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Suzuki Y, Hashimoto T, Hayashita T. Ratiometric fluorescence sensing of d-allulose using an inclusion complex of γ-cyclodextrin with a benzoxaborole-based probe. RSC Adv 2022; 12:12145-12151. [PMID: 35481078 PMCID: PMC9021936 DOI: 10.1039/d2ra00749e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
Because d-allulose has been attracting attention as a zero-calorie sugar, the selective sensing of d-allulose is desired to investigate its health benefits. We report herein a novel fluorescence chemosensor that is based on an inclusion complex of γ-cyclodextrin (γ-CyD) with a benzoxaborole-based probe. Two inclusion complexes, 1/γCyD and 2/γCyD, were prepared by mixing γ-CyD with their corresponding probes in a water-rich solvent, where γ-CyD encapsulates two molecules of the probes inside its cavity to form a pyrene dimer. Both 1/γCyD and 2/γCyD exhibit monomeric and dimeric fluorescence from the pyrene moieties. By the reaction of 1/γCyD with saccharides, the intensities of monomeric and dimeric fluorescence remained unchanged and decreased, respectively. We have demonstrated that 1/γCyD has much higher affinity for d-allulose than for the other saccharides (d-fructose, d-glucose, and d-galactose). The conditional equilibrium constants for the reaction systems were determined to be 498 ± 35 M-1 for d-fructose, 48.4 ± 25.3 M-1 for d-glucose, 15.0 ± 3.3 M-1 for d-galactose, and (8.05 ± 0.59) × 103 M-1 for d-allulose. These features of 1/γCyD enable ratiometric fluorescence sensing with high sensitivity and selectivity for d-allulose. The limits of detection and quantification of 1/γCyD for d-allulose at pH 8.0 were determined to be 6.9 and 21 μM, respectively. Induced circular dichroism spectral study has shown that the reaction of 1/γCyD with d-allulose causes the monomerisation of the dimer of probe 1 that is encapsulated by γ-CyD, which leads to the diminishment of the dimeric fluorescence.
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Affiliation(s)
- Yota Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioi-cho Chiyoda-ku Tokyo 102-8554 Japan
| | - Takeshi Hashimoto
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioi-cho Chiyoda-ku Tokyo 102-8554 Japan
| | - Takashi Hayashita
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University 7-1, Kioi-cho Chiyoda-ku Tokyo 102-8554 Japan
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Dhawan B, Akhter G, Hamid H, Kesharwani P, Alam MS. Benzoxaboroles: New emerging and versatile scaffold with a plethora of pharmacological activities. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Narumi A, Sato SI, Shen X, Kakuchi T. Precision synthesis for well-defined linear and/or architecturally controlled thermoresponsive poly(N-substituted acrylamide)s. Polym Chem 2022. [DOI: 10.1039/d1py01449h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the progress in precision polymerizations of specific kinds of N-alkylacrylamides and N,N-dialkylacrylamides to produce polymers showing thermoresponsive properties in aqueous media, which representatively include the reversible-deactivation radical polymerizations...
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Hakuto N, Saito K, Kirihara M, Kotsuchibashi Y. Preparation of cross-linked poly(vinyl alcohol) films from copolymers with benzoxaborole and carboxylic acid groups, and their degradability in an oxidizing environment. Polym Chem 2020. [DOI: 10.1039/d0py00153h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Functionalized PVA films were prepared from copolymers with benzoxaborole and carboxyl groups.
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Affiliation(s)
- Nao Hakuto
- Department of Materials and Life Science
- Shizuoka Institute of Science and Technology
- Fukuroi
- Japan
| | - Katsuya Saito
- Department of Materials and Life Science
- Shizuoka Institute of Science and Technology
- Fukuroi
- Japan
| | - Masayuki Kirihara
- Department of Materials and Life Science
- Shizuoka Institute of Science and Technology
- Fukuroi
- Japan
| | - Yohei Kotsuchibashi
- Department of Materials and Life Science
- Shizuoka Institute of Science and Technology
- Fukuroi
- Japan
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Kudo Y, Ono J, Kotsuchibashi Y. Controlled water-soluble properties of poly(vinyl alcohol) films via the benzoxaborole-containing temperature-responsive copolymers. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.04.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Yoneoka S, Nakagawa Y, Uto K, Sakura K, Tsukahara T, Ebara M. Boron-incorporating hemagglutinating virus of Japan envelope (HVJ-E) nanomaterial in boron neutron capture therapy. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:291-304. [PMID: 30956733 PMCID: PMC6442114 DOI: 10.1080/14686996.2019.1586051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/19/2019] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Combining immunotherapeutic and radiotherapeutic technique has recently attracted much attention for advancing cancer treatment. If boron-incorporated hemagglutinating virus of Japan-envelope (HVJ-E) having high membrane fusion ability can be used as a boron delivery agent in boron neutron capture therapy (BNCT), a radical synergistic improvement of boron accumulation efficiency into tumor cells and antitumor immunity may be induced. In this study, we aimed to develop novel boron-containing biocompatible polymers modified onto HVJ-E surfaces. The copolymer consisting of 2-methacryloyloxyethyl phosphorylcholine (MPC) and methacrylamide benzoxaborole (MAAmBO), poly[MPC-co-MAAmBO], was successfully synthesized by using a simple free radical polymerization. The molecular structures and molecular weight of the poly[MPC-co-MAAmBO] copolymer were characterized by nuclear magnetic resonance and matrix-assisted laser desorption ionization time-of-flight mass spectrometry, respectively. The poly[MPC-co-MAAmBO] was coated onto the HVJ-E surface via the chemical bonding between the MAAmBO moiety and the sugar moiety of HVJ-E. DLS, AFM, UV-Vis, and fluorescence measurements clarified that the size of the poly[MPC-co-MAAmBO]-coated HVJ-E, HVJ-E/p[MPC-MAAmBO], to be about 130 ~ 150 nm in diameter, and that the polymer having 9.82 × 106 ~ 7 boron atoms was steadily coated on a single HVJ-E particle. Moreover, cellular uptake of poly[MPC-co-MAAmBO] could be demonstrated without cytotoxicity, and the hemolysis could be successfully suppressed by 20%. These results indicate that the HVJ-E/p[MPC-MAAmBO] may be used as boron nanocarriers in a combination of immunotherapy with BNCT.
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Affiliation(s)
- Shuichiro Yoneoka
- Laboratory for Advanced Nuclear Energy, Tokyo Institute of Technology, Tokyo, Japan
| | - Yasuhiro Nakagawa
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
- Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, Kawasaki-ku, Kawasaki, Japan
| | - Koichiro Uto
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
| | - Kazuma Sakura
- Department of Medical Innovation, and Respiratory Center, Osaka University Hospital, Suita, Osaka, Japan
| | - Takehiko Tsukahara
- Laboratory for Advanced Nuclear Energy, Tokyo Institute of Technology, Tokyo, Japan
| | - Mitsuhiro Ebara
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
- Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Graduate School of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
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