produced an organic-inorganic hybrid material with a double gyroid Ia3d cubic structure.
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Affiliation(s)
- Miki Kariya
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
| | - Kenichiro Omoto
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
| | - Kaoru Nomura
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto, 619-0284, Japan
| | - Kento Yonezawa
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
- Center for Digital Green-innovation, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
| | - Hironari Kamikubo
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
- Center for Digital Green-innovation, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
| | - Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
| | - Tomomi Inoie
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
- CEMES-CNRS, Université de Toulouse, CNRS, 29 Rue Marvig, F-31055 Toulouse Cedex 4, France
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan.
- Center for Digital Green-innovation, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
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2
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Subramaniam JD, Nishino T, Yasuhara K, Rapenne G. Synthesis and Dynamic Behavior of Ce(IV) Double-Decker Complexes of Sterically Hindered Phthalocyanines. Molecules 2024; 29:888. [PMID: 38398640 PMCID: PMC10891708 DOI: 10.3390/molecules29040888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
Phthalocyanines and their double-decker complexes are interesting in designing rotative molecular machines, which are crucial for the development of molecular motors and gears. This study explores the design and synthesis of three bulky phthalocyanine ligands functionalized at the α-positions with phenothiazine or carbazole fragments, aiming to investigate dynamic rotational motions in these sterically hindered molecular complexes. Homoleptic and heteroleptic double-decker complexes were synthesized through the complexation of these ligands with Ce(IV). Notably, CeIV(Pc2)2 and CeIV(Pc3)2, both homoleptic complexes, exhibited blocked rotational motions even at high temperatures. The heteroleptic CeIV(Pc)(Pc3) complex, designed to lower symmetry, demonstrated switchable rotation along the pseudo-C4 symmetry axis upon heating the solution. Variable-temperature 1H-NMR studies revealed distinct dynamic behaviors in these complexes. This study provides insights into the rotational dynamics of sterically hindered double-decker complexes, paving the way for their use in the field of rotative molecular machines.
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Affiliation(s)
- Jeevithra Dewi Subramaniam
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
- Center for Digital Green-Innovation, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
- Centre d’Elaboration de Matériaux et d’Etudes Structurale, Université de Toulouse, CNRS, 29, Rue Marvig, 31055 Toulouse, France
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3
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Hao J, Ishihara M, Rapenne G, Yasuhara K. Lipid nanodiscs spontaneously formed by an amphiphilic polymethacrylate derivative as an efficient nanocarrier for molecular delivery to intact cells. RSC Adv 2024; 14:6127-6134. [PMID: 38375006 PMCID: PMC10875731 DOI: 10.1039/d3ra07481a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/06/2024] [Indexed: 02/21/2024] Open
Abstract
There is a great demand for the technology of molecular delivery into living cells using nanocarriers to realise molecular therapies such as gene delivery and drug delivery systems. Lipid-based nanocarriers offer several advantages for molecular delivery in biological systems, such as easy preparation, high encapsulation efficiency of water-insoluble drug molecules, and excellent biocompatibility. In this paper, we first report the interaction of lipid nanodiscs spontaneously formed by the complexation of an amphiphilic polymethacrylate derivative and phospholipid with intact cells. We evaluated the internalisation of polymethacrylate-based lipid nanodiscs by intact HeLa cells and applied them to the delivery of paclitaxel (PTX), an anticancer drug. The lipid nanodisc showed excellent uptake efficiency compared to conventional liposomes at a concentration where nanodiscs do not show cytotoxicity. In addition, the nanodisc encapsulating PTX showed significantly higher anticancer activity than PTX-loaded liposomes against HeLa cells, reflecting their excellent activity in delivering payloads to intact cells. This study demonstrated the potential of a polymethacrylate-based lipid nanodisc as a novel nanocarrier for molecular delivery to intact cells.
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Affiliation(s)
- Jinyu Hao
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Mika Ishihara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Gwénaël Rapenne
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma 630-0192 Japan
- CEMES-CNRS, Université de Toulouse, CNRS 29 Rue Marvig F-31055 Toulouse Cedex 4 France
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma 630-0192 Japan
- Centre for Digital Green-innovation, Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma 630-0192 Japan
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4
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Murai T, Masaki Y, Yasuhara K. Curcumin Modulates the Membrane Raft Integrity via Phase Separation and Induces CD44 Shedding in Tumor Cells. Biochemistry 2024. [PMID: 38252070 DOI: 10.1021/acs.biochem.3c00645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
CD44 is a transmembrane cell adhesion molecule that is cleaved by the membrane proteinase, a disintegrin and metalloproteinase 10 (ADAM10), on the cell surface via ectodomain shedding after cholesterol depletion. Lipid raft-mediated CD44 shedding is essential for cancer cell invasion. As cell-cell and cell-matrix adhesions are critical for cancer progression, lipid raft-targeting agents may be effective for cancer therapy. Here, we found that curcumin and its derivatives induced the ADAM10-mediated shedding of CD44 in tumor cells. We also found that curcumin and the derivatives are membrane-active compounds whose effect depends on its planar backbone and the spatial arrangement of methoxy groups substituted on the two aromatic rings using giant unilamellar and plasma membrane vesicles. Curcumin and its derivatives with rigid backbones and hydroxy groups exerted membrane-domain-modulating activity, which may account for their pleiotropic effects via multiple signaling pathways involving membrane receptors. This study provides a basis for the use of membrane-active compounds, such as curcuminoids, to elucidate the roles of lipid rafts in cellular signaling, regulation of membrane-bound ADAM metalloproteinases, and the development of novel membrane lipid-based therapies.
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Affiliation(s)
- Toshiyuki Murai
- Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshikazu Masaki
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma 630-0192, Japan
- Center for Digital Green-Innovation, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma 630-0192, Japan
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5
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Kawasaki R, Oshige A, Yamana K, Hirano H, Nishimura K, Miura Y, Yorioka R, Sanada Y, Bando K, Tabata A, Yasuhara K, Miyazaki Y, Shinoda W, Nishimura T, Azuma H, Takata T, Sakurai Y, Tanaka H, Suzuki M, Nagasaki T, Ikeda A. HER-2-Targeted Boron Neutron Capture Therapy with Carborane-integrated Immunoliposomes Prepared via an Exchanging Reaction. Chemistry 2023; 29:e202302486. [PMID: 37792507 DOI: 10.1002/chem.202302486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/09/2023] [Accepted: 10/04/2023] [Indexed: 10/06/2023]
Abstract
Boron neutron capture therapy (BNCT) is a promising modality for cancer treatment because of its minimal invasiveness. To maximize the therapeutic benefits of BNCT, the development of efficient platforms for the delivery of boron agents is indispensable. Here, carborane-integrated immunoliposomes were prepared via an exchanging reaction to achieve HER-2-targeted BNCT. The conjugation of an anti-HER-2 antibody to carborane-integrated liposomes successfully endowed these liposomes with targeting properties toward HER-2-overexpressing human ovarian cancer cells (SK-OV3); the resulting BNCT activity toward SK-OV3 cells obtained using the current immunoliposomal system was 14-fold that of the l-BPA/fructose complex, which is a clinically available boron agent. Moreover, the growth of spheroids treated with this system followed by thermal neutron irradiation was significantly suppressed compared with treatment with the l-BPA/fructose complex.
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Affiliation(s)
- Riku Kawasaki
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Ayano Oshige
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Keita Yamana
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Hidetoshi Hirano
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Kotaro Nishimura
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Yamato Miura
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Ryuji Yorioka
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Yu Sanada
- Institute for Integrated Radiation and Nuclear Science, Kyoto University Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Kaori Bando
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka city, 558-8585, Japan
| | - Anri Tabata
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka city, 558-8585, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology and Center for Digital Green-Innovation, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara, 630-0192, Japan
| | - Yusuke Miyazaki
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushuma-naka, Kita-ku, Okayama, 700-8530, Japan
| | - Wataru Shinoda
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushuma-naka, Kita-ku, Okayama, 700-8530, Japan
| | - Tomoki Nishimura
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, 386-8567, Japan
| | - Hideki Azuma
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka city, 558-8585, Japan
| | - Takushi Takata
- Institute for Integrated Radiation and Nuclear Science, Kyoto University Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Yoshinori Sakurai
- Institute for Integrated Radiation and Nuclear Science, Kyoto University Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Hiroki Tanaka
- Institute for Integrated Radiation and Nuclear Science, Kyoto University Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Takeshi Nagasaki
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka city, 558-8585, Japan
| | - Atsushi Ikeda
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
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6
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Nishino T, Fukumura M, Katao S, Yasuhara K, Rapenne G. Multiply engaged molecular gears composed of a cerium(IV) double-decker of a triptycene-functionalized porphyrin. Dalton Trans 2023; 52:11797-11801. [PMID: 37593796 DOI: 10.1039/d3dt02443a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Intramolecular gearing motions are studied in a cerium(IV) double-decker of triptycene-functionalised porphyrins using single crystal X-ray analysis and variable temperature 1H-NMR.
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Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
| | - Masafumi Fukumura
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
| | - Shohei Katao
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
- Centre of Digital Green-Inovation, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, Japan
- CEMES, Université de Toulouse, CNRS, 29, rue Jeanne Marvig, 31055 Toulouse, France.
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7
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Omoto K, Shi M, Yasuhara K, Kammerer C, Rapenne G. Extended Tripodal Hydrotris(indazol-1-yl)borate Ligands as Ruthenium-Supported Cogwheels for On-Surface Gearing Motions. Chemistry 2023; 29:e202203483. [PMID: 36695199 DOI: 10.1002/chem.202203483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/22/2023] [Accepted: 01/25/2023] [Indexed: 01/26/2023]
Abstract
This paper reports the synthesis of ruthenium-based molecular gear prototypes composed of a brominated or non-brominated pentaphenylcyclopentadienyl ligand as an anchoring unit and a tripodal ligand with aryl-functionalized indazoles as a rotating cogwheel. Single crystal structures of the ruthenium complexes revealed that the appended aryl groups increase the apparent diameter of the cogwheel rendering them larger than the diameter of the anchoring units and consequently making them suitable for intermolecular gearing motions once the complexes will be adsorbed on a surface.
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Affiliation(s)
- Kenichiro Omoto
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan
| | - Menghua Shi
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan.,Center for Digital Green-innovation, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, 630-0192, Japan.,CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
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8
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Takahashi H, Sovadinova I, Yasuhara K, Vemparala S, Caputo GA, Kuroda K. Biomimetic antimicrobial polymers—Design, characterization, antimicrobial, and novel applications. WIREs Nanomed Nanobiotechnol 2022; 15:e1866. [PMID: 36300561 DOI: 10.1002/wnan.1866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/15/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
Biomimetic antimicrobial polymers have been an area of great interest as the need for novel antimicrobial compounds grows due to the development of resistance. These polymers were designed and developed to mimic naturally occurring antimicrobial peptides in both physicochemical composition and mechanism of action. These antimicrobial peptide mimetic polymers have been extensively investigated using chemical, biophysical, microbiological, and computational approaches to gain a deeper understanding of the molecular interactions that drive function. These studies have helped inform SARs, mechanism of action, and general physicochemical factors that influence the activity and properties of antimicrobial polymers. However, there are still lingering questions in this field regarding 3D structural patterning, bioavailability, and applicability to alternative targets. In this review, we present a perspective on the development and characterization of several antimicrobial polymers and discuss novel applications of these molecules emerging in the field. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
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Affiliation(s)
- Haruko Takahashi
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
| | - Iva Sovadinova
- RECETOX, Faculty of Science Masaryk University Brno Czech Republic
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology Nara Institute of Science and Technology Nara Japan
- Center for Digital Green‐Innovation Nara Institute of Science and Technology Nara Japan
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences CIT Campus Chennai India
- Homi Bhabha National Institute Training School Complex Mumbai India
| | - Gregory A. Caputo
- Department of Chemistry & Biochemistry Rowan University Glassboro New Jersey USA
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry University of Michigan Ann Arbor Michigan USA
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9
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Yasuhara K, Morigaki K. Creation of supramolecular biomembrane by the bottom-up self-assembly: Where material science meets biophysics. Biophys Physicobiol 2022; 19:e190043. [PMID: 36567734 PMCID: PMC9751256 DOI: 10.2142/biophysico.bppb-v19.0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/18/2022] [Indexed: 11/08/2022] Open
Affiliation(s)
- Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan,Center for Digital Green-innovation, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kenichi Morigaki
- Biosignal Research Center, Kobe University, Kobe, Hyogo 657-8501, Japan,Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo 657-8501, Japan
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10
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Yamada H, Yamana K, Kawasaki R, Yasuhara K, Ikeda A. Cyclodextrin-induced release of drug-entrapping liposomes associated with the solation of liposome gels. RSC Adv 2022; 12:22202-22209. [PMID: 36043077 PMCID: PMC9364157 DOI: 10.1039/d2ra03837d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 07/27/2022] [Indexed: 11/23/2022] Open
Abstract
In this work, we demonstrate that liposome gels in which liposomes are connected by polyethylene glycol terminated by cholesterol groups at both ends can store hydrophilic and hydrophobic drugs in the gel interiors, inner aqueous phases, and lipid membranes. The addition of cyclodextrins (CDxs) as extrinsic stimuli led to the release of drug-entrapping liposomes due to the interactions between CDxs and cholesteryl groups and/or the alkyl chains of lipids. The addition of aqueous solutions of β-CDx, dimethyl-β-CDx, trimethyl-β-CDx, and γ-CDx (final concentration: 7.5 mM) induced the solation of liposome gels and the release of liposomes accompanying the solation. Furthermore, the addition of β-CDx led to the partial release of hydrophilic drugs encapsulated in the liposomes, although the drug release was scarcely observed in other CDxs. In particular, the addition of trimethyl-β-CDx, which has low cytotoxicity, accelerated solation, and cationic liposomes released from the gels were effectively taken up by murine colon cancer (Colon26) cells. Thus, we propose that liposomes released from liposome gels can function as drug carriers. The solation of liposome gels owing to the addition of trimethyl-β-cyclodextrin (TMe-β-CDx) and the uptake of cationic liposomes released from liposome gels by Colon26 cells are demonstrated.![]()
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Affiliation(s)
- Hiromu Yamada
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Keita Yamana
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Riku Kawasaki
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology and Center for Digital Green-innovation, Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Atsushi Ikeda
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
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11
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Shimanouchi T, Sano Y, Yasuhara K, Kimura Y. Amyloid-β aggregates induced by β-cholesteryl glucose-embedded liposomes. Biochim Biophys Acta Proteins Proteom 2022; 1870:140816. [PMID: 35777623 DOI: 10.1016/j.bbapap.2022.140816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/03/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Senile plaques that is characterized as an amyloid deposition found in Alzheimer's disease are composed primarily of fibrils of an aggregated peptide, amyloid β (Aβ). The ability to monitor senile plaque formation on a neuronal membrane under physiological conditions provides an attractive model. In this study, the growth behavior of amyloid Aβ fibrils in the presence of liposomes incorporating β-cholesteryl-D-glucose (β-CG) was examined using total internal reflection fluorescence microscopy, transmittance electron microscopy, and other spectroscopic methods. We found that β-CG on the liposome membrane induced the spontaneous formation of spherulitic Aβ fibrillar aggregates. The β-CG cluster formed on liposome membranes appeared to induce the accumulation of Aβ, followed by the growth of the spherulitic Aβ aggregates. In contrast, DMPC and DMPC incorporated cholesterol-induced fibrils that are laterally associated with each other. A comparison study using three types of liposomes implied that the induction of glucose contributed to the agglomeration of Aβ fibrils and liposomes. This agglomeration required the spontaneous formation of spherulitic Aβ fibrillary aggregates. This action can be regarded as a counterbalance to the growth of fibrils and their toxicity, which has great potential in the study of amyloidopathies.
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Affiliation(s)
- Toshinori Shimanouchi
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, kita-kku, Okayama 700-8530, Japan.
| | - Yasuhiro Sano
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, kita-kku, Okayama 700-8530, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Yukitaka Kimura
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, kita-kku, Okayama 700-8530, Japan
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12
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Komatsu R, Tanimoto Y, Ando K, Yasuhara K, Iwasaki Y, Hayashi F, Morigaki K. Nanofluidic Model Membrane for the Single-Molecule Observation of Membrane Proteins. Langmuir 2022; 38:7234-7243. [PMID: 35641430 DOI: 10.1021/acs.langmuir.2c00724] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Membrane proteins play essential roles in the cell, and they constitute one of the most important targets of drugs. Studying membrane proteins in a controlled model membrane environment can provide unambiguous, quantitative information on their molecular properties and functions. However, reconstituting membrane proteins in a model system poses formidable technological challenges. Here, we developed a novel model membrane platform for highly sensitive observation of membrane proteins by combining a micropatterned lipid membrane and a nanofluidic channel. A micropatterned model membrane was generated by lithographically integrating a polymerized lipid bilayer and a natural (fluid) lipid bilayer. A nanofluidic channel having a defined thickness was formed between the fluid bilayer and a polydimethylsiloxane (PDMS) slab by attaching the polymeric bilayer and PDMS slab using an adhesion layer composed of silica nanoparticles that are coated with a biocompatible polymer brush. As we reconstituted rhodopsin (Rh), a G-protein-coupled receptor (GPCR), from a detergent-solubilized state into the fluid bilayer, only successfully reconstituted Rh molecules diffused laterally in the lipid bilayer and migrated into the nanogap junction, where they could be observed with a vastly improved signal-to-background ratio. The nanogap junction effectively separates the sites of reconstitution and observation and provides a novel platform for studying the molecular properties and functions of membrane proteins at the single-molecular level.
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Affiliation(s)
- Ryota Komatsu
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Yasushi Tanimoto
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Koji Ando
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
- Center for Digital Green-innovation, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Yasuhiko Iwasaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita 564-0836, Japan
| | - Fumio Hayashi
- Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Kenichi Morigaki
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
- Biosignal Research Center, Kobe University, Kobe 657-8501, Japan
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13
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Yasuhara K, Tsukamoto M, Kikuchi JI, Kuroda K. An Antimicrobial Peptide-Mimetic Methacrylate Random Copolymer Induces Domain Formation in a Model Bacterial Membrane. J Membr Biol 2022; 255:513-521. [PMID: 35182193 DOI: 10.1007/s00232-022-00220-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/04/2022] [Indexed: 10/19/2022]
Abstract
To address the emerging issue of drug-resistant bacteria, membrane-active synthetic polymers have been designed and developed to mimic host-defense antimicrobial peptides (AMPs) as antibiotic alternatives. In this study, we investigated the domain formation induced by synthetic polymer mimics of AMPs using model membranes to elucidate the biophysical principles that govern their membrane-active mechanisms. To that end, lipid vesicles mimicking Escherichia coli (E. coli) membrane were prepared using an 8:2 (molar ratio) mixture of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1'-rac-glycerol), sodium salt (POPG). Our studies using differential scanning calorimetry (DSC) and fluorescence microscopy indicated that cationic amphiphilic methacrylate random copolymers induced the phase separation to form POPE- or POPG-rich domains. A rhodamine-labeled polymer also showed the binding to separated domains in the membrane. Based on these results, we propose the mechanism that the copolymers induce domain formation by clustering of anionic POPG lipids similar to natural AMPs. In addition, the time-course of polymer binding to the GUV membrane was sigmoidal, suggesting the positive feedback loop in the membrane binding. We also hypothesize that this cooperative binding of the polymer is driven by the domain formation. This study demonstrates the potential of the amphiphilic copolymers to modulate the lipid organization of cell membranes, which may provide a new strategy to design membrane-active antimicrobial agents.
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Affiliation(s)
- Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 6300192, Japan. .,Center for Digital Green-Innovation, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 6300192, Japan.
| | - Manami Tsukamoto
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 6300192, Japan
| | - Jun-Ichi Kikuchi
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 6300192, Japan
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI, 48109, USA
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14
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Fa S, Tomita T, Wada K, Yasuhara K, Ohtani S, Kato K, Gon M, Tanaka K, Kakuta T, Yamagishi TA, Ogoshi T. CPL on/off control of an assembled system by water soluble macrocyclic chiral sources with planar chirality. Chem Sci 2022; 13:5846-5853. [PMID: 35685810 PMCID: PMC9132087 DOI: 10.1039/d2sc00952h] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/28/2022] [Indexed: 11/21/2022] Open
Abstract
Herein, we report the synthesis and planar chiral properties of a pair of water-soluble cationic pillar[5]arenes with stereogenic carbons. Interestingly, although units of the molecules were rotatable, only one planar chiral diastereomer existed in water in both cases. As a new type of chiral source, these molecules transmitted chiral information from the planar chiral cavities to the assembly of a water-soluble extended π-conjugated compound, affording circularly polarized luminescence (CPL). The chirality transfer process and resulting CPL were extremely sensitive to the feed ratio of the chiral pillar[5]arenes owing to the combined action of their planar chirality, bulkiness, and strong binding properties. When a limited amount of chiral source was added, further assembly of the extended π-conjugated compound into helical fibers with CPL was triggered. Unexpectedly, larger amounts of chiral source destroyed the helical fiber assemblies, resulting in elimination of the chirality and CPL properties from the assembled structures. Readily obtained pillar[5]arenes with pure planar chirality enabled CPL on/off control of an assembled system by varying the feed ratio.![]()
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Affiliation(s)
- Shixin Fa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Takuya Tomita
- Graduate School of Natural Science and Technology, Kanazawa University Kakuma-machi Kanazawa Ishikawa 920-1192 Japan
| | - Keisuke Wada
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
- Center for Digital Green-innovation, Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Shunsuke Ohtani
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kenichi Kato
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Takahiro Kakuta
- Graduate School of Natural Science and Technology, Kanazawa University Kakuma-machi Kanazawa Ishikawa 920-1192 Japan
| | - Tada-Aki Yamagishi
- Graduate School of Natural Science and Technology, Kanazawa University Kakuma-machi Kanazawa Ishikawa 920-1192 Japan
| | - Tomoki Ogoshi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University Kakuma-machi Kanazawa Ishikawa 920-1192 Japan
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15
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Omoto K, Aoyama S, Galica T, Nishibori E, Katao S, Yasuhara K, Rapenne G. Thermally responsive morphological change of layered coordination polymer induced by disordering/ordering of flexible alkyl chains. Dalton Trans 2022; 51:17967-17972. [DOI: 10.1039/d2dt03142f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The search for a method to control structural transformations of layered coordination polymers is highly desirable to modulate their properties and functions. Herein, we report the construction of a novel...
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16
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Matsumoto H, Okuichi K, Imamura H, Yasuhara K, Kato M, Koshiyama T. Peptide modification on the interior surface of red blood cell ghosts for construction of catalytic reactors. Chem Commun (Camb) 2022; 58:12220-12223. [DOI: 10.1039/d2cc05013g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report in situ synthesis of gold nanoparticles (Au NPs) on the interior surfaces of red blood cell ghosts (RBCGs) with a cytoskeleton conjugated to a gold-binding peptide and reduction of 4-nitrophenol by the resulting Au NP-deposited RBCG.
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Affiliation(s)
- Honoka Matsumoto
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Kentaro Okuichi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Hiroshi Imamura
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Minoru Kato
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Tomomi Koshiyama
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
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17
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Nishino T, Martin CJ, Yasuhara K, Rapenne G. Nanocars based on Polyaromatic or Porphyrinic Chassis. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.1050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Colin J. Martin
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, NAIST
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18
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Nishimura T, Oyama T, Hu HT, Fujioka T, Hanawa-Suetsugu K, Ikeda K, Yamada S, Kawana H, Saigusa D, Ikeda H, Kurata R, Oono-Yakura K, Kitamata M, Kida K, Hikita T, Mizutani K, Yasuhara K, Mimori-Kiyosue Y, Oneyama C, Kurimoto K, Hosokawa Y, Aoki J, Takai Y, Arita M, Suetsugu S. Filopodium-derived vesicles produced by MIM enhance the migration of recipient cells. Dev Cell 2021; 56:842-859.e8. [PMID: 33756122 DOI: 10.1016/j.devcel.2021.02.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 12/31/2020] [Accepted: 02/23/2021] [Indexed: 12/19/2022]
Abstract
Extracellular vesicles (EVs) are classified as large EVs (l-EVs, or microvesicles) and small EVs (s-EVs, or exosomes). S-EVs are thought to be generated from endosomes through a process that mainly depends on the ESCRT protein complex, including ALG-2 interacting protein X (ALIX). However, the mechanisms of l-EV generation from the plasma membrane have not been identified. Membrane curvatures are generated by the bin-amphiphysin-rvs (BAR) family proteins, among which the inverse BAR (I-BAR) proteins are involved in filopodial protrusions. Here, we show that the I-BAR proteins, including missing in metastasis (MIM), generate l-EVs by scission of filopodia. Interestingly, MIM-containing l-EV production was promoted by in vivo equivalent external forces and by the suppression of ALIX, suggesting an alternative mechanism of vesicle formation to s-EVs. The MIM-dependent l-EVs contained lysophospholipids and proteins, including IRS4 and Rac1, which stimulated the migration of recipient cells through lamellipodia formation. Thus, these filopodia-dependent l-EVs, which we named as filopodia-derived vesicles (FDVs), modify cellular behavior.
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Affiliation(s)
- Tamako Nishimura
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Takuya Oyama
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Hooi Ting Hu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Toshifumi Fujioka
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kyoko Hanawa-Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kazutaka Ikeda
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Cellular and Molecular Epigenetics Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan; Kazusa DNA Research Institute, 2-6-7 Kazusa, kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Sohei Yamada
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Hiroki Kawana
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Daisuke Saigusa
- Tohoku University Tohoku Medical Megabank Organization, 2-1, Seiryo-machi, Aoba-ku, Sendai 980-8573, Japan
| | - Hiroki Ikeda
- Department of Embryology, Nara Medical University, Kashihara 634-0813, Nara, Japan
| | - Rie Kurata
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kayoko Oono-Yakura
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Manabu Kitamata
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Kazuki Kida
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Tomoya Hikita
- Division of Cancer Cell Regulation, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
| | - Kiyohito Mizutani
- Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Yuko Mimori-Kiyosue
- Laboratory for Molecular and Cellular Dynamics, RIKEN Center for Biosystems Dynamics Research, Minatojima-minaminachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Chitose Oneyama
- Division of Cancer Cell Regulation, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan
| | - Kazuki Kurimoto
- Department of Embryology, Nara Medical University, Kashihara 634-0813, Nara, Japan
| | - Yoichiroh Hosokawa
- Division of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Junken Aoki
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Yoshimi Takai
- Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Makoto Arita
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Cellular and Molecular Epigenetics Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan; Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo 105-0011, Japan
| | - Shiro Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan; Data Science Center, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.
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19
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Tsukamoto M, Zappala E, Caputo GA, Kikuchi JI, Najarian K, Kuroda K, Yasuhara K. Mechanistic Study of Membrane Disruption by Antimicrobial Methacrylate Random Copolymers by the Single Giant Vesicle Method. Langmuir 2021; 37:9982-9995. [PMID: 34378943 DOI: 10.1021/acs.langmuir.1c01047] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cationic amphiphilic polymers have been a platform to create new antimicrobial materials that act by disrupting bacterial cell membranes. While activity characterization and chemical optimization have been done in numerous studies, there remains a gap in our knowledge on the antimicrobial mechanisms of the polymers, which is needed to connect their chemical structures and biological activities. To that end, we used a single giant unilamellar vesicle (GUV) method to identify the membrane-disrupting mechanism of methacrylate random copolymers. The copolymers consist of random sequences of aminoethyl methacrylate and methyl (MMA) or butyl (BMA) methacrylate, with low molecular weights of 1600-2100 g·mol-1. GUVs consisting of an 8:2 mixture of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1'-rac-glycerol), sodium salt (POPG) and those with only 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) were prepared to mimic the bacterial (Escherichia coli) or mammalian membranes, respectively. The disruption of bacteria and mammalian cell membrane-mimetic lipid bilayers in GUVs reflected the antimicrobial and hemolytic activities of the copolymers, suggesting that the copolymers act by disrupting cell membranes. The copolymer with BMA formed pores in the lipid bilayer, while that with MMA caused GUVs to burst. Therefore, we propose that the mechanism is inherent to the chemical identity or properties of hydrophobic groups. The copolymer with MMA showed characteristic sigmoid curves of the time course of GUV burst. We propose a new kinetic model with a positive feedback loop in the insertion of the polymer chains in the lipid bilayer. The novel finding of alkyl-dependent membrane-disrupting mechanisms will provide a new insight into the role of hydrophobic groups in the optimization strategy for antimicrobial activity and selectivity.
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Affiliation(s)
- Manami Tsukamoto
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
| | - Emanuele Zappala
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109-2800, United States
| | - Gregory A Caputo
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, New Jersey 08028, United States
| | - Jun-Ichi Kikuchi
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
| | - Kayvan Najarian
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109-2800, United States
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
- Center for Digital Green-innovation, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
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20
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Shimanouchi T, Hayashi T, Toramoto K, Fukuma S, Hayashi K, Yasuhara K, Kimura Y. Microfluidic and hydrothermal preparation of vesicles using sorbitan monolaurate/polyoxyethylene (20) sorbitan monolaurate (Span 20/Tween 20). Colloids Surf B Biointerfaces 2021; 205:111836. [PMID: 34058692 DOI: 10.1016/j.colsurfb.2021.111836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/01/2021] [Accepted: 05/08/2021] [Indexed: 11/18/2022]
Abstract
Here, we present a method for preparing vesicles by combining hydrothermal emulsification with solvent diffusion (SD). The sorbitan monolaurate/polyoxyethylene (20) sorbitan monolaurate (Span 20/Tween 20) system was used as the target lipid because these lipids are cheap and advantageous for the production scale. The water-in-oil (W/O) emulsion stabilized with lipids was formed under hydrothermal conditions (240 °C under 10 MPa), followed by mixing with water that included lipids to obtain a W/O-in-water (W/O/W) emulsion. The SD for the W/O/W emulsion as a subsequent process yielded vesicles. The optimal preparation conditions were 50:50 wt% Span 20/Tween 20 as a mixing ratio (final lipid concentration 12 mM), octanoic acid as an organic solvent, 240 °C for 4 min during the hydrothermal treatment, and 4 °C for 24 h in the SD process. The diameter of the vesicles obtained was at most 100 nm, which was comparable to that of the W/O/W emulsion before SD. This suggested that the W/O/W emulsion acted as a template for vesicle formation. The number density, diameter, and membrane properties of vesicles depend on the mixing ratio of the water/oil/lipid system. Specifically, the number density of vesicles was low relative to that of vesicles prepared by the conventional method.
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Affiliation(s)
- Toshinori Shimanouchi
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama, Okayama, 700-8530, Japan
| | - Tetsuya Hayashi
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama, Okayama, 700-8530, Japan
| | - Kazuki Toramoto
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama, Okayama, 700-8530, Japan
| | - Saki Fukuma
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama, Okayama, 700-8530, Japan
| | - Keita Hayashi
- Department of Chemical Engineering, Nara National College of Technology, 22 Yada-cho, Yamatokohriyama, Nara, 639-1080, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara, 630-0192, Japan
| | - Yukitaka Kimura
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama, Okayama, 700-8530, Japan.
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21
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Koshiyama T, Inoue Y, Asada S, Kawahara K, Ide S, Yasuhara K, Ohba M. pH-Dependent ion permeability control of a modified amphotericin B channel through metal complexation. Chem Commun (Camb) 2021; 57:2895-2898. [PMID: 33606865 DOI: 10.1039/d0cc08368b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphotericin B incorporating 2,2'-bipyridine (bpy-AmB) forms a membrane channel exhibiting pH-dependent Ca2+ ion permeability with a selective response to Cu2+ ions. The coordination structure at bpy sites depends on the pH and metal ions can control the association state of bpy-AmB in the membrane.
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Affiliation(s)
- Tomomi Koshiyama
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga 525-8577, Japan.
| | - Yuki Inoue
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Sana Asada
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Koki Kawahara
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Shogo Ide
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Masaaki Ohba
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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22
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Yasuhara K, Morigaki K. New lipid membrane technologies for reconstitution, analysis, and utilization of 'living' membrane proteins. Biophys Physicobiol 2020; 17:125-129. [PMID: 33240738 PMCID: PMC7671742 DOI: 10.2142/biophysico.bsj-2020021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/01/2022] Open
Affiliation(s)
- Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kenichi Morigaki
- Biosignal Research Center, Kobe University, Kobe, Hyogo 657-8501, Japan.,Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo 657-8501, Japan
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23
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Takaishi A, Kisinoue T, Mori H, Yoshino T, Yamaji T, Yasuhara K, Tanimoto M, Kagawa K, Onishi N, Imai M, Ueeda M. Our unique clinical pathway for congestive heart failure cases required admission achieved a dramatic reduction of their hospitalization period and a significant reduction of readmission with heart fa. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
In recent years, the number of elderly congestive heart failure (CHF) cases has been increasing in Japan with the aging of the population. This tendency is particularly remarkable in rural areas where our facilities are located. After admission with CHF, the hospitalization period (PE) was prolonged due to various complications unique to the elderly, and re-exacerbation of CHF occurred shortly after discharge. Approximately 30% of them were readmitted within one year. From August 2015, for shortening of PE and reduction of CHF readmission through the efficiency of CHF treatment and comprehensive patient education, we had introduced a unique clinical pathway (PATH) that provided the immediate use of Tolvaptan and comprehensive education by multi-disciplinary staff after admission.
Purpose
In this study, we verified whether the improvement of clinical prognosis were achieved by introduction of PATH.
Methods
Between April 2014 and July 2019, 635 CHF cases (764 admissions) ware enrolled. We divided them to two groups, N-group before introducing PATH (198 cases, 262 admissions) and P-group applied PATH (437 cases, 502 admission). Between both groups, we compared the various acute care situation, PE and readmission rate with CHF within 1 year after discharge.
Results
There were no differences between P and N-group in mean age, distribution of underlying illness or daily activity level before admission. There ware not also differences about left ventricle function by echocardiography and various blood test data at admission. The enforcement rate of continuous infusion and the rate of urinary catheter placement were significantly lower in the P-group (71 vs 88%; p<0.0001, 52 vs 63%; p<0.01, respectively). And their enforcement duration was significantly shorter in P-group (4.6±5.3 vs 10.5±9.6 days; p<0.0001, 6.3±7.9 vs 12.8±13.1 days; p<0.0001 respectively). The enforcement rate of cardiac rehabilitation was significantly higher in group P (94 vs 84%; p<0.0001), and the starting time of rehabilitation was significantly earlier (2.9±1.5 vs 6.3±4.8th illness day; p<0.0001). As a result, the average HP was significantly shorter in group P (16.5±13.4 vs 28.6±24.1 days, p<0.0001). The readmission rate with CHF within one year after discharge was significantly lower in group P (23 vs 36%; p<0.001).
Conclusion
By the introduction of our original clinical pathway for congestive heart failure, the efficiency of medical care was achieved and the mean hospitalization period was widely shortened. In addition, by the through comprehensive patient education by multi-disciplinary staff involved in the pathway, the self-restraint life style after discharge seemed to be maintained and the readmission with worsening of heart failure was significantly suppressed.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | | | - H Mori
- Mitoyo General Hospital, Kanonji, Japan
| | - T Yoshino
- Mitoyo General Hospital, Kanonji, Japan
| | - T Yamaji
- Mitoyo General Hospital, Kanonji, Japan
| | | | | | - K Kagawa
- Mitoyo General Hospital, Kanonji, Japan
| | - N Onishi
- Mitoyo General Hospital, Kanonji, Japan
| | - M Imai
- Mitoyo General Hospital, Kanonji, Japan
| | - M Ueeda
- Ueeda cardiovasculal clinic, Toyonaka, Japan
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24
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Gusmira A, Takemura K, Lee SY, Inaba T, Hanawa-Suetsugu K, Oono-Yakura K, Yasuhara K, Kitao A, Suetsugu S. Regulation of caveolae through cholesterol-depletion-dependent tubulation mediated by PACSIN2. J Cell Sci 2020; 133:jcs246785. [PMID: 32878944 DOI: 10.1242/jcs.246785] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 08/24/2020] [Indexed: 01/09/2023] Open
Abstract
The membrane-shaping ability of PACSIN2 (also known as syndapin II), which is mediated by its F-BAR domain, has been shown to be essential for caveolar morphogenesis, presumably through the shaping of the caveolar neck. Caveolar membranes contain abundant cholesterol. However, the role of cholesterol in PACSIN2-mediated membrane deformation remains unclear. Here, we show that the binding of PACSIN2 to the membrane can be negatively regulated by cholesterol. We prepared reconstituted membranes based on the lipid composition of caveolae. The reconstituted membrane with cholesterol had a weaker affinity for the F-BAR domain of PACSIN2 than a membrane without cholesterol. Consistent with this, upon depletion of cholesterol from the plasma membrane, PACSIN2 localized at tubules that had caveolin-1 at their tips, suggesting that cholesterol inhibits membrane tubulation mediated by PACSIN2. The tubules induced by PACSIN2 could be representative of an intermediate of caveolae endocytosis. Consistent with this, the removal of caveolae from the plasma membrane upon cholesterol depletion was diminished in the PACSIN2-deficient cells. These data suggest that PACSIN2-mediated caveolae internalization is dependent on the amount of cholesterol, providing a mechanism for cholesterol-dependent regulation of caveolae.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Aini Gusmira
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kazuhiro Takemura
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro, Tokyo 152-8550, Japan
| | - Shin Yong Lee
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Takehiko Inaba
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kyoko Hanawa-Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kayoko Oono-Yakura
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Material Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Akio Kitao
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro, Tokyo 152-8550, Japan
| | - Shiro Suetsugu
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
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25
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Nishino T, Martin CJ, Takeuchi H, Lim F, Yasuhara K, Gisbert Y, Abid S, Saffon-Merceron N, Kammerer C, Rapenne G. Dipolar Nanocars Based on a Porphyrin Backbone. Chemistry 2020; 26:12010-12018. [PMID: 32530071 DOI: 10.1002/chem.202001999] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/25/2020] [Indexed: 11/08/2022]
Abstract
The design and synthesis of a new family of nanocars is reported. To control their motion, we integrated a dipole which can be tuned thanks to strategic donor and acceptor substituents at the 5- and 15-positions of the porphyrin backbone. The two other meso positions are substituted with ethynyltriptycene moieties which are known to act as wheels. Full characterization of nine nanocars is presented as well as the electrochemistry of these push-pull molecules. DFT calculations allowed us to evaluate the magnitude of the dipoles and to understand the electrochemical behavior and how it is affected by the electron donating and accepting groups present. An X-ray crystal structure of one nanocar has also been obtained.
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Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Colin J Martin
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,International Collaborative Laboratory for Supraphotoactive Systems, NAIST-CEMES, 29 rue Marvig, 31055, Toulouse, France
| | - Hiroki Takeuchi
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Florence Lim
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Yohan Gisbert
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Nathalie Saffon-Merceron
- UPS, Université de Toulouse, Institut de Chimie de Toulouse, FR 2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Claire Kammerer
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,International Collaborative Laboratory for Supraphotoactive Systems, NAIST-CEMES, 29 rue Marvig, 31055, Toulouse, France.,CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
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26
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Nishino T, Martin CJ, Takeuchi H, Lim F, Yasuhara K, Gisbert Y, Abid S, Saffon‐Merceron N, Kammerer C, Rapenne G. Front Cover: Dipolar Nanocars Based on a Porphyrin Backbone (Chem. Eur. J. 52/2020). Chemistry 2020. [DOI: 10.1002/chem.202003127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Toshio Nishino
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
| | - Colin J. Martin
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
- International Collaborative Laboratory for Supraphotoactive SystemsNAIST-CEMES 29 rue Marvig 31055 Toulouse France
| | - Hiroki Takeuchi
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
| | - Florence Lim
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
| | - Kazuma Yasuhara
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
| | - Yohan Gisbert
- CEMES-CNRS, Université de Toulouse 29, rue Marvig 31055 Toulouse France
| | - Seifallah Abid
- CEMES-CNRS, Université de Toulouse 29, rue Marvig 31055 Toulouse France
| | - Nathalie Saffon‐Merceron
- UPSUniversité de ToulouseInstitut de Chimie de Toulouse, FR 2599 118 route de Narbonne 31062 Toulouse France
| | - Claire Kammerer
- CEMES-CNRS, Université de Toulouse 29, rue Marvig 31055 Toulouse France
| | - Gwénaël Rapenne
- Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
- International Collaborative Laboratory for Supraphotoactive SystemsNAIST-CEMES 29 rue Marvig 31055 Toulouse France
- CEMES-CNRS, Université de Toulouse 29, rue Marvig 31055 Toulouse France
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27
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Nishino T, Martin CJ, Takeuchi H, Lim F, Yasuhara K, Gisbert Y, Abid S, Saffon-Merceron N, Kammerer C, Rapenne G. Dipolar Nanocars Based on a Porphyrin Backbone. Chemistry 2020; 26:11913. [PMID: 32841409 DOI: 10.1002/chem.202003128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Invited for the cover of this issue is Gwénaël Rapenne and co-workers from CEMES-CNRS at University Paul Sabatier, Toulouse, France and from NAIST, Nara, Japan. The image depicts an artistic representation of a nanocar race. Read the full text of the article at 10.1002/chem.202001999.
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Affiliation(s)
- Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Colin J Martin
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,International Collaborative Laboratory for Supraphotoactive Systems, NAIST-CEMES, 29 rue Marvig, 31055, Toulouse, France
| | - Hiroki Takeuchi
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Florence Lim
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Yohan Gisbert
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Nathalie Saffon-Merceron
- UPS, Université de Toulouse, Institut de Chimie de Toulouse, FR 2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Claire Kammerer
- CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,International Collaborative Laboratory for Supraphotoactive Systems, NAIST-CEMES, 29 rue Marvig, 31055, Toulouse, France.,CEMES-CNRS, Université de Toulouse, 29, rue Marvig, 31055, Toulouse, France
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28
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Zhang G, Zhang L, Zhang D, Wu Q, Sasaki Y, Hisaeda Y, Yasuhara K, Kikuchi JI, Song XM. Aerobic oxidation of thioglycol catalysed by metallophthalocyanine in an organic-inorganic hybrid vesicle “cerasome”. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Narumi A, Nakazawa T, Shinohara K, Kato H, Iwaki Y, Okimoto H, Kikuchi M, Kawaguchi S, Hino S, Ikeda A, Shaykoon MSA, Shen X, Duan Q, Kakuchi T, Yasuhara K, Nomoto A, Mikata Y, Yano S. C 60 Fullerene with Tetraethylene Glycols as a Well-defined Soluble Building Block and Saccharide-conjugation Producing PDT Photosensitizer. CHEM LETT 2019. [DOI: 10.1246/cl.190492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Atsushi Narumi
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Tatsufumi Nakazawa
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Kosuke Shinohara
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroki Kato
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yoshinori Iwaki
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Haruya Okimoto
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Moriya Kikuchi
- Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Seigou Kawaguchi
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shodai Hino
- Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Atsushi Ikeda
- Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | | | - Xiande Shen
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Qian Duan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Toyoji Kakuchi
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Akihiro Nomoto
- Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Yuji Mikata
- KYOUSEI Science Center for Life and Nature, Nara Women’s University, Kitauohigashimachi, Nara 630-8506, Japan
| | - Shigenobu Yano
- KYOUSEI Science Center for Life and Nature, Nara Women’s University, Kitauohigashimachi, Nara 630-8506, Japan
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30
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Yang H, Yamanaka M, Nagao S, Yasuhara K, Shibata N, Higuchi Y, Hirota S. Protein surface charge effect on 3D domain swapping in cells for c-type cytochromes. Biochim Biophys Acta Proteins Proteom 2019; 1867:140265. [PMID: 31437585 DOI: 10.1016/j.bbapap.2019.140265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/19/2019] [Accepted: 08/14/2019] [Indexed: 12/13/2022]
Abstract
Many c-type cytochromes (cyts) can form domain-swapped oligomers. The positively charged Hydrogenobacter thermophilus (HT) cytochrome (cyt) c552 forms domain-swapped oligomers during expression in the Escherichia coli (E. coli) expression system, but the factors influencing the oligomerization remain unrevealed. Here, we found that the dimer of the negatively charged Shewanella violacea (SV) cyt c5 exhibits a domain-swapped structure, in which the N-terminal helix is exchanged between protomers, similar to the structures of the HT cyt c552 and Pseudomonas aeruginosa (PA) cyt c551 domain-swapped dimers. Positively charged horse cyt c and HT cyt c552 domain swapped during expression in E. coli, whereas negatively charged PA cyt c551 and SV cyt c5 did not. Oligomers were formed during expression in E. coli for HT cyt c552 attached to either a co- or post-translational signal peptide for transportation through the cytoplasm membrane, but not for PA cyt c551 attached to either signal peptide. HT cyt c552 formed oligomers in E. coli in the presence and absence of rare codons. More oligomers were obtained from the in vitro folding of horse cyt c and HT cyt c552 by the addition of negatively charged liposomes during folding, whereas the amount of oligomers for the in vitro folding of PA cyt c551 and SV cyt c5 did not change significantly by the addition. These results indicate that the protein surface charge affects the oligomerization of c-type cyts in cells; positively charged c-type cyts assemble on a negatively charged membrane, inducing formation of domain-swapped oligomers during folding.
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Affiliation(s)
- Hongxu Yang
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Masaru Yamanaka
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Satoshi Nagao
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Naoki Shibata
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
| | - Yoshiki Higuchi
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
| | - Shun Hirota
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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31
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Parui PP, Sarakar Y, Majumder R, Das S, Yang H, Yasuhara K, Hirota S. Determination of proton concentration at cardiolipin-containing membrane interfaces and its relation with the peroxidase activity of cytochrome c. Chem Sci 2019; 10:9140-9151. [PMID: 31827756 PMCID: PMC6889831 DOI: 10.1039/c9sc02993a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/03/2019] [Indexed: 01/04/2023] Open
Abstract
The interface –log[H+] defined as pH′ of a mimic inner mitochondrial membrane is ∼3.9 at bulk pH ∼ 6.8, which affects cytochrome c activity.
The activities of biomolecules are affected by the proton concentrations at biological membranes. Here, we succeeded in evaluating the interface proton concentration (–log[H+] defined as pH′) of cardiolipin (CL)-enriched membrane models of the inner mitochondrial membrane (IMM) using a spiro-rhodamine-glucose molecule (RHG). According to fluorescence microscopy and 1H-NMR studies, RHG interacted with the Stern layer of the membrane. The acid/base equilibrium of RHG between its protonated open form (o-RHG) and deprotonated closed spiro-form (c-RHG) at the membrane interface was monitored with UV-vis absorption and fluorescence spectra. The interface pH′ of 25% cardiolipin (CL)-containing large unilamellar vesicles (LUVs), which possess similar lipid properties to those of the IMM, was estimated to be ∼3.9, when the bulk pH was similar to the mitochondrial intermembrane space pH (6.8). However, for the membranes containing mono-anionic lipids, the interface pH′ was estimated to be ∼5.3 at bulk pH 6.8, indicating that the local negative charges of the lipid headgroups in the lipid membranes are responsible for the deviation of the interface pH′ from the bulk pH. The peroxidase activity of cyt c increased 5–7 fold upon lowering the pH to 3.9–4.3 or adding CL-containing (10–25% of total lipids) LUVs compared to that at bulk pH 6.8, indicating that the pH′ decrease at the IMM interface from the bulk pH enhances the peroxidase activity of cyt c. The peroxidase activity of cyt c at the membrane interface of tetraoleoyl CL (TOCL)-enriched (50% of total lipids) LUVs was higher than that estimated from the interface pH′, while the peroxidase activity was similar to that estimated from the interface pH′ for tetramyristoyl CL (TMCL)-enriched LUVs, supporting the hypothesis that when interacting with TOCL (not TMCL), cyt c opens the heme crevice to substrates. The present simple methodology allows us to estimate the interface proton concentrations of complex biological membranes.
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Affiliation(s)
- Partha Pratim Parui
- Department of Chemistry , Jadavpur University , Kolkata 700032 , India . ; ; Tel: +91-9433490492.,Division of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
| | - Yeasmin Sarakar
- Department of Chemistry , Jadavpur University , Kolkata 700032 , India . ; ; Tel: +91-9433490492
| | - Rini Majumder
- Department of Chemistry , Jadavpur University , Kolkata 700032 , India . ; ; Tel: +91-9433490492
| | - Sanju Das
- Department of Chemistry , Jadavpur University , Kolkata 700032 , India . ; ; Tel: +91-9433490492.,Department of Chemistry , Maulana Azad College , Kolkata 700013 , India
| | - Hongxu Yang
- Division of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
| | - Kazuma Yasuhara
- Division of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
| | - Shun Hirota
- Division of Materials Science , Nara Institute of Science and Technology , Nara 630-0192 , Japan
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32
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Sahoo BR, Genjo T, Nakayama TW, Stoddard AK, Ando T, Yasuhara K, Fierke CA, Ramamoorthy A. A cationic polymethacrylate-copolymer acts as an agonist for β-amyloid and an antagonist for amylin fibrillation. Chem Sci 2019; 10:3976-3986. [PMID: 31015938 PMCID: PMC6457205 DOI: 10.1039/c8sc05771k] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 02/25/2019] [Indexed: 12/24/2022] Open
Abstract
In humans, β-amyloid and islet amyloid polypeptide (IAPP, also known as amylin) aggregations are linked to Alzheimer's disease and type-2 diabetes, respectively. There is significant interest in better understanding the aggregation process by using chemical tools. Here, we show the ability of a cationic polymethacrylate-copolymer (PMAQA) to quickly induce a β-hairpin structure and accelerate the formation of amorphous aggregates of β-amyloid-1-40, whereas it constrains the conformational plasticity of amylin for several days and slows down its aggregation at substoichiometric polymer concentrations. NMR experiments and microsecond scale atomistic molecular dynamics simulations reveal that PMAQA interacts with β-amyloid-1-40 residues spanning regions K16-V24 and A30-V40 followed by β-sheet induction. For amylin, it binds strongly close to the amyloid core domain (NFGAIL) and restrains its structural rearrangement. High-speed atomic force microscopy and transmission electron microscopy experiments show that PMAQA blocks the nucleation and fibrillation of amylin, whereas it induces the formation of amorphous aggregates of β-amyloid-1-40. Thus, the reported study provides a valuable approach to develop polymer-based amyloid inhibitors to suppress the formation of toxic intermediates of β-amyloid-1-40 and amylin.
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Affiliation(s)
- Bikash R Sahoo
- Biophysics and Department of Chemistry , University of Michigan , Ann Arbor , MI 48109-1055 , USA .
| | - Takuya Genjo
- Biophysics and Department of Chemistry , University of Michigan , Ann Arbor , MI 48109-1055 , USA .
| | - Takahiro W Nakayama
- Bio-AFM Frontier Research Center , Kanazawa University , Kanazawa 920-1192 , Japan
| | - Andrea K Stoddard
- Biophysics and Department of Chemistry , University of Michigan , Ann Arbor , MI 48109-1055 , USA .
| | - Toshio Ando
- Bio-AFM Frontier Research Center , Kanazawa University , Kanazawa 920-1192 , Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science , Nara Institute of Science and Technology , Ikoma , Nara 6300192 , Japan
| | - Carol A Fierke
- Biophysics and Department of Chemistry , University of Michigan , Ann Arbor , MI 48109-1055 , USA .
- Department of Chemistry , Texas A&M University , College Station , TX 77843 , USA
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry , University of Michigan , Ann Arbor , MI 48109-1055 , USA .
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Affiliation(s)
| | | | - Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, Toulouse, France
| | - Toshio Nishino
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Kazuma Yasuhara
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, Toulouse, France
- Division of Materials Science, Nara Institute of Science and Technology, NAIST, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
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Takahashi H, Yumoto K, Yasuhara K, Nadres ET, Kikuchi Y, Buttitta L, Taichman RS, Kuroda K. Anticancer polymers designed for killing dormant prostate cancer cells. Sci Rep 2019; 9:1096. [PMID: 30705336 PMCID: PMC6355926 DOI: 10.1038/s41598-018-36608-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 11/23/2018] [Indexed: 12/12/2022] Open
Abstract
The discovery of anticancer therapeutics effective in eliminating dormant cells is a significant challenge in cancer biology. Here, we describe new synthetic polymer-based anticancer agents that mimic the mode of action of anticancer peptides. These anticancer polymers developed here are designed to capture the cationic, amphiphilic traits of anticancer peptides. The anticancer polymers are designed to target anionic lipids exposed on the cancer cell surfaces and act by disrupting the cancer cell membranes. Because the polymer mechanism is not dependent on cell proliferation, we hypothesized that the polymers were active against dormant cancer cells. The polymers exhibited cytotoxicity to proliferating prostate cancer. Importantly, the polymer killed dormant prostate cancer cells that were resistant to docetaxel. This study demonstrates a new approach to discover novel anticancer therapeutics.
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Affiliation(s)
- Haruko Takahashi
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 USA
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima, 739–8526 Japan
| | - Kenji Yumoto
- Department of Periodontics & Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 USA
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara, 630–0192 Japan
| | - Enrico T. Nadres
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 USA
| | - Yutaka Kikuchi
- Department of Biological Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima, 739–8526 Japan
| | - Laura Buttitta
- Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Russell S. Taichman
- Department of Periodontics & Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 USA
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 USA
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35
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Goto Y, Ueda M, Sugikawa K, Yasuhara K, Ikeda A. Light-triggered hydrophilic drug release from liposomes through removal of a photolabile protecting group. RSC Adv 2018; 9:166-171. [PMID: 35521599 PMCID: PMC9059325 DOI: 10.1039/c8ra08584f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/11/2018] [Indexed: 11/25/2022] Open
Abstract
The antibiotic penicillin G cannot be completely incorporated into hydrophobic lipid-membranes owing to its hydrophilicity. Through modification with a hydrophobic and photolabile protecting group, penicillin G was effectively incorporated into liposomes and released by photoirradiation at 365 nm. Penicillin G as an antibiotic was released from liposomes by increase of hydrophilicity by photocleavage of a hydrophobic protecting group.![]()
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Affiliation(s)
- Yuya Goto
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Masafumi Ueda
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan.,School of Science, Kitasato University 1-15-1 Kitasato, Minami-ku Sagamihara Kanagawa 252-0373 Japan
| | - Kouta Sugikawa
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
| | - Atsushi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
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36
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Sahoo BR, Genjo T, Bekier M, Cox SJ, Stoddard AK, Ivanova M, Yasuhara K, Fierke CA, Wang Y, Ramamoorthy A. Alzheimer's amyloid-beta intermediates generated using polymer-nanodiscs. Chem Commun (Camb) 2018; 54:12883-12886. [PMID: 30379172 PMCID: PMC6247814 DOI: 10.1039/c8cc07921h] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymethacrylate-copolymer (PMA) encased lipid-nanodiscs (∼10 nm) and macro-nanodiscs (>15 nm) are used to study Aβ1-40 aggregation. We demonstrate that PMA-nanodiscs form a ternary association with Aβ and regulate its aggregation kinetics by trapping intermediates. Results demonstrating the reduced neurotoxicity of nanodisc-bound Aβ oligomers are also reported.
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Affiliation(s)
- Bikash R. Sahoo
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
| | - Takuya Genjo
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
| | - Michael Bekier
- Department of Neurology, Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Sarah J. Cox
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
| | - Andrea K. Stoddard
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
| | - Magdalena Ivanova
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
| | - Kazuma Yasuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 6300192, Japan
| | - Carol A. Fierke
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
- Texas A&M University, College Station, TX 77843, USA
| | - Yanzhuang Wang
- Department of Neurology, Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
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37
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Sakurada H, Yasuhara K, Kato K, Asano S, Yoshida M, Yamamura M, Tachi T, Teramachi H. An investigation of visual hallucinations associated with voriconazole administration to patients with hematological malignancies. Pharmazie 2018; 71:660-664. [PMID: 29441972 DOI: 10.1691/ph.2016.6725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Voriconazole (VRCZ) is commonly administered to treat fungal infections in patients with hematological malignancies. Some of these patients experience VRCZ-associated visual hallucinations. We conducted a retrospective survey to investigate the characteristic features of this side effect. Patients with hematological malignancies who were treated with VRCZ for a fungal infection after hospitalization at Ichinomiya municipal hospital between 1 October 2005 and 31 December 2015 were included in this study (n = 103). Fifteen of these (14.6%) reported visual hallucinations that started on day 1-7. Seven of these 15 patients developed this symptom rapidly (day 1 or 2). Three patients had transient symptoms (lasting 2-12 days), 6 patients experienced hallucinations throughout the treatment, and the duration was unknown in 6 patients. Eleven patients experienced visual hallucinations when their eyes were closed (73 %) and these disappeared when they opened their eyes. One patient had visual hallucinations with open eyes, while the state of the eyes was unknown in 3 patients. The patients saw a range of images including people, animals, landscapes, and foods; several reported seeing images like those found in movies. In addition, 9 of 15 patients (60%) with visual hallucinations had visual disturbances. This was a higher proportion than that observed in patients who did not develop hallucinations (17 of 88; 19.3 %; P < 0.05). However, we found no significant difference between the blood VCRZ concentrations of patients who developed or did not develop visual hallucinations. This study indicated that most of these patients had visual hallucinations that manifested on eye closure, and they did not progress to serious mental illness. Our findings emphasized the importance of fully explaining the features of this symptom to each patient prior to starting VRCZ administration in order to reduce anxiety. In addition, since VRCZ discontinuation will compromise patient management, therapeutic drug monitoring should be used to increase the likelihood of successful therapy.
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Abstract
The increasing prevalence of antibiotic-resistant bacterial infections, coupled with the decline in the number of new antibiotic drug approvals, has created a therapeutic gap that portends an emergent public health crisis.
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Affiliation(s)
- Cansu Ergene
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Kazuma Yasuhara
- Graduate School of Materials Science
- Nara Institute for Science and Technology
- Ikoma
- Japan
| | - Edmund F. Palermo
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
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39
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Yasuhara K, Arakida J, Ravula T, Ramadugu SK, Sahoo B, Kikuchi JI, Ramamoorthy A. Spontaneous Lipid Nanodisc Fomation by Amphiphilic Polymethacrylate Copolymers. J Am Chem Soc 2017; 139:18657-18663. [PMID: 29171274 DOI: 10.1021/jacs.7b10591] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
There is a growing interest in the use of lipid bilayer nanodiscs for various biochemical and biomedical applications. Among the different types of nanodiscs, the unique features of synthetic polymer-based nanodiscs have attracted additional interest. A styrene-maleic acid (SMA) copolymer demonstrated to form lipid nanodiscs has been used for structural biology related studies on membrane proteins. However, the application of SMA polymer based lipid nanodiscs is limited because of the strong absorption of the aromatic group interfering with various experimental measurements. Thus, there is considerable interest in the development of other molecular frameworks for the formation of polymer-based lipid nanodiscs. In this study, we report the first synthesis and characterization of a library of polymethacrylate random copolymers as alternatives to SMA polymer. In addition, we experimentally demonstrate the ability of these polymers to form lipid bilayer nanodiscs through the fragmentation of lipid vesicles by means of light scattering, electron microscopy, differential scanning calorimetry, and solution and solid-state NMR experiments. We further demonstrate a unique application of the newly developed polymer for kinetics and structural characterization of the aggregation of human islet amyloid polypeptide (also known as amylin) within the lipid bilayer of the polymer nanodiscs using thioflavin-T-based fluorescence and circular dichroism experiments. Our results demonstrate that the reported new styrene-free polymers can be used in high-throughput biophysical experiments. Therefore, we expect that the new polymer nanodiscs will be valuable in the structural studies of amyloid proteins and membrane proteins by various biophysical techniques.
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Affiliation(s)
- Kazuma Yasuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Jin Arakida
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Thirupathi Ravula
- Biophysics Program and Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109-1055, United States
| | - Sudheer Kumar Ramadugu
- Biophysics Program and Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109-1055, United States
| | - Bikash Sahoo
- Biophysics Program and Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109-1055, United States
| | - Jun-Ichi Kikuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5 Takayama-cho, Ikoma, Nara 6300192, Japan
| | - Ayyalusamy Ramamoorthy
- Biophysics Program and Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109-1055, United States
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40
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Sugikawa K, Kadota T, Matsuo K, Yasuhara K, Ikeda A. Growth of Anisotropic Gold Nanoparticle Assemblies via Liposome Fusion. Materials (Basel) 2017; 10:E1317. [PMID: 29149039 PMCID: PMC5706264 DOI: 10.3390/ma10111317] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/14/2017] [Accepted: 11/14/2017] [Indexed: 11/22/2022]
Abstract
Anisotropic assembly of nanoparticles (NPs) has attracted extensive attention because of the potential applications in materials science, biology, and medicine. However, assembly control (e.g., the number of assembled NPs) has not been adequately studied. Here, the growth of anisotropic gold NP assemblies on a liposome surface is reported. Citrate-coated gold NPs adsorbed on liposome surfaces were assembled in one dimension at temperatures above the phase transition temperature of the lipid bilayer. Growth of the anisotropic assemblies depended on the heating time. Absorption spectroscopy and transmission electron microscopy revealed that the gradual growth was attributed to liposome fusion, which was strongly affected by the size of the gold NPs. This method enabled us to precisely control the number of NPs in each anisotropic assembly. These results will enable the fabrication of functional materials based on NP assemblies and enable investigations of cell functions and disease causality.
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Affiliation(s)
- Kouta Sugikawa
- Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Tatsuya Kadota
- Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Kotaro Matsuo
- Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Kazuma Yasuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Nara 630-0192, Japan.
| | - Atsushi Ikeda
- Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
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41
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Sugikawa K, Takamatsu Y, Kakigi T, Yasuhara K, Ikeda A. Tubulation of liposomes via the interaction of supramolecular nanofibers. Chem Commun (Camb) 2017; 53:10140-10143. [PMID: 28848982 DOI: 10.1039/c7cc05857h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We achieved tubulation of self-assembled lipid membranes, liposomes, via the interaction of supramolecular nanofibers, porphyrin J-aggregates. This structural change was reversible, and the deformation of the porphyrin J-aggregates caused reconstruction of the liposomes from the tubes. We discussed the tubulation mechanism and calculated the force provided by porphyrin J-aggregates for tubulation.
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Affiliation(s)
- Kouta Sugikawa
- Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
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42
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Abstract
Cell-secreted vesicles, such as exosomes, have recently been recognized as mediators of cell communication. A recent study in cattle showed the involvement of exosome-like vesicles in the control of cumulus expansion, a prerequisite process for normal ovulation; however, whether this is the case in other mammalian species is not known. Therefore, this study aimed to examine the presence of exosome-like vesicles in ovarian follicles and their effects on cumulus expansion in vitro in pigs. The presence of exosome-like vesicles in porcine follicular fluid (pFF) was confirmed by transmission electron microscopic observation, the detection of marker proteins, and RNA profiles specific to exosomes. Fluorescently labeled exosome-like vesicles isolated from pFF were incorporated into both cumulus and mural granulosa cells in vitro. Exosome-like vesicles were not capable of inducing cumulus expansion to a degree comparable to that induced by follicle-stimulating hormone (FSH). Moreover, exosome-like vesicles had no significant effects on the expression levels of transcripts required for the normal expansion process (HAS2, TNFAIP6, and PTGS2). Interestingly, FSH-induced expression of HAS2 and TNFAIP6 mRNA, but not of PTGS2 mRNA, was significantly increased by the presence of exosome-like vesicles; however, the degree of FSH-induced expansion was not affected. In addition, porcine exosome-like vesicles had no significant effects on the expansion of mouse cumulus-oocyte complexes. Collectively, the present results suggest that exosome-like vesicles are present in pFF, but they are not efficient in inducing cumulus expansion in pigs.
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Affiliation(s)
- Yuta Matsuno
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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Sugikawa K, Takamatsu Y, Yasuhara K, Ueda M, Ikeda A. Reversible Vesicle-to-Disk Transitions of Liposomes Induced by the Self-Assembly of Water-Soluble Porphyrins. Langmuir 2017; 33:1023-1029. [PMID: 28054781 DOI: 10.1021/acs.langmuir.6b02723] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Structural control of lipid membranes is important for mechanisms underlying biological functions and for creating high-functionality soft materials. We demonstrate the reversible control of vesicle structures (liposomes) using supramolecular assemblies. Specifically, water-soluble anionic porphyrin molecules interact with positively charged lipid membrane surfaces to form one-dimensional self-assembled structures (J-aggregates) under acidic conditions. Cryogenic transmission electron microscopy revealed that porphyrin J-aggregates on the membrane surface induced an extensive structural change from vesicles to layered disks. Neutralization of the solution deformed the porphyrin J-aggregates, thereby reforming nanosized liposomes from the layered disks.
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Affiliation(s)
- Kouta Sugikawa
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Yutaro Takamatsu
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology , Nara 630-0192, Japan
| | - Masafumi Ueda
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
| | - Atsushi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University , Higashi-Hiroshima 739-8527, Japan
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44
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Tsuneishi C, Koizumi Y, Sueto R, Nishiyama H, Yasuhara K, Yamagishi TA, Ogoshi T, Tomita I, Inagi S. The controlled synthesis of pillar[6]arene-based hexagonal cylindrical structures on an electrode surface via electrochemical oxidation. Chem Commun (Camb) 2017; 53:7454-7456. [DOI: 10.1039/c7cc02969a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Electrochemical oxidation of pillar[6]arene containing six hydroquinones resulted in the formation of hexagonal cylindrical structures on an electrode surface driven by charge transfer interaction.
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Affiliation(s)
- Chiaki Tsuneishi
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Midori-ku
- Japan
| | - Yuki Koizumi
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Midori-ku
- Japan
| | - Ryuta Sueto
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kakuma-machi
- Japan
| | - Hiroki Nishiyama
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Midori-ku
- Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- 8916-5 Takayama
- Japan
| | - Tada-aki Yamagishi
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kakuma-machi
- Japan
| | - Tomoki Ogoshi
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kakuma-machi
- Japan
- JST
| | - Ikuyoshi Tomita
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Midori-ku
- Japan
| | - Shinsuke Inagi
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Midori-ku
- Japan
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45
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Yokoyama S, Ohno Y, Egawa T, Yasuhara K, Nakai A, Sugiura T, Ohira Y, Yoshioka T, Okita M, Origuchi T, Goto K. Heat shock transcription factor 1-associated expression of slow myosin heavy chain in mouse soleus muscle in response to unloading with or without reloading. Acta Physiol (Oxf) 2016; 217:325-37. [PMID: 27084024 DOI: 10.1111/apha.12692] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/28/2015] [Accepted: 04/11/2016] [Indexed: 12/28/2022]
Abstract
AIM The effects of heat shock transcription factor 1 (HSF1) deficiency on the fibre type composition and the expression level of nuclear factor of activated T cells (NFAT) family members (NFATc1, NFATc2, NFATc3 and NFATc4), phosphorylated glycogen synthase kinase 3α (p-GSK3α) and p-GSK3β, microRNA-208b (miR-208b), miR-499 and slow myosin heavy chain (MyHC) mRNAs (Myh7 and Myh7b) of antigravitational soleus muscle in response to unloading with or without reloading were investigated. METHODS HSF1-null and wild-type mice were subjected to continuous 2-week hindlimb suspension followed by 2- or 4-week ambulation recovery. RESULTS In wild-type mice, the relative population of slow type I fibres, the expression level of NFATc2, p-GSK3 (α and β), miR-208b, miR-499 and slow MyHC mRNAs (Myh7 and Myh7b) were all decreased with hindlimb suspension, but recovered after it. Significant interactions between train and time (the relative population of slow type I fibres; P = 0.01, the expression level of NFATc2; P = 0.001, p-GSKβ; P = 0.009, miR-208b; P = 0.002, miR-499; P = 0.04) suggested that these responses were suppressed in HSF1-null mice. CONCLUSION HSF1 may be a molecule in the regulation of the expression of slow MyHC as well as miR-208b, miR-499, NFATc2 and p-GSK3 (α and β) in mouse soleus muscle.
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Affiliation(s)
- S. Yokoyama
- Department of Locomotive Rehabilitation Science; Unit of Rehabilitation Sciences; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
- Laboratory of Physiology; School of Health Science; Toyohashi SOZO University; Toyohashi Japan
| | - Y. Ohno
- Laboratory of Physiology; School of Health Science; Toyohashi SOZO University; Toyohashi Japan
| | - T. Egawa
- Department of Physiology; Graduate School of Health Science; Toyohashi SOZO University; Toyohashi Japan
| | - K. Yasuhara
- Department of Orthopaedic Surgery; St. Marianna University School of Medicine; Kawasaki Japan
| | - A. Nakai
- Department of Molecular Biology; Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - T. Sugiura
- Faculty of Education; Yamaguchi University; Yamaguchi Japan
| | - Y. Ohira
- Faculty and Graduate School of Health and Sports Sciences; Doshisha University; Kyotanabe Japan
| | | | - M. Okita
- Department of Locomotive Rehabilitation Science; Unit of Rehabilitation Sciences; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - T. Origuchi
- Department of Locomotive Rehabilitation Science; Unit of Rehabilitation Sciences; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - K. Goto
- Laboratory of Physiology; School of Health Science; Toyohashi SOZO University; Toyohashi Japan
- Department of Physiology; Graduate School of Health Science; Toyohashi SOZO University; Toyohashi Japan
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46
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Ogoshi T, Sueto R, Yoshikoshi K, Yasuhara K, Yamagishi TA. Spherical Vesicles Formed by Co-Assembly of Cyclic Pentagonal Pillar[5]quinone with Cyclic Hexagonal Pillar[6]arene. J Am Chem Soc 2016; 138:8064-7. [DOI: 10.1021/jacs.6b04125] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Tomoki Ogoshi
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ryuta Sueto
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kumiko Yoshikoshi
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kazuma Yasuhara
- Graduate
School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma 5630-0192, Japan
| | - Tada-aki Yamagishi
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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47
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Affiliation(s)
- Kouta Sugikawa
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Tatsuya Kadota
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science; Nara Institute of Science and Technology; Nara 630-0192 Japan
| | - Atsushi Ikeda
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
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48
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Sugikawa K, Kadota T, Yasuhara K, Ikeda A. Anisotropic Self-Assembly of Citrate-Coated Gold Nanoparticles on Fluidic Liposomes. Angew Chem Int Ed Engl 2016; 55:4059-63. [DOI: 10.1002/anie.201511785] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 01/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Kouta Sugikawa
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Tatsuya Kadota
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science; Nara Institute of Science and Technology; Nara 630-0192 Japan
| | - Atsushi Ikeda
- Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
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49
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Ikeda A, Hino S, Ashizawa K, Sugikawa K, Kikuchi JI, Tsukamoto M, Yasuhara K. Lipid-membrane-incorporated hydrophobic photochromic molecules prepared by the exchange method using cyclodextrins. Org Biomol Chem 2015; 13:6175-82. [DOI: 10.1039/c5ob00240k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
It was found that the exchange method for the preparation of lipid-membrane-incorporated guest molecules was applicable to not only fullerenes but also other hydrophobic molecules such as azobenzene and stilbene.
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Affiliation(s)
- Atsushi Ikeda
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Shodai Hino
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Kengo Ashizawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Kouta Sugikawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Jun-ichi Kikuchi
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Manami Tsukamoto
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Kazuma Yasuhara
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
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50
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Ikeda A, Hino S, Mae T, Tsuchiya Y, Sugikawa K, Tsukamoto M, Yasuhara K, Shigeto H, Funabashi H, Kuroda A, Akiyama M. Porphyrin-uptake in liposomes and living cells using an exchange method with cyclodextrin. RSC Adv 2015. [DOI: 10.1039/c5ra24985f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A preparation of a lipid-membrane-incorporated tetraphenylporphyrin was achieved from the corresponding tetraphenylporphyrin·cyclodextrin complexes using an exchange method in both liposomes and cells.
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